JP2008228098A - Portable telephone device, communication control method for portable telephone device, and computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To receive a call from a public portable telephone preferentially in a portable telephone device provided with a wireless LAN function using a frequency band close to a portable telephone. <P>SOLUTION: A transmission-prohibited time Tpmax+Tp generated by adding a transmission time Tpmax, equivalent to a maximum transmission packet length, to the head of an intermittent reception time Tp of a portable telephone. A packet is not transmitted during the transmission-prohibited time while it is transmitted not during the transmission-prohibited time. When it is possible to receive a radio wave stronger than a transmission wave, transmitted from a wireless LAN part, from a portable telephone base station, a packet is transmitted irrespective of the transmission-prohibited time so as to keep throughput of the wireless LAN high. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cellular phone device having a wireless LAN function, a communication control method for the cellular phone device, and a computer program, and more particularly to a cellular phone device having a wireless LAN function using a frequency band close to the cellular phone. The present invention relates to a communication control method for a mobile phone device and a computer program.

  More particularly, the present invention relates to a mobile phone device having a wireless LAN function and giving priority to incoming calls of a public mobile phone, a communication control method for the mobile phone device, and a computer program. The present invention relates to a mobile phone device that receives a mobile phone even in an environment where the received electric field strength is low, a communication control method for the mobile phone device, and a computer program.

  Mobile phones are rapidly spreading throughout the world. At present, digital mobile phones conforming to the IMT (International Mobile Telecommunication-2000) standard established by the International Telecommunications Union (ITU), that is, the third generation mobile phones (3G) are the mainstream, and are common throughout the world. Uses a UIM (User Identity Module) card at a communication frequency (2 GHz band only) to enable international roaming without changing the telephone number, and various services using multimedia such as high-speed data communication and videophone Is possible.

  On the other hand, a wireless network has attracted attention as a system that frees wiring from the conventional wired communication system. For example, wireless LAN (Local Area Network) enables flexible Internet connection, not only replaces existing wired LANs laid in offices and homes, but also public places such as hotels, airport lounges, stations, and cafes. But it can provide internet connection. Wireless LANs have become widespread along with higher speed, smaller size, and lower cost, and not only for information devices such as personal computers (PCs) but also for CE (Consumer Electronics) devices such as digital cameras and music players. It is becoming common to install a wireless LAN function. Recently, an increasing number of mobile phones are equipped with a wireless LAN function.

  For example, a wireless communication system using both a wireless LAN and a mobile phone network has been proposed (see, for example, Patent Document 1). The system communicates with the base station between the base station and the portable terminal, and has a lower output than the first high frequency used for communication with the base station and can be distinguished from the first high frequency. In this configuration, a relay station capable of communicating at the second high frequency is interposed. The relay station is installed in a moving body such as a train or in a building, and when using a mobile phone in an area where the relay station can communicate such as in a moving body or building, it communicates with the relay station rather than with the base station. Priority is given to communication at a relatively small high-frequency output. In addition, when the mobile phone goes out of an area where the relay station can communicate, such as a mobile object or a building, the mobile phone communicates with the base station at a high output high frequency.

  The main purpose of mounting a wireless LAN function on a cellular phone is to use it together with an IP (Internet Protocol) phone in a wireless LAN environment such as an office, or to transmit a large amount of data such as a moving image. In the former usage mode, the cellular phone function and the wireless LAN function need only operate alternatively, but considering that the user moves and goes out of the communicable area of the base station, the cellular phone function It is desirable to wait. In the latter case, data communication by wireless LAN is generally performed while waiting on a mobile phone.

  As a wireless LAN standard, IEEE (The Institute of Electrical and Engineering Engineers) 802.11b using a global radio frequency body called an ISM (Industry Science Medical) band of 2.4 GHz and IEEE80. . On the other hand, the above-mentioned third generation mobile phone uses a 2 GHz band close to the ISM band, and thus is in a state where interference is likely to occur.

  When the first priority is given to incoming calls from public mobile phones, it is a serious problem that incoming calls from mobile phones cannot be made while using a wireless LAN. Of course, a cellular phone is generally equipped with a filter that cuts off frequencies other than the frequency band of the cellular phone used. However, when the mobile phone is in a weak electric field, the level of the radio wave transmitted from the same housing and the level of the radio wave from the base station may be reversed, which may make it impossible to receive a call.

  FIG. 6 shows a functional configuration of a mobile phone with a wireless LAN function. In the figure, reference numeral 100 is a cellular phone, reference numeral 101 is a 2 GHz band antenna, reference numeral 102 is a radio unit for a cellular phone function including a transmission unit and a reception unit, and reference numeral 103 performs modulation / demodulation and communication protocol processing. A baseband processing unit, reference numeral 104 is an application unit for performing various application processes of the mobile phone, reference numeral 105 is a display unit using liquid crystal, and reference numeral 106 is an operation unit. On the other hand, reference numeral 107 is a 2.4 GHz band wireless LAN antenna, and reference numeral 108 is a 2.4 GHz band wireless LAN section.

  Here, the antenna 101 and the wireless unit 102, and the antenna 107 and the wireless LAN unit 108 are accommodated in one housing. In order to reduce mutual interference, the antenna 101 and the antenna 107 are spaced apart to some extent. However, since the use frequency is close, in an environment where the reception electric field strength on the mobile phone 100 side is low, the transmission wave from the wireless LAN unit 108 may be received more strongly by the wireless unit 102. This worsens the incoming probability of the mobile phone.

  FIG. 7 shows a communication timing chart of a mobile phone and a wireless LAN in a mobile phone with a wireless LAN function.

  In the figure, reference numeral 200 is a notification signal from a mobile phone base station. P1, P2, P3... Mean a paging channel group, and each mobile phone belongs to one of the groups. In the illustrated example, P2 indicated by reference numeral 201 is a paging channel for standby. In each paging channel P1, P2, P3..., The same signal is transmitted at intervals of the period Tb. Therefore, it is not necessary for the mobile phone to always wait for the paging channel of the group to which the mobile phone belongs. As indicated by reference numeral 202 in the figure, the power consumption can be reduced by intermittently performing the receiving operation.

  On the other hand, when the wireless LAN unit 108 operates while waiting for a mobile phone, it is asynchronous with the intermittent reception operation of the paging channel in the wireless unit 102, and in the illustrated example, packets indicated by reference numerals 203 to 206 are transmitted. . Among these, the transmission timing of the packets 203 and 206 overlaps with the timing of performing the intermittent reception operation of the paging channel, so that there is a possibility that the wireless LAN interferes with the mobile phone.

JP 2002-141857 A

  An object of the present invention is to provide an excellent mobile phone device, a communication control method for the mobile phone device, and a computer program that have a wireless LAN function using a frequency band close to the mobile phone.

  A further object of the present invention is to provide an excellent mobile phone device and a communication of a mobile phone device that have a wireless LAN function and give priority to incoming calls of public mobile phones and are not easily disturbed by the wireless LAN during standby. A control method and a computer program are provided.

  A further object of the present invention is to provide an excellent mobile phone device, a communication control method for the mobile phone device, and a computer program that can suitably receive a mobile phone even in an environment where the reception electric field strength on the mobile phone side is low. It is to provide.

  The present invention has been made in view of the above problems, and a first aspect thereof is a mobile phone function unit that performs transmission / reception operations in a mobile phone, a wireless LAN function unit that performs packet transmission / reception operations in a wireless LAN, A transmission prohibition section generating section for generating a transmission prohibition section for avoiding disturbing a standby operation of a mobile phone, wherein the wireless LAN function section does not perform a packet transmission operation in the transmission prohibition section Mobile phone device.

  According to the wireless LAN, not only the existing wired LAN can be replaced, but also a simple Internet connection means can be provided. Recently, an increasing number of mobile phones are equipped with a wireless LAN function.

  However, IEEE802.11b. Whereas g uses the 2.4 GHz ISM band, the third-generation mobile phone uses the 2 GHz band that is close to this, so interference is likely to occur between each other. When the first priority is given to incoming calls from public mobile phones, it is a serious problem that incoming calls from mobile phones cannot be made while using a wireless LAN. In particular, when the mobile phone is in a weak electric field, the radio LAN radio wave transmitted from the same housing exceeds the radio wave level from the base station, and the incoming call probability is significantly reduced.

  Therefore, in the mobile phone device according to the present invention, the transmission prohibition section generator generates a transmission prohibition section at a timing according to the intermittent standby operation of the notification signal in the mobile phone function section, and the wireless LAN function section Packet transmission prohibition control is performed in this transmission prohibition section. That is, a transmission packet that is not included in the transmission prohibited section can be transmitted as it is, but if the transmission timing overlaps with the transmission prohibited section, the wireless LAN function unit does not transmit the packet, and instead starts from the transmission prohibited section. A packet is transmitted at the timing deviated. Accordingly, during the period in which the notification signal from the mobile phone base station is intermittently received, the wireless LAN function unit suppresses packet transmission, so that the incoming call probability in the mobile phone can be kept high.

  Here, a notification signal is transmitted from the mobile phone base station in a paging channel provided at an interval of a predetermined period Tb, and one of the mobile phone function units waits intermittently in the paging channel of the group to which the mobile phone base station belongs. When performing the operation, the transmission prohibition section generating unit prohibits transmission consisting of a time Tpmax + Tp obtained by adding a transmission section Tpmax corresponding to the maximum transmission packet length of the wireless LAN to the head of the intermittent standby operation time Tp in the mobile phone function unit. A section may be generated. Alternatively, the wireless LAN function unit does not generate a transmission prohibition interval based on the maximum transmission packet length in advance, but considers the actual packet length each time a packet is transmitted, and whether or not the transmission packet overlaps the intermittent reception interval. May be determined each time.

  As described above, when the wireless LAN transmission prohibition section is provided, there is a concern that the throughput of the wireless LAN is reduced. For example, when the maximum transmission packet length is long in a low-speed wireless LAN, the reduction in throughput is a concern. In such a case, it may be determined whether to prohibit transmission according to the received electric field strength of the mobile phone.

  When a radio wave stronger than the transmission wave from the wireless LAN unit can be received from the mobile phone base station, the incoming probability of the mobile phone can be kept sufficiently high without performing the transmission prohibition control of the wireless LAN unit. Therefore, when the reception electric field strength of the mobile phone exceeds a predetermined value, the transmission prohibition section generator does not generate a transmission prohibition section, or the wireless LAN function section ignores the transmission prohibition section and performs a packet transmission operation. The throughput of the wireless LAN can be kept high.

According to a second aspect of the present invention, there is provided a mobile phone function unit that performs transmission / reception operations in a mobile phone and a communication operation of a mobile phone device that includes a wireless LAN function unit that performs packet transmission / reception operations in a wireless LAN. A computer program written in a computer-readable format to execute processing on a computer,
A transmission prohibition section generation procedure for generating a transmission prohibition section to avoid disturbing the standby operation of the mobile phone;
A measurement procedure for measuring the received electric field strength of the mobile phone in the mobile phone function unit;
A packet transmission prohibition control procedure for performing packet transmission prohibition control in the wireless LAN function unit in the transmission prohibition section according to the reception electric field strength of the mobile phone;
Is a computer program characterized in that

  The computer program according to the second aspect of the present invention defines a computer program described in a computer-readable format so as to realize predetermined processing on the computer. In other words, by installing the computer program according to the second aspect of the present invention in the computer, a cooperative action is exhibited on the computer, and the same as the mobile phone device according to the first aspect of the present invention. An effect can be obtained.

  According to the present invention, it is possible to provide an excellent mobile phone device, a communication control method for a mobile phone device, and a computer program that have a wireless LAN function using a frequency band close to the mobile phone.

  In addition, according to the present invention, an excellent mobile phone device and mobile phone device that have a wireless LAN function and give priority to incoming calls from public mobile phones and are less susceptible to interference from the wireless LAN during standby. A communication control method and a computer program can be provided.

  In addition, according to the present invention, an excellent mobile phone device, a communication control method for the mobile phone device, and a computer program that can suitably receive a mobile phone even in an environment where the received electric field strength on the mobile phone side is low are provided. Can be provided.

  Although the mobile phone according to the present invention has a wireless LAN function, even when the wireless LAN is in use, the mobile phone standby operation is not disturbed and the incoming probability of the mobile phone can be increased.

  Other objects, features, and advantages of the present invention will become apparent from more detailed description based on embodiments of the present invention described later and the accompanying drawings.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 schematically shows a functional configuration of a mobile phone with a wireless LAN function according to an embodiment of the present invention.

  In the figure, reference number 100 is a mobile phone, reference number 101 is a 2 GHz band antenna, reference number 102 is a radio unit comprising a transmission unit and a reception unit, and reference number 103 is a baseband processing unit that performs modulation / demodulation and communication protocol processing. is there. The antenna 101, the radio unit 102, and the baseband processing unit 103 realize a communication operation in the mobile phone function. Reference numeral 104 is an application section for performing various application processes of the mobile phone, reference numeral 105 is a display section using liquid crystal, and reference numeral 106 is an operation section.

  A broadcast signal is transmitted from the mobile phone base station through a paging channel provided at intervals of a predetermined period Tb. In this embodiment, it is assumed that the mobile phone intermittently receives the paging channel of the group to which it belongs.

  On the other hand, reference numeral 107 is a 2.4 GHz band wireless LAN antenna, and reference numeral 108 is a 2.4 GHz band wireless LAN section. The antenna 101 and the wireless unit 102, and the antenna 107 and the wireless LAN unit 108 are accommodated in one housing. In order to reduce mutual interference, the antenna 101 and the antenna 107 are spaced apart to some extent. However, when the mobile phone is in a weak electric field, the level of the wireless LAN radio wave transmitted from the same housing and the radio wave level from the base station may be reversed, and there is a possibility that the incoming call cannot be made.

  In the mobile phone 100 shown in the figure, incoming calls from public mobile phones are considered first priority. The transmission prohibition section generating unit indicated by reference numeral 302 generates a transmission prohibition section in the wireless LAN unit 108 in order to avoid disturbing the standby operation of the mobile phone by the packet transmission operation in the wireless LAN unit 108. Specifically, the baseband processing unit 103 of the mobile phone function notifies the transmission prohibited section generation unit 302 of the timing (RX_ON) when the reception operation of the wireless unit 102 is turned on. The mobile phone intermittently receives the paging channel of the group to which the mobile phone belongs, and the RX_ON signal is supplied to the transmission prohibited section generating unit 302 in synchronization with this. Then, the transmission prohibition section generator 302 generates a wireless LAN transmission prohibition section (TX_INHIB) using this RX_ON signal, and notifies the wireless LAN section 108 via the signal line 303. The wireless LAN unit 108 performs packet transmission prohibition control according to the active / idle state of the TX_INHIB signal.

  FIG. 2 shows a communication timing chart of the mobile phone and the wireless LAN in the mobile phone with the wireless LAN function shown in FIG.

  In the figure, reference numeral 200 is a notification signal from a mobile phone base station. P1, P2, P3... Mean a paging channel group, and each mobile phone belongs to one of the groups. In the illustrated example, P2 indicated by reference numeral 201 is a paging channel for standby. In each paging channel P1, P2, P3..., The same signal is transmitted at intervals of the period Tb. Therefore, it is not necessary for the mobile phone to always wait for the paging channel of the group to which the mobile phone belongs. As indicated by reference numeral 202 in the figure, the power consumption can be reduced by intermittently performing the receiving operation (same as above).

  If the time for intermittently receiving the broadcast signal from the mobile phone base station through the corresponding paging channel is Tp, and the transmission time Tpmax is equivalent to the maximum transmission packet length in the wireless LAN, the transmission prohibited section is at the beginning of the intermittent reception time Tp. Tpmax + Tp is obtained by adding a transmission time Tpmax corresponding to the maximum transmission packet length.

  The transmission prohibition section generator 302 generates a transmission prohibition section 303 in which the end of the transmission time Tpmax corresponding to the maximum transmission packet length is aligned with the beginning of the intermittent reception time Tp indicated by the reference number 202. Therefore, even if the wireless LAN unit 108 starts transmitting a packet having the maximum transmission packet length immediately before the transmission prohibited section 303, the packet transmission is completed before the intermittent reception time Tp starts. The standby operation in the unit 102 is not interfered.

  Here, the maximum transmission packet length is defined by a wireless LAN standard such as IEEE 802.11, but the transmission time varies depending on the transmission mode MOD (modulation method and data rate) used in the wireless LAN unit 108. In the present embodiment, the wireless LAN unit 108 notifies the transmission prohibited section generation unit 302 of the modulation mode MOD to be transmitted via the signal line 305. Therefore, the transmission prohibited section generation unit 302 can adaptively switch the transmission time Tpmax according to the modulation mode MOD.

  For example, in the case of IEEE802.11g, the modulation mode MOD means (Orthogonal Frequency Division Multiplexing) modulation scheme, and BPSK (Biphase ShiftQurQuadQ), QPSK (QuadratureQR). ), There are 4 types of 64QAM.

  In the example shown in FIG. 2, the transmission packets indicated by reference numerals 401 and 402 are not included in the transmission prohibited section, and can be transmitted as they are. On the other hand, the transmission packet indicated by reference numeral 403 is not transmitted because the transmission timing t1 thereof exists in the transmission prohibited section 303, and is instead transmitted as a transmission packet 404 at a timing outside the transmission prohibited section 303. The

  In the above, the transmission prohibition section generation unit 302 generates a transmission prohibition section based on the maximum transmission packet length in advance, but the transmission packet overlaps the intermittent reception section 202 in consideration of the actual packet length each time a packet is transmitted. It may be determined whether or not each time.

  When the wireless LAN transmission prohibition section is provided, there is a concern that the throughput of the wireless LAN is reduced. The paging channel intermittent reception cycle Tb is 1 second, the intermittent reception interval 202 is 1 millisecond, and the packet transmission time corresponding to the maximum transmission packet length is 3 milliseconds (considering a packet of 1500 times at a transmission rate of 6 Mbps, overhead is reduced. 50%), the transmission prohibition period is 1 millisecond + 3 milliseconds = 4 milliseconds, and only 4 milliseconds of one second is the transmission prohibition period, so it can be said that there is almost no decrease in throughput. .

  Nevertheless, if the maximum transmission packet length is long in a low-speed wireless LAN and the reduction in throughput is a concern, it may be determined whether or not to prohibit transmission according to the reception field strength of the mobile phone. When the radio field 101, the baseband processing unit 103, etc. measure the received electric field strength on the mobile phone side and receive a radio wave stronger than the transmit wave from the radio LAN unit 108 from the mobile phone base station, the transmission of the radio LAN unit 108 Even if prohibition control is not performed, the incoming probability of a mobile phone can be kept sufficiently high. Therefore, when the reception electric field strength of the mobile phone exceeds a predetermined value, the transmission prohibited section generation unit 302 does not generate a transmission prohibited section, or the wireless LAN function unit 108 performs a packet transmission operation ignoring the transmission prohibited section. As a result, the throughput of the wireless LAN can be kept high.

  FIG. 3 shows another example of a communication timing chart of the mobile phone and the wireless LAN in the mobile phone with the wireless LAN function shown in FIG.

  Here, it is assumed that the wireless LAN unit 108 determines whether or not to provide a transmission prohibited section according to the received electric field strength in the mobile phone. As the received electric field strength, for example, an RSSI (Receiving Signal Strength Indicator) value used for AGC feedback or the like can be applied. Therefore, detailed description of the measurement method and the like is omitted in this specification. Further, the received electric field strength is represented by four levels from 0 to 3. As indicated by reference numeral 501 in the figure, the number of bars (0 to 3) appearing next to the antenna mark that is always displayed on the display unit 105 of the mobile phone is used. When the electric field strength is large and level 0 is cut off, it indicates that the mobile phone is out of the ringing range. In the following description, it is assumed that when the received electric field strength of the mobile phone is level 2 or higher, the wireless LAN unit 108 is allowed to transmit packets ignoring the transmission prohibited section.

  In each paging channel P1, P2, P3..., A notification signal is transmitted from the mobile phone base station at intervals of a period Tb. A mobile phone intermittently receives the paging channel of the group to which it belongs. The transmission prohibited section is Tpmax + Tp obtained by adding the transmission time Tpmax corresponding to the maximum transmission packet length to the beginning of the intermittent reception time Tp, and the transmission prohibited section generating unit 302 is an intermittent whose reference number 202 indicates the end of Tpmax. A transmission prohibition section 303 that is aligned with the beginning of the reception time Tp is generated (same as above).

  In the illustrated example, the reception electric field strength 304 of the mobile phone is level 1 until time t2, and packet transmission interferes with the notification signal from the mobile phone base station, and the mobile phone reception probability is significantly reduced. . That is, since the wireless LAN unit 108 cannot ignore the transmission prohibited section, if a transmission packet generated at a timing before time t2 is included in the transmission prohibited section 303, transmission is not performed, and instead a transmission prohibited section The packet is transmitted as a transmission packet 401 at a timing deviating from 303.

  In the illustrated example, the reception electric field strength 304 of the mobile phone is improved to level 2 after time t2. When the reception electric field strength of the cellular phone is level 2 or higher, radio waves stronger than the transmission wave from the wireless LAN unit 108 can be received from the cellular phone base station, and even if the transmission prohibition control of the wireless LAN unit 108 is not performed, The incoming call probability can be kept sufficiently high. That is, after time t2, the wireless LAN unit 108 is allowed to transmit a packet ignoring the transmission prohibited section. Therefore, the transmission packet 402 generated at a timing deviating from the transmission prohibited section 303 is, of course, the transmission prohibited section 303. The transmission packet 500 generated at the timing t1 that overlaps can be transmitted as it is.

  In this way, when the reception quality from the mobile phone base station is high, the wireless LAN transmission prohibition control is not performed, and a decrease in throughput in the wireless LAN can be avoided.

  FIG. 4 shows, in the form of a flowchart, a processing procedure for performing wireless LAN transmission prohibition control in accordance with the intermittent reception operation of the mobile phone as shown in FIG.

  First, the wireless LAN unit 108 notifies the transmission prohibition section generation unit 302 of the modulation scheme of the next packet to be sent (step S1). On the other hand, the transmission prohibition section generator 302 sets a transmission prohibition section (TX INHIB) based on the information.

  Here, a packet transmission request is waited (step S2). If there is a transmission request, the process proceeds to the next step S3.

  If there is a transmission request from the upper layer (Yes in step S2), then it is checked whether the TX INHIB signal output from the transmission prohibition section generation unit 302 is in an active state, that is, whether it is currently a transmission prohibition section. (Step S3).

  If the TX_INHIB signal is active (prohibited section) (Yes in step S3), packet transmission is waited to avoid interference of the notification signal from the mobile phone base station.

  On the other hand, if the TX_INHIB signal is not active (No in step S3), the process proceeds to the next step S4 to perform packet transmission (step S4).

  FIG. 5 is a flowchart showing a processing procedure for performing wireless LAN transmission prohibition control in accordance with the reception quality of the mobile phone as shown in FIG.

  First, the wireless LAN unit 108 notifies the transmission prohibition section generation unit 302 of the modulation scheme of the next packet to be transmitted (step S11). On the other hand, the transmission prohibition section generator 302 sets a transmission prohibition section (TX INHIB) based on the information.

  Here, the packet transmission request is waited (step S12). If there is a transmission request, the process proceeds to the next step S13.

  If there is a transmission request from an upper layer (Yes in step S12), it is checked whether the RSSI value of the radio wave received from the current mobile phone base station is equal to or greater than a threshold value (step S13).

  If the RSSI value of the radio wave received from the mobile phone base station is equal to or greater than the threshold (Yes in step S13), the mobile phone reception probability can be kept sufficiently high without performing the transmission prohibition control of the wireless LAN unit 108. Then, the packet transmission is performed as it is without checking whether it is the transmission prohibited section (step S15).

  On the other hand, when the RSSI value of the radio wave received from the mobile phone base station falls below the threshold (No in step S13), a notification signal from the mobile phone base station indicates that the transmission packet of the wireless LAN unit 108 overlaps the intermittent reception period of the mobile phone. Will significantly reduce the incoming probability of the mobile phone. Therefore, in this case, it is checked whether the TX INHIB signal output from the transmission prohibition section generation unit 302 is in an active state, that is, whether it is currently a transmission prohibition section (step S14).

  If the TX_INHIB signal is active (prohibited section) (Yes in step S14), packet transmission is waited to avoid interference of the notification signal from the mobile phone base station.

  On the other hand, if the TX_INHIB signal is not active (No in step S14), the process proceeds to the next step S4 to perform packet transmission (step S15).

  When performing contention access by the CSMA (Carrier Sense Multiple Access) method in IEEE 802.11 networking, collision is avoided by waiting for transmission for a random back-off time after detecting the idle state of the transmission path. It has become. However, it should be understood that the backoff is ignored in the processing procedures shown in FIGS. 4 and 5 for the sake of simplicity.

  The present invention has been described in detail above with reference to specific embodiments. However, it is obvious that those skilled in the art can make modifications and substitutions of the embodiment without departing from the gist of the present invention.

  In the present specification, the case where the mobile phone performs a standby operation for the paging channel has been described as an example, but the gist of the present invention is not limited to this. The present invention can be similarly applied even when the mobile phone is communicating.

  In short, the present invention has been disclosed in the form of exemplification, and the description of the present specification should not be interpreted in a limited manner. In order to determine the gist of the present invention, the claims should be taken into consideration.

FIG. 1 is a diagram schematically showing a functional configuration of a mobile phone with a wireless LAN function according to an embodiment of the present invention. FIG. 2 is a communication timing chart of the mobile phone and the wireless LAN in the mobile phone with the wireless LAN function shown in FIG. FIG. 3 is a diagram showing another example of a communication timing chart of the mobile phone and the wireless LAN in the mobile phone with the wireless LAN function shown in FIG. FIG. 4 is a flowchart showing a processing procedure for performing wireless LAN transmission prohibition control in accordance with the intermittent reception operation of the mobile phone as shown in FIG. FIG. 5 is a flowchart showing a processing procedure for performing wireless LAN transmission prohibition control in accordance with the reception quality of the mobile phone as shown in FIG. FIG. 6 is a diagram showing a functional configuration of a mobile phone with a wireless LAN function. FIG. 7 is a diagram showing a communication timing chart of the mobile phone and the wireless LAN in the mobile phone with the wireless LAN function.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Mobile phone 101 ... Antenna 102 ... Radio | wireless part 103 ... Baseband process part 104 ... Application part 105 ... Display part 106 ... Operation part 107 ... Wireless LAN antenna 108 ... Wireless LAN part 302 ... Transmission prohibition area production | generation part

Claims (9)

A mobile phone function unit for performing transmission / reception operations on the mobile phone;
A wireless LAN function unit for performing packet transmission / reception operations in a wireless LAN;
A transmission prohibition section generating unit that generates a transmission prohibition section for avoiding disturbing the standby operation of the mobile phone,
The wireless LAN function unit does not perform a packet transmission operation in the transmission prohibited section.
A cellular phone device characterized by that. A broadcast signal is transmitted from the mobile phone base station in a paging channel provided at an interval of a predetermined period Tb,
The mobile phone function unit performs a standby operation intermittently in the paging channel of the group to which the mobile phone belongs,
The transmission prohibition section generating unit generates a transmission prohibition section at a timing according to an intermittent standby operation of a notification signal in the mobile phone function unit.
The mobile phone device according to claim 1. The transmission prohibition section generating unit generates a transmission prohibition section having a time of Tpmax + Tp, which is obtained by adding a transmission section Tpmax corresponding to the maximum transmission packet length of the wireless LAN to the head of the intermittent standby operation time Tp in the mobile phone function section.
The cellular phone device according to claim 2, wherein Further comprising a measuring means for measuring the received electric field strength of the mobile phone in the mobile phone function unit,
When the reception electric field strength of the mobile phone exceeds a predetermined value, the transmission prohibition section generator does not generate a transmission prohibition section, or the wireless LAN function section performs a packet transmission operation even in the transmission prohibition section.
The mobile phone device according to claim 1. A communication control method for a cellular phone device including a cellular phone function unit that performs a transmission / reception operation in a cellular phone and a wireless LAN function unit that performs a packet transmission / reception operation in a wireless LAN,
A transmission prohibition section generating step for generating a transmission prohibition section for avoiding disturbing the standby operation of the mobile phone;
A packet transmission prohibition control step for performing packet transmission prohibition control in the wireless LAN function unit in the transmission prohibition section;
A communication control method for a mobile phone device, comprising: A notification signal is transmitted from the mobile phone base station through a paging channel provided at an interval of a predetermined period Tb, and the mobile phone function unit intermittently performs a standby operation in the paging channel of the group to which the mobile phone base station belongs. And
In the transmission prohibition section generation step, a transmission prohibition section is generated at a timing according to the intermittent standby operation of the notification signal in the mobile phone function unit.
The communication control method for a cellular phone device according to claim 5. In the transmission prohibition section generating step, a transmission prohibition section consisting of a time of Tpmax + Tp, which is obtained by adding a transmission section Tpmax corresponding to the maximum transmission packet length of the wireless LAN to the head of the intermittent standby operation time Tp in the mobile phone function unit, is generated.
The communication control method for a mobile phone device according to claim 6. A measuring step of measuring the received electric field strength of the mobile phone in the mobile phone function unit;
When the reception electric field strength of the mobile phone exceeds a predetermined value, the wireless LAN function unit does not generate the transmission prohibited section in the transmission prohibited section generation step or ignores the transmission prohibited section in the packet transmission prohibition control step. Allow packet transmission operations,
The communication control method for a cellular phone device according to claim 5. Computer-readable so that processing for controlling communication operations of a cellular phone device having a cellular phone function unit that performs transmission / reception operations in a cellular phone and a wireless LAN function unit that performs packet transmission / reception operations in a wireless LAN is executed on a computer. A computer program written in a format for the computer
A transmission prohibition section generation procedure for generating a transmission prohibition section to avoid disturbing the standby operation of the mobile phone;
A measurement procedure for measuring the received electric field strength of the mobile phone in the mobile phone function unit;
A packet transmission prohibition control procedure for performing packet transmission prohibition control in the wireless LAN function unit in the transmission prohibition section according to the reception electric field strength of the mobile phone;
A computer program for executing

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