JP4809174B2 - Communication apparatus and data transmission method - Google Patents

Description

  The present invention relates to a transmission device that is provided in a mobile phone or the like and transmits data to a processing device, a communication device including the transmission device and the processing device, and a method of transmitting the data in the communication device.

  In recent years, communication devices such as mobile phones have a tendency to increase the amount of data that needs to be processed as functions and data rates increase. For this reason, a communication device such as a mobile phone includes a processing device and a transmission device that transmits data to the processing device in order to reduce the data processing load of the processing device and perform data processing at high speed. Research and development are underway.

In the communication device, a certain communication bandwidth is secured by performing quality of service (QoS) control for smooth and reliable data processing, thereby ensuring a certain communication quality. Data transmission and processing are performed (for example, see Patent Document 1). According to Patent Document 1 described above, by using a priority based on information with high importance in a transmission destination system of transmission data, transmission order is scheduled and transmission data is transmitted.
JP-A-7-202977 Japanese Laid-Open Patent Publication No. 2005-10956

  However, since the prior art described in Patent Document 1 described above has a predetermined priority based on highly important information in a transmission destination system of transmission data, a transmission apparatus that transmits data is involved. For control information of data processing, processing may be postponed. Here, the data processing control information related to the processing device that transmits data is information for controlling the communication speed and the communication band, and data communication is established based on this information. In this case, it is better to process the control information as soon as possible in the device itself.

  Further, the communication device of Patent Document 1 does not consider the processing load of the route and the transmission destination, and transmits data to the transmission destination without grasping the status of the processing load. In addition, the number of transmission data increases, and a large amount of data continues to be transmitted without considering the processing load status, which may increase the load on a specific route and the load on the destination. As a result, the processing load increases, and it takes time to process the transmission data.

  Therefore, not only control information that must be processed as soon as possible is postponed, but more time is required until the control information is processed due to an increase in the processing load of the route and destination. Since it is not easy to control the communication speed and the communication band, stable data communication cannot be ensured.

  Therefore, as a technique that takes into account the route in the information processing apparatus such as a communication apparatus and the processing load of the transmission destination, there is a technique such as that described in Patent Document 2 described above. According to Patent Document 2, each route in the communication device uses an allocation priority that distributes each request to be transmitted and data to each route by allocating the data to a specific route, and updates the allocation priority in each route. Is performed based on the processing load at each route and destination, and the allocation priority at each previous route.

  However, in Patent Document 2, the status of the processing load in each path is grasped by periodically making a test request. Therefore, even when the load situation in each route is bad, the above-described test request is periodically performed on each route, and the allocation priority is also periodically updated. Since the processing load generated at the transmission destination further increases, stable data communication cannot be performed.

  Further, even if the communication device in Patent Document 1 grasps the status of processing load of each route and transmission destination and considers the transmission and processing of control information by updating the priority, the schedule is once set. Then, since data is only transmitted in the set order, it may be difficult to ensure the communication speed and communication band by processing the control information, and stable data communication cannot be ensured quickly.

  Furthermore, no consideration is given to a retransmission request for data that must be transmitted from the transmission destination. Therefore, if a lot of highly important information is generated in the transmission destination system, if the control information is postponed or not processed due to a delay due to an increase in processing load, a data re-transmission request will be generated, and re-transmission will occur. Processing related to the request must be performed, and not only an extra processing burden is imposed on the processing apparatus, but also the influence of processing delay cannot be minimized.

  In the first place, Patent Document 1 and Patent Document 2 are common in that priority is used, but Patent Document 2 only knows the load status of each path and destination, and processes each data. Thus, no consideration is given to the importance of the effect that each data has on the inside and outside of the communication device, for example, that the communication band can be secured. For this reason, each request and data to be transmitted to each path is only allocated according to the allocation priority, and the transmission order of each request to be transmitted and data is not considered.

  The present invention has been made in view of such circumstances. The purpose of the present invention is to preferentially and reliably give priority to data that must be processed quickly as the processing load in the communication apparatus increases. An object of the present invention is to provide a communication device that can quickly establish stable data communication by being able to process.

In order to solve the above problems, the transmit apparatus according to the present invention includes a controller for selecting data a higher priority than the reference priority, and a transmission unit transmitting the selected data, The control unit updates the reference priority so that the reference priority becomes higher as the remaining time until the data retransmission time calculated based on the processing time of the data to be transmitted decreases. And

  The transmission device compares the priority of the data with the reference priority, selects data having the priority higher than the reference priority, and transmits the selected data to the processing device, thereby selecting the data to be processed. .

In the communication apparatus according to the present invention, the communication comprising a transceiver for transmitting and receiving data, a processing device for processing the data, and a transmitting device for transmitting the data to the processing unit from the transceiver device In the apparatus, the transmission device includes a control unit that selects data having a priority higher than a reference priority, and a transmission unit that transmits the selected data to the processing device, and the control unit includes the transmission The reference priority is updated so that the reference priority becomes higher as the remaining time until the data retransmission time calculated based on the processing time of the data to be reduced decreases .

  Since the communication device does not update the priority of the data but updates only the reference priority, the processing load of the communication device is reduced.

The communication device according to the present invention further includes a measurement unit that measures the processing time of the data, a reception unit that receives data from the transmission / reception device, and a reception unit that receives data from the processing device, The measurement unit is configured to measure a processing time from when the data is received by the reception unit to when the reception unit receives the data processed by the processing device, and retransmission of data in the transmission / reception device A remaining time calculating unit that calculates a remaining time until the time from the processing time .

Transmitted to the data received by the processing equipment, accurately from the processing time measured from the processed data, the time that must perform retransmission processing, and retransmission is not to occur the data is transmitted to the processing device, processing device Can grasp the time required to receive data indicating that the data has been processed.

Data transmission method according to the present invention, the data received by the communication device, the transmitting device in the communication device to the processing device for processing the data, a data transmission method for transmitting the data, the reference priority The step of selecting high priority data, the step of transmitting the selected data to the processing device, and the remaining time until the retransmission time of the data calculated based on the processing time of the data to be transmitted is small Accordingly, there is provided a data transmission method comprising the step of updating the reference priority so that the reference priority becomes higher .

Furthermore, before Symbol transmission data, it can transmit data relating to bandwidth allocation communication in preference.

  Stable data communication can be established by preferentially transmitting the data related to data processing in the communication device, so that the processing device preferentially processes the data.

  According to the present invention, when performing data transmission and data processing in a communication device, it is possible to process control information that must be processed promptly, thereby ensuring a communication band and a communication speed. It is possible to quickly establish stable data transmission.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a transmission apparatus A according to an embodiment of the present invention. The transmission device A is provided in a communication device such as a mobile phone, and controls the packet information (for example, TCP packet) received by the transmission / reception device C to the processing device B and the data processing request in the processing device B Information is transmitted to the processing device B, data processed by the processing device B is received, and transmitted to the transmission / reception device.

  The transmission device A receives (inputs) data from the transmission / reception device C, receives the data output from the reception unit 11, and inputs the data priority (data to the processing device B to the processing device B). Priority grasping unit 12 for grasping the processing priority at the time of transmitting the data, the data is transmitted to the processing device B after the data is received by the transmitting device A, and the data is transmitted to the transmitting device A after the processing device B processes the data. Then, the data output from the measuring unit 13 and the priority grasping unit 12 for measuring the processing status indicating the processing load until the transmission device A receives the processed data is input, and among the input data Control unit 14 for selecting data to be transmitted to processing device B with priority, transmission unit 15 for transmitting data selected by control unit 14, and reception for receiving processed data from processing device B. The communication unit 16 is provided.

From the time (t ₁ ) when the receiving unit 11 received (received) the data and the time (t ₂ ) when the receiving unit 16 received the data processed by the processing device B, the measuring unit 13 A processing time measuring unit 132 for measuring a processing time (t ₁ -t ₂ ) of data, a processing time of the data measured by the processing time measuring unit 132, and data is retransmitted from a communication base station or the like to the transmitting / receiving device And a remaining time calculating unit 131 that calculates a remaining time from a retransmission time until a data retransmission request is issued from the transmitting / receiving device to the communication base station or the like.

  The control unit 14 responds to the processing state indicated by the processing time of the data measured by the processing time measuring unit 132 output from the measuring unit 13 or the remaining time until the retransmission time of the data calculated by the remaining time calculating unit 131. The reference priority update unit 141 that updates the reference priority, the priority comparison unit 142 that compares the priority of the data with the reference priority output from the reference priority update unit 141, and the priority comparison unit 142 perform comparison. The selection unit 143 selects data having a priority higher than the reference priority.

  Next, operations of the transmission device A, the processing device B, and the transmission / reception device C configured as described above will be described. When data is received from the base station, the data is input to the transmission / reception device C. When the transmission device A receives data from the transmission / reception device C, the transmission device A selects data to be transmitted to the processing device B based on the data, and performs an operation of transmitting the selected data. FIG. 2 is a flowchart showing the selection of data to be transmitted performed by the transmission apparatus A and the flow of transmitting data. The transmission apparatus A receives the data received by the transmission / reception apparatus C at the reception unit 11. At this time, the reception unit 11 acquires the time (reception time) at which the data is received.

  Next, the priority grasping unit 12 grasps the priority according to the type of data output from the accepting unit 11, and transmits the data together with information on the priority of the data to the control unit 14 (S2 in FIG. 2). Specifically, the data type includes control information indicating a processing request such as stream open to the processing device B, and includes data related to connection with the base station, and packets composed of the data. The priority of data related to securing the bandwidth of communication related to the connection with the base station is set higher than the priority of other data.

  The measurement unit 13 starts measuring the processing status of each data at the same time as the data reception time is input from the reception unit 11. At this time, the load processing status uses the processing time of the data measured by the processing time measuring unit 132 output from the measuring unit 13 and the remaining time until the retransmission time of the data calculated by the remaining time calculating unit 131. Instead of measuring the processing status only with the transmitting device A, the processing time including the processing status of the processing device B and the path between the transmitting device A and the processing device B is measured. Rather, it is possible to select and transmit appropriate data in consideration of the processing status of the transmission device A and the processing device B. In addition, since it is possible to accurately grasp the data processing status by starting the measurement at the same time as the data reception time is input, the path between the transmitting device A, the transmitting device A and the processing device B In addition, it is possible to accurately grasp each processing time in the processing apparatus B, and it is possible to grasp a place where the processing state is bad.

  After the processing time measurement unit 132 in the measurement unit 13 receives the data from the reception unit 11 and the processing device B receives the data from the transmission device A, the processing unit B processes the data, and then the reception unit 16 receives the data. The processing time until this is measured (S31 in FIG. 2).

  Further, the remaining time calculating unit 131 in the measuring unit 13 calculates the data retransmission time and the remaining time from the data processing time measured by the processing time measuring unit 132 to the retransmission (S32 in FIG. 2). As a result, since the retransmission time can be taken into account, the necessary data related to securing the communication band is preferentially transmitted from the transmitting apparatus A by the retransmission time, so that the processing is surely performed by the retransmission time. Can do. Further, since the accurate processing time is measured by the processing time measuring unit 132, it is possible to grasp the accurate time at which retransmission occurs. As a result, data can be transmitted before retransmission processing occurs.

  The reference priority update unit 141 in the control unit 4 grasps the processing status of the processing device based on the time measured by the measurement unit 13 and updates the reference priority (S3 in FIG. 2). Here, as a method of grasping the processing status, according to FIG. 2, the processing time from the reception time of the previous data until the reception of the confirmation response is measured (S31), and the remaining time is determined from the data retransmission time and processing time. The time can be calculated (S32), and the reference priority can be updated according to the remaining time (S33).

  Further, in updating the reference priority, for example, the update is performed using the following expression (1). At this time, P is the reference priority updated according to the remaining time, P ′ is the reference priority before update, T is the remaining time, and A is the correction coefficient. At this time, if the remaining time calculated when data is received from the processing device B has not changed compared to the remaining time calculated by the data received by the receiving unit 16 immediately before that, or the processing status is good If there is sufficient remaining time, the reference priority is not updated. As a result, the reference priority update unit 141 does not always have to update the reference priority every time data is received from the processing device B, and the processing status changes due to the decrease or increase in the remaining time. Therefore, the processing load of the priority update unit 141 can be reduced, and the processing load of the transmission device A (processing device A) can be reduced. On the other hand, if the treatment load situation is bad, it is possible to further narrow down the control information with high priority by adjusting the value of the correction coefficient A, and it is possible to select only the data that you want to send and process really quickly it can.

P = A * P '/ T (1)
Next, the priority comparison unit 142 in the control unit 14 compares the reference priority information output from the reference priority update unit 141 with the priority information of data output from the priority grasping unit 12. (S4 in FIG. 2).

  Further, the selection unit 143 in the control unit 14 selects data having a priority higher than the reference priority from the data compared with the reference priority by the priority comparison unit 142 (S5 in FIG. 2).

Here, the control unit 14 performs processing for comparing and selecting data to be transmitted separately to the priority comparison unit 142 and the selection unit 143, so that the processing status is compared with the remaining time in the reference priority comparison unit 142. If the reference priority is not updated when there is no change or when the processing status is good and there is sufficient remaining time, the priority of the newly received data is compared with the reference priority. To do. In addition, when the processing status deteriorates, for example, from a predetermined value, the reference priority is updated, and becomes larger than the value of the previous reference priority, the newly received data and higher than the previous reference priority Only priority data will be selected. This not only minimizes the priority transmission using the reference priority and priority, but also the data that you want to send quickly from the data selected using the previous reference priority, that is, the higher priority. The data can be narrowed down. In addition, since the processing load of the reference priority comparison unit 142 is reduced, the priority processing load of the transmission apparatus A can be reduced. Thereafter, the selection unit 143 transmits the selected data to the transmission unit 15.

  The transmission unit 15 transmits the selected data to the processing device B. When the processing status transmitted from the measurement unit 13 is not bad, that is, when the processing time is short, or when the remaining time until the retransmission time is sufficient, the selection unit 143 is set because the reference priority is set low. Although the number of data selected in (2) increases, the processing device B can perform processing without taking time because the processing load is small.

  On the other hand, when the processing status is bad, or when a long processing time is required and the remaining time until the retransmission time is small, the reference priority is set high, so the data selected by the selection unit 143 Is limited to data having a priority higher than the reference priority, that is, data related to securing a communication band. At this time, data to be processed promptly is preferentially transmitted to the processing apparatus B. In addition, when the remaining time until the retransmission time is further reduced, the reference priority is updated and further increased. Therefore, the data having to be transmitted with higher priority from the selected high priority data. Select by narrowing down. Then, the selected data is immediately transmitted to the processing device B. Then, by processing the transmitted data by the processing device B, it is possible to narrow down the priority data as soon as possible even when the communication rate between the transmission device and the processing device and the processing status of the processing device are bad. Therefore, stable data communication is possible. Then, the processing device B outputs the data to the transmission device A after processing the data sent from the transmission device included in the transmission device A.

  The transmission device A transmits data to the transmission / reception device C, and the transmission / reception circuit C transmits data to the antenna D, whereby data transmission is performed before the retransmission time.

  In this way, the transmitting apparatus A selects data to be transmitted by using the priority of data and the reference priority according to the processing status. When the processing status is good, it is possible to transmit the selected data configuration as it is, so that the processing load on the transmission unit 15 is reduced at the time of transmission to the processing device B, leading to a reduction in the load on the transmission device A. On the other hand, when the processing status is poor, priority is given to data with a priority higher than the reference priority, that is, data necessary for securing the communication band according to the processing status of the path between the transmitting device A and the processing device B. If the processing status further deteriorates, the reference priority is updated and becomes higher. Therefore, further narrow down the data that should be transmitted with priority from the selected high priority data. select. Then, by immediately transmitting the selected data to the processing device B, it is possible to process the control information even when the processing status is poor in securing the communication rate and the communication bandwidth between the paths between the transmitting device A and the processing device B. Therefore, stable data communication is possible and smooth data processing can be performed.

  Furthermore, by using the data retransmission time, the transmitting apparatus A can use an accurate remaining time until the retransmission processing occurs, and grasps the time that the data must be sent before the retransmission processing occurs. Can do. Specifically, it is possible to derive the time that is considered necessary from the processing time to transmission from the transmission device A to the processing device B and reception of the processed data. From this processing time to the data retransmission processing The remaining time value that must be sent can also be accurately grasped. Therefore, it is possible to process data so as not to cause data re-transmission processing by considering an accurate processing time. Therefore, useless retransmission processing can be prevented, and not only the data processing burden on the processing apparatus B but also the processing burden on the transmission apparatus A can be reduced, and communication resources can be used effectively.

  As mentioned above, although embodiment of this invention has been described with reference to drawings, a specific structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.

For example, although the transmission apparatus and the processing apparatus are separately provided in the present embodiment, both can be provided.

It is a block diagram which shows the structure of the transmitter which concerns on one Embodiment of this invention. It is a flowchart which shows the flow of operation | movement of the transmission apparatus shown in FIG. 1 with which the transmission apparatus A shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Reception part, 12 ... Priority grasping part, 13 ... Measurement part, 131 ... Remaining time calculation part, 132 ... Processing time measurement part, 14 ... Control part, 141 ... Reference priority update unit, 142... Priority comparison unit, 143... Selection unit, 15.

Claims (2)

In a communication apparatus comprising: a transmission / reception device that transmits and receives data; a processing device that processes the data; and a transmission device that transmits the data from the transmission / reception device to the processing device.
The transmitter is
A receiving unit for receiving data from the transmitting / receiving device;
A control unit that selects data having a higher priority than the reference priority;
A transmission unit for transmitting the selected data to the processing device;
A receiving unit for receiving data from the processing device;
A measuring unit for measuring the processing time of the data ,
The measuring unit is
A processing time measuring unit for measuring a processing time from when the data is received by the receiving unit until the receiving unit receives the data processed by the processing device;
A remaining time calculation unit for calculating a remaining time until a retransmission time of data in the transmission / reception device from the processing time,
The controller is
The communication device, wherein the reference priority is updated so that the reference priority becomes higher as the remaining time from the processing time of the data to be transmitted to the retransmission time of data calculated decreases. A data transmission method in which a transmitting / receiving device in a communication device receives data, a transmitting device in the communication device receives the data from the transmitting / receiving device, and transmits the data from the transmitting device to a processing device that processes the data Because
The transmitting device is
Receiving data from the transceiver device;
Selecting data with a higher priority than the reference priority;
A step that sends the selected data to the processing unit,
Receiving the data processed by the processing device;
Measuring the processing time from receiving the data to receiving the data processed by the processing device;
Calculating a remaining time until a data retransmission time in the transmission / reception apparatus from the processing time;
Updating the reference priority so that the reference priority becomes higher as the remaining time from the processing time of the data to be transmitted to the retransmission time of data calculated decreases;
A data transmission method comprising:

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