WO2005029880A1

WO2005029880A1 - The method of non-cid terminal receiving short message and non-cid terminal receive short message with cid terminal compatible

Info

Publication number: WO2005029880A1
Application number: PCT/CN2003/000805
Authority: WO
Inventors: Haibo Lu; Peng Wang; Zhengang Li; Jun He; Shidong Hou
Original assignee: Zte Corporation
Priority date: 2003-09-22
Filing date: 2003-09-22
Publication date: 2005-03-31
Also published as: AU2003268620A1; CN1820515A; CN100496134C

Abstract

The present invention relates a method of non-CID terminal receiving short message from a message switch in PSTN/ISDN, the method also include non-CID terminal would receive short message with CID terminal compatiblely. The present invention aims at let terminals would receive message from message switch. The method performed as: short message transmitted through downlink, after the message switch detect the answer of the terminal, send a special signal which is different from normal communicate signal after a Tsend cas delay. The Tsend cas delay period is tuneable. After the message terminal receive the special signal, the message switch receive the establish signal through uplink.

Description

Method for enabling non-calling display terminal to receive short message and compatible with receiving call display terminal

The invention relates to short message interaction between a short message platform on a public switched telephone network (PSTN) or an integrated service digital network (ISDN) and a user terminal, and more particularly, to accessing a callerless display terminal on the short message platform. A method for enabling a CID-free short message terminal to receive information from a short message platform and compatible with a CID short message terminal to receive information from a short message platform. Background technique

With the rapid development of fixed network short message (short message) services, especially the widespread application of the ETSI protocol on fixed network short message (short message) platforms such as PSTN or ISDN, operators have continued to expand their business and extend their reach to various fields. The ETSI fixed network short message related protocol (see ETSI ES 201 912 vl. 1.1 (2002-01)) clearly defines one of the conditions for implementing the short message protocol is that the telephone network provides a caller ID (CID) to the terminal. However, since many countries and regions have considerable PSTN user groups that do not have the CID function, it is necessary to be able to access users and implement the ETSI fixed network short message protocol without CID.

Generally, the overall structure of a short message system is shown in Figure 1. The short message system is mainly composed of a short message terminal, a short message platform and a PSTN / ISDN network. The SMS terminal is connected to the network through PSTN / ISDN, and the SMS platform is connected to the network through the ISDN rate interface, No. 7 signaling or other signaling. The condition for the SMS terminal and SMS platform to access the network is that the network can provide caller ID. When a short message terminal sends and receives a short message, a corresponding voice channel needs to be established between the short message terminal and the short message terminal, and the corresponding basic call control process is entered according to the access type. The general rules for sending and receiving short messages are shown in Figure 2.

The first step (short message upload), the terminal will make a call to the short message platform (the short message platform plays the role of short message storage and forwarding), as shown in the figure, the network ^ ^ provides the terminal's CID to SMS platform. The SMS platform uses this information to identify the terminal and uses it for billing purposes.

After the voice channel is established, the terminal will send a short message to the short message platform. Once the messaging is completed, the terminal's connection to the SMS platform will be released.

In the second step (delivering a short message), the SMS platform will make a call to the terminal. At the same time, the network will provide the CID of the SMS platform to the terminal. The terminal uses this information to identify the SMS call and automatically pick up the phone to establish a connection. After the connection is established, the short message is sent from the short message platform to the terminal through information interaction. Once the message is transmitted, the connection between the terminal and the short message platform will be released.

Because the existing SMS platform supporting the ETS I protocol only supports users with CID SMS terminals, for networks without CID, the calling CID can be sent to the SMS platform during the short message upload process, but for short messages It is said that when the short message platform calls the terminal, the CID of the short message platform will not be transmitted to the short message terminal, resulting in that the terminal cannot recognize the incoming call of the platform and cannot receive short messages.

At present, there are fatal shortcomings in implementing a short message platform that supports the ETSI short message protocol, which is inaccessible to users without CID. As a result, the short message service loses a large number of users. As a result, the operator ’s investment is not widely returned, and it is not compatible with the presence or absence of CID. The user accesses the short message platform, so that the user network gradually transitions from no CID to CID, and does not affect the normal use of the short message service. Summary of invention

It is an object of the present invention to provide a method for enabling a CID-less short message terminal to receive information from a short message platform.

Another object of the present invention is to enable a fixed network short message terminal with a CID and a fixed network short message terminal without a CID to implement information interaction in the same platform, thereby increasing the adaptability of the platform to the terminal.

According to an aspect of the present invention, a method for enabling a CID-free short message terminal to receive information from a short message platform in a PSTN or ISDN network is provided. The method includes at least Next steps: The terminal goes off-hook to answer a call, and waits for a predetermined waiting time! Waiting for a special signal from the platform within ^^, wherein after the terminal receives the special signal, send a chain upload message to the platform after a predetermined sending time T _SEND . _EST ; if the terminal is waiting Time T _{WA1 T} _c; hang up if the special signal is not received within _AS .

According to another aspect of the present invention, there is provided a method for making a CID-free short message terminal compatible with a CID short message terminal to receive information from a short message platform in a PSTN or ISDN network. The method includes at least the following steps: the terminal responds by going off-hook A call, and wait for a special signal from the platform within a predetermined waiting time T _WAIT — _s ; after receiving the special signal, the terminal waits 1 ^ for a predetermined sending time. _ ^ Sends an upload chain-building message to the platform; wherein the off-hook response of the CID-less SMS terminal is an automatic off-hook response after a predetermined time period T _AURM _ ™ _E ; the off-hook response of the CID-based SMS terminal It is an automatic off-hook response after determining that the incoming call is a short message platform call.

According to still another aspect of the present invention, a method for making a CID-free short message terminal compatible with a CID short message terminal to receive information from a short message platform in a PSTN or ISDN network is provided. The method includes at least the following steps: the terminal responds by going off-hook A call, and sending a chain upload message to the platform after a predetermined sending time T _{s EST} ; wherein the CID-free short message terminal sends the chain establishing message within a predetermined waiting time T _WA1T _ _CAS Waiting for the platform to send a special signal, and sending the upload chain establishment message after receiving the special signal; and wherein the CID short message terminal directly sends the upload chain establishment message after the off-hook response. BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of a system that generally implements ETSI fixed network SMS;

Figure 2 is a schematic diagram of the general principles of ETSI fixed network short message sending and receiving;

3 is a timing control diagram of a short message call response of a short message terminal without a CID display; FIG. 4 is a time sequence diagram of a CID short message terminal interacting with a platform in an embodiment of the present invention; 5 is a sequence diagram of interaction between a CID short message terminal and a platform in a method according to another embodiment of the present invention;

FIG. 6 is a flowchart of a terminal response when calling a terminal without a CID;

FIG. 7 is a flowchart of a terminal response when calling a terminal with a CID. detailed description

The focus of solving the problem that a non-CID short message terminal accesses the short message platform and can receive and send short messages correctly is mainly how a non-CID short message terminal receives short messages sent by the platform. This requires that the CID-free SMS terminal can correctly identify the incoming call of the SMS platform and can receive the SMS correctly, and it must not affect the answer and call of non-SMS calls.

Since the short message terminal has a CID does not have any effect on the short message terminal uploading the short message to the platform, the solution provided by the present invention is mainly to enable the downloaded message of the platform to reach the short message terminal. According to the present invention, when the message platform detects the response of the terminal when the message is down, the short message T _SEND _{_AS} sends a special signal to the short message terminal. The special signal may be, for example, the terminal alert tone CAS. The specific definition of CAS can be found in the description of DT-AS signal in ETSI EN 300 778-2 VI. 2.1 (2001-05). This special signal must be distinguished from the ordinary voice signal to avoid the ordinary voice call from being mistaken as a special signal and being mistakenly judged as a short message call. The delay time T _{s and} s are adjustable. The purpose of the delay is for the terminal to receive stably. After the CAS tone is sent, the SMS platform waits to accept the link-building message EST uploaded by the terminal. In this specification, the special signals are all based on CAS tones, but those skilled in the art should understand that the special signals may be any other signals and are not limited to CAS tones.

When the SMS platform calls a non-CID SMS terminal, if no one answers the call, the ring will last for a certain period of time T ALARM. T IME (TALARM-TIME can be set by the terminal), and the terminal automatically answers (when someone answers, the subsequent message interaction is the same). After the terminal responds, it waits to receive the CAS tone from the platform. If the CAS tone from the platform is received within the specified waiting time T _WA1T _ _CAS , the call is identified as a platform call, and waits until the EST message is sent T _SEND _ _EST to Then, an EST message is sent to the short message platform for subsequent message interaction.

The purpose of sending CAS tones is to make the SMS terminal distinguish between ordinary calls and SMS calls. After a normal call enters the SMS terminal, if no one answers, the terminal rings automatically after a certain amount of time T ALARM-TIME, and waits for a CAS tone from the platform. If it goes off-hook, it immediately starts waiting for a CAS tone from the platform, and The waiting time starts to be counted. If no CAS tone is received within the predetermined waiting time T ^, the terminal hangs up. In order to avoid that the terminal automatically picks up the phone and causes unnecessary charging to the calling user, the terminal should preferably determine whether the incoming call is a short message call within the non-charging time T NO_CHARGE specified by the operator. Hang up in time and remove the communication link.

According to the method of the present invention, one of the methods for solving the problem of compatible access to a short message platform with a CID short message terminal and a non-CID short message terminal is to require the short message terminal to send the EST time T _SEND _{_EST} greater than the time waiting for the CAS tone T _WAIT _ _S ETS I The network short message protocol stipulates that when the message is down, the terminal should send an EST message to the platform within 0 to 4 seconds after answering the call of the information platform to avoid the conflict between the platform's CAS tone and the terminal's EST upload, so that there is no CI D short message. The terminal has sufficient time within T _WAIT ^ to determine whether the incoming call is a text message call and perform subsequent processing, while the CID terminal recognizes the text message call within the time specified in the agreement

Within TsEND (WA <T _SEND . _EST <4), the EST message is sent to the short message platform, so that the two terminals are compatible for access.

Another method for solving the problem of compatible access to a short message platform with a CID short message terminal and a non-CI D short message terminal according to the present invention is that the short message platform does not send a CAS tone after detecting that a CID short message terminal is off-hook, and the terminal is on the identification platform after CID, CAS tones transmitted within the waiting time T _sEND _ _CAS, the EST channel message ^ beans internet. If the platform is received within the EST T SENn _ _{_S,} directly subsequent message interaction, without hair CAS tones, thereby speeding up information exchange. After the non-CID SMS terminal goes off-hook, the platform will not receive the EST message from the terminal within the T ₅ ™ ^ time range. After the T _SEND _{_WS} timer expires, the platform will send a CAS tone to the SMS terminal. If the SMS terminal is on T _WA When the CAS tone issued by the platform is received within _T. _CAS time, the platform responds with an EST message after the T _SEND . _EST timer expires. Otherwise, then Hang up the call within T NO. CHARGE time to avoid caller billing loss.

According to an embodiment of the present invention, when the call enters a CID-free short message terminal, the response step of the terminal includes:

Ringing; Manual answering starts to wait for the CAS tone at regular intervals; In the case of non-human answering, the terminal delays TALARM.TIME and automatically picks up the phone to answer, and prepares to receive CAS tones regularly. The terminal waits to receive a CAS tone within T _{WAIT s} . If a CAS tone is received, the terminal recognizes that the incoming call is a short message platform call, sends a EST message to the platform after T _SEND _{_EST is} timed, and enters a subsequent message interaction process.

If the terminal does not receive a CAS tone in T _{WA IT} _c: _AS , and the call is answered by manual off-hook, the normal voice call flow is entered after T WAIT.CAS.

If the terminal does not detect a CAS tone within the time range, and the call is automatically off-hook to answer, the SMS terminal should hang up and disconnect the link within the T NO-CHARGE time range.

When the call enters a short message terminal with a CID, the response steps of the terminal include: firstly determining the CID, and if the call is a short message platform call, the terminal automatically picks up the phone and answers; after receiving the CAS tone issued by the platform, the delay is T _SEND _{_EST} Then send the EST message to the SMS platform for subsequent protocol message interaction.

If the CID is not a short message platform number, the terminal continues to ring and waits for a manual answer after the voice call process.

However, according to another embodiment of the present invention, when a call enters a CID short message terminal, the CID short message terminal does not have to wait for a CAS tone issued by the platform, but directly sends an EST message to the short message platform after a delay of T _SEND . _EST . According to this embodiment, the response steps of the CID short message terminal include:

The CID is first determined, if the call is an SMS platform, the terminal automatically answers the call, the platform issued preparation CAS tones delay time T _SEND - _s within the range, without waiting for CAS tones, but after the transmission delay _T SBND _ _EST The EST message is sent to the short message platform for subsequent protocol message interaction. EST internet message received within the time _T SBND _ _s range, the terminal identified as The CID short message terminal can directly perform subsequent information interaction without issuing CAS tones.

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

Figure 1 is a schematic diagram of a system that generally implements ETSI fixed network short messages. The short message terminal is interconnected with the short message platform through the PSTN / ISDN network, and the short message platform and the PSTN / ISDN network are connected through No. 7 signaling or an ISDN rate interface. The PSTN / ISDN network provides calling information to the short message terminal and the short message platform, respectively. The short message platform is composed of the short message gateway and the short message center kernel. The short message gateway and the short message center kernel communicate with each other through ± / ¾ domain network or other methods.

Figure 2 is a schematic diagram of the general principles of ETSI fixed network short messages. 1 is the message uplink. The SMS terminal sends a message to the SMS platform. The PSTN / ISDN network provides the CID to the SMS platform. 2 For the downlink of the message, the short message platform calls the short message terminal. The terminal recognizes the platform call through the CID provided by the network, and responds to the message interaction process.

FIG. 3 is a sequence control charting of a short message call response of a non-CID short message terminal, as follows. The SMS terminal rings at TO, and when no one answers, the terminal automatically picks up the phone at T1, T ALARM.TIME = T1-TO, T _{AL, the} magic value of random τ can be adjusted; in the case of manual answering,

TALAR .TIME〉 T1-TO.

Due to the network delay, the platform detects that the terminal goes off-hook at T2, and sends a CAS tone to the SMS terminal at time T3, where T SEND.CAS-T3-T2, the value of T _s is adjustable; the SMS terminal receives at time T4 The CAS tone issued by the SMS platform identifies the incoming call on the SMS platform and prepares to send an EST message to the SMS platform;

If it is time T5; the CAS tone issued by the platform has not been received, the terminal hangs up immediately.

TW _AI T.CAS = T5-Tl. T6 is a non-charging time limit. TNO. CHARGE-T6-T1. Considering the on-hook delay, T6-T5> 200ms.

If the short message terminal receives the CAS tone issued by the short message platform at time T5, then at time T7, the EST message is sent to the short message platform, where T _SEND _{_EST} = T7-T1, short message The platform receives the EST message at T8.

As can be seen from the figure, the relationship at each moment is Tl <T2 <T3 <T4 <T5 <T6, T4 <T7 <T8

T _A u _{TI ME} is the time when the SMS terminal rings without answering until the automatic answering time; T _SEND ^ _S is the timing from when the platform detects that the SMS terminal goes off-hook to sending a CAS tone; T _WA , _T ^ is the time when the SMS terminal goes off-hook Timing of waiting for CAS tone after answering;

TfJO is the operator's automatic answer without charge timing for the SMS terminal without SMS call;

T _{s EST} is the timing at which the SMS terminal waits to send an EST message to the SMS platform after the SMS terminal automatically answers.

"^ 申 TsEND TwAIT T T4-Tl <T _SEND

FIG. 4 is a sequence diagram of interaction between a CID short message terminal and a platform in an embodiment of the present invention. Referring to FIG. 4, at T0, the short message terminal receives the platform call; at time T1, the terminal recognizes the short message platform incoming call and automatically goes off-hook. Due to the network delay, the platform detects that the terminal goes off-hook at time T2, and sends a CAS tone at time TT3, Τ-Τ3-Τ2.

Some CID terminals will receive the CAS tone issued by the platform at time T and do not perform any processing. Instead, they will send an EST message to the SMS platform at time T7. Time T5 is the time period specified by the operator excluding the ultra short call charge, that is, T _N. _ReE = T5-Tl. At time T6, the terminal sends an EST message to the platform, T6-T1 = T TsEND T

The entire timing is T0 <T1 <T2 <T3 <T4 <T5 <T6

FIG. 5 is a sequence diagram of interaction between a CID short message terminal and a platform in a method according to another embodiment of the present invention. Referring to FIG. 5, at the time of TO, the short message terminal receives the platform call, and recognizes the platform call at time T1 and automatically picks up the phone. The platform detects that the terminal goes off-hook at time T2. The SMS terminal sends an EST message to the SMS platform at T3. At T4, if the platform does not receive the EST message from the terminal, it sends a CAS tone to the SMS terminal.

The entire timing is T0 <T1 <T2 <T3 <T4 T = T4-Tl TsEND = T3-T1, ¹ SEND— CAS i SEND. EST o

The method of the present invention mainly includes two processes of a terminal answering when a call enters a non-CID terminal and a terminal answering when a call has a CID short message terminal.

FIG. 6 shows a terminal response flow when a call enters a non-CID terminal, as follows. First, the call enters the terminal without CID, and the terminal rings and starts timing (step 101); then, it is judged whether there is a manual answer within the time range of T _AURM „ _T1ME (step 102), and if no one answers, it proceeds to step 104 to ring. start delay _T AURM _ after _T1ME hook automatically, and start timing; then at step 105 and waiting to receive internet under CAS tones within the time range T _wAIT _ _s; at step 106, determines whether or not CAS tones is not received If so, go to step 109 to determine whether the terminal answers the call manually. If a CAS tone is received, identify the short message call in step 107. Starting from the off-hook, send the EST message to the short message platform after a delay of T _SEND _{_EST} . Subsequent ETSI protocol message interaction (step 108).

If it is judged in step 102 that it is off-hook manually, the start timing is started (step 103); then go to step 105 and continue.

In step 109, if it is determined whether the terminal answers the call manually. If yes, start a voice call, and go to step 112 until the call ends. If not, then at T _N. _ _CH on-hook within the time range.

When a call enters a CID short message terminal, the answering process of the terminal is shown in Figure 7, which is as follows.

First, the call enters a CID short message terminal (step 201);

Then, the terminal shields the first ringtone to determine whether the incoming call is a short message platform call (step 202), and if not, proceeds to step 106, and the terminal continues to ring until the manual answer enters the voice call flow;

If the call is a messaging platform, the process proceeds to step 203, the terminal automatically answers the call; then, beginning from the hook delay T _SEND _ _EST EST message sent to the messaging platform (step 204);

Afterwards, the SMS platform receives the EST message, and the platform and the terminal perform subsequent message interactions. (Step 205), until the information interaction or the voice call ends (step 207).

Because the CID terminal has the same processing flow for the short message platform short message call and no CID terminal, and is compatible at the same time, it will not be described in detail here.

The present invention uses a CAS tone to distinguish a CID-free short message terminal from an ordinary call and an information call, so that the CID-free short message terminal can access the ETSI protocol short message platform, and can correctly send and receive short messages, and is fully compatible with the ETSI fixed network short message protocol. Through a series of strict time control, when a normal call enters a CID-free user, in the case of no answer, the call can be hung up in time, which avoids unnecessary costs for the calling user, thus completely solving the problem of CID-free user access. Problems with the SMS platform, and CID and non-CID SMS users are compatible with access to the SMS platform, and can exchange messages, expand fixed network SMS users, and provide a good platform for the smooth transition of the platform

The method of the present invention has been described above with reference to the drawings and embodiments, but the present invention is not limited to the embodiments described. Those skilled in the art can make various modifications to the specific embodiments without departing from the principles of the present invention.

Claims

Rights request

A method for enabling a non-CID short message terminal to receive information from a short message platform in a PSTN or ISDN network, the method comprising at least the following steps:

The terminal goes off-hook to answer a call, and waits for a special signal from the platform within a predetermined waiting time T _WAIT _ _eAS ;

Wherein, after receiving the special signal, the terminal sends a chain upload message to the platform after a predetermined sending time T is missed; if the terminal does not receive the special signal within the waiting time T _WAIT — _CAS , Then hang up.

2. The method according to claim 1, wherein said waiting time! ; ^ Is less than the sending time T SEND.ESTo

3. The method according to claim 1, wherein the off-hook response is an automatic off-hook response after a predetermined time T ALARM.TIME in a non-human answering state.

4. The method according to claim 1, wherein said on-hook is completed within the non-charging time specified by said PSTN or ISDN network when said special signal is not received.

The method according to claim 1, wherein said waiting time _T WA1T _ _s is calculated from the beginning of the response.

6. A method for making a non-CID short message terminal compatible with a CID short message terminal to receive information from a short message platform in a PSTN or ISDN network, the method comprising at least the following steps: the terminal goes off-hook to answer a call, and waits for a predetermined time Time T _WA1T _ wait for a special signal from the platform within the _CAS ;

After receiving the special signal, the terminal _{forwards the} signal at a predetermined sending time T _SBND — _EST . The platform sends an upload chain establishment message;

The off-hook response of the CID-less SMS terminal is an automatic off-hook response after a predetermined duration T ALARM-TIME; the off-hook response of the CID-SMS terminal is an automatic off-hook after determining that the incoming call is a short message platform call Answer.

7. The method according to claim 6, wherein the automatic off-hook response of the CID-less SMS terminal is performed in a non-human answering state.

8. The method of claim 6 further comprising the step of, if not the CID of the short message terminal does not receive a signal within the particular waiting time T _WAIT _ _s, then hang up.

9. The method according to claim 8, wherein said on-hook is completed within an uncharged time specified by said PSTN or ISDN network.

10. The method according to claim 6, wherein the waiting time L _A1T . _{S is} less than the sending time T SEND. EST o

11. The method according to claim 6, wherein said waiting time _τνΑΙΤ is calculated from said response.

12. A method for making a non-CID short message terminal compatible with a CID short message terminal to receive information from a short message platform in a PSTN or ISDN network, the method comprising at least the following steps: the terminal goes off-hook to answer a call, and sends the call at a predetermined time Send a chain upload message to the platform after time T _SBND . _EST ;

Wherein said non-CID message before sending terminal uploading link establishment message, waiting a predetermined internet transmits a unique waiting time _T WA1T _ _CAS, and after receiving the special signal transmission of the upload link setup message; And, the CID short message terminal directly sends an upload chain establishment message after the off-hook response.

13. The method according to claim 12, wherein the off-hook response is an automatic off-hook response after a predetermined time T ALARM-TIME in a non-human answering state.

14. The method of claim 12 further comprising the step of, if not the CID of the short message terminal does not receive a signal within the particular waiting time T _WAIT _ _s, then hang up.

15. The method according to claim 14, wherein said on-hook is completed within an uncharged time specified by said PSTN or ISDN network.

16. The method according to claim 12, wherein for the CID short message terminal, the sending time T SEND.EST 'J and the waiting time T WA IT.CAS j for the CID short message terminal, The sending time T SEND-EST is greater than the waiting time T WA lT.CAS o

17. The method according to claim 12, wherein said waiting time T _WAIT . _S is calculated from said response.