KR101285891B1 - Method for suspending and resuming delivery of content - Google Patents

Abstract

The present invention provides a method for stopping transmission and reception of content in a mobile communication terminal. The method may include receiving, by a DCD client in the mobile communication terminal, content from one or more channels from a DCD server; A DCD enabled client application in the mobile terminal using content over the one or more channels; Halting the reception unilaterally by the DCD client when a suspension condition associated with stopping content transmission and reception is met; The DCD client may send an error notification message to the DCD server in order to inform that an error occurs by unilaterally stopped by the terminal before the reception of the content is completed. Wherein the error notification message includes a first element indicating that content reception is stopped and a second element including a value indicating a successfully received byte; The error notification message may cause the DCD server not to retry transmission of the content until the channel is resumed.

Description

How to stop and resume content sending and receiving {METHOD FOR SUSPENDING AND RESUMING DELIVERY OF CONTENT}

The present invention relates to the transmission and reception of content, and more particularly, to stop and resume content transmission and reception.

Conventionally, when the terminal is receiving data such as content, for example, if the transmission of the content is stopped for various reasons, the priority of the content reception is lowered due to a voice call, for example, and thus the content. When the transmission of P is stopped, the server transmitting the content does not know about it, and thus, unnecessary network is kept, thereby wasting network resources.

In addition, even if the user of the terminal wants to stop the transmission of the content, the terminal could not notify the server of such fact because no proper procedure with the server for this was presented, and thus the server did not Since it is not known whether the transmission of the contents is stopped as a cause, there is a problem of unnecessarily attempting retransmission.

In addition, since the proper procedure has not been presented, it has been common for the terminal to discard even a part of the content already successfully received from the server. Therefore, even if it is desired to receive the content again later, the terminal has no choice but to receive the entire content again, thereby wasting network resources and increasing costs.

In addition, in view of the internal configuration of the terminal, the terminal consists of a lower receiving end and the upper application unit. In this case, when the lower receiving end of the terminal has successfully received the content from the server and notified the successful reception to the server, but has not yet delivered it to the application unit, when the content is stopped for an unexpected reason, the application Discards all of the content because it is incomplete. However, since the server knows that the terminal has already successfully received all of the content, the server cannot properly cope with a request for retransmission only in the future.

Accordingly, an object of the present invention is to provide a procedure that can stop or resume the transmission and reception of content.

In addition, another object of the present invention is to provide a procedure for resuming the transmission and reception of content, starting from the portion where the transmission and reception of content is not completed.

In order to achieve the above object, the present invention provides a method for stopping the transmission and reception of content in a mobile communication terminal.

The method may include receiving, by a DCD client in the mobile communication terminal, content from one or more channels from a DCD server; A DCD enabled client application in the mobile terminal using content over the one or more channels; Halting the reception unilaterally by the DCD client when a suspension condition associated with stopping content transmission and reception is met; The DCD client may send an error notification message to the DCD server in order to inform that an error occurs by unilaterally stopped by the terminal before the reception of the content is completed. Wherein the error notification message includes a first element indicating that content reception is stopped and a second element including a value indicating a successfully received byte; The error notification message may cause the DCD server not to retry transmission of the content until the channel is resumed.

The stop receiving step may also be performed when the DCD client receives a request from the DCD enable client application.

The request from the DCD enable client application may occur according to a user's request to stop transmitting and receiving content.

The first element of the error notification message is an " Error-code " element having a 'Delivery interrupted' value indicating that the transmission was interrupted, and the second element of the error notification message is a value representing a successfully received byte. It may be an "Errored-Parameter" element with.

The third element of the channel stop request message may be a "Channel-ID" element.

When the terminal is roaming and the channel metadata value is set to 'false', the stop condition may be satisfied.

The error notification message may be transmitted when the content transmission and reception stop procedure is not initiated by a request of the DCD enable client application.

On the other hand, in order to achieve the above object, the present invention provides a mobile communication terminal. The mobile communication terminal and the transceiver; Storage for storing a first DCD entity and a second DCD entity; It may include a controller for controlling the transceiver and the storage device. The first entity may use the digital content over one or more channels, and the second entity may stop the reception unilaterally based on meeting a condition for stopping the digital content reception. The second DCD entity transmits an error notification message to the DCD server to inform the DCD server that the terminal has been unilaterally stopped by the terminal before reception of the content is completed and an error occurs, and the channel stop includes an identifier for one or more channels. The request message may be transmitted to the DCD server, and the channel stop response message including the message-ID and the session-ID related to the digital content reception may be received from the DCD server. The error notification message includes a first element indicating that content reception is stopped and the second element including a value indicating a successfully received byte, wherein the error notification message is generated by the DCD server until the channel is resumed. It may be possible not to retry the transmission of content.

The present invention provides a procedure for stopping or resuming content transmission and reception, thereby preventing unnecessary waste of network resources and reducing costs.

In addition, the present invention allows to resume the transmission and reception of content from the portion where the transmission and reception of the content is not completed, thereby preventing unnecessary waste of network resources and to reduce costs.

1 is a flowchart illustrating a method according to a first embodiment of the present invention.
FIG. 2 is an exemplary view showing an example of the first embodiment shown in FIG. 1.
3 is a flowchart illustrating a method according to a second embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings an embodiment according to the present invention will be described in detail.

In the following description, the contents irrelevant to the main features of the embodiments of the present invention will not be described in detail, and the contents described in OMA-TS-DCD_Semantics-V1_0-20080307 will be used.

1 is a flowchart illustrating a method according to a first embodiment of the present invention, and FIG. 2 is an exemplary view showing an example of the first embodiment shown in FIG. 1.

As can be seen with reference to Figure 1, the first embodiment of the present invention provides a procedure to stop the transmission and reception of content. Specifically, it is as follows.

1) The DCD server 200 is transmitting content in a specific channel to the terminal 100 (S101).

2) In a situation where the DCD client 110 of the terminal receives the content in the specific channel, the DCD client 110 of the terminal 100 notifies the DCD server 200 of the error. It is determined whether it should be (S103).

In this case, the time for notifying the error is a case where the reception is stopped before the content is completely received. In other words, when the error is to be reported, the transmission of the content is stopped. .

That is, when the error should be reported is a case where a stop request is received from an application in the terminal 100. For example, as shown in FIG. 2, the DCD client 110 receives a stop request message for a specific channel, for example, a channel suspend request from a DCD enabled client application 120 in the terminal. In the case of receiving (S102). Here, the suspension request message, for example, Channel Suspend Request, includes an ID parameter for the specific channel. The stop request message may be received from an application other than the DCD enable client application 120. As such, when the DCD client 110 receives the stop request message from the DCD enable client application 120 or another application, the DCD client 110 may receive content from the DCD server 200. If the reception of the content is not completed, it is determined in step S103 that the error message should be transmitted.

Alternatively, the time for notifying the error is a case where a predetermined condition is satisfied in the terminal 100 and it is necessary to stop receiving content in the specific channel. For example, when the stop condition in the channel metadata stored in the terminal 100 is satisfied. More specifically, for example, a condition for stopping reception of a channel when roaming is set in the channel metadata, and the terminal 100 roams. As such, the reason for setting a condition to stop receiving a specific channel when roaming is that roaming generally pays a higher cost.

3) If it is determined that an error should be notified according to the determination (S103), the DCD client 110 notifies the DCD server 200 of the error. That is, as described above, if the reception is stopped before the content is completely received, the DCD client 110 notifies the error.

At this time, the notification of the error is achieved through the transmission of an error notification message, that is, an Error Notification Message as shown. Here, the error notification message includes an Error-Code element and an Errored-Parameter element. In the Error-Code element, a numeric code for an error occurred is written. Specifically, a numeric code representing a 'Delivery interrupted' error condition is written in the Error-Code element. The " Delivery interrupted " means that the transmission of the content has been interrupted due to various reasons, such as interruption of the content. On the other hand, in the Errored-Parameter element, the name, attribute, and value of the message found as an error are written. The "Bytes-Received" value may be further written in the Errored-Parameter element. "Bytes-Received" indicates successfully received bytes.

The error notification message may further include one or more of a Message-Type element, a Session-ID element, a Message ID element, an Error-Severity element, an Error-Description element, a Content-Provider-Error element, and an Applicatio-Error element. have. The Message-Type element represents a message type identifier of the error notification message, the Session-ID element represents a session identifier, the Message-ID element includes an identifiable identifier of the error notification message, and the Error The -Severity element indicates the effect of an error condition on processing the indicated message, the Error-Description element indicates the name of the error, and the Content-Provider-Error element indicates a content provider, i.e., from the DCD server 200. Represents an error code received, and the Application-Error element represents an error code received from the DCD enable client application 120.

4) Meanwhile, the DCD client 110 of the terminal 100 transmits a channel stop request message, that is, a channel suspend request message, to the DCD server 200 (S105). Here, the suspend request message, for example Channel Suspend Request, includes a Channel-ID element that specifies the ID for the particular channel. The Channel-ID element may specify IDs for one or more channels, where each ID is separated by a comma (,). If nothing is specified in the Channel-ID element, all channels except the emergency channel are affected. The stop request message may further include one or more of a Message-Type element, a Session-ID element, and a Message-ID element.

5) Upon receiving the stop request message from the terminal 100, the DCD server 200 transmits a channel stop response message, that is, a channel suspend response message, to the terminal 100 (S106). The channel suspend response message, that is, the channel suspend response message includes a status element including IDs and status values of the channels for which the suspension is requested. The channel stop response message may further include a Message-Type element, a Session-ID element, and a Message-ID element.

As can be seen from the above description, the first embodiment according to the present invention wants to stop the content in a specific channel from being received from the DCD server 200, or when it is stopped for an unexpected reason, the DCD server ( 200) to be correctly informed.

3 is a flowchart illustrating a method according to a second embodiment of the present invention.

Referring to FIG. 3, as can be seen, the second embodiment according to the present invention can resume the shop specific channel after stopping the reception of the content in the specific channel as shown in FIGS. 1 and 2. And it is characterized in that to be able to take over the suspended content.

1-6) Since the processes of S201 to S206 shown are the same as the processes of S101 to 106 in FIGS. 1 and 2, the description thereof will not be repeated.

7) When it is desired to resume reception of the suspended specific channel, the DCD client 110 of the terminal 100 transmits a channel resumption request message, that is, a Channel Resume Request message, to the DCD server 200 ( S207). Specifically, when the user of the terminal 100 wishes to resume, although not shown, the DCD enable client application 120 sends a channel resume request message, that is, a Channel Resume Request message, to the DCD client 110. The DCD client 110 transmits the channel resume request message to the DCD server 200. In this case, the channel resume request message includes a Channel-ID element that designates an ID for the specific channel. The Channel-ID element may specify IDs for one or more channels, where each ID is separated by a comma (,). If nothing is specified in the Channel-ID element, all channels except the emergency channel are affected. The channel resume request message may further include one or more of a Message-Type element, a Session-ID element, and a Message-ID element.

8) Upon receiving the channel resume request message from the terminal 100, the DCD server 200 transmits a channel resume response message, that is, a channel resume response message, to the terminal 100 (S208). The channel resume response message, that is, a channel resume response message, includes a status element including IDs and status values for the channels. The channel resume response message may further include a Message-Type element, a Session-ID element, and a Message-ID element.

9) On the other hand, the terminal 100 may request to resume the reception of the content is stopped after the request to resume the channel. To this end, the DCD client 110 of the terminal 100 transmits a content repair request message, that is, a Content Repair Request message to the DCD server 200 (S209). In this case, the content recovery request message includes a Failed-ContentID element specifying an ID for the stopped content and a Byte-Received element indicating a previously successfully received byte. Additionally, the content recovery request message may further include one or more of a Message-Type element, a Session-ID element, a Message-ID element, a Failed-Message-ID element, and a Channel-ID element.

10) The DCD server 200 receiving the content repair request message transmits a content repair response message, that is, a Content Repair Response message, to the terminal 100 (S210). The Content Repair Response message includes a Content-Package element indicating a content package requested for repair. Additionally, the content recovery response message may further include one or more of a Session-ID element, a Message-Type element, and an Alternate-Delivery element that specifies the name of an alternative bearer supported by the DCD client 110.

11) The DCD server 200 checks the ID of the interrupted content and previously transmitted bytes based on the Failed-ContentID element and the Byte-Received element included in the content resume request message. Thereafter, the remaining bytes of the content are transmitted to the terminal 100 (S211).

As can be seen from the above, in the past, even if the transmission of the content is interrupted, it was not possible to know in advance which portion of the content the DCD server 200 has successfully transmitted to all the terminals. In the second embodiment, the terminal 100 informs the DCD server 200 of how far the terminal 100 has successfully received, thereby facilitating the resumption of the content.

The method according to the embodiments of the present invention described so far may be implemented in software, hardware, or a combination thereof. For example, a method in accordance with the present invention may be stored in a storage medium (e.g., mobile terminal internal memory, flash memory, hard disk, etc.) ≪ / RTI > in a software program that can be executed by a computer.

1 to 3, the terminal 100 is illustrated as including a DCD client 110 and a DCD enabled client application 120. Dynamic Content Delivery) has been described as limited, but it should be noted that it can be applied to any technology that can receive content through a mobile communication network.

In addition, the terminal 100 illustrated in FIGS. 1 to 3 means all devices capable of receiving content through a mobile communication network, for example, a user device (UE), a mobile phone, a cellular phone, a smart phone, a PDA phone, and the like. do.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, May be modified, modified, or improved.

100: terminal 110: DCD Client
120: DCD Enabled Client Application
200: DCD server

Claims (10)

As a method for resuming content transmission and reception,
The method is performed by a mobile communication terminal,
Receiving, by the mobile communication terminal, content through at least one channel between a dynamic content delivery (DCD) client and a DCD server in the mobile communication terminal;
When the mobile communication terminal roams outside the home network, if the content receiving stop condition is satisfied, the DCD client locally suspends a transaction for receiving the content;
The DCD client sending an error notification message to the DCD server comprising a first element indicating that reception of the content on the at least one channel is stopped and a second element indicating a number of bytes received;
The DCD client sending a channel resume request message to the DCD server to resume the at least one channel, the channel resume request message including a first element for specifying an ID for the at least one channel -;
The DCD client receiving a channel resume response message from the DCD server; And
Receiving, by the DCD client, the stopped content from the DCD server. The method of claim 1, wherein the channel resume request message is a Channel Resume Request message, and the channel resume response message is a Channel Resume Request message. The method of claim 1, wherein the first element of the channel resume request message is a "channel-ID" element. The method of claim 1, wherein the second element of the channel resume response message is a " status " element. 2. The method of claim 1, wherein receiving the stopped content indicates receiving the content from a portion that has been successfully received.
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