TW504617B - Method using computer software to implement simulated bluetooth communication - Google Patents

Abstract

The present invention provides a method using computer software to implement simulated bluetooth communication. It is applicable on at least two computers wherein each computer should individually have a physical communication layer under the same transmission protocol and should individually run the simulated bluetooth communication software that can implement the method so to simulate communication with the other computers while bluetooth hardware is being applied. The method includes the following steps: coding a host controller interface (HCI) program code for simulating the processes of all the protocol commands and data packets provided by the bluetooth hardware to the host controller interface (HCI) so as to allow the computer to simulate the processes of all the commands and data packets received by the host controller interface (HCI) after running the host controller interface (HCI) program code; coding a virtual bluetooth radio frequency (RF) interface program code for simulating the bluetooth hardware so as to allow the computer to simulate the communication and the configuration of the bluetooth hardware after running the virtual bluetooth radio frequency (RF) interface program code.

Description

504617 V. Description of the invention (1) Field of the invention The present invention relates to a method for Bluetooth communication, and more particularly to a method for simulating Bluetooth communication using computer software implemented. BACKGROUND OF THE INVENTION It is known to use a Bluetooth communication method. As shown in FIG. 1, the near-end computer host and the far-end computer host in FIG. 1 are respectively connected to Bluetooth hardware, and transmit and receive data packets through radio waves generated by Bluetooth. In order to allow existing devices to support Bluetooth conveniently, Bluetooth defines a host controller interface (hereinafter abbreviated as HCI). Existing devices only need to be installed on the Com port (communication port), USB, PCMCIA interfaces to support the HCI interface. Bluetooth hardware can form a device with Bluetooth communication function, which can make existing devices that have no embedded Bluetooth chipset, but also have the ability to support Bluetooth 'and all Bluetooth hardware that supports the HC I interface. There is a dilemma that the equipment is incompatible and cannot be used. However, it is not necessary to be prepared, but it is necessary to be stable, but it is sufficient but hard, and this expensive process is often used, but it is not appropriate, and the order is set to set the body to communicate with the body. The blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth blue tooth before the blue eyed the blue eyed the blue eyed before the hair eyed the blue eyed hair hair to open the tooth to open the mouth to be able to raise the tooth blue tooth must have its own model this demand. Disturbances caused by disturbing work do not coincide with the softness of the open body, and they may be used together. ICBC ’s hair development can use soft seeds to give first-order pre-maturity and the pre-existing technique of hard teeth blue. square. Segment

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V. Description of the invention (2) Summary of the invention It is more practical and can be simulated. The purpose of the present invention is to provide the processing of all packets in the HC I specification without the help of Bluetooth. In order to achieve the purpose of the present invention, the present invention provides a method for implementing ipu t er so 11 war e 1 mp 1 emen t ecHM by computer software, which is applicable. On at least two computers, where the-+ + t and-1 computers have a physical communication layer with the same transmission protocol, the two octaves implement the method of simulating Bluetooth communication. The communication software is implemented using soft brain simulation. The Bluetooth hardware communicates with each other, ^ to make this one step: coding (hosting)-host control interface (Hcn " to include the following steps to simulate the processing of the Bluetooth hardware in the host control interface, the master code ^ code ' The commands and data packets used by the computer enable the computer to simulate and process the host after the execution of the Protocol (Hc I) code. ^ Eight control interface commands and data packets; · Coding—] = The received code is used to simulate the Bluetooth hardware, so that after the RF interface of the tooth is transmitted to the cheek interface code, it can simulate the execution of the virtual blue it π- fetch hardware. ; Setting of dental carcass. Its In this virtual Bluetooth radio 0 communication and the 10, the steps of the pedestrian interface 裎 4 π were tested, and the hardware communication steps were: making the eight-digit code simulate the radio phase a 豕 the computer executes the & cheek After the interface code, the virtual Bluetooth is transmitted to the A Bluetooth virtual data card and the data packet, and then the packet is packaged as a packet received by the private ▲ code.

Page 6 504617 V. Description of the invention (3) In order to make the person skilled in the art understand the purpose, features and effects of the present invention, the following specific embodiments and the accompanying drawings are used to explain the present invention in detail. The description is as follows: Detailed description of the invention FIG. 2 shows a schematic diagram of an analog Bluetooth communication architecture according to the method of the present invention. The near-end computer host (10cal hst) 10 and the remote host (ll) of Fig. 2 pass through their respective virtual bluetooth host controller interface 2 and virtual Bluetooth radio frequency interface (virtual bluetooth RF Interface) 13 'and through the phySicai comm mmation layer 14 to achieve the transmission and reception of data packets. The virtual monitor host control interface 1 2 simulates the η c I interface of all Bluetooth hardware. The actions of the computer host are as if they are directly connected to the Bluetooth hardware. All commands and events in the HC I interface can be simulated by the virtual Bluetooth host control interface 12. Developed by software In terms of working angle, the errors caused by Bluetooth hardware factors can be controlled or avoided in the virtual monitor host control interface 12 and virtual Bluetooth radio frequency interface 丨 of the present invention to facilitate software development work. Connection and debugging, through the virtual Bluetooth host control interface 12 and virtual Bluetooth radio frequency interface 13, can complete the Bluetooth software protocol layer (blUet00th software pr〇t〇c〇1 1 ayer). Figure 3 shows the architecture of the virtual Bluetooth host control interface shown in Figure 2 丨 2 504617 V. Description of the invention (4) Figure. Virtual Bluetooth host control interface 1 2 at least by the host Control interface packet processing (HCI packet process) 120, link chain control (iink

control) 121, link manager 122 (link manager) 122, UA / UI / US channel (UA / UI / US chanel) 123, and packet composer 12 4 etc. The host control interface packet processing 120 receives the HCI command transmitted by the upper layer, parses the HCI command, and executes the program required to execute the HCI command. If these programs need to send messages (messages), the connection is established through logical channels (i0gicai channels) such as link control 1 2 1, link management ι 2 2, UA / UI / US channel 12 3, etc.

The data is transmitted and transmitted. Finally, the packet is created through packet preparation 1 2 4 and then transmitted to the next layer. On the other hand, the next layer will also have packets from the virtual Bluetooth host control interface 12 of other computer hosts. At this time, the packet preparation 1 2 4 will unpack it and transfer it to the respective link control ι 2 ι, link chain management 1 2 2, UA / UI / US channel 1 2 3 and other logical channels, and finally delivered to the host control interface packet processing 1 2 0 for processing.

In order to support a set of HC I packets defined by HC I, the HCI packets processed by the virtual Bluetooth host control interface 12 may each contain commands or data. The main classifications are: (1) link chain control ( link control) protocol breeding packet, which is used to establish and cut off the ACL link U i nk) and SCO link; (2) the data packet of the link chain strategy (i ink control po icy) protocol, which is used to switch The "connection mode" includes active mode (mode), lnQU1ry (inquiry) mode, hold mode, sniff mode, and park mode; (3) authentication and encryption (authentlcati ㈤ and encrypti0n) protocol

Page 8 504617 V. Description of the invention (5) The specified data packet is used for authentication and encryption using PIN code (Code) and link record (1 inkkey) to improve the security during connection; (4) Parameter setting (parameters configuration) protocol data packet, which is used to modify or read various parameters on Bluetooth hardware; (5) hardware information and status protocol data packet, which is used to read hardware Information and status; (6) data packet of data transmission (data ΐ ransmissi ο η) agreement, which is used to transmit data packets; (7) flow control (f 1 〇wc〇ntr ο 1) data packet of agreement, which It is used to avoid the packet transmission too fast, which can cause the computer host or the Bluetooth hardware's buffer (buf er) to be unable to digest, resulting in buffer overflow (overn0w). Figures 4a to 4d show schematic diagrams of processing an HC I packet by an analog Bluetooth communication architecture according to the method of the present invention. Figure 4a shows a schematic diagram of transmitting a general data packet. For example, a general data packet is transmitted from the local computer host 10 to the remote computer host 11. Figure 4b shows the schematic diagram of the near-end computer host sending: σρ々 packets to the simulated Bluetooth hardware. The near-end computer host sends 10 packets, and a command packet is sent to the virtual Bluetooth host control interface 12 and the virtual Bluetooth host control interface.丨 2 After executing the command packet 1 〇 丨, it responds to an event (vent) packet 1 102. Fig. 4C shows a schematic diagram of the virtual Bluetooth host control interface of the near-end computer host sending a request packet to the f pseudo-Bluetooth host control interface of the remote computer host, and the hypothetical second tooth main branch control interface of the near-end computer host. 1 2 Send a request packet. 〇3 to the remote computer host u ^ Virtual Bluetooth host control interface 丨 2, and then the remote computer host 丄 i ’s virtual monitor host control interface 1 2 Return a response packet

Page 9 V. Description of the invention (6)-a __ __ 104 Virtual display to the near-end computer host 10 When there is an event, the control interface 12 of the Lu Zhiya host. Figure 4d. The sound packet of the event packet to the computer host. The virtual Bluetooth host control interface of the Bluetooth host control interface sends the host 1 1 virtual Bluetooth host control S. Figure 4d illustrates that when the remote computer has an event packet 105 to the remote electrical interface 1 An event occurs, which transmits a 11. Machine 11 to inform the remote computer host according to the method of the present invention, after adding a packet of +, it adds a BD jDD ^ 4, industry_machine + monitor RF interface 13 processing

Type (packe ΐ type) and other information, the value of bran / Japanese guardianship (C 1 0 ck) and a packet can be sealed in the physical communication layer 14 transfer wheel and then θ will be packaged (packed) into a broadcast (Broadcast) transmission to the right makes it possible to pass through the host of the communication layer 14. Figure 5 shows the composition of other computers on the same layer of the real body via virtual Bluetooth. Figure 5: BD — ADDR2 (the value of the packet after processing / processing. The Bluetooth BD of the clock number — AI) DR is a clock value that is bad. When the clock value is even, it is " Master " Computer to "Servant" Computer (master_ > s 丨

When the packet value is odd, the packet is transmitted from the "slave" computer to the "master" computer (slave-> master), and the "slave" computer responds to I, and the clock value of the "master" computer is π master The clock value from π computer increases by 1. Packet type 2 2 records the format of the transmitted packet, which includes: i n q u i r y, inquiry-response, page, page-response, and other packet sizes. The packet information 2 3 stores the packets passed down from the previous layer. With this ’, when the virtual Bluetooth RF interface 1 3 uses the next layer to send a packet, the packet may be loopbacked back, and the added BD_ADDR value can avoid receiving the packet itself.

Page 10 504617 V. Description of the invention (7) Pulse B 疋 Go to the packet returned by loopback. At the same time, it can be known by BD-ADDI ^ that the packet belongs to piconet. In each Pi Conet's "master π computer, the virtual Bluetooth radio interface 13 will record those BD-ADDR values belonging to the" slave "computer in its own pi conet. When the" master "computer receives a packet of its BD-ADDR The value really belongs to its own server, the computer, and the clock value is also the clock value of the last packet sent by the "master" computer. When it is processed, it can be determined that the received packet is a response to the last sent packet. The "Bluetooth" computer's virtual Bluetooth radio interface 13 will also record some BDs-the ADDR value belongs to its own "master" computer, when, the "receiver" computer receives a packet whose BD-ADDR value does indeed belong to itself "Master" computer, J AM-ADDR is its own AM-ADDR, then you can determine the packaged _ 'and the packet's own,' Master, 'computer to send to' Servant, 'computer. According to the method of the present invention, the packet is transmitted through the virtual Bluetooth RF interface inquiry packet, the data block of the inqUiry packet is filled with the IAC (Inquiry Access Code) code sent by the definition plane 13, and the host computer of the other The i nqu ry packet is better than the IAC ^ of the inquiry packet on the same network as the waiting lAc ^, all will check (Shi Rue) and respond with an inquiry-res ρ nose packet. If it is a real machine, it can receive the host inqulry-response packets of other hosts connected to the same network. At this time, the host BD_AD value of some other host computers that the host $ sent back responds to. The page packet sent by the virtual I-tooth RF interface 13 can be obtained in accordance with the present invention. Go to ’BD — ADDR values and points of all computer hosts that go through the page, and the packet will be filled with the aIaddr to be entered, such as

504617 V. Description of the invention (8) If other computer hosts agree to connect, they will return a page-response packet, or if other computer hosts do not agree to the connection, no packets will be returned. According to the method of the present invention, polled po 1 1 packets are periodically sent via the virtual Bluetooth radio frequency interface 13 of the master computer host, which is used to confirm whether all connected computer hosts are still online. When the "slave" computer fails to receive any po1 packet sent by the main telegram for more than a period of time (time〇ut period), it is deemed to be disconnected. When the "host π computer sends pol 1 packet to the" quot "computer, the" serv "computer under normal circumstances will also return ρ ο 1 1-res ρ ο nse packet, if, the host π computer exceeds the timeout period (Time 〇utperi 〇d) did not receive the P 〇 1 1-res ρ ο nse packet, it is considered that "the computer is disconnected. The method of simulating Bluetooth communication according to the present invention is very suitable for coding. The software method is used to implement the implementation. Figure 6 shows the flow chart of implementing the Bluetooth communication method using pen-brain software. Step 30 in Figure 6 is: writing a host control interface (HC I) code, which is used to Simulates the data packets of all protocols (pr 〇 〇c 〇1) in the host control interface, so that the computer can simulate the host control interface (HCI) code after the computer executes the host control interface (HCI) code. Received data packets. The host control interface (HC I) code of step 30 is implemented by software as a virtual Bluetooth host control interface 1 2. Steps, steps 31 and 1 are: writing ^ a virtual monitor RF interface Code, which is to simulate the Bluetooth hardware 'cause the computer to execute the virtual

Page 12 504617 V. Description of the invention (9) | After the flounder code, it can simulate the communication of the Bluetooth hardware and the settings of the Bluetooth hardware, and send the packet to the physical communication layer 14. The virtual Bluetooth radio frequency interface code of step 3 丨 is a software implementation of the virtual Bluetooth radio frequency interface step 3. The host control interface (HCI) code of step 30 includes: a host control plane packet processing program code , An iink control program code, an iink manager program code, a UA / UI / US channel program code, and a package Code (packet c〇mp〇ser program code). Each of the codes included in the above-mentioned host control interface (HCI) code implements the host control interface packet processing of FIG. 3 by software means 1 2 0, link control 1 2 1, link management 1 2 2, UA / UI · / US channel 1 2 3, and packet preparation 1 2 4 etc. The code of the virtual Bluetooth radio frequency interface of step 31 is at least one for inputting the host control interface (HCI) code of step 30 / = BD-A_ value, one clock (ClOCk) value, and- The packet type is coded. In addition, the virtual Bluetooth radio call of step 31 (page) and polling (? 〇11) of the data packet process] mq ^ y), the virtual Bluetooth radio of step 31 is executed by the computer host :: 2 :: It can transfer the ring simulated by the Bluetooth hardware: 504617 V. Description of the Invention (ίο) It can use the TCP / IP co-packaging received by the two by using the virtual blue code received by the Ethernet. Furthermore, the muti1-slave dental hardware technology of this scatternet connection function is still an example. The computer passes the physical communication layer 14 to pass the data. The ethernet is used as the physical communication layer 14 for the RF interface program. Code, the eight cases of virtual Bluetooth shooting command and data packets are repacked, and the scheduled UDP broadcast protocol is sealed on the Ethernet upload wheel. In this step, muti and slave pi c0net inventions are provided. Into-to-many connection transmission, as shown in Fig. 7 shows the intention according to the present invention. Is the virtual Bluetooth host in Fig. 7 controlled? "; 丨 surface transmission of piconet and scatternet.

When immature, a complete software test loop is provided. t I The features of the present invention can be summarized as follows: The virtual Bluetooth host control interface and virtual Bluetooth radio of the present invention support the Bluetooth HCI specification. • The present invention uses software simulation to process the data that was originally transmitted through HCI. Tributary interface supports dental hardware. The present invention uses a virtual Bluetooth radio frequency interface to process data packets originally received by the frequency hardware. By blue tooth shooting • The present invention uses a software that supports the Bluetooth H C I specification to provide a software package that can be used to ...

Page 14 504617 V. Description of the invention (11) In the software development process, there is no need to consider Bluetooth hardware defects or problems caused by communication obstacles during the software development process. The invention does not require the use of a Bluetooth chip. The present invention can provide functions not currently supported by Bluetooth hardware, such as a one-to-many connection function. The present invention can simulate various emergencies, so that the software layer can test whether the response to various emergencies is normal. The present invention uses computer software to implement a method for simulating Bluetooth communication, so that the cost is low. The present invention can easily support various network communication protocols through a virtual Bluetooth radio frequency interface. Using the technology disclosed in the present invention, it can be designed as a System On Chip (SOC) system, and becomes a Bluetooth equivalent system without using a Bluetooth chip. Although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and decorations without departing from the spirit and scope of the present invention. Invention guarantee

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504617 Brief description of the diagram Brief description of the diagram Figure 1 shows a schematic diagram of a conventional Bluetooth communication. Figure 2 shows a schematic diagram of an analog Bluetooth communication architecture according to the method of the present invention. Figure 2 shows a schematic diagram of the architecture of a virtual Bluetooth host control interface 12 in Figure 2. Figures 4a to 4d show schematic diagrams of processing H CI packets according to the simulated Bluetooth communication architecture of the method of the present invention. F 5 Figure 5 shows the structure of a packet processed through a virtual Bluetooth RF interface. Figure 6 shows the implementation of computer software. Flow chart of a method for simulating Bluetooth communication. Figure 7 shows a schematic diagram of the one-to-many connection function according to the present invention. 0 Drawing number description 10 Local computer host 11 Remote computer host 12 Virtual Bluetooth host control interface 13 Virtual Bluetooth radio frequency interface 14 Physical communication layer

20 BD.ADDR 2 1 clock 22 packet type 2 3 packet information

Page 17 504617 Brief description of the diagram 30 Steps of writing a host control interface (HC I) code 31 Steps of writing a virtual Bluetooth RF interface code 10 0 General data packet 101 Order packet 102 Event packet 103 Request the other party to respond to the packet 104 Response packet 105 Event packet 120 Host control interface packet processing 121 Link chain control 122 Link chain management 123 UA / UI / US Channel 1 24 Packet preparation

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Claims (1)

504617 6. Scope of patent application 1. A method of computer software 1 mp 1 emented simulation of Bluetooth communication, which is applicable to at least two computers, each of which has a physical communication layer with the same transmission protocol The two computers respectively execute communication software that simulates Bluetooth communication using software to implement the method, so that the two computers simulate communication using Bluetooth hardware. The method includes the following steps:. Writing (coding)- Host control interface (HCI) code, which is used to simulate the processing of all Bluetooth protocol commands and lean packets of the Bluetooth hardware in the host control interface, so that the computer can execute the host control interface (HCI) code after Simulates processing commands and data packets received by the host control interface; Cod i ng-virtual Bluetooth radio frequency interface code, which is used to simulate the Bluetooth hardware, so that the computer executes the virtual Bluetooth radio frequency interface code , Can simulate the communication of the Bluetooth hardware and the settings of the Bluetooth hardware. 2. The method according to item 1 of the scope of patent application, wherein the step of the virtual Bluetooth radio frequency interface code designing the communication of the monitoring hardware is: after the virtual Bluetooth computer executes the virtual radio frequency interface code, The virtual Bluetooth radio frequency interface code packages the received commands and data, and then packs them into packets that can be transmitted at the physical communication layer. 3. The method according to item 1 of the scope of patent application, wherein the host control interface code includes: a host control interface packet processing code (HC I Page 19, 504617 VI. Patent Application (packet processing program code), a link control program code, a link manager program code, and a UA / UI / US channel code (UA / UI / US chanel program code), a packet composer program code. 4. The method according to item 1 of the scope of patent application, wherein the host controls the commands and data packets of all the agreements (pr ο ΐ 〇c ο 1), which are respectively: link chain control (1 inkc ο ntr ο 1) protocol packet, link chain strategy (link c ο ntr ο 1 ρ ο 1 icy) protocol packet, authentication and encryption protocol authentication packet, parameter configuration protocol packet, Hardware information and status (Hardware information and status) protocol packets, data transmission (datatransmissi ο η) protocol packets, flow control (flow control)! ^ ^ ^ M eL. 5. The method according to item 1 of the scope of patent application, wherein the virtual Bluetooth radio frequency interface code has at least one data packet for inputting the data input by the host control interface (HC I) code, adding a BD_ADDR value, A clock (c 1 ck) value and a packet type (packettype) code of the data packet. 6. The method as described in item i of the patent application range, wherein the virtual Bluetooth radio interface code has at least: one for transmitting an inquiry and Page 20 504617 VI. Patent application code Code for calling (page) data packet; and a code for sending data overtime (t i m e 〇 u t p r r 〇 d) data packet. Page 21