WO2019149210A1

WO2019149210A1 - Data compression method and decompression method, and sending end and receiving end

Info

Publication number: WO2019149210A1
Application number: PCT/CN2019/073849
Authority: WO
Inventors: 全海洋; 梁靖
Original assignee: 电信科学技术研究院有限公司
Priority date: 2018-02-02
Filing date: 2019-01-30
Publication date: 2019-08-08
Also published as: CN110139317A; CN110139317B

Abstract

Provided are a data compression method and decompression method, and a sending end and a receiving end. The data compression method comprises: acquiring NAS information; compressing the NAS information via an RRC layer to obtain compressed data; determining corresponding compression-related information in an RRC message; generating a target RRC message according to the compressed data and the compression-related information; and sending the target RRC message to a receiving end.

Description

Data compression method, decompression method, transmitting end and receiving end

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 20110110799, filed on Jan. 2, s.

Technical field

The present disclosure relates to the field of communications technologies, and in particular, to a data compression method, a decompression method, a transmitting end, and a receiving end.

Background technique

In the LTE (Long Term Evolution)/LTE-Advanced system, the network (User Equipment) can use the UDC (Uplink Data Compression) function to enable the UE to compress the uplink data. Re-transmission, thereby reducing the air interface resource overhead.

For the UDC function, the sender maintains the compression cache, the receiver maintains the decompression cache, and the compression cache and the decompression cache are first-in, first-out queues. The sender compresses the data to be sent before sending the data. The specific compression process may be: first, in the data to be sent, searching for a target field that meets the following characteristics: the length exceeds a preset threshold; the target field is the same as a field in the compressed cache or is located in the target field with the data to be sent. The previous field is the same; then if the target field is found, the target field is replaced by a combination of the offset and the length, which is the position offset between the target field and the previous same field of the target field. This length is the length of the target field. When multiple fields in a packet meet the above characteristics, these fields can be compressed. Since the length of the offset and length combination is shorter than the length of the target field itself, it can be compressed.

After obtaining the compressed data packet, the transmitting end sends the compressed data packet to the receiving end, and simultaneously fills the corresponding original data packet (uncompressed data) into the compressed cache. After receiving the compressed data packet, the receiving end may decompress the compressed data packet according to the offset and length in the compressed data packet, and the decompressed buffer, and fill the compressed data into the decompression buffer. In the UDC process, the transmitting end may specifically be a UE, and the receiving end may specifically be a base station.

Currently, the UDC function supported by the LTE/LTE-Advanced system can only be used for data transmission on the user plane. The DRB (Date Radio Bearers) is implemented on the PDCP (Packet Data Convergence Protocol) layer. Carrying) uplink data carried. In the NB-IoT (Narrow Band Internet of Things) system, the data transmission of the DRB without the user plane can be supported, that is, the control plane SRB (Signaling Radio Bearers) is utilized. Transfer. Generally, the UE in the NB-IoT system is in a harsh environment, which requires not only power saving, low power consumption, but also extended coverage. Therefore, if the control plane data in such a system is compressed and then transmitted, it may be advantageous. Reduce the terminal transmission volume, reduce terminal power consumption, and save air interface resources. However, it is not clear how to compress the control plane data, so it is necessary to provide a compression method for the control plane data.

Summary of the invention

The present disclosure provides a data compression method, a decompression method, a transmitting end, and a receiving end, so as to implement a compression process and a decompression process of control plane data, improve data transmission efficiency, and save air interface resources.

In a first aspect, the present disclosure provides a data compression method, including:

Obtain non-access stratum NAS information;

Compressing the NAS information by using a radio resource control RRC layer to obtain compressed data;

Determining corresponding compression related information in the RRC message;

Generating a target RRC message according to the compressed data and the compression related information;

Sending the target RRC message to the receiving end.

In a second aspect, the present disclosure also provides a data decompression method, including:

Receiving a target RRC message sent by the sending end, where the target RRC message includes NAS information and corresponding compression related information;

Determining whether the NAS information is compressed;

When the NAS information is compressed, the NAS information is decompressed according to the compression related information.

In a third aspect, the present disclosure provides a transmitting end, including a transceiver, a memory, a processor, and a computer program stored on the memory and operable on the processor;

The processor is configured to: acquire NAS information, compress the NAS information by using an RRC layer, obtain compressed data, determine compression related information in the RRC message, and generate a target RRC according to the compressed data and the compression related information. Message

The transceiver is configured to: send the target RRC message to a receiving end.

In a fourth aspect, the present disclosure provides a receiving end, including a transceiver, a memory, a processor, and a computer program stored on the memory and operable on the processor;

The transceiver is configured to: receive a target RRC message sent by a sending end, where the target RRC message includes NAS information and corresponding compression related information;

The processor is configured to: determine whether the NAS information is compressed, and when the NAS information is compressed, decompress the NAS information according to the compression related information.

In a fifth aspect, the present disclosure further provides a data compression apparatus, including:

Obtaining a module for acquiring NAS information;

a compression module, configured to compress the NAS information through an RRC layer to obtain compressed data;

a first determining module, configured to determine corresponding compression related information in the RRC message;

a generating module, configured to generate a target RRC message according to the compressed data and the compression related information;

And a sending module, configured to send the target RRC message to the receiving end.

In a sixth aspect, the present disclosure further provides a data decompressing apparatus, including:

a receiving module, configured to receive a target RRC message sent by the sending end, where the target RRC message includes NAS information and corresponding compression related information;

a second determining module, configured to determine whether the NAS information is compressed;

And a decompression module, configured to decompress the NAS information according to the compression related information when the NAS information is compressed.

In a seventh aspect, the present disclosure also provides a communication device including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the computer program is The steps of implementing the above data compression method are implemented.

In an eighth aspect, the present disclosure also provides a communication device including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the computer program is The steps of implementing the above data decompression method are implemented.

In a ninth aspect, the present disclosure also provides a computer readable storage medium having stored thereon a computer program, wherein the computer program is executed by a processor to implement the steps of the data compression method.

In a tenth aspect, the present disclosure also provides a computer readable storage medium having stored thereon a computer program, wherein the computer program is executed by a processor to implement the steps of the data decompression method.

In the present disclosure, the acquired NAS information is compressed by the RRC layer, the compressed data is obtained, the corresponding compression related information in the RRC message is determined, the target RRC message is generated according to the compressed data and the compressed related information, and the target RRC message is sent to the receiving end. It can realize the compression process of the control plane data, improve the data transmission efficiency and save the air interface resources. In particular, the weak coverage of the NB-IoT system (multiple repeated transmissions to ensure demodulation and reception) and the NR (New Radio) system are better in terms of energy saving, resource saving, and transmission efficiency. .

DRAWINGS

In order to more clearly illustrate the technical solutions of some embodiments of the present disclosure, the drawings to be used in some embodiments of the present disclosure will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present disclosure. Other drawings may also be obtained from those of ordinary skill in the art based on these drawings without the inventive labor.

1 is a flow chart of a data compression method according to some embodiments of the present disclosure;

2 is a flowchart of a data decompression method according to some embodiments of the present disclosure;

3 is a schematic structural diagram of a transmitting end according to some embodiments of the present disclosure;

4 is a schematic structural diagram of a receiving end according to some embodiments of the present disclosure;

FIG. 5 is a schematic structural diagram of a data compression apparatus according to some embodiments of the present disclosure;

FIG. 6 is a schematic structural diagram of a data decompressing apparatus according to some embodiments of the present disclosure;

FIG. 7 is a schematic structural diagram of a communication device according to some embodiments of the present disclosure.

Detailed ways

The technical solutions in some embodiments of the present disclosure are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present disclosure. It is obvious that the described embodiments are a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without departing from the inventive scope are the scope of the disclosure.

As shown in FIG. 1 , some embodiments of the present disclosure provide a data compression method, which is applied to a transmitting end, and includes the following steps:

Step 101: Acquire NAS information.

The NAS (Non-Access Stratum) information is signaling and/or data of the NAS, and the data may be application layer data. The signaling and/or data generated by the NAS can be sent to the RRC (Radio Resource Control) layer through NAS signaling.

Step 102: compress the NAS information through the RRC layer to obtain compressed data.

Among them, when compressing the NAS information, the deflate lossless data compression method can be used, wherein the dictionary can use the dictionary defined by RFC3485 or the dictionary defined by the operator. If the sender does not preset the dictionary, the NULL dictionary can be used. That is, all the bytes whose bit is 0), if the sender presets multiple dictionaries, the dictionary can be selected to be compressed according to the configuration message of the network.

Step 103: Determine corresponding compression related information in the RRC message.

The determining the compression related information in the RRC message may be determined according to a specific compression process and a specific form of the corresponding RRC message. The compression related information may include one or more of the following indication information:

Indicates whether the NAS information in the RRC message is indication information of the compressed data;

An indication indicating whether the decompressed data is filled in the buffer;

Indicates whether to reset the buffer indication information before decompression;

An indication indicating the dictionary or dictionary version used by the compression process;

An indication indicating the status of the data in the buffer before compression.

In specific implementation, the foregoing indication information may be represented by bit 0 or 1. For example, if the NAS information in the target RRC message is not compressed data, the corresponding indication bit may be set to 0; if the NAS information in the target RRC message is compressed data, the corresponding indication bit may be set to 1.

Step 104: Generate a target RRC message according to the compressed data and the compression related information.

The compressed data can be filled in a preset NAS container of the target RRC message. In a specific implementation, the preset NAS container is used to carry the signaling and/or application layer data of the NAS, and may be a related container for carrying NAS signaling, or a newly defined container dedicated to carrying compressed data.

Step 105: Send a target RRC message to the receiving end.

After receiving the target RRC message, the receiving end may first determine whether the NAS information is compressed according to the content in the target RRC message; and then, when the NAS information is compressed, decompress the compressed data according to the compression related information. .

It should be noted that the sending end in some embodiments of the present disclosure may be a terminal device (such as a mobile phone, an iPad, etc.) or a network device (such as a base station, etc.), and correspondingly, the receiving end may be a network device or a terminal device. When the transmitting end is the terminal device and the receiving end is the base station, after obtaining the decompressed NAS information or the uncompressed NAS information, the base station may deliver the decompressed NAS information or the uncompressed NAS information to the NAS layer, further The decompressed NAS information or the uncompressed NAS information is forwarded to the core network node, for example, to the MME entity through the S1 interface between the base station and the MME (Mobility Management Entity) entity. In order to ensure the accuracy of the transmitted data, after obtaining the decompressed NAS information, the base station may first check the integrity of the decompressed NAS information, and then submit it to the NAS layer after the check is passed. If the integrity check fails, the error information may be fed back to the terminal device to cause the terminal device to resend the related information.

The data compression method of some embodiments of the present disclosure compresses the acquired NAS information by the RRC layer, obtains compressed data, determines corresponding compression related information in the RRC message, generates a target RRC message according to the compressed data and the compression related information, and receives the information. The terminal sends the target RRC message, which can implement the compression process of the control plane data, improve data transmission efficiency, and save air interface resources. In particular, the weak coverage of the NB-IoT system (multiple repeated transmissions to ensure demodulation and reception) and the NR system are more effective in terms of energy saving, resource saving, and transmission efficiency.

In some embodiments of the present disclosure, the manner in which the target RRC message is generated may be at least two according to different filling positions of the compression related information, as described in detail below.

method one

In the first method, the sender directly fills the compression related information into the target RRC message. According to the compressed data and the compression related information, the process of generating the target RRC message may be:

First, the sending end fills the compressed data into the preset NAS container of the first RRC message to obtain a second RRC message.

Then, the sender fills the compression related information into the second RRC message to obtain a target RRC message.

It should be noted that the first RRC message or the second RRC message is an RRC message to be processed that is existing before the target RRC message is generated, and the first RRC message is filled in by the processing of the first RRC message. In the NAS container, the second RRC message is obtained, and the target RRC message is obtained by filling the second RRC message with the compression related information by processing the second RRC message.

Way two

In the second mode, the sending end fills the compression related information into the preset compressed data packet header of the compressed data. According to the compressed data and the compression related information, the process of generating the target RRC message may be:

First, the sending end fills the compression related information into the preset compressed data packet header of the compressed data to obtain a compressed data packet; the preset compressed data packet header may be, for example, a first 8 or 16 bit header of the preset compressed data packet;

Then, the sending end fills the compressed data packet into the preset NAS container of the third RRC message, and fills in the third RRC message with the indication information for indicating that the preset NAS container carries the compressed data packet, to obtain the target RRC message.

It should be noted that the third RRC message is an RRC message to be processed that is existing before the target RRC message is generated, and the compressed data packet is filled into the preset NAS container of the third RRC message by processing the third RRC message. And instructing the preset NAS container to carry the compressed data packet to fill the third RRC message, to obtain the target RRC message.

The following takes the RRC message as an example to describe the data compression process of some embodiments of the present disclosure. It should be noted that the data compression method of some embodiments of the present disclosure is not limited to the uplink RRC message, and is also applicable to the downlink RRC message.

In some embodiments of the present disclosure, the uplink RRC message is exemplified by the RRC connection recovery complete message, but not limited thereto, as long as the uplink RRC message carries the NAS container, the corresponding uplink data compression can be supported. Specifically, the structure of the RRC connection recovery complete message may be as follows, where the dedicatedInfoNAS-r13 is a container carrying NAS information to be compressed.

Example one

In the first example, the compression process for the RRC connection recovery complete message is: filling the compressed data into the dedicatedInfoNAS-r13, filling the compression related information into the RRC message, and correspondingly obtaining the target RRC connection recovery complete message (partial field) It can be as follows (this is only a schematic example and does not fully comply with the rules of ASN.1):

In the target RRC connection recovery complete message, the dedicatedInfoNAS-r13 is filled with compressed data, and compressedInd, compressedDict, resetBuffer, enterBufferFlag, and checksum are compression related information. The compressedInd is used to indicate whether the dedicatedInfoNAS-r13 is compressed data or uncompressed data. Since the dedicatedInfoNAS-r13 is an original container, the compressedInd must be added, and other compression related information parameters may be optionally increased. The compressedDict is used to indicate the dictionary or dictionary version used by the compression process. The resetBuffer is used to indicate whether to reset the buffer before decompressing, that is, to clear the data in the buffer. The enterBufferFlag is used to indicate whether the decompressed data is filled in the buffer, for example, can be filled in by FIFO. The checksum is used to indicate the state of the data in the buffer before the compression, for example, several check bits that can be calculated by some rule for verifying whether the data of the buffer is consistent.

Example two

In the second embodiment, the compression processing process for the RRC connection recovery complete message is: filling the compressed data into a newly added container carrying the compressed data, filling the compression related information into the RRC message, and recovering the corresponding target RRC connection. The full message (some fields) can be as follows:

In the target RRC connection recovery complete message, the compressedDedicatedInfoNAS is a newly added container that carries compressed data, and is used to carry compressed data. In this case, the dedicatedInfoNAS-r13 may not appear. The compressedDict, resetBuffer, enterBufferFlag, and checksum are compression related information. The compressedDict is used to indicate the dictionary or dictionary version used by the compression process. The resetBuffer is used to indicate whether to reset the buffer before decompressing, that is, to clear the data in the buffer. The enterBufferFlag is used to indicate whether the decompressed data is filled in the buffer, for example, can be filled in by FIFO. The checksum is used to indicate the state of the data in the buffer before the compression, for example, a check digit calculated by a certain rule for verifying whether the data of the buffer is consistent. Since the target RRC connection recovery complete message includes a container that exclusively carries compressed data, a separate bit may not be used to indicate whether to compress.

Example three

In the third example, the compression processing process for recovering the complete message of the RRC connection is: filling the compression related information into the preset compressed data packet header of the compressed data, and filling the obtained compressed data packet into the dedicatedInfoNAS-r13, correspondingly obtained. The target RRC connection recovery complete message (partial field) can be as follows:

In the target RRC connection recovery complete message, the compressedInd is used to indicate that the dedicatedInfoNAS-r13 carries the compressed data packet, and the format of the compressed data packet can be as shown in Table 1 below:

Table 1

The indication information 1 is used to indicate a dictionary or dictionary version used by the compression process, and the indication information 2 is used to indicate whether to reset the buffer before decompression, and the indication information 3 is used to indicate whether the decompressed data is filled in the buffer. In the area, the indication information 4 is used to indicate the status of the data in the buffer before compression. It should be noted that the indication information 1 to the indication information 4 are optionally added, and the total length of the header information before compressing the data may be 8 bits or 16 bits. The dedicatedInfoNAS-r13 is optional OCTET STRING type, and the compressed data packet part is in the form of 8-bit group. The data is insufficient and is padded with 0.

Correspondingly, after receiving the target RRC connection recovery complete message, the receiving end, for example, the base station may first determine, according to the compressedInd, that the dedicatedInfoNAS-r13 carries the compressed data packet, and then according to the packet header information in the compressed data packet, The compressed data is then decompressed.

Example four

In the fourth example, the compression processing process for recovering the complete message for the RRC connection is: filling the compression related information into the preset compressed data packet header of the compressed data, and filling the obtained compressed data packet into the newly added special carrying compressed data. In the container, the corresponding target RRC connection recovery complete message (partial field) can be obtained as follows:

In the target RRC connection recovery complete message, the compressedDedicatedInfoNAS is a newly added container that carries compressed data, and is used to carry compressed data packets. In this case, the dedicatedInfoNAS-r13 may not appear. The format of the compressed data packet carried in the compressedDedicatedInfoNAS can be as described in the third embodiment, and details are not described herein again.

As shown in FIG. 2, some embodiments of the present disclosure further provide a data decompression method, which is applied to a receiving end, and includes the following steps:

Step 201: Receive a target RRC message sent by the sending end, where the target RRC message includes NAS information and corresponding compression related information.

Step 202: Determine whether the NAS information is compressed.

Step 203: When the NAS information is compressed, the NAS information is decompressed according to the compression related information.

The data decompression method of some embodiments of the present disclosure, by receiving a target RRC message sent by the sending end, the target RRC message includes NAS information and corresponding compression related information, determining whether the NAS information is compressed, when the NAS information is compressed, according to The related information is compressed, and the NAS information is decompressed, which can realize the decompression process of the control plane data, improve the data transmission efficiency, and save the air interface resources.

In some embodiments of the present disclosure, optionally, the NAS information is filled in a preset NAS container of the target RRC message.

Optionally, the compression related information is filled in the target RRC message, or the compression related information is filled in a preset compressed data packet header of the compressed data.

Optionally, the NAS information is signaling and/or data of the NAS.

Optionally, the compression related information includes one or more of the following indication information:

An indication indicating whether the decompressed data is filled in the buffer;

The above embodiment describes the data compression method and the data decompression method of the present disclosure. The transmitting end and the receiving end of the present disclosure will be described below with reference to the embodiments and the accompanying drawings.

Referring to FIG. 3, some embodiments of the present disclosure further provide a transmitting end, including a transceiver 31, a memory 32, a processor 33, and a computer program stored on the memory 32 and operable on the processor 33;

The processor 33 is configured to: acquire NAS information, compress the NAS information by using an RRC layer, obtain compressed data, determine compression related information in the RRC message, and generate, according to the compressed data and the compression related information, Target RRC message;

The transceiver 31 is configured to: send the target RRC message to a receiving end.

The transmitting end of some embodiments of the present disclosure compresses the acquired NAS information through the RRC layer, obtains compressed data, determines corresponding compression related information in the RRC message, and generates a target RRC message according to the compressed data and the compression related information, to the receiving end. Sending the target RRC message can implement the compression process of the control plane data, improve the data transmission efficiency, and save the air interface resources.

Optionally, the processor 33 is configured to: fill the compressed data into a preset NAS container of the first RRC message, obtain a second RRC message, and fill the compression related information into the second RRC. In the message, the target RRC message is obtained.

Optionally, the processor 33 is specifically configured to: fill the compression related information into a preset compressed data packet header of the compressed data, obtain a compressed data packet, and fill the compressed data packet into a third RRC message. In the preset NAS container, the indication information for indicating that the preset NAS container carries the compressed data packet is filled in the third RRC message to obtain the target RRC message.

Optionally, the NAS information is signaling and/or data of the NAS.

An indication indicating whether the decompressed data is filled in the buffer;

In FIG. 3, a bus architecture (represented by bus 30), bus 30 may include any number of interconnected buses and bridges, and bus 30 will include one or more processors represented by processor 33 and memory represented by memory 32. The various circuits are connected together. The transceiver 31 can include a transmitter and a receiver, the transmitter and receiver can be a transceiver interface, and the transmitter and receiver can be coupled to the processor 31 and the memory 33 via a bus 30.

The processor 33 is responsible for managing the bus 30 and the usual processing, and the memory 32 can be used to store data used by the processor 33 when performing operations.

Referring to FIG. 4, some embodiments of the present disclosure further provide a receiving end, including a transceiver 41, a memory 42, a processor 43, and a computer program stored on the memory 42 and operable on the processor 43;

The transceiver 41 is configured to: receive a target RRC message sent by the sending end, where the target RRC message includes NAS information and corresponding compression related information;

The processor 43 is configured to: determine whether the NAS information is compressed, and when the NAS information is compressed, decompress the NAS information according to the compression related information.

The receiving end of some embodiments of the present disclosure receives the target RRC message sent by the sending end, the target RRC message includes the NAS information and the corresponding compression related information, determines whether the NAS information is compressed, and when the NAS information is compressed, according to the compression correlation Information, decompressing NAS information, can realize the decompression process of control plane data, improve data transmission efficiency and save air interface resources.

Optionally, the NAS information is filled in a preset NAS container of the target RRC message.

Optionally, the NAS information is signaling and/or data of the NAS.

An indication indicating whether the decompressed data is filled in the buffer;

In FIG. 4, a bus architecture (represented by bus 40), bus 40 may include any number of interconnected buses and bridges, and bus 40 will include one or more processors represented by processor 43 and memory represented by memory 42. The various circuits are connected together. The transceiver 41 can include a transmitter and a receiver, the transmitter and receiver can be a transceiver interface, and the transmitter and receiver can be coupled to the processor 41 and memory 44 via a bus 40.

The processor 43 is responsible for managing the bus 40 and the usual processing, and the memory 42 can be used to store data used by the processor 43 when performing operations.

As shown in FIG. 5, some embodiments of the present disclosure further provide a data compression apparatus, including:

An obtaining module 51, configured to acquire NAS information;

The compression module 52 is configured to compress the NAS information by using an RRC layer to obtain compressed data.

The first determining module 53 is configured to determine corresponding compression related information in the RRC message.

The generating module 54 is configured to generate a target RRC message according to the compressed data and the compression related information;

The sending module 55 is configured to send the target RRC message to the receiving end.

The data compression apparatus of some embodiments of the present disclosure compresses the acquired NAS information by the RRC layer, obtains compressed data, determines corresponding compression related information in the RRC message, generates a target RRC message according to the compressed data and the compression related information, and receives the received information. The terminal sends the target RRC message, which can implement the compression process of the control plane data, improve data transmission efficiency, and save air interface resources.

Optionally, the generating module 54 is specifically configured to:

Filling the compressed data into a preset NAS container of the first RRC message, obtaining a second RRC message, and filling the compression related information into the second RRC message to obtain the target RRC message.

Optionally, the generating module 54 is specifically configured to:

Filling the compression related information into a preset compressed data packet header of the compressed data to obtain a compressed data packet, and filling the compressed data packet into a preset NAS container of the third RRC message, and The indication information that the preset NAS container carries the compressed data packet is filled in the third RRC message to obtain the target RRC message.

Optionally, the NAS information is signaling and/or data of the NAS.

An indication indicating whether the decompressed data is filled in the buffer;

Referring to FIG. 6, some embodiments of the present disclosure further provide a data decompressing apparatus, including:

The receiving module 61 is configured to receive a target RRC message sent by the sending end, where the target RRC message includes NAS information and corresponding compression related information.

a second determining module 62, configured to determine whether the NAS information is compressed;

The decompression module 63 is configured to decompress the NAS information according to the compression related information when the NAS information is compressed.

The data decompression apparatus of some embodiments of the present disclosure receives a target RRC message sent by a sender, where the target RRC message includes NAS information and corresponding compression related information, and determines whether the NAS information is compressed. When the NAS information is compressed, according to The related information is compressed, and the NAS information is decompressed, which can realize the decompression process of the control plane data, improve the data transmission efficiency, and save the air interface resources.

Optionally, the NAS information is signaling and/or data of the NAS.

An indication indicating whether the decompressed data is filled in the buffer;

Moreover, some embodiments of the present disclosure also provide a transmitting end including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the computer program is processed The processes of the foregoing data compression method embodiments can be implemented, and the same technical effects can be achieved. To avoid repetition, details are not described herein again.

Some embodiments of the present disclosure also provide a receiving end comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the computer program is executed by the processor The various processes of the foregoing data decompression method embodiments can be implemented, and the same technical effects can be achieved. To avoid repetition, details are not described herein again.

Specifically, referring to FIG. 7, some embodiments of the present disclosure further provide a communication device including a bus 71, a transceiver 72, an antenna 73, a bus interface 74, a processor 75, and a memory 76. In some embodiments of the present disclosure, the communication device further includes a computer program stored on the memory 76 and executable on the processor 75. The communication device can be a terminal device or a network device.

Wherein, when the communication device is the transmitting end, the computer program is executed by the processor 75 to implement the following steps:

Acquiring the NAS information, compressing the NAS information through the RRC layer, obtaining compressed data, determining compression related information in the RRC message, generating a target RRC message according to the compressed data and the compression related information, and controlling the transceiver 72 to The receiving end sends the target RRC message.

When the communication device is the receiving end, the computer program can be executed by the processor 75 to implement the following steps:

The control transceiver 72 receives the target RRC message sent by the sender, where the target RRC message includes the NAS information and the corresponding compression related information, determines whether the NAS information is compressed, and when the NAS information is compressed, according to the compression correlation Information, decompressing the NAS information.

The transceiver 72 is configured to receive and transmit data under the control of the processor 75.

In Figure 7, a bus architecture (represented by bus 71), which may include any number of interconnected buses and bridges, will include one or more processors represented by processor 75 and memory represented by memory 76. The various circuits are linked together. The bus 71 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art, and therefore, will not be further described herein. Bus interface 74 provides an interface between bus 71 and transceiver 72. Transceiver 72 can be an element or a plurality of elements, such as multiple receivers and transmitters, providing means for communicating with various other devices on a transmission medium. Data processed by processor 75 is transmitted over wireless medium via antenna 73. Further, antenna 73 also receives the data and transmits the data to processor 75.

The processor 75 is responsible for managing the bus 71 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The memory 76 can be used to store data used by the processor 75 when performing operations.

Alternatively, the processor 75 can be a CPU, an ASIC, an FPGA, or a CPLD.

Some embodiments of the present disclosure also provide a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements various processes of the data compression method embodiments described above, and achieves the same technology The effect, to avoid repetition, will not be repeated here.

Some embodiments of the present disclosure also provide a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements various processes of the data decompression method embodiments described above, and can achieve the same Technical effects, to avoid repetition, will not be repeated here.

Computer readable media includes both permanent and non-persistent, removable and non-removable media, and information storage can be implemented by any method or technology. The information can be computer readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory. (ROM), electrically erasable programmable read only memory (EEPROM), flash memory or other memory technology, compact disk read only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, Magnetic tape cartridges, magnetic tape storage or other magnetic storage devices or any other non-transportable media can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary storage of computer readable media, such as modulated data signals and carrier waves.

It is to be understood that the term "comprises", "comprising", or any other variants thereof, is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes those elements. It also includes other elements that are not explicitly listed, or elements that are inherent to such a process, method, article, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The serial numbers of some embodiments of the present disclosure described above are for illustration only and do not represent the advantages and disadvantages of the embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better. Implementation. Based on such understanding, the technical solution of the present disclosure, which is essential or contributes to the related art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM). The instructions include a number of instructions for causing a terminal device (which may be a cell phone, computer, server, air conditioner, or network device, etc.) to perform the methods described in various embodiments of the present disclosure.

The above is only the specific embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the disclosure. It should be covered within the scope of protection of the present disclosure. Therefore, the scope of protection of the disclosure should be determined by the scope of the claims.

Claims

A data compression method comprising:

Obtain non-access stratum NAS information;

Compressing the NAS information by using a radio resource control RRC layer to obtain compressed data;

Determining corresponding compression related information in the RRC message;

Generating a target RRC message according to the compressed data and the compression related information;

Sending the target RRC message to the receiving end.
The data compression method according to claim 1, wherein the generating a target RRC message according to the compressed data and the compression related information comprises:

Filling the compressed data into a preset NAS container of the first RRC message to obtain a second RRC message;

Filling the compression related information into the second RRC message to obtain the target RRC message.
The data compression method according to claim 1, wherein the generating an RRC message according to the compressed data and the compression related information comprises:

Filling the compression related information into a preset compressed data packet header of the compressed data to obtain a compressed data packet;

Filling the compressed data packet into a preset NAS container of the third RRC message, and filling the third RRC message with the indication information for indicating that the preset NAS container carries the compressed data packet, to obtain the Target RRC message.
The data compression method according to any one of claims 1 to 3, wherein the NAS information is signaling and/or data of the NAS.
The data compression method according to any one of claims 1 to 3, wherein the compression related information comprises one or more of the following indication information:

Indicates whether the NAS information in the RRC message is indication information of the compressed data;

An indication indicating whether the decompressed data is filled in the buffer;

Indicates whether to reset the buffer indication information before decompression;

An indication indicating the dictionary or dictionary version used by the compression process;

An indication indicating the status of the data in the buffer before compression.
A data decompression method comprising:

Receiving a target RRC message sent by the sending end, where the target RRC message includes NAS information and corresponding compression related information;

Determining whether the NAS information is compressed;

When the NAS information is compressed, the NAS information is decompressed according to the compression related information.
The data decompression method according to claim 6, wherein said NAS information is filled in a preset NAS container of said target RRC message.
The data decompression method according to claim 6, wherein the compression related information is filled in the target RRC message, or the compression related information is filled in a preset compressed data packet header of the compressed data.
The data decompression method according to any one of claims 6 to 8, wherein the NAS information is signaling and/or data of the NAS.
The data decompression method according to any one of claims 6 to 8, wherein the compression related information comprises one or more of the following indication information:

Indicates whether the NAS information in the RRC message is indication information of the compressed data;

An indication indicating whether the decompressed data is filled in the buffer;

Indicates whether to reset the buffer indication information before decompression;

An indication indicating the dictionary or dictionary version used by the compression process;

An indication indicating the status of the data in the buffer before compression.
A transmitting end, comprising a transceiver, a memory, a processor, and a computer program stored on the memory and operable on the processor; wherein

The processor is configured to: acquire NAS information, compress the NAS information by using an RRC layer, obtain compressed data, determine compression related information in the RRC message, and generate a target RRC according to the compressed data and the compression related information. Message

The transceiver is configured to: send the target RRC message to a receiving end.
The transmitting end according to claim 11, wherein

The processor is specifically configured to: fill the compressed data into a preset NAS container of the first RRC message, obtain a second RRC message, and fill the compression related information into the second RRC message to obtain the The target RRC message.
The transmitting end according to claim 11, wherein

The processor is specifically configured to: fill the compression related information into a preset compressed data packet header of the compressed data, obtain a compressed data packet, and fill the compressed data packet into a preset NAS container of a third RRC message. And indicating, by using the indication information, that the preset NAS container carries the compressed data packet, the third RRC message, to obtain the target RRC message.
The transmitting end according to any one of claims 11 to 13, wherein the NAS information is signaling and/or data of the NAS.
The transmitting end according to any one of claims 11 to 13, wherein the compression related information comprises one or more of the following indication information:

Indicates whether the NAS information in the RRC message is indication information of the compressed data;

An indication indicating whether the decompressed data is filled in the buffer;

Indicates whether to reset the buffer indication information before decompression;

An indication indicating the dictionary or dictionary version used by the compression process;

An indication indicating the status of the data in the buffer before compression.
A receiving end comprising a transceiver, a memory, a processor, and a computer program stored on the memory and operable on the processor;

The transceiver is configured to: receive a target RRC message sent by a sending end, where the target RRC message includes NAS information and corresponding compression related information;

The processor is configured to: determine whether the NAS information is compressed, and when the NAS information is compressed, decompress the NAS information according to the compression related information.
The receiving end according to claim 16, wherein said NAS information is filled in a preset NAS container of said target RRC message.
The receiving end according to claim 16, wherein said compression related information is filled in said target RRC message, or said compression related information is filled in a preset compressed data packet header of compressed data.
The receiving end according to any one of claims 16 to 18, wherein the NAS information is signaling and/or data of the NAS.
The receiving end according to any one of claims 16 to 18, wherein the compression related information comprises one or more of the following indication information:

Indicates whether the NAS information in the RRC message is indication information of the compressed data;

An indication indicating whether the decompressed data is filled in the buffer;

Indicates whether to reset the buffer indication information before decompression;

An indication indicating the dictionary or dictionary version used by the compression process;

An indication indicating the status of the data in the buffer before compression.
A data compression device comprising:

Obtaining a module for acquiring NAS information;

a compression module, configured to compress the NAS information through an RRC layer to obtain compressed data;

a first determining module, configured to determine corresponding compression related information in the RRC message;

a generating module, configured to generate a target RRC message according to the compressed data and the compression related information;

And a sending module, configured to send the target RRC message to the receiving end.
The data compression device according to claim 21, wherein the generating module is specifically configured to:

Filling the compressed data into a preset NAS container of the first RRC message, obtaining a second RRC message, and filling the compression related information into the second RRC message to obtain the target RRC message.
The data compression device according to claim 21, wherein the generating module is specifically configured to:

Filling the compression related information into a preset compressed data packet header of the compressed data to obtain a compressed data packet, and filling the compressed data packet into a preset NAS container of the third RRC message, and The indication information that the preset NAS container carries the compressed data packet is filled in the third RRC message to obtain the target RRC message.
A data decompression device includes:

a receiving module, configured to receive a target RRC message sent by the sending end, where the target RRC message includes NAS information and corresponding compression related information;

a second determining module, configured to determine whether the NAS information is compressed;

And a decompression module, configured to decompress the NAS information according to the compression related information when the NAS information is compressed.
A communication device comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein the computer program is executed by the processor to implement claims 1 to 5 The step of the data compression method according to any one of the preceding claims, or the step of the data decompression method according to any one of claims 6 to 10.
A computer readable storage medium having stored thereon a computer program, wherein the computer program is executed by a processor to implement the steps of the data compression method according to any one of claims 1 to 5.
A computer readable storage medium having stored thereon a computer program, wherein the computer program is executed by a processor to implement the steps of the data decompression method according to any one of claims 6 to 10.