KR102178308B1 - Apparatus and method for communicating between devices in a wireless communication system - Google Patents

Abstract

The present invention relates to a device-to-device communication method and apparatus in a wireless communication system, wherein the method of operating an electronic device wirelessly transmits graphic data for display on a first display of a cover device to the cover device. And receiving a user input on a second display of the electronic device, and stopping display of graphic data on the first display of the cover device based on the user input. have.

Description

Communication method and device between devices in a wireless communication system {APPARATUS AND METHOD FOR COMMUNICATING BETWEEN DEVICES IN A WIRELESS COMMUNICATION SYSTEM}

The present invention relates to a method and apparatus for communication between short-range devices in a wireless communication system.

In general, in a wireless communication system, a device may perform a discovery and association procedure to establish a connection with another device located in a short distance and perform communication. For example, the 802.11 standard provides a communication method between devices located in a short distance using a contention-based wireless channel access method through a discovery and association procedure. That is, when a specific terminal accesses a wireless channel through competition with other devices located in an adjacent area, time resources for data transmission and reception to other devices located in a short distance can be secured. However, this method has a problem in that communication with a specific device cannot be stably performed because the device must compete with a plurality of devices for wireless channel access. For example, in a situation in which a specific device needs to transmit and receive high-capacity data with very high QoS requirements, and a number of devices in close proximity want to access a wireless channel, a specific device and other devices have resources due to limited resources. The ratio of which can be used decreases, and this makes it impossible for certain devices and other devices to transmit high-capacity data seamlessly. The deterioration of the transmission performance of such a device becomes more pronounced as the number of devices located in a short distance increases.

Accordingly, there is a need to provide a communication method for stably performing communication between devices located in a short distance.

Accordingly, an embodiment of the present invention is to provide a method and apparatus for stable communication between devices in a wireless communication system.

Another embodiment of the present invention is to provide a method and apparatus for a device to communicate with a predetermined specific device at low power in a wireless communication system.

Another embodiment of the present invention is to provide a method and an apparatus for a device to communicate with other devices and a predetermined device using one modem chip in a wireless communication system.

Another embodiment of the present invention is to provide a method and apparatus for determining a resource for a device to communicate with a predetermined specific device in a wireless communication system.

In another embodiment of the present invention, in a wireless communication system, a device divides a communication section into a first section and a second section, communicates with other unspecified devices in the first section, and communicates with a predetermined device in the second section. It is to provide a method and apparatus for communicating.

Another embodiment of the present invention is to provide a method and an apparatus for designing an antenna in consideration of communication between specific devices in a wireless communication system and communicating using the designed antenna.

According to an embodiment of the present invention, a method of operating an electronic device includes a process of wirelessly transmitting graphic data for display on a first display of a cover device to the cover device, and 2 A process of receiving a user input on a display and a process of stopping display of graphic data on the first display of the cover device based on the user input may be included.

According to an embodiment of the present invention, a method of operating a cover device includes a process of receiving graphic data for display on a first display of the cover device from an electronic device, and displaying based on the graphic data. A process of performing an operation, and the display operation of the cover device may be stopped based on a user input on the second display of the electronic device.

According to an embodiment of the present invention, an electronic device includes a transceiver and at least one processor connected to the transceiver. The at least one processor wirelessly transmits graphic data for display on a first display of the cover device to the cover device, and receives a user input on a second display of the electronic device. And, based on the user input, the cover device may control to stop displaying the graphic data on the first display.

In the present invention, a device communicates with a predetermined specific device at low power in a wireless communication system, so that communication can be performed stably without interfering with communication links of other devices located in a short distance. In addition, in the present invention, in the Munsun communication system, the device divides the communication section into a first section and a second section, communicates with other unspecified devices in the first section, and communicates with a predetermined specific device in the second section, One modem chip can communicate with a specific device while communicating with an unspecified device located in a short distance. In addition, in the present invention, the device communicates with a specific device located in a short distance by using the channel resources occupied by unspecified devices, so that stable communication can be performed even when a large number of devices attempt to access the channel. Can be obtained. In addition, in the present invention, by using an antenna designed in consideration of communication between specific devices, there is an effect of reducing the overhead required for setting the beam direction.

1 is a diagram showing a communication method between a terminal and another terminal and a cover according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a procedure for determining a communication resource with a cover in a terminal according to an embodiment of the present invention;
3 is a diagram illustrating a procedure for determining a passive communication resource through channel monitoring in a terminal according to an embodiment of the present invention;
4 is a diagram illustrating an active communication resource determination procedure through channel monitoring in a terminal according to an embodiment of the present invention;
5A is a diagram showing a communication procedure with a cover in a terminal according to an embodiment of the present invention;
5B is a diagram illustrating a communication procedure with a terminal in a cover according to an embodiment of the present invention;
5C is a diagram illustrating a communication procedure between a terminal and a cover according to an embodiment of the present invention;
5D is a diagram showing a structure of a resource allocation message transmitted from a terminal to a cover according to an embodiment of the present invention;
6A is a diagram illustrating a procedure for changing a communication state of a cover in a terminal according to an embodiment of the present invention;
6B is a diagram illustrating a procedure for changing a communication state according to control of a terminal in a cover according to an embodiment of the present invention;
6C is a diagram showing a structure of a communication status information message transmitted from a terminal to a cover according to an embodiment of the present invention;
6D is a diagram showing a screen configuration of a terminal and a cover according to an embodiment of the present invention;
7A is a diagram illustrating a procedure for performing communication with a cover using a predetermined specific beam direction in a terminal according to an embodiment of the present invention;
7B is a diagram illustrating a beam direction between a terminal and a cover according to an embodiment of the present invention;
7C is a view showing an antenna mounting position in a cover according to an embodiment of the present invention;
8A is a view showing antenna mounting positions of a terminal and a cover according to an embodiment of the present invention;
8B is a diagram illustrating an example of an antenna structure of a terminal and a cover according to an embodiment of the present invention;
8C is a diagram illustrating another example of an antenna structure of a terminal and a cover according to an embodiment of the present invention;
9 is a diagram showing a block configuration of a terminal according to an embodiment of the present invention, and
10 is a view showing a block configuration of a cover according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Further, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of users or operators. Therefore, the definition should be made based on the contents throughout this specification.

Hereinafter, some embodiments will be described in detail through exemplary drawings. In adding reference numerals to elements of each drawing, it should be noted that even though they are displayed on different drawings, the same elements are assigned the same numerals as possible. In addition, in describing an embodiment of the present specification, if it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present specification, a detailed description thereof will be omitted.

In addition, in describing the constituent elements of the present specification, terms such as first, second, A, B, (a), (b) may be used. These terms are only for distinguishing the component from other components, and the nature of the component is not limited to a sequence or order by the term. When a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but another component between each component It should be understood that may be “connected”, “coupled” or “connected”.

A terminal (mobile station, MS) according to an embodiment of the present invention may be fixed or mobile, and a user equipment (UE), a mobile terminal (MT), a user terminal (UT), a subscriber station (SS), a wireless device ( wireless device), personal digital assistant (PDA), wireless modem, handheld device, device, and the like.

In the following description of the present invention, a method and an apparatus for stable communication between terminals in a wireless communication system will be described. In particular, in an embodiment of the present invention, a method and an apparatus for stably communicating between terminals located in a short distance will be described. Hereinafter, for convenience of description, communication between a terminal and a cover is described as an example, but the embodiments described below may be equally applied to communication between a terminal and another terminal, or between a terminal and an accessory device. In an embodiment of the present invention, the cover is one of accessory devices used with the portable device at a location close to the portable device, and may include a wireless communication module. Depending on the embodiment, accessory devices such as a cover include a wireless communication module, and may additionally include a display device and a memory. Accessory devices may include a cover, a flip cover, a protective case, an electronic pen, a mobile phone ring, an earphone, and an ear cap.

1 shows a communication method between a terminal and another terminal and a cover according to an embodiment of the present invention.

As shown in FIG. 1, the terminal 100 communicates with the other terminal 102 based on the standard standard during the normal period (112). For example, the terminal 100 may search for an unspecified terminal 102 in the vicinity according to the standard standard of the general section 112 and 802.11, and may communicate 110 by connecting with the searched other terminal 102. In addition, according to an embodiment of the present invention, the terminal 100 may perform communication 120 with the cover 104 within a close distance during a cover interval 122. For example, the cover 104 includes the second display device 106, so that graphic data received from the terminal 100 may be displayed on the second display device 106. In this case, the cover 104 may serve as an additional display device for the terminal 100. As another example, although not shown, the cover 104 includes a memory, so that data received from the terminal 100 may be stored in the memory. In this case, the cover 104 may serve as an additional memory for the terminal 100.

In an embodiment of the present invention, it is assumed that the cover 104 communicates only with a predetermined terminal 100 and does not communicate with other terminals 102 other than the predetermined terminal 100. In addition, in general, since the terminal 100 and the cover 104 are located at a very close distance between each other, in the embodiment of the present invention, the terminal 100 and the cover 104 communicate using very small power, (102) should not interfere with communication. Here, the power used for communication between the terminal 100 and the cover 104 may be preset in the design stage through an experiment.

In an embodiment of the present invention, in order to prevent the communication between the terminal 100 and the cover 104 from affecting the communication of the other terminal 102, the cover 104 may be designed to form a shielded space. For example, a shielding space for electrical signals may be configured in the cover 104 so that electrical signals communicated between the terminal 100 and the cover 104 are not transmitted to the outside outside the cover 104. A detailed description of this will be described in detail in FIGS. 8A to 8C below.

According to an embodiment of the present invention, the cover interval 122 is a section for the terminal 100 to communicate with the cover 104, and is generally not used for communication between terminals or between the terminal and the base station. It may be configured or configured as a passively or actively determined section according to the channel occupancy situation. For example, the cover interval 122 includes communication between terminals, such as Inter Frame Space (IFS), Short Inter Frame Space (SIFS), Distributed Inter Frame Space (DIFS), and Guard Time, or between terminals and AP ( Access Point) or a section that is not used for communication between base stations. Here, IFS refers to a time interval in which multiple UEs simultaneously access a wireless channel in a wireless communication network and wait to avoid collision, and SIFS refers to a minimum IFS. In addition, DIFS refers to a time interval in which the terminal should wait from the point of last use of the AP when the terminal accesses the AP. In addition, the cover interval 122 may be configured as a channel interval occupied by another terminal, or may be configured as a channel interval occupied by transmission of a channel occupancy signal of the terminal 100. According to an embodiment of the present invention, the length and position of the cover interval 122 may be dynamically adjusted according to the service and channel conditions of the cover.

In addition, according to an embodiment of the present invention, when the terminal has one communication modem, it communicates with the cover 104 during the cover interval 122, and thus does not transmit and receive packets with other terminals around it. Accordingly, the terminal 104 having one communication modem may perform dedicated communication for the cover 104 by setting the antenna beam direction for communication with the cover 104 during the cover interval 122 section.

2 illustrates a procedure for determining a communication resource with a cover in a terminal according to an embodiment of the present invention.

2, the terminal checks whether a communication event with a cover is detected in step 201. For example, a communication event with the cover may be detected by a user request or execution of a service that requires communication with the cover. In a more detailed example, when a user requests a display from a second display device included in the cover, when an application that performs display is executed through the second display device included in the cover, the user may be included in the cover. It can be detected that a communication event with the cover occurs when a storage request is made to the memory or when an application that performs storage in the memory included in the cover is executed.

In step 203, the terminal determines a section that is not used by another terminal as a cover interval. For example, the terminal may determine a time (eg, IFS, SIFS, DIFS, or guard time) that the terminal waits without performing communication as the cover interval, other than the communication interval of the terminal defined in the standard standard.

Thereafter, the terminal checks whether additional resources are required in step 205. That is, the terminal checks whether additional resources other than the cover interval determined in step 203 are required for communication with the cover. For example, the terminal can determine whether additional resource allocation is necessary based on the type of application that requested communication with the cover, the amount of data to be transmitted and received with the cover, the amount of the cover interval, and whether data to be transmitted or received with the cover can be delayed. have. If it is determined that the additional resource is not required, the terminal terminates the communication resource determination procedure according to an embodiment of the present invention.

On the other hand, if it is determined that additional resources are required, the terminal monitors the channel in step 207 to determine whether channel use is detected. For example, the terminal monitors the channel and checks whether a packet is received from another terminal. In this case, when a packet is received from another terminal, the terminal determines that the channel is in use, and when a packet is not received from another terminal, the terminal may determine that no terminal is using the channel.

If it is determined that the channel is in use, the terminal proceeds to step 209 to check whether communication with another terminal is necessary. For example, the terminal obtains the destination address of the packet from the header of the packet received from another terminal, and determines whether the destination of the packet is the terminal itself or another terminal based on the obtained destination address. When the destination address included in the received packet is the same as that of the terminal itself, the terminal may determine that communication with another terminal that transmitted the received packet is necessary. On the other hand, when the destination address included in the received packet is different from the address of the terminal itself, the terminal detects a communication situation of other terminals, and the terminal itself may determine that communication with the other terminal is not required.

If communication with another terminal is required, the terminal performs communication with the other terminal according to the standard standard in step 211, and ends the communication resource determination procedure according to an embodiment of the present invention. Thereafter, the terminal may re-perform the communication resource determination procedure according to an embodiment of the present invention. Here, the terminal may first perform communication with a high priority according to a preset priority when a situation requiring communication with another terminal is detected while a communication event with the cover is detected. For example, the terminal may perform communication with another terminal first, and then control communication with the cover to be performed after communication with the other terminal is terminated. As another example, the terminal may perform communication with the cover first, and then control the communication with another terminal to be performed. In this case, the terminal may request to select whether to first communicate with which device from among the cover and other terminals through the display device. In addition, the terminal may display a message or graphic data indicating that communication with another device is delayed due to communication with a specific device.

Meanwhile, when it is determined that the channel is not in use as a result of the inspection in step 207, the terminal proceeds to step 215 to occupy a channel section through contention, and determine the occupied channel as a cover interval. For example, the terminal may occupy a channel section for communication with the cover by transmitting RTS (Ready To Send)/CTS (Clear To Send) or self-CTS for channel occupancy to other nearby terminals. Here, the RTS signal is a signal in which the terminal informs the receiving terminal of the intention to transmit data, and the CTS signal is a signal allowing the terminal receiving the RTS signal to transmit data to the transmitting terminal. In addition, the self CTS signal refers to a signal transmitted by a terminal that has not received an RTS signal to a neighboring terminal to occupy a channel. A terminal according to an embodiment of the present invention may occupy a corresponding channel resource by including information on a channel resource interval required for RTS or self-CTS. After determining the cover interval, the terminal ends the communication resource determination procedure according to an embodiment of the present invention.

On the other hand, if the terminal does not require communication with other terminals as a result of the examination in step 209, in step 213, the terminal determines a channel interval used by other terminals as a cover interval. For example, the terminal may check channel occupied resources of corresponding other terminals from a received packet for communication of other terminals, and determine the identified channel occupied resource as a cover interval for communication between the terminal and the cover. Here, the terminal obtains information on the channel interval through which the other terminals communicate from the channel occupancy interval field included in the header of the received packet, sets a timer corresponding to the obtained channel interval information, and covers the operation interval of the timer. Can be determined by interval. Here, the reason that the terminal determines the channel resource (eg, a time interval) occupied by other terminals as the cover interval is because the communication power between the terminal and the cover is small enough not to interfere with other nearby terminals. After determining the cover interval, the terminal ends the communication resource determination procedure according to an embodiment of the present invention.

3 is a diagram illustrating a procedure for determining a passive communication resource through channel monitoring in a terminal according to an embodiment of the present invention.

As shown in FIG. 3, the terminal detects a packet through channel monitoring in step 301, and checks the destination address of the packet detected through channel monitoring in step 303. The terminal checks whether the destination address of the packet detected in step 305 is the terminal's own address. If the destination address of the detected packet is not its own address, the terminal continues to receive and decode the payload after receiving the packet header in step 315. That is, if the destination address included in the header of the detected packet is its own address, the terminal may additionally receive the payload after the header of the packet and perform communication with the terminal that transmitted the packet according to the standard standard. . Thereafter, the terminal ends the passive communication resource determination procedure according to an embodiment of the present invention. Here, the terminal having finished the passive communication resource determination procedure may re-perform the passive communication resource determination procedure or may perform an active communication resource determination procedure.

On the other hand, if the destination address of the detected packet is not its own address, the terminal allocates a section corresponding to the section of the packet detected in step 307 as a cover interval. For example, the terminal may check channel section information included in the header of the detected packet, and determine the confirmed channel section as the cover interval. Here, as a result of the channel monitoring, since the packet destined for itself has not been received, the terminal itself can recognize that there are no packets to be received from other terminals during the corresponding channel period. The terminal performs data communication with the cover through the cover interval allocated in step 309, and checks whether additional resources are required in step 311. For example, the terminal may determine whether additional resources are required based on a communication throughput with a cover. In addition, the terminal may determine whether or not an additional resource is required based on the amount of data transmitted and received with the cover and the allocated cover interval interval. If it is determined that no additional resources are required, the terminal ends the passive communication resource determination procedure according to an embodiment of the present invention.

On the other hand, if it is determined that additional resources are required, the terminal proceeds to step 313 to occupy a channel section through contention, and allocates the occupied channel section as a cover interval. Here, occupying a channel section through contention and allocating the occupied channel section as a cover interval may be performed in the same manner as steps 403 to 405 of FIG. 4 below. Thereafter, the terminal ends the passive communication resource determination procedure according to an embodiment of the present invention.

4 is a diagram illustrating a procedure for determining an active communication resource through channel monitoring in a terminal according to an embodiment of the present invention.

Referring to FIG. 4, in step 401, the UE detects that a channel is not occupied through channel monitoring. For example, when no packet is received through channel monitoring, the terminal may determine that there are no other terminals that are accessing the channel or other terminals that want to access the channel, and determine that the channel is not occupied by other terminals.

In step 403, the terminal transmits a channel occupancy signal including a specific interval value to other nearby terminals. For example, the terminal may transmit an RTS (Ready To Send) signal including information on a channel section to be used for communication with a cover or a self-CTS signal to other nearby terminals. Other nearby terminals that have received the RTS signal or self-CTS signal of the terminal recognize that the terminal is communicating during the corresponding channel period, and do not attempt to communicate with the terminal during the corresponding channel period.

Thereafter, the terminal proceeds to step 405 and allocates a specific section corresponding to the specific section value included in the channel occupancy signal as a cover interval. Thereafter, the terminal proceeds to step 407 and performs data communication with the cover through the allocated cover interval interval. Thereafter, the terminal ends the active communication resource determination procedure according to an embodiment of the present invention.

5A is a diagram illustrating a communication procedure with a cover in a terminal according to an embodiment of the present invention.

Referring to FIG. 5A, the terminal detects that data to be transmitted from the cover to the terminal exists, and determines a cover interval in step 503. For example, since the cover according to the embodiment of the present invention communicates only with a predetermined terminal or a terminal within a threshold distance, it is difficult to acquire resources by itself. Accordingly, in an embodiment of the present invention, a case in which data to be transmitted from the cover to the terminal exists is detected, and a cover interval for communication with the cover is determined. For example, the terminal may confirm that there is data to be transmitted from the cover to the terminal by receiving a request signal from the cover during a predetermined time point, when a specific application is executed, a specific event is detected, or during a predetermined period. In addition, as shown in FIGS. 2 to 4, the terminal may determine a section not used by another terminal as a cover interval, or may determine a cover interval based on a passive communication resource determination or an active communication resource determination method. .

In step 505, the terminal transmits a data transmission request signal including the cover interval information to the cover. According to an embodiment of the present invention, a data transmission request signal including cover interval information may be configured as shown in FIG. 5D. For example, the data transmission request signal including the cover interval information includes component identification information (element ID, 530) indicating cover identification information, message length information 532, and the number of allocated cover intervals (Number of allocations). , 534), a time offset indicating the start point of each cover interval (time offset #N, 536-1.536-2), a section of each cover interval (Cover interval duration #N, 538-1, 538-2), and each It may include transmission direction information (Direction info #N, 540-1, 540-2) of the cover interval. Here, the number of cover intervals may indicate the number of divided time intervals when the cover interval interval is not continuous and is composed of divided time intervals. For example, when the cover interval is a 0-5 second interval, a 30-40 second interval, and a 45-50 second interval, it may indicate that there are three cover intervals. In addition, time offset, interval interval, and transmission direction information may be repeatedly included as many as the number of cover intervals. In addition, here, the transmission direction information means information indicating whether a signal is transmitted from the terminal to the cover or a signal is transmitted from the cover to the terminal.

Thereafter, the terminal receives data from the cover through the cover interval interval in step 507. Thereafter, the communication procedure with the cover according to the embodiment of the present invention may be terminated.

5B is a diagram illustrating a communication procedure with a terminal in a cover according to an embodiment of the present invention.

5B, the cover receives a data transmission request signal including cover interval information from a terminal in step 511. According to an embodiment of the present invention, the data transmission request signal may be configured as shown in FIG. 5D. Thereafter, the cover acquires the cover interval information from the data transmission request signal in step 513, and transmits data to the terminal through the cover interval interval in step 515.

5C is a diagram illustrating a communication procedure between a terminal and a cover according to an embodiment of the present invention.

Referring to FIG. 5C, the terminal 100 detects that there is data to be transmitted from the cover to the terminal, and performs channel monitoring to allocate a cover interval in step 520. Thereafter, the terminal 100 acquires the cover interval information through passive resource allocation or active resource allocation in step 522 based on the channel monitoring result. For example, the terminal 100 checks a channel section used for communication between another terminal 102 and another terminal from a packet transmitted by another terminal 102 located nearby, and covers the confirmed interval. Can be assigned to As another example, when a packet is not received from another terminal 102 located nearby, the terminal detects that there is no terminal occupying the channel, and the terminal 100 transmits an RTS or self-CTS signal to occupy the channel section. And, the occupied channel interval may be allocated as a cover interval.

Thereafter, the terminal 100 transmits a data transmission request signal including the cover interval information to the cover 104 in step 524. According to an embodiment of the present invention, a data transmission request signal including cover interval information may be configured as shown in FIG. 5D. Thereafter, the terminal 100 may receive data from the cover through the cover interval interval in step 526 and transmit an ACK message indicating that the data has been successfully received to the cover 104 in step 528.

In FIGS. 5A to 5D described above, the description is made on the assumption that the terminal transmits data from the cover to the terminal, but the above-described embodiment can be applied in the same manner even when the terminal transmits data to the cover. For example, even when the terminal desires to transmit data to the cover, the terminal may monitor a channel to obtain a cover interval, and transmit information on the cover interval to the cover.

In addition, in FIGS. 5A to 5D described above, acquisition of the cover interval through channel monitoring has been described, but a period in which the channel is not monitored and other terminals do not use for communication (eg, IFS, SIFS, DIFS, or Protection time, etc.) may be determined as a cover interval, and information on the determined cover interval may be transmitted to the cover 104.

6A is a diagram illustrating a procedure for changing a communication state of a cover in a terminal according to an embodiment of the present invention.

Referring to FIG. 6A, the terminal checks whether a cover communication stop event is detected in step 601. For example, the cover communication stop event may be generated by a user input. For example, the terminal may detect a user's menu selection, gesture performance, or a touch input to stop communication between the terminal and the cover while playing back an image through the display device included in the cover. As a specific example, the terminal may display a message asking the user whether to stop playing the cover image, or display an icon for controlling (eg, stopping or restarting) the play of the cover image, as shown in FIG. 6D. , An input for stopping playback of the cover image may be received from the user. As another example, the terminal may detect a cover communication stop event based on the remaining battery capacity of the terminal, the remaining battery capacity of the cover, and the presence of data. As a specific example, when the remaining battery capacity of the terminal or the remaining battery capacity of the cover is smaller than a threshold value, the terminal may detect that a cover communication stop event occurs. Here, the terminal may receive information on the remaining amount of the battery from the cover during cover communication, or may have a separate means for detecting the remaining amount of the battery of the cover.

When a cover communication stop event is detected, the terminal proceeds to step 603 to determine a sleep duration and an awake duration. Here, the sleep period is a period in which the communication module of the cover is turned off, and the awake period is a period in which the communication module of the cover is turned on. Depending on the embodiment, the sleep section and the awake section may be determined in advance. Thereafter, in step 605, the terminal transmits information on the sleep period and the awake period to the cover. In this case, a signal for transmitting information on the sleep period and the awake period may be configured as shown in FIG. 6C. For example, a message for transmitting information on a sleep period and an awake period includes component identification information (element ID, 630) indicating cover identification information, length information 632 of the message, and a sleep period (sleeping duration, 634). ) And the awake duration 636.

6B illustrates a procedure for changing a communication state according to control of a terminal in a cover according to an embodiment of the present invention.

Referring to FIG. 6B, the cover receives information on the sleep period and the awake period from the terminal in step 611. For example, the cover may receive a message as shown in FIG. 6C, and obtain information on a sleep period and an awake period from the received message.

The cover checks whether the current time point corresponds to the sleep section in step 613, and if the current time point corresponds to the sleep section, the cover proceeds to step 617 to turn off the power of the communication module included in the cover, and to step 615. Proceed. For example, the cover may determine that a signal is not received from the terminal during the sleep period, and may turn off the power of the communication module to reduce power consumption during the sleep period.

On the other hand, if the current time point does not correspond to the sleep section, the cover proceeds to step 615 to check whether the current time point corresponds to the awake section. If the current time point is not the awake section, the cover may return to step 613 and recheck whether the current time point corresponds to the sleep section.

If the current time point corresponds to the awake period, the cover proceeds to step 619 to turn on the power of the communication module included in the cover. For example, the cover may determine that there is a possibility that a signal may be received from the terminal during the awake period, and may turn on the power of the communication module to detect that a signal is received from the terminal during the awake period.

Thereafter, the cover checks whether a signal is received from the terminal in step 621. If a signal is not received from the terminal, the cover returns to step 613 and performs the following steps again. On the other hand, when a signal is received from the terminal, the cover may communicate with the terminal by maintaining the power-on state of the communication module in step 623. In this case, the cover may acquire cover interval information from the terminal and transmit or receive data through the cover interval interval.

The cover checks whether communication with the terminal is terminated in step 625, and if communication with the terminal is not terminated, returns to step 623 and performs the following steps again, and returns to step 613 when communication with the terminal is terminated. You can perform the following steps again.

7A illustrates a procedure for performing communication with a cover using a predetermined specific beam direction in a terminal according to an embodiment of the present invention.

Referring to FIG. 7A, in step 701, the terminal checks whether the current viewpoint corresponds to a cover interval interval. If the current time point corresponds to the cover interval period, the terminal switches to the non-standard channel access mode in step 703. For example, the terminal may switch to a mode for performing communication with a cover according to a non-standard standard rather than a mode for communicating with another terminal according to the standard standard during the cover interval period.

The terminal may set the antenna and beam directions as a preset cover communication direction in step 705, and transmit and receive data through the allocated cover interval period in step 707 without a channel monitoring procedure. For example, as shown in FIG. 7B, the terminal may set the antenna beam direction of the terminal 100 toward the direction in which the cover 104 is located. As another example, the cover may include an antenna 721 on an inner surface contacting a specific surface of the terminal, as shown in FIG. 7C, and in this case, the terminal adjusts the antenna beam direction in the direction of a specific surface contacting the cover. Can be set. In addition, as shown in Fig. 7c, when the cover includes an antenna 721 on an inner surface contacting a specific surface of the terminal, the rear surface of the cover so that radio waves from the antenna 721 are radiated only to a specific surface of the terminal. Silver can be designed to include components that shield radio waves. Depending on the embodiment, the direction of the antenna beam of the terminal 100 facing the direction in which the cover 104 is located is set in advance in the design stage in consideration of the antenna of the cover, or is set based on information obtained in advance from the cover 104 Can be. In addition, according to an embodiment, the direction of the antenna beam of the cover 104 is not changed, and may be fixed to face a surface in contact with the terminal.

8A shows antenna mounting positions of a terminal and a cover according to an embodiment of the present invention, and FIGS. 8B and 8C illustrate examples of antenna structures of a terminal and a cover according to an embodiment of the present invention.

8A to 8C show an antenna design structure for minimizing the influence of a communication signal between a terminal and a cover on communication of other terminals.

According to an embodiment of the present invention, the antenna 801 of the cover and the antenna 803 of the terminal may be installed at positions as shown in FIG. 8A. That is, the antenna 801 of the cover may be mounted at a position close to the terminal 100, and the antenna 803 of the terminal may be mounted at a position close to the antenna 801 of the cover. In this case, the antenna 803 of the terminal may be a dedicated antenna for cover communication or an antenna used for both cover communication and communication with other terminals.

In addition, the antenna for communication between the cover and the terminal according to an embodiment of the present invention may be composed of a radiator and a shield as shown in FIG. 8B, and may be composed of a radiator and a cavity as shown in FIG. I can. The radiator according to an embodiment of the present invention may be configured with a mindering pattern, and the size of the radiator may be configured such that the maximum length of a polygon or circle including the radiator satisfies Equation 1 below. Here, the polygon or circle including the radiator may include a partial area of the substrate.

Here, D denotes the maximum length of a polygon or circle including a radiator, λ denotes a length of a wavelength according to a frequency, and P denotes a distance between the antenna of the terminal and the antenna of the cover. For example, when the antenna of the terminal and the antenna of the cover are designed as shown in FIG. 8A, P may mean the distance between the terminal and the cover head, and is usually about 20 mm. Equation 1 is to enable the antenna used for communication between the terminal and the cover to operate in a near field region. Here, the mindering pattern means that, like the first radiator and the second radiator of FIGS. 8B and 8C, the conducting wire is bent to have a crank shape.

In addition, the shielding body according to an embodiment of the present invention may be made of a metallic material having a mesh structure, as shown on the right side of FIG. 8B. In this case, the spacing between metallic materials due to the mesh structure may be designed to be smaller than λ/8. This is to shield radio waves radiated from the radiator. As shown in FIG. 8B, an antenna composed of a radiator and a shield according to an embodiment of the present invention may include a substrate. For example, as in the side view of FIG. 8B, a radiator may be designed on one side of the substrate, and a shield may be designed on the other side of the substrate.

In addition, the cavity according to the exemplary embodiment of the present invention may be formed of a conductive material as shown on the right side of FIG. 8C. In this case, the height of the cavity may be designed to be smaller than λ/4. In addition, as shown in FIG. 8C, according to an exemplary embodiment of the present invention, an antenna including a radiator and a cavity may include a substrate. For example, as in the side view of FIG. 8C, one side of the substrate may be designed with a radiator, and the other three sides may be shielded with a cavity.

9 is a block diagram of a terminal according to an embodiment of the present invention.

Referring to FIG. 9, the terminal may include a control unit 900, a communication unit 910, an antenna 920, a storage unit 930, an input unit 940, and an output unit 950.

The controller 900 controls and processes overall functions for the operation of the terminal. For example, the controller 900 controls a function for performing communication with another unspecified terminal located in the vicinity, and controls and processes a function for performing communication with a specific device such as a cover. For example, the controller 900 includes the cover communication controller 902 to determine a cover interval for communicating with the cover, and controls and processes a function for performing communication with the cover based on the cover interval. The cover communication control unit 902 may determine a section not used by other terminals (e.g., IFS, SIFS, DIFS, or guard time) as a cover interval according to the standard standard, and cover the channel section occupied by other terminals. Can be determined by In addition, the cover communication control unit 902 may occupy a channel section through signal transmission for channel occupancy, and may determine the occupied channel section as a cover interval. In addition, the cover communication control unit 902 can control and process a function for transmitting information about the cover interval to the cover, determine the sleep period and the awake period of the cover to control the communication state of the cover, and It is possible to control and process the function for transmitting information on the sleep period and the awake period to the cover. In addition, the cover communication control unit 902 controls and processes a function for adjusting the antenna 920 and/or the transmission/reception beam direction for communication with the cover.

The communication unit 910 communicates with other terminals, base stations, or covers located in the vicinity under the control of the controller 900. For example, the communication unit 910 may be configured to include one communication modem. In particular, the communication unit 910 may transmit and receive data to and from the cover at a preset low power during the cover interval under the control of the controller 900. In addition, the communication unit 910 may adjust the direction of the antenna 920 and/or the direction of the transmission/reception beam in order to communicate with the cover under the control of the controller 900. According to an embodiment, the antenna 920 may be a beam antenna or an array antenna capable of forming a beam in a specific beam direction. As another example, the antenna 920 may be composed of a radiator and a shield as shown in FIG. 8B, or may be composed of a radiator and a cavity as shown in FIG. 8C.

The storage unit 930 stores various data and programs for overall operation of the terminal. According to an embodiment of the present invention, the storage unit 930 may store information on a cover interval, and may store information on a sleep period and an awake period. In addition, the storage unit 930 may include information on power used to communicate with the cover.

The input unit 940 transmits a command or data generated by a user's selection or gesture to the control unit 900. For example, the input unit 940 may include at least one of at least one physical key button, a physical keypad, a touch sensor, a proximity sensor, an acceleration sensor, a microphone, and a mouse.

The output unit 950 may output image, video, or audio data to a user. For example, the output unit 950 may include a display device that displays an image or image data, and a speaker that outputs audio data. The display device according to an exemplary embodiment of the present invention may display a graphic element indicating communication with the cover or a graphic element indicating interruption of communication with the cover.

10 illustrates a block configuration of a cover according to an embodiment of the present invention.

Referring to FIG. 10, the cover may include a control unit 1000, a communication unit 1010, an antenna 1020, a storage unit 1030, an input unit 1040, and an output unit 1050.

The controller 1000 controls and processes overall functions for the operation of the cover. For example, the controller 1000 controls and processes a function for outputting data received from the terminal through the output unit 1050 or storing the data in the storage unit 1030. For example, the terminal communication controller 1002 receives cover interval information for communication with the terminal from the terminal, and controls and processes a function for performing communication with the terminal based on the cover interval. The terminal communication control unit 1002 receives information on the sleep and awake periods of the cover from the terminal, turns off the power of the communication module included in the communication unit 1010 during the sleep period, and powers the communication module during the awake period. Controls the function to turn on.

The communication unit 1010 communicates with a specific terminal set in advance under the control of the controller 1000. For example, the communication unit 1010 may transmit/receive data to and from a specific terminal at a preset low power during the cover interval under the control of the controller 1000.

The antenna 1020 may be a beam antenna or an array antenna capable of forming a beam in a specific beam direction. As another example, the antenna 1020 may be composed of a radiator and a shield as shown in FIG. 8B, or may be composed of a radiator and a cavity as illustrated in FIG. 8C.

The storage unit 1030 stores various data and programs for communication with a terminal. According to an embodiment of the present invention, the storage unit 1030 may store information on a cover interval, and may store information on a sleep period and an awake period. In addition, the storage unit 1030 may include information on power used to communicate with the cover. Also, the storage unit 1030 may store data received from the terminal.

The input unit 1040 transmits a command or data generated by a user's selection or gesture to the control unit 1000. For example, the input unit 940 may include at least one of at least one physical key button, a physical keypad, a touch sensor, a proximity sensor, an acceleration sensor, a microphone, and a mouse.

The output unit 1050 may output image, video, or audio data to a user. For example, the output unit 1050 may include a display device that displays an image or image data, or a speaker that outputs audio data. The display apparatus according to an embodiment of the present invention may display a graphic element corresponding to data received from a terminal.

As described above, although the present invention has been described by limited embodiments and drawings, the present invention is not limited to the above-described embodiments, and various modifications and variations are made from these descriptions to those of ordinary skill in the field to which the present invention belongs. It is possible.

Operations according to an embodiment of the present invention may be implemented by a single control unit. In this case, program instructions for performing operations implemented by various computers may be recorded in a computer-readable medium. The computer-determinable medium may include a program command, a data file, a data structure, or the like alone or in combination. The program instructions may be specially designed and configured for the present invention, or may be known and usable to those skilled in the art. Examples of computer-readable recording media include hard disks, magnetic media such as floppy disks and magnetic tapes, optical recording media such as CD-ROMs or DVDs, magnetic-optical media such as floptical disks, and ROMs. Hardware devices specially configured to store and execute program instructions, such as, RAM, flash memory, and the like. Examples of the program instructions include not only machine language codes such as those produced by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. When all or part of the base station or relay described in the present invention is implemented as a computer program, a computer-readable recording medium storing the computer program is also included in the present invention. Therefore, the scope of the present invention is limited to the described embodiments and should not be defined, and should be defined by the claims and equivalents as well as the claims to be described later.

Claims (20)

In the method of operating an electronic device,
A process of wirelessly transmitting graphic data for display on a first display of the cover device to the cover device while one side of the electronic device is in contact with the side of the cover device,
Receiving a user input on a second display of the electronic device while the one surface of the electronic device is in contact with the one surface of the cover device; and
And stopping display of graphic data on the first display of the cover device based on the user input,
The process of stopping display of the graphic data on the first display of the cover device includes a process of disconnecting from the cover device.
The method according to claim 1,
The user input includes a first user input,
Receiving a second user input;
And wirelessly connecting with the cover device to transmit the graphic data based on the second user input.
delete The method according to claim 1,
Further comprising the process of displaying an icon for controlling display on the first display of the cover device,
The user input is detected through the icon.
The method according to claim 1,
The process of confirming that the remaining amount of the battery of at least one of the electronic device or the cover device is less than a threshold value,
And transmitting information for controlling the cover device to the cover device to stop displaying the cover device on the first display.
The method according to claim 1,
The cover device is located within a specific distance from the electronic device,
The specific distance is shorter than a distance between the electronic device and at least one other device.
The method according to claim 1,
The method further comprising the step of displaying a message asking a user whether to stop displaying the cover device.
The method according to claim 1,
The method further comprising transmitting a signal for powering on or off the communication module of the cover device to the cover device.
In the operating method of the cover (cover) device,
A process of wirelessly receiving graphic data for display on a first display of the cover device from the electronic device while one surface of the electronic device is in contact with the surface of the cover device; and
A process of performing a display operation based on the graphic data while one surface of the electronic device is in contact with the surface of the cover device, and
And stopping the display of the graphic data based on a received user input on a second display of the electronic device in a state in which one surface of the electronic device is in contact with the surface of the cover device,
The process of stopping the display of the graphic data includes a process of disconnecting from the electronic device.
delete In the electronic device,
Transceiver and,
And at least one processor connected to the transceiver,
The at least one processor,
In a state in which one surface of the electronic device is in contact with the surface of the cover device, graphic data for display on a first display of the cover device is wirelessly transmitted to the cover device,
In a state in which one surface of the electronic device is in contact with the surface of the cover device, a user input on a second display of the electronic device is received, and
Controlling to stop displaying graphic data on the first display of the cover device based on the user input,
In the process of stopping the display of the graphic data on the first display of the cover device, the electronic device controls to disconnect from the cover device.
The method of claim 11,
The user input includes a first user input,
The at least one processor,
Receive a second user input,
An electronic device that wirelessly connects with the cover device to transmit the graphic data based on the second user input.
delete The method of claim 11,
The second display further comprises displaying an icon for controlling display on the first display of the cover device,
The user input is detected through the icon.
The method of claim 11,
The at least one processor,
Confirming that the remaining amount of the battery of at least one of the electronic device or the cover device is less than a threshold value,
An electronic device controlling to transmit information for controlling the cover device to the cover device to stop displaying of the cover device on the first display.
The method of claim 11,
The cover device is located within a specific distance from the electronic device,
The specific distance is shorter than a distance between the electronic device and at least one other device.
The method of claim 11,
The at least one processor controls to display on the second display a message asking a user whether to stop displaying the cover device.
The method of claim 11,
The at least one processor controls to transmit a signal for powering on or off the communication module of the cover device to the cover device.
The method of claim 11,
The antenna of the electronic device,
A substrate (substraste),
At least one radiator disposed on one side of the substrate and configured to emit a signal for communication with the cover device,
An electronic device comprising a shield and a cavity in contact with the other side of the substrate and configured to block the signal from interfering with communication between other devices.
The method of claim 11,
The cover device,
An antenna disposed on an inner surface of the cover device and configured to emit a signal for communication with the electronic device, the inner surface contacting the electronic device,
An electronic device comprising a shield configured to block the signal from interfering with communication with at least one other device.

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