JP2007221621A - Radio communication system and group changing method for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that it is necessary to instruct a group change for each original group when trying to add a mobile station belonging to a different group to a group under calling since a method of manually registering grouping in a radio communication system from each of mobile stations to a base station is adopted. <P>SOLUTION: In a radio communication system constituted of a base station and a plurality of mobile stations divided into groups, a first control device of the base station comprises a group code table storing group codes for communicating with the plurality of mobile stations divided into groups, the group code table includes a common group code for communicating with the plurality of mobile stations divided into groups and group codes for individually communicating with the divided groups. When changing a group of at least one of the plurality of mobile stations, the common group code and change information of the group are transmitted to the plurality of mobile stations divided into groups. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a radio communication system and a group change method for a radio communication system, and more particularly, to a radio communication system capable of changing a group of an SCPC (Single Channel Per Carrier) type digital radio system and a group change method for a radio communication system. is there.

  One of the digital radio systems in practical use is the SCPC digital radio system defined by the standard ARIB STD-T61 (Association of Radio Industries and Businesses-T61). This SCPC digital wireless system will be described with reference to FIGS. FIG. 8 is a diagram showing a schematic configuration of the SCPC digital radio system. In FIG. 8, the SCPC digital radio system is a relatively simple system based on simplex press talk communication, in which one radio carrier corresponds to one communication channel. This system includes a base station 101 and a plurality of mobile stations 103-1, 103-2, 103-3,... 103-N and a base station in a communication area 102 (or communication zone) of the base station 101. Communication connection service for direct communication between mobile stations or between mobile stations via a base station, or communication connection service between a mobile station 103-7 outside the communication area 102 and a mobile station 103-6 in the communication area 102 Is a system configured to be performed. In addition, when representing a mobile station, the mobile station 103 is referred to. The mobile station 103 includes a portable wireless device, a portable wireless device, a fixed wireless device, a semi-fixed wireless device, and the like.

  The base station 101 includes a control device 104 that manages the base station, a wireless device 105 including a transmission wireless device Tx and a reception wireless device Rx, and a plurality of command consoles 106-1, 106-2, ... 106-m. It is configured. In addition, when representing a command console, it is referred to as a command console 106.

  Thus, FIG. 9 shows radio carrier frequency allocation permitted to be used in the SCPC digital radio system using the digital radio technology defined by the standard ARIB STD-T61. In FIG. 9, in the uplink direction, that is, in the direction from the mobile station to the base station, a radio carrier f of about 367 MHz to 369 MHz and a radio carrier f1, f2, f3,. Further, in the downstream direction, that is, in the direction from the base station to the mobile station, the wireless carrier F of about 385 MHz to 387 MHz, which is 18 MHz away from the upstream direction of 367 MHz, has a width of 6.25 KHz, and the wireless carriers F1, F2, F3. Is allowed. Therefore, in the communication of the SCPC digital radio system, the frequencies in the uplink direction f1, f2,..., The downlink directions F1, F2,.

  For example, the communication channel between the base station 101 and the mobile station 103-4 and the communication channel between the mobile station 103-1 and the mobile station 103-2 via the base station 101 are downlink radio carriers having different frequencies. A pair wave of F1 and uplink radio carrier f1 is used. Further, in the direct communication between mobile stations between the mobile station 103-7 and the mobile station 103-6 outside the communication area 102, one wave of one radio carrier W1 among the radio carriers W is recognized.

  In the wireless communication system as described above, in order for the mobile station 103 to communicate with the base station 101 or another mobile station 103 within the communication area 102, first, a registration request from the mobile station 103 to the base station 101 is requested. When the registration request is transmitted from the base station 101 to the mobile station 103 in response to this registration request, the mobile station 103 that can be used becomes clear at the base station 101. As a result, a communication connection service between a plurality of registered mobile stations 103 and the base station 101 or between mobile stations via the base station 103 is performed.

  In such a mobile station registration type radio communication system, the base station 101 and all registered mobile stations 103 can be used. However, for the management of the radio communication system, the mobile stations 103 are grouped according to a predetermined group. Management is done in groups. Table 1 shows a mobile station group table.

表１において、グループ名は、例えば、図８に示すグループＡ、Ｂ、・・・を示し、移動局番号は、そのグループに登録されている移動局１０３を示している。即ち、点線で囲まれたグループＡは、移動局１０３−１、１０３−２、・・・１０３−Ｎのグループで構成され、点線で囲まれたグループＢは、移動局１０３−４、１０３−５、１０３−６、・・・のグループで構成されている。

In Table 1, the group name indicates, for example, the groups A, B,... Shown in FIG. 8, and the mobile station number indicates the mobile station 103 registered in the group. That is, group A surrounded by dotted lines is composed of groups of mobile stations 103-1, 103-2,... 103-N, and group B surrounded by dotted lines is mobile stations 103-4, 103-. 5, 103-6,...

  As shown in FIG. 10, the radio channel used in this SCPC digital radio system is composed of communication channels SC (Service Channel) 1, SC2,... And a synchronous burst SB0 (Synchronous Burst 0) 1, SB02, SB03. Has been. In FIG. 10, the synchronization burst SB0 is shown with three repetitions. However, the synchronization burst SB0 is not limited to this, and may be composed of one, two, four,. FIG. 11 shows signal formats of the communication channel SC and the synchronization burst SB0. In FIG. 11, LB + R is a linearizer preamble and guard time for burst transient response, Pa and Pb are preambles, TCH is a traffic channel, RI (also referred to as RICH) is a radio information channel, SW is a synchronization word, G is a guard time. Numbers represent symbols. Each region is called a function channel.

  The communication channel SC is a bidirectional channel used by a user for communication, and is represented by a traffic channel (TCH: Traffic Channel) and a radio information channel (RICH: Radio Information Channel, RI in FIG. 8) as functional channels. It consists of). The synchronization burst SB0 is a burst data for synchronization exchanged before TCH during communication in the assigned radio channel, and is indicated by a parameter information channel (PICH: Parameter Information Channel, PI in FIG. 8) as a functional channel. And RICH.

  The radio information channel RICH is arranged on all radio channels of SC and SB0 and is used to transfer channel information such as radio channel structure, operation mode, communication mode, etc., and to transfer user information as necessary. Also used. The traffic channel TCH is a bidirectional channel for transferring user information, and voice information and the like are transferred. The parameter information channel PICH is a functional channel for transferring user-specific information or the like accompanying the synchronization burst.

  When communication is performed in the wireless system of FIG. 8, the communication start side turns on the press switch, and at the same time, establishes synchronization on the communication reception side by continuously transmitting SB0 several times, and then performs a voice call by the SC. . That is, as shown in FIG. 10, the synchronization burst SB0 for synchronization is transmitted three times, for example, SB01, SB02, and SB03, and then the communication channel SC is sequentially transmitted in the order of SC1, SC2,. Note that one section of SB0 and SC is, for example, 40 ms as shown in FIG.

  The operation of the SCPC digital radio system configured as described above will be described with reference to FIG. In FIG. 12, a case where command console 106-2 makes a call with mobile stations 103-N, 103-3, and 103-5 will be described. First, in the idle state (step 1201), the radio apparatus 105 of the base station 101 always sends an empty line signal from the transmission radio Tx, and the mobile station 103 located in the communication area 102 is synchronized. It is a state that has been. In this state, for example, the case where the command console 106-2 performs simultaneous communication with the mobile stations 103 belonging to the group A will be described. In FIG. 12, only the mobile stations 103-N, 103-3, and 103-5 are shown for simplicity of explanation, but the same applies to other mobile stations. The command console 106-2 designates the group A and makes a communication call to the mobile station 103 via the control device 104 and the wireless device 105 of the base station 101 (step 1202). When receiving the designation of group A on command console 106-2, control device 104 of base station 101 represents group A using, for example, synchronization burst SB0 and communication channel SC RICH (shown in FIG. 11). A code, for example, 00001 is transmitted to each of the mobile stations 103-N, 103-3, and 103-5 (step 1203).

The mobile station stations 103-N, 103-3, and 103-5 that have received the code 00001 representing the group A determine whether their mobile stations are the group A (steps 1204, 1205, and 1206). The reason for the determination is that the SCPC digital radio system shown in FIG. 8 communicates using the pair wave of the radio frequencies f1 and F1 in the communication area 102 as described above. This is because all the mobile stations 103 can receive this communication. As a result of the determination, the mobile stations 103-N and 103-3 are determined to be in the group A, and the sound reproduction function is turned on. Accordingly, voice transmission from the command console 106-2 (step 1207) is transmitted from the base station 101 to the mobile stations 103-N and 103-3 on the communication channel SC, for example, TCH (step 1208) and reproduced. . In addition, sound reception (steps 1209 and 1210) is displayed on the display unit of the wireless device. However, since the mobile station 103-5 is a group B (a group different from the group A), the mobile station 103-5 does not reproduce the sound and displays, for example, busy on the display unit of the wireless device (step 1211). As a result, the mobile stations 103-N and 103-3 in group A can hear the simultaneous notification from the command console 106-2.
The mobile station 103-5 cannot hear the simultaneous report. In the above example, step 1202 and step 1207 have been described as separate steps, but step 1202 and step 1207 may be the same step. That is, a group can be specified by the RICH of the communication channel SC shown in FIG. 11 and the voice can be simultaneously transmitted by the TCH of the communication channel SC shown in FIG.

  In the system as described above, the grouping for communication is performed by manually registering each mobile station with the base station, and in order to organize the group or change the belonging group, for example, the base station The administrator of each mobile station calls each mobile station, instructs each mobile station to change the group by voice call, etc., and the person in charge of each mobile station operates the operation unit of the mobile station and changes it manually. . In addition, since mobile stations in the same base station use the same radio carrier, communication other than the group in which the call is in progress (the selected group) is busy. For this reason, when trying to organize mobile stations belonging to different groups into a group that is talking (selected group), it is necessary to instruct the group change for each original group. The host device, such as a command console, performs complicated organization of groups and changes, such as the fact that each mobile station must always hold information on which group is currently selected. Therefore, it is desired to realize a wireless communication system that can easily change a group.

JP 2001-145150 A

  The grouping in the wireless communication system is a method of manually registering in the base station from each mobile station, and when trying to organize mobile stations belonging to different groups into a group that is in a call, A group change instruction must be given for each original group, and the organization and change of the group becomes complicated.

  An object of the present invention is to provide a radio communication system and a group change method for a radio communication system that can easily change an affiliated group.

  Another object of the present invention is to provide a radio communication system and a group change method for a radio communication system that can notify the change of the belonging group.

  Still another object of the present invention is to provide a radio communication system and a group change method for a radio communication system that can change an affiliated group according to a command from a base station.

  The present invention is a radio communication system comprising a plurality of mobile stations grouped with a base station, wherein the base station has a radio apparatus and a first control device for controlling the radio apparatus, Each of the plurality of mobile stations includes a transmission unit, a reception unit, a second control unit that controls the transmission unit and the reception unit, and the first control device of the base station includes a first storage unit The first storage unit includes a group code table storing a group code that can communicate with the plurality of grouped mobile stations, and the group code table includes a plurality of grouped groups. A group of at least one mobile station of the plurality of mobile stations, having a common group code capable of communicating with the mobile station and a group code capable of individually communicating with the grouped group. When changing, the first control unit is configured to change information of the common group code and the group to transmit to a plurality of mobile stations which are the grouping.

  In the wireless communication system of the present invention, the second control unit of the grouped mobile stations has a second storage unit, and the ID and the user belong to the second storage unit. A plurality of grouped mobile stations that receive the common group code and the group change information, and the second control unit includes the common group code and the group code. The group change information is decoded, and the ID of the group code stored in the second storage unit is compared with the group code to which the user belongs to change the information to a predetermined group code.

  Further, in the wireless communication system of the present invention, the mobile station that has changed the ID of the group code stored in the second storage unit and the group code to which the user belongs to a predetermined group code is A later group code is configured to be transmitted to the base station.

  In the wireless communication system of the present invention, the wireless communication system is an SCPC digital wireless system including a synchronization burst and a communication channel, and the common group code includes the synchronization burst and the communication channel. The group change information is transmitted through a predetermined functional channel, and the group change information is transmitted through a functional channel different from the predetermined functional channel of the communication channel.

  Further, the present invention provides a radio communication system comprising a plurality of mobile stations grouped with a base station, wherein the base station has the plurality of grouped mobile stations with respect to the plurality of grouped mobile stations. A step of transmitting a common group code that can communicate with the mobile station number and a group code indicating a group after movement, and each mobile station of the grouped mobile stations includes the common group code The mobile station that has received the common group code determines the number of the mobile station whose group is to be changed, and if the mobile station number matches based on the determination result, the group after the movement It is comprised from the step which changes the own group code based on the group code which shows.

  In the group change method of the wireless communication system of the present invention, when the mobile station changes its own group code, the changed group code is transmitted to the base station.

  As described above, according to the present invention, it is possible to realize a radio communication system and a group change method for a radio communication system that can easily change an affiliated group. In addition, each mobile station can be notified of group changes, and the mobile station operator can individually set the group affiliation. The mobile station can be individually selected and the group to which the mobile station belongs can be changed.

  An embodiment of the present invention will be described with reference to FIGS. In the embodiment of the present invention, an example of the SCPC digital radio system defined by the standard ARIB STD-T61 will be described. However, the present invention is not limited to this, and it can be applied to other radio communication systems. . FIG. 1 is a system diagram illustrating a schematic configuration of the present invention. 1 differs from FIG. 8 in that the mobile station 103-N has moved from group A to group B. FIG. In addition, the same code | symbol is attached | subjected to the same thing as FIG. In FIG. 1, mobile stations 103 belonging to group A and group B are as shown in the mobile station group table shown in Table 2.

表２において、グループＡは、移動局１０３−１、１０３−２、１０３−３、・・・が所属し、グループＢは、移動局１０３−４、１０３−５、１０３−６、・・・１０３−Ｎが所属することを示している。以下、移動局１０３−Ｎをグループ変更する方法について詳しく説明する。

In Table 2, mobile stations 103-1, 103-2, 103-3, ... belong to group A, and group B belongs to mobile stations 103-4, 103-5, 103-6, .... It shows that 103-N belongs. Hereinafter, a method for changing the group of the mobile station 103-N will be described in detail.

  FIG. 2 is a block diagram showing a schematic configuration of the base station 101 shown in FIG. The base station 101 includes a control device 104 that manages the base station, a wireless device 105 including a transmission wireless device Tx and a reception wireless device Rx, and a plurality of command consoles 106-1, 106-2, ... 106-m. It is configured. In addition, when representing a command console, it is referred to as a command console 106. In FIG. 2, the control device 104 includes a processing device 201 and a storage unit 202. The processing device 201 manages the base station 101 and provides a communication connection service between the base station, the mobile station, and the mobile station. The wireless device 105 includes a transmitting wireless device Tx and a receiving wireless device Rx. The command console 106 includes an operation unit 203 and a display unit 204. In FIG. 2, only one command console is shown, but a plurality of command consoles may be provided as necessary as shown in FIG.

  Next, FIG. 3 shows a block diagram of a specific example of the mobile stations 103-1, 103-2, 103-3, 103-4,... 103-N. When the mobile stations are portable mobile stations 103-1, 103-5, 103-N,..., Vehicle-mounted mobile stations 103-2, 103-3 mounted on taxis or truck vehicles. , 103-4, etc., there are various types of mobile stations 103. The configuration is almost the same as that shown in FIG. 3, and will be described using the mobile station shown in FIG. 3 as a representative. The mobile station shown in FIG. 3 is a radio communication apparatus using, for example, a pair wave of an uplink radio carrier f1 and a downlink radio carrier F1.

  In FIG. 3, 301 is an antenna for performing transmission / reception with the base station 101, 302 is a changeover switch for switching transmission / reception, 303 is a reception unit, 304 is a reception signal processing unit, 305 is a speaker, Reference numeral 306 denotes a control unit, 307 denotes a storage unit, 308 denotes a display unit, 309 denotes an operation unit, 310 denotes a microphone, 311 denotes a transmission signal processing unit, and 312 denotes a transmission unit.

  First, in each mobile station 103, the operator of each mobile station 103 operates the operation unit 309 to select group A or group B, and registers them in the base station 101. As a result, in the storage unit of the base station 101, groups A and B are separately registered as in the mobile station group table shown in Table 1. That is, this is the state shown in FIG. The case where the mobile station 103-N is changed from group A to group B in this state will be described with reference to the operation explanatory diagram of FIG. In FIG. 7, the case where the command console 106-2 changes the group to which the mobile station 103-N belongs will be described. First, in the idle state (step 701), the radio apparatus 105 of the base station 101 always sends an empty line signal from the transmission radio Tx, and the mobile station 103 located in the communication area 102 is synchronized. It is a state that has been. In this state, the command console 106-2 selects a mobile station whose group is to be changed (step 702). For example, by operating the operation unit 203 shown in FIG. 2, the base station group table shown in Table 1 stored in the storage unit 202 is called and displayed on the display unit 204. Then, the operator of the console 106 selects a mobile station whose group is to be changed, for example, the mobile station 103-N, and operates the operation unit 203 to transmit a change request from the group A to the group B to the control unit 104. (Step 703).

  Receiving the change notification request for the mobile station 103-N, the control device 104 generates a signal for group switching in the processing device 201 and transmits it to the mobile station 103 (step 704). This will be described with reference to FIGS. As described above, in the base station 101, for communication with the mobile station 103, as shown in FIG. 10, a radio channel composed of synchronization bursts SB01, SB02, SB03 and communication channels SC1, SC2,. Explained what is done. Further, it has been described that the synchronization burst SB0 and the communication channel SC have the communication format configuration shown in FIG. Accordingly, the processing device 201 first adds the group code and group change notification information to the RI (radio information channel, also referred to as RICH) of the synchronization burst SB0 and / or the communication channel SC and transmits it to each mobile station 103. (Step 704). FIG. 4 shows the contents of the RI of the synchronization burst SB0 and / or the communication channel SC shown in FIG. In FIG. 4, 401 indicates an undefined area, and 402 indicates an M (communication mode identification) area. In this embodiment, a group code is assigned to the undefined area 401. For example, the group codes shown in Table 3 are inserted as the group codes.

表３において、グループ名の共通グループは、グループコード０００００が割り当てられる。この共通グループとは、基地局１０１に登録されている全ての移動局１０３に受信できるグループコードである。また、グループＡは、グループコード００００１が、グループＢは、グループコード０００１０が割当てられるというように各グループ毎にグループコードが付される。このグループコードテーブルは、例えば、基地局１０１の記憶部２０２に記憶され、操作卓１０６からの指示で、適宜添付され送信される。従って、例えば、グループＡの移動局１０３に一斉通報を送信したい場合は、グループコード００００１を図４に示すＲＩ領域の領域４０１に添付すると、グループＡの移動局１０３−１、１０３−２、１０３−３、・・・１０３−Ｎに一斉通報が送信される。なお、上記実施例では、グループコードテーブルは、基地局１０１の記憶部２０２に記憶されているとして説明したが、この記憶部２０２は、例えば、指令卓１０６に具えることもできる。また、指令卓１０６と制御装置１０４を一体に設けることもでき、システム構成に応じて適宜構成を変更できることはいうまでもない。また、グループコードテーブルは、記憶部２０２の中に形成されている記憶内容を単にグループコードテーブルと表現したにすぎず、グループコード記憶部を意味するものである。

In Table 3, a group code 00000 is assigned to a common group with a group name. This common group is a group code that can be received by all mobile stations 103 registered in the base station 101. Further, a group code is assigned to each group such that group A is assigned group code 00001 and group B is assigned group code 00010. This group code table is stored in, for example, the storage unit 202 of the base station 101, and is appropriately attached and transmitted in accordance with an instruction from the console 106. Therefore, for example, when it is desired to send a broadcast message to the mobile station 103 of group A, if the group code 00001 is attached to the area 401 of the RI area shown in FIG. 4, the mobile stations 103-1, 103-2, 103 of group A are attached. -3, ... 103-N, a simultaneous report is transmitted. In the above embodiment, the group code table is described as being stored in the storage unit 202 of the base station 101. However, the storage unit 202 may be included in the command console 106, for example. It is needless to say that the command console 106 and the control device 104 can be provided integrally, and the configuration can be appropriately changed according to the system configuration. Further, the group code table simply represents the storage contents formed in the storage unit 202 as a group code table, and means a group code storage unit.

  Now, when the mobile station 103-N is changed from group A to group B, because it is a change to a different group, the group code of the common group so that all mobile stations 103 registered in the base station 101 can receive it. 00000 is attached to the area 401 of the RI area shown in FIG. 4 and transmitted. As a result, all mobile stations 103 registered in the base station 101 can receive this communication. At the same time, a message indicating that this communication is a group change notification is transmitted as data. Here, for example, in the M (communication mode identification) area 402 in FIG. 4, a signal for identifying whether the signal to be transmitted is data or voice is transmitted. The details are shown in FIG. In FIG. 5, for example, 011 (data transmission) indicating data is inserted in the undefined area 501 of the M area 402 in this case. Then, for example, a message “group change” is inserted as data into the message identification (group code change) 600 of TCH shown in FIG.

  The mobile stations 103-N, 103-3, and 103-5 that have received the group change information in step 704 perform group determination (steps 705, 706, and 707), respectively. This group determination is performed by the control unit 306 of the mobile station 103, for example. That is, for example, each group code table shown in Table 3 is stored in the storage unit 307 of the control unit 306. Compared with the group code in the received signal, what is the transmitted group code? judge. In this embodiment, since the group code 00000 is transmitted, it is recognized as a common group, the data transmission 011 of the M area 402 shown in FIG. 5 is decoded, and the message identification (see FIG. 6) of TCH shown in FIG. (Group code change) 600 is read, and the message “Change belonging group” is displayed on the display unit 308 (steps 708, 709, and 710). Needless to say, the transmission of the group code and the message is not limited to the above-described function channel, and various changes can be made. In addition, when transmitting data or the like, the certainty of reception is improved by transmitting a plurality of times using not only one of the communication channels SC, SC1, but also a plurality of communication channels SC1, SC2,. Needless to say.

  Further, the processing device 201 of the control device 104 of the base station receives the mobile station number, for example, the mobile station number of the mobile station 103-N, for example, 103-N or ID No. on the TCH of the communication channels SC1, SC2,. . Then, the group code after the change, for example, the group code 0010 indicating the group B is attached and transmitted (step 711). More specifically, FIG. 6 shows the contents of the TCH (traffic channel) of the communication channel SC of the functional channel shown in FIG. 11, and moves to change the group to an area 601 that is an unused area of this TCH. The changed group code 0 010 is inserted into the station number, for example, the mobile station 103-N and the area 602, and transmitted.

  The mobile station 103 (all mobile stations) that has received this TCH information (step 711) decodes the received TCH by the control unit 306 and stores its mobile station number (stored in its storage unit 307). Or ID). For example, Table 4 shows its own information table stored in the storage unit 307 of the mobile station 103-N.

表４において、移動局１０３−Ｎの移動局Ｎｏ．またはＩＤＮｏ．は、１０３−Ｎであり、所属グループは、グループＢ（グループコード：０００１０）であることを示す。なお、表４は、移動局１０３−Ｎの情報のみを示しているが、全ての移動局１０３は、自己の移動局Ｎｏ．またはＩＤＮｏ．および所属グループ（グループコード）を記憶した自己の情報テーブルを所有している。従って、各移動局１０３は、グループ変更する移動局の番号を受信して個別番号判定を行う（ステップ７１２、７１３、７１４）。判定の結果、移動局１０３−Ｎは、自分の移動局番号１０３−Ｎと一致するので、自分のグループコード（グループＢ）を、例えば、グループＡのグループコード００００１に修正する（ステップ７１５）。この修正した自己の情報テーブルを表５に示す。

In Table 4, the mobile station No. of the mobile station 103-N. Or ID No. Is 103-N, and the belonging group is group B (group code: 00010). Table 4 shows only information on the mobile station 103-N, but all mobile stations 103 have their own mobile station numbers. Or ID No. And own information table storing group (group code). Therefore, each mobile station 103 receives the number of the mobile station whose group is to be changed and performs individual number determination (steps 712, 713, and 714). As a result of the determination, since the mobile station 103-N matches the mobile station number 103-N of itself, the mobile station 103-N corrects its group code (group B) to, for example, the group code 00001 of group A (step 715). The corrected self information table is shown in Table 5.

表５において、所属グループがグループＡに変更されている。この修正は、例えば、記憶部３０７に記憶している表４に示す自己の情報テーブルの所属グループのグループＢ（グループコード：０００１０）を表５のように所属グループのグループＡ（グループコード：００００１）に変更することで達成できる。

In Table 5, the affiliation group is changed to group A. For example, the correction is performed by changing the group B (group code: 0010) of the group belonging to the information table shown in Table 4 stored in the storage unit 307 to the group A (group code: 00001) of the group as shown in Table 5. It can be achieved by changing to).

  The mobile station 103-N that has changed the group code transmits information notifying the change to the control device 104 of the base station 101 (step 716). When receiving the group code change information from the mobile station 103 -N, the control device 104 of the base station 101 rewrites the contents of the base station group table stored in the storage unit 202. That is, the state of Table 1 is changed to the state of Table 2. Accordingly, the operator of the base station 101 can confirm that the group of the mobile station 103-N has been changed by reading the base station group table in Table 2 and displaying it on the display unit 204 (step 718). If the mobile station 103-N does not need to transmit the group code change to the base station 101, steps 716, 717, and 718 are unnecessary.

  In the above embodiment, the group change request information transmission (step 704) and the changed mobile station designation (step 711) have been described as being transmitted separately, but they may be transmitted simultaneously. In this case, for example, each of the mobile stations 103-N, 103-3, and 103-5 analyzes the contents of the transmitted RICH and TCH, temporarily stores them in the respective storage units 307, and performs group determination (step 705, 706, 707), message display (steps 708, 709, 710), individual number determination (steps 712, 713, 714), and group change (step 715) may be performed sequentially.

  Moreover, although the case where group change information, mobile station designation, and group designation after change are transmitted by TCH has been described, the present invention is not limited to these, and it is also possible to send in another area (different functional channel). Needless to say. In the present embodiment, the mobile station automatically changes its own group based on the group change information. However, information indicating the change is displayed on the display unit 308 or changed from the speaker. Needless to say, the operator of the mobile station 103 can change the group by operating the operation unit 309.

  Although the present invention has been described in detail above, the present invention is not limited to the embodiments of the wireless communication system and the group changing method of the wireless communication system described herein, and the wireless communication system and the wireless other than those described above. Needless to say, the present invention can be widely applied to the group change method of the communication system.

It is a figure which shows the radio | wireless communications system for describing one Example of this invention. The block diagram of schematic structure of the base station used by this invention is shown. 1 is a block diagram of a schematic configuration of a mobile station used in the present invention. It is a figure which shows one Example of RICH used by this invention. It is a figure which shows one Example of M area | region used by this invention. It is a figure which shows one Example of TCH used by this invention. It is a figure for demonstrating operation | movement of this invention. It is a figure which shows an example of the conventional radio | wireless communications system. It is a figure which shows the relationship of the radio | wireless carrier frequency used with a radio | wireless communications system. It is a figure for demonstrating the structure of the radio channel used with a radio | wireless communications system. It is a figure which shows the signal format of the radio channel shown in FIG. It is a figure for demonstrating operation | movement of the conventional radio | wireless communications system.

Explanation of symbols

  101: base station, 102: communication area, 103: mobile station, 104: control device, 105: wireless device, 106: command console, 201: processing device, 202, 307: storage unit, 203, 309: operation unit, 204 308: Display unit 301: Antenna 302: Changeover switch 303: Reception unit 304: Reception signal processing unit 305: Speaker 306: Control unit 310: Microphone 311: Transmission signal processing unit 312: Transmission Department.

Claims (5)

  In a radio communication system comprising a plurality of mobile stations grouped with a base station, the base station has a radio apparatus and a first control device for controlling the radio apparatus, and the plurality of grouped mobile stations Each has a transmission unit, a reception unit and a second control unit for controlling the transmission unit and the reception unit, and the first control device of the base station has a first storage unit, The first storage unit includes a group code table storing a group code capable of communicating with the plurality of grouped mobile stations, and the group code table communicates with the plurality of grouped mobile stations. A common group code and a group code that can be individually communicated with the grouped group, and changing a group of at least one of the plurality of mobile stations If, the first control device, radio communication system and transmits to the common group code and a plurality of mobile stations change information is the grouping of the group.   2. The wireless communication system according to claim 1, wherein the second control unit of the plurality of grouped mobile stations includes a second storage unit, and the ID and the user belong to the second storage unit. A plurality of grouped mobile stations that receive the common group code and the group change information, and the second control unit includes the common group code and the group code. A wireless communication system characterized by decoding group change information, comparing the ID of the group code stored in the second storage unit with the group code to which the user belongs and changing the group code to a predetermined group code .   3. The wireless communication system according to claim 2, wherein the mobile station that has changed the ID of the group code stored in the second storage unit and the group code to which the user belongs to a predetermined group code is the change A wireless communication system, wherein a later group code is transmitted to the base station.   2. The wireless communication system according to claim 1, wherein the wireless communication system is an SCPC digital wireless system including a synchronization burst and a communication channel, and the common group code includes the synchronization burst and the communication channel. A wireless communication system, wherein the group change information is transmitted using a function channel different from the predetermined function channel of the communication channel.   In a wireless communication system comprising a plurality of mobile stations grouped with a base station, the base station communicates with the plurality of grouped mobile stations with respect to the plurality of grouped mobile stations. A step of transmitting a group code indicating a group number and a group after movement, and a step of receiving each of the plurality of grouped mobile stations receiving the common group code; The mobile station that has received the common group code determines the number of the mobile station that changes the group, and if the mobile station number matches based on the determination result, the mobile station is based on the group code indicating the group after the movement. Group of the wireless communication system, characterized in that it comprises a step of changing its own group code. How to change.

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