WO2013113238A1

WO2013113238A1 - Method for enhancing voip data uplink coverage, terminal and base station

Info

Publication number: WO2013113238A1
Application number: PCT/CN2012/087217
Authority: WO
Inventors: 曾清海; 刘海; 李元杰; 余承宇
Original assignee: 华为技术有限公司
Priority date: 2012-02-01
Filing date: 2012-12-22
Publication date: 2013-08-08
Also published as: CN103248604A; CN103248604B

Abstract

Embodiments of the present invention relate to the technical field of communications, and disclosed are a method for enhancing voice over Internet protocol (VoIP) data uplink coverage, a terminal and a base station. The method comprises: determining a logic channel, an air interface overhead compression manner and a target transmission block (TB) size of VoIP data to be transmitted; based on the determined target TB size, compressing, according to the determined air interface overhead compression manner, an air interface overhead of the VoIP data to be transmitted on the determined logic channel, so as to obtain target VoIP data; and sending the target VoIP data to the base station. The embodiments of the present invention are mainly used for transmission of VoIP data.

Description

Method, terminal and base station for enhancing uplink coverage of VoIP data

This application claims the priority of the Chinese application filed on February 1, 2012, the application number is 201210022542.X, and the invention name is "Method, Terminal and Base Station for Enhancing Upstream Coverage of VoIP Data", the entire contents of which are incorporated by reference. In this application.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method, a terminal, and a base station for enhancing uplink coverage of VoIP (voice over Internet Protocol) data. Background technique

LTE (Long Term Evolution) as UMTS (Universal Mobile)

The evolution of Telecommunications System (Universal Mobile Telecommunications System) has become a new generation of wireless communication standards, which can better support the packet services widely used in the Internet field, while providing more efficient spectrum utilization and greater system throughput. To support the growing mobile broadband business.

In the prior art, in order to alleviate the voice coverage hole problem in the LTE system, the LTE system introduces a TTI bundling (Transmission Time Interval Bundling) technology and a ROHC (Root Head Head Compression) technology. The uplink coverage of VoIP in LTE systems has been enhanced to some extent.

However, although TTI bundling technology and ROHC technology have enhanced the uplink coverage of LTE system VoIP, its uplink voice coverage still has a gap compared to other wireless communication systems, such as UMTS voice coverage, how to significantly enhance the voice coverage of LTE systems. It is a problem that needs to be solved. Summary of the invention

The embodiments of the present invention provide a method, a terminal, and a base station for enhancing uplink coverage of VoIP data, which can significantly enhance uplink coverage of VoIP data. In order to achieve the above object, the following technical solutions are used in the embodiments of the present invention:

A method for enhancing uplink coverage of VoIP data, including:

Determining a logical channel, an air interface overhead compression mode, and a target transport block size TB size of the VoIP data to be transmitted;

The air interface overhead of the VoIP data to be transmitted on the determined logical channel is compressed according to the determined air interface overhead compression manner to obtain target VoIP data, according to the determined target TB size;

Transmitting the target VoIP data to a base station.

A method for enhancing uplink coverage of VoIP data, including:

Receiving the target VoIP data sent by the terminal, the air interface cost of the target VoIP data is compressed by the terminal according to the target TB size determined by the terminal, and according to the air interface overhead determined by the terminal;

And performing the restoration processing on the received target VoIP data according to the air interface overhead compression manner of the target VoIP data.

A terminal, comprising:

a determining unit, configured to determine a logical channel, an air interface overhead compression mode, and a target transport block size TB size of the VoIP data to be transmitted;

a processing unit, configured to compress, according to the target TB size determined by the determining unit, the air interface overhead of the VoIP data to be transmitted on the logical channel determined by the determining unit according to the determined air interface overhead compression manner to obtain the target VoIP Data; a base station, comprising:

a receiving unit, configured to receive the target VoIP data sent by the terminal, where the air interface cost of the target VoIP data is compressed by the terminal according to the target TB size determined by the terminal, and according to the air interface cost determined by the terminal;

a processing unit, configured to perform an air interface overhead compression manner according to the target VoIP data, The target VoIP data received by the receiving unit is subjected to a restoration process. The method, the terminal, and the base station for enhancing the uplink coverage of the VoIP data provided by the embodiment of the present invention, the terminal compresses the air interface overhead of the VoIP data to be transmitted according to the air interface overhead compression mode determined by the terminal, and enables the target VoIP data after the compression operation to be only The part of the air interface protocol header is included, which reduces the size of the target VoIP data, and improves the uplink successful transmission distance under the same power limitation, thereby effectively solving the uplink coverage hole problem and obviously enhancing the uplink coverage of the VoIP data. Therefore, with the technical solution of the embodiment of the present invention, uplink coverage of VoIP data can be effectively enhanced. DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly described, and the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

1 is a flowchart of a method for enhancing uplink coverage of VoIP data according to an embodiment of the present invention; FIG. 2 is a flowchart of a method for enhancing uplink coverage of VoIP data according to Embodiment 2 of the present invention; FIG. 3 is a flowchart of enhancing VoIP data uplink according to Embodiment 3 of the present invention; A flowchart of a method for overlaying; FIG. 4 is a schematic diagram of compressing a voice frame according to Embodiment 3 of the present invention;

FIG. 5 is a schematic diagram of compressing a voice frame according to Embodiment 3 of the present invention; FIG.

6 is a schematic diagram of compressing a voice frame according to Embodiment 3 of the present invention;

7 is a schematic diagram of a terminal in Embodiment 4 of the present invention;

8 is a schematic diagram of a base station according to Embodiment 5 of the present invention;

FIG. 9 is a schematic diagram of a base station according to Embodiment 5 of the present invention. detailed description The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but 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 invention without departing from the inventive scope are the scope of the present invention.

In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present invention,

A brief description of the VoIP data. Currently, the LTE system uses a packet domain to transmit VoIP data. The VoIP data may include an RTP (Real-time Transport Protocol) header, a UDP (User Datagram Protocol) header, an IP (Internet Protocol) protocol, and a PDCP ( Packet Data Convergence Protocol (Packet Data Convergence Protocol) header, MAC (Medium Access Control) header, and RLC (Radio Link Control) header. The PDCP header is used for encryption or decryption of the VoIP data, so the PDCP header cannot generally be removed.

In addition, in the LTE system, VoIP data includes SID (Silence Information Description) frames and voice frames. The SID frame indicates a data frame generated during a non-talk period, and its size is fixed to 7 bytes. The speech frame represents a data frame generated during a normal call, and its size differs depending on its AMR Codec (Adaptive Multi-Rate Codec) mode.

As shown in FIG. 1, the first embodiment of the present invention provides a method for enhancing uplink coverage of VoIP data, including the following steps:

Step 11: The terminal determines a logical channel, an air interface overhead compression mode, and a target transmission block size TB size (Transmission Block Size) of the VoIP data to be transmitted.

For example, the manner in which the terminal determines the logical channel, the air interface overhead compression mode, and the target transport block size TB size of the VoIP data to be transmitted may be:

The first base station sends an air interface overhead compression command to the terminal, and the air interface overhead compression command includes a logical channel, an air interface overhead compression mode, and a target transmission of the VoIP data to be transmitted. The indication of the block size TB size, the terminal receives the air interface overhead compression command sent by the base station, determines a logical channel for transmitting VoIP data according to the identifier of the logical channel, and determines to transmit the VoIP according to the indication of the air interface overhead compression mode. The air interface overhead compression mode of the data, and determining the target TB size for transmitting the VoIP data according to the indication of the target TB size. In the mode, the logical channel, the air interface overhead compression mode, and the target TB size are all notified to the terminal by the base station in a signaling manner.

In a second mode, the base station sends an air interface overhead compression command to the terminal, where the air interface overhead compression command includes an identifier of a logical channel to be transmitted VoIP data, and the terminal receives an air interface overhead compression command sent by the base station, according to the The identification of the logical channel, determining the logical channel of the VoIP data to be transmitted. The terminal determines an air interface overhead compression mode and a target TB size of the VoIP data to be transmitted according to a preset. In the second mode, in the logical channel, the air interface overhead compression mode, and the target TB size, the logical channel is notified by the base station to the terminal by means of signaling, and the air interface overhead compression mode and the target TB size are preset. Preferably, for example, the related protocol for transmitting VoIP data is specified, and the terminal determines the air interface overhead compression mode and the target TB size of the VoIP data to be transmitted according to a preset.

In a third mode, the base station sends an air interface overhead compression command to the terminal, where the air interface overhead compression command includes an identifier of a logical channel to be transmitted VoIP data, and the terminal receives an air interface overhead compression command sent by the base station, according to the The identification of the logical channel, determining the logical channel of the VoIP data to be transmitted. The terminal determines, according to a preset, an air interface overhead compression mode of the VoIP data to be transmitted; the terminal receives an uplink grant sent by the base station, where the uplink grant carries a logical channel identifier and a TB size; When the logical channel identifier carried in the same is the same as the identifier of the logical channel included in the air interface overhead compression command, the terminal determines the TB size carried by the uplink authorization as the target TB size of the VoIP data to be transmitted. In the third mode, in the logical channel, the air interface overhead compression mode, and the target TB size, the logical channel is notified by the base station to the terminal by means of signaling, and the air interface overhead compression mode is preset, for example. It may be specified by a related protocol for transmitting VoIP data, and the terminal determines to be determined according to a preset setting. The air interface overhead compression mode for transmitting VoIP data, and the target TB size is notified by the base station to the terminal by using an uplink grant. As is known to those skilled in the art, the base station needs to schedule the uplink data transmission of the terminal by using the uplink grant, and specify the physical location and modulation mode of the time-frequency resource for the uplink data transmission of the terminal. Therefore, the base station can target the target by using the uplink authorization. The TB size is notified to the base station. It can be understood that, because the terminal has multiple types of uplink data transmission, the base station needs to send multiple uplink grants within a certain period of time. In order for the terminal to know which uplink grant is the uplink grant for scheduling the transmission of the current VoIP data, the base station carries the logical channel identifier in the uplink grant, and the terminal compares the logical channel identifier and the air interface overhead compression command in the uplink grant. The logical channel identifier, if the two are the same, the terminal knows the uplink authorization of the uplink authorization for the transmission of the VoIP data, thereby determining the TB size in the uplink grant as the target TB size of the VoIP data to be transmitted.

In a fourth method, the base station sends an air interface overhead compression command to the terminal, where the air interface overhead compression command includes an identifier of a logical channel to be transmitted VoIP data and an indication of the air interface overhead compression mode, where the terminal receives the base station The air interface overhead compression command is sent, determining a logical channel of the VoIP data to be transmitted according to the identifier of the logical channel, and determining an air interface overhead compression mode of the VoIP data to be transmitted according to the indication of the air interface overhead compression mode; An uplink grant sent by the base station, where the uplink grant carries a logical channel identifier and a TB size, and when the logical channel identifier carried in the uplink grant is the same as the identifier of the logical channel included in the air interface overhead command, The TB size carried by the uplink grant is determined as the target TB size of the VoIP data to be transmitted. This method is similar to the third method. The difference is that the air interface overhead compression mode is notified by the base station to the terminal through the air interface overhead compression command instead of being preset.

It should be noted that the logical channel, the air interface overhead compression mode, or the target TB size of multiple VoIP data transmissions may be the same, that is, any one of the above three parameters may be continuously used by the terminal for a period of time, if When the base station notifies the above parameters by signaling, it can only notify once in a period of time. Before the next signaling arrives, the terminal will use the current signaling pass. The known parameters transmit VoIP data multiple times. Therefore, preferably, the air interface overhead compression command may be high layer signaling such as RRC signaling of the RRC, and the sending frequency is low relative to the uplink grant.

It should be noted that, in an embodiment of the present invention, whether the terminal determines the target TB size of the VoIP data to be transmitted through the uplink authorization, and the terminal performs the VoIP data transmission, the uplink sent by the base station is required. Authorized scheduling, in order for the terminal to know which uplink grant is the uplink grant for scheduling the transmission of the current VoIP data, the uplink grant may carry at least one of the TB size and the logical channel identifier, and the terminal will have determined The target TB size of the VoIP data is compared with the TB size in the uplink grant, or the terminal compares the logical channel identifier of the current VoIP data that has been determined with the logical channel identifier in the uplink grant, when When the terminals are the same, the terminal can determine that the uplink grant is an uplink grant for scheduling transmission of the current VoIP data, and then the terminal sends the VoIP data under the scheduling of the uplink grant.

In the embodiment of the present invention, the uplink grant may be an uplink grant indicated by a PDCCH (Physical Downlink Control Channel). Alternatively, the uplink authorization may also be a semi-static uplink authorization of the configuration.

Step 12: The terminal compresses the air interface overhead of the VoIP data to be transmitted on the determined logical channel according to the determined air interface overhead compression manner according to the determined target TB size, to obtain target VoIP data.

In this embodiment, the manner in which the terminal compresses the VoIP data to be transmitted on the logical channel may be any one of the following methods:

Manner 1: The terminal first deletes an RTP header, a UDP header, and an IP header of the VoIP data to be transmitted, and deletes the VoIP data of the RTP header, the UDP header, and the IP header. Encrypting; then, the terminal may only add a PDCP header to the encrypted VoIP data, and perform PDCP layer filling on the VoIP data with the added PDCP header to obtain target VoIP data; or, in practical applications The terminal may also perform PDCP layer filling on the encrypted VoIP data, and then fill the VoIP layer after the PDCP layer. The data is added to the PDCP header to obtain the target VoIP data.

Manner 2: The terminal first deletes an RTP header, a UDP header, and an IP header of the VoIP data to be transmitted, and encrypts the VoIP data that is deleted by the RTP header, the UDP header, and the IP header. . And adding a PDCP header to the encrypted VoIP data, performing PDCP layer filling on the VoIP data added to the PDCP header, and adding a media access control MAC header to the PDCP layer-filled VoIP data. Obtaining target VoIP data; or, the terminal may also

Performing PDCP layer filling on the encrypted VoIP data, adding a PDCP header to the VoIP data filled in the PDCP layer, and adding a MAC header to the VoIP data with the added PDCP header to obtain target VoIP data; or The terminal may also add a PDCP header to the encrypted VoIP data, add a MAC header to the VoIP data with the added PDCP header, and perform MAC layer filling on the VoIP data of the added MAC header to obtain target VoIP data. Alternatively, the terminal may further add a PDCP header to the encrypted VoIP data, perform MAC layer filling on the VoIP data with the added PDCP header, and add a MAC header to the MAC layer-filled VoIP data to obtain Target VoIP data.

In a third mode, the terminal first deletes the RTP header, the UDP header, and the IP header of the VoIP data to be transmitted, and encrypts the VoIP data of the RTP header, the UDP header, and the IP header. Adding a PDCP header to the encrypted VoIP data, and expanding the added PDCP header, performing PDCP layer filling on the VoIP data of the added and extended PDCP header to obtain target VoIP data; or The terminal may further perform PDCP layer filling on the encrypted VoIP data, add a PDCP header to the PDCP layer-filled VoIP data, and expand the added PDCP header to obtain target VoIP data.

Specifically, the extending, by the terminal, the added PDCP header includes extending a specified byte to the added PDCP header, and carrying information such as a VoIP data type in the specified byte.

The target VoIP data is a MAC PDU (Protocol Data Unit). It can be understood that, for example, if the base station notifies the air interface overhead compression mode in the air interface overhead compression instruction, it can notify an identifier, for example, 1, and the terminal can learn that the air interface overhead compression mode is mode one.

Step 13: The terminal sends the target VoIP data to a base station.

Specifically, the terminal sends the target VoIP data to the base station by using at least one uplink subframe, and the base station performs a restoration process on the target VoIP data to obtain the VoIP data to be transmitted before compression.

The terminal may continuously send at least one uplink subframe carrying the target VoIP data to the base station, so that the base station performs corresponding restoration and decompression processing according to the manner in which the target VoIP data is compressed to obtain the compression. The VoIP data to be transmitted.

In practical applications, the technical solution described in the embodiments of the present invention can be applied to other systems that want to enhance the uplink coverage of the packet domain service, such as WiMax (Worldwide Interoperability for Microwave Access). Wave interconnection access system. In addition, the technical solution described in the embodiment of the present invention can also be applied to VoIP data compressed by the ROHC technology.

As can be seen from the above description, the terminal compresses the VoIP data to be transmitted of the specified logical channel according to the TB size according to the air interface overhead compression scheme, acquires the target VoIP data, and then sends the target VoIP data to the base station, so that the base station will The target VoIP data is subjected to a restoration process to obtain the VoIP data to be transmitted before the compression. Since the target VoIP data after the compression operation only includes a part of the air interface protocol header, the size of the target VoIP data is reduced, and the same power limitation is performed. The uplink successful transmission distance is improved, thereby effectively solving the uplink coverage hole problem and enhancing the uplink coverage of the VoIP data. Therefore, with the terminal of the embodiment of the present invention, uplink coverage of VoIP data is enhanced.

The terminal compresses the VoIP data to be compressed according to the TB size according to the air interface overhead compression scheme, obtains the target VoIP data, and sends the target VoIP data to the base station through at least one uplink subframe, so that the base station will The target VoIP data is restored The VoIP data to be compressed is obtained, because the target VoIP data after the compression operation only includes a part of the air interface protocol header, which reduces the size of the target VoIP data, and improves the uplink successful transmission distance under the same power limitation, thereby effectively The problem of uplink coverage holes is solved, and the uplink coverage of VoIP data is enhanced. Therefore, the uplink coverage of the VoIP data is enhanced by using the technical solution of the embodiment of the present invention. Corresponding to the method described in FIG. 1 , as shown in FIG. 2 , the second embodiment of the present invention provides a method for enhancing uplink coverage of VoIP data, including the following steps:

Step 21: The base station receives the target VoIP data that is sent by the terminal, and the air interface cost of the target VoIP data is compressed by the terminal according to the target TB size determined by the terminal, and according to the air interface cost determined by the terminal.

Specifically, the base station may receive, by the terminal, at least one uplink subframe that carries the target VoIP data continuously sent by the terminal;

Step 22: The base station performs a restoration process on the received target VoIP data according to an air interface overhead compression manner of the target VoIP data.

In this embodiment, the base station performs a corresponding restoration process on the target VoIP data according to the air interface overhead compression mode of the target VoIP data, and the restoration process may be any one of the following:

In a first mode, when the target VoIP data is the target VoIP data obtained by compressing a pair of the VoIP data to be transmitted in the manner of step 12 in the first embodiment, the base station may directly The MAC PDU of the target VoIP data is delivered to the RLC layer of the logical channel, and the target VoIP data is reordered according to the lower 5 characters of the PDCP SN (Serial Number), and then according to the indication indicated by the PDCP header. Deleting the PDCP layer's padding data and the PDCP header in the reordered target VoIP data, and decrypting the target VoIP data after the removal operation, and restoring the decrypted target VoIP RTP header, UDP header, and IP header of the data to obtain the VoIP to be transmitted before the terminal is compressed data.

Manner 2: When the target VoIP data is the target VoIP data obtained by compressing the VoIP data to be transmitted according to the method 2 in step 12 in the first embodiment, the base station will use the target VoIP. The data generated MAC SDU (Service Data Unit) is delivered to the RLC layer of the logical channel indicated by the MAC, and the MAC SDU is reordered according to the lower 5 characters of the PDCP SN, and then according to the PDCP. The type of the target VoIP data indicated by the header removes the PDCP header and the MAC header in the reordered target VoIP data, and the padding data of the PDCP layer or the padding data of the MAC layer, and the target VoIP after the removal operation is performed. The data is decrypted, and then the RTP header, the UDP header, and the IP header of the decrypted target VoIP data are restored to obtain the VoIP data to be transmitted before the terminal is compressed.

Manner 3: When the target VoIP data is the target VoIP data obtained by compressing the VoIP data to be transmitted according to the third method in step 12 in the first embodiment, the base station may use the target VoIP data The MAC PDU data of the VoIP data is delivered to the RLC layer of the logical channel, and the target VoIP data is reordered according to the lower 5 characters of the PDCP SN, and then the indication according to the extended portion of the PDCP header is removed. Recharging the PDCP layer in the target VoIP data of the target VoIP data and the PDCP header, and decrypting the target VoIP data after the removal operation, and restoring the RTP of the decrypted target VoIP data The header, the UDP header, and the IP header are used to obtain the VoIP data to be transmitted before the terminal is compressed.

As can be seen from the above description, the base station sends an air interface overhead compression command that carries at least the identifier of the logical channel to the terminal, and preferentially schedules the uplink grant of the logical channel, so that the terminal compresses the VoIP data to be transmitted on the logical channel. Obtaining the target VoIP data, and then performing the restoration processing on the target VoIP data sent by the terminal to obtain the VoIP data to be transmitted. Since the target VoIP data after the compression operation only includes a part of the air interface protocol header, the target VoIP data is reduced. The size of the uplink improves the uplink transmission distance under the same power limitation, thereby effectively solving the uplink coverage hole problem of the terminal and enhancing the uplink coverage of the VoIP data. Cause Therefore, the uplink coverage of the VoIP data is enhanced by using the technical solution of the embodiment of the present invention.

Optionally, in an embodiment of the present invention, before the step 21, that is, before the base station receives the target VoIP data sent by the terminal by using the logical channel, the method further includes:

The base station sends an air interface overhead compression command to the terminal, where the air interface cost compression command includes an identifier of the logical channel, an indication of the air interface overhead compression mode, and an indication of the target TB size, so that the terminal is configured according to the terminal The air interface overhead compression instruction determines a logical channel, an air interface overhead compression mode, and a target TB size of the VoIP data to be transmitted.

The base station sends an air interface overhead compression instruction to the terminal, where the air interface overhead compression instruction includes an identifier of the logical channel, so that the terminal determines a logical channel to be transmitted VoIP data according to the air interface overhead compression instruction;

The base station sends an air interface overhead compression instruction to the terminal, where the air interface cost compression instruction includes an identifier of the logical channel, so that the terminal determines a logical channel of the VoIP data to be transmitted according to the air interface overhead compression instruction; The terminal sends an uplink grant, where the uplink grant carries the same logical channel identifier and TB size as the identifier of the logical channel in the air interface cost compression command, so that the terminal performs the uplink according to the uplink grant. The TB size carried in the authorization is determined as the target TB size of the VoIP data to be transmitted;

The base station sends an air interface overhead compression instruction to the terminal, where the air interface cost compression instruction includes an identifier of the logical channel and an indication of the air interface cost compression mode, so that the terminal determines to be determined according to the air interface overhead compression instruction. a logical channel and an air interface overhead compression mode for transmitting VoIP data; sending an uplink grant to the terminal, where the uplink grant carries The logical channel in the pin compression command identifies the same logical channel identifier and TB size, so that the terminal determines the TB size carried in the uplink grant as the target TB size of the VoIP data to be transmitted according to the uplink grant.

It should be noted that, in an embodiment of the present invention, whether the terminal determines the target TB size of the VoIP data to be transmitted through the uplink authorization, and the terminal performs the VoIP data transmission, the uplink authorization issued by the base station is required. The scheduling, in order for the terminal to know which uplink grant is the uplink grant for scheduling the transmission of the current VoIP data, the uplink grant may carry at least one of the TB size and the logical channel identifier, and the terminal will determine the original The target TB size of the secondary VoIP data is compared with the TB size in the uplink grant, or the terminal compares the logical channel identifier of the current VoIP data that has been determined with the logical channel identifier in the uplink grant, when the two When the same, the terminal can determine that the uplink grant is an uplink grant for scheduling the transmission of the current VoIP data, and then the terminal sends the VoIP data under the scheduling of the uplink grant.

In this embodiment, the uplink grant may be an uplink grant indicated by the PDCCH or a configured semi-static uplink grant, and the air interface overhead compression command is preferably a RRC signaling.

The method for enhancing uplink coverage of VoIP data of the present invention will be described in detail below through a specific embodiment.

As shown in FIG. 3, Embodiment 3 of the present invention provides a method for enhancing uplink coverage of VoIP data, including the following steps:

Step 31: The base station determines the target TB size.

In this embodiment, the base station may determine an AMR Codec mode according to the pre-acquired voice frame, and then determine a voice frame static load corresponding to the AMR Codec mode, and further according to the voice frame static load. Determine the TB size supported by the air interface. For example, when the base station determines that the AMR Codec mode of the pre-acquired speech frame is 7.4 kbps, it can be determined by querying Table 1 that the speech frame static load corresponding to 7.4 kbps is 20 bytes. According to the definition of the existing LTE physical layer protocol TS36.213, the TB size can only be 18 bytes, 22 bytes, 26 bytes, 28 words. One of the sections, 32 bytes and 41 bytes. Therefore, the base station can only select one of the above values that is closest to the voice frame payload and slightly larger than the voice frame payload, as the TB size. Therefore, the base station determines that the target TB size is 22 bytes.

Table 1

Step 32: The base station sends an air interface overhead compression command and an uplink authorization to the terminal.

The air interface overhead compression command includes an identifier of the logical channel, an indication of the air interface cost compression mode, and an indication of the target TB size, where the uplink authorization carries an indication indicated in the air interface overhead compression instruction. The TB size with the same target TB size. After receiving the uplink authorization, the terminal may perform the comparison according to the TB size in the uplink authorization and the target TB size indicated in the air interface overhead compression instruction, so as to determine that the uplink authorization is an uplink authorization for scheduling the current VoIP data transmission.

The air interface overhead compression command may be RRC signaling, and the uplink authorization may be an uplink grant indicated by the PDCCH or a configured semi-static uplink grant.

Step 33: The identifier of the logical channel of the terminal determines a logical channel of the VoIP data to be transmitted, and determines an air interface overhead compression mode of the VoIP data to be transmitted according to the indication of the air interface overhead compression mode in the air interface overhead compression instruction, and Determining a target TB size of the VoIP data to be transmitted according to the indication of the target TB size in the air interface overhead compression instruction.

It should be noted that, in the embodiment of the present invention, how the terminal determines the logical channel, the air interface overhead compression mode, and the target transport block size TB size of the VoIP data to be transmitted is not limited, and may have other manners, as described in the foregoing. I won't go into details here.

Step 34: The terminal sends the determined logical letter according to the determined target TB size. The air interface overhead of the VoIP data to be transmitted on the track is compressed according to the determined air interface overhead compression manner to obtain the target VoIP data.

In this embodiment, the terminal may perform a corresponding compression operation according to the type of the VoIP data to be transmitted.

As shown in FIG. 4, when the VoIP data to be transmitted is a voice frame, the terminal first removes an RTP header, a UDP header, and an IP header of the voice frame, and then encrypts the voice frame after the removal operation. And add only 1 byte of the PDCP header to the encrypted speech frame. Since the voice frame size is 20 bytes, the terminal only needs to increase the 1-byte PDCP layer Padding (filling data) to ensure that the target TB size is 22 bytes.

When the VoIP data to be transmitted is a SID frame, the terminal first removes an RTP 4 header, a header, an IP header of the SID frame, and then encrypts the SID frame after the removal operation, and Add only 1 byte of the PDCP header to the encrypted SID frame. Since the size of the SID frame is 7 bytes, the terminal only needs to increase the PDCP layer Padding of 14 bytes to ensure that the target TB size is 22 bytes.

In this embodiment, the order in which the PDCP header is added to the terminal and the PDCP layer is filled is not limited.

The PDCP header includes an lbit D/C domain and a 7-bit PDCP SN domain. The D/C field indicates the type of the VoIP data to be transmitted. Specifically, the D/C domain may determine whether the VoIP data to be transmitted is a voice frame or a SID frame. In addition, when the D/C domain is extended to 2 bits, the PDCP SN domain may be compressed to 6 bits to ensure that the PDCP header occupies 1 byte.

As can be seen from FIG. 4, the target VoIP data is a MAC PDU.

Step 35: The terminal sends the target VoIP data to the base station by using at least one uplink subframe according to the scheduling of the uplink grant sent by the base station.

Step 36: The base station receives the target VoIP data, and performs the restoration processing on the target VoIP data according to the air interface overhead compression manner of the target VoIP data to obtain the VoIP data to be transmitted before the terminal is compressed. Referring to FIG. 4, since the terminal does not add a MAC header when compressing the VoIP data to be transmitted, the MAC layer of the base station directly delivers the received MAC PDU to the RLC layer of the logical channel without performing Demultiplexing. (demultiplexing) processing. At the same time, since the terminal does not increase the RLC header, the base station can reorder the target VoIP data by using the lower 5 characters in the PDCP SN.

Further, the base station removes Padding and the PDCP header of the PDCP layer in the reordered target VoIP data according to the type of the target VoIP data indicated by the D/C field of the PDCP header. Specifically, when the target VoIP data is a voice frame, the base station removes 1 byte Padding and the PDCP header from the reordered target VoIP data; when the target VoIP data is a SID frame, The base station removes 14 bytes of Padding and the PDCP header from the reordered target VoIP data.

Finally, the base station decrypts the target VoIP data after the removal operation, and then restores the decrypted target according to the previously received or the last restored uplink VoIP packet including the RTP header, the UDP header, and the IP header. The RTP header, the UDP header, and the IP header of the VoIP data are used to obtain the VoIP data to be transmitted before the terminal is compressed.

As can be seen from the above description, the terminal compresses the VoIP data to be transmitted of the specified logical channel according to the TB size according to the air interface overhead compression scheme, obtains the target VoIP data, and sends the target VoIP data to the at least one uplink subframe. The base station is configured to perform the restoration processing on the target VoIP data to obtain the VoIP data to be transmitted. Since the target VoIP data after the compression operation only includes a part of the air interface protocol header, the size of the target VoIP data is reduced. Under the same power limitation, the uplink successful transmission distance is improved, thereby effectively solving the uplink coverage hole problem and enhancing the uplink coverage of VoIP data. Therefore, the uplink coverage of the VoIP data is enhanced by using the technical solution of the embodiment of the present invention. In another embodiment of the present invention, the terminal uses different air interface overhead compression modes. In this case, in step 34, the terminal may perform according to the type of the VoIP data to be transmitted. The corresponding compression operation.

As shown in FIG. 5, when the VoIP data to be transmitted is a voice frame, the terminal first removes an RTP header, a UDP header, and an IP header of the voice frame, and then encrypts the voice frame after the removal operation. And add only 1 byte of the PDCP header and 1 byte of the MAC header to the encrypted speech frame. Since the size of the voice frame is 20 bytes, the terminal does not increase the PDCP layer Padding or the MAC layer Padding to ensure that the target TB size is 22 bytes.

When the VoIP data to be transmitted is a SID frame, the terminal first removes an RTP 4 header, a header, an IP header of the SID frame, and then encrypts the SID frame after the removal operation, and Only one byte of the PDCP header and one byte of the MAC header are added to the encrypted SID frame. Since the size of the SID frame is 7 bytes, the terminal only adds 13 bytes of the PDCP layer Padding or 13 bytes of the MAC layer Padding to ensure that the target TB size is 22 bytes. In an actual application, the terminal may perform the operation of the PDCP layer before performing the operation of the MAC layer. Specifically, the terminal may first add a 1-byte PDCP header, and then perform 13-byte PDCP layer padding, and then add a 1-byte MAC header; or, the terminal may also perform 13-byte first. The PDCP layer is padded, and the PDCP header of 1 byte is further added, and then the MAC header of 1 byte is added; or, the terminal may also add only a 1-byte PDCP header, and then add a 1-byte MAC header, and then The 13-byte MAC layer padding is performed; or the terminal may also add only a 1-byte PDCP header, then perform 13-byte MAC layer padding, and then add 1 byte of the MAC header.

The step of adding the PDCP header to the terminal and performing the PDCP layer filling is not limited in this embodiment.

The PDCP header includes an lbit D/C domain and a 7-bit PDCP SN domain. The D/C field indicates the type of the VoIP data to be transmitted. In addition, when the D/C field is extended to 2 bits, the PDCP SN field can be compressed to 6 bits to ensure that the PDCP header occupies 1 byte.

As can be seen from Figure 5, the target VoIP data is a MAC PDU.

At this time, in step 36, referring to FIG. 5, the terminal is connected to the VoIP to be transmitted. When the data is compressed, the MAC header is added, so the base station MAC delivers the MAC SDU generated by the target VoIP data to the RLC layer of the logical channel indicated by the MAC header. At the same time, since the terminal does not increase the RLC header, the base station can reorder the MAC SDU by using the lower 5 characters in the PDCP SN.

Further, the base station removes the MAC header and the PDCP header of the reordered target VoIP data according to the type of the target VoIP data indicated by the D/C field of the PDCP header, and the MAC layer. Fill data or padding data of the PDCP layer. When the target VoIP data is a voice frame, the base station removes the MAC header and the PDCP header only for the reordered target VoIP data. When the target VoIP data is a SID frame, if the SID frame only adds the PDCP layer padding when compressed, the base station removes the MAC header and the PDCP from the reordered target VoIP data. a header and 13 bytes of the PDCP layer Padding; if the SID frame only adds the MAC layer padding when performing compression, the base station removes the MAC header from the reordered target VoIP data, 13 The padding of the MAC layer of bytes, and the PDCP header.

In another embodiment of the present invention, the terminal uses different air interface overhead compression modes. In this case, in step 34, the terminal may perform a corresponding compression operation according to the type of the VoIP data to be transmitted.

As shown in FIG. 6, when the VoIP data to be transmitted is a voice frame, the terminal first removes an RTP header, a UDP header, and an IP header of the voice frame, and then encrypts the voice frame after the removal operation. And add only 2 bytes of PDCP header to the encrypted speech frame. Since the voice frame size is 20 bytes, the terminal can no longer increase the PDCP layer Padding to ensure that the TB size is 22 bytes. When the VoIP data to be transmitted is a SID frame, the terminal first removes an RTP 4 header, a header, an IP header of the SID frame, and then encrypts the SID frame after the removal operation, and Add a 2-byte PDCP header to the encrypted SID frame. Since the size of the SID frame is 7 bytes, the terminal only adds 13 bytes of the PDCP layer Padding to ensure that the TB size is 22 bytes.

The PDCP header includes a lbit E (extension, extension) domain, a 7-bit PDCP SN domain, and an 8-bit PT domain, or a 2-bit D/C domain and a 6-bit PDCP SN domain. The E field is used to indicate whether the PDCP header has an extension. The PT field is an extended part of the PDCP header and is used to indicate the type of the VoIP data to be transmitted.

As can be seen from FIG. 6, the target VoIP data is a MAC PDU.

At this time, in step 36, referring to FIG. 6, since the terminal does not increase the MAC header when compressing the VoIP data to be transmitted, the base station MAC layer directly delivers the received MAC PDU to the logic. The RLC layer of the channel does not perform Demultiplexing processing. At the same time, since the terminal does not use the RLC header, the base station can reorder the target VoIP data by using the lower 5 bits of the PDCP SN.

Further, the base station removes the PDCP layer Padding and the PDCP header of the reordered target VoIP data according to the type of the target VoIP data indicated by the extended portion (ie, the PT domain) of the PDCP header. Specifically, when the target VoIP data is a voice frame, the base station removes a 2-byte PDCP header from the reordered target VoIP data. When the target VoIP data is a SID frame, the base station removes a 2-byte PDCP header and a 13-byte PDCP layer Padding for the reordered target VoIP data.

Finally, the base station decrypts the target VoIP data after the removal operation, and then restores according to the previously received or the last restored uplink VoIP packet including the RTP header, the UDP header, and the IP header. RTP header of the target VoIP data after operation, The UDP header and the IP header are used to obtain the VoIP data to be transmitted before the terminal is compressed. Corresponding to the foregoing method, as shown in FIG. 7, Embodiment 4 of the present invention provides a terminal, including:

a determining unit 91, configured to determine a logical channel, an air interface overhead compression mode, and a target transport block size TB size of the VoIP data to be transmitted;

The processing unit 92 is configured to determine the unit according to the target TB size determined by the determining unit 91.

The air interface overhead of the VoIP data to be transmitted on the determined logical channel is compressed according to the air interface overhead compression method determined by the determining unit 91 to obtain the target VoIP data;

And a sending unit, configured to send the target VoIP data acquired by the processing unit 92 to the base station. Optionally, in an embodiment of the present invention, the determining unit 91 is specifically configured to:

Receiving an air interface overhead compression command sent by the base station, where the air interface cost compression instruction includes an identifier of the logical channel, an indication of the air interface overhead compression mode, and an indication of the target TB size;

Determining, according to the identifier of the logical channel, a logical channel of the VoIP data to be transmitted, determining an air interface overhead compression mode of the VoIP data to be transmitted according to the indication of the air interface overhead compression mode, and determining, according to the indication of the target TB size, Target TB size for transmitting VoIP data;

Optionally, in another embodiment of the present invention, the determining unit 91 is specifically configured to:

Receiving an air interface overhead compression command sent by the base station, where the air interface cost compression instruction includes an identifier of the logical channel, and determining, according to the identifier of the logical channel, a logical channel to which VoIP data is to be transmitted;

Determining, according to a preset, an air interface overhead compression mode and a target TB size of the VoIP data to be transmitted;

Receiving an air interface overhead compression command sent by the base station, where the air interface cost compression instruction includes an identifier of the logical channel, and determining, according to the identifier of the logical channel, a VoIP data to be transmitted. Logical channel

Determining an air interface overhead compression mode of the VoIP data to be transmitted according to a preset setting;

Receiving an uplink grant sent by the base station, where the uplink grant carries a logical channel identifier and a TB size;

When the logical channel identifier carried in the uplink grant is the same as the identifier of the logical channel included in the air interface overhead compression command, the TB size carried by the uplink grant is determined as the target TB size of the VoIP data to be transmitted;

Receiving an air interface overhead compression command sent by the base station, where the air interface cost compression instruction includes an identifier of the logical channel and an indication of the air interface overhead compression mode;

Determining, according to the identifier of the logical channel, a logical channel to be transmitted VoIP data, and determining an air interface overhead compression mode of the VoIP data to be transmitted according to the indication of the air interface overhead compression mode;

When the logical channel identifier carried in the uplink grant is the same as the identifier of the logical channel included in the air interface overhead command, the TB size carried by the uplink grant is determined as the target TB size of the VoIP data to be transmitted.

Optionally, in an embodiment of the present invention, when performing the compression of the air interface overhead, the processing unit 92 is specifically configured to:

Deleting the real-time transport protocol of the VoIP data to be transmitted, the RTP header, the user data packet protocol, the UDP header, and the protocol IP header of the Internet;

Encrypting the VoIP data of the RTP header, the UDP header, and the IP header deleted;

Adding a packet data convergence protocol PDCP header to the encrypted VoIP data, and the boosting port 3⁄4>Lf/i5 -3⁄4L j i_ ^ 兴 TO AH PJ 仲 VOLT 3⁄4x or,

And performing PDCP layer filling on the encrypted VoIP data, and adding a PDCP header to the PDCP layer-filled VoIP data to obtain target VoIP data.

It should be noted that, in the embodiment of the present invention, the air interface overhead compression command is preferably a radio resource control protocol RRC signaling.

Deleting the RTP header, the UDP header, and the IP header of the VoIP data to be transmitted; and encrypting the VoIP data of the RTP header, the UDP header, and the IP header.

Adding a PDCP header to the encrypted VoIP data, performing PDCP layer filling on the VoIP data added to the PDCP header, and adding a media access control MAC header to the PDCP layer-filled VoIP data to obtain a target VoIP data; or,

And performing PDCP layer filling on the encrypted VoIP data, adding a PDCP header to the VoIP data filled in the PDCP layer, and adding a MAC header to the VoIP data added with the PDCP header to obtain target VoIP data;

Adding a PDCP header to the encrypted VoIP data, adding a MAC header to the VoIP data with the added PDCP header, and performing MAC layer filling on the VoIP data of the added MAC header to obtain target VoIP data; or

Adding a PDCP header to the encrypted VoIP data, performing MAC layer filling on the VoIP data with the added PDCP header, and adding a MAC header to the MAC layer-filled VoIP data to obtain target VoIP data.

Optionally, in an embodiment of the present invention, when performing the compression of the air interface overhead, the processing unit 92 is specifically configured to: Deleting the RTP header, the UDP header, and the IP header of the VoIP data to be transmitted; and encrypting the VoIP data in which the RTP header, the UDP header, and the IP header are deleted;

Adding a PDCP header to the encrypted VoIP data, and expanding the increased PDCP header, and performing PDCP layer filling on the VoIP data of the added and extended PDCP header to obtain target VoIP data;

Or,

Performing PDCP layer filling on the encrypted VoIP data, adding a PDCP header to the PDCP layer-filled VoIP data, and expanding the added PDCP header to obtain target VoIP data.

Specifically, the processing, by the processing unit 92, expanding the increased PDCP header includes: extending a specified byte to the added PDCP header, and carrying a data type of the VoIP in the specified byte.

For the working principle of the terminal in the fourth embodiment of the present invention, reference may be made to the description in the foregoing method embodiments.

Corresponding to the foregoing method, as shown in FIG. 8, the fifth embodiment of the present invention further provides a base station, including:

The receiving unit 1001 is configured to receive target VoIP data sent by the terminal, where the target VoIP is The air interface overhead of the data is compressed by the terminal according to the target TB size determined by the terminal, and according to the air interface overhead determined by the terminal;

The processing unit 1002 is configured to perform a restoration process on the target VoIP data received by the receiving unit 1001 according to the air interface overhead compression manner of the target VoIP data.

In an embodiment of the invention, as shown in FIG. 9, the base station further includes a sending unit 1003. Optionally, the sending unit 1003 is configured to: send an air interface cost compression instruction to the terminal, where the air interface cost compression instruction includes an identifier of the logical channel, an indication of the air interface overhead compression mode, and the target TB size And the indication, so that the terminal determines, according to the air interface overhead compression instruction, a logical channel, an air interface overhead compression mode, and a target TB size of the VoIP data to be transmitted;

Optionally, the sending unit 1003 is configured to: send an air interface overhead compression instruction to the terminal, where the air interface cost compression instruction includes an identifier of the logical channel, so that the terminal determines, according to the air interface overhead compression instruction, a logical channel for transmitting VoIP data;

Optionally, the sending unit 1003 is configured to: send an air interface overhead compression instruction to the terminal, where the air interface cost compression instruction includes an identifier of the logical channel, so that the terminal determines, according to the air interface overhead compression instruction, a logical channel for transmitting VoIP data; sending an uplink grant to the terminal, where the uplink grant carries a logical channel identifier and a TB size that are the same as the identifier of the logical channel in the air interface overhead compression command, so that the terminal is configured according to Determining, by the uplink authorization, the TB size carried in the uplink authorization as a target TB size of the VoIP data to be transmitted;

Optionally, the sending unit 1003 is configured to: send an air interface overhead compression instruction to the terminal, where the air interface overhead compression instruction includes an identifier of the logical channel and an indication of the air interface overhead compression manner, so that the terminal Determining, by the air interface overhead compression command, a logical channel and an air interface overhead compression mode of the VoIP data to be transmitted; sending an uplink grant to the terminal, where the uplink grant carries the same identifier as the logical channel in the air interface overhead compression command The logical channel identifier and the TB size are used to enable the terminal to determine the TB size carried in the uplink grant as the target TB size of the VoIP data to be transmitted according to the uplink grant.

It should be noted that, in the embodiment of the present invention, the air interface overhead compression command is preferably wireless. Resource Control Protocol RRC Signaling.

Optionally, in an embodiment of the present invention, when performing a reductive decompression process, the processing unit

1002 is specifically used for:

Delivering a MAC protocol data unit PDU of the target VoIP data to a radio link control RLC layer of the logical channel, and weighting the target VoIP data according to a lower 5 characters of a PDCP sequence number SN of the target VoIP data Sort

And deleting the padding data of the PDCP layer and the PDCP header in the reordered target VoIP data according to the VoIP data type indicated by the data/control D/C field of the PDCP header of the target VoIP data;

Decrypting the removed target VoIP data;

And restoring the RTP header, the UDP header, and the IP header of the decrypted target VoIP data. Optionally, in an embodiment of the present invention, when performing a reductive decompression process, the processing unit 1002 is specifically configured to:

Delivering the MAC service data unit SDU of the target VoIP data to the logical letter SDU for reordering;

Removing the MAC header and the PDCP header of the reordered target VoIP data, and the padding data of the MAC layer or the padding data of the PDCP layer according to the VoIP data type indicated by the D/C field of the PDCP header of the target VoIP data. ;

Decrypting the removed target VoIP data;

The RTP header, the UDP header, and the IP header of the decrypted target voice data are restored.

Optionally, in an embodiment of the present invention, when performing a reductive decompression process, the processing unit 1002 is specifically configured to:

Delivering the MAC PDU of the target VoIP data to the RLC layer of the logical channel, and reordering the target VoIP data according to the lower 5 characters of the PDCP SN of the target VoIP data; Removing the padding data and the PDCP header of the PDCP layer in the reordered target VoIP data according to the VoIP data type indicated by the extended portion of the PDCP header of the target VoIP data; decrypting the removed target VoIP data ;

Restore the RTP header, UDP header, and IP header of the decrypted target VoIP data.

Specifically, the working principle of the base station in Embodiment 5 of the present invention can be referred to the description in the foregoing method embodiments.

As can be seen from the above description, the terminal compresses the VoIP data to be transmitted of the logical channel and acquires the target VoIP data, and the base station performs a restoration process on the target VoIP data sent by the terminal to obtain the to-be-transmitted before the compression. VoIP data, because the target VoIP data after compression operation only contains part of the air interface protocol header, which reduces the size of the target VoIP data, and improves the uplink successful transmission distance under the same power limitation, thereby effectively solving the uplink of the terminal. Covering the hole problem and enhancing the uplink coverage of VoIP data. Therefore, with the base station of the embodiment of the present invention, uplink coverage of VoIP data is enhanced.

In summary, the technical solution of the embodiment of the present invention enhances the uplink coverage of VoIP data.

Those skilled in the art can understand that each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-described units implemented in the form of software functional units may be stored in a computer readable storage medium. The software functional unit described above is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a USB flash drive, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. medium. The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

Rights request

1. A method for enhancing uplink coverage of voice VoIP data based on Internet Protocol, the special feature comprising:

Transmitting the target VoIP data to a base station.

2. The method of claim 1 wherein

The logical channel, the air interface overhead compression mode, and the target TB size for determining the VoIP data to be transmitted include:

Or,

Receiving an air interface overhead compression instruction sent by the base station, where the air interface overhead compression instruction includes Determining, by the logical channel, a logical channel to be transmitted VoIP data according to the identifier of the logical channel;

Or

The method according to claim 1 or 2, wherein, according to the determined target TB size, the air interface overhead of the VoIP data to be transmitted on the determined logical channel is determined according to the determined air interface. The compression of the overhead compression method to obtain the target VoIP data includes: deleting a real-time transport protocol RTP header of the VoIP data to be transmitted, a user data packet protocol UDP header, and a protocol IP header of the Internet;

Encrypting the VoIP data in which the RTP header, the UDP header, and the IP header are deleted; Adding a packet data convergence protocol PDCP header to the encrypted VoIP data, and for the or

The method according to claim 1 or 2, wherein, according to the determined target TB size, the air interface overhead of the VoIP data to be transmitted on the determined logical channel is determined according to the determined air interface. Performing compression in the overhead compression manner to obtain the target VoIP data includes: deleting an RTP header, a UDP header, and an IP header of the VoIP data to be transmitted; deleting the RTP header, the UDP header, and the IP header VoIP data is encrypted;

Performing PDCP layer filling on the encrypted VoIP data, adding a PDCP header to the VoIP data filled in the PDCP layer, and adding a MAC header to the VoIP data with the added PDCP header to obtain target VoIP data; or

The method according to claim 1 or 2, wherein, according to the determined target TB size, the air interface overhead of the VoIP data to be transmitted on the determined logical channel is determined according to the determined air interface. The compression of the overhead compression method to obtain the target VoIP data includes: Deleting the RTP header, the UDP header, and the IP header of the VoIP data to be transmitted; and encrypting the VoIP data in which the RTP header, the UDP header, and the IP header are deleted;

Or,

6. The method of claim 5 wherein said expanding said increased PDCP header comprises:

The specified PDCP header is extended by a specified byte, and the data type of the VoIP is carried in the specified byte.

The method according to claim 2, wherein the air interface overhead compression command is radio resource control protocol RRC signaling.

8. A method for enhancing uplink coverage of voice VoIP data based on Internet Protocol, characterized in that:

The method according to claim 8, wherein before the receiving the target VoIP data sent by the terminal, the method further includes:

Sending an air interface overhead compression instruction to the terminal, where the air interface overhead compression instruction includes the An identifier of the logical channel, an indication of the air interface overhead compression mode, and an indication of the target TB size, so that the terminal determines, according to the air interface overhead compression instruction, a logical channel, an air interface overhead compression mode, and a target TB of the VoIP data to be transmitted. Size;

Or

Transmitting, by the terminal, an air interface overhead compression instruction, where the air interface overhead compression instruction includes an identifier of the logical channel, so that the terminal determines, according to the air interface overhead compression instruction, a logical channel to which VoIP data is to be transmitted;

Or

Sending an uplink grant to the terminal, where the uplink grant carries the same logical channel identifier and TB size as the identifier of the logical channel in the air interface cost compression command, so that the terminal according to the uplink grant The TB size carried in the uplink grant is determined as the target TB size of the VoIP data to be transmitted;

Or

Sending an air interface overhead compression command to the terminal, where the air interface cost compression instruction includes an identifier of the logical channel and an indication of the air interface overhead compression mode, so that the terminal determines, according to the air interface overhead compression instruction, the VoIP data to be transmitted. The logical channel and the air interface overhead compression mode; the uplink authorization is sent to the terminal, where the uplink authorization carries the same logical channel identifier and TB size as the identifier of the logical channel in the air interface overhead compression instruction, so that the The terminal determines, according to the uplink authorization, the TB size carried in the uplink authorization as the target TB size of the VoIP data to be transmitted.

The method according to claim 8 or 9, wherein the performing the restoration processing on the received target VoIP data according to the air interface overhead compression manner of the target VoIP data comprises: Delivering a MAC protocol data unit PDU of the target VoIP data to a radio link control RLC layer of the logical channel, and weighting the target VoIP data according to a lower 5 characters of a PDCP sequence number SN of the target VoIP data Sort

Decrypting the removed target VoIP data;

And restoring the RTP header, the UDP header, and the IP header of the decrypted target VoIP data.

The method according to claim 8 or 9, wherein the restoring the received target VoIP data according to the air interface overhead compression manner of the target VoIP data comprises:

Decrypting the removed target VoIP data;

Delivering the MAC PDU of the target VoIP data to the RLC layer of the logical channel, and reordering the target VoIP data according to the lower 5 characters of the PDCP SN of the target VoIP data;

VoIP data type indicated by the extended portion of the PDCP header of the target VoIP data And deleting the padding data and the PDCP header of the PDCP layer in the reordered target VoIP data; and decrypting the removed target VoIP data;

The method according to claim 9, wherein the air interface overhead compression command is Radio Resource Control Protocol (RRC) signaling.

14. A terminal, comprising:

a processing unit, configured to compress, according to the target TB size determined by the determining unit, the air interface overhead of the VoIP data to be transmitted on the logical channel determined by the determining unit according to the determined air interface overhead compression manner to obtain the target VoIP Data

The terminal according to claim 14, wherein the determining unit is specifically configured to:

Or,

Determining, according to a preset, an air interface overhead compression mode and a target TB size of the VoIP data to be transmitted; or,

Or

The terminal according to claim 14 or 15, wherein the processing unit is specifically configured to:

The number of VoIPs for which the RTP header, the UDP header, and the IP header are deleted According to encryption;

Adding a packet data convergence protocol PDCP header to the encrypted VoIP data, and for the or

And performing PDCP layer filling on the encrypted VoIP data, adding a PDCP header to the VoIP data filled in the PDCP layer, and adding a MAC header to the VoIP data added with the PDCP header to obtain target VoIP data; or

Deleting an RTP header, a UDP header, and an IP header of the VoIP data to be transmitted; Encrypting the VoIP data in which the RTP header, the UDP header, and the IP header are deleted;

Or,

The terminal according to claim 18, wherein the processing unit is specifically configured to extend a specified byte to the added PDCP header, and carry a data type of VoIP in the specified byte.

The terminal according to claim 15, wherein the air interface overhead compression command is Radio Resource Control Protocol (RRC) signaling.

A base station, comprising:

And a processing unit, configured to perform a restoration process on the target VoIP data received by the receiving unit according to the air interface overhead compression manner of the target VoIP data.

The base station according to claim 21, wherein the base station further includes a sending unit, where the sending unit is configured to:

Sending an air interface overhead compression command to the terminal, where the air interface cost compression command includes an identifier of the logical channel, an indication of the air interface cost compression mode, and an indication of the target TB size, so that the terminal is configured according to the air interface. The overhead compression instruction determines a logical channel, an air interface overhead compression mode, and a target TB size of the VoIP data to be transmitted; or

Sending an air interface overhead compression command to the terminal, where the air interface cost compression command includes an identifier of the logical channel, so that the terminal determines to be transmitted according to the air interface overhead compression command.

Logical channel of VoIP data;

Or

The base station according to claim 21 or 22, wherein the processing unit is specifically configured to:

The number of VoIPs indicated by the data/control D/C field of the PDCP header of the target VoIP data According to the type, the padding data of the PDCP layer and the PDCP header in the reordered target VoIP data are removed;

Decrypting the removed target VoIP data;

Removing the padding data and the PDCP header of the PDCP layer in the reordered target VoIP data according to the VoIP data type indicated by the extended portion of the PDCP header of the target VoIP data; decrypting the removed target VoIP data ;

The base station according to claim 22, wherein the air interface overhead compression command is Radio Resource Control Protocol (RRC) signaling.