JPH07283781A - Mobile communication system - Google Patents

Abstract

PURPOSE:To provide the mobile communication system capable of shifting to the broadcast communication state immediately without through the base station by using one radio channel for communication and performing the broadcast communication between mobile stations even when there is no idle communication channel of the base station and making an effective use of a radio channel. CONSTITUTION:A simultaneous incoming means 1 sends a batch incoming control signal (a) for plural mobile stations B to D from a mobile station A which requires a simultaneous incoming from one radio channel available from among plural radio channels for communication. A broadcast waiting means 4 waits for a broadcast communication signal (b) from the mobile station A at the side of requesting the batch incoming by the radio channel thereafter when the mobile stations B to D at the incoming side successively monitor the radio channel and one radio channel accepts the simultaneous incoming control signal (a). A broadcast transmission means 2 sends the broadcast communication signal (b) from one radio channel from the radio station A at the side of requesting the simultaneous incoming.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication system capable of performing broadcast communication between mobile stations.

[0002]

2. Description of the Related Art In recent years, with the progress of advanced information technology, mobile communication systems which are excellent in immediacy and functionality have attracted attention and have been realized in various forms such as mobile phones, car phones, MCA radios and the like. Further, steadily toward the realization of a PHP (Personal Handy Phone, which is a second-generation cordless phone) system that is an ideal mobile communication system that enables "anytime, anywhere, with anyone" communication. Preparations are in progress. This PHP system is used as a digital cordless telephone that replaces a conventional analog cordless telephone, and is capable of carrying and communicating indoors and outdoors, such as at home and in offices. It is composed of a small and lightweight terminal, an indoor base station which is a base unit of a so-called cordless telephone, a large number of outdoor base stations arranged outdoors, and a wireless communication line between the outdoor base stations. Then, the terminal is connected to the public line through the indoor base station when indoors, and through the outdoor base station provided nearby when outdoors, so that communication with the other party is possible. Becomes In addition, the base station serves as a relay station, which enables direct communication with other mobile stations. The radio frequency band used is 1.9 GHz, and the frequency interval is 30.
0 kHz is a time division multiple access system (TDMA system) as an access system, a time division bidirectional transmission system (TDD system) as a transmission system, and a duplex system (simultaneous transmission / reception system) as a communication system. As a method, a four-value phase modulation (π / 4 shift QPSK) method is used.

By the way, in operating a mobile communication system, a plurality of wireless stations, such as an emergency contact, are
It may be necessary to report the same contents at the same time. In such a case, so-called broadcast communication is performed, and a request for simultaneous incoming call is made from the wireless station that is the calling source. As an example of such a conventional broadcast communication system, for example, in Japanese Unexamined Patent Publication (Kokai) No. 63-283129, when a radio base station receives a broadcast call request from a radio telephone, that is, a mobile station, all of the groups in the group are A technique of wirelessly relaying a broadcast call signal to a wireless telephone is disclosed. In addition,
All wireless telephones in the group are all wireless telephones that are registered in the wireless zone served by the wireless base station and are used for mobile communication.Each wireless telephone is given an identification number. Has been done.

[0004]

However, in the above-mentioned conventional broadcast communication system, the control wireless channel is used at the time of simultaneous incoming call, and the communication wireless channel is used at the time of broadcast communication. Therefore, the channels must be switched, There is a problem that extra time and channel resources are required for the broadcast communication as compared with the case where the broadcast communication is immediately performed using one communication wireless channel. Further, since the broadcast communication must always go through the base station, there is a problem that the broadcast communication cannot be performed if the base station does not have an available communication channel due to use of an outside line or the like. . Further, since the address of the wireless station of the broadcast destination cannot be specified, there is also a problem that even if the address of an unnecessary wireless station among the wireless stations on the receiving side is known in advance, it is targeted for the simultaneous incoming call. Further, since the service of the wireless station of the broadcast destination cannot be specified, there is a problem that proper communication cannot be performed such as making a phone call to a facsimile device by mistake.

The present invention has been made in view of the above circumstances, and a plurality of addresses are grouped while a wireless station requesting a simultaneous incoming call controls a broadcast communication state by using one wireless channel for a call. A mobile device that can perform one-to-one communication with a specific wireless station by performing broadcast communication only with a specific wireless station or broadcasting only with a wireless station with a specific service. An object is to provide a communication system.

[0006]

According to a first aspect of the present invention, there is provided a mobile communication system in which a wireless station can make a simultaneous incoming call to a plurality of other wireless stations. A simultaneous reception means for transmitting a simultaneous reception control signal from a wireless station requesting a simultaneous reception to a plurality of other wireless stations through one available wireless channel among the communication wireless channels, and each receiving side wireless Stations monitor radio channels in sequence,
When a broadcast incoming control signal is received by one wireless channel, a broadcast waiting means for waiting a broadcast communication signal from the wireless incoming requesting side wireless station by the wireless channel thereafter, and 1 from the broadcast incoming requesting side wireless station And a broadcast transmitting means for transmitting a broadcast communication signal via one radio channel.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, when the broadcast transmitting means of the broadcast receiving request side wireless station transmits the broadcast communication signal, it is stored in the broadcast communication signal. If data transmission validity specification means for designating valid / invalid of data is provided, and when each of the receiving side wireless stations receives the broadcast communication signal, if the data is designated as valid, the data is transmitted. It is characterized in that it is configured to acquire and discard the data when it is specified that the data is invalid.

According to a third aspect of the present invention, in addition to the configuration of the first aspect, a radio that requests a simultaneous incoming call by using one available wireless channel among a plurality of wireless channels for communication instead of the simultaneous incoming call means. By sending a simultaneous incoming call control signal from a station to multiple other wireless stations, and at that time, by setting the address information of a specific group among the receiving side wireless stations as the control information in the simultaneous incoming call control signal, , Is provided with an addressing simultaneous reception means for specifying a wireless station for simultaneous reception.

According to a fourth aspect of the present invention, in addition to the configuration of the first aspect, a radio that requests a simultaneous call is made by using one available radio channel among a plurality of communication radio channels instead of the broadcast receiving means. By transmitting a simultaneous incoming call control signal from a station to multiple other wireless stations, and at that time, by setting specific service information control of the services of each called wireless station as information to the simultaneous incoming call control signal It is characterized in that a service designation simultaneous reception means for designating wireless stations for simultaneous reception is provided.

According to a fifth aspect of the present invention, in addition to the structure of the first aspect, when the wireless station requesting the simultaneous incoming call is in a state of maintaining a broadcast communication state with each wireless station on the receiving side. , Polling request means for sequentially polling each wireless station by transmitting a broadcast signal including control information of the polling request, and broadcast communication including control information of the polling request by each receiving side wireless station And a polling response means for returning a polling response signal when the signal is received.

According to a sixth aspect of the invention, in addition to the configuration of the fifth aspect, instead of the polling requesting means, the wireless station requesting the simultaneous incoming call maintains a broadcast communication state with each of the receiving side wireless stations. When the status is left as it is, a broadcast signal including control information for polling request is transmitted, and at that time, by managing the address of the wireless station to be polled, only the wireless stations of a specific group are sequentially processed. It is characterized in that a wireless station-specified polling request means for polling is provided.

According to a seventh aspect of the invention, in addition to the configuration of the fifth aspect, the wireless station that has requested the simultaneous incoming call maintains the polling state with each wireless station on the receiving side, and the wireless station on the receiving side. When performing broadcast transmission from, when the broadcast communication signal including the control information of the polling request is received, the control information of the press talk request and the broadcast data are set in the press talk request signal and transmitted, Press talk request means for requesting a press talk to the wireless call requesting wireless station, and each wireless station when the wireless call requesting wireless station accepts the press talk request of the receiving wireless station On the other hand, the press talk reception means for setting the broadcast data stored in the press talk request signal and the control information of the press talk reception to the broadcast communication signal and transmitting the broadcast, and the press talk requesting device. When the local radio station cancels the press talk request, the control information and data of the press talk off request is set in the press talk off signal and transmitted, so that each radio station is put into the polling state again. And a requesting means.

According to the invention of claim 8, in addition to the structure of claim 7, instead of the press talk requesting means, the wireless station requesting the simultaneous incoming call maintains a polling state with each wireless station on the receiving side. Up to now, when performing broadcast transmission from the radio station on the receiving side, when the broadcast communication signal including the control information of the polling request is received, the control information of the press talk request and the broadcast data are converted into the press talk request signal. By setting and transmitting, a press talk request is sent to the wireless station on the simultaneous call request side, and at that time, the address information of a specific group of the broadcast destination wireless stations is controlled by the press talk request signal. An addressing press talk request means for designating a transmission destination of the broadcast communication signal by setting the information is provided,
Instead of the press talk reception means, when the radio station of the simultaneous call request side receives the press talk request of the call side radio station, the broadcast data stored in the press talk request signal is sent to each radio station. And an addressing press talk reception means for setting the control information of press talk reception and the address information of a specific group of the wireless station to which the press talk request signal is broadcast to the broadcast communication signal and performing the broadcast transmission. It is characterized by that.

According to a ninth aspect of the present invention, in addition to the configuration of the fifth aspect, the wireless station requesting the simultaneous incoming call maintains the polling state with each wireless station on the incoming side, and the wireless station on the incoming side. When performing a one-to-one communication with a wireless station that has requested a simultaneous call reception, when a polling request signal is received, a one-to-one communication request including control information for the one-to-one communication request is sent to the wireless station of the simultaneous call reception request side. One-to-one communication requesting means for requesting one-to-one communication by transmitting a signal, and one-to-one communication acceptance when the wireless station of the simultaneous incoming call requesting side receives the request of one-to-one communication of the receiving side wireless station A one-to-one communication receiving means for transmitting a broadcast communication signal including control information of the one, and transitioning to the one-to-one communication state using the wireless channel used for the simultaneous incoming call,
Among the wireless stations on the receiving side, a wireless station other than the wireless station that performs one-to-one communication is returned to the control for waiting for an incoming call from another wireless station, and broadcast communication canceling means is provided.

[0015]

According to the invention of claim 1, the simultaneous call receiving means uses one available wireless channel among a plurality of communication wireless channels from a wireless station requesting a simultaneous incoming call to a plurality of other wireless stations. Send a simultaneous incoming call control signal. The broadcast waiting means monitors the radio channels of each radio station on the receiving side one by one, and when a radio call control signal is received by one radio channel, the broadcast waiting means thereafter sends a broadcast call from the radio station on the broadcast receiving request side by the radio channel. Wait for the information signal. The broadcast transmission means transmits a broadcast communication signal from the radio station on the broadcast incoming call request side through one radio channel.

According to the second aspect of the present invention, the broadcast transmission data validity designating means stores the broadcast communication signal when the broadcast transmitting means of the radio station on the broadcast incoming request side transmits the broadcast communication signal. Specify valid / invalid of data. Then, when each wireless station on the receiving side receives the broadcast signal, if the data is specified to be valid, the data is acquired, and if the data is specified to be invalid, Discard the data.

In the third aspect of the present invention, the addressing simultaneous call receiving means uses one available wireless channel among a plurality of communication wireless channels from a wireless station requesting a simultaneous incoming call to a plurality of other wireless stations. A call reception control signal is sent to the call reception side, and at that time, the address information of a specific group among the radio stations on the receiving side is set as control information in the call reception control signal to specify the radio station receiving the call reception. To do.

[0018] In the invention of claim 4, the service-designated simultaneous call receiving means uses one available wireless channel among a plurality of communication wireless channels from a wireless station requesting a simultaneous incoming call to a plurality of other wireless stations. A call reception control signal is transmitted to the call reception side, and at that time, by specifying specific service information of the services of each radio station on the receiving side as control information in the call reception control signal, the radio stations receiving the call reception can be designated. To do.

According to another aspect of the invention, the polling requesting means, when the wireless station requesting the simultaneous incoming call is in a state of maintaining a broadcast communication state with each wireless station on the receiving side,
By transmitting a broadcast communication signal including control information of a polling request, each wireless station is sequentially polled. The polling response means returns a polling response signal when each wireless station on the receiving side receives the broadcast signal including the control information of the polling request.

In a sixth aspect of the present invention, the wireless station designation polling requesting means, when the wireless station requesting the simultaneous incoming call is in a state of maintaining a broadcast communication state with each of the receiving side wireless stations, A broadcast signal including control information of a polling request is transmitted, and at that time, by managing the address of the wireless station to be polled, only the wireless stations of a specific group are sequentially polled.

[0021] In the invention of claim 7, the press talk requesting means broadcasts from the wireless station on the receiving side while the wireless station requesting the simultaneous incoming call maintains the polling state with each wireless station on the receiving side. In the case of transmission, when a broadcast communication signal including control information for polling request is received, the control information for press talk request and the broadcast data are set in the press talk request signal and transmitted, thereby making a simultaneous call request. Request a press talk from the local radio station. When the wireless station on the simultaneous call request side receives the request for the press talk from the wireless station on the receiving side, the press talk reception means sends the broadcast data and the press data stored in the press talk request signal to each wireless station. The control information of the talk reception is set to the broadcast communication signal and the broadcast transmission is performed. Press talk off request means,
When the radio station on the receiving side that has made a press talk request cancels the press talk request, the control information and data of the press talk off request are set in the press talk off signal and transmitted, so that each radio station again. To poll.

According to the eighth aspect of the present invention, the addressing press talk requesting means is provided from the receiving side wireless station while the wireless station requesting the simultaneous incoming call maintains the polling state with each receiving side wireless station. When performing broadcast transmission, when a broadcast communication signal including control information for a polling request is received, the control information for the press talk request and the broadcast data are set in the press talk request signal and transmitted, so that the broadcast is performed simultaneously. A press talk request is made to the incoming call requesting wireless station, and at that time, the broadcast information is set by setting the address information of a specific group among the broadcast destination wireless stations in the control information of the press talk request signal. Specify the signal destination. The address-specified press talk reception means receives the broadcast data stored in the press talk request signal for each wireless station when the wireless reception side requests the press talk request from the receiving side wireless station. Then, the control information for accepting the press talk and the address information of the specific group of the radio station to which the press talk request signal is broadcast are set in the broadcast communication signal and transmitted by broadcast.

In the ninth aspect of the present invention, the one-to-one communication requesting means is configured such that the wireless station on the receiving side maintains the polling state with the wireless station requesting the simultaneous incoming call with each wireless station on the receiving side. When performing a one-to-one communication with a wireless station that has requested a simultaneous incoming call, when a polling request signal is received, a one-to-one communication request signal containing control information for the one-to-one communication request is sent to the wireless station on the simultaneous incoming call request side. By sending, a one-to-one communication request is made. The one-to-one communication reception means transmits a broadcast communication signal including control information for reception of one-to-one communication when the wireless station on the simultaneous incoming call request side receives a request for one-to-one communication of the receiving side wireless station, It shifts to the one-to-one communication state using the wireless channel used for the simultaneous call reception. The broadcast communication canceling means returns the wireless stations other than the wireless station that performs one-to-one communication among the wireless stations on the receiving side to the control of waiting for an incoming call from another wireless station.

[0024]

Embodiments of the present invention will now be described in detail with reference to the drawings. (Embodiment 1) FIG. 1 is a conceptual explanatory diagram of a mobile communication system according to Embodiment 1 of the present invention, and is a system configuration in which one radio channel is used between mobile stations to make simultaneous incoming calls to a plurality of other mobile stations. The mobile station A makes a simultaneous incoming call request and the mobile stations B to D on the receiving side. Although there are actually more mobile stations on the called side, only three mobile stations B to D are used here for the sake of clarity. The mobile station A and the mobile stations B to D can communicate with each other in the wireless zone Z. Mobile station A
The broadcast receiving means 1 is provided with a broadcast receiving means 1, a broadcast transmitting means 2 and a broadcast transmitting data valid designating means 3, and the mobile stations B to D are respectively provided with a broadcast waiting means 4. In addition, mobile stations B to D
Also has a broadcast receiving means 1, a broadcast transmitting means 2 and a broadcast transmission data valid designating means 3, and the mobile station A also has a broadcast waiting means 4, the explanation of which is understood. Illustration is omitted for the sake of simplicity. Furthermore, mobile stations A to D
In addition to the above, a large number of constituent elements for communication are provided in, but they are well known and have no direct relation to the gist of the present invention, and therefore description thereof will be omitted. Moreover, the same applies to the following examples regarding the omission thereof. The simultaneous call reception means 1 sends a simultaneous call control signal from the mobile station A requesting a simultaneous call to a plurality of other mobile stations B to D by using one available wireless channel among a plurality of communication wireless channels. Send. That is, the simultaneous call reception means 1 performs the simultaneous call reception by transmitting the simultaneous call control signal a shown in FIG. 2 to each of the mobile stations B to D. The simultaneous incoming call control signal a is
It is composed of a wireless connection area and a paging control area, and designated group address information and designated service information can be set in the paging control area. Broadcast transmission means 2
The broadcast signal is transmitted from the mobile station A on the simultaneous call request side through one radio channel. That is, the broadcast transmission means 2
Sends the broadcast communication signal b shown in FIG. 3 to each of the mobile stations B to D. The broadcast communication signal b includes a wireless connection area, a broadcast communication control area, and a broadcast communication information area. In the broadcast communication control area, the control type and the address of the target wireless station can be set. In the broadcast communication information area, it is possible to set valid / invalid of the broadcast information data and the broadcast information data. The broadcast transmission data validity designating means 3 designates validity / invalidity of data stored in the broadcast communication signal b when the broadcast transmission means 2 transmits the broadcast communication signal b. That is, the broadcast transmission data validity designating means 3 determines that the broadcast communication signal b
In the broadcast communication information area of, whether the broadcast information data is valid or invalid is set. The broadcast waiting unit 4 sequentially monitors the wireless channels of each of the mobile stations B to D on the receiving side, and when receiving the simultaneous reception control signal a by one wireless channel, thereafter, the broadcast receiving request side by the wireless channel. It waits for the broadcast communication signal b from the mobile station A. That is, the broadcast waiting unit 4 puts the mobile stations B to D into a state of waiting for the broadcast communication signal from the mobile station A when the mobile stations B to D receive the simultaneous incoming call control signal a.

Next, regarding the operation of the above-mentioned mobile communication system, FIG.
Description will be made with reference to the control sequence shown in FIG. First, the mobile station A selects a channel and a slot for simultaneous incoming call, and the simultaneous incoming call means 1 continuously sends out the simultaneous incoming call control signal a. A slot is a collection of bit strings corresponding to physical channels multiplexed on the time axis in the TDMA method. On the other hand, the mobile stations B to D on the called side sequentially monitor a plurality of channels used among the mobile stations A to D, and when the simultaneous incoming control signal a is received, the broadcast waiting means 4 is used. , And the subsequent broadcast signal b is awaited in the channel and slot in which the simultaneous incoming control signal a is received. The mobile station A continuously transmits the simultaneous incoming call control signal a, and after a sufficient time T1 for reaching the broadcast communication standby state has elapsed, the broadcast transmitting means 2 broadcasts the mobile stations B to D. By transmitting the signal b, the mobile stations A to D are put into the broadcast communication state. The broadcast transmission data validity designating means 3 sets validity or invalidity of the broadcast information data in the broadcast communication information area of the broadcast communication signal b to designate whether the broadcast information data is valid or invalid. It can be done at the time of transmission. Then, the mobile stations B to D determine whether the broadcast information data is valid or invalid in the broadcast communication information area of the broadcast communication signal b at the time of reception. , Decide whether to include or discard the broadcast information data. In addition, the control information is invalid immediately after the simultaneous incoming call.

As described above, it is possible to immediately shift to the broadcast communication state by using one communication radio channel without going through the base station. Therefore, even if the communication channel of the base station is not available, the broadcast communication can be performed between the mobile stations, and the wireless channel can be effectively used. Further, since the broadcast transmission data validity designating means 3 is provided, it is possible to designate whether the broadcast transmission data is valid or invalid. (Embodiment 2) FIG. 5 is a conceptual explanatory diagram of a mobile communication system in Embodiment 2 of the present invention. The difference from the first embodiment shown in FIG. The point is that the designated simultaneous call-in means 6 is provided. The addressing simultaneous call receiving means 6 controls the simultaneous call reception from the mobile station A requesting the simultaneous call reception to a plurality of other mobile stations B to D by using one available wireless channel among a plurality of communication wireless channels. By transmitting the signal a, and at that time, by setting the address information of a specific group among the mobile stations B to D on the receiving side as the control information in the simultaneous incoming control signal a,
Designate mobile stations for simultaneous incoming calls. That is, the addressing simultaneous paging means 6 sets the designated group address information in the paging control area of the paging control signal a when transmitting the paging control signal a at the time of paging. By thus specifying the address of a specific group, it is possible to specify the mobile stations that receive simultaneous calls by the address.

Next, regarding the operation of the above mobile communication system, FIG.
Description will be made with reference to the control sequence shown in FIG. The control sequence of FIG. 6 is different from the control sequence of the first embodiment shown in FIG. 4 in that the addressing of the mobile stations that receive a simultaneous call is performed at the time of a simultaneous call. Mobile station B on the called side
When D receives the simultaneous incoming call control signal a from the mobile station A, it refers to the specified group address information of the simultaneous incoming call control area of the simultaneous incoming call control signal a, and if it matches with its own station, the subsequent simultaneous broadcast Control from the incoming call to the broadcast communication state is performed, and if they do not match, all control information regarding subsequent simultaneous incoming calls is discarded. As a result, it is possible to specify the mobile stations that receive simultaneous incoming calls by address. In this example, since the mobile stations C and D are designated, the mobile station B discards the simultaneous incoming call control signal a and the broadcast communication signal b.

As described above, while controlling the broadcast communication state, a plurality of addresses are grouped and the broadcast communication is performed only to a specific radio station. Therefore, various broadcast destination terminals such as a facsimile machine and a telephone. , Its address can be designated in advance, and proper communication without error can be performed. (Third Embodiment) FIG. 7 is a conceptual explanatory diagram of a mobile communication system according to a third embodiment of the present invention. The difference from the mobile communication system of the first embodiment shown in FIG. The point is that the service specifying simultaneous call receiving means 8 is provided. The service-designated simultaneous call receiving means 8 controls the simultaneous call reception from the mobile station A requesting the simultaneous call reception to a plurality of other mobile stations B to D by using one available radio channel among a plurality of communication radio channels. The signal a is transmitted, and at that time, specific service information of the services of the mobile stations B to D on the receiving side is set as the control information in the simultaneous reception control signal a to specify the mobile stations to receive the simultaneous reception. To do.
That is, the service-designated simultaneous call receiving means 8 sets the designated service information in the simultaneous call reception control area of the simultaneous call reception control signal a when transmitting the simultaneous call reception control signal a at the time of simultaneous reception. By specifying a specific service name in this way, it is possible to specify mobile stations that receive simultaneous calls by the service name.

Next, regarding the operation of the above mobile communication system, FIG.
Description will be made with reference to the control sequence shown in FIG. The control sequence of FIG. 8 is different from the control sequence of the first embodiment shown in FIG. 4 in that the mobile stations that receive the simultaneous call are designated by the service name when the simultaneous call is received. The mobile stations B to D on the called side receive the service-designated simultaneous call receiving means 8 of the mobile station A.
When the simultaneous incoming call control signal a from is received, the service information set in the simultaneous incoming call control area of the simultaneous incoming call control signal a is referred to. Control to reach the broadcast communication state is performed, and if they do not match, all control information relating to the subsequent simultaneous incoming call is discarded. As a result, mobile stations that receive simultaneous calls can be specified by the service name. In this example, since the telephone service is designated, the mobile station B of the FAX service discards the simultaneous incoming call control signal a and the broadcast communication signal b.

As described above, since the broadcast communication is performed only to the mobile station of a specific service while controlling the broadcast communication state, it is possible to perform advance communication to various broadcast destination terminals such as a facsimile machine and a telephone. The service can be specified and proper communication can be performed without error. (Fourth Embodiment) FIG. 9 is a conceptual explanatory diagram of a mobile communication system according to a fourth embodiment of the present invention. The difference from the first embodiment shown in FIG. 1 is that the mobile station A is provided with polling request means 10. The mobile stations B to D are provided with polling response means 11. The polling request means 10 includes control information for the polling request when the mobile station A, which has requested the simultaneous incoming call, is in a state of maintaining the broadcast communication state with the mobile stations B to D on the receiving side. By transmitting the information communication signal b, the mobile stations B to D are sequentially polled. That is, the polling request means 10 sequentially transmits the broadcast communication signal b to each of the mobile stations B to D in the broadcast communication state, and at that time, the control type information is sent to the broadcast communication control area of the broadcast communication signal b. "Polling request" is set as. Each of the mobile stations B to D that has received the broadcast communication signal b refers to the information regarding the address of the target wireless station set in the broadcast communication control area of the broadcast communication signal b and sets the address of its own station. In this case, the polling response means 11 returns a polling response signal when each of the mobile stations B to D on the receiving side receives the broadcast communication signal b including the control information of the polling request. That is, the polling response means 11 transmits the reply signal c shown in FIG. 10 to the mobile station A as a polling response signal. The reply signal c includes a wireless connection area, a control area, and an information area. Control type information and address information of a broadcast destination can be set in the control area, and broadcast information data can be set in the information area. Is. Then, the polling response means 11 sets “polling response” as the control type information in the control area when transmitting the reply signal c as the polling response signal.

Next, regarding the operation of the mobile communication system, refer to the control sequence shown in FIG. 11 in the case where the mobile station A, which has requested the simultaneous incoming call from the broadcast communication state, becomes the polling state by broadcasting the polling request. While explaining. First, the polling request means 10 of the mobile station A that has requested the simultaneous incoming call sends a polling request. At this time, in the broadcast communication control area of the broadcast communication signal b, "polling request" as the control type information, "C" as the address information of the target wireless station, and the broadcast information valid / invalid in the broadcast communication information area. As the designated information, "valid" is set together with the broadcast information data. Among the mobile stations B to D that have received the broadcast communication signal b, the mobile station C targeted for polling receives the broadcast communication signal b, and the mobile stations B and D not targeted for the broadcast communication broadcast. Discard signal b. Polling response means 1 of mobile station C that received the polling request
As a response, 1 transmits a reply signal c as a polling response signal to the mobile station A. At this time, "polling response" is set as the control type information in the control area of the reply signal c as the polling response signal. Subsequently, the mobile station A makes a polling request to the mobile station D.
The broadcast communication signal b is transmitted. This will give you
The polling response means 11 of the mobile station D transmits a reply signal c as a polling response signal to the mobile station A.

In this way, polling communication can be performed as it is from the broadcast communication state, which is an effective means for improving the service. (Fifth Embodiment) FIG. 12 is a conceptual explanatory diagram of a mobile communication system according to a fifth embodiment of the present invention. This mobile communication system is different from the mobile communication system according to the fourth embodiment shown in FIG. The point is that a radio station designation polling requesting means 13 is provided instead of the requesting means 10. The wireless station designation polling request means 13 controls the polling request when the mobile station A that has requested the simultaneous incoming call is in the state of maintaining the broadcast communication state with the mobile stations B to D on the receiving side. By transmitting a broadcast signal b containing a controllable address of a mobile station to be polled at that time, only mobile stations of a specific group are sequentially polled. That is, the wireless station designated polling requesting means 13 manages the address of the mobile station requesting polling in advance, and sequentially polls according to the management list.

Next, regarding the operation of the mobile communication system, refer to the control sequence shown in FIG. 13 in the case where the mobile station A which has requested the simultaneous incoming call from the broadcast communication state enters the polling state by broadcasting the polling request. While explaining. This control sequence differs from the control sequence of the fourth embodiment shown in FIG. 11 in that mobile station A makes a polling request according to a polling address list managed in advance. That is, since the mobile stations B and D are registered in the polling address list, the mobile station C that is out of the polling address list
Cannot receive the polling request from mobile station A.

As described above, polling communication can be performed by designating the mobile station as it is from the broadcast communication state, which is an effective means for improving the service. (Sixth Embodiment) FIG. 14 is a conceptual explanatory diagram of a mobile communication system according to a sixth embodiment of the present invention. This mobile communication system is different from the mobile communication system of the fourth embodiment shown in FIG. The talk reception means 15 is provided, and the mobile stations B to D on the receiving side are provided with the press talk request means 16 and the press talk off request means 17. The press talk request means 16 determines the mobile station A that has requested the simultaneous incoming call.
Is broadcasting from the mobile stations B to D on the receiving side while maintaining the polling state with the mobile stations B to D on the receiving side, the broadcast communication signal b including the control information of the polling request. When receiving the press talk, the control information and the broadcast data of the press talk are set in the reply signal c as the press talk request signal and transmitted, thereby transmitting the press talk to the mobile station A on the simultaneous call incoming request side. Make a request. That is, when each of the mobile stations B to D that has received the polling request has a request for broadcast transmission by press talk, the press talk requesting means 16 replaces the reply signal c as the polling response signal at the time of shifting to the polling state. A reply signal c as a press talk request signal is transmitted. At this time, "press talk request" is set as the control type information in the control area of the reply signal c as the press talk request signal. When the mobile station A on the simultaneous call request side receives the request for press talk from the mobile stations B to D on the call reception side, the press talk accepting means 15 sends a press talk request signal to each of the mobile stations B to D. The broadcast data stored in the reply signal c and the control information for accepting the press talk are set in the broadcast communication signal b and transmitted by broadcast. That is, the press talk acceptance means 15
When the press talk request from the press talk request means 16 is received, the broadcast communication signal b as the press talk acceptance signal is broadcast together with the data set in the press talk request. At this time, "press talk acceptance" is set as the control type information in the broadcast communication control area of the broadcast communication signal b as the press talk acceptance signal. The press talk-off requesting means 17 uses the control information and data of the press talk-off request as a press talk-off signal when the receiving side mobile stations B to D that have made the press talk request release the press talk request. By setting the reply signal c and transmitting it, the mobile stations A to D are put into the polling state again. That is, the press talk-off requesting means 17 transmits a press talk-off request from the mobile station that has issued the press talk request when canceling the press talk request. At this time, “press talk off request” is set as the control type information in the control area of the reply signal c as the press talk off signal.

Next, regarding the operation of the above-mentioned mobile communication system, FIG. 15 shows a case where the mobile station on the receiving side makes a press talk request to shift to a broadcast communication state by press talk, and a press talk off request makes the polling state again.
Description will be made with reference to the control sequence shown in FIG. The mobile station A transmits a broadcast signal b as a polling request signal to the mobile station D. When the mobile station D that has received the broadcast communication signal b has a request for broadcast transmission by press talk, the press talk request means 16 transmits a reply signal c as a press talk request signal instead of the polling response signal. . If mobile station A accepts this,
The press talk acceptance means 15 sets “press talk acceptance” as control type information in the broadcast communication control area of the broadcast communication signal b, and sends it to each of the mobile stations B to D together with the broadcast information of the press talk request. Send broadcast. As a result, the broadcast data of the mobile station D is returned and broadcast via the mobile station A, and a press talk communication state is set. On the other hand, mobile station D
When the press talk ends, the press talk off request means 17 transmits the reply signal c as the press talk off request signal, so that the mobile station A starts polling again and the other mobile station C is started. And transmits a broadcast communication signal b as a polling request signal.

In this way, since the press talk communication can be performed as it is from the polling communication state, it becomes an effective means for improving the service. (Embodiment 7) FIG. 16 is a conceptual explanatory diagram of a mobile communication system according to Embodiment 7 of the present invention. The point that this mobile communication system differs from the mobile communication system of Embodiment 6 shown in FIG.
The mobile station A is provided with addressing press talk accepting means 19 instead of the press talk accepting means 15, and each of the mobile stations B to D on the called side has addressing press talk requesting means 20 instead of the press talk requesting means 16. It is a point to have. The addressing press talk requesting means 20
The mobile station A that has requested the simultaneous incoming call is the mobile stations B to D on the receiving side.
When performing broadcast transmission from the mobile stations B to D on the receiving side while maintaining the polling state between and, the press talk request of the press talk request is received when the broadcast communication signal b including the control information of the polling request is received. By setting the control information and the broadcast data in the reply signal c as the press talk request signal and transmitting the request, a press talk request is made to the mobile station A on the simultaneous call incoming request side, and at that time, the broadcast information is sent. The destination of the broadcast communication signal b is specified by setting address information of a specific group among the mobile stations B to D as control information in the reply signal c as the press talk request signal. That is, the addressing press talk request means 20 sets the address of the mobile station of the broadcast destination in the control area of the reply signal c as the address information of the broadcast destination when transmitting the reply signal c as the press talk request signal. When the mobile station A on the simultaneous call request side receives the request for the press talk from the mobile stations B to D on the call reception side, the address-specified press talk reception means 19 receives the request.
For each of the mobile stations B to D, the broadcast data stored in the reply signal c as the press talk request signal, the control information for accepting the press talk, and the broadcast destination of the reply signal c as the press talk request signal. The address information of a specific group of mobile stations is set in the broadcast communication signal b and broadcasted. That is, the addressing press talk accepting means 19 sets the address of the broadcast destination mobile station specified as the address information of the broadcast destination in the control area of the reply signal c as the press talk request signal to the broadcast area of the broadcast communication signal b. It is set as the address information of the target wireless station in the information communication control area.

Next, regarding the operation of the above-mentioned mobile communication system, FIG. 17 shows a case in which the mobile station on the receiving side makes a press talk request to shift to a broadcast communication state by press talk, and a press talk off request makes the polling state again.
Description will be made with reference to the control sequence shown in FIG. This control sequence is different from the control sequence of the sixth embodiment shown in FIG. 15 in that the address of the broadcast destination at the time of press talk request can be designated. When the mobile station D transmits the reply signal c as the press talk request signal, the addressing press talk request means 20 sets the address information of the broadcast destination in the control area. When the mobile station A receives the reply signal c as the press talk request signal, the addressing press talk acceptance means 19 acquires the address set in the control area of the reply signal c, and the same as the press talk acceptance signal. When transmitting the broadcast communication signal b, the address is set in the broadcast communication control area as address information. When the mobile stations B to D on the receiving side receive the broadcast communication signal b as the press talk acceptance signal from the mobile station A, the target radio stations set in the broadcast communication control area of the broadcast communication signal b. Refer to the address information of, and if it matches with your own station, import the information, and if it does not match, discard it. In this example, the mobile station D is a "mobile station A, C, D" as a recipient of the press talk request.
Is specified. For this reason, the undesignated mobile station B discards the broadcast communication signal b as the press talk acceptance signal.

As described above, since the press talk communication can be performed by directly designating the mobile station from the polling communication state, this is an effective means for improving the service. (Embodiment 8) FIG. 18 is a conceptual explanatory diagram of a mobile communication system according to an embodiment 8 of the present invention. Mobile station A is provided with one-to-one communication accepting means 22, and mobile stations B to D are one-to-one communication requesting means. 23 and a broadcast communication canceling means 24. The one-to-one communication requesting means 23 keeps the polling state between the mobile station A that has requested the simultaneous incoming call and the mobile stations B to D on the incoming side, while the mobile stations B to D on the incoming side receive the simultaneous incoming call. When performing the one-to-one communication with the mobile station A requesting the request, when the broadcast communication signal b as the polling request signal is received, the control information of the one-to-one communication request is sent to the mobile station A on the simultaneous incoming call request side. A request for one-to-one communication is made by transmitting a reply signal c as a one-to-one communication request signal containing the reply signal. That is, when there is a one-to-one communication request, the one-to-one communication requesting unit 23 transmits the reply signal c as the one-to-one communication request signal instead of transmitting the reply signal c as the polling response signal. At this time, "one-to-one communication request" is set as the control type information in the control area of the reply signal c. The one-to-one communication reception means 22 is a broadcast communication signal including control information for reception of one-to-one communication when the mobile station A on the simultaneous incoming call request side receives a request for one-to-one communication of the mobile stations B to D on the receiving side. b is transmitted to shift to the one-to-one communication state using the wireless channel used for the simultaneous incoming call. That is, the one-to-one communication reception means 22
When the one-to-one communication request is received, the broadcast communication signal b is transmitted as the one-to-one communication acceptance signal. On this occasion,
In the broadcast communication control area of the broadcast communication signal b, "one-to-one communication acceptance" is set as control type information. Broadcast communication canceling means 2
4 returns the mobile stations other than the mobile station that performs one-to-one communication among the mobile stations B to D on the receiving side to the control of waiting for an incoming call from another mobile station again. That is, the broadcast communication canceling means 24 returns to the initial incoming call monitoring state again when each mobile station which does not perform the one-to-one communication receives the broadcast communication signal b as the one-to-one communication acceptance signal.

Next, the operation of the above mobile communication system is shown in FIG. 19 in the case where the mobile station on the receiving side shifts to the one-to-one communication state by the one-to-one communication request, while the other mobile stations return to the initial incoming call monitoring. This will be described with reference to the control sequence. The mobile station D which has received the polling request transmits the reply signal c as the one-to-one communication request signal, and the mobile station A which has received the reply signal c as the one-to-one communication request signal
Broadcasts a broadcast communication signal b as a one-to-one communication acceptance signal, whereby the mobile station A and the mobile station D shift to a one-to-one communication state. Also, while the mobile station A and the mobile station D shift to the one-to-one communication state, the other mobile stations B and C return to the initial incoming call monitoring state.

In each of the above-mentioned embodiments, during the simultaneous incoming call, the simultaneous incoming call control signal a is continuously transmitted to the mobile stations B to D on the called side for a sufficient time T1 to reach the waiting state for the broadcast communication. However, instead of this, at the time when the mobile stations B to D on the called side are in the waiting state for the broadcast communication,
It may be configured to return a response.

[0041]

As described above, according to the present invention, there is provided a mobile communication system in which a wireless station can make a simultaneous incoming call to a plurality of other wireless stations. A simultaneous reception means for transmitting a simultaneous reception control signal from a wireless station requesting a simultaneous reception to a plurality of other wireless stations through one available wireless channel among the communication wireless channels, and each receiving side wireless When a station sequentially monitors wireless channels and receives a simultaneous incoming call control signal by one wireless channel, a broadcast waiting means for waiting for a broadcast communication signal from the wireless station on the simultaneous incoming call request side by the wireless channel thereafter, Since a broadcast transmitting means for transmitting a broadcast communication signal through one wireless channel from the wireless station on the simultaneous call request side is provided, it is possible to use one communication wireless channel without passing through the base station. It can be migrated to broadcast state. Therefore, even if the communication channel of the base station is not available,
Broadcast communication can be performed between mobile stations, and the wireless channel can be effectively used.

Also, when the broadcast transmitting means of the radio station on the broadcast incoming request side transmits the broadcast communication signal, the broadcast transmission data valid designation for designating the validity / invalidity of the data stored in the broadcast communication signal A means is provided, and when each of the receiving side wireless stations receives the broadcast signal, if the data is specified to be valid, the data is acquired, and the data is specified to be invalid. In the case, if it is configured to discard the data,
You can specify whether the broadcast data is valid or invalid.

In addition, instead of the simultaneous call receiving means, one available wireless channel among a plurality of communication wireless channels is used to control the simultaneous incoming call from a wireless station requesting a simultaneous incoming call to a plurality of other wireless stations. When a signal is transmitted and the address information of a specific group among the wireless stations on the receiving side is set as the control information in the simultaneous reception control signal, the addressing simultaneous reception is performed to specify the wireless stations receiving the simultaneous reception. If a means is provided, controlling the broadcast status,
Since multiple addresses can be grouped and broadcast communication can be performed only to a specific wireless station, it is possible to specify that address in advance for various broadcast destination terminals such as facsimile machines and telephones. Can communicate.

Further, instead of the simultaneous call receiving means, one available wireless channel among a plurality of wireless channels for communication is used to control the simultaneous incoming call from a wireless station requesting a simultaneous incoming call to a plurality of other wireless stations. When a signal is transmitted, at the same time, by specifying specific service information among the services of the receiving side wireless stations as control information in the simultaneous reception control signal, the service-specified simultaneous reception is performed to specify the wireless stations to receive the simultaneous reception. If a means is provided, controlling the broadcast status,
Since the broadcast communication can be performed only to the wireless station of a specific service, the service can be designated in advance to various broadcast destination terminals such as a facsimile machine and a telephone, and proper communication without error can be performed.

Further, when the wireless station requesting the simultaneous incoming call is in the state of maintaining the broadcast communication state with each of the receiving side wireless stations, the broadcast communication signal including the control information of the polling request is transmitted. By doing so, polling request means for sequentially polling each wireless station, and a polling response for returning a polling response signal when each receiving wireless station receives a broadcast signal including control information for the polling request If means is provided, polling communication can be performed as it is from the broadcast communication state, which is an effective means for improving the service.

Further, instead of the polling request means, when the wireless station requesting the simultaneous incoming call is in the state of maintaining the broadcast communication state with each receiving side wireless station, the control information of the polling request is sent. If a wireless station-specified polling request means for sequentially polling only the wireless stations of a specific group is provided by transmitting a broadcast communication signal including, and managing the addresses of the wireless stations to be polled at that time, It becomes possible to specify the wireless station as it is from the broadcast communication state and perform polling communication, which is an effective means for improving the service.

Further, while the wireless station requesting the simultaneous incoming call maintains the polling state with each wireless station on the receiving side,
When performing broadcast transmission from the receiving side wireless station, when a broadcast communication signal containing control information for polling request is received,
By setting control information and broadcast data of the press talk request to a press talk request signal and transmitting the press talk request signal, a press talk request means for requesting a press talk to the radio station on the call reception side and a call reception request. When the radio station on the receiving side receives the press talk request from the radio station on the receiving side, the broadcast data stored in the press talk request signal and the control information for press talk reception are broadcast to each radio station. A press talk accepting means for setting a communication signal and transmitting a broadcast,
When the radio station on the receiving side that has made a press talk request cancels the press talk request, the control information and data of the press talk off request are set in the press talk off signal and transmitted, so that each radio station again. By providing the press talk-off requesting means for making the polling state, press talk communication can be performed as it is from the polling communication state, which is an effective means for improving the service.

Further, instead of the press talk requesting means,
When the wireless station requesting the simultaneous incoming call performs the broadcast transmission from the receiving side wireless station while maintaining the polling state with the receiving side wireless stations, the broadcast communication signal including the control information of the polling request. When receiving, the press talk request signal is set to the press talk request signal and the broadcast data is set to the press talk request signal, and the press talk is requested to the radio station of the simultaneous call request side. In addition, an addressing press talk request means for designating the destination of the broadcast communication signal by setting the address information of a specific group of the broadcast destination radio stations in the control information of the press talk request signal is provided. Instead of the reception means, when the wireless station on the simultaneous call request side receives the press talk request from the wireless station on the call reception side, it is stored in the press talk request signal for each wireless station. Addressing press that sets the broadcast data, control information for press talk reception, and address information of a specific group of the wireless station of the broadcast destination of the press talk request signal to the broadcast communication signal and broadcasts. If the talk acceptance means is provided, press talk communication can be performed by directly specifying the address from the polling communication state, which is an effective means for improving the service.

Further, while the wireless station requesting the simultaneous incoming call maintains the polling state with each wireless station on the receiving side,
When the receiving side wireless station performs one-to-one communication with a wireless station that has requested a simultaneous incoming call, when it receives a polling request signal, it sends control information for the one-to-one communication request to the simultaneous incoming call requesting wireless station. A one-to-one communication requesting means for requesting one-to-one communication by transmitting a one-to-one communication request signal including the one-to-one communication request, and a case where the wireless station on the simultaneous incoming call request side receives the one-to-one communication request from the receiving side , A one-to-one communication reception means for transmitting a broadcast communication signal including control information for reception of one-to-one communication and shifting to a one-to-one communication state by using the wireless channel used for simultaneous incoming call By providing a broadcast communication canceling means for returning a radio station other than the one performing one-to-one communication to the control for waiting for an incoming call from another radio station again, if the broadcast communication state is directly established, Since one-to-one communication is possible, An effective means in achieving bis improved.

[Brief description of drawings]

FIG. 1 is a conceptual explanatory diagram of a mobile communication system according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram showing a data configuration of a simultaneous incoming call control signal.

FIG. 3 is a schematic diagram showing a data configuration of a broadcast communication signal.

FIG. 4 is a control sequence diagram illustrating an operation of the mobile communication system according to the first embodiment of the present invention.

FIG. 5 is a conceptual explanatory diagram of a mobile communication system according to a second embodiment of the present invention.

FIG. 6 is a control sequence diagram illustrating an operation of the mobile communication system according to the second embodiment of the present invention.

FIG. 7 is a conceptual explanatory diagram of a mobile communication system according to a third embodiment of the present invention.

FIG. 8 is a control sequence diagram illustrating an operation of the mobile communication system according to the third embodiment of the present invention.

FIG. 9 is a conceptual explanatory diagram of a mobile communication system according to a fourth embodiment of the present invention.

FIG. 10 is a schematic diagram showing a data structure of a reply signal.

FIG. 11 is a control sequence diagram illustrating an operation of the mobile communication system according to the fourth embodiment of the present invention.

FIG. 12 is a conceptual explanatory diagram of a mobile communication system according to a fifth embodiment of the present invention.

FIG. 13 is a control sequence diagram illustrating an operation of the mobile communication system according to the fifth embodiment of the present invention.

FIG. 14 is a conceptual explanatory diagram of a mobile communication system according to a sixth embodiment of the present invention.

FIG. 15 is a control sequence diagram illustrating an operation of the mobile communication system according to the sixth embodiment of the present invention.

FIG. 16 is a conceptual explanatory diagram of a mobile communication system according to a seventh embodiment of the present invention.

FIG. 17 is a control sequence diagram illustrating an operation of the mobile communication system according to the seventh embodiment of the present invention.

FIG. 18 is a conceptual explanatory diagram of a mobile communication system according to an eighth embodiment of the present invention.

FIG. 19 is a control sequence diagram illustrating an operation of the mobile communication system according to the eighth embodiment of the present invention.

[Explanation of symbols]

 1 Broadcasting Reception Means 2 Broadcast Transmission Means 3 Broadcast Transmission Data Effective Designating Means 4 Broadcast Waiting Means 6 Address Designation Broadcasting Means 8 Service Designation Broadcasting Means 10 Polling Request Means 11 Polling Response Means 13 Radio Station Designating Polling Means 15 Press Talk Receiving Means 16 Press Talk Requesting Means 17 Press Talk Off Requesting Means 19 Addressing Press Talk Receiving Means 20 Addressing Press Talk Requesting Means 22 One-to-One Communication Receiving Means 23 One-to-One Communication Requesting Means 24 Broadcast Communication Releasing Means

Claims (9)

[Claims] 1. A mobile communication system in which a wireless station can make a simultaneous incoming call to a plurality of other wireless stations, wherein each wireless station can use one of a plurality of wireless channels for communication. Broadcasting means for transmitting a broadcast incoming control signal from a radio station requesting a broadcast incoming call to a plurality of other radio stations by one radio channel, and each radio station on the receiving side sequentially monitors the radio channel, and
When a broadcast incoming call control signal is received by one radio channel, a broadcast waiting means for waiting a broadcast communication signal from the broadcast incoming call requesting wireless station by the radio channel thereafter, and a broadcast standby requesting side from the broadcast incoming call requesting side A mobile communication system comprising: a broadcast transmitting means for transmitting a broadcast communication signal via one radio channel. 2. A broadcast transmission data valid designation for designating validity / invalidity of data to be stored in the broadcast communication signal when the broadcast transmission means of the radio station on the broadcast incoming request side transmits the broadcast communication signal. Means is provided, and when each wireless station on the receiving side receives the broadcast communication signal, if the data is specified to be valid, the data is acquired, and the data is specified to be invalid. The mobile communication system according to claim 1, wherein the mobile communication system is configured to discard the data when the data is present. 3. A simultaneous reception control from a wireless station requesting a simultaneous reception to a plurality of other wireless stations by using one available wireless channel among a plurality of communication wireless channels instead of the simultaneous reception means. When a signal is transmitted and the address information of a specific group among the receiving side wireless stations is set as the control information in the broadcast incoming control signal, the addressing broadcast that designates the wireless stations receiving the broadcast The mobile communication system according to claim 1, further comprising an incoming call means. 4. A simultaneous reception control from a wireless station requesting a simultaneous reception to a plurality of other wireless stations by using one available wireless channel among a plurality of communication wireless channels instead of the simultaneous reception means. When a signal is transmitted, at the same time, by specifying specific service information among the services of the receiving side wireless stations as control information in the simultaneous reception control signal, the service-specified simultaneous reception is performed to specify the wireless stations to receive the simultaneous reception. The mobile communication system according to claim 1, further comprising means. 5. A broadcast signal including control information for a polling request is transmitted when a wireless station requesting a simultaneous call reception is in a state of maintaining a broadcast communication state with each receiving-side wireless station. By doing so, polling request means for sequentially polling each wireless station and polling for returning a polling response signal when each receiving wireless station receives a broadcast signal including control information of the polling request The mobile communication system according to claim 1, further comprising: a response unit. 6. The polling request control information is provided when the wireless station requesting the simultaneous incoming call is in a state of maintaining a broadcast communication state with each of the receiving side wireless stations instead of the polling request means. By transmitting a broadcast communication signal including, by managing the address of the wireless station to poll at that time,
6. The mobile communication system according to claim 5, further comprising wireless station designation polling request means for sequentially polling only wireless stations of a specific group. 7. When the wireless station requesting the simultaneous incoming call performs the broadcast transmission from the wireless station on the called side while maintaining the polling state with the wireless stations on the called side, the control information of the polling request is sent. When receiving a broadcast communication signal containing a press talk request, the press talk request control signal and the broadcast data are set in the press talk request signal and transmitted to request the press talk to the radio station of the simultaneous call request side. The press talk requesting means for performing the above, and when the radio station on the simultaneous call reception side receives the request for press talk from the radio station on the call reception side, the same information stored in the press talk request signal is stored for each radio station. Press talk reception means for setting the broadcast data and control information for press talk reception to a broadcast communication signal and transmitting by broadcast, and the call receiving side wireless station that requested press talk requires press talk. When releasing, the press talk-off request means for setting each press-talk-off request control information and data to the press talk-off signal and transmitting again, thereby making each wireless station polling state again. The mobile communication system according to claim 5, wherein 8. Instead of the press talk requesting means, the wireless station that has requested the simultaneous incoming call performs broadcast transmission from the wireless station on the receiving side while maintaining the polling state with each wireless station on the receiving side. In this case, when the broadcast signal including the control information of the polling request is received, the control information of the press talk request and the broadcast data are set in the press talk request signal and transmitted, so that the broadcast of the broadcast request side is transmitted. A request for press talk is made to the station, and at that time, by setting the address information of a specific group among the wireless stations of the broadcast destination to the control information of the press talk request signal, the destination of the broadcast communication signal A press talk requesting means for specifying the address is provided, and instead of the press talk receiving means, the radio station of the simultaneous call requesting side receives the press talk request of the call receiving side radio station. In this case, the broadcast data stored in the press talk request signal for each wireless station, the control information of the press talk acceptance, and the address of the specific group of the wireless station to which the press talk request signal is broadcast 8. The mobile communication system according to claim 7, further comprising addressing press talk accepting means for setting the information and the information in a broadcast communication signal and performing the broadcast transmission. 9. A one-to-one communication with a wireless station requesting a simultaneous call while the wireless station requesting a simultaneous call maintains a polling state with each wireless station on the receiving side. When the polling request signal is received, the request for the one-to-one communication is made by transmitting the one-to-one communication request signal including the control information of the one-to-one communication request to the wireless station on the simultaneous incoming call request side when the polling request signal is received. When the one-to-one communication requesting means and the simultaneous call requesting side wireless station accept the request for one-to-one communication of the receiving side wireless station, a broadcast communication signal including control information for receiving one-to-one communication is transmitted. , A one-to-one communication accepting means that shifts to a one-to-one communication state using the wireless channel used for simultaneous incoming call, and a wireless station other than the wireless station that performs the one-to-one communication among the receiving-side wireless stations Return to control waiting for incoming call from station The mobile communication system according to claim 5, characterized in that it comprises a broadcasting releasing means.