WO2018137716A1

WO2018137716A1 - Method and device for keeping continuity of udc function

Info

Publication number: WO2018137716A1
Application number: PCT/CN2018/075653
Authority: WO
Inventors: 全海洋; 鲍炜; 邱禹
Original assignee: 电信科学技术研究院
Priority date: 2017-01-25
Filing date: 2018-02-07
Publication date: 2018-08-02
Also published as: CN108347750A

Abstract

The embodiments of the present invention relate to the technical field of wireless communications, especially to a method and device for keeping the continuity of a UDC function, for solving the problem in the prior art that a target base station cannot correctly decompress uplink compressed data sent by a terminal when the terminal switches from a source base station to the target base station. A first base station sends a switching request message to a second base station, and sends, to the terminal, received UDC relevant information about the second base station returned by the second base station, so that the terminal performs, after switching to the second base station, data compression processing using a compression mode determined by the UDC relevant information about the second base station. Thereby, the negotiation of a compression mode between a terminal and a second base station after switching is realized, and the second base station can accurately decompress uplink compressed data sent by the terminal after the terminal switches to the second base station.

Description

Method and device for maintaining continuity of UDC function

This application claims the priority of the Chinese Patent Application filed on Jan. 25, 2017, filed on Jan. 25, 2017, filed Jan. In this application.

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a method and device for maintaining continuity of a UDC function.

Background technique

In the Long Term Evolution (LTE)/Advanced Long Term Evolution (LTE-A) technology, the terminal can be configured by the base station to enable Uplink Data Compression (UDC) for uplink application layer data or The signaling is compressed and uploaded, and the compressed data is decompressed at the base station side to save the amount of data transmitted by the air interface and save uplink resources.

At present, there are two solutions for maintaining the correct decompression of the terminal and the base station. One is that the terminal and the base station maintain the same compression buffer. The terminal compresses the uplink data according to the compressed buffer data established by the terminal and sends the data to the base station. The base station according to itself The established compressed cache data decompresses the received uplink compressed data of the terminal; the other is that the terminal and the base station download pre-defined or save some compressed cache profile information for compression and decompression, and pass the letter. Let the interaction determine the profile used to compress and decompress the upstream data of the terminal.

In a mobility scenario, the terminal needs to switch from the currently accessed source base station to the target base station. For example, the X2 handover procedure of the LTE system as shown in FIG. The source base station performs a handover decision according to the measurement result of the terminal, selects a suitable target cell, and sends a handover request to the target base station; if the target base station allows the terminal to access, returns a handover request acknowledgement message to the source base station (which carries the transmission generated by the target base station) a handover command of the terminal; the source base station sends a handover command to the terminal; the terminal accesses the target cell after receiving the handover command, and sends a Radio Resource Control (RRC) connection reconfiguration complete message to the target cell; the target base station transmits to the core network The Mobile Management Entity (MME) sends a path switching request, and the MME then sends a user plane path update request to the S-GW. After the S-GW converts the downlink transmission path, it confirms to the MME, and the MME confirms to the target base station. The target base station notifies the source base station to release the resources of the UE. However, since the UDC functions supported by different base stations are different, the protocol version is different. When the terminal is switched from the source base station to the target base station, if the terminal still uses the method of compressing the uplink data when accessing the source base station, the target base station cannot Correctly decompress the uplink compressed data sent by the terminal.

In summary, when the terminal is handed over from the source base station to the target base station, the target base station cannot correctly decompress the uplink compressed data sent by the terminal.

Summary of the invention

The present invention provides a method and a device for maintaining the continuity of the UDC function, which is used to solve the problem that the target base station cannot correctly decompress the uplink compressed data sent by the terminal when the terminal is switched from the source base station to the target base station in the prior art.

Based on the above problem, in a first aspect, an embodiment of the present invention provides a method for maintaining continuity of a UDC function, including:

The first base station sends a handover request message to the second base station, where the handover request message includes uplink data compression UDC related information of the terminal;

Transmitting, by the first base station, the UDC related information of the second base station returned by the second base station to the terminal, so that the terminal adopts the foregoing after switching to the second base station The compression method determined by the UDC related information of the second base station performs data compression processing;

The UDC related information of the second base station is determined according to UDC related information of the terminal.

Optionally, the UDC related information of the terminal is part or all of the following information:

Profile information supported by the terminal;

Profile information currently used by the terminal;

Capability information of the terminal;

The type of compression cache mode currently used by the terminal.

Optionally, the UDC related information of the second base station is part or all of the following information:

Profile information, type of compression cache mode, and indication information using an empty compression cache.

Optionally, if the UDC related information of the second base station is the compression buffer mode number, the first base station according to the received UDC related information of the second base station returned by the second base station, After the terminal sends the UDC configuration information, the terminal further includes:

Transmitting, by the first base station, the compressed buffer data corresponding to the terminal that is stored by the first base station to the second base station, so that the second base station is configured to the terminal according to the compressed cached data. The data is decompressed.

Optionally, if the UDC related information of the second base station is the compression buffer mode number, the first base station sends a handover request message to the second base station, including:

The first base station sends, to the second base station, a handover request message including data of the compressed cache corresponding to the terminal stored by the first base station, so that when the second base station supports the UDC function, according to the The compressed cached data decompresses data of the terminal.

Optionally, after the first base station sends the UDC configuration information to the terminal according to the UDC related information of the second base station that is returned by the second base station, the first base station further includes:

After receiving the release message of the second base station, the first base station releases the compressed cache data corresponding to the terminal.

Optionally, after the first base station sends the handover request message to the second base station, before the sending, by the second base station, the UDC related information of the second base station that is sent by the second base station to the terminal, the method further includes:

Determining, by the first base station, that the interface parameter in the handover confirmation message sent by the second base station has UDC related information of the second base station; or

The first base station determines that the radio resource control RRC reconfiguration message in the handover confirmation message sent by the second base station has UDC related information.

Optionally, the first base station sends the received UDC related information of the second base station that is returned by the second base station to the terminal, where

The first base station sends an RRC reconfiguration message in the handover confirmation message to the terminal, where the RRC reconfiguration message has UDC related information of the second base station.

Optionally, the method further includes:

If the first base station determines that the interface parameters and the handover confirmation message in the handover confirmation message do not have the UDC related information of the second base station, the first base station sends an RRC reconfiguration message in the handover confirmation message. Sending to the terminal, so that when determining that the received UD reconfiguration message does not include the UDC configuration information, the terminal determines to stop using the UDC function after switching to the second base station; or

If the first base station determines that the interface parameters and the handover confirmation message in the handover confirmation message do not have the UDC related information of the second base station, the first base station sends an RRC reconfiguration message in the handover confirmation message. Modifying, indicating that the terminal stops using the UDC function after switching to the second base station by using the modified RRC reconfiguration message.

In a second aspect, a method for maintaining continuity of a UDC function according to an embodiment of the present invention includes:

The second base station receives the handover request message sent by the first base station, and determines the UDC related information of the second base station according to the UDC related information of the terminal in the handover request message;

Transmitting, by the second base station, UDC related information of the second base station to the first base station, so that the first base station sends UDC related information of the second base station to the terminal, so that the terminal After the handover to the second base station, the data compression processing is performed by using a compression manner determined by the UDC related information of the second base station.

Optionally, the determining, by the second base station, the UDC related information of the second base station according to the UDC related information of the terminal in the handover request message, including:

If the UDC related information of the terminal is the profile information supported by the terminal, the second base station selects the terminal and the second according to the profile information supported by the terminal and the profile information supported by the second base station. a profile supported by the base station, using profile information supported by the terminal and the second base station as UDC related information of the second base station; or

If the UDC-related information of the terminal is the profile information currently used by the terminal, when the second base station determines to support the profile currently used by the terminal, the profile information currently used by the terminal is used as the second base station. UDC related information; or

If the UDC-related information of the terminal is the type of the compression buffer mode currently used by the terminal, when the second base station determines to support the currently used compression cache mode, the second base station uses the compression cache mode currently used by the terminal. Type as UDC related information of the second base station; or

If the UDC related information of the terminal is the capability information of the terminal, the second base station determines the UDC related information of the second base station according to the capability information of the terminal and the capability information of the second base station.

Optionally, the sending, by the second base station, the UDC related information of the second base station to the first base station includes:

The second base station sends the UDC related information of the second base station to the first base station by adding an interface parameter and an RRC reconfiguration message in the handover confirmation message; or

The second base station adds the UDC related information of the second base station to an RRC reconfiguration message and sends the information to the first base station.

Optionally, after the sending, by the second base station, the UDC related information of the second base station to the first base station, the method further includes:

After receiving the RRC reconfiguration complete message of the terminal, the second base station sends a release message to the first base station, so that after receiving the release message, the first base station releases the corresponding terminal. Compress the data in the cache.

In a third aspect, a method for maintaining continuity of a UDC function according to an embodiment of the present invention includes:

The terminal receives the UDC related information of the second base station that is sent by the first base station, where the UDC related information of the second base station is determined by the second base station according to the UDC related information of the terminal, and is sent to the Said first base station;

The terminal determines, according to the UDC related information of the second base station, a compression mode adopted after switching to the second base station, and performs compression processing on the data according to the compression mode.

Optionally, the terminal determines, according to the UDC related information of the second base station, a compression manner that is adopted after the handover to the second base station, and includes:

If the UDC related information of the second base station is profile information, the terminal determines to perform data compression processing by using a profile corresponding to the profile information after switching to the second base station; or

If the UDC-related information of the second base station is of a compression buffering type, the terminal determines to perform data compression processing by using a compression buffer corresponding to the type of the compression buffering mode after switching to the second base station; or

If the UDC related information of the second base station is indication information that uses an empty compression buffer, the terminal determines to perform data compression processing by using an empty compression buffer after switching to the second base station.

Optionally, the receiving, by the terminal, the UDC related information of the second base station sent by the first base station, including:

The terminal receives an RRC reconfiguration message including UDC related information of the second base station.

Optionally, the method further includes:

The UDC-related information of the second base station is not included in the RRC reconfiguration message received by the terminal, and determining to stop using the UDC function after switching to the second base station; or

The RRC reconfiguration message received by the terminal includes information indicating that the terminal stops using the UDC function after switching to the second base station, and determines to stop using the UDC function after switching to the second base station.

In a fourth aspect, a method for maintaining continuity of a UDC function according to an embodiment of the present invention includes:

After the terminal is handed over to the second base station, the second base station determines the UDC related information of the second base station according to the capability information of the terminal and the capability information of the second base station;

The second base station sends the UDC related information of the second base station to the terminal, so that the terminal performs data compression processing by using a compression manner determined by UDC related information of the second base station.

Optionally, the second base station acquires capability information of the terminal according to part or all of the following manners:

The second base station acquires capability information of the terminal from the received RRC reconfiguration complete message sent by the terminal;

Receiving, by the second base station, capability information of the terminal reported by the terminal;

The second base station acquires capability information of the terminal from the mobility management entity MME.

Profile information, instructions for using the compression cache method.

Optionally, the sending, by the second base station, the UDC related information of the second base station to the terminal includes:

The second base station sends an RRC reconfiguration message to the terminal, where the RRC reconfiguration message has UDC related information of the second base station.

In a fifth aspect, a method for maintaining continuity of a UDC function according to an embodiment of the present invention includes:

After receiving the second base station, the terminal receives the UDC related information of the second base station that is sent by the second base station, where the UDC related information of the second base station is based on the capability of the second base station according to the terminal Information and capability information of the second base station are determined;

The terminal determines a compression mode according to the UDC related information of the second base station, and performs compression processing on the data according to the compression manner.

Optionally, before the terminal receives the UDC related information of the second base station sent by the second base station, the method further includes:

The terminal reports the capability information of the terminal to the second base station by using an RRC reconfiguration complete message; or

After the terminal is switched, the terminal reports the capability information of the terminal to the second base station.

Optionally, the terminal determines, according to the UDC related information of the second base station, a compression manner, including:

If the UDC related information of the second base station is indication information using a compression buffering manner, the terminal determines to perform data compression processing by using a compression buffer after switching to the second base station.

Optionally, the receiving, by the terminal, the UDC related information of the second base station sent by the second base station, including:

In a sixth aspect, the first base station of the embodiment of the present invention includes:

a first sending module, configured to send a handover request message to the second base station, where the handover request message includes uplink data compression UDC related information of the terminal;

a first receiving module, configured to send the received UDC related information of the second base station returned by the second base station to the terminal, so that the terminal adopts a location after switching to the second base station The compression mode determined by the UDC related information of the second base station performs data compression processing; wherein the UDC related information of the second base station is determined according to UDC related information of the terminal.

Profile information supported by the terminal;

Profile information currently used by the terminal;

Capability information of the terminal;

The type of compression cache mode currently used by the terminal.

Optionally, the first sending module is further configured to:

And if the UDC related information of the second base station is the compression buffer mode number, after sending the UDC configuration information to the terminal according to the received UDC related information of the second base station returned by the second base station, The data of the compressed cache corresponding to the terminal stored by the first base station is forwarded to the second base station, so that the second base station decompresses data of the terminal according to the compressed cached data.

Optionally, the first sending module is specifically configured to:

And if the UDC related information of the second base station is the compression buffer mode number, sending, to the second base station, a handover request message including data of the compressed cache corresponding to the terminal stored by the first base station, so that When the second base station supports the UDC function, the data of the terminal is decompressed according to the data of the compressed cache.

Optionally, the first sending module is further configured to:

After transmitting the UDC configuration information to the terminal according to the UDC related information of the second base station that is returned by the second base station, after receiving the release message of the second base station, releasing the corresponding Compress the cached data.

Optionally, the first sending module is further configured to:

After transmitting the handover request message to the second base station, before transmitting the received UDC related information of the second base station returned by the second base station to the terminal, determining, in the handover confirmation message sent by the second base station, The UDC related information of the second base station is included in the interface parameter; or

Determining that the radio resource control RRC reconfiguration message in the handover confirmation message sent by the second base station has UDC related information.

Optionally, the first sending module is specifically configured to:

Sending, to the terminal, the RRC reconfiguration message in the handover confirmation message, where the RRC reconfiguration message has UDC related information of the second base station.

Optionally, the first sending module is further configured to:

If it is determined that the interface parameter and the handover confirmation message in the handover confirmation message do not have the UDC related information of the second base station, send an RRC reconfiguration message in the handover confirmation message to the terminal, so that the When determining that the received UDC configuration information is not included in the received RRC reconfiguration message, the terminal determines to stop using the UDC function after switching to the second base station; or

If it is determined that the interface parameter and the handover confirmation message in the handover confirmation message do not have the UDC related information of the second base station, modify the RRC reconfiguration message in the handover confirmation message, and modify the RRC reconfiguration. The message indicates that the terminal stops using the UDC function after switching to the second base station.

In a seventh aspect, the first type of the second base station of the embodiment of the present invention includes:

a second receiving module, configured to receive a handover request message sent by the first base station, and determine UDC related information of the second base station according to the UDC related information of the terminal in the handover request message;

a second sending module, configured to send the UDC related information of the second base station to the first base station, so that the first base station sends the UDC related information of the second base station to the terminal, so that After the terminal is switched to the second base station, the terminal performs data compression processing by using a compression manner determined by the UDC related information of the second base station.

Optionally, the second receiving module is specifically configured to:

If the UDC related information of the terminal is the profile information supported by the terminal, the profile supported by the terminal and the second base station is selected according to the profile information supported by the terminal and the profile information supported by the second base station. And using the profile information supported by the terminal and the second base station as the UDC related information of the second base station; or

If the UDC-related information of the terminal is the profile information currently used by the terminal, when the profile that is currently used by the terminal is determined, the profile information currently used by the terminal is used as the UDC-related information of the second base station; or

If the UDC-related information of the terminal is the type of the compression cache mode currently used by the terminal, when determining the support of the currently used compression cache mode, the type of the compression cache mode currently used by the terminal is used as the UDC related information of the two base stations; or

And determining the UDC related information of the second base station according to the capability information of the terminal and the capability information of the second base station, if the UDC related information of the terminal is the capability information of the terminal.

Optionally, the second sending module is specifically configured to:

Adding the UDC related information of the second base station to the first base station by adding an interface parameter and an RRC reconfiguration message in the handover confirmation message; or

The UDC related information of the second base station is added to the RRC reconfiguration message and sent to the first base station.

Optionally, the second sending module is further configured to:

After transmitting the UDC related information of the second base station to the first base station, after receiving the RRC reconfiguration complete message of the terminal, sending a release message to the first base station, so that the first base station is in the After receiving the release message, the data in the compression cache corresponding to the terminal is released.

In an eighth aspect, the first terminal of the embodiment of the present invention includes:

a third receiving module, configured to receive UDC related information of the second base station that is sent by the first base station, where the UDC related information of the second base station is the UDC related information of the second base station according to the terminal Determining and transmitting to the first base station;

The first determining module is configured to determine, according to the UDC related information of the second base station, a compression manner adopted after switching to the second base station, and perform compression processing on the data according to the compression manner.

Optionally, the first determining module is specifically configured to:

If the UDC related information of the second base station is profile information, determining to perform data compression processing by using a profile corresponding to the profile information after switching to the second base station; or

If the UDC-related information of the second base station is of a compression buffer type, determining to perform data compression processing by using a compression buffer corresponding to the type of the compression buffer mode after switching to the second base station; or

If the UDC related information of the second base station is the indication information that uses the empty compression buffer, it is determined that the data compression processing is performed by using an empty compression buffer after switching to the second base station.

Optionally, the third receiving module is specifically configured to:

Receiving an RRC reconfiguration message including UDC related information of the second base station.

Optionally, the third receiving module is further configured to:

Receiving, in the RRC reconfiguration message, the UDC related information of the second base station, determining to stop using the UDC function after switching to the second base station; or

The received RRC reconfiguration message includes information indicating that the terminal stops using the UDC function after switching to the second base station, and determines to stop using the UDC function after switching to the second base station.

A ninth aspect, the second second base station of the embodiment of the present invention includes:

a second determining module, configured to determine UDC related information of the second base station according to capability information of the terminal and capability information of the second base station after the terminal is handed over to the second base station;

And a third sending module, configured to send the UDC related information of the second base station to the terminal, so that the terminal performs data compression processing by using a compression manner determined by UDC related information of the second base station.

Optionally, the second determining module is specifically configured to:

The capability information of the terminal is obtained according to part or all of the following manners:

Obtaining capability information of the terminal from the received RRC reconfiguration complete message sent by the terminal;

Receiving capability information of the terminal reported by the terminal;

Obtaining capability information of the terminal from the mobility management entity MME.

Profile information, instructions for using the compressed cache method.

Optionally, the third sending module is specifically configured to:

And sending, to the terminal, an RRC reconfiguration message, where the RRC reconfiguration message has UDC related information of the second base station.

A tenth aspect, the second terminal of the embodiment of the present invention includes:

a fourth receiving module, configured to receive UDC related information of the second base station sent by the second base station after switching to the second base station, where the UDC related information of the second base station is the second base station Determining according to the capability information of the terminal and the capability information of the second base station;

And a third determining module, configured to determine a compression mode according to the UDC related information of the second base station, and perform compression processing on the data according to the compression manner.

Optionally, the fourth receiving module is further configured to:

Receiving the capability information of the terminal to the second base station by using an RRC reconfiguration complete message before receiving the UDC related information of the second base station that is sent by the second base station; or

After the handover, the capability information of the terminal is reported to the second base station.

Optionally, the third determining module is specifically configured to:

If the UDC related information of the second base station is the indication information that uses the compression buffering mode, it is determined that the data compression processing is performed by using a compression buffer after switching to the second base station.

Optionally, the fourth receiving module is specifically configured to:

In the embodiment of the present invention, when the terminal is handed over from the first base station to the second base station, the first base station sends the UDC related information of the terminal to the second base station, and the second base station generates the UDC related information of the second base station according to the UDC related information of the terminal, And transmitting, by the first base station, the terminal, after the terminal is switched to the second base station, compressing the uplink data by using a compression manner corresponding to the UDC related information of the second base station, thereby implementing compression of the terminal and the second base station after the handover. After the mode is negotiated, after the terminal switches to the second base station, the second base station can accurately decompress the uplink compressed data sent by the terminal.

DRAWINGS

1 is a schematic diagram of an X2 handover process of an LTE system in the background art;

2 is a schematic structural diagram of a system for maintaining continuity of a UDC function according to an embodiment of the present invention;

3 is a schematic flowchart of a method for determining a compression mode after a handover when a terminal currently uses a profile mode according to Embodiment 1 of the present invention;

4 is a schematic flowchart of a method for determining a compression mode after a handover when a terminal currently uses a profile mode according to Embodiment 2 of the present invention;

FIG. 5 is a schematic flowchart of a method for determining a compression mode after a handover when a terminal currently uses a compression buffer mode according to Embodiment 3 of the present invention;

6 is a schematic flowchart of a method for determining a compression mode after a handover when a terminal currently uses a compression buffer mode according to Embodiment 4 of the present invention;

7 is a schematic flowchart of a method for determining a compression mode after a handover when a second base station does not support a UDC function according to Embodiment 5 of the present invention;

FIG. 8 is a schematic flowchart of a method for determining a post-switching compression mode when a second base station does not support a UDC function according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a second system for maintaining continuity of a UDC function according to an embodiment of the present invention; FIG.

10 is a schematic flowchart of a method for determining a compression mode after a handover when a UDC function is enabled after a terminal accesses a second base station according to Embodiment 7 of the present invention;

11 is a schematic flowchart of a method for determining a compression mode after a handover when a UDC function is enabled after a terminal accesses a second base station according to Embodiment 8 of the present invention;

12 is a schematic structural diagram of a first first base station according to an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a first second base station according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of a first terminal according to an embodiment of the present invention; FIG.

15 is a schematic structural diagram of a second second base station according to an embodiment of the present invention;

16 is a schematic structural diagram of a second terminal according to an embodiment of the present invention;

FIG. 17 is a schematic structural diagram of a second first base station according to an embodiment of the present invention;

18 is a schematic structural diagram of a third second base station according to an embodiment of the present invention;

19 is a schematic structural diagram of a third terminal according to an embodiment of the present invention;

20 is a schematic structural diagram of a fourth second base station according to an embodiment of the present invention;

21 is a schematic structural diagram of a fourth terminal according to an embodiment of the present invention;

22 is a schematic flowchart of a method for maintaining continuity of a UDC function by a first base station auxiliary terminal according to an embodiment of the present invention;

FIG. 23 is a schematic flowchart of a method for maintaining continuity of a UDC function by a second base station auxiliary terminal according to an embodiment of the present invention;

24 is a schematic flowchart of a method for maintaining continuity of a UDC function by a terminal according to an embodiment of the present invention;

25 is a schematic flowchart of a method for maintaining continuity of a UDC function by a second base station auxiliary terminal according to an embodiment of the present invention;

FIG. 26 is a schematic flowchart of a method for maintaining continuity of a UDC function of a second terminal according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be understood that the technical solution of the present invention can be applied to various communication systems, for example, a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a wideband code division. Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) System, Universal Mobile Telecommunication System (UMTS), etc.

It should be understood that, in the embodiment of the present invention, the user equipment (User Equipment, UE) includes but is not limited to a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), a mobile phone (Mobile Telephone), a mobile phone (handset). And portable devices, etc., the user equipment can communicate with one or more core networks via a Radio Access Network (RAN), for example, the user equipment can be a mobile phone (or "cellular" The telephone device, the computer with wireless communication function, etc., the user equipment can also be a mobile device that is portable, pocket-sized, handheld, built-in, or in-vehicle.

In an embodiment of the invention, a base station (e.g., an access point) may refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface. The base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), the invention is not limited.

The first base station in the embodiment of the present invention sends a handover request message to the second base station, where the handover request message includes UDC related information of the terminal, and the first base station returns the received return by the second base station. The UDC related information of the second base station is sent to the terminal, so that the terminal performs data compression processing by using a compression manner determined by the UDC related information of the second base station after switching to the second base station; The UDC related information of the second base station is generated according to the UDC related information of the terminal. When the terminal is handed over to the second base station by the first base station, the first base station sends the UDC related information of the terminal to the second base station, and the second base station generates the UDC related information of the second base station according to the UDC related information of the terminal. And transmitting, by the first base station, the terminal, after the terminal is switched to the second base station, compressing the uplink data by using a compression manner corresponding to the UDC related information of the second base station, thereby implementing the terminal and the second base station after the handover. In the compression mode negotiation, after the terminal switches to the second base station, the second base station can accurately decompress the uplink compressed data sent by the terminal.

The present invention will be further described in detail with reference to the accompanying drawings, in which FIG. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

As shown in FIG. 2, the first system for maintaining UDC functional continuity in the embodiment of the present invention includes: a first base station 10, a second base station 20, and a terminal 30.

The first base station 10 is configured to send a handover request message to the second base station, where the handover request message includes uplink data compression UDC related information of the terminal, and the received second base station returned by the second base station The UDC related information is sent to the terminal, so that the terminal performs data compression processing by using a compression manner determined by UDC related information of the second base station after switching to the second base station;

The second base station 20 is configured to receive a handover request message sent by the first base station, determine UDC related information of the second base station according to UDC related information of the terminal in the handover request message, and use a UDC of the second base station. Sending related information to the first base station, so that the first base station sends UDC related information of the second base station to the terminal, so that the terminal adopts the following after switching to the second base station The compression method determined by the UDC related information of the second base station performs data compression processing;

The terminal 30 is configured to receive UDC related information of the second base station that is sent by the first base station, and determine, according to the UDC related information of the second base station, a compression mode that is adopted after switching to the second base station, and Compressing data according to the compression method;

The UDC related information of the second base station is determined by the second base station according to the UDC related information of the terminal, and is sent to the first base station.

a profile profile supported by the terminal;

The profile currently used by the terminal;

Capability information of the terminal;

The compression cache mode currently used by the terminal.

It should be noted that, when the first base station selects different information as the UDC related information of the terminal, the UDC related information of the second base station determined by the second base station is also different, and the second base station specifically describes the UDC related information according to the terminal. A method of determining UDC related information of a second base station.

The profile information is identifier information that can be used to represent the profile; for example, it may be a number corresponding to the profile or an index of the profile.

1. The UDC related information of the terminal is a profile supported by the terminal.

The first base station sends all the profile information supported by the terminal to the second base station;

The second base station selects a profile supported by the terminal and the second base station according to the profile information supported by the terminal and the profile information supported by the second base station, and supports both the terminal and the second base station. The profile information is used as UDC related information of the second base station.

If the terminal and the second base station support multiple profiles, the second base station selects one profile information from the multiple profiles as the UDC related information of the second base station.

For example, the profiles supported by the terminal are numbered 1, 6, and 7. The profiles supported by the second base station are 1, 2, 3, 4, 5, and 6; and the profiles supported by the second base station and the second base station are supported. In the numbers 1, 6, a profile number is selected as the UDC related information of the second base station.

2. The UDC related information of the terminal is the profile currently used by the terminal.

The first base station sends the profile information currently used by the terminal to the second base station;

When determining, by the second base station, the profile currently used by the terminal, the profile information currently used by the terminal is used as the UDC related information of the second base station.

For example, the compression mode currently used by the terminal is the profile mode, and the profile number is 1. After the first base station sends the profile number 1 to the second base station, if the second base station supports the profile numbered 1, the second base station The profile number 1 is used as the UDC related information of the second base station.

It should be noted that, if the second base station determines that the profile currently used by the terminal is not supported, the second base station does not return the UDC related information of the second base station to the first base station; or the second base station returns to the first base station to stop the UDC. Functional information so that the terminal stops using the UDC function after switching to the second base station.

3. The UDC related information of the terminal is the type of the compression buffer mode currently used by the terminal.

The first base station sends the type of the compression buffer mode currently used by the terminal to the second base station;

When determining, by the second base station, that the currently used compression buffer mode is supported, the type of the compression buffer mode currently used by the terminal is used as the UDC related information of the second base station.

Specifically, after receiving the type of the compression buffer mode currently used by the terminal sent by the first base station, the second base station determines that the terminal currently uses the compression buffer to perform uplink data compression, and further determines according to the type of the compressed buffer mode received. The way the compressed cache is used by the terminal.

4. The UDC related information of the terminal is the capability information of the terminal.

The capability information of the terminal includes but is not limited to:

All profile information supported by the terminal and the type of all compression cache modes supported by the terminal.

Specifically, all the profile information supported by the terminal and the type of all the compression buffer modes supported by the terminal are used as the UDC related information of the terminal, and are sent to the second base station.

The second base station determines UDC related information of the second base station according to the capability information of the terminal and the capability information of the second base station.

The capability information of the second base station includes but is not limited to:

All profile information supported by the second base station and all types of compression buffer modes supported by the second base station.

Specifically, the second base station selects a profile or a compressed cache mode supported by the second base station from all the profile information supported by the terminal and all types of compression buffer modes supported by the terminal.

For example, the number of profiles supported by the terminal is 1, 6, and 7. The number of supported compression buffers is A and D. The number of profiles supported by the second base station is 1, 2, 3, 4, 5, and 6. Supported The types of the compression buffering modes are A, B, C, E, F, and H; the number of the profile supported by the second base station and the second base station, number 1, 6, and the compression buffer mode supported by both the terminal and the second base station. In type A, a UDC-related information is selected as the second base station, which may be a profile or a compressed cache.

After the second base station determines the UDC related information of the second base station, the second base station sends the UDC related information of the second base station to the first base station.

Optionally, the second base station adds the UDC related information of the second base station to the first base station by adding the handover confirmation message.

Specifically, the following two methods can be used:

The first base station sends the UDC related information of the second base station to the first base station in the interface parameter and the RRC reconfiguration message in the handover confirmation message;

For the mode 1, after receiving the handover confirmation message, the first base station determines whether the interface parameter in the handover confirmation message includes the UDC related information of the second base station.

Specifically, the following two cases are included:

The first base station determines that the interface parameter in the handover confirmation message sent by the second base station has the UDC related information of the second base station, determines that the second base station supports the UDC function, and determines the indication by the second base station. The compression method that needs to be used after the terminal is switched.

And the first base station sends an RRC reconfiguration message in the handover confirmation message to the terminal, where the RRC reconfiguration message has UDC related information of the second base station.

Correspondingly, the terminal receives an RRC reconfiguration message including UDC related information of the second base station.

2. If the interface parameter in the handover confirmation message of the first base station does not have the UDC related information of the second base station, the first base station sends an RRC reconfiguration message in the handover confirmation message to the terminal, so that When determining that the received UD reconfiguration message does not include the UDC configuration information, the terminal determines to stop using the UDC function after switching to the second base station;

Or, if the first base station determines that the interface parameter and the handover confirmation message in the handover confirmation message do not have the UDC related information of the second base station, the first base station sends an RRC reconfiguration message in the handover confirmation message. And sending, to the terminal, the terminal, when determining that the received UD reconfiguration message does not include the UDC configuration information, determining to stop using the UDC function after switching to the second base station.

Correspondingly, the RRC reconfiguration message received by the terminal does not have the UDC related information of the second base station, and determines to stop using the UDC function after switching to the second base station.

The second base station adds the UDC related information of the second base station to the first base station by adding the UDC related information of the second base station.

After receiving the handover confirmation message, the first base station parses the RRC reconfiguration message in the handover confirmation message, and determines whether the RRC reconfiguration message in the handover confirmation message includes the UDC related information of the second base station;

Specifically, the following two cases are included:

The first base station determines that the RRC reconfiguration message in the handover confirmation message sent by the second base station has the UDC related information of the second base station, determines that the second base station supports the UDC function, and determines the second base station. Indicates the compression method that needs to be used after the terminal is switched.

2. If the first base station does not have the UDC related information of the second base station in the RRC reconfiguration message in the handover confirmation message, the first base station modifies the RRC reconfiguration message in the handover confirmation message, and modifies The subsequent RRC reconfiguration message indicates that the terminal stops using the UDC function after switching to the second base station.

Or, if the first base station determines that the interface parameter and the handover confirmation message in the handover confirmation message do not have the UDC related information of the second base station, the first base station sends an RRC reconfiguration message in the handover confirmation message. Modifying, indicating that the terminal stops using the UDC function after switching to the second base station by using the modified RRC reconfiguration message.

Specifically, when the first base station modifies the RRC reconfiguration message in the handover confirmation message, the parameter in the RRC reconfiguration message needs to be modified, for example, the indication to stop the UDC, and the available forms include: disable UDC, release UDC.

Correspondingly, the RRC reconfiguration message received by the terminal includes information indicating that the terminal stops using the UDC function after switching to the second base station, and determines to stop using the UDC after switching to the second base station. Features.

It should be noted that the UDC function of the terminal can be implemented in two ways, one is a profile mode, and the other is a compression cache mode.

When the profile is adopted, the terminal and the base station are required to download the same profile from a public server, and the profile information used by the terminal and the base station to perform interaction is determined, so that the terminal and the base station can use the same profile. Perform data compression and decompression. The profile information includes a compression method, decompressed buffer information, and a decompressed mapping table.

When the compression buffer is used, the terminal and the base station need to maintain the same compression buffer; the terminal compresses the uplink data according to the compressed buffer data, and after the terminal sends the compressed uplink data to the base station, the base station compresses the cache according to its own storage. Decompress the data of the terminal.

If the second base station determines that the terminal is switched to the second base station, the uplink data is compressed by using a compressed buffer; that is, the UDC related information of the second base station sent by the second base station to the first base station is a type or a compressed cache mode. An empty compression cache indication.

When the UDC-related information of the second base station is of a compression buffer type, the first base station needs to forward the compressed cache data corresponding to the terminal stored by the second base station to the second, because the second base station does not have the compressed cache data corresponding to the terminal. The base station can be forwarded in the following two ways:

Mode 1, after the first base station sends the UDC configuration information to the terminal according to the received UDC related information of the second base station returned by the second base station, the first base station stores the first base station The data of the compressed cache corresponding to the terminal is forwarded to the second base station, so that the second base station decompresses the data of the terminal according to the data of the compressed cache.

In a second mode, the first base station sends, to the second base station, a handover request message that includes the compressed cache data corresponding to the terminal stored by the first base station, so that the second base station supports the UDC function. Decompressing data of the terminal according to the compressed cached data.

That is, when the first base station sends the handover request message to the second base station, the first base station transmits the compressed buffer data corresponding to the terminal stored by the first base station to the second base station.

It is to be noted that, after receiving the compressed buffer data corresponding to the terminal sent by the first base station, the second base station returns a reception completion message to the first base station; after receiving the reception completion message returned by the second base station, the first base station And determining that the data transmission of the compression buffer corresponding to the terminal is completed.

After receiving the RRC reconfiguration message including the UDC related information of the second base station, determining, according to the UDC related information of the second base station in the RRC reconfiguration message, determining to adopt after switching to the second base station, Compression method, and compressing the data according to the compression method.

Different compression methods for performing data compression processing are determined according to different UDC related information of the second base station. The details are described below.

1. The UDC related information of the second base station is profile information.

The terminal determines to perform data compression processing by using a profile corresponding to the profile information after switching to the second base station.

2. The UDC related information of the second base station is of a compression buffer type.

The terminal determines to perform data compression processing by using a compression buffer corresponding to the type of the compression buffer mode after switching to the second base station.

3. The UDC related information of the second base station is indication information that uses an empty compression buffer.

The terminal determines to perform data compression processing by using an empty compression buffer after switching to the second base station.

It should be noted that, when the UDC related information of the second base station is the indication information that uses the empty compression buffer, the first base station does not need to forward the compressed buffer data corresponding to the terminal to the second base station, and the first base station may The corresponding compressed cache data is emptied.

If the first base station sends the data of the compressed buffer corresponding to the terminal to the second base station in the handover request message, when the second base station determines that the UDC related information of the second base station is the indication information that uses the empty compression buffer, the second base station does not The data of the compressed cache corresponding to the terminal is used to decompress the data, and the second base station can clear the compressed cache data corresponding to the received terminal.

After receiving the RRC reconfiguration message, the terminal performs configuration according to the RRC reconfiguration message, accesses the second base station after the configuration is complete, and sends an RRC reconfiguration complete message to the second base station.

The method of the present invention for maintaining the continuity of the UDC function will now be described in several specific embodiments.

Embodiment 1

The method of compressing data currently used by the terminal is a profile mode, and the UDC-related information of the terminal included in the handover request message sent by the first base station to the second base station is the number of the profile currently used by the terminal, and the second base station supports the UDC function.

As shown in FIG. 3, the method for maintaining the continuity of the UDC function in the embodiment of the present invention includes:

Step 301: The terminal sends the compressed uplink data to the first base station.

Step 302: The terminal performs measurement reporting.

Step 303: The first base station determines, according to the measurement information reported by the terminal, that the terminal needs to perform handover.

Step 304: The first base station sends a handover request message to the second base station, where the handover request message includes a number of a profile currently used by the terminal.

Step 305: The second base station determines, according to the number of the profile currently used by the terminal, that the UDC related information of the second base station is a profile number, where the profile number is a number of a profile currently used by the terminal.

Step 306: The second base station sends a handover confirmation message to the first base station, where the interface parameter and the RRC reconfiguration message in the handover confirmation message both include the profile number.

Step 307: After receiving the handover confirmation message, the first base station determines that the second base station supports the UDC function.

Step 308: The first base station sends an RRC reconfiguration message to the terminal.

Step 309: The terminal synchronizes to a new cell.

Step 310: The terminal sends an RRC reconfiguration complete message to the second base station.

Step 311: The terminal sends, to the second base station, uplink data that is compressed by using a profile method corresponding to the profile number.

Embodiment 2

The method of compressing data currently used by the terminal is a profile mode, and the UDC related information of the terminal included in the handover request message sent by the first base station to the second base station is a profile supported by the terminal, and the second base station supports the UDC function.

As shown in FIG. 4, the method for maintaining the continuity of the UDC function in the embodiment of the present invention includes:

Step 401: The terminal sends the compressed uplink data to the first base station.

Step 402: The terminal performs measurement reporting.

Step 403: The first base station determines, according to the measurement information reported by the terminal, that the terminal needs to perform handover.

Step 404: The first base station sends a handover request message to the second base station, where the handover request message includes a profile supported by the terminal.

Step 405: The second base station determines, according to the profile supported by the terminal and the profile supported by the second base station, that the UDC related information of the second base station is a profile number, where the profile number is a number of a profile supported by the terminal and the second base station.

Step 406: The second base station sends a handover confirmation message to the first base station, where the interface parameter and the RRC reconfiguration message in the handover confirmation message both include the profile number.

Step 407: After receiving the handover confirmation message, the first base station determines that the second base station supports the UDC function.

Step 408: The first base station sends an RRC reconfiguration message to the terminal.

Step 409: The terminal synchronizes to a new cell.

Step 410: The terminal sends an RRC reconfiguration complete message to the second base station.

Step 411: The terminal sends, to the second base station, uplink data that is compressed by using a profile method corresponding to the profile number.

Embodiment 3

The manner of compressing the data currently used by the terminal is a mode of compressing the buffer, and the UDC-related information of the terminal included in the handover request message sent by the first base station to the second base station is the number of the compression buffer mode currently used by the terminal, and the second base station supports UDC function.

As shown in FIG. 5, the method for maintaining the continuity of the UDC function in the embodiment of the present invention includes:

Step 501: The terminal sends the compressed uplink data to the first base station.

Step 502: The terminal performs measurement reporting.

Step 503: The first base station determines, according to the measurement information reported by the terminal, that the terminal needs to perform handover.

Step 504: The first base station sends a handover request message to the second base station, where the handover request message includes a number of a compression buffer mode currently used by the terminal.

Step 505: The second base station determines, according to the number of the compression buffer mode currently used by the terminal, that the UDC related information of the second base station is a compression buffer mode number, where the compression cache mode number is a number of the compression cache mode currently used by the terminal.

Step 506: The second base station sends a handover confirmation message to the first base station, where the interface parameter and the RRC reconfiguration message in the handover confirmation message both include the number of the compression cache mode.

Step 507: After receiving the handover confirmation message, the first base station determines that the second base station supports the UDC function.

Step 508: The first base station sends an RRC reconfiguration message to the terminal.

Step 509: The first base station forwards the compressed buffer data corresponding to the terminal to the second base station.

Step 510: The terminal synchronizes to a new cell.

Step 511: The terminal sends an RRC reconfiguration complete message to the second base station.

Step 512: The second base station sends a release message to the first base station.

Step 513: The first base station releases data in the compressed cache corresponding to the stored terminal.

Step 514: The terminal sends, to the second base station, uplink data that is compressed by using a compression buffer method corresponding to the number of the compression buffering method.

Embodiment 4

The method of compressing data currently used by the terminal is a mode of compressing the buffer, and the UDC-related information of the terminal included in the handover request message sent by the first base station to the second base station is the capability information of the terminal, and the second base station supports the UDC function.

As shown in FIG. 6, the method for maintaining the continuity of the UDC function in the embodiment of the present invention includes:

Step 601: The terminal sends the compressed uplink data to the first base station.

Step 602: The terminal performs measurement reporting.

Step 603: The first base station determines, according to the measurement information reported by the terminal, that the terminal needs to perform handover.

Step 604: The first base station sends a handover request message to the second base station, where the handover request message includes capability information of the terminal.

Step 605: The second base station determines, according to the capability information of the terminal and the capability information of the second base station, that the UDC related information of the second base station is indication information that uses an empty compression buffer.

Step 606: The second base station sends a handover confirmation message to the first base station, where the interface parameter and the RRC reconfiguration message in the handover confirmation message both include the indication information of the compressed compression cache.

Step 607: After receiving the handover confirmation message, the first base station determines that the second base station supports the UDC function.

Step 608: The first base station sends an RRC reconfiguration message to the terminal.

Step 609: The terminal synchronizes to a new cell.

Step 610: The terminal sends an RRC reconfiguration complete message to the second base station.

Step 611: The second base station sends a release message to the first base station.

Step 612: The first base station releases data in the compressed cache corresponding to the stored terminal.

Step 613: The terminal sends, to the second base station, uplink data that is compressed by using an empty compression buffer.

Embodiment 5

The mode of the compressed data currently used by the terminal is a profile mode, and the UDC related information of the terminal included in the handover request message sent by the first base station to the second base station is a profile supported by the terminal, and the second base station does not support the UDC function;

Moreover, the first base station and the second base station agree that the UDC related information of the second base station is added only in the RRC reconfiguration message of the handover confirmation message.

As shown in FIG. 7, the method for maintaining the continuity of the UDC function in the embodiment of the present invention includes:

Step 701: The terminal sends the compressed uplink data to the first base station.

Step 702: The terminal performs measurement reporting.

Step 703: The first base station determines, according to the measurement information reported by the terminal, that the terminal needs to perform handover.

Step 704: The first base station sends a handover request message to the second base station, where the handover request message includes a profile supported by the terminal.

Step 705: The second base station sends a handover confirmation message to the first base station, where the RRC reconfiguration message in the handover confirmation message does not include the UDC related information of the second base station.

Step 706: After receiving the handover confirmation message, the first base station parses the RRC reconfiguration message in the handover confirmation message, and determines that the RRC reconfiguration message does not include the UDC related information of the second base station; the first base station RRC reconfiguration message to modify;

Step 707: The first base station sends the modified RRC reconfiguration message to the terminal.

Step 708: The terminal determines that the UDC function needs to be stopped after switching to the second base station.

Step 709: The terminal synchronizes to a new cell.

Step 710: The terminal sends an RRC reconfiguration complete message to the second base station.

Step 711: The terminal sends uplink data that is not compressed to the second base station.

Embodiment 6

The method of compressing data currently used by the terminal is a compression buffering mode, and the UDC-related information of the terminal included in the handover request message sent by the first base station to the second base station is the compression buffer mode number currently used by the terminal, and the second base station does not support the UDC. Features;

And, the first base station and the second base station agree to condition the UDC related information of the second base station in the interface parameter of the handover confirmation message.

As shown in FIG. 8, the method for maintaining the continuity of the UDC function in the embodiment of the present invention includes:

Step 801: The terminal sends the compressed uplink data to the first base station.

Step 802: The terminal performs measurement reporting.

Step 803: The first base station determines, according to the measurement information reported by the terminal, that the terminal needs to perform handover.

Step 804: The first base station sends a handover request message to the second base station, where the handover request message includes a compression cache mode number currently used by the terminal.

Step 805: The second base station sends a handover confirmation message to the first base station, where the handover confirmation message does not include the UDC related information of the second base station.

Step 806: After receiving the handover confirmation message, the first base station determines that the interface parameter of the handover confirmation message does not include the UDC related information of the second base station, and determines that the second base station does not support the UDC function.

Step 807: The first base station sends an RRC reconfiguration message to the terminal.

Step 808: The terminal determines that the UDC function needs to be stopped after switching to the second base station.

Step 809: The terminal synchronizes to a new cell.

Step 810: The terminal sends an RRC reconfiguration complete message to the second base station.

Step 811: The terminal sends uplink data that is not compressed to the second base station.

On the other hand, as shown in FIG. 9, the embodiment of the present invention further provides a second system for maintaining continuity of UDC functions, including: a second base station 40 and a terminal 50;

a second base station 40, configured to determine UDC related information of the second base station according to capability information of the terminal and capability information of the second base station after the terminal is handed over to the second base station; and UDC of the second base station Correlating information is sent to the terminal, so that the terminal performs data compression processing by using a compression manner determined by UDC related information of the second base station;

The terminal 50 is configured to: after switching to the second base station, receive UDC related information of the second base station sent by the second base station; determine a compression mode according to the UDC related information of the second base station, and according to the compression Method of compressing data;

The UDC related information of the second base station is determined by the second base station according to capability information of the terminal and capability information of the second base station.

It should be noted that the method for maintaining the continuity of the UDC function in the embodiment of the present invention is applicable to the terminal and the second base station negotiating the compression mode after the terminal switches from the first base station to the second base station. Since the first base station does not support the UDC function, and the second base station and the terminal both support the UDC function, the compression mode is determined after the terminal switches to the second base station.

In the embodiment of the present invention, a profile compression mode is taken as an example, and a method for starting a UDC between a terminal and a base station is first introduced in detail.

Both the terminal and the base station supporting the UDC function have downloaded the profile information, which can be stored on a public server, and the terminal and the base station can download and update themselves.

The base station can broadcast the support of the UE and the supported profile in the broadcast; after receiving the broadcast message of the base station, the terminal reports the supported profile, such as the number of all supported profiles; the network supports the profile supported by the terminal and the profile supported by the terminal. Select a profile supported by both parties, store and instruct the terminal; after receiving the terminal, the terminal can use the corresponding profile for uplink data compression. The network can decompress according to the format of the data packet sent by the terminal and the profile used by the terminal. After decompression, the network can be decompressed. Submit the data to the upper layer.

Similarly, after the terminal accesses the second base station, the terminal receives the broadcast message sent by the second base station, and the terminal reports the capability information to the second base station; the second base station determines the first according to the capability information of the terminal and the capability information of the second base station. UDC related information of the two base stations.

The capability information of the terminal includes but is not limited to:

All profiles supported by the terminal, and all compressed cache modes supported by the terminal.

All profiles supported by the second base station, and all compressed buffers supported by the second base station.

Specifically, the second base station selects a profile or a compressed cache mode that is also supported by the second base station, from all profiles supported by the terminal and all supported compressed cache modes.

For example, the number of profiles supported by the terminal is 1, 6, and 7. The number of supported compression buffers is A and D. The number of profiles supported by the second base station is 1, 2, 3, 4, 5, and 6. Supported The number of the compression buffering method is A, B, C, E, F, and H; the number of the profile supported by the second base station and the second base station, number 1, 6, and the compression buffer mode supported by both the terminal and the second base station. In the number A, a UDC-related information is selected as the second base station, which may be a profile or a compression cache.

The second base station can obtain the capability information of the terminal in the following manner:

The first base station acquires capability information of the terminal that is actively reported by the terminal.

Specifically, the terminal determines, according to the time of receiving the broadcast message of the second base station, a path for actively reporting the capability information of the terminal.

If the terminal receives the broadcast message of the second base station before sending the RRC reconfiguration complete message to the second base station, the terminal reports the capability information of the terminal to the second base station by using the RRC reconfiguration complete message;

After receiving the RRC reconfiguration complete message, the terminal receives the broadcast message of the second base station, and reports the capability information of the terminal to the second base station; where the terminal provides a separate report message to the second base station. Report the capability information of the terminal.

In the second mode, the second base station acquires capability information of the terminal from an MME (Mobility Management Entity).

It should be noted that the method for the second base station to acquire the capability information of the terminal from the MME is a method in the prior art, and details are not described herein again.

After the second base station determines the UDC related information of the second base station, the second base station sends the UDC related information of the second base station to the terminal.

Optionally, the second base station sends UDC related information to the second base station by using an RRC reconfiguration message;

That is, the RRC reconfiguration message has UDC related information of the second base station.

The UDC related information of the second base station is part or all of the following information:

Profile number, instructions for using the compression cache method.

After receiving the UDC related information of the second base station, the terminal may determine the compression mode for performing data compression processing in the following manner:

1. If the UDC related information of the second base station is a profile number, the terminal determines to perform data compression processing by using a profile corresponding to the profile number after switching to the second base station.

2. If the UDC related information of the second base station is indication information using a compression buffering manner, the terminal determines to perform data compression processing by using a compression buffer after switching to the second base station.

The method of maintaining the continuity of the UDC function of the present invention will now be described in two specific embodiments.

Example 7

As shown in FIG. 10, the method for maintaining the continuity of the UDC function in the embodiment of the present invention includes:

Step 1001: The terminal synchronizes to a new cell;

Step 1002: The terminal receives the broadcast message of the second base station, where the broadcast message includes the second base station supporting the UDC function.

Step 1003: The terminal sends an RRC reconfiguration complete message including capability information of the terminal to the second base station.

Step 1004: The second base station determines, according to the capability information of the terminal and the capability information of the second base station, the UDC related information of the second base station.

Step 1005: The second base station sends, to the terminal, an RRC reconfiguration message that includes UDC related information of the second base station.

Step 1006: The terminal determines a compression mode according to the UDC related information of the second base station, and performs compression processing on the data according to the compression mode.

Example eight

As shown in FIG. 11, the method for maintaining the continuity of the UDC function in the embodiment of the present invention includes:

Step 1101: The terminal synchronizes to the new cell.

Step 1102: The terminal sends an RRC reconfiguration complete message to the second base station.

Step 1103: The terminal receives the broadcast message of the second base station, where the broadcast message includes the second base station supporting the UDC function.

Step 1104: The terminal reports the capability information of the terminal to the second base station.

Step 1105: The second base station determines, according to the capability information of the terminal and the capability information of the second base station, the UDC related information of the second base station.

Step 1106: The second base station sends an RRC reconfiguration message including the UDC related information of the second base station to the terminal.

Step 1107: The terminal determines a compression manner according to the UDC related information of the second base station, and performs compression processing on the data according to the compression manner.

As shown in FIG. 12, the first base station in the embodiment of the present invention includes:

The first sending module 1201 is configured to send a handover request message to the second base station, where the handover request message includes uplink data compression UDC related information of the terminal;

The first receiving module 1202 is configured to send the received UDC related information of the second base station returned by the second base station to the terminal, so that the terminal adopts after switching to the second base station The compression mode determined by the UDC related information of the second base station performs data compression processing; wherein the UDC related information of the second base station is determined according to UDC related information of the terminal.

Profile profile information supported by the terminal;

Profile information currently used by the terminal;

Capability information of the terminal;

The type of compression cache mode currently used by the terminal.

Optionally, the first sending module 1201 is further configured to:

If the UDC-related information of the second base station is of the type of the compression buffering mode, after the UDC configuration information is sent to the terminal according to the UDC related information of the second base station that is returned by the second base station, Forwarding, by the first base station, the compressed buffer data corresponding to the terminal to the second base station, so that the second base station decompresses the data of the terminal according to the compressed cached data.

Optionally, the first sending module 1201 is specifically configured to:

If the UDC-related information of the second base station is of a type of the compression buffering mode, send, to the second base station, a handover request message that includes data of a compressed cache corresponding to the terminal stored by the first base station, to When the second base station supports the UDC function, the data of the terminal is decompressed according to the data of the compressed cache.

Optionally, the first sending module 1201 is further configured to:

Optionally, the first sending module 1201 is specifically configured to:

Optionally, the first sending module 1201 is further configured to:

As shown in FIG. 13, the first type of second base station in the embodiment of the present invention includes:

The second receiving module 1301 is configured to receive a handover request message sent by the first base station, and determine UDC related information of the second base station according to the UDC related information of the terminal in the handover request message.

The second sending module 1302 is configured to send the UDC related information of the second base station to the first base station, so that the first base station sends the UDC related information of the second base station to the terminal, so that After the terminal is handed over to the second base station, the terminal performs data compression processing by using a compression manner determined by UDC related information of the second base station.

Optionally, the second receiving module 1301 is specifically configured to:

Optionally, the second sending module 1302 is specifically configured to:

Optionally, the second sending module 1302 is further configured to:

As shown in FIG. 14, the first terminal of the embodiment of the present invention includes:

a third receiving module 1401, configured to receive UDC related information of the second base station that is sent by the first base station, where UDC related information of the second base station is a UDC correlation of the second base station according to the terminal Information is determined and sent to the first base station;

The first determining module 1402 is configured to determine, according to the UDC related information of the second base station, a compression manner adopted after switching to the second base station, and perform compression processing on the data according to the compression manner.

Optionally, the first determining module 1402 is specifically configured to:

Optionally, the third receiving module 1401 is specifically configured to:

Optionally, the third receiving module 1401 is further configured to:

As shown in FIG. 15, a second type of second base station according to an embodiment of the present invention includes:

a second determining module 1501, configured to determine UDC related information of the second base station according to capability information of the terminal and capability information of the second base station after the terminal is handed over to the second base station;

The third sending module 1502 is configured to send the UDC related information of the second base station to the terminal, so that the terminal performs data compression processing by using a compression manner determined by UDC related information of the second base station.

Optionally, the second determining module 1501 is specifically configured to:

Receiving capability information of the terminal reported by the terminal;

Profile information, instructions for using the compression cache method.

Optionally, the third sending module 1502 is specifically configured to:

As shown in FIG. 16, the second terminal of the embodiment of the present invention includes:

The fourth receiving module 1601 is configured to receive, after the handover to the second base station, the UDC related information of the second base station that is sent by the second base station, where the UDC related information of the second base station is the second Determining, by the base station, the capability information of the terminal and the capability information of the second base station;

The third determining module 1602 is configured to determine a compression mode according to the UDC related information of the second base station, and perform compression processing on the data according to the compression manner.

Optionally, the fourth receiving module 1601 is further configured to:

Optionally, the third determining module 1602 is specifically configured to:

Optionally, the fourth receiving module 1601 is specifically configured to:

As shown in FIG. 17, the second first base station in the embodiment of the present invention includes:

The processor 1701 is configured to send and receive data through the transceiver 1702, and read the program in the memory 1704, and perform the following process:

Transmitting, by the transceiver 1702, a handover request message to the second base station, where the handover request message includes uplink data compression UDC related information of the terminal; and the second base station returned by the second base station received by the transceiver 1702 Sending UDC related information of the base station to the terminal, so that the terminal performs data compression processing by using a compression manner determined by UDC related information of the second base station after switching to the second base station; The UDC related information of the two base stations is determined according to the UDC related information of the terminal.

The transceiver 1702 is configured to receive and transmit data under the control of the processor 1701.

Profile profile information supported by the terminal;

Profile information currently used by the terminal;

Capability information of the terminal;

The type of compression cache mode currently used by the terminal.

Optionally, the processor 1701 is further configured to:

If the UDC-related information of the second base station is of the type of the compression buffering mode, according to the received UDC-related information of the second base station returned by the second base station, the UDC is sent to the terminal by the transceiver 1702. After the configuration information, the compressed cached data corresponding to the terminal stored by the first base station is forwarded to the second base station, so that the second base station compares the data of the terminal according to the compressed cached data. Decompress.

Optionally, the processor 1701 is specifically configured to:

If the UDC-related information of the second base station is of the type of the compression buffer mode, the transceiver 1702 transmits, to the second base station, a switch that includes the compressed cache data corresponding to the terminal stored by the first base station. And requesting a message, so that when the second base station supports the UDC function, the data of the terminal is decompressed according to the compressed cached data.

Optionally, the processor 1701 is further configured to:

After receiving the UDC configuration information by the transceiver 1702 to the terminal according to the received UDC related information of the second base station that is returned by the second base station, after receiving the release message of the second base station, releasing the The data of the compressed cache corresponding to the terminal.

Optionally, the processor 1701 is further configured to:

After transmitting the handover request message to the second base station by the transceiver 1702, before transmitting the received UDC related information of the second base station returned by the second base station to the terminal, determining the handover sent by the second base station Having the UDC related information of the second base station in the interface parameter in the confirmation message; or

Optionally, the processor 1701 is specifically configured to:

Optionally, the processor 1701 is further configured to:

In FIG. 17, a bus architecture (represented by bus 1700), which may include any number of interconnected buses and bridges, will include one or more processors represented by processor 1701 and memory represented by memory 1704. The various circuits are linked together. The bus 1700 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 1703 provides an interface between bus 1700 and transceiver 1702. Transceiver 1702 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium. Data processed by processor 1701 is transmitted over a wireless medium via antenna 1705. Further, antenna 1705 also receives data and transmits the data to processor 1701.

The processor 1701 is responsible for managing the bus 1700 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The memory 1704 can be used to store data used by the processor 1701 in performing operations.

Optionally, the processor 1701 may be a CPU (Central Embedded Device), an ASIC (AppL1cation Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). , complex programmable logic devices).

As shown in FIG. 18, a third second base station according to an embodiment of the present invention includes:

The processor 1801 is configured to send and receive data through the transceiver 1802, and read the program in the memory 1804, and perform the following process:

Receiving, by the transceiver 1802, a handover request message sent by the first base station, determining UDC related information of the second base station according to the UDC related information of the terminal in the handover request message; and passing the UDC related information of the second base station Transceiver 1802 is sent to the first base station, so that the first base station sends UDC related information of the second base station to the terminal, so that the terminal adopts the location after switching to the second base station. The compression method determined by the UDC related information of the second base station performs data compression processing.

The transceiver 1802 is configured to receive and transmit data under the control of the processor 1801.

Optionally, the processor 1801 is specifically configured to:

If the UDC-related information of the terminal is the profile information supported by the terminal, the information is selected by the terminal and the second base station according to the profile information supported by the terminal and the profile information supported by the second base station. a profile, the profile information supported by the terminal and the second base station is used as the UDC related information of the second base station; or

Optionally, the processor 1801 is specifically configured to:

Adding the UDC related information of the second base station to the first base station through the transceiver 1802 by adding the interface parameter and the RRC reconfiguration message in the handover confirmation message; or

The UDC related information of the second base station is added to the RRC reconfiguration message and sent to the first base station by the transceiver 1802.

Optionally, the processor 1801 is further configured to:

After transmitting the UDC related information of the second base station to the first base station, after receiving the RRC reconfiguration complete message of the terminal by the transceiver 1802, sending a release message to the first base station, so that the After receiving the release message, the first base station releases data in the compression buffer corresponding to the terminal.

In FIG. 18, a bus architecture (represented by bus 1800), bus 1800 can include any number of interconnected buses and bridges, and bus 1800 will include one or more processors represented by processor 1801 and memory represented by memory 1804. The various circuits are linked together. The bus 1800 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art and, therefore, will not be further described herein. Bus interface 1803 provides an interface between bus 1800 and transceiver 1802. Transceiver 1802 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. The data processed by the processor 1801 is transmitted over the wireless medium via the antenna 1805. Further, the antenna 1805 also receives the data and transmits the data to the processor 1801.

The processor 1801 is responsible for managing the bus 1800 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The memory 1804 can be used to store data used by the processor 1801 in performing operations.

Alternatively, the processor 1801 may be a CPU, an ASIC, an FPGA, or a CPLD.

As shown in FIG. 19, the third terminal of the embodiment of the present invention includes:

The processor 1901 is configured to send and receive data through the transceiver 1902, and read the program in the memory 1904, and perform the following process:

Receiving, by the transceiver 1902, the UDC related information of the second base station that is sent by the first base station, where the UDC related information of the second base station is determined by the second base station according to the UDC related information of the terminal, and Sending to the first base station; determining, according to the UDC related information of the second base station, a compression mode adopted after switching to the second base station, and performing compression processing on the data according to the compression mode.

The transceiver 1902 is configured to receive and transmit data under the control of the processor 1901.

Optionally, the processor 1901 is specifically configured to:

Optionally, the processor 1901 is further configured to:

Determining, by using the UDC related information of the second base station, that the RRC reconfiguration message received by the transceiver 1902 stops using the UDC function after switching to the second base station; or

The RRC reconfiguration message received by the transceiver 1902 includes information indicating that the terminal stops using the UDC function after switching to the second base station, and determines to stop using the UDC function after switching to the second base station.

In FIG. 19, a bus architecture (represented by bus 1900), bus 1900 can include any number of interconnected buses and bridges, and bus 1900 will include one or more processors represented by general purpose processor 1901 and memory 1904. The various circuits of the memory are linked together. The bus 1900 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein. Bus interface 1903 provides an interface between bus 1900 and transceiver 1902. Transceiver 1902 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium. For example, transceiver 1902 receives external data from other devices. The transceiver 1902 is configured to send the processed data of the processor 1901 to other devices. Depending on the nature of the computing system, a user interface 1905 can also be provided, such as a keypad, display, speaker, microphone, joystick.

The processor 1901 is responsible for managing the bus 1900 and the usual processing, running a general purpose operating system as described above. The memory 1904 can be used to store data used by the processor 1901 when performing operations.

Optionally, the processor 1901 may be a CPU, an ASIC, an FPGA, or a CPLD.

As shown in FIG. 20, a fourth second base station according to an embodiment of the present invention includes:

The processor 2001 is configured to send and receive data through the transceiver 2002, and read the program in the memory 2004, and perform the following process:

After the terminal switches to the second base station, determining UDC related information of the second base station according to capability information of the terminal and capability information of the second base station; and UDC related information of the second base station by using the transceiver 2002 And transmitting to the terminal, so that the terminal performs data compression processing by using a compression manner determined by UDC related information of the second base station.

Optionally, the processor 2001 is specifically configured to:

Receiving capability information of the terminal reported by the terminal;

Profile information, instructions for using the compression cache method.

Optionally, the processor 2001 is specifically configured to:

In FIG. 20, a bus architecture (represented by bus 2000), which may include any number of interconnected buses and bridges, will include one or more processors represented by processor 2001 and a memory represented by memory 2004. The various circuits are linked together. The bus 2000 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 2003 provides an interface between bus 2000 and transceiver 2002. The transceiver 2002 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium. The data processed by the processor 2001 is transmitted over the wireless medium via the antenna 2005. Further, the antenna 2005 also receives the data and transmits the data to the processor 2001.

The processor 2001 is responsible for managing the bus 2000 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The memory 2004 can be used to store data used by the processor 2001 when performing operations.

Optionally, the processor 2001 can be a CPU, an ASIC, an FPGA, or a CPLD.

As shown in FIG. 21, a fourth terminal of the embodiment of the present invention includes:

The processor 2101 is configured to send and receive data through the transceiver 2102, and read the program in the memory 2104, and perform the following process:

After the second base station is switched, the UDC-related information of the second base station that is sent by the second base station is received by the transceiver 2102, where the UDC-related information of the second base station is the second base station according to the Determining the capability information of the terminal and the capability information of the second base station; determining a compression mode according to the UDC related information of the second base station, and performing compression processing on the data according to the compression mode.

The transceiver 2102 is configured to receive and transmit data under the control of the processor 2101.

Optionally, the processor 2101 is further configured to:

Optionally, the processor 2101 is specifically configured to:

In FIG. 21, a bus architecture (represented by bus 2100), bus 2100 can include any number of interconnected buses and bridges, and bus 2100 will include one or more processors and memory 2104 represented by general purpose processor 2101. The various circuits of the memory are linked together. The bus 2100 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art and, therefore, will not be further described herein. Bus interface 2103 provides an interface between bus 2100 and transceiver 2102. The transceiver 2102 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium. For example, transceiver 2102 receives external data from other devices. The transceiver 2102 is configured to send the processed data of the processor 2101 to other devices. Depending on the nature of the computing system, a user interface 2105 can also be provided, such as a keypad, display, speaker, microphone, joystick.

The processor 2101 is responsible for managing the bus 2100 and the usual processing, running the general purpose operating system as described above. The memory 2104 can be used to store data used by the processor 2101 in performing operations.

Optionally, the processor 2101 may be a CPU, an ASIC, an FPGA, or a CPLD.

Based on the same inventive concept, the method for maintaining the continuity of the UDC function is also provided in the embodiment of the present invention. The device corresponding to the method is the device in the system that maintains the continuity of the UDC function according to the embodiment of the present invention, and the method solves the problem. The principle of the problem is similar to that of the device, so the implementation of the method can be referred to the implementation of the device, and the details are not repeated here.

As shown in FIG. 22, the method for maintaining the continuity of the UDC function in the embodiment of the present invention includes:

Step 2201: The first base station sends a handover request message to the second base station, where the handover request message includes uplink data compression UDC related information of the terminal.

Step 2202: The first base station sends the received UDC related information of the second base station returned by the second base station to the terminal, so that the terminal adopts after switching to the second base station. The compression mode determined by the UDC related information of the second base station performs data compression processing; wherein the UDC related information of the second base station is determined according to UDC related information of the terminal.

Profile profile information supported by the terminal;

Profile information currently used by the terminal;

Capability information of the terminal;

The type of compression cache mode currently used by the terminal.

Optionally, if the UDC related information of the second base station is of a type of the compression buffer mode, the first base station sends, according to the received UDC related information of the second base station returned by the second base station, After the terminal sends the UDC configuration information, the terminal further includes:

Optionally, if the UDC related information of the second base station is the type of the compression buffering mode, the sending, by the first base station, a handover request message to the second base station, includes:

Optionally, the method further includes:

As shown in FIG. 23, the method for maintaining the continuity of the UDC function in the embodiment of the present invention includes:

Step 2301: The second base station receives the handover request message sent by the first base station, and determines UDC related information of the second base station according to the UDC related information of the terminal in the handover request message.

Step 2302: The second base station sends the UDC related information of the second base station to the first base station, so that the first base station sends the UDC related information of the second base station to the terminal, so that After the terminal is handed over to the second base station, the terminal performs data compression processing by using a compression manner determined by UDC related information of the second base station.

As shown in FIG. 24, the method for maintaining the continuity of the UDC function in the embodiment of the present invention includes:

Step 2401: The terminal receives the UDC related information of the second base station that is sent by the first base station, where the UDC related information of the second base station is determined by the second base station according to the UDC related information of the terminal, and Sent to the first base station;

Step 2402: The terminal determines, according to the UDC related information of the second base station, a compression mode adopted after switching to the second base station, and performs compression processing on the data according to the compression mode.

If the UDC-related information of the second base station is of a compression buffer type, the terminal determines to perform data compression processing by using a compression buffer corresponding to the type of the compression buffer mode after switching to the second base station; or

Optionally, the method further includes:

Based on the same inventive concept, the method for maintaining the continuity of the UDC function is also provided in the embodiment of the present invention. The device corresponding to the method is the device in the system that maintains the continuity of the UDC function according to the second embodiment of the present invention, and the method is solved. The principle of the problem is similar to that of the device, so the implementation of the method can be referred to the implementation of the device, and the details are not repeated here.

As shown in FIG. 25, the method for maintaining the continuity of the UDC function in the embodiment of the present invention includes:

Step 2501: After the terminal switches to the second base station, the second base station determines UDC related information of the second base station according to the capability information of the terminal and the capability information of the second base station.

Step 2502: The second base station sends the UDC related information of the second base station to the terminal, so that the terminal performs data compression processing by using a compression manner determined by UDC related information of the second base station.

Profile information, instructions for using the compression cache method.

As shown in FIG. 26, the method for maintaining the continuity of the UDC function in the embodiment of the present invention includes:

Step 2601, after receiving the second base station, the terminal receives the UDC related information of the second base station that is sent by the second base station, where the UDC related information of the second base station is that the second base station according to the The capability information of the terminal and the capability information of the second base station are determined;

Step 2602: The terminal determines a compression mode according to the UDC related information of the second base station, and performs compression processing on the data according to the compression mode.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the invention has been described, it will be understood that Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the invention without departing from the spirit and scope of the embodiments of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the embodiments of the invention.

Claims

A method for maintaining continuity of uplink data compression UDC functions, the method comprising:

The first base station sends a handover request message to the second base station, where the handover request message includes UDC related information of the terminal;

Transmitting, by the first base station, the UDC related information of the second base station returned by the second base station to the terminal, so that the terminal adopts the foregoing after switching to the second base station The compression method determined by the UDC related information of the second base station performs data compression processing;

The UDC related information of the second base station is determined according to UDC related information of the terminal.
The method of claim 1, wherein the UDC related information of the terminal is part or all of the following information:

The compressed cache configuration file profile information supported by the terminal;

Profile information currently used by the terminal;

Capability information of the terminal;

The type of compression cache mode currently used by the terminal.
The method of claim 1 wherein the UDC related information of the second base station is part or all of the following information:

Profile information, type of compression cache mode, and indication information using an empty compression cache.
The method according to claim 3, wherein if the UDC related information of the second base station is the compression buffer mode number, the first base station returns according to the received second base station After the UDC related information of the second base station is sent to the terminal, the UDC configuration information further includes:

Transmitting, by the first base station, the compressed buffer data corresponding to the terminal that is stored by the first base station to the second base station, so that the second base station is configured to the terminal according to the compressed cached data. The data is decompressed.
The method according to claim 3, wherein, if the UDC-related information of the second base station is the compression buffer mode number, the first base station sends a handover request message to the second base station, including:

The first base station sends, to the second base station, a handover request message including data of the compressed cache corresponding to the terminal stored by the first base station, so that when the second base station supports the UDC function, according to the The compressed cached data decompresses data of the terminal.
The method according to claim 4 or 5, wherein the first base station sends the UDC configuration information to the terminal according to the received UDC related information of the second base station returned by the second base station. ,Also includes:

After receiving the release message of the second base station, the first base station releases the compressed cache data corresponding to the terminal.
The method according to any one of claims 1 to 5, wherein after the first base station sends a handover request message to the second base station, the received UDC of the second base station returned by the second base station Before the related information is sent to the terminal, it also includes:

Determining, by the first base station, that the interface parameter in the handover confirmation message sent by the second base station has UDC related information of the second base station; or

The first base station determines that the radio resource control RRC reconfiguration message in the handover confirmation message sent by the second base station has UDC related information.
The method according to claim 7, wherein the first base station sends the received UDC related information of the second base station returned by the second base station to the terminal, including:

The first base station sends an RRC reconfiguration message in the handover confirmation message to the terminal, where the RRC reconfiguration message has UDC related information of the second base station.
The method of claim 7 further comprising:

If the first base station determines that the interface parameters and the handover confirmation message in the handover confirmation message do not have the UDC related information of the second base station, the first base station sends an RRC reconfiguration message in the handover confirmation message. Sending to the terminal, so that when determining that the received UD reconfiguration message does not include the UDC configuration information, the terminal determines to stop using the UDC function after switching to the second base station; or

If the first base station determines that the interface parameters and the handover confirmation message in the handover confirmation message do not have the UDC related information of the second base station, the first base station sends an RRC reconfiguration message in the handover confirmation message. Modifying, indicating that the terminal stops using the UDC function after switching to the second base station by using the modified RRC reconfiguration message.
A method of maintaining continuity of a UDC function, the method comprising:

The second base station receives the handover request message sent by the first base station, and determines the UDC related information of the second base station according to the UDC related information of the terminal in the handover request message;

Transmitting, by the second base station, UDC related information of the second base station to the first base station, so that the first base station sends UDC related information of the second base station to the terminal, so that the terminal After the handover to the second base station, the data compression processing is performed by using a compression manner determined by the UDC related information of the second base station.
The method according to claim 10, wherein the determining, by the second base station, the UDC related information of the second base station according to the UDC related information of the terminal in the handover request message comprises:

If the UDC related information of the terminal is the profile information supported by the terminal, the second base station selects the terminal and the second according to the profile information supported by the terminal and the profile information supported by the second base station. a profile supported by the base station, using profile information supported by the terminal and the second base station as UDC related information of the second base station; or

If the UDC-related information of the terminal is the profile information currently used by the terminal, when the second base station determines to support the profile currently used by the terminal, the profile information currently used by the terminal is used as the second base station. UDC related information; or

If the UDC-related information of the terminal is the type of the compression buffer mode currently used by the terminal, when the second base station determines to support the currently used compression cache mode, the second base station uses the compression cache mode currently used by the terminal. Type as UDC related information of the second base station; or

If the UDC related information of the terminal is the capability information of the terminal, the second base station determines the UDC related information of the second base station according to the capability information of the terminal and the capability information of the second base station.
The method according to claim 10, wherein the transmitting, by the second base station, the UDC related information of the second base station to the first base station comprises:

The second base station sends the UDC related information of the second base station to the first base station by adding an interface parameter and an RRC reconfiguration message in the handover confirmation message; or

The second base station adds the UDC related information of the second base station to an RRC reconfiguration message and sends the information to the first base station.
The method of claim 10, wherein after the second base station sends the UDC related information of the second base station to the first base station, the method further includes:

After receiving the RRC reconfiguration complete message of the terminal, the second base station sends a release message to the first base station, so that after receiving the release message, the first base station releases the corresponding terminal. Compress the data in the cache.
A method of maintaining continuity of a UDC function, the method comprising:

The terminal receives the UDC related information of the second base station that is sent by the first base station, where the UDC related information of the second base station is determined by the second base station according to the UDC related information of the terminal, and is sent to the Said first base station;

The terminal determines, according to the UDC related information of the second base station, a compression mode adopted after switching to the second base station, and performs compression processing on the data according to the compression mode.
The method according to claim 14, wherein the terminal determines, according to the UDC related information of the second base station, a compression mode adopted after switching to the second base station, including:

If the UDC related information of the second base station is the profile information, the terminal determines to perform data compression processing by using a profile corresponding to the profile information after switching to the second base station; or

If the UDC-related information of the second base station is of a compression buffering type, the terminal determines to perform data compression processing by using a compression buffer corresponding to the type of the compression buffering mode after switching to the second base station; or

If the UDC related information of the second base station is indication information that uses an empty compression buffer, the terminal determines to perform data compression processing by using an empty compression buffer after switching to the second base station.
The method of claim 14, wherein the receiving, by the terminal, the UDC related information of the second base station sent by the first base station comprises:

The terminal receives an RRC reconfiguration message including UDC related information of the second base station.
The method of claim 16 further comprising:

The UDC-related information of the second base station is not included in the RRC reconfiguration message received by the terminal, and determining to stop using the UDC function after switching to the second base station; or

The RRC reconfiguration message received by the terminal includes information indicating that the terminal stops using the UDC function after switching to the second base station, and determines to stop using the UDC function after switching to the second base station.
A method of maintaining continuity of a UDC function, the method comprising:

After the terminal is handed over to the second base station, the second base station determines the UDC related information of the second base station according to the capability information of the terminal and the capability information of the second base station;

The second base station sends the UDC related information of the second base station to the terminal, so that the terminal performs data compression processing by using a compression manner determined by UDC related information of the second base station.
The method according to claim 18, wherein the second base station acquires capability information of the terminal according to part or all of the following manners:

The second base station acquires capability information of the terminal from the received RRC reconfiguration complete message sent by the terminal;

Receiving, by the second base station, capability information of the terminal reported by the terminal;

The second base station acquires capability information of the terminal from the mobility management entity MME.
The method of claim 18, wherein the UDC related information of the second base station is part or all of the following information:

Profile information, instructions for using the compressed cache method.
The method of claim 18, wherein the transmitting, by the second base station, the UDC related information of the second base station to the terminal comprises:

The second base station sends an RRC reconfiguration message to the terminal, where the RRC reconfiguration message has UDC related information of the second base station.
A method of maintaining continuity of a UDC function, the method comprising:

After receiving the second base station, the terminal receives the UDC related information of the second base station that is sent by the second base station, where the UDC related information of the second base station is based on the capability of the second base station according to the terminal Information and capability information of the second base station are determined;

The terminal determines a compression mode according to the UDC related information of the second base station, and performs compression processing on the data according to the compression manner.
The method according to claim 22, wherein before the terminal receives the UDC related information of the second base station sent by the second base station, the method further includes:

The terminal reports the capability information of the terminal to the second base station by using an RRC reconfiguration complete message; or

After the terminal is switched, the terminal reports the capability information of the terminal to the second base station.
The method according to claim 22, wherein the terminal determines a compression mode according to the UDC-related information of the second base station, and performs compression processing on the data according to the compression mode, including:

If the UDC related information of the second base station is profile information, the terminal determines to perform data compression processing by using a profile corresponding to the profile information after switching to the second base station; or

If the UDC related information of the second base station is indication information using a compression buffering manner, the terminal determines to perform data compression processing by using a compression buffer after switching to the second base station.
The method of claim 22, wherein the receiving, by the terminal, the UDC related information of the second base station sent by the second base station comprises:

The terminal receives an RRC reconfiguration message including UDC related information of the second base station.
A first base station, comprising:

a first sending module, configured to send a handover request message to the second base station, where the handover request message includes uplink data compression UDC related information of the terminal;

a first receiving module, configured to send the received UDC related information of the second base station returned by the second base station to the terminal, so that the terminal adopts a location after switching to the second base station The compression mode determined by the UDC related information of the second base station performs data compression processing; wherein the UDC related information of the second base station is determined according to UDC related information of the terminal.
The first base station according to claim 26, wherein the UDC related information of the terminal is part or all of the following information:

The compressed cache configuration file profile information supported by the terminal;

Profile information currently used by the terminal;

Capability information of the terminal;

The type of compression cache mode currently used by the terminal.
The first base station according to claim 26, wherein the UDC related information of the second base station is part or all of the following information:

Profile information, type of compression cache mode, and indication information using an empty compression cache.
The first base station according to claim 28, wherein the first sending module is further configured to:

And if the UDC related information of the second base station is the compression buffer mode number, after sending the UDC configuration information to the terminal according to the received UDC related information of the second base station returned by the second base station, The data of the compressed cache corresponding to the terminal stored by the first base station is forwarded to the second base station, so that the second base station decompresses data of the terminal according to the compressed cached data.
The first base station according to claim 28, wherein the first sending module is specifically configured to:

And if the UDC related information of the second base station is the compression buffer mode number, sending, to the second base station, a handover request message including data of the compressed cache corresponding to the terminal stored by the first base station, so that When the second base station supports the UDC function, the data of the terminal is decompressed according to the data of the compressed cache.
The first base station according to claim 29 or 30, wherein the first sending module is further configured to:

After transmitting the UDC configuration information to the terminal according to the UDC related information of the second base station that is returned by the second base station, after receiving the release message of the second base station, releasing the corresponding Compress the cached data.
The first base station according to any one of claims 26 to 30, wherein the first sending module is further configured to:

After transmitting the handover request message to the second base station, before transmitting the received UDC related information of the second base station returned by the second base station to the terminal, determining, in the handover confirmation message sent by the second base station, The UDC related information of the second base station is included in the interface parameter; or

Determining that the radio resource control RRC reconfiguration message in the handover confirmation message sent by the second base station has UDC related information.
The first base station according to claim 32, wherein the first sending module is specifically configured to:

Sending, to the terminal, the RRC reconfiguration message in the handover confirmation message, where the RRC reconfiguration message has UDC related information of the second base station.
The first base station according to claim 32, wherein the first sending module is further configured to:

If it is determined that the interface parameter and the handover confirmation message in the handover confirmation message do not have the UDC related information of the second base station, send an RRC reconfiguration message in the handover confirmation message to the terminal, so that the When determining that the received UDC configuration information is not included in the received RRC reconfiguration message, the terminal determines to stop using the UDC function after switching to the second base station; or

If it is determined that the interface parameter and the handover confirmation message in the handover confirmation message do not have the UDC related information of the second base station, modify the RRC reconfiguration message in the handover confirmation message, and modify the RRC reconfiguration. The message indicates that the terminal stops using the UDC function after switching to the second base station.
A second base station, comprising:

a second receiving module, configured to receive a handover request message sent by the first base station, and determine UDC related information of the second base station according to the UDC related information of the terminal in the handover request message;

a second sending module, configured to send the UDC related information of the second base station to the first base station, so that the first base station sends the UDC related information of the second base station to the terminal, so that After the terminal is switched to the second base station, the terminal performs data compression processing by using a compression manner determined by the UDC related information of the second base station.
The second base station according to claim 35, wherein the second receiving module is specifically configured to:

If the UDC related information of the terminal is the profile information supported by the terminal, the profile supported by the terminal and the second base station is selected according to the profile information supported by the terminal and the profile information supported by the second base station. And using the profile information supported by the terminal and the second base station as the UDC related information of the second base station; or

If the UDC-related information of the terminal is the profile information currently used by the terminal, when the profile that is currently used by the terminal is determined, the profile information currently used by the terminal is used as the UDC-related information of the second base station; or

If the UDC-related information of the terminal is the type of the compression cache mode currently used by the terminal, when determining the support of the currently used compression cache mode, the type of the compression cache mode currently used by the terminal is used as the UDC related information of the two base stations; or

And determining the UDC related information of the second base station according to the capability information of the terminal and the capability information of the second base station, if the UDC related information of the terminal is the capability information of the terminal.
The second base station according to claim 35, wherein the second sending module is specifically configured to:

Adding the UDC related information of the second base station to the first base station by adding an interface parameter and an RRC reconfiguration message in the handover confirmation message; or

The UDC related information of the second base station is added to the RRC reconfiguration message and sent to the first base station.
The second base station according to claim 35, wherein the second sending module is further configured to:

After transmitting the UDC related information of the second base station to the first base station, after receiving the RRC reconfiguration complete message of the terminal, sending a release message to the first base station, so that the first base station is in the After receiving the release message, the data in the compression cache corresponding to the terminal is released.
A terminal, comprising:

a third receiving module, configured to receive UDC related information of the second base station that is sent by the first base station, where the UDC related information of the second base station is the UDC related information of the second base station according to the terminal Determining and transmitting to the first base station;

The first determining module is configured to determine, after the handover to the second base station, according to the UDC related information of the second base station, and perform compression processing on the data according to the compression manner.
The terminal according to claim 39, wherein the first determining module is specifically configured to:

If the UDC related information of the second base station is profile information, determining to perform data compression processing by using a profile corresponding to the profile information after switching to the second base station; or

If the UDC-related information of the second base station is of a compression buffer type, determining to perform data compression processing by using a compression buffer corresponding to the type of the compression buffer mode after switching to the second base station; or

If the UDC related information of the second base station is the indication information that uses the empty compression buffer, it is determined that the data compression processing is performed by using an empty compression buffer after switching to the second base station.
The terminal according to claim 39, wherein the third receiving module is specifically configured to:

Receiving an RRC reconfiguration message including UDC related information of the second base station.
The terminal according to claim 41, wherein the third receiving module is further configured to:

Receiving, in the RRC reconfiguration message, the UDC related information of the second base station, determining to stop using the UDC function after switching to the second base station; or

The received RRC reconfiguration message includes information indicating that the terminal stops using the UDC function after switching to the second base station, and determines to stop using the UDC function after switching to the second base station.
A second base station, comprising:

a second determining module, configured to determine UDC related information of the second base station according to capability information of the terminal and capability information of the second base station after the terminal is handed over to the second base station;

And a third sending module, configured to send the UDC related information of the second base station to the terminal, so that the terminal performs data compression processing by using a compression manner determined by UDC related information of the second base station.
The second base station according to claim 43, wherein the second determining module is specifically configured to:

The capability information of the terminal is obtained according to part or all of the following manners:

Obtaining capability information of the terminal from the received RRC reconfiguration complete message sent by the terminal;

Receiving capability information of the terminal reported by the terminal;

Obtaining capability information of the terminal from the mobility management entity MME.
The second base station according to claim 43, wherein the UDC related information of the second base station is part or all of the following information:

Profile information, instructions for using the compressed cache method.
The second base station according to claim 43, wherein the third sending module is specifically configured to:

And sending, to the terminal, an RRC reconfiguration message, where the RRC reconfiguration message has UDC related information of the second base station.
A terminal, comprising:

a fourth receiving module, configured to receive UDC related information of the second base station sent by the second base station after switching to the second base station, where the UDC related information of the second base station is the second base station Determining according to the capability information of the terminal and the capability information of the second base station;

And a third determining module, configured to determine a compression mode according to the UDC related information of the second base station, and perform compression processing on the data according to the compression manner.
The terminal according to claim 47, wherein the fourth receiving module is further configured to:

Receiving the capability information of the terminal to the second base station by using an RRC reconfiguration complete message before receiving the UDC related information of the second base station that is sent by the second base station; or

After the handover, the capability information of the terminal is reported to the second base station.
The terminal according to claim 47, wherein the third determining module is specifically configured to:

If the UDC related information of the second base station is profile information, determining to perform data compression processing by using a profile corresponding to the profile information after switching to the second base station; or

If the UDC related information of the second base station is the indication information that uses the compression buffering mode, it is determined that the data compression processing is performed by using a compression buffer after switching to the second base station.
The terminal according to claim 47, wherein the fourth receiving module is specifically configured to:

Receiving an RRC reconfiguration message including UDC related information of the second base station.
A first base station, comprising at least a processor and a transceiver, wherein

A processor for transmitting and receiving data through the transceiver and reading the program in the memory, performing the following process:

Transmitting, by the transceiver, a handover request message to the second base station, where the handover request message includes uplink data compression UDC related information of the terminal, and the second base station returned by the second base station received by the transceiver Sending UDC related information to the terminal, so that the terminal performs data compression processing by using a compression manner determined by UDC related information of the second base station after switching to the second base station; wherein the second base station The UDC related information is determined according to the UDC related information of the terminal;

The transceiver 1702 is configured to receive and transmit data under the control of the processor 1701.
The first base station according to claim 51, wherein the UDC related information of the terminal is part or all of the following information:

Profile profile information supported by the terminal;

Profile information currently used by the terminal;

Capability information of the terminal;

The type of compression cache mode currently used by the terminal.
The first base station according to claim 51, wherein the UDC related information of the second base station is part or all of the following information:

Profile information, type of compression cache mode, and indication information using an empty compression cache.
The first base station according to claim 53, wherein the processor is further configured to:

And if the UDC related information of the second base station is of a type of the compression buffering mode, sending, according to the received UDC related information of the second base station, the second base station, to the terminal, sending a UDC configuration to the terminal After the information, the data of the compressed cache corresponding to the terminal stored by the first base station is forwarded to the second base station, so that the second base station performs data on the terminal according to the compressed cached data. Unzip.
The first base station according to claim 53, wherein the processor is specifically configured to:

And if the UDC related information of the second base station is of a type of the compression buffer mode, the transceiver sends, by using the transceiver, a handover request that includes the compressed cache data corresponding to the terminal stored by the first base station. a message, so that when the second base station supports the UDC function, the data of the terminal is decompressed according to the compressed cached data.
The first base station according to claim 54 or 55, wherein the processor is further configured to:

After the UDC configuration information is sent to the terminal by the transceiver, according to the received UDC related information of the second base station that is returned by the second base station, after receiving the release message of the second base station, releasing the The data corresponding to the compressed cache of the terminal.
The first base station according to any one of claims 51 to 55, wherein the processor is further configured to:

After transmitting, by the transceiver, the handover request message to the second base station, before receiving the received UDC related information of the second base station returned by the second base station, the handover confirmation sent by the second base station is determined. The UDC related information of the second base station is included in the interface parameter in the message; or

Determining that the radio resource control RRC reconfiguration message in the handover confirmation message sent by the second base station has UDC related information.
The first base station according to claim 57, wherein the processor is specifically configured to:

Sending, to the terminal, the RRC reconfiguration message in the handover confirmation message, where the RRC reconfiguration message has UDC related information of the second base station.
The first base station according to claim 57, wherein the processor is further configured to:

If it is determined that the interface parameter and the handover confirmation message in the handover confirmation message do not have the UDC related information of the second base station, send an RRC reconfiguration message in the handover confirmation message to the terminal, so that the When determining that the received UDC configuration information is not included in the received RRC reconfiguration message, the terminal determines to stop using the UDC function after switching to the second base station; or

If it is determined that the interface parameter and the handover confirmation message in the handover confirmation message do not have the UDC related information of the second base station, modify the RRC reconfiguration message in the handover confirmation message, and modify the RRC reconfiguration. The message indicates that the terminal stops using the UDC function after switching to the second base station.
A second base station, comprising at least a processor and a transceiver, wherein

A processor for transmitting and receiving data through the transceiver and reading the program in the memory, performing the following process:

Receiving, by the transceiver, a handover request message sent by the first base station, determining UDC related information of the second base station according to the UDC related information of the terminal in the handover request message; and transmitting, by transmitting and receiving the UDC related information of the second base station Sending to the first base station, so that the first base station sends the UDC related information of the second base station to the terminal, so that the terminal adopts the first after switching to the second base station The compression method determined by the UDC related information of the second base station performs data compression processing;

A transceiver for receiving and transmitting data under the control of a processor.
The second base station according to claim 60, wherein the processor is specifically configured to:

If the UDC-related information of the terminal is the profile information supported by the terminal, the information is selected by the terminal and the second base station according to the profile information supported by the terminal and the profile information supported by the second base station. a profile, the profile information supported by the terminal and the second base station is used as the UDC related information of the second base station; or

If the UDC-related information of the terminal is the profile information currently used by the terminal, when the profile that is currently used by the terminal is determined, the profile information currently used by the terminal is used as the UDC-related information of the second base station; or

If the UDC-related information of the terminal is the type of the compression cache mode currently used by the terminal, when determining the support of the currently used compression cache mode, the type of the compression cache mode currently used by the terminal is used as the UDC related information of the two base stations; or

And determining the UDC related information of the second base station according to the capability information of the terminal and the capability information of the second base station, if the UDC related information of the terminal is the capability information of the terminal.
The second base station according to claim 60, wherein the processor is specifically configured to:

Adding the UDC related information of the second base station to the first base station through the transceiver 1802 by adding the interface parameter and the RRC reconfiguration message in the handover confirmation message; or

The UDC related information of the second base station is added to the RRC reconfiguration message and sent to the first base station by the transceiver 1802.
The second base station according to claim 60, wherein the processor is further configured to:

After transmitting the UDC related information of the second base station to the first base station, after receiving the RRC reconfiguration complete message of the terminal, the transceiver sends a release message to the first base station, so that the first After receiving the release message, the base station releases the data in the compression buffer corresponding to the terminal.
A terminal, comprising at least a processor and a transceiver, wherein

A processor for transmitting and receiving data through the transceiver and reading the program in the memory, performing the following process:

Receiving, by the transceiver, the UDC related information of the second base station that is sent by the first base station, where the UDC related information of the second base station is determined by the second base station according to the UDC related information of the terminal, and sent And determining, according to the UDC related information of the second base station, a compression mode adopted after switching to the second base station, and performing compression processing on the data according to the compression manner;

A transceiver for receiving and transmitting data under the control of a processor.
The terminal according to claim 64, wherein the processor is specifically configured to:

If the UDC related information of the second base station is profile information, determining to perform data compression processing by using a profile corresponding to the profile information after switching to the second base station; or

If the UDC-related information of the second base station is of a compression buffer type, determining to perform data compression processing by using a compression buffer corresponding to the type of the compression buffer mode after switching to the second base station; or

If the UDC related information of the second base station is the indication information that uses the empty compression buffer, it is determined that the data compression processing is performed by using an empty compression buffer after switching to the second base station.
The terminal according to claim 64, wherein the processor is specifically configured to:

Receiving an RRC reconfiguration message including UDC related information of the second base station.
The terminal according to claim 66, wherein the processor is further configured to:

Determining, by using the UDC related information of the second base station, that the RRC reconfiguration message received by the transceiver stops using the UDC function after switching to the second base station; or

The RRC reconfiguration message received by the transceiver includes information indicating that the terminal stops using the UDC function after switching to the second base station, and determines to stop using the UDC function after switching to the second base station.
A second base station, comprising at least a processor and a transceiver, wherein

A processor for transmitting and receiving data through the transceiver and reading the program in the memory, performing the following process:

After the terminal is handed over to the second base station, determining UDC related information of the second base station according to the capability information of the terminal and the capability information of the second base station; and transmitting, by the transceiver, the UDC related information of the second base station Giving the terminal, so that the terminal performs data compression processing by using a compression manner determined by UDC related information of the second base station;

A transceiver for receiving and transmitting data under the control of a processor.
The second base station according to claim 68, wherein the processor is specifically configured to:

The capability information of the terminal is obtained according to part or all of the following manners:

Obtaining capability information of the terminal from the received RRC reconfiguration complete message sent by the terminal;

Receiving capability information of the terminal reported by the terminal;

Obtaining capability information of the terminal from the mobility management entity MME.
The second base station according to claim 68, wherein the UDC related information of the second base station is part or all of the following information:

Profile information, instructions for using the compression cache method.
The second base station according to claim 68, wherein the processor is specifically configured to:

And sending, to the terminal, an RRC reconfiguration message, where the RRC reconfiguration message has UDC related information of the second base station.
A terminal, comprising at least a processor and a transceiver, wherein

A processor for transmitting and receiving data through the transceiver and reading the program in the memory 2104 performs the following process:

After the second base station is switched, the UDC-related information of the second base station sent by the second base station is received by the transceiver, where the UDC-related information of the second base station is the second base station according to the terminal Determining the capability information and the capability information of the second base station; determining a compression mode according to the UDC related information of the second base station, and performing compression processing on the data according to the compression mode;

A transceiver for receiving and transmitting data under the control of a processor.
The terminal according to claim 72, wherein the processor is further configured to:

Receiving the capability information of the terminal to the second base station by using an RRC reconfiguration complete message before receiving the UDC related information of the second base station that is sent by the second base station; or

After the handover, the capability information of the terminal is reported to the second base station.
The terminal according to claim 72, wherein the processor is specifically configured to:

If the UDC related information of the second base station is profile information, determining to perform data compression processing by using a profile corresponding to the profile information after switching to the second base station; or

If the UDC related information of the second base station is the indication information that uses the compression buffering mode, it is determined that the data compression processing is performed by using a compression buffer after switching to the second base station.
The terminal of claim 74, wherein the processor is specifically configured to:

Receiving an RRC reconfiguration message including UDC related information of the second base station.