JP2010200052A - Radio communication system and radio communication apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio communication system capable of reducing the time required for narrowing down a peripheral device of a communication target, and to provide a radio communication apparatus. <P>SOLUTION: In a radio communication system 100, a radio communication apparatus can search for another radio communication apparatus being present in the periphery. A cellular phone 1a, which executes the search, transmits a search packet including a response condition designating a range of an apparatus address to be searched and/or a provision service class and when a cellular phone 1b that receives the search packet meets the response condition included in the search packet, the cellular phone 1b transmits to the cellular phone 1a a response packet including identification data related to the cellular phone 1b. When the cellular phone 1a receives one or more response packets after transmission of the search packet, the cellular phone 1a specifies the cellular phone 1b that becomes a connection candidate based on the identification data included in the received response packets. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wireless communication system and a wireless communication apparatus that perform direct wireless communication between apparatuses.

  Conventionally, in direct communication between devices such as Bluetooth (registered trademark), connection to various peripheral devices is assumed. By the way, there are many types of peripheral devices, and there are various types such as those that can / cannot perform voice communication and those that have / without a storage function.

  Here, in the case of a one-to-one cable connection such as USB (Universal Serial Bus), the user directly connects to a desired communication partner, so the type of communication partner is clear. On the other hand, in the case of wireless communication connection, it is difficult to determine which device is connected to which device.

  Therefore, in a device that performs direct wireless communication, there is a method of establishing a connection with the selected device by searching for peripheral devices all at once in a wireless manner and allowing the user to select from a list of connectable peripheral devices. (See, for example, Patent Document 1).

  For example, FIG. 9 shows a flow of peripheral device search processing in Bluetooth. The wireless communication device A transmits an inquiry message to the peripheral wireless communication devices B, B ', B ", B"'. The wireless communication device that has received this inquiry message returns an inquiry response including the identification data of its own device to the wireless communication device A.

  The wireless communication device A outputs a list of devices having an inquiry response and accepts a selection input from the user. Furthermore, when acquiring a detailed device name, in the paging process, a device name acquisition request (LMP_name_req) is made to the target wireless communication device, and a response (LMP_name_res) to this is acquired.

JP 2004-254309 A

  However, even with the method of Patent Document 1, it is difficult for the user to identify what kind of peripheral device has been searched, and by receiving a response from an undesired type of device, It takes time to narrow down the connection targets.

  An object of the present invention is to provide a wireless communication system and a wireless communication apparatus that can reduce the time required to narrow down peripheral devices to be communicated.

  The wireless communication system according to the present invention includes a direct wireless communication unit that performs direct wireless communication between devices, and a wireless communication device in which a device address is assigned to the own device or the direct wireless communication unit of the own device. A wireless communication system capable of searching for other wireless communication devices existing in the vicinity, wherein the first wireless communication device that executes the search is a response condition that specifies a range of device addresses to be searched and / or a provided service type The second wireless communication apparatus that transmits the search packet including the search packet and receives the search packet, the second wireless communication apparatus satisfies the response condition included in the search packet when the second wireless communication apparatus satisfies the response condition included in the search packet. A response packet including identification data related to the communication device is transmitted to the first wireless communication device, and the first wireless communication device transmits at least one search packet after transmitting the search packet. When receiving the serial response packet, based on the identification data included in the response packet the received, identifies the second wireless communication device as a connection candidate, and wherein the.

  Further, it is preferable that the first wireless communication device stores the response condition in a predetermined extension area following a prescribed format in the search packet.

  Preferably, the direct wireless communication means corresponds to the extension area when the protocol version of the direct wireless communication is new, and does not correspond to the extension area when the protocol version is old.

  Further, it is preferable that the direct wireless communication unit is a communication unit that performs Bluetooth (registered trademark) communication as the direct wireless communication.

  Preferably, the prescribed format is an access code in an inquiry message, and the extension area is a payload area in the inquiry message specified in an area following the access code.

  In addition, it is preferable that the second wireless communication apparatus transmits the response packet without considering the response condition when the extension area cannot be read.

  In addition, the first wireless communication device further specifies the type of the identification data received by the response packet as the response condition, and the second wireless communication device has the type specified in the response condition. It is preferable to store identification data in the response packet.

  In addition, it is preferable that the first wireless communication device varies the response condition according to a type of an application program being executed when generating the search packet.

  In addition, the first wireless communication device includes a display unit that displays information for specifying the second wireless communication device that is the connection candidate or an audio output unit that outputs audio, and an input unit that specifies the connection candidate; And when at least one of the connection candidates output from the display means or the audio output means is selected by the input means, the second wireless communication apparatus that is the selected connection candidate It is preferable to start direct wireless communication by the direct wireless communication means.

  The wireless communication device according to the present invention includes a direct wireless communication unit that performs direct wireless communication between devices, a storage unit that stores a device address assigned to the device or the direct wireless communication unit of the device itself, Control means for causing the direct wireless communication means to transmit a search packet including a response condition designating a range of addresses and / or a provided service type when a type of a device to be searched is designated, and the control means includes: When the search packet is received, if the own device address stored in the storage means of the own device satisfies the response condition included in the search packet, identification data based on the device address or separately A response packet including identification data relating to its own device stored in the storage means is sent to the direct wireless communication means to the transmission source of the search packet When one or more response packets are received after transmitting the search packet, the wireless communication device as a connection candidate is specified based on the identification data included in the received response packet. Features.

  According to the present invention, when searching for a peripheral device in direct wireless communication, the time required to narrow down the peripheral devices to be communicated can be shortened.

1 is an external perspective view of a mobile phone according to an embodiment of the present invention. It is a block diagram which shows the function of a mobile telephone in the radio | wireless communications system which concerns on embodiment of this invention. It is a figure which shows the content of the search packet transmitted by the mobile telephone which concerns on embodiment of this invention. It is a figure which shows the example of the content of the response condition stored in the payload of the search packet which concerns on embodiment of this invention. It is a figure which shows the example of the content of the response packet which concerns on embodiment of this invention. It is a flowchart which shows the process example of CPU in the mobile telephone which concerns on embodiment of this invention. It is a flowchart which shows the other process example of CPU in the mobile telephone which concerns on embodiment of this invention. It is a flowchart which shows the process of CPU in the mobile telephone (peripheral device) which concerns on embodiment of this invention. It is a figure which shows the flow of the search process of the peripheral device in the conventional Bluetooth.

  Hereinafter, an example of a preferred embodiment of the present invention will be described. In addition, although the mobile telephone 1 is demonstrated as an example of a radio | wireless communication apparatus, this invention is not limited to this. For example, the present invention can be applied to various wireless communication devices such as a PHS (Personal Handyphone System), a PDA (Personal Digital Assistant), a personal computer, a game machine, a navigation device, and a communication module connected thereto. In the present embodiment, the mobile phone 1 will be described as an example in which the mobile phone 1 includes a Bluetooth-compatible direct wireless communication unit.

  FIG. 1 is an external perspective view of a mobile phone 1 according to the present embodiment. FIG. 1 shows a so-called foldable mobile phone, but the mobile phone according to the present invention is not limited to this. For example, a sliding type in which one casing is slid in one direction from a state in which both casings are overlapped, or a rotary type in which one casing is rotated around an axis along the overlapping direction ( Turn type), or a type (straight type) in which the operation unit and the display unit are arranged in one housing and does not have a connecting unit.

  The mobile phone 1 includes an operation unit side body 2 and a display unit side body 3. The operation unit side body 2 includes an operation unit 11 and a microphone 12 into which a voice uttered by a user of the mobile phone 1 is input on the surface unit 10. The operation unit 11 includes a function setting operation button 13 for operating various functions such as various setting functions, a phone book function, and a mail function, and an input operation button 14 for inputting numbers of telephone numbers, mail characters, and the like. , And a determination operation button 15 for performing determination and scrolling in various operations.

  The display unit side body 3 includes a display unit 21 for displaying various types of information on the surface unit 20 and a receiver 22 for outputting the voice of the other party of the call.

  Further, the upper end portion of the operation unit side body 2 and the lower end portion of the display unit side body 3 are connected via a hinge mechanism 4. In addition, the mobile phone 1 relatively rotates the operation unit side body 2 and the display unit side body 3 connected via the hinge mechanism 4, so that the operation unit side body 2 and the display unit side body are rotated. The body 3 can be in an open state (open state), or the operation unit side body 2 and the display unit side body 3 can be folded (closed state). Here, the closed state is a state in which both housings are arranged so as to overlap each other, and the open state is a state in which both housings are arranged so as not to overlap each other.

  FIG. 2 is a block diagram showing functions of the mobile phone 1 (1a, 1b) in the wireless communication system 100 according to the present embodiment. The mobile phone 1a (first wireless communication device) includes an operation unit 11 (input unit), a display unit 21 (display unit), a CPU 30 (control unit), a direct communication unit 31 (direct wireless communication unit), An audio unit 32 (audio output unit), a memory 33 (storage unit), and a public communication unit 34 are provided. The mobile phone 1b (second wireless communication device) may have the same configuration as the mobile phone 1a, but at least the CPU 30 (control means), the direct communication unit 31 (direct wireless communication means), and the memory 33 (storage means).

  The display unit 21 performs predetermined image processing according to the control of the CPU 30. Then, the processed image data is stored in the frame memory and output to the screen at a predetermined timing.

  The CPU 30 controls the entire mobile phone 1 (1a, 1b), and performs predetermined control on the display unit 21, the direct communication unit 31, the audio unit 32, and the like, for example. In addition, the CPU 30 receives input from the operation unit 11 and executes various processes. Then, the CPU 30 controls the memory 33 when executing processing, and reads various programs and data according to the present embodiment and writes data.

  The direct communication unit 31 performs wireless communication with an external device in a predetermined use frequency band (for example, 2.4 GHz band). The direct communication unit 31 demodulates the signal received from the antenna (not shown), supplies the processed signal to the CPU 30, modulates the signal supplied from the CPU 30, and transmits the signal from the antenna to the external device. Send to.

  When searching for another device in the communication area, the mobile phone 1a sequentially transmits a search packet (inquiry message) at a plurality of frequencies in the above-described use frequency band, and waits in a connectable state. Search for devices. The mobile phone 1b that has received the search signal returns a response packet including the device address assigned to the device itself or the direct communication unit 31 of the device itself, the provided service type, and the like. Thereafter, the cellular phone 1a and the cellular phone 1b establish a connection according to a predetermined procedure, and the cellular phone 1a may receive a service (for example, voice transfer or file transfer) provided by the cellular phone 1b. it can.

  The audio unit 32 performs predetermined audio processing on the signal directly supplied from the communication unit 31 or audio data read from the memory 33 under the control of the CPU 30, and outputs the processed signal to the receiver 22. To do. The receiver 22 outputs the signal supplied from the audio unit 32 to the outside. This signal may be output from a speaker (not shown) instead of or together with the receiver 22.

  In addition, the voice unit 32 processes a signal input from the microphone 12 according to the control of the CPU 30, and outputs the processed signal directly to the communication unit 31. The direct communication unit 31 performs a predetermined process on the signal supplied from the audio unit 32 and outputs the processed signal from the antenna.

  The memory 33 includes, for example, a working memory and is used for arithmetic processing by the CPU 30. In addition, various programs according to the present embodiment and the device address assigned to the own device or the direct communication unit 31 of the own device are stored, and read by the CPU 30 as appropriate. Note that the memory 33 may also serve as a removable external memory.

  The public communication unit 34 performs wireless communication with an external device in a predetermined use frequency band (for example, 800 MHz band, 2 GHz band, etc.). Specifically, for example, voice data is exchanged with other telephones by CDMA2000_1x wireless communication to perform a user-to-user call. At this time, if there is a wireless communication device having the same configuration as the cellular phone 1b, for example, a hands-free set in which an earphone and a microphone are integrated, voice data communicated by the public communication unit 34 is transferred directly by the communication unit 31. And hands-free calling becomes possible.

  FIG. 3 is a diagram showing the contents of a search packet (inquiry message) transmitted by the mobile phone 1a according to the present embodiment.

  As shown in FIG. 3A, the search packet includes 68 bits or 72 bits of access code (Access Code), 54 bits of header (Header), and 0 to 2745 bits of payload (Payload). It consists of areas. Here, when the protocol version to be used is new (Extended Inquiry), the access code is 72 bits, and the extension areas of the header and the payload can be used. On the other hand, if the protocol version is old, the header and payload are not used and the access code is 68 bits.

  Further, as shown in FIG. 3B, the access code includes a 4-bit trailer part (Preamble) for clock synchronization, a 64-bit code part (Sync Word) for channel identification, and a 4-bit trailer. It is comprised from the part (Trailer). The trailer part is added in the case of the new version of the protocol, and is 72 bits as a whole.

  Here, the cellular phone 1 a corresponds to the new version of the protocol, and stores the response condition from the peripheral device that has received the search packet in the payload area under the control of the CPU 30.

  FIG. 4 is a diagram showing an example of the contents of response conditions stored in the payload of the search packet according to the present embodiment.

  First, the CPU 30 designates the type of identification information desired to be acquired from the peripheral device by setting a predetermined flag. Specifically, for example, the device name is specified to be included in the response packet by setting the “Local Name” flag, and the manufacturer name is specified to be included in the response packet by setting the “Manufacturer Specific Data” flag. To do.

  Next, the CPU 30 stores the start address and end address of the range specification following the flag indicating whether or not to specify the range of the device address (“BD_ADDR” search flag). Further, the CPU 30 stores one or a plurality of IDs representing the designated profile following a flag (“Profile” search flag) indicating whether or not to designate a profile (provided service type).

  Here, the response condition is determined according to the type of the application program running on the mobile phone 1a. For example, the CPU 30 of the mobile phone 1a determines a hands-free device for voice transmission of a phone, and a device having a memory such as the mobile phone 1b if a data folder is being expanded, and sets the response condition. When an application program that can determine the response condition is not running or when a predetermined operation input is received, the response condition is generated by a selection input from the user.

  Note that the data length of the payload varies depending on the amount of the generated response condition, and is classified into a plurality of types of packets (for example, DM1, DM3, DM5, DH1, DH3, and DH5) having different capacities. Thereby, the packet capacity can be saved and the reduction in communication speed can be suppressed.

  The peripheral device (for example, the mobile phone 1b) that has received the search packet including these response conditions reads the response condition in the payload area when it supports the new version of the protocol. When the own device satisfies the device address range specification and profile specification conditions, a response packet is returned to the mobile phone 1a. At this time, the identification information specified by the response condition is stored in the response packet.

  On the other hand, when the protocol version of the peripheral device that has received the search packet is old, the payload area that is the extension area cannot be read. Then, this peripheral device returns a response packet in which only specified identification information (for example, a device address) is set without determining whether or not the response condition is satisfied.

  That is, when the protocol version of the peripheral device is new, the mobile phone 1a receives the necessary information as a response packet only from the necessary type of device. Even when the protocol version is old, since the mobile phone 1a receives the response packet, there is no search omission and the connection destination is selected after the search.

  FIG. 5 is a diagram showing a content example of a response packet (inquiry response) transmitted from the mobile phone 1b according to the present embodiment to the mobile phone 1a.

  In this example, a device name (“Complete Local Name”) and a list of profiles (“Complete list of 16-bit Service Class UUIDs”) are sequentially stored as identification information. Each piece of identification information stores actual data following the data length and the name of the identification information.

  The mobile phone 1a that has received this response packet presents a list of connectable candidate devices to the user together with response packets received from other peripheral devices. Specifically, the CPU 30 accepts a selection input from the user by displaying the acquired identification information in a list on the display unit 21. Further, the CPU 30 may present the candidate device list to the user by voice output from the voice unit 32.

  Here, there may be a plurality of connection destination devices that accept selection input from the user. When a plurality of items are selected, the mobile phone 1a establishes a one-to-many connection and starts communication.

  FIG. 6 is a flowchart showing a processing example of the CPU 30 in the mobile phone 1a according to the present embodiment. In this example, the mobile phone 1a specifies a response condition by an operation input from the user and searches for peripheral devices.

  In step S <b> 1, the CPU 30 receives a predetermined instruction operation input for searching for a peripheral device from the user via the operation unit 11.

  In step S <b> 2, the CPU 30 determines whether to search for a peripheral device under a specific condition, that is, whether to accept a device address range specification or profile specification. If this determination is YES, the process proceeds to step S4, and if the determination is NO, the process proceeds to step S3.

  In step S3, the CPU 30 does not specify a response condition, so the access code of the inquiry message is set to the conventional format (68 bits).

  In step S4, since the CPU 30 designates the response condition, the access code of the inquiry message is set to a new format (72 bits). As a result, the CPU 30 makes the payload area of the inquiry message available.

  In step S5, the CPU 30 receives an input of response conditions from the user. Specifically, the settable response condition options are displayed on the display unit 21 and a selection input from the options is accepted.

  In step S6, the CPU 30 stores the response condition accepted in step S5 in the payload area of the inquiry message in the predetermined format shown in FIG.

  In step S7, the CPU 30 transmits the inquiry message set up to step S6 to the peripheral device as a search packet.

  In step S8, the CPU 30 receives a response packet transmitted from the peripheral device in response to the search packet in step S7. Here, although the response packet is transmitted from the peripheral device A having the old protocol version and the peripheral device B satisfying the response condition set in step S5, the response packet is transmitted from the peripheral device C not satisfying the response condition. Not sent.

  In step S9, the CPU 30 acquires identification information such as the device address and name of the peripheral device from the response packet received in step S8.

  In step S10, the CPU 30 performs paging transmission in order to acquire the name of the peripheral device A with the old protocol version (see FIG. 9). Note that the name of the peripheral device B can be acquired from the response packet received in step S8.

  In step S11, the CPU 30 receives a response corresponding to the paging transmission in step S10 (see FIG. 9).

  In step S12, the CPU 30 acquires the name of the peripheral device A from the response received in step S11. Thereby, the identification information of the searched peripheral device A and peripheral device B is collected.

  In step S <b> 13, the CPU 30 displays a peripheral device list on the display unit 21 based on the collected identification information such as the device name. Then, a connection destination selection input is accepted from the user, and negotiation is started with the selected connection destination to start communication. Since unnecessary peripheral devices are not displayed in the list, the user can easily select a desired peripheral device.

  FIG. 7 is a flowchart showing another process example of the CPU 30 in the mobile phone 1a according to the present embodiment. In this example, the mobile phone 1a searches for a peripheral device according to the type of the application program being activated.

  In step S21, the CPU 30 executes a predetermined application (for example, Music Player), and starts music reproduction.

  In step S22, the CPU 30 receives an operation input for searching for peripheral devices. Alternatively, when execution of an application is instructed by user input, the search process may be automatically started by the application at a predetermined timing. At this time, the CPU 30 specifies an application in use, and also refers to a correspondence list between application programs stored in the memory 33 and available peripheral device information, and specifies a search target for the application in use. .

  In step S23, the CPU 30 sets the access code of the inquiry message in a new format (72 bits) in order to specify a response condition. As a result, the CPU 30 makes the payload area of the inquiry message available. Step S23 is an operation when the application in use is in the correspondence list in the memory 33. If it is not in the correspondence list, the inquiry message is transmitted without setting 72 bits at step S23 or without setting response conditions at step S24.

  In step S24, the CPU 30 sets “HSP” and “HFP” audio transfer profiles as response conditions in the payload area of the inquiry message in order to search for the output destination of the music started to be played in step S21. .

  In step S25, the CPU 30 transmits the inquiry message set in step S24 to the peripheral device as a search packet.

  In step S26, a response packet transmitted from the peripheral device in response to the search packet in step S25 is received. Here, although the response packet is transmitted from the peripheral device A and the peripheral device B that satisfy the response condition set in step S25, the response packet is transmitted from the peripheral device C and the peripheral device D that do not satisfy the response condition. Not.

  In step S27, the CPU 30 acquires identification information such as device addresses, names, and profiles of the peripheral device A and the peripheral device B from the response packet received in step S26.

  In step S28, the CPU 30 displays a peripheral device list on the display unit 21 based on the identification information such as the device name and profile acquired in step S27. Here, the peripheral device C and the peripheral device D that have not received the response packet are not included in the list.

  In step S29, the CPU 30 receives a selection input of a device to be connected from the user. Further, if the priority condition is set in advance in the memory 33 for each type of peripheral device for the application, the CPU 30 automatically selects the connected device having the highest priority from those searched according to this priority condition. You may choose.

  In step S30, the CPU 30 transmits a connection request signal to the peripheral device (for example, peripheral device A) selected in step S29.

  In step S31, the CPU 30 receives a connection permission response signal from the peripheral device A in response to the connection request in step S30.

  In step S <b> 32, the CPU 30 establishes a connection with the peripheral device A that has received the permission response in step S <b> 31, and executes voice transfer processing using the service “HSP” provided by the peripheral device A.

  In this processing, the description has been made taking voice (music) transfer as an example, but the type of application program is not limited to this. For example, if the data folder is being expanded, the CPU 30 searches for peripheral devices by specifying a profile of “FTP” or “OP”, and executes a file transfer process. In addition, user convenience is improved by setting corresponding profiles in advance in the memory 33 for various application programs.

  FIG. 8 is a flowchart showing the processing of the CPU 30 in the mobile phone 1b (peripheral device) according to the present embodiment.

  In step S41, the CPU 30 of the mobile phone 1b (slave) analyzes the inquiry message received from the mobile phone 1a (master) and reads the response condition stored in the payload area.

  In step S42, the CPU 30 determines whether or not the desired information bit in the response condition (for example, the “Local Name” flag and the “Manufacturer Specific Data” flag in FIG. 4) is set. If this determination is YES, the process proceeds to step S43, and if the determination is NO, the process proceeds to step S44.

  In step S43, the CPU 30 includes, in the inquiry response, desired information (for example, device name or manufacturer name) in which the bit determined in step S42 is set.

  In step S44, the CPU 30 determines whether or not the device address range designation bit (“BD_ADDR” search flag in FIG. 4) is set in the response condition. If this determination is YES, the process proceeds to step S45, and if the determination is NO, the process proceeds to step S47.

  In step S45, CPU 30 determines whether or not the device address of its own device (mobile phone 1b) is within the device address range specified in the response condition. If this determination is YES, the process proceeds to step S46, and if the determination is NO, the process proceeds to step S50.

  In step S46, the CPU 30 sets the response transmission flag to “TRUE” and transmits an inquiry response because the device itself satisfies the response condition.

  In step S47, the CPU 30 determines whether or not a profile designation bit (“Profile” search flag in FIG. 4) is set in the response condition. If this determination is YES, the process proceeds to step S48, and if the determination is NO, the process proceeds to step S51.

  In step S48, the CPU 30 determines whether or not the own apparatus is applicable to the profile specified in the response condition. If this determination is YES, the process proceeds to step S49, and if the determination is NO, the process proceeds to step S50.

  In step S49, since the own device satisfies the response condition, the CPU 30 sets the applicable profile information in the inquiry response and sets the response transmission flag to “TRUE”.

  In step S50, the CPU 30 sets the response transmission flag to “FALSE” and does not transmit the inquiry response because the own device does not satisfy the response condition.

  In step S51, the CPU 30 determines whether or not the response transmission flag is “TRUE”. When this determination is YES, an inquiry response is transmitted to the master, and when the determination is NO, no response is transmitted.

  As described above, according to the present embodiment, when searching for a peripheral device in Bluetooth communication, a device of a desired type can be specified as a response condition, and a response from a device that does not satisfy the response condition can be suppressed. The time required for the user to narrow down the peripheral devices to be communicated after receiving can be shortened.

  In addition, since a response packet (inquiry response) including only necessary information is transmitted from a necessary peripheral device, transmission / reception time can be shortened, and peripheral device search time can be shortened. Furthermore, radio resources are efficiently used.

  Also, depending on the type of application program being used, the corresponding profile can be automatically specified, so that it is possible to easily search for a connected device by excluding devices that are unlikely to be used.

  Furthermore, in this embodiment, the peripheral device search process can be executed regardless of the difference in the Bluetooth protocol version. That is, even in the old version, the response packet is returned, and in the new version, the response packet is returned from the device narrowed down according to the response condition. As a result, it is possible to search without omission regardless of whether the protocol version is new or old, and it is possible to narrow down reliably and at high speed while considering the old and new.

  In the present embodiment, the search process is executed by transmitting and receiving a search packet and a response packet according to the Bluetooth standard. Therefore, it does not use special data that deviates from this standard, so it is highly versatile.

  As mentioned above, although embodiment of this invention was described, this invention is not restricted to embodiment mentioned above. The effects described in the embodiments of the present invention are only the most preferable effects resulting from the present invention, and the effects of the present invention are limited to those described in the embodiments of the present invention. is not.

  For example, the present invention can be applied to any wireless device capable of direct communication having the same device type other than Bluetooth.

1 Mobile phone (wireless communication device)
1a mobile phone (first wireless communication device)
1b Mobile phone (second wireless communication device)
11 Operation unit (input means)
21 Display section (display means)
30 CPU (control means)
31 Direct communication unit (Direct wireless communication means)
32 Voice part (voice output means)
33 Memory (storage means)
34 Public Communication Department

Claims (10)

Other wireless communication having a direct wireless communication unit for performing direct wireless communication between devices, and a wireless communication device assigned with a device address assigned to the device or the direct wireless communication unit of the device itself A wireless communication system capable of searching for a device,
The first wireless communication device that executes the search transmits a search packet including a response condition that specifies a range of device addresses to be searched and / or a provided service type,
The second wireless communication apparatus that has received the search packet has a response that includes identification data related to the second wireless communication apparatus when the second wireless communication apparatus satisfies a response condition included in the search packet. Transmitting the packet to the first wireless communication device;
When the first wireless communication device receives one or more response packets after transmitting the search packet, the first wireless communication device becomes a connection candidate based on the identification data included in the received response packet. Identify the wireless communication device,
A wireless communication system. The first wireless communication device stores the response condition in a predetermined extension area following a prescribed format in the search packet.
The wireless communication system according to claim 1. The direct wireless communication means corresponds to the extension region when the protocol version of the direct wireless communication is new, and does not correspond to the extension region when the protocol version is old.
The wireless communication system according to claim 2. The direct wireless communication means is a communication means for performing Bluetooth (registered trademark) communication as the direct wireless communication.
The wireless communication system according to claim 3. The prescribed format is an access code in an inquiry message,
The extension area is a payload area in the inquiry message specified in an area following the access code.
The wireless communication system according to claim 4. The second wireless communication device transmits the response packet without considering the response condition when the extension area cannot be read.
The wireless communication system according to claim 2, wherein the wireless communication system is a wireless communication system. The first wireless communication device further specifies the type of the identification data received by the response packet as the response condition,
The second wireless communication device stores identification data of a type specified by the response condition in the response packet.
The wireless communication system according to claim 1, wherein the wireless communication system is a wireless communication system. When the first wireless communication device generates the search packet, the first wireless communication device changes the response condition according to a type of an application program being executed.
The wireless communication system according to claim 1, wherein the wireless communication system is a wireless communication system. The first wireless communication apparatus further includes: a display unit that displays information for specifying the second wireless communication device that is the connection candidate; or a voice output unit that outputs a voice; and an input unit that specifies the connection candidate. Prepared,
When at least one of the connection candidates output from the display unit or the audio output unit is selected by the input unit, the direct wireless communication with the second wireless communication apparatus that is the selected connection candidate is performed. Start direct wireless communication by means of communication,
The wireless communication system according to claim 1, wherein the wireless communication system is a wireless communication system. Direct wireless communication means for performing direct wireless communication between devices;
Storage means for storing a device address assigned to the device itself or the direct wireless communication device of the device itself;
Control means for transmitting a search packet including a response condition designating a range of addresses and / or a provided service type by the direct wireless communication means when the type of the device to be searched is designated,
The control means includes
When the search packet is received, if the own device address stored in the storage unit of the own device satisfies the response condition included in the search packet, the identification data based on the device address or the separate storage A response packet containing identification data relating to the own device stored in the means is returned to the transmission source of the search packet by the direct wireless communication means,
When one or more response packets are received after transmitting the search packet, a wireless communication device that is a connection candidate is specified based on identification data included in the received response packet.
A wireless communication apparatus.

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