WO2011015012A1

WO2011015012A1 - Method for informing a calling terminal by a called terminal in a code division multiple access system

Info

Publication number: WO2011015012A1
Application number: PCT/CN2009/075546
Authority: WO
Inventors: 张建刚; 张志辉; 陈建红
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-08-04
Filing date: 2009-12-14
Publication date: 2011-02-10
Also published as: CN101635896A

Abstract

A method for informing a calling terminal by a called terminal in a Code Division Multiple Access system is disclosed in the present invention, which includes: after the calling terminal and the called terminal establish a call and the called terminal answers, the called terminal transmits a called party connection notification message to a core network (or a switch); after receiving said notification message, when connecting the channel between said calling terminal and said called terminal, said core network transmits the called party connection notification message to said calling terminal. The present invention realizes that the called terminal informs the calling terminal when answering, and the calling party makes use of the received information to perform a variety of meaningful operations, such as informing the terminal to adjust chargeable time to real time, performing optimization on the color ring back tone and the ring back tone of the calling terminal, and so on.

Description

TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a called terminal in a Code Division Multiple Access (CDMA) system. The method of notifying the calling terminal. BACKGROUND OF THE INVENTION At present, in the CDMA system, the timing of the terminal caller display is actually started after the successful establishment of the calling service channel, and is not the timing started after the called party is connected. Therefore, during the user's use, some users may I think that the phone will start to charge when it displays the time. However, the call is not actually connected, and I feel that I have been overcharged, but it is not. However, in the CDMA system, after the called terminal answers, the calling terminal is not notified, and the calling terminal does not know when the called terminal is connected, so that the time when the called terminal is turned on cannot be displayed on the calling terminal as the display timing. Initially, there is currently a need for a technical solution for notifying the calling terminal when the called terminal answers. SUMMARY OF THE INVENTION The present invention provides a method for a called terminal to notify a calling terminal in a CDMA system to solve the problem of how to notify a calling terminal when a called terminal answers in a CDMA system. In order to solve the above problem, the present invention provides a method for a called terminal to notify a calling terminal in a code division multiple access system, including: a calling terminal and a called terminal establish a call; after the called terminal answers, the called terminal Sending a notification message of the called party to the core network; after receiving the notification message, the core network connects the voice channel between the calling terminal and the called terminal; and the core network sends a notification message of the called party to the calling terminal. The present invention also provides a method for a called terminal to notify a calling terminal in a code division multiple access system, comprising: a calling terminal and a called terminal establish a call; after the called terminal answers, the called terminal sends the called terminal to the switch The notification message of the connection is called; after receiving the notification message, the switch connects the voice channel between the calling terminal and the called terminal; the switch sends a notification message that the called party is connected to the calling terminal. Compared with the prior art, the present invention can be used to notify the calling terminal when the called terminal answers. The calling party can use the received information to perform a variety of meaningful work. For example, the terminal is notified to adjust the charging time to the real time; the ring tone and the ring back tone of the calling terminal are optimized. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a network architecture diagram of a CDMA system according to an embodiment of the present invention; FIG. 2 is a flowchart of a method for a called terminal to notify a calling terminal in a CDMA system according to an embodiment of the present invention; A flowchart of a specific example of a method for a called terminal to notify a calling terminal in a CDMA system according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION The present invention will be further described below in conjunction with the drawings and specific embodiments. In the present invention, in order to ensure that the base station controller (BSC) can know in time that the called terminal has been connected, the switch needs to contact the calling terminal of the BSC when the call between the calling party and the called party is connected. Send a notification message. 1 is a network architecture diagram of a CDMA system according to an embodiment of the present invention. As shown in FIG. 1, the network communication system of the present invention mainly relates to the following network elements: The base station includes a Base Transceiver Station (BTS) and a base station controller (BSC), the core network includes a mobile switching center (MSC, or simply a switch), and the core network interacts with the base station through the mobile switching center, where the main network includes: a mobile terminal (MS) 102, a mobile terminal 104; Base Transceiver Station (BTS) 106; Base Station Controller (BSC) 108 and Mobile Switching Center (MSC) 110. The use of the above network elements are: a base transceiver station (BTS): an interface device of a user terminal; a base station controller (BSC): completes control of multiple base stations, and is in close contact with the mobile switching center to complete communication services; (MSC): Complete communication with the BSC, and also communicate with the core network to complete the interconnection function. The mobile terminal 102, the mobile terminal 104 and the base transceiver station 106 perform wireless communication in accordance with the air interface standard ten, and the base transceiver station 106 performs information exchange with the base station controller 108; the base station controller 108 and the mobile exchange center 110 follow the A port. Standard protocol for call processing. 2 is a flowchart of a method for a called terminal to notify a calling terminal in a CDMA system according to an embodiment of the present invention, as shown in FIG. 2, a method for a called terminal to notify a calling terminal in a CDMA system according to the present invention; The method includes the following steps 10 to 50: Step 10: After the calling terminal and the called terminal establish a call and enter a call state, the called terminal rings, and the calling terminal listens to the ring back tone or the ring back tone; Step 20: The called terminal answers After that, the core network sends a notification message that the called party is connected; Step 30: After receiving the notification message that the called party is connected, the core network connects the voice channel between the calling terminal and the called terminal, and connects to the calling terminal. The BSC sends a notification message that the called party is connected; Step 40: After receiving the notification message that the called party is connected, the BSC of the calling terminal forwards the notification message to the calling terminal, and the BSC of the calling terminal performs corresponding processing (including The terminal is notified to adjust the charging time to the real time or to optimize the ring tone and ring back tone of the calling terminal. Step 50: After the call ends, the calling terminal and the called terminal release the call. The present invention will be further described below in conjunction with specific examples. 3 is a flow chart showing a specific example of a method for a called terminal to notify a calling terminal in a CDMA system according to an embodiment of the present invention. As shown in FIG. 3, specific steps of a technical implementation of the present invention are illustrated. The calling terminal, the called terminal, and the base station communicate with the switch to complete the establishment and release of the call, including the following steps 301 to 304: Step 301, the calling terminal and the called terminal are successfully established, and the called ringing is performed. Calling the ringback tone or ring tones; Step 302: The called terminal picks up the call and the called terminal sends a notification message that the called party is connected to the current base station, and the base station sends the notification message to the switch; Step 303: The switch receives After the notification message of the called party is connected, the voice channel between the calling terminal and the called terminal is connected, and the base station where the calling terminal is located is sent a notification message that the called party is connected, and the base station forwards the notification message to the Calling terminal Step 304: After the call ends, the calling terminal and the called terminal perform call release. Table 1 illustrates specific messages employed by embodiments of the present invention. Table 1 Specific message table used by the called terminal to notify the calling terminal

The notification message that the called party is connected in the embodiment of the present invention is a standard message FWIM (Flash With Information Message) message defined by the protocol in the CDMA system, but at the same time, the Line Control field in the message is required (see C.S0005-D). V2.0 3.7.5.15 Line Control) to expand.

The FWIM can include a plurality of record types. The present invention utilizes the Line Control in the FWIM to identify the notification that the called party has been turned on. When the FWIM contains the i-recorded type Line Control (the recorded type value is 0x0f) and the POLARITY thereof — A value of 1 in the INCLUDED field indicates that the called party is connected. Table 2 illustrates an extension of the specific message employed by the present invention. Table 2 Table of extension methods for specific messages

Since the reverse polarity charging user (for example, the wireless public charging terminal) is called, when the called user is connected, the switch also sends a FWIM to the calling terminal, and includes the Line Control record type, where POLARITY — INCLUDED=1, the FWIM needs to be sent to the terminal to notify the charging terminal to start charging, so that the base station needs to distinguish whether the FWIM sent by the switch needs to be sent to the terminal, that is, whether the current calling party is the charging terminal or not. Billing terminal. For the charging terminal to be the calling party, the FWIM needs to be sent to the terminal; when the non-accounting terminal is the calling party, the FWIM sent by the core network is received, if the message only contains the Line Control record For the recording type, the FWIM does not need to be sent to the terminal, and if the FWIM contains other record types than Line Control, it needs to be transmitted to the terminal. Whether the user terminal is a non-accounting terminal is represented by the most bit of the Reserved field of the Line Control field, and is independently USER_TYPE in the present invention, and is not charged when USER_TYPE is 1. Terminal, when USER_TYPE is 0, it indicates that it is a charging terminal. In summary, the foregoing embodiment of the present invention provides a method for a called terminal to notify a calling terminal in a code division multiple access system, after the calling terminal and the called terminal establish a call and the called terminal answers the call. The called terminal sends a notification message that the called party is connected to the core network (or the switch); when the core network receives the notification message, when the voice channel between the calling terminal and the called terminal is connected, Sending a notification message that the called party is connected to the calling terminal. The invention realizes that the called terminal notifies the calling terminal when the called terminal answers, and the calling party performs various meaningful work by using the received information, for example, notifying the terminal to adjust the charging time to the real time, and ringing the ring tone of the calling terminal. The ring tone is optimized. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

The method for notifying a calling terminal of a called terminal in a code division multiple access system, comprising: a calling terminal and a called terminal establishing a call;

After the called terminal answers, the called terminal sends a notification message to the core network that the called party is connected;

After receiving the notification message, the core network connects the voice channel between the calling terminal and the called terminal;

The core network sends a notification message that the called party is connected to the calling terminal. The method according to claim 1, wherein after receiving the notification message, the core network turns on the voice channel between the calling terminal and the called terminal, and sends the voice channel to the calling terminal. Send a notification message that the called party is connected, including:

After receiving the notification message, the core network turns on the voice channel between the calling terminal and the called terminal, and sends a notification message that the called party is connected to the base station controller BSC of the calling terminal. After receiving the notification message that the called party is connected, the BSC of the calling terminal forwards the notification message to the calling terminal. The method according to claim 2, wherein after the BSC of the calling terminal forwards the notification message to the calling terminal, the method further includes:

The BSC of the calling terminal performs a notification terminal ^! The billing time is adjusted to the real time or the calling terminal optimizes the ring tones and ring back tones. The method according to claim 1, wherein after the calling terminal and the called terminal establish a call and enter a call state, the method further includes: the called terminal rings, and the calling terminal listens to a ringback tone Or ring tones. The method according to claim 1, wherein after the calling terminal and the called terminal have finished talking, the method further includes: the step of calling the call by the calling terminal and the called terminal 4 installed. The method according to claim 1, wherein the notification message that the called terminal sends the called party to the core network is a FWIM message of the code division multiple access system.

A method for notifying a calling terminal of a called terminal in a code division multiple access system, comprising: a calling terminal and a called terminal establishing a call;

After the called terminal answers, the called terminal sends a notification message that the called party is connected to the switch;

After receiving the notification message, the switch turns on the voice channel between the calling terminal and the called terminal;

The switch sends a notification message that the called party is connected to the calling terminal.

The method according to claim 7, wherein after the switch receives the notification message, the switch connects the voice channel between the calling terminal and the called terminal, and sends the call to the calling party. The terminal sends a notification message that the called party is connected, including:

After receiving the notification message, the switch turns on the voice channel between the calling terminal and the called terminal, and sends a notification message that the called party is connected to the current base station of the calling terminal; After receiving the notification message that the called party is connected, the current base station of the calling terminal forwards the notification message to the calling terminal.

The method according to claim 7, wherein, after the calling terminal and the called terminal establish a call and enter a call state, the method further includes: the called terminal rings, and the calling terminal listens back Ring tone or ring tones.

The method according to claim 7, wherein, after the calling terminal and the called terminal end the call, the method further includes: the step of the calling terminal and the called terminal performing call release image.