CN101557565B - Switching method of terminal between reverse traffic channels and trunking communication system - Google Patents
Switching method of terminal between reverse traffic channels and trunking communication systemDownload PDFInfo
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Abstract
Translated fromChinese
Description
Translated fromChinese技术领域technical field
本发明涉及通信领域，特别涉及一种集群通信系统组呼业务中终端在反向业务信道间的切换方法及集群通信系统。The invention relates to the communication field, in particular to a method for switching terminals between reverse service channels in a group call service of a trunking communication system and a trunking communication system.
背景技术Background technique
数字集群通信系统中的传统式组呼业务，必须支持对小范围内大容量群组(一个群组包含成百上千的用户，且集中在小范围扇区下)的群组呼叫能力，因此传统式组呼业务必须采用扇区下共享反向业务信道的方法。The traditional group call service in the digital trunking communication system must support the group call capability for large-capacity groups in a small area (a group contains hundreds or thousands of users, and is concentrated in a small-scale sector), so The traditional group call service must adopt the method of sharing the reverse service channel under the sector.
根据集群呼叫的半双工业务特征，在一个集群呼叫过程中，同一时间只有一个用户能够获得话权，成为讲话方，其它用户则为接听方。讲话方在反向链路上能发送语音和信令；而接听方在反向链路上只能发送信令，不能发送语音。According to the half-duplex service characteristics of the trunking call, only one user can obtain the right to speak at the same time during a trunking call, and become the speaking party, and other users are the receiving parties. The speaking party can send voice and signaling on the reverse link; the receiving party can only send signaling but not voice on the reverse link.
因此，基于码分多址技术(CDMA)的数字集群通信系统的传统式组呼业务若要实现反向业务信道的共享，则需要采用的方法为：一条反向专用业务信道和一条或多条反向共享业务信道。反向专用业务信道供扇区下可能存在的讲话方传送反向语音和信令；而反向共享业务信道供扇区下该群组的所有接听方发送反向信令。Therefore, if the traditional group call service of the digital trunking communication system based on code division multiple access technology (CDMA) is to realize the sharing of the reverse traffic channel, the method that needs to be adopted is: a reverse dedicated traffic channel and one or more Reverse Shared Traffic Channel. The reverse dedicated traffic channel is used for possible speaking parties under the sector to transmit reverse voice and signaling; and the reverse shared traffic channel is used for all listeners of the group under the sector to send reverse signaling.
由此带来的问题是，由于终端在任何时刻只能处于一种状态，且作为讲话方或者接听方时，传送反向信息所采用的反向业务信道不同，需要解决终端在两种不同状态时在反向业务信道间切换的问题。The problem brought about by this is that since the terminal can only be in one state at any time, and when it is the speaker or the receiver, the reverse traffic channel used to transmit the reverse information is different, and it is necessary to solve the problem that the terminal is in two different states. When switching between reverse traffic channels.
专利PCT/CN2005/001400提供了一种CDMA系统组呼业务中终端在反向业务信道间切换的方法，所述方法中，起呼终端接收到系统的信息后，会首先建立反向专用业务信道，获得话权，成为说终端，这里存在的问题是，若此时该终端是迟后接入(例如，该终端因不在服务区或者该终端在其他更高优先级的呼叫中等)的话，在反向专用业务信道上与网络侧进行信令交互就会对真正的讲话方产生影响，严重情况下会导致讲话方的话音中断，即会引起产生多个讲话方的情况，这个是集群通信中不能允许的。Patent PCT/CN2005/001400 provides a method for a terminal to switch between reverse traffic channels in a group call service of a CDMA system. In the method, after receiving system information, the calling terminal will first establish a reverse dedicated traffic channel , obtain the right to speak, and become a speaking terminal. The problem here is that if the terminal is late accessing at this time (for example, the terminal is not in the service area or the terminal is in the middle of other higher priority calls, etc.), the The signaling interaction with the network side on the reverse dedicated service channel will affect the real speaker. In severe cases, the voice of the speaker will be interrupted, that is, it will cause multiple speakers. This is the case in trunking communication. Not allowed.
发明内容Contents of the invention
本发明所要解决的技术问题是，提供一种集群通信系统组呼业务中终端在反向业务信道间的切换方法及集群通信系统，本发明使得在传统式组呼业务中，群组的终端可以在状态变化时快速地转到相应的反向业务信道上。The technical problem to be solved by the present invention is to provide a method for switching terminals between reverse service channels in the group call service of the trunking communication system and the trunking communication system. The present invention enables the terminals in the group to Quickly switch to the corresponding reverse traffic channel when the state changes.
本发明公开了一种组呼业务中终端在反向业务信道间的切换方法，处于组呼中的终端接收到系统的话权指示消息后，判断是否得到了系统的话权授权，若是，则成为讲话方，切换到反向专用业务信道；否则，成为接听方，切换到反向共享业务信道。The invention discloses a method for switching terminals between reverse service channels in a group call service. After a terminal in a group call receives a system speaking right indication message, it judges whether it has been authorized by the system speaking right, and if so, it becomes a speaking channel. party, switch to the reverse dedicated traffic channel; otherwise, become the receiving party, switch to the reverse shared traffic channel.
所述话权指示消息携带有构造反向专用业务信道和反向共享业务信道所需的信息。The speaking right indication message carries information required for constructing a reverse dedicated traffic channel and a reverse shared traffic channel.
若所述终端是以主叫的身份接入到组呼中的，则所述话权指示消息由所述系统主动下发给终端；若所述终端已处于组呼中，则所述终端需要通过向所述系统发送话权申请请求来获得话权授权。If the terminal accesses the group call as a calling party, the system actively sends the speaking right indication message to the terminal; if the terminal is already in the group call, the terminal needs to The speaking right authorization is obtained by sending a speaking right application request to the system.
所述终端通过如下方法切换到反向专用业务信道：The terminal is switched to the reverse dedicated traffic channel by the following method:
步骤A：根据接收到的话权指示消息中携带的构造反向专用业务信道所需的信息，构造反向专用业务信道的长码掩码和沃尔什码；Step A: Construct the long code mask and the Walsh code of the reverse dedicated traffic channel according to the information required for constructing the reverse dedicated traffic channel carried in the received right-of-speak indication message;
步骤B：将反向业务信道的长码掩码和沃尔什码分别配置成所述构造得到的反向专用业务信道的长码掩码和沃尔什码。Step B: Configure the long code mask and Walsh code of the reverse traffic channel as the long code mask and Walsh code of the constructed reverse dedicated traffic channel respectively.
所述终端通过如下方法切换到反向共享业务信道：The terminal is switched to the reverse shared traffic channel by the following method:
步骤a：根据接收到的话权指示消息中携带的构造反向共享业务信道所需的信息，构造反向共享业务信道的长码掩码和沃尔什码；Step a: Construct the long code mask and the Walsh code of the reverse shared traffic channel according to the information required for constructing the reverse shared traffic channel carried in the received right to speak indication message;
步骤b：将反向业务信道的长码掩码和沃尔什码分别配置成所述构造得到的反向共享业务信道的长码掩码和沃尔什码。Step b: Configure the long code mask and Walsh code of the reverse traffic channel respectively as the long code mask and Walsh code of the constructed reverse shared traffic channel.
所述方法中，若群组内的终端因迟后而未能及时接入所述系统的组呼中，则所述终端向所述系统发起呼叫时，所述终端以被叫的身份接入所述组呼中。In the method, if the terminal in the group fails to access the group call of the system in time due to delay, when the terminal initiates a call to the system, the terminal accesses the system as the called party. The group call is in progress.
本发明进一步公开了一种集群通信系统，包括移动终端和集群调度服务器(PDS)，所述The present invention further discloses a cluster communication system, including a mobile terminal and a cluster scheduling server (PDS), the
移动终端用于发起呼叫请求、发起话权申请、发起话权释放；用于在接收到话权指示消息后判断是否获得话权授权；在获得话权授权时，成为讲话方，并切换到反向专用业务信道；在主动释放话权、话权被授权给其他用户或者接收到话权是否消息时，成为接听方，并切换到反向共享业务信道。The mobile terminal is used to initiate a call request, initiate a speaking right application, and initiate a speaking right release; it is used to judge whether to obtain the speaking right authorization after receiving the speaking right indication message; To the dedicated traffic channel; when the speaking right is released actively, the speaking right is authorized to other users, or the message of whether the speaking right is received or not, it becomes the receiver and switches to the reverse shared traffic channel.
集群调度服务器用于在接收到移动终端的呼叫请求后，发起呼叫建立过程；用于在接收到移动终端的话权申请时，分配话权并发起话权指示消息；用于确认话权释放或者发起话权释放。The cluster scheduling server is used to initiate the call establishment process after receiving the call request from the mobile terminal; to allocate the speaking right and initiate a speaking right indication message when receiving the speaking right application from the mobile terminal; to confirm the release of the speaking right or to initiate The right to speak is released.
所述移动终端还用于在成为讲话方后，根据接收到的话权指示消息中携带的构造反向专用业务信道所需的信息，构造反向专用业务信道的长码掩码和沃尔什码，并将反向业务信道的长码掩码和沃尔什码分别配置成所述构造的反向专用业务信道的长码掩码和沃尔什码；用于在成为接听方后，根据接收到的话权指示消息中携带的构造反向共享业务信道所需的信息，构造反向共享业务信道的长码掩码和沃尔什码，并将反向业务信道的长码掩码和沃尔什码分别配置成所述构造的反向共享业务信道的长码掩码和沃尔什码。The mobile terminal is also used to construct the long code mask and the Walsh code of the reverse dedicated traffic channel according to the information required for constructing the reverse dedicated traffic channel carried in the received right-of-speak indication message after becoming the speaker , and the long code mask and the Walsh code of the reverse traffic channel are respectively configured as the long code mask and the Walsh code of the reverse dedicated traffic channel of the construction; The information required for constructing the reverse shared traffic channel carried in the right to speak indication message, constructs the long code mask and the Walsh code of the reverse shared traffic channel, and uses the long code mask and the Walsh code of the reverse traffic channel The even codes are respectively configured as the long code mask and the Walsh code of the constructed reverse shared traffic channel.
本发明通过先确认再切换的方法，避免了引起产生多个讲话方的情况，本发明使得在传统式组呼业务中，群组的终端可以在状态变化时快速地转到相应的反向业务信道上。The present invention avoids the occurrence of multiple speaking parties through the method of confirming first and then switching. The present invention enables the terminals of the group to quickly switch to the corresponding reverse service in the traditional group call service when the state changes. on the channel.
附图说明Description of drawings
图1是本发明所述集群通信系统的结构框图；Fig. 1 is a block diagram of the trunking communication system of the present invention;
图2是本发明所述方法的流程图；Fig. 2 is a flowchart of the method of the present invention;
图3是本发明所述方法的实施例一的流程示意图；Fig. 3 is a schematic flow chart of Embodiment 1 of the method of the present invention;
图4是本发明所述方法的实施例二的流程示意图；Fig. 4 is a schematic flow diagram of Embodiment 2 of the method of the present invention;
图5是本发明所述方法的实施例三的流程示意图；Fig. 5 is a schematic flow chart of Embodiment 3 of the method of the present invention;
图6是本发明所述方法的实施例四的流程示意图；6 is a schematic flow diagram of Embodiment 4 of the method of the present invention;
图7是本发明所述方法的实施例五的流程示意图；7 is a schematic flow diagram of Embodiment 5 of the method of the present invention;
图8是本发明所述方法的实施例六的流程示意图；Fig. 8 is a schematic flow chart of Embodiment 6 of the method of the present invention;
图9是本发明所述方法的实施例七的流程示意图；Fig. 9 is a schematic flow chart of Embodiment 7 of the method of the present invention;
图10是本发明所述方法的实施例八的流程示意图。Fig. 10 is a schematic flowchart of Embodiment 8 of the method of the present invention.
具体实施方式Detailed ways
以下结合附图和优选实施例，对本发明做进一步详细说明。The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments.
如图1所示，是本发明所述集群通信系统的结构框图，包括移动终端和集群调度服务器，其中，As shown in Figure 1, it is a structural block diagram of the cluster communication system of the present invention, including a mobile terminal and a cluster scheduling server, wherein,
移动终端用于发起呼叫请求、发起话权申请、发起话权释放；用于在接收到话权指示消息后判断是否获得话权授权；在获得话权授权时，成为讲话方，并切换到反向专用业务信道，具体包括：根据接收到的话权指示消息中携带的构造反向专用业务信道所需的信息，构造反向专用业务信道的长码掩码和沃尔什码，并将反向业务信道的长码掩码和沃尔什码分别配置成所述构造的反向专用业务信道的长码掩码和沃尔什码，即建立反向专用业务信道；在主动释放话权、话权被授权给其他用户或者接收到话权是否消息时，成为接听方，并切换到反向共享业务信道，具体包括：根据接收到的话权指示消息中携带的构造反向共享业务信道所需的信息，构造反向共享业务信道的长码掩码和沃尔什码，并将反向业务信道的长码掩码和沃尔什码分别配置成所述构造的反向共享业务信道的长码掩码和沃尔什码，即建立反向共享业务信道。The mobile terminal is used to initiate a call request, initiate a speaking right application, and initiate a speaking right release; it is used to judge whether to obtain the speaking right authorization after receiving the speaking right indication message; To the dedicated traffic channel, specifically including: constructing the long code mask and Walsh code of the reverse dedicated traffic channel according to the information required for constructing the reverse dedicated traffic channel carried in the received speaking right indication message, and converting the reverse dedicated traffic channel The long code mask and the Walsh code of the traffic channel are respectively configured as the long code mask and the Walsh code of the reverse dedicated traffic channel of the structure, that is, the reverse dedicated traffic channel is set up; When the right is authorized to other users or when the right to speak message is received, it becomes the receiving party and switches to the reverse shared service channel, which specifically includes: according to the information required for constructing the reverse shared service channel carried in the received right to speak indication message information, constructing the long code mask and the Walsh code of the reverse shared traffic channel, and configuring the long code mask and the Walsh code of the reverse traffic channel respectively as the long code of the constructed reverse shared traffic channel mask and Walsh code, that is, to establish a reverse shared traffic channel.
集群调度服务器用于在接收到移动终端的呼叫请求后，发起呼叫建立过程；用于在接收到移动终端的话权申请时，分配话权并发起话权指示消息；用于确认话权释放或者发起话权释放。The cluster scheduling server is used to initiate the call establishment process after receiving the call request from the mobile terminal; to allocate the speaking right and initiate a speaking right indication message when receiving the speaking right application from the mobile terminal; to confirm the release of the speaking right or to initiate The right to speak is released.
如图2所示，是本发明所述方法是具体流程图，包括如下步骤：As shown in Figure 2, it is a specific flowchart of the method of the present invention, comprising the following steps:
步骤201：终端接收到系统发送的话权指示消息；Step 201: The terminal receives a speech right indication message sent by the system;
步骤202：判断是否获得系统的话权授权，若是，则执行步骤203；否则，执行步骤205；Step 202: Judging whether the authorization of the system's voice is obtained, if yes, execute
步骤203：成为讲话方，根据所述话权指示消息中携带的构造反向专用业务信道所需的信息，构造反向专用业务信道的长码掩码和沃尔什码，得到反向专用业务信道的长码掩码和沃尔什码；Step 203: Become the speaking party, construct the long code mask and Walsh code of the reverse dedicated traffic channel according to the information required for constructing the reverse dedicated traffic channel carried in the speaking right indication message, and obtain the reverse dedicated traffic The channel's long code mask and Walsh code;
步骤204：将反向业务信道的长码掩码和沃尔什码分别配置成所述反向专用业务信道的长码掩码和沃尔什码，建立反向专用业务信道，执行步骤207；Step 204: Configure the long code mask and the Walsh code of the reverse traffic channel as the long code mask and the Walsh code of the reverse dedicated traffic channel respectively, establish a reverse dedicated traffic channel, and execute
步骤205：成为接听方，所述话权指示消息中携带的构造反向共享业务信道所需的信息，构造反向共享业务信道的长码掩码和沃尔什码，得到反向共享业务信道的长码掩码和沃尔什码；Step 205: Become the receiving party, construct the long code mask and Walsh code of the reverse shared traffic channel, and obtain the reverse shared traffic channel by carrying the information required for constructing the reverse shared traffic channel in the speaking right instruction message The long code mask and the Walsh code;
步骤206：将反向业务信道的长码掩码和沃尔什码分别配置成所述反向共享业务信道的长码掩码和沃尔什码，建立反向共享业务信道；Step 206: Configure the long code mask and Walsh code of the reverse traffic channel as the long code mask and Walsh code of the reverse shared traffic channel respectively, and establish the reverse shared traffic channel;
步骤207：讲话方占用反向专用业务信道，接听方占用反向共享业务信道进行业务交互。Step 207: The talking party occupies the reverse dedicated service channel, and the receiving party occupies the reverse shared service channel for service interaction.
如图3所示，是本发明所述方法中，终端获得话权授权到主动释放话权的流程示意图；包括如下步骤：As shown in Figure 3, it is a schematic flow diagram from the terminal obtaining the authorization of the speaking right to actively releasing the speaking right in the method of the present invention; including the following steps:
步骤301：终端A发起呼叫；Step 301: Terminal A initiates a call;
步骤302：收到终端的呼叫请求后，系统发起呼叫的建立过程，终端A做为主叫身份接入组呼中；Step 302: After receiving the call request from the terminal, the system initiates a call establishment process, and terminal A accesses the group call as the calling party;
步骤303：该终端判断自己是主叫方，则为讲话方，并建立反向专用业务信道；Step 303: The terminal judges that it is the calling party, then it is the speaking party, and establishes a reverse dedicated traffic channel;
步骤304：终端A(即当前的讲话方)占用反向专用业务信道，即讲话方的说话过程；Step 304: terminal A (i.e. the current speaker) occupies the reverse dedicated traffic channel, i.e. the speaking process of the speaker;
步骤305：终端A(即当前的讲话方)发起话权释放消息给系统；Step 305: Terminal A (that is, the current speaking party) initiates a speech right release message to the system;
步骤306：系统收到消息后返回话权释放确认消息给终端A(即当前的讲话方)；Step 306: After receiving the message, the system returns a speech right release confirmation message to terminal A (ie, the current speaker);
步骤307：终端A收到话权释放确认消息后，成为接听方，切换到反向共享业务信道。Step 307: After receiving the speaking right release confirmation message, terminal A becomes the receiving party and switches to the reverse shared service channel.
如图4所示，是本发明所述方法中，系统强行释放讲话方话权的情况的流程示意图；包括如下步骤：As shown in Figure 4, it is a schematic flow chart of the situation in which the system forcibly releases the speaker's right of speech in the method of the present invention; comprises the following steps:
步骤401：终端A发起呼叫；Step 401: Terminal A initiates a call;
步骤402：收到终端A的呼叫请求后，系统发起呼叫的建立过程，终端A做为主叫身份接入组呼中；Step 402: After receiving the call request from terminal A, the system initiates a call establishment process, and terminal A accesses the group call as the calling party;
步骤403：终端A判断自己是主叫方，则为讲话方，并建立反向专用业务信道；Step 403: Terminal A determines that it is the calling party, then it is the speaking party, and establishes a reverse dedicated traffic channel;
步骤404：终端A(即当前的讲话方)占用反向专用业务信道；Step 404: terminal A (ie the current speaker) occupies the reverse dedicated traffic channel;
步骤405：系统发起话权释放消息给终端A；Step 405: The system initiates a talk right release message to terminal A;
步骤406：终端A接收到话权释放消息后，成为接听方，切换到反向共享业务信道。Step 406: After receiving the speaking right release message, terminal A becomes the receiving party and switches to the reverse shared traffic channel.
如图5所示，是本发明所述方法中，终端在呼叫建立后获取话权，业务交换过程中，系统将话权授权给另一个用户的情况的流程示意图；具体包括：As shown in Figure 5, it is a schematic flow diagram of the situation in which the terminal obtains the speaking right after the call is established, and the system authorizes the speaking right to another user during the service exchange process in the method of the present invention; specifically includes:
步骤501：终端A发起呼叫；Step 501: Terminal A initiates a call;
步骤502：收到终端的呼叫请求后，系统发起呼叫的建立过程，终端A做为主叫身份接入组呼中；Step 502: After receiving the call request from the terminal, the system initiates a call establishment process, and terminal A accesses the group call as the calling party;
步骤503：终端A判断自己是主叫方，则为讲话方，并建立反向专用业务信道；Step 503: Terminal A determines that it is the calling party, then it is the speaking party, and establishes a reverse dedicated traffic channel;
步骤504：终端A(即当前的讲话方)占用反向专用业务信道；Step 504: terminal A (ie the current speaker) occupies the reverse dedicated traffic channel;
步骤505：系统将话权授权给其他用户；Step 505: the system authorizes the speaking right to other users;
步骤506：终端A收到话权指示消息，判定话权已授权给其他用户，则成为接听方，切换到反向共享业务信道。Step 506: Terminal A receives the speaking right indication message, determines that the speaking right has been authorized to other users, then becomes the receiving party, and switches to the reverse shared service channel.
如图6所示，是本发明所述方法中，是已处于组呼中的终端主动申请获得话权到主动释放话权的情况的流程示意图；具体包括如下步骤：As shown in Figure 6, in the method of the present invention, it is a schematic flow diagram of a situation in which a terminal in a group call actively applies for the right to speak to releases the right to speak actively; it specifically includes the following steps:
步骤601：终端A处于组呼中；Step 601: Terminal A is in a group call;
步骤602：终端A发起话权申请；Step 602: Terminal A initiates a speaking right application;
步骤603：系统将话权授权给终端A；Step 603: the system authorizes the speaking right to terminal A;
步骤604：终端A收到话权指示消息后，成为讲话方，切换到反向专用业务信道；Step 604: After receiving the speaking right indication message, terminal A becomes the speaking party and switches to the reverse dedicated traffic channel;
步骤605：终端A(即当前的讲话方)占用反向专用业务信道；Step 605: terminal A (ie the current speaker) occupies the reverse dedicated traffic channel;
步骤606：终端A(即当前的讲话方)发起话权释放；Step 606: Terminal A (that is, the current speaking party) initiates the release of the speaking right;
步骤607：系统收到消息后返回话权释放确认消息给终端A(即当前的讲话方)；Step 607: After receiving the message, the system returns a speech right release confirmation message to terminal A (ie, the current speaker);
步骤608：终端A收到话权释放确认消息后，成为接听方，切换到反向共享业务信道。Step 608: After receiving the speaking right release confirmation message, terminal A becomes the receiving party and switches to the reverse shared service channel.
如图7所示，是本发明所述方法中，已处于组呼中的终端主动申请获得话权到系统强行释放话权的情况的流程示意图；具体包括如下步骤：As shown in Figure 7, it is a schematic flow diagram of the situation in which the terminal in the group call actively applies for the right to speak to the system forcibly releasing the right to speak in the method of the present invention; it specifically includes the following steps:
步骤701：终端A处于组呼中；Step 701: Terminal A is in a group call;
步骤702：终端A发起话权申请；Step 702: Terminal A initiates a speaking right application;
步骤703：系统将话权授权给终端A；Step 703: the system authorizes the speaking right to terminal A;
步骤704：终端A收到话权指示消息后，成为讲话方，切换到反向专用业务信道；Step 704: After receiving the speaking right indication message, terminal A becomes the speaking party and switches to the reverse dedicated traffic channel;
步骤705：终端A(即当前的讲话方)占用反向专用业务信道；Step 705: terminal A (ie the current speaker) occupies the reverse dedicated traffic channel;
步骤706：系统发起话权释放消息给终端A(即当前的讲话方)；Step 706: The system initiates a speaking right release message to terminal A (ie, the current speaking party);
步骤707：终端A收到话权释放消息后，成为接听方，切换到反向共享业务信道。Step 707: After receiving the speaking right release message, terminal A becomes the receiving party and switches to the reverse shared service channel.
如图8所示，是本发明所述方法中，已处于组呼中的终端主动申请获得话权到系统将话权授权给另一个用户的情况的流程示意图；具体包括如下步骤：As shown in Figure 8, it is a schematic flow diagram of the situation in which the terminal in the group call actively applies for the speaking right to the system authorizing the speaking right to another user in the method of the present invention; it specifically includes the following steps:
步骤801：终端A处于组呼中；Step 801: Terminal A is in a group call;
步骤802：终端A发起话权申请请求；Step 802: Terminal A initiates a speaking right application request;
步骤803：系统将话权授权给终端A；Step 803: the system authorizes the speaking right to terminal A;
步骤804：终端A收到话权指示消息后，判断被授予话权，成为讲话方，切换到反向专用业务信道；Step 804: After receiving the speaking right indication message, terminal A judges that the speaking right is granted, becomes the speaking party, and switches to the reverse dedicated traffic channel;
步骤805：终端A(即当前的讲话方)占用反向专用业务信道；Step 805: terminal A (ie the current speaker) occupies the reverse dedicated traffic channel;
步骤806：系统将话权授权给其他用户；Step 806: the system authorizes the speaking right to other users;
步骤807：终端A收到话权指示消息后，判定话权已授予其他用户，则成为接听方，切换到反向共享业务信道。Step 807: After receiving the speaking right indication message, terminal A determines that the speaking right has been granted to other users, then becomes the receiving party, and switches to the reverse shared service channel.
如图9所示，是本发明所述方法中，终端因迟后接入组呼而成为接听方后再主动申请获取话权的情况的流程示意图；包括如下步骤：As shown in Figure 9, it is a schematic flow chart of the situation in which the terminal actively applies for the right to speak after becoming the answering party due to the delayed access to the group call in the method of the present invention; it includes the following steps:
步骤901：终端A处于组呼中，但未能及时接入组呼；Step 901: Terminal A is in a group call, but fails to access the group call in time;
比如终端A因不在服务区，或者在其他更高优先级的呼叫中而未能及时接入当前组呼中；For example, terminal A fails to access the current group call in time because it is not in the service area or is in other calls with higher priority;
步骤902：未能及时接入当前组呼的原因消除后，终端A发起呼叫；Step 902: After the reason for failing to access the current group call in time is removed, terminal A initiates a call;
比如，终端A进入服务区、或者从其他更高优先级的呼叫中退出；For example, terminal A enters the service area, or exits from other calls with higher priority;
步骤903：收到终端A的呼叫请求后，系统判断该组呼已经存在，则发起迟后接入过程；Step 903: After receiving the call request from terminal A, the system judges that the group call already exists, and initiates a delayed access process;
步骤904：终端A判断是迟后接入呼叫，成为接听方，并建立反向共享业务信道；Step 904: Terminal A judges that the call is received later, becomes the receiving party, and establishes a reverse shared service channel;
步骤905：终端A发起话权申请请求消息给系统；Step 905: Terminal A initiates a speaking right application request message to the system;
步骤906：系统接收到请求消息后，将话权授权给终端A；Step 906: After receiving the request message, the system authorizes the speaking right to terminal A;
步骤907：终端A收到话权指示消息后，判定被授予话权，成为讲话方，切换到反向专用业务信道。Step 907: After receiving the speaking right indication message, terminal A determines that the speaking right is granted, becomes the speaking party, and switches to the reverse dedicated traffic channel.
如图10所示，是本发明所述方法中，终端在作为被叫接入组呼后成为接听方，再主动申请获取话权的情况的流程示意图；包括如下步骤：As shown in Figure 10, it is a schematic flow diagram of the situation in which the terminal becomes the answering party after accessing the group call as the called party in the method of the present invention, and then actively applies for the right to speak; it includes the following steps:
步骤001：系统发起呼叫的建立过程，终端A作为被叫接入组呼中；Step 001: The system initiates the call establishment process, and terminal A accesses the group call as the called party;
步骤002：终端A判断是作为被叫接入组呼中，成为接听方，并建立反向共享业务信道；Step 002: Terminal A judges that it is in the group call as the called party, becomes the receiving party, and establishes the reverse shared service channel;
步骤003：终端A发起话权申请请求给系统；Step 003: Terminal A initiates a speaking right application request to the system;
步骤004：系统接收到请求消息后，将话权授权给终端A；Step 004: After receiving the request message, the system authorizes the speaking right to terminal A;
步骤004：终端A收到话权指示消息后，判定被授予话权，成为讲话方，切换到反向专用业务信道。Step 004: After receiving the speaking right indication message, terminal A determines that the speaking right is granted, becomes the talking party, and switches to the reverse dedicated traffic channel.
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
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