CN110011925B - SDU processing method and communication equipment - Google Patents

Abstract

Embodiments of the present invention provide an SDU processing method and a communication device. The method includes: by judging whether the SDU of the RLC layer is the SDU of the TM or the SDU of the UM; if the SDU of the RLC layer is the SDU of the TM or the SDU of the UM , and the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface, the SDU of the RLC layer buffered by the RLC layer is deleted. Therefore, the cache space of the RLC layer can be saved.

Description

A kind of processing method and communication device of SDU

technical field

The present invention relates to the field of communication technologies, and in particular, to a processing method and a communication device for a service data unit (Service Data Unit, SDU).

Background technique

At present, the Radio Link Control (RLC) layer in the communication system can include three working modes, namely Transparent Mode (TM), Unacknowledged Mode (UM) and Acknowledged Mode (Acknowledged Mode). , AM), wherein, different working modes have different processing, for example: for the SDU of TM, the SDU is not processed at the RLC layer, and is directly sent to the bottom layer; for the SDU of UM, the receiver does not need to confirm, and does not retransmit; For AM SDUs, the receiving end needs to confirm, and for SDUs that the receiving end does not receive, the transmitting end needs to trigger retransmission. However, no matter which working mode is used, the buffer (buffer) of the RLC layer will buffer the SDU, which causes the buffer occupation of the RLC layer to be too large.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide an SDU processing method and a communication device, so as to solve the problem that the buffer of the RLC layer occupies too much.

In order to solve the above-mentioned technical problems, the present invention is implemented as follows: a method for processing SDU, comprising:

Determine whether the SDU of the RLC layer is the SDU of the TM or the SDU of the UM;

If the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, the SDU of the RLC layer buffered by the RLC layer is deleted.

In a first aspect, an embodiment of the present invention further provides a method for processing an SDU, including:

Determine whether the SDU of the RLC layer is the SDU of the TM or the SDU of the UM;

If the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, the SDU of the RLC layer buffered by the RLC layer is deleted.

In a second aspect, an embodiment of the present invention provides a communication device, including:

The judgment module is used to judge whether the SDU of the RLC layer is the SDU of the TM or the SDU of the UM;

A deletion module, configured to delete the RLC layer cached by the RLC layer if the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface SDU removed.

In a third aspect, an embodiment of the present invention provides a communication device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program being executed by the processor When executed, the steps in the SDU processing method provided by the embodiment of the present invention are implemented.

In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, implements the processing of the SDU provided by the embodiment of the present invention steps in the method.

In the embodiment of the present invention, it is judged whether the SDU of the RLC layer is the SDU of the TM or the SDU of the UM; if the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and the SDU of the RLC layer is sent to the bottom layer or the SDU of the UM If it has been sent on the air interface, the SDU of the RLC layer buffered by the RLC layer is deleted. Therefore, the cache space of the RLC layer can be saved.

Description of drawings

1 is a structural diagram of a network system to which an embodiment of the present invention can be applied;

2 is a flowchart of a method for processing an SDU provided by an embodiment of the present invention;

3 is a flowchart of another SDU processing method provided by an embodiment of the present invention;

4 is a flowchart of another SDU processing method provided by an embodiment of the present invention;

5 is a structural diagram of a communication device provided by an embodiment of the present invention;

6 is a structural diagram of another communication device provided by an embodiment of the present invention;

FIG. 7 is a structural diagram of another communication device provided by an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to FIG. 1, FIG. 1 is a structural diagram of a network system to which an embodiment of the present invention can be applied. As shown in FIG. 1, it includes a user terminal 11 and a base station 12, wherein the user terminal 11 may be user equipment (User Equipment, UE ), for example: can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a personal digital assistant (PDA), a mobile Internet Device (MID) or a wearable It should be noted that the specific type of the user terminal 11 is not limited in the embodiment of the present invention. The user terminal 11 may communicate with the base station 12 , for example, SDU transmission is performed between the user terminal 11 and the base station 12 . The above-mentioned base station 12 may be a base station of 5G and later versions (for example: gNB, 5G NR NB), or a base station in other communication systems, or referred to as Node B, Evolved Node B, or other words in the field, as long as the For the same technical effect, the base station is not limited to specific technical terms. It should be noted that, in the embodiment of the present invention, only a 5G base station is used as an example, but the specific type of the base station 12 is not limited.

Please refer to FIG. 2. FIG. 2 is a flowchart of an SDU processing method provided by an embodiment of the present invention. As shown in FIG. 2, the following steps are included:

Step 201: Determine whether the SDU of the RLC layer is the SDU of the TM or the SDU of the UM.

Step 201 may be to determine whether the SDU of the RLC layer (also referred to as RLC SDU) is the SDU of the TM or the SDU of the UM according to the working mode of the RLC layer. For example, if the current working mode of the RLC layer is TM, it can be judged that the SDU of the RLC layer is a TM SDU, or the current working mode of the RLC layer is UM, then it can be judged that the SDU of the RCL layer is a UM SDU.

In addition, in this embodiment of the present invention, the SDU of the RLC layer may be any SDU of the RLC layer, and the SDU of the RLC layer may be an SDU including multiple segments, or an SDU that is not segmented.

Step 202: If the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface, then the SDU of the RLC layer buffered by the RLC layer is stored. delete.

Step 202 may include: if the SDU of the RLC layer is the SDU of the TM, and the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface, deleting the SDU of the RLC layer buffered by the RLC layer; And it may further include: if the SDU of the RLC layer is the SDU of the UM, and the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface, deleting the SDU of the RLC layer buffered by the RLC layer.

The above-mentioned SDU of the RLC layer is sent to the bottom layer, and the SDU of the RLC layer is sent from the RLC layer to the bottom layer; the SDU of the RLC layer has been sent on the air interface, and the SDU of the RLC layer has been delivered from the communication device to the air interface, for example : The bottom layer of the communication device has completed sending the SDU, or the radio frequency unit of the communication device has completed sending the SDU, etc. In addition, the SDU of the RLC layer in step 202 may be the entire SDU, eg, an unsegmented SDU, or the SDU of the RLC layer in step 202 may be one or more segments of the SDU. In addition, if one or more SDUs of the RLC layer are sent to the bottom layer or have been sent over the air interface, step 202 may be to delete all the segments of the SDU buffered by the RLC layer, or delete the corresponding segment (only delete the SDUs sent to the RLC layer). the lower layer or a segment that has been sent over the air).

In addition, the above-mentioned bottom layer may be a protocol layer below the RLC layer, such as a media access control (Media Access Control, MAC) layer.

It should be noted that step 201 may be executed before the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, or step 201 may be executed when or after being sent to the bottom layer, etc. The embodiments of the present invention are not limited.

Through the above steps, the SDU of the TM or the SDU of the UM, after the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, the SDU of the RLC layer buffered by the RLC layer can be deleted, thereby saving the RLC layer. Cache space, thereby ensuring the normal delivery of other data at the RLC layer. And since TM and UM do not need to be retransmitted, deleting the SDU buffered by the RLC layer will not affect the transmission performance of the communication device. In addition, if the SDU of the RLC layer is not the SDU of the TM, nor is the SDU of the UM, the process can be ended.

In addition, because in the embodiment of the present invention, after the SDU is sent to the bottom layer or has been sent on the air interface, the SDU of the RLC layer buffered by the RLC layer can be deleted, so that in the case of poor network conditions, the SDU can be deleted by deleting The SDU stored in the RLC layer can avoid the congestion of the buffer of the RLC layer, so as to improve the processing performance of the RLC layer.

The above method can be applied to a communication device, and the communication device can be a user terminal or a base station, etc., which is not limited in this embodiment of the present invention, and the above method can be applied to a 5G system, but is not limited, as long as it can achieve basically the same function , applicable to other communication systems, such as: 4G or 6G systems or other communication systems that apply system information blocks, etc.

In this embodiment, it is determined whether the SDU of the RLC layer is the SDU of the TM or the SDU of the UM; if the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and the SDU of the RLC layer is sent to the bottom layer or has been If it is sent on the air interface, the SDU of the RLC layer buffered by the RLC layer is deleted. Therefore, the cache space of the RLC layer can be saved.

Please refer to FIG. 3. FIG. 3 is a flowchart of another SDU processing method provided by an embodiment of the present invention. As shown in FIG. 3, the following steps are included:

Step 301: Determine whether the SDU of the RLC layer is the SDU of the TM or the SDU of the UM.

Wherein, step 301 may be performed under the condition that the indication information sent by the upper layer indicating that the SDU of the RLC layer is discarded is not received.

Step 302: If the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and all the data of the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface, the RLC buffered by the RLC layer is stored. All data of layer SDU is deleted.

Wherein, the entire data of the SDU here may be understood as the SDU that has not been segmented.

Through step 302, it can be realized that for the unsegmented SDU, if the SDU is a TM SDU or a UM SDU, after the SDU is sent to the bottom layer or has been sent over the air interface, the RLC layer will buffer the deletion of the SDU, thereby saving RLC The cache space of the layer, thereby ensuring the normal delivery of other data in the RLC layer.

It should be noted that step 302 can be replaced, for example, step 302 can be replaced with the following steps:

If the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and at least one segment of the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, the at least one segment of the SDU buffered by the RLC layer is sent to the bottom layer. Segment deletion.

Through this step, for a segmented TM SDU or UM SDU, after one or more segments are sent to the bottom layer or have been sent over the air interface, the segments that have been sent to the bottom layer or have been sent over the air interface can be sent to the bottom layer. Delete, to achieve the effect of saving cache space, thereby ensuring the normal delivery of other data at the RLC layer. For example: an SDU includes segment a, segment b and segment c. The above steps may be when segment a is sent to the bottom layer or has been sent over the air interface, and segment a buffered by the RLC layer may be The segment a and the segment b are sent to the bottom layer or have been sent on the air interface, and the segment a and the segment b are buffered by the RLC layer.

In this embodiment, through the above steps, it is possible to delete all the information that has been sent to the end or that has been sent in the air interface in the RLC layer cache, which is executed without receiving the instruction information sent by the upper layer indicating that the SDU of the RLC layer is discarded. Data (unsegmented SDU) or segmentation can save cache space and ensure the normal delivery of other data at the RLC layer. In addition, since the upper layer may not need to send the indication information, the internal transmission of the communication device can be saved, so as to reduce the power consumption of the communication device.

Please refer to FIG. 4. FIG. 4 is a flowchart of another SDU processing method provided by an embodiment of the present invention. As shown in FIG. 4, the following steps are included:

Step 401: Determine whether the SDU of the RLC layer is the SDU of the TM or the SDU of the UM.

Step 402: In the case where the RLC layer receives the indication information sent by the upper layer indicating that the SDU of the RLC layer is discarded, if the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and the SDU of the RLC layer is sent When it reaches the bottom layer or has been sent on the air interface, the SDU of the RLC layer buffered by the RLC layer is deleted.

It should be noted that, in this embodiment, the execution sequence of receiving the above-mentioned indication information and judging whether the SDU of the RLC layer is a TM SDU or a UM SDU is not limited, that is, judging the working mode of the SDU and receiving the high-level abandonment instruction There is no strict chronological order. For example, when the above indication information is received, it can be judged whether the SDU of the RLC layer is a TM SDU or a UM SDU, or the RLC layer can first judge whether the SDU is a TM SDU or a UM SDU, and then When the RLC layer receives the instruction information sent by the higher layer indicating that the SDU of the RLC layer is discarded, the SDU is discarded.

Wherein, the above-mentioned high layer may be a protocol layer located before the RLC, and the above-mentioned indication information may be the indication information of the high-layer instructing the RLC layer to discard the SDU of the above-mentioned RLC layer. For example, due to different network conditions or the conditions of the communication device itself, the upper layer needs to instruct the RLC layer to discard the SDU of the RLC layer and send the indication information.

Through the above steps, it can be realized that the deletion operation is performed after receiving the instruction information sent by the upper layer to discard the SDU of the RLC layer. Since the deletion operation is performed based on the instruction information sent by the higher layer, the deletion of the RLC layer can be improved. Flexibility of cached SDUs. Because the function of the upper layer is more powerful and the information obtained is more, it is easier to make a deletion decision than the RLC layer.

Optionally, if the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface, the RLC buffered by the RLC layer is stored. Layer SDU deletion, including:

If the SDU of the RLC layer is a TM SDU or a UM SDU, and at least one segment of the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, the RLC layer buffered by the RLC layer All segments of the SDU are deleted.

Wherein, the above-mentioned deletion of all segments of the SDU of the RLC layer buffered by the RLC layer may also be referred to as discarding the SDU at the RCL layer, or discarding the SDU by the communication device.

In this embodiment, if the indication information of the upper layer is received, one or more segments of the SDU at the RLC layer are sent to the lower layer or have been sent at the air interface, and all the segments buffered by the RLC layer can be deleted, so that Improve the efficiency of deleting SDUs, because it is not necessary to wait until all segments are sent to the bottom layer or have been sent on the air interface before deleting.

Certainly, in some embodiments, for the SDU that has not been segmented, step 402 may be to delete the RLC layer buffered SDU after the SDU is sent to the bottom layer or has been sent over the air interface. Alternatively, the SDU for the segment may only delete the segment that has been sent to the bottom layer or that has been sent in the air interface, which is not limited in this embodiment.

Optionally, if the SDU of the RLC layer is a TM SDU or a UM SDU, and at least one segment of the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, the RLC layer After the step of deleting all segments of the buffered SDU of the RLC layer, the method further includes:

A notification message for notifying that the SDU of the RLC layer is discarded is sent to the receiving end.

In this embodiment, if the SDU of the RLC layer is discarded, a notification message is sent to the receiving end to notify the receiving end that the SDU of the RLC layer has been discarded by the transmitting end, so that the receiving end can cancel the SDU for the RLC layer. Related operations are performed to prevent the receiving end from waiting for the SDU not received, thereby saving the power consumption of the receiving end and improving the data processing performance of the receiving end.

In this embodiment, through the above steps, it is possible to delete the SDU buffered by the RLC layer according to the instruction information sent by the upper layer to discard the SDU of the RLC layer, so as to save the buffer space of the RLC layer and improve the flexibility of deleting the SDU buffered by the RLC layer. sex. In addition, beneficial effects such as improving the efficiency of deleting SDUs, saving the power consumption of the receiving end, and improving the data processing performance of the receiving end can also be achieved.

Please refer to FIG. 5. FIG. 5 is a schematic structural diagram of a communication device according to an embodiment of the present invention. As shown in FIG. 5, the communication device 500 includes:

The judgment module 501 is used to judge whether the SDU of the RLC layer is the SDU of the TM or the SDU of the UM;

Deletion module 502, configured to delete the RLC buffered by the RLC layer if the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface Layer SDU deletion.

Optionally, the deletion module 502 is configured to, if the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and all the data of the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, then delete the SDU of the RLC layer. Delete all data of the SDU of the RLC layer cached by the RLC layer; or

The deletion module 502 is configured to delete the RLC layer if the SDU of the RLC layer is a TM SDU or a UM SDU, and at least one segment of the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface. The at least one segment of the layer cache is deleted.

Optionally, the deletion module 502 is configured to, in the case that the RLC layer receives the indication information sent by the upper layer indicating that the SDU of the RLC layer is discarded, if the SDU of the RLC layer is a TM SDU or a UM SDU, and the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface, the SDU of the RLC layer buffered by the RLC layer is deleted.

Optionally, the deletion module 502 is configured to, in the case that the RLC layer receives the indication information sent by the upper layer indicating that the SDU of the RLC layer is discarded, if the SDU of the RLC layer is a TM SDU or a UM SDU, And at least one segment of the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface, all segments of the SDU of the RLC layer buffered by the RLC layer are deleted.

Optionally, as shown in FIG. 6 , the communication device 500 further includes:

The sending module 503 is configured to send a notification message for notifying that the SDU of the RLC layer is discarded to the receiving end.

The communication device provided in the embodiment of the present invention can implement each process implemented by the mobile terminal in the method embodiments shown in FIG. 2 to FIG. 4 . To avoid repetition, details are not repeated here. The communication device can save the buffer space of the RLC layer.

7 is a schematic diagram of a hardware structure of a communication device implementing various embodiments of the present invention,

The communication device 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, a processor 710, and Power supply 711 and other components. Those skilled in the art can understand that the structure of the communication device shown in FIG. 7 does not constitute a limitation on the communication device, and the communication device may include more or less components than the one shown, or combine some components, or different components layout. In this embodiment of the present invention, the communication device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The processor 710 is configured to determine whether the SDU of the RLC layer of the radio link layer control protocol is the SDU of the transparent mode TM or the SDU of the unacknowledged mode UM;

If the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, the SDU of the RLC layer buffered by the RLC layer is deleted.

Optionally, if the SDU of the RLC layer is the SDU of TM or the SDU of UM, and the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface, the SDU of the RLC layer is executed by the processor 710. Deletion of the cached SDUs of the RLC layer, including:

If the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and all the data of the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, the SDU of the RLC layer buffered by the RLC layer All data deleted; or

If the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and at least one segment of the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, the at least one segment of the SDU buffered by the RLC layer is sent to the bottom layer. Segment deletion.

Optionally, if the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, the SDU of the RLC layer cached by the processor 710 is executed. The SDU deletion of the RLC layer includes:

In the case where the RLC layer receives the indication information sent by the upper layer indicating that the SDU of the RLC layer is discarded, if the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and the SDU of the RLC layer is sent to the lower layer or If it has been sent on the air interface, the SDU of the RLC layer buffered by the RLC layer is deleted.

Optionally, if the SDU of the RLC layer is the SDU of TM or the SDU of UM, and the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface, the SDU of the RLC layer is executed by the processor 710. Deletion of the cached SDUs of the RLC layer, including:

If the SDU of the RLC layer is a TM SDU or a UM SDU, and at least one segment of the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, the RLC layer buffered by the RLC layer All segments of the SDU are deleted.

Optionally, if the SDU of the RLC layer is a TM SDU or a UM SDU, and at least one segment of the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, the RLC layer After the step of deleting all segments of the buffered SDUs of the RLC layer, the radio frequency unit 701 is configured to: send a notification message to the receiving end for notifying that the SDUs of the RLC layer are discarded.

The communication device can save the buffer space of the RLC layer.

It should be understood that, in this embodiment of the present invention, the radio frequency unit 701 can be used for receiving and sending signals during sending and receiving of information or during a call. Specifically, after receiving the downlink data from the base station, it is processed by the processor 710; The uplink data is sent to the base station. Generally, the radio frequency unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 701 can also communicate with the network and other devices through a wireless communication system.

The communication device provides the user with wireless broadband Internet access through the network module 702, such as helping the user to send and receive emails, browse web pages, access streaming media, and the like.

The audio output unit 703 may convert audio data received by the radio frequency unit 701 or the network module 702 or stored in the memory 709 into audio signals and output as sound. Also, the audio output unit 703 may also provide audio output related to a specific function performed by the communication device 700 (eg, call signal reception sound, message reception sound, etc.). The audio output unit 703 includes a speaker, a buzzer, a receiver, and the like.

The input unit 704 is used to receive audio or video signals. The input unit 704 may include a graphics processor (Graphics Processing Unit, GPU) 7041 and a microphone 7042. The graphics processor 7041 captures still pictures or video images obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode data is processed. The processed image frames may be displayed on the display unit 706 . The image frames processed by the graphics processor 7041 may be stored in the memory 709 (or other storage medium) or transmitted via the radio frequency unit 701 or the network module 702 . The microphone 7042 can receive sound and can process such sound into audio data. The processed audio data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 701 for output in the case of a telephone call mode.

The communication device 700 also includes at least one sensor 705, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 7061 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 7061 and the display panel 7061 when the communication device 700 moves to the ear. / or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of communication equipment (such as horizontal and vertical screen switching, related games , magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; the sensor 705 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, Infrared sensors, etc., are not repeated here.

The display unit 706 is used to display information input by the user or information provided to the user. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

The user input unit 707 may be used to receive input numerical or character information, and generate key signal input related to user settings and function control of the communication device. Specifically, the user input unit 707 includes a touch panel 7071 and other input devices 7072 . The touch panel 7071, also referred to as a touch screen, can collect touch operations by the user on or near it (such as the user's finger, stylus, etc., any suitable object or attachment on or near the touch panel 7071). operate). The touch panel 7071 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it to the touch controller. To the processor 710, the command sent by the processor 710 is received and executed. In addition, the touch panel 7071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 7071 , the user input unit 707 may also include other input devices 7072 . Specifically, other input devices 7072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.

Further, the touch panel 7071 can be covered on the display panel 7061. When the touch panel 7071 detects a touch operation on or near it, it transmits it to the processor 710 to determine the type of the touch event, and then the processor 710 determines the type of the touch event according to the touch The type of event provides corresponding visual output on display panel 7061. Although in FIG. 7, the touch panel 7071 and the display panel 7061 are used as two independent components to realize the input and output functions of the communication device, in some embodiments, the touch panel 7071 and the display panel 7061 may be integrated The input and output functions of the communication device are implemented, which is not specifically limited here.

The interface unit 708 is an interface for connecting an external device to the communication device 700 . For example, external devices may include wired or wireless headset ports, external power (or battery charger) ports, wired or wireless data ports, memory card ports, ports for connecting devices with identification modules, audio input/output (I/O) ports, video I/O ports, headphone ports, and more. The interface unit 708 may be used to receive input (eg, data information, power, etc.) from external devices and transmit the received input to one or more elements within the communication device 700 or may be used between the communication device 700 and external Transfer data between devices.

The memory 709 may be used to store software programs as well as various data. The memory 709 may mainly include a stored program area and a stored data area, wherein the stored program area may store an operating system, an application program required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data created by the use of the mobile phone (such as audio data, phone book, etc.), etc. Additionally, memory 709 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 710 is the control center of the communication device, uses various interfaces and lines to connect various parts of the entire communication device, runs or executes the software programs and/or modules stored in the memory 709, and calls the data stored in the memory 709. , perform various functions of the communication equipment and process data, so as to monitor the communication equipment as a whole. The processor 710 may include one or more processing units; preferably, the processor 710 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, etc., and the modem The processor mainly handles wireless communication. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 710.

The communication device 700 may also include a power supply 711 (such as a battery) for supplying power to various components. Preferably, the power supply 711 may be logically connected to the processor 710 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system and other functions.

In addition, the communication device 700 includes some functional modules not shown, which will not be repeated here.

Preferably, an embodiment of the present invention further provides a communication device, including a processor 710, a memory 709, and a computer program stored in the memory 709 and executable on the processor 710, when the computer program is executed by the processor 710 The various processes of the above-mentioned SDU processing method embodiments are implemented, and the same technical effect can be achieved. In order to avoid repetition, details are not repeated here.

Embodiments of the present invention further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, each process of the foregoing SDU processing method embodiment can be achieved, and the same can be achieved. The technical effect, in order to avoid repetition, will not be repeated here. The computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk, or an optical disk.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on this understanding, the technical solutions of the present invention can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk, CD), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present invention.

The embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of the present invention, without departing from the spirit of the present invention and the scope protected by the claims, many forms can be made, which all belong to the protection of the present invention.

Claims (12)

1. a processing method of service data unit SDU, is characterized in that, comprises: Determine whether the SDU of the RLC layer of the radio link layer control protocol is the SDU of the transparent mode TM or the SDU of the unacknowledged mode UM; If the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface, delete the SDU of the RLC layer buffered by the RLC layer; If the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface, delete the SDU of the RLC layer buffered by the RLC layer ,include: If the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and at least one segment of the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, the at least one segment of the SDU buffered by the RLC layer is sent to the bottom layer. Segment deletion. 2. The method according to claim 1, wherein, if the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface, Then delete the SDU of the RLC layer cached by the RLC layer, and also include: If the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and all the data of the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, the SDU of the RLC layer buffered by the RLC layer All data is deleted. 3. The method according to claim 1, wherein, if the SDU of the RLC layer is the SDU of TM or the SDU of UM, and the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface, Then delete the SDU of the RLC layer cached by the RLC layer, including: In the case where the RLC layer receives the indication information sent by the upper layer indicating that the SDU of the RLC layer is discarded, if the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and the SDU of the RLC layer is sent to the lower layer or If it has been sent on the air interface, the SDU of the RLC layer buffered by the RLC layer is deleted. 4. The method according to claim 3, wherein, if the SDU of the RLC layer is the SDU of TM or the SDU of UM, and the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface, Then delete the SDU of the RLC layer cached by the RLC layer, including: If the SDU of the RLC layer is a TM SDU or a UM SDU, and at least one segment of the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, the RLC layer buffered by the RLC layer All segments of the SDU are deleted. 5. The method according to claim 4, wherein, if the SDU of the RLC layer is a TM SDU or a UM SDU, and at least one segment of the SDU of the RLC layer is sent to the bottom layer or has been After the air interface has been sent, the method further includes: A notification message for notifying that the SDU of the RLC layer is discarded is sent to the receiving end. 6. A communication device, comprising: The judgment module is used to judge whether the SDU of the RLC layer is the SDU of the TM or the SDU of the UM; A deletion module, configured to delete the RLC layer cached by the RLC layer if the SDU of the RLC layer is the SDU of the TM or the SDU of the UM, and the SDU of the RLC layer is sent to the bottom layer or has been sent on the air interface SDU deletion; The deletion module is configured to delete the RLC layer if the SDU of the RLC layer is a TM SDU or a UM SDU, and at least one segment of the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface. The at least one segment of the cache is deleted. 7. The communication device according to claim 6, wherein the deletion module is further configured to send all data of the SDU of the RLC layer if the SDU of the RLC layer is the SDU of TM or the SDU of UM, and the SDU of the RLC layer When it reaches the bottom layer or has been sent on the air interface, all data of the SDU of the RLC layer buffered by the RLC layer is deleted. 8. The communication device according to claim 6, wherein the deletion module is configured to, when the RLC layer receives the indication information sent by a higher layer indicating that the SDU of the RLC layer is discarded, if the RLC layer If the SDU is a TM SDU or a UM SDU, and the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, the SDU of the RLC layer buffered by the RLC layer is deleted. 9. The communication device according to claim 8, wherein the deletion module is configured to, when the RLC layer receives the indication information sent by the upper layer indicating that the SDU of the RLC layer is discarded, if the RLC layer If the SDU is a TM SDU or a UM SDU, and at least one segment of the SDU of the RLC layer is sent to the bottom layer or has been sent over the air interface, the entire part of the SDU of the RLC layer buffered by the RLC layer segment deleted. 10. The communication device of claim 9, wherein the communication device further comprises: A sending module, configured to send a notification message for notifying the SDU of the RLC layer to be discarded to the receiving end. 11. A communication device, comprising: a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program being executed by the processor to achieve Steps in the SDU processing method according to any one of claims 1 to 5. 12. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program according to any one of claims 1 to 5 is implemented. The steps of the processing method of SDU.

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