TWI670983B - Method and device for maintaining continuity of UDC function - Google Patents

Abstract

The embodiments of the present invention belong to the field of wireless communication technologies, and in particular, to a method and a device for maintaining the continuity of a UDC function, which are used to solve the problem that the target base station cannot correctly decompress the terminal when the terminal in the prior art is switched from the source base station to the target base station. The problem of sending upstream compressed data. Transmitting, by the first base station, a handover request message to the second base station, and transmitting, to the terminal, the UDC related information of the second base station that is received by the second base station, so that the terminal is switched to the second base After the station, the data compression processing is performed by using the compression method determined by the UDC related information of the second base station. Therefore, the negotiation between the terminal and the second base station is performed after the handover, and after the terminal switches to the second base station, the second base station can accurately decompress the uplink compressed data sent by the terminal.

Description

Method and device for maintaining continuity of UDC function

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

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

At present, there are two solutions for correctly decompressing the terminal and the base station side. One is that the terminal and the base station side maintain the same compression cache. The terminal compresses the uplink data according to the compressed cache data established by the terminal and sends it to the base station. The base station decompresses the uplink compressed data of the received terminal according to the compressed cache data established by itself; the other is that the terminal and the base station download the predefined or save some compressed cache configuration files for compression and decompression ( Profile) information, and through signaling interaction, determine the profile used to compress and decompress the uplink data of the terminal.

In a mobility scenario, the terminal needs to switch from the currently connected source base station to the target base station. For example, the X2 handover procedure of the LTE system as shown in FIG. Source base According to the measurement result of the terminal, the handover decision is performed, the appropriate target cell is selected, and the handover request is sent to the target base station; if the target base station allows the terminal to connect, the handover request confirmation message is returned to the source base station (which carries the transmission generated by the target base station) a handover command to the terminal; the source base station sends a handover command to the terminal; after receiving the handover command, the terminal connects to the target cell, and sends a Radio Resource Control (RRC) connection reconfiguration complete message to the target cell; the target base station The MME sends a path switching request, and the MME then sends a user-side 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 connecting the source base station, the target The base station cannot correctly decompress the uplink compressed data sent by the terminal.

In summary, when the terminal is switched 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.

The present invention provides a method and a device for maintaining the continuity of a 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: a first base station transmitting a handover request message to a second base station; wherein the handover request message Including the uplink data compression UDC related information of the terminal; 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 switches to the After the second base station, the data compression processing is performed by using the compression method determined by the UDC related information of the second base station; wherein the UDC related information of the second base station is determined according to the 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; and a compressed cache mode currently used by the terminal Types of.

Optionally, the UDC related information of the second base station is part or all of the following information: profile information, type of compressed cache mode, and indication information using an empty compressed cache.

Optionally, if the UDC related information of the second base station is the compressed cache mode number, the first base station sends the UDC related information of the second base station returned by the second base station to the After the terminal sends the UDC configuration information, the method includes: the first base station forwarding, by the first base station, the compressed cache data corresponding to the terminal to the second base station, so that the second base station is configured according to the Compress the cached data to decompress the data of the terminal.

Optionally, if the UDC related information of the second base station is the compressed cache The first base station sends a handover request message to the second base station, where the first base station sends the second base station to the second base station to send the compressed cache data corresponding to the terminal stored by the first base station. The switching request message is such that when the second base station supports the UDC function, the data of the terminal is decompressed according to the compressed cached data.

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: the first base station receives the After the release message of the second base station, the compressed cache data corresponding to the terminal is released.

Optionally, after the first base station sends the handover request message to the second base station, sending the received UDC related information of the second base station returned 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 the UDC related information of the second base station; or the first base station determines the handover confirmation message sent by the second base station There are UDC related information in the RRC reconfiguration message.

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 adds the RRC in the handover confirmation message. The configuration message is sent to the terminal, where the RRC reconfiguration message has the UDC related information of the second base station.

Optionally, the method further includes: 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 confirms the handover In the message The RRC reconfiguration message is sent 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 Determining, by the first base station, 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, and the first base station modifies the RRC reconfiguration message in the handover confirmation message, The modified RRC reconfiguration message indicates that the terminal stops using the UDC function after switching to the second base station.

In a second aspect, the method for maintaining the continuity of the UDC function in the embodiment of the present invention includes: receiving, by the second base station, a handover request message sent by the first base station, and determining, according to the UDC related information of the terminal in the handover request message, the second The UDC related information of the base station; the second base station transmits 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 first base station And 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.

Optionally, the second base station determines, according to the UDC related information of the terminal in the handover request message, the UDC related information of the second base station, including: if the UDC related information of the terminal is profile information supported by the terminal, The second base station selects a profile supported by the terminal and the second base station according to profile information supported by the terminal and profile information supported by the second base station, and supports the profile supported by the terminal and the second base station. The information 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, the second base When the platform determines 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; or if the UDC related information of the terminal is the compressed cache mode currently used by the terminal. Type, the second base station determines the type of compression cache currently used by the terminal as the UDC related information of the second base station when determining to support the currently used compressed cache mode; or if the terminal UDC The related information is the capability information of the terminal, and 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 second base station sends the UDC related information of the second base station to the first base station, where the second base station adds the UDC related information of the second base station to the handover confirmation message. The interface parameter and the RRC reconfiguration message are sent to the first base station; or the second base station adds the UDC related information of the second base station to the RRC reconfiguration message and sends the information to the first base station.

Optionally, 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 the The first base station sends a release message, so that after receiving the release message, the first base station releases the data in the compressed cache corresponding to the terminal.

In a third aspect, the method for maintaining the continuity of the UDC function in the embodiment of the present invention includes: receiving, by the terminal, UDC related information of the second base station sent by the first base station; 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; the terminal determines to switch according to the UDC related information of the second base station. The compression method adopted after the second base station is performed, and the data is compressed according to the compression method.

Optionally, the terminal determines, according to the UDC related information of the second base station, a compression manner that is used after switching to the second base station, and includes: if the UDC related information of the second base station is profile information, The terminal determines to use the profile corresponding to the profile information to perform data compression processing after switching to the second base station; or if the UDC related information of the second base station is of a compression cache type, the terminal determines to switch to the After the second base station, the data compression processing is performed by using a compression cache corresponding to the type of the compressed cache mode; or if the UDC related information of the second base station is an indication information using an empty compressed cache, the terminal It is determined that the data compression processing is performed by using an empty compression cache after switching to the second base station.

Optionally, the terminal receives the UDC related information of the second base station that is sent by the first base station, and includes: the terminal receives an RRC reconfiguration message that includes the UDC related information of the second base station.

Optionally, the method further includes: 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; or the terminal receives 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 after switching to the second base station. Use the UDC function.

In a fourth aspect, the method for maintaining the continuity of the UDC function according to the embodiment of the present invention includes: after the terminal switches to the second base station, 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; the second base station sends the UDC related information of the second base station to the terminal, so that the terminal performs the compression method determined by the UDC related information of the second base station. Data compression processing.

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; The second base station receives 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.

Optionally, the UDC related information of the second base station is part or all of the following information: profile information, and instructions for using a compressed cache method.

Optionally, the second base station sends the UDC related information of the second base station to the terminal, where the second base station sends an RRC reconfiguration message to the terminal, where the RRC reconfiguration message includes the 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, The terminal receives the 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 according to the terminal The capability information and the 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 compresses the data according to the compression mode.

Optionally, before receiving, by the second base station, the UDC related information of the second base station, the terminal further includes: the terminal reporting 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, the compression mode, including: if the UDC related information of the second base station is profile information, the terminal determines to adopt the switch after switching to the second base station The profile corresponding to the profile information is subjected to data compression processing; or if the UDC related information of the second base station is the indication information using the compressed cache mode, the terminal determines to adopt a compression cache method after switching to the second base station Data compression processing.

Optionally, the terminal receives the UDC related information of the second base station that is sent by the second base station, and includes: the terminal receives an RRC reconfiguration message that includes the UDC related information of the second base station.

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, and the first receiving module is configured to receive the second The UDC related information of the second base station returned by the base station is sent to the terminal, so that the terminal performs data compression processing by using a compression method 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 determined according to the 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; and a compressed cache mode currently used by the terminal Types of.

Optionally, the UDC related information of the second base station is part or all of the following information: profile information, type of compressed cache mode, and indication information using an empty compressed cache.

Optionally, the first sending module is further configured to: if the UDC related information of the second base station is the compressed cache mode number, according to the received second base station returned by the second base station The UDC related information, after sending the UDC configuration information to the terminal, forwarding, to the second base station, the compressed cache data corresponding to the terminal stored by the first base station, so that the second base station is fast according to the compression The data obtained is decompressed from the data of the terminal.

Optionally, the first sending module is specifically configured to: If the UDC related information of the second base station is the compressed cache mode number, send, 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 When the second base station supports the UDC function, the second base station decompresses the data of the terminal according to the compressed cache data.

Optionally, the first sending module is further configured to: after receiving the UDC configuration information, send 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, After the release message of the second base station, the compressed cache data corresponding to the terminal is released.

Optionally, the first sending module is further configured to: after sending the handover request message to the second base station, send the received UDC related information of the second base station returned by the second base station to the terminal And determining, in the interface parameter in the handover confirmation message sent by the second base station, the UDC related information of the second base station; or determining the radio resource control RRC reconfiguration message in the handover confirmation message sent by the second base station. There are UDC related information.

Optionally, the first sending module is configured to send the RRC reconfiguration message in the handover confirmation message to the terminal, where the RRC reconfiguration message has the 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, the RRC in the handover confirmation message Transmitting a message to the terminal, so that the terminal determines to stop using the UDC function after switching to the second base station when determining that the received UD reconfiguration message does not include the UDC configuration information; 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 indicate by using the modified RRC reconfiguration message. 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, according to the UDC related information of the terminal in the handover request message Determining UDC related information of the second base station; the second sending module is configured to send the UDC related information of the second base station to the first base station, so that the first base station can use the second base The UDC related information of the station is sent to the terminal, so that the terminal performs data compression processing by using a compression method determined by the UDC related information of the second base station after switching to the second base station.

Optionally, the second receiving module is configured to: if the UDC related information of the terminal is profile information supported by the terminal, select the profile information supported by the terminal and profile information supported by the second base station a profile supported by the terminal and the second base station, 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 currently used by the terminal The profile information, when determining 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; or if the UDC related information of the terminal is the compression currently used by the terminal The type of the fetch mode, the compression cache currently used by the terminal when determining the support for the currently used compressed cache mode. The type of the mode is used as the 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 is determined according to the capability information of the terminal and the capability information of the second base station Taiwan's UDC related information.

Optionally, the second sending module is configured to: send 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 first base station in an RRC reconfiguration message.

Optionally, the second sending module is further configured to: after sending the UDC related information of the second base station to the first base station, after receiving the RRC reconfiguration complete message of the terminal, to the first base The station sends a release message, so that the first base station releases the data in the compressed cache corresponding to the terminal after receiving the release message.

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 sent by the first base station; wherein, the second base station The UDC related information is determined by the second base station according to the UDC related information of the terminal, and sent to the first base station; and the first determining module is configured to determine, according to the UDC related information of the second base station, that the switching is performed. The compression method adopted after the second base station is performed, and the data is compressed according to the compression method.

Optionally, the first determining module is specifically configured to: if the UDC related information of the second base station is profile information, determine to use the profile corresponding to the profile information to perform data compression after switching to the second base station Processing; or If the UDC related information of the second base station is a type of the compressed cache mode, determining to perform data compression processing by using a compression cache corresponding to the type of the compressed cache mode after switching to the second base station; or The UDC related information of the second base station is an indication information that uses an empty compressed cache, and then determines to perform data compression processing by using an empty compressed cache after switching to the second base station.

Optionally, the third receiving module is specifically configured to: receive an RRC reconfiguration message that includes the UDC related information of the second base station.

Optionally, the third receiving module is further configured to: receive the UDC related information of the second base station in the received RRC reconfiguration message, and determine 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.

The ninth aspect, the second second base station of the embodiment of the present invention includes: a second determining module, configured to: after the terminal switches to the second base station, according to the capability information of the terminal, and the second base station The capability information determines the UDC related information of the second base station; the third sending module is configured to send the UDC related information of the second base station to the terminal, so that the terminal adopts the UDC by the second base station The compression method determined by the related information is used for data compression processing.

Optionally, the second determining module is specifically configured to: obtain the capability information of the terminal 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; and acquiring capability information of the terminal from the mobility management entity MME.

Optionally, the UDC related information of the second base station is part or all of the following information: profile information, and instructions for using a compressed cache method.

Optionally, the third sending module is configured to send an RRC reconfiguration message to the terminal, where the RRC reconfiguration message has UDC related information of the second base station.

According to a tenth aspect, the second terminal of the embodiment of the present invention includes: a fourth receiving module, configured to receive, after switching to the second base station, the UDC related information of the second base station sent by the second base station The UDC related information of the second base station is determined by the second base station according to the capability information of the terminal and the capability information of the second base station; and the third determining module is configured to use, according to the second base station The UDC related information determines the compression method, and compresses the data according to the compression method.

Optionally, the fourth receiving module is further configured to: before receiving the UDC related information of the second base station sent by the second base station, report the terminal to the second base station by using an RRC reconfiguration complete message Ability information; or after switching to, report the capability information of the terminal 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 profile information, determining to use the profile corresponding to the profile information to perform data compression processing after switching to the second base station; or if the UDC related information of the second base station is using compression The indication information of the cache mode determines that the data compression processing is performed by using a compression cache method after switching to the second base station.

Optionally, the fourth receiving module is specifically configured to: receive an RRC reconfiguration message that includes the UDC related information of the second base station.

In the embodiment of the present invention, when the terminal is switched from the first base station to the second base station, the first base station transmits the UDC related information of the terminal to the second base station, and the second base station generates the second base according to the UDC related information of the terminal. The UDC related information of the station is sent to the terminal through the first base station, so that after the terminal switches to the second base station, the uplink data is compressed by using the compression method corresponding to the UDC related information of the second base station, thereby realizing After the switching, the terminal negotiates with the compression mode of the second base station, and after the terminal switches to the second base station, the second base station can accurately decompress the uplink compressed data sent by the terminal.

301~311, 401~411, 501~514, 601~613, 701~711, 801~811, 1001~1006, 1101~1107, 2201~2202, 2301~2302, 2401~2402, 2501~2502, 2601~ 2602‧‧‧Steps

10‧‧‧First Base Station

20, 40‧‧‧ second base station

30, 50‧‧‧ Terminal

1201‧‧‧First Sending Module

1202‧‧‧First Receiver Module

1301‧‧‧second receiving module

1302‧‧‧second transmission module

1401‧‧‧ Third Receiver Module

1402‧‧‧First Confirmation Module

1501‧‧‧Second determination module

1502‧‧‧3rd transmission module

1601‧‧‧fourth receiving module

1602‧‧‧ third determination module

1700, 1800, 1900, 2000, 2100‧‧ ‧ busbars

1701, 1801, 1901, 2001, 2101‧‧‧ processors

1702, 1802, 1902, 2002, 2102‧‧‧ transceiver

1703, 1803, 1903, 2003, 2103‧‧‧ bus interface

1704, 1804, 1904, 2004, 2104‧‧‧ memory

1705, 1805, 2005‧‧‧ antenna

1905, 2105‧‧‧ user interface

1 is a schematic diagram of an X2 handover process of an LTE system in the background art; FIG. 2 is a schematic structural diagram of a system for maintaining continuity of a UDC function according to an embodiment of the present invention; FIG. 3 is a schematic diagram of a system in which a terminal currently uses a profile mode according to an embodiment of the present invention; A schematic flowchart of a method for determining a compression mode after a switch; FIG. 4 is a schematic flowchart of a method for determining a compression mode after a switch 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 post-switching compression mode when a terminal currently uses a compression cache mode according to Embodiment 3 of the present invention; FIG. 6 is a schematic diagram of determining a post-switching compression when a terminal currently uses a compression cache mode according to Embodiment 4 of the present invention; FIG. 7 is a schematic flowchart of a method for determining a compression mode after a second base station does not support a UDC function according to Embodiment 5 of the present invention; FIG. 8 is a second base according to Embodiment 6 of the present invention; FIG. 9 is a schematic structural diagram of a system for maintaining continuity of a UDC function according to an embodiment of the present invention; FIG. 10 is a schematic diagram of a system structure for maintaining continuity of a UDC function according to an embodiment of the present invention; FIG. FIG. 11 is a schematic flowchart of a method for determining a compression mode after a UDC function after a terminal is connected to a second base station according to Embodiment 8 of the present invention; FIG. 11 is a schematic flowchart of a method for determining a compression mode after a UDC function after a terminal is connected to a second base station according to Embodiment 8 of the present invention; FIG. 13 is a schematic structural diagram of a first type of first base station according to an embodiment of the present invention; FIG. 13 is a diagram of a first type of second base station according to an embodiment of the present invention; FIG. 14 is a schematic structural diagram of a second terminal according to an embodiment of the present invention; FIG. 15 is a schematic structural diagram of a second base station according to an embodiment of the present invention; FIG. 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 base station according to an embodiment of the present invention; FIG. 18 is a schematic structural diagram of a third base station according to an embodiment of the present invention; FIG. 19 is a third terminal structure according to an embodiment of the present invention; FIG. 20 is a schematic structural diagram of a fourth second base station according to an embodiment of the present invention; FIG. FIG. 21 is a schematic structural diagram of a fourth terminal according to an embodiment of the present invention; FIG. 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 second embodiment of the present invention. FIG. 24 is a schematic flowchart of a method for maintaining continuity of a UDC function of a terminal according to an embodiment of the present invention; FIG. 25 is a second second base station assisting method according to an embodiment of the present invention; A schematic flowchart of a method for maintaining continuity of a UDC function by a terminal; 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.

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 a person of ordinary skill in the art based on the embodiments of the present invention without departing from the scope of the present invention 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 multiple. Wideband Code Division Multiple Access (WCDMA) system, general packet radio industry 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 a portable device, 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 For "cellular" phones, computers with wireless communication capabilities, etc., the user devices can also be portable, pocket-sized, handheld, built-in or mobile devices.

In an embodiment of the invention, a base station (e.g., a connection point) may refer to a device in a connected network that communicates with a wireless terminal over one or more magnetic regions on an empty interfacing surface. The base station can be used to convert the received air frame and IP packets into a router between the wireless terminal and the rest of the connection network, wherein the remainder of the connection network can include an Internet Protocol (IP) network. The base station can also coordinate the 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 (NodeB or eNB or e- in LTE). 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; wherein the handover request message includes UDC related information of the terminal; the first base station receives the received return from the second base station The UDC related information of the second base station is sent to the terminal, so that the terminal uses the UDC related information of the second base station after switching to the second base station The determined compression mode performs data compression processing; wherein the UDC related information of the second base station is generated according to the UDC related information of the terminal. In the embodiment of the present invention, when the terminal is switched from the first base station to the second base station, the first base station transmits the UDC related information of the terminal to the second base station, and the second base station generates the second information according to the UDC related information of the terminal. The UDC related information of the base station is sent to the terminal through the first base station, so that after the terminal switches to the second base station, the uplink data is compressed by using the compression method corresponding to the UDC related information of the second base station. After the handover, the terminal negotiates with the compression mode of the second base station, and 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 departing from the scope of the present invention 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 of the station is sent to the terminal, so that the terminal performs data compression processing by using a compression method determined by the UDC related information of the second base station after switching to the second base station; the second base station 20 uses Receiving a handover request message sent by the first base station, according to the cut Transmitting the UDC related information of the terminal in the request message, determining UDC related information of the second base station, and transmitting the UDC related information of the second base station to the first base station, so that the first 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; and the terminal 30 is configured to receive Decoding information of the second base station sent by 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 using the compression method according to the compression mode Performing a compression process; wherein 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.

Optionally, the UDC related information of the terminal is part or all of the following information: a profile profile supported by the terminal; a profile currently used by the terminal; capability information of the terminal; and a compressed 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 compressed cache mode, and indication information using an empty compressed cache.

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 according to the terminal is specifically described below. UDC related information to determine the second base station UDC related information method.

The profile information is the identifier information that can be used to represent the profile; for example, the number corresponding to the profile or the 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 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. The supported profile uses the profile information supported by the terminal and the second base station as the 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 number of profiles supported by the terminal is 1, 6, and 7, and the profiles supported by the second base station are 1, 2, 3, 4, 5, and 6; then the second base station and the second base station are both In the supported profile numbers 1, 6, select a profile number 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 the second base station determines the profile currently used by the terminal, the profile information currently used by the terminal is used as the UDC correlation of the second base station. News.

For example, the compression mode currently used by the terminal is profile mode, and the profile The 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 uses profile number 1 as the second base station. UDC related information.

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 turns to the first The base station returns information to stop the UDC function, 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 compressed cache mode currently used by the terminal.

The first base station sends the type of the compressed cache mode currently used by the terminal to the second base station; when the second base station determines to support the currently used compressed cache mode, the compressed cache mode currently used by the terminal is used. The type is used as the UDC related information of the second base station.

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

Specifically, all the profile information supported by the terminal and the type of all the compressed cache 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 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 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 compressed cache 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 profile information supported by the terminal and all types of compressed cache modes supported by the terminal.

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

After the second base station determines the UDC related information of the second base station, the second base station transmits 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 in the handover confirmation message.

Specifically, the following two methods can be used:

The first base station receives the UDC related information of the second base station in the interface parameter and the RRC reconfiguration message in the handover confirmation message, and sends the first base station to the first base station. After switching the confirmation message, judge the handover confirmation message Whether the UDC related information of the second base station is included in the interface parameter in the medium.

Specifically, the following two cases are included:

1. 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 second base station. Indicates the compression method that needs to be used after the terminal is switched.

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

Correspondingly, the terminal receives an RRC reconfiguration message including the 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 the 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 the first base station determines the interface in the handover confirmation message The parameter and the handover confirmation message do not have the UDC related information of the second base station, and the first base station sends the RRC reconfiguration message in the handover confirmation message to the terminal, so that the terminal determines the received RRC. When the UDC configuration information is not included in the reconfiguration message, it is determined that the UDC function is stopped 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.

Mode 2, the second base station adds the UDC related information of the second base station to the RRC heavy The configuration message is sent to the first 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:

1. 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, and determines that the second base station supports the UDC function, and determines the second The compression method that the base station indicates after the terminal is switched.

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

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

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 performs the RRC reconfiguration message in the handover confirmation message. The modification, by using the modified RRC reconfiguration message, instructs the terminal to stop using the UDC function after switching to the second base station.

Specifically, the first base station cancels the RRC reconfiguration in the handover confirmation message. When modifying the information, you need to modify the parameters in the RRC reconfiguration message, for example, to change the indication to stop the UDC. 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 function after switching to the second base station.

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 using the profile method, the terminal and the base station are required to download the same profile from a public server, and the profile information used in the interaction between the terminal and the base station is determined, so that the terminal and the base station can Compress and decompress data by using the same profile. The profile information includes a compression method, a decompressed register information, and a decompressed mapping table.

When the compression cache method is adopted, the terminal and the base station need to maintain the same compression cache; the terminal compresses the uplink data according to the compressed cache data, and after the terminal sends the compressed uplink data to the base station, the base station The data of the terminal is decompressed according to the compressed cache stored by itself.

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 cache; that is, the UDC related information sent by the second base station to the second base station of the first base station is compressed. The type of cache method or the indication of using an empty compression cache.

When the UDC related information of the second base station is the type of the compressed cache mode, since the second base station does not have the compressed cache data corresponding to the terminal, the first base station needs The data of the compressed cache corresponding to the terminal that is stored by the terminal is forwarded to the second base station, and may be forwarded in the following two manners: mode 1. The second base station returns the second base station according to the received second base station. After the UDC information about the base station is sent to the terminal, the first base station forwards the compressed cached data corresponding to the terminal stored by the first base station to the second base station, so that the data is forwarded to the second base station. The second base station decompresses the data of the terminal according to the compressed cache data; mode 2, the first base station sends, to the second base station, a compressed cache corresponding to the terminal stored by the first base station The switching request message of the data is such that when the second base station supports the UDC function, the data of the terminal is decompressed according to the compressed cached data.

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

It should be noted that, after receiving the compressed cache 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; the first base station receives the second base station. After the received completion message is returned, it is determined that the data of the compressed cache corresponding to the terminal is sent.

After receiving the RRC reconfiguration message including the UDC related information of the second base station, determining, after switching to the second base station, according to the UDC related information of the second base station in the RRC reconfiguration message, The compression method used, and the data is compressed according to the compression method.

According to different UDC related information of the second base station, different compression methods for performing data compression processing are determined. 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 the profile corresponding to the profile information after switching to the second base station.

2. The UDC related information of the second base station is a type of compressed cache mode.

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

3. The UDC related information of the second base station is an indication information using an empty compressed cache.

The terminal determines to perform data compression processing by using an empty compression cache 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 using the empty compressed cache, the first base station does not need to forward the compressed cache data corresponding to the terminal to the second base station, and at the same time, A base station can clear the data of the compressed cache corresponding to the terminal.

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

For the terminal side, after receiving the RRC reconfiguration message, the terminal performs configuration according to the RRC reconfiguration message, connects to the second base station after the configuration is completed, and sends an RRC reconfiguration complete message to the second base station.

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

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. Features.

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: First The base station determines that the terminal needs to perform handover according to the measurement information reported by the terminal. Step 304: The first base station sends a handover request message to the second base station. The handover request message includes the number of the profile currently used by the terminal. The second base station determines, according to the number of the profile currently used by the terminal, the UDC related information of the second base station as a profile number, where the profile number is the number of the profile currently used by the terminal; and step 306, the second base station is directed to the first base The station sends a handover confirmation message, where the profile number 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 the second base station support UDC function; Step 308: The first base station sends an RRC reconfiguration message to the terminal; Step 309, the terminal synchronizes to the new cell; Step 310, the terminal sends an RRC reconfiguration complete message to the second base station; Step 311, the terminal The second base station transmits the uplink data compressed by using the 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: First The base station determines that the terminal needs to perform handover according to the measurement information reported by the terminal. Step 404: The first base station sends a handover request message to the second base station. The handover request message includes a profile supported by the terminal. Step 405: The second base The station determines the UDC related information of the second base station as the profile number according to the profile supported by the terminal and the profile supported by the second base station; wherein the profile number is the number of the 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 handover confirmation The profile number is included in the interface parameter and the RRC reconfiguration message in the message; in step 407, after receiving the handover confirmation message, the first base station determines that the second base station supports the UDC function; and in step 408, the first base station sends the configuration to the terminal. RRC reconfiguration message; Step 409: The terminal synchronizes to the new cell; Step 410: The terminal sends an RRC reconfiguration complete message to the second base station; Step 411: The terminal sends the profile mode corresponding to the profile number to the second base station. Compressed upstream data.

Embodiment 3

The method of compressing data currently used by the terminal is a compression cache 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 compressed cache mode currently used by the terminal. The second base station supports the 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: First The base station determines that the terminal needs to perform handover according to the measurement information reported by the terminal. Step 504: The first base station sends a handover request message to the second base station. The handover request message includes the number of the compressed cache mode currently used by the terminal. Step 505: The second base station determines, according to the number of the compressed cache mode currently used by the terminal, that the UDC related information of the second base station is a compressed cache mode number, where the compressed cache mode is programmed. The number is the 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 compression cache. Step 507: After receiving the handover confirmation message, the first base station determines that the second base station supports the UDC function; in step 508, the first base station sends an RRC reconfiguration message to the terminal; step 509, the first base station will The data of the compressed cache corresponding to the terminal is forwarded to the second base station; in step 510, the terminal synchronizes to the new cell; in step 511, the terminal sends an RRC reconfiguration complete message to the second base station; step 512, the second base station a base station sends a release message; in step 513, the first base station releases the data in the compressed cache corresponding to the stored terminal; and in step 514, the terminal sends the compressed cache corresponding to the number of the compressed cache mode to the second base station. The way to compress the upstream data.

Embodiment 4

The method of compressing data currently used by the terminal is a compression cache 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 capability information of the terminal, and the second base station supports the UDC. Features.

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 that the terminal needs to perform handover according to the measurement information reported by the terminal. 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. 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 an indication information that uses an empty compressed cache; and step 606, the second base station is first. The base station sends a handover confirmation message, where the interface parameter and the RRC reconfiguration message in the handover confirmation message both include the indication information of the compressed compression cache. In step 607, after receiving the handover confirmation message, the first base station determines the The second base station supports the UDC function; in step 608, the first base station sends an RRC reconfiguration message to the terminal; in step 609, the terminal synchronizes to the new cell; in step 610, the terminal sends an RRC reconfiguration complete message to the second base station; The second base station sends a release message to the first base station; in step 612, the first base station releases the stored terminal corresponding to the fast compression The information; Step 613, the terminal transmits compresses empty cache to the second base station for uplink data compression.

Embodiment 5

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 does not support the UDC function; Moreover, the first base station and the second base station agree to add the UDC related information of the second base station 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: First The base station determines that the terminal needs to perform handover according to the measurement information reported by the terminal. Step 704: The first base station sends a handover request message to the second base station. The handover request message includes a profile supported by the terminal. Step 705: The second base The 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; and step 706, after the first base station receives the handover confirmation message, the handover is performed. The RRC reconfiguration message in the acknowledgment message is parsed to determine that the RRC reconfiguration message does not include the UDC related information of the second base station; the first base station modifies the RRC reconfiguration message; and in step 707, the first base station is modified. The RRC reconfiguration message is sent 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 Step to a new cell; step 710, the terminal transmits to the second base station RRC reconfiguration complete message; Step 711, the terminal transmits uplink data without compressing the second base station.

Embodiment 6

The compressed data currently used by the terminal is compressed and cached, and the first The UDC related information of the terminal included in the handover request message sent by the base station to the second base station is the compression cache mode number currently used 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 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: First The base station determines, according to the measurement information reported by the terminal, that the terminal needs to perform the handover; in step 804, the first base station sends a handover request message to the second base station; where the handover request message includes the compression cache mode number currently used by the terminal; 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 the handover confirmation message. The interface parameter does not include the UDC related information of the second base station; determining 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; and step 808, the terminal determines to switch to the second After the base station needs to stop the UDC function; step 809, the terminal synchronizes to the new cell; step 810, the terminal sends the RRC weight to the second base station. The configuration completion message is sent; in step 811, the terminal sends the 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; and a second base station 40, configured to switch to the terminal at the terminal. After the second base station, 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; and transmitting the UDC related information of the second base station to the terminal, so that the terminal The data compression process is performed by using a compression method determined by the UDC related information of the second base station; and the terminal 50 is configured to receive, after switching to the second base station, the UDC correlation of the second base station sent by the second base station. Information; determining a compression mode according to the UDC related information of the second base station, and compressing the data according to the compression manner; wherein, the UDC related information of the second base station is information about the capability of the second base station according to the terminal And the capability information of the second base station is determined.

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 method is taken as an example, and a method for starting a UDC between a terminal and a base station is described in detail.

Both the terminal and the base station supporting the UDC function have downloaded the profile information, and the profile information 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 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 supported site. There is a profile number; the network selects a profile supported by both parties according to the profile supported by the terminal and the profile supported by the terminal, and stores and indicates to the terminal; after receiving the terminal, the terminal can use the corresponding profile for uplink data compression, and the network can be based on The format of the data packet sent by the terminal and the profile used by the terminal are decompressed, and the data is delivered to the upper layer after decompression.

Similarly, after the terminal is connected to 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 according to the capability information of the terminal and the second base station Capability information to determine UDC related information for the second base station.

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.

The capability information of the second base station includes but is not limited to: all profiles supported by the second base station, and all compressed cache 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 profiles supported by the terminal and all supported compression caches.

For example, the number of the profile supported by the terminal is 1, 6, and 7, and the number of the supported compressed cache modes is A and D; the number of profiles supported by the second base station is 1, 2, 3, 4, 5, and 6, The supported compression cache numbers are A, B, C, E, F, and H; then the second base station slave station and the second base station support the profile numbers 1, 6, and the terminal and the second base station. In the number A of the compressed cache method supported, one of the UDC related information as the second base station is selected, which may be a profile method or a compression cache method.

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

Mode 1, the second base station acquires capability information of the terminal actively reported by the terminal.

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

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 through the RRC reconfiguration complete message; After the RRC reconfiguration complete message is sent to the second base station, the broadcast message of the second base station is received, and the capability information of the terminal is reported to the second base station; wherein the terminal provides a separate report message to the second The base station reports the capability information of the terminal.

Mode 2: The second base station acquires capability information of the terminal from a Mobility Management Entity (MME).

It should be noted that the method for the second base station to obtain the capability information of the terminal from the MME is a prior art method, 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 transmits the UDC related information of the second base station to the terminal.

Optionally, the second base station sends the UDC related information to the second base station by using an RRC reconfiguration message; that is, the RRC reconfiguration message has the UDC related information of the second base station.

Correspondingly, the terminal receives an RRC reconfiguration message including the 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: a profile number, and an indication information using a compressed cache method.

After receiving the UDC related information of the second base station, the terminal may determine the compression method 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 the 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 the indication information using the compressed cache mode, the terminal determines to perform data compression processing by using a compression cache method 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 the new cell; Step 1002: The terminal receives the broadcast message of the second base station; wherein the broadcast message includes the second The base station supports the UDC function; in step 1003, the terminal sends an RRC reconfiguration complete message including the capability information of the terminal to the second base station; in step 1004, the second base station determines the first information 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; in step 1005, the second base station sends an RRC reconfiguration message including the UDC related information of the second base station to the terminal; in step 1006, the terminal determines the compression mode according to the UDC related information of the second base station. , and The data is compressed according to the compression method.

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 a broadcast message of the second base station; wherein the broadcast message includes the second base station supporting the UDC function; in step 1104, the terminal reports the capability information of the terminal to the second base station; and step 1105: the second base station according to the capability information of the terminal And the capability information of the second base station determines the UDC related information of the second base station; in 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 according to the The UDC related information of the two base stations determines the compression mode, and compresses the data according to the compression method.

As shown in FIG. 12, the first base station in the embodiment of the present invention includes: a first sending module 1201, configured to send a handover request message to a second base station; where the handover request message includes uplink data compression 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 is switched to the second base station. The data compression processing is performed by using a compression method determined by the UDC related information of the second base station; wherein the UDC related information of the second base station is determined according to the UDC related information of the terminal.

Optionally, 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; compressed cache currently used by the terminal The type of method.

Optionally, the UDC related information of the second base station is part or all of the following information: profile information, type of compressed cache mode, and indication information using an empty compressed cache.

Optionally, the first sending module 1201 is further configured to: if the UDC related information of the second base station is a type of the compressed cache mode, according to the received second base returned by the second base station The UDC related information of the station, after transmitting the UDC configuration information to the terminal, forwarding the compressed cached data corresponding to the terminal stored by the first base station to the second base station, so that the second base station according to the Compress the cached data to decompress the data of the terminal.

Optionally, the first sending module 1201 is configured to: if the UDC related information of the second base station is of a type of the compressed cache mode, send, to the second base station, the first base station storage And a switching request message for compressing the cached data corresponding to the terminal, so that when the second base station supports the UDC function, decompressing the data of the terminal according to the compressed cached data.

Optionally, the first sending module 1201 is further configured to: 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, after receiving the release message of the second base station, the terminal releases the compressed cache data corresponding to the terminal.

Optionally, the first sending module 1201 is further configured to: after sending the handover request message to the second base station, send the received UDC related information of the second base station returned by the second base station to the Before the terminal, determining 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; or determining the radio resource control RRC reconfiguration in the handover confirmation message sent by the second base station There are UDC related information in the message.

Optionally, the first sending module 1201 is configured to send the RRC reconfiguration message in the handover confirmation message to the terminal, where the RRC reconfiguration message includes the UDC related information of the second base station. .

Optionally, the first sending module 1201 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, Sending, by the terminal, the RRC reconfiguration message to the terminal, so that the terminal determines to stop using the UDC function after switching to the second base station when determining that the received RRC reconfiguration message does not include the UDC configuration information; or if determining 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, and the RRC reconfiguration message in the handover confirmation message is modified, and the terminal is indicated by the modified RRC reconfiguration message. Stop using the UDC function after switching to the second base station.

As shown in FIG. 13, the first type of second base station in the embodiment of the present invention includes: a second receiving module 1301, configured to receive a handover request message sent by the first base station, according to The UDC related information of the terminal in the handover request message is used to determine the UDC related information of the second base station, and 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 the terminal performs the compression method determined by the UDC related information of the second base station after switching to the second base station. Data compression processing.

Optionally, the second receiving module 1301 is configured to: if the UDC related information of the terminal is profile information supported by the terminal, select, according to profile information supported by the terminal and profile information supported by the second base station, a profile supported by the terminal and the second base station, 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 current for the terminal Using the profile information, when determining the profile currently supported by the terminal, 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 compression currently used by the terminal. The type of the cache mode, when determining the support for the currently used compression cache mode, the type of the compression cache currently used by the terminal is used as the UDC related information of the second base station; or if the terminal's UDC related information For the capability information of the terminal, determining the UDC correlation of the second base station according to the capability information of the terminal and the capability information of the second base station News.

Optionally, the second sending module 1302 is configured to: send 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 1302 is further configured to: after sending the UDC related information of the second base station to the first base station, after receiving the RRC reconfiguration complete message of the terminal, to the first The base station sends a release message, so that after receiving the release message, the first base station releases the data in the compressed cache corresponding to the terminal.

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 sent by the first base station; wherein, the second The UDC related information of the 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; the first determining module 1402 is configured to use the UDC related information according to the second base station. Determining a compression mode adopted after switching to the second base station, and compressing the data according to the compression mode.

Optionally, the first determining module 1402 is configured to: if the UDC related information of the second base station is profile information, determine to use the profile corresponding to the profile information to perform data after switching to the second base station Compressing processing; or if the UDC related information of the second base station is of a compression cache type, determining to compress the data by using a compression cache corresponding to the type of the compressed cache mode after switching to the second base station Processing; or if the UDC related information of the second base station is an indication information that uses an empty compressed cache, determining to perform data compression processing by using an empty compressed cache after switching to the second base station.

Optionally, the third receiving module 1401 is specifically configured to: receive an RRC reconfiguration message that includes UDC related information of the second base station.

Optionally, the third receiving module 1401 is further configured to: receive the UDC related information of the second base station in the received RRC reconfiguration message, and determine to stop using the UDC function after switching to the second base station. Or receiving the 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.

As shown in FIG. 15, the second second base station in the embodiment of the present invention includes: a second determining module 1501, configured to: after the terminal switches to the second base station, according to the capability information of the terminal, and the second The capability information of the base station determines the UDC related information of 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 adopts the second The compression method determined by the UDC related information of the base station performs data compression processing.

Optionally, the second determining module 1501 is configured to: acquire capability information of the terminal according to part or all of the following manners: acquire the capability of the terminal from the received RRC reconfiguration complete message sent by the terminal. Information; receiving capability information of the terminal reported by the terminal; and acquiring capability information of the terminal from the mobility management entity MME.

Optionally, the UDC related information of the second base station is part of the following information. Minute or all: profile information, instructions for using the compressed cache method.

Optionally, the third sending module 1502 is configured to send an RRC reconfiguration message to the terminal, where the RRC reconfiguration message has UDC related information of the second base station.

As shown in FIG. 16, the second terminal of the embodiment of the present invention includes: a fourth receiving module 1601, configured to receive, after switching to the second base station, the second base station that is sent by the second base station The UDC related information, wherein the UDC related information of the second base station is determined by the second base station according to the capability information of the terminal and the capability information of the second base station; and the third determining module 1602 is configured to The UDC related information of the second base station determines the compression mode, and compresses the data according to the compression method.

Optionally, the fourth receiving module 1601 is further configured to: before receiving the UDC related information of the second base station that is sent by the second base station, report the information to the second base station by using an RRC reconfiguration complete message. The capability information of the terminal; or after the handover, the capability information of the terminal is reported to the second base station.

Optionally, the third determining module 1602 is configured to: if the UDC related information of the second base station is profile information, determine to use the profile corresponding to the profile information to perform data compression after switching to the second base station Processing; or if the UDC related information of the second base station is the indication information using the compressed cache mode, determining to perform data compression processing by using a compression cache after switching to the second base station.

Optionally, the fourth receiving module 1601 is specifically configured to: Receiving an RRC reconfiguration message including UDC related information of the second base station.

As shown in FIG. 17, a second base station according to an embodiment of the present invention includes a processor 1701 for transmitting and receiving data through the transceiver 1702, and reading a program in the memory 1704, and performing the following process: transmitting and receiving The machine 1702 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, and the second base station returned by the second base station received by the transceiver 1702 The UDC related information is sent to the terminal, so that the terminal performs data compression processing by using a compression method determined by the UDC related information of the second base station after switching to the second base station; wherein, the UDC of the second base station The related information is determined based on the UDC related information of the terminal.

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

Optionally, 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; compressed cache currently used by the terminal The type of method.

Optionally, the UDC related information of the second base station is part or all of the following information: profile information, type of compressed cache mode, and indication information using an empty compressed cache.

Optionally, the processor 1701 is further configured to: If the UDC related information of the second base station is the type of the compressed cache mode, according to the received UDC related information of the second base station returned by the second base station, the UDC configuration is sent to the terminal through the transceiver 1702. 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 decompresses the data of the terminal according to the compressed cached data. .

Optionally, the processor 1701 is specifically configured to: if the UDC related information of the second base station is of a type of the compressed cache mode, send, by the transceiver 1702, the first base station storage to the second base station And a switching request message for compressing the cached data corresponding to the terminal, so that when the second base station supports the UDC function, decompressing the data of the terminal according to the compressed cached data.

Optionally, the processor 1701 is further configured to: after receiving the UDC configuration information by the transceiver 1702, according to the received UDC related information of the second base station that is returned by the second base station, after receiving the UDC configuration information, After the release message of the second base station, the compressed cache data corresponding to the terminal is released.

Optionally, the processor 1701 is further configured to: after sending the handover request message to the second base station by the transceiver 1702, send the received UDC related information of the second base station that is returned by the second base station to the Before the terminal, determining 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; or determining the radio resource control RRC reconfiguration in the handover confirmation message sent by the second base station There are UDC related information in the message.

Optionally, the processor 1701 is specifically configured to: The RRC reconfiguration message in the handover confirmation message is sent to the terminal, where the RRC reconfiguration message has the UDC related information of the second base station.

Optionally, the processor 1701 is further configured to: if it is determined that the interface parameter in the handover confirmation message and the handover confirmation message do not have the UDC related information of the second base station, the 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 handover confirmation message is determined There is no UDC related information of the second base station in the interface parameter and the handover confirmation message, and the RRC reconfiguration message in the handover confirmation message is modified, and the modified RRC reconfiguration message indicates that the terminal is switching to the The UDC function is stopped after the second base station.

In FIG. 17, a busbar architecture (represented by busbar 1700), busbar 1700 can include any number of interconnected busbars and bridges, busbar 1700 would include one or more processors represented by processor 1701 and The various circuits of the memory represented by the memory 1704 are linked together. Bus 1700 can also couple 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. The bus interface 1703 provides an interface between the bus 1700 and the transceiver 1702. The 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. The data processed by the processor 1701 is transmitted over the wireless medium via the antenna 1705. Further, the antenna 1705 also receives the data and transmits the data to the processor 1701.

The processor 1701 is responsible for managing the bus 1700 and the usual processing, and may also mention For a variety of functions, including timing, peripheral interface, voltage regulation, power management and other control functions. The memory 1704 can be used to store the data used by the processor 1701 in performing the operations.

Optionally, the processor 1701 may be a central processing unit (CPU), an application integrated circuit (ASIC), a field-programmable gate array (FPGA), or Complex Programmable Logic Device (CPLD).

As shown in FIG. 18, a third second base station according to an embodiment of the present invention includes: a processor 1801, configured to send and receive data through the transceiver 1802, and read a 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 sends 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 second after switching to the second base station. The compression method determined by the UDC related information of the base station performs data compression processing.

The transceiver 1802 is configured to receive and send 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, select the terminal according to the profile information supported by the terminal and the profile information supported by the second base station. The profile supported by the second base station, the profile supported by the terminal and the second base station The information 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 determining the profile currently used by the terminal, the profile information currently used by the terminal is used as the profile information. The UDC related information of the second base station; or if the UDC related information of the terminal is the type of the compressed cache mode currently used by the terminal, when determining the support of the currently used compressed cache mode, the terminal currently uses the compression The type of the cache mode is used as the UDC related information of the second base station; or if the UDC related information of the terminal is the capability information of the terminal, determining the number 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.

Optionally, the processor 1801 is specifically configured to: add the UDC related information of the second base station to the interface parameter and the RRC reconfiguration message in the handover confirmation message, and send the same to the first base station by using the transceiver 1802; or The UDC related information of the second base station is added to the first base station through the transceiver 1802 in the RRC reconfiguration message.

Optionally, the processor 1801 is further configured to: after sending 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, the first The base station sends a release message, so that after receiving the release message, the first base station releases the data in the compressed cache corresponding to the terminal.

In FIG. 18, a busbar architecture (represented by busbar 1800), busbar 1800 can include any number of interconnected busbars and bridges, and busbar 1800 will include one or more processors represented by processor 1801 and Various circuit connections of the memory represented by the memory 1804 Together. Bus 1800 can also couple 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. The bus interface 1803 provides an interface between the bus 1800 and the 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 interface, voltage regulation, power management, and other control functions. The memory 1804 can be used to store the data used by the processor 1801 in performing the operations.

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

As shown in FIG. 19, a third terminal in the embodiment of the present invention includes: a processor 1901, configured to send and receive data through the transceiver 1902, and read a program in the memory 1904, and execute the following process: through the transceiver. The receiving, by the first base station, the UDC related information of the second 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 a 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 compressing the data according to the compression mode.

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

Optionally, the processor 1901 is specifically configured to: if the UDC related information of the second base station is profile information, determine 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 a type of the compressed cache mode, determining to perform data compression processing by using a compression cache corresponding to the type of the compressed cache mode after switching to the second base station; or The UDC related information of the second base station is an indication information that uses an empty compressed cache, and then determines to perform data compression processing by using an empty compressed cache after switching to the second base station.

Optionally, the processor 1901 is specifically configured to: receive an RRC reconfiguration message that includes UDC related information of the second base station.

Optionally, the processor 1901 is further configured to: by using the UDC related information of the second base station in the RRC reconfiguration message received by the transceiver 1902, determining to stop 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 busbar architecture (represented by busbar 1900), busbar 1900 can include any number of interconnected busbars and bridges, and busbar 1900 will include one or more processors represented by general purpose processor 1901 The various circuits of the memory represented by the memory 1904 are coupled together. Bus 1900 can also couple various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, This article will not be further described. The bus interface 1903 provides an interface between the bus 1900 and the 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, as described above for running the general operating system. The memory 1904 can be used to store the 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: a processor 2001, configured to send and receive data through the transceiver 2002, and read a 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 the capability information of the terminal and the capability information of the second base station; and correlating the UDC of the second base station by the transceiver 2002 The information is sent to the terminal, so that the terminal performs data compression processing using a compression method determined by the UDC related information of the second base station.

Optionally, the processor 2001 is configured to: acquire capability information of the terminal according to part or all of the following manners: obtain capability information of the terminal from the received RRC reconfiguration complete message sent by the terminal; The capability information of the terminal reported by the terminal; The capability information of the terminal is obtained from the mobility management entity MME.

Optionally, the UDC related information of the second base station is part or all of the following information: profile information, and instructions for using a compressed cache method.

Optionally, the processor 2001 is specifically configured to: send an RRC reconfiguration message to the terminal, where the RRC reconfiguration message has UDC related information of the second base station.

In FIG. 20, a busbar architecture (represented by busbar 2000), busbar 2000 can include any number of interconnected busbars and bridges, and busbar 2000 will include one or more processors represented by processor 2001 and The various circuits of the memory represented by the memory 2004 are linked together. Busbar 2000 can also couple 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. The bus interface interface 2003 provides an interface between the busbar 2000 and the 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 busbar 2000 and the usual processing, and can also provide various functions including timing, peripheral interface, voltage regulation, power management, and other control functions. The memory 2004 can be used to store the 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: a processor 2101, configured to send and receive data through the transceiver 2102, and read a program in the memory 2104, and perform the following process: After the second base station, the UDC related information of the second base station sent by the second base station is received by the transceiver 2102; wherein the UDC related information of the second base station is the capability of the second base station according to the terminal The information and the capability information of the second base station are determined; the compression mode is determined according to the UDC related information of the second base station, and the data is compressed according to the compression mode.

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

Optionally, the processor 2101 is further configured to: before receiving the UDC related information of the second base station sent by the second base station, report the capability information of the terminal to the second base station by using an RRC reconfiguration complete message. Or, after switching to, report the capability information of the terminal to the second base station.

Optionally, the processor 2101 is specifically configured to: if the UDC related information of the second base station is profile information, determine to use the profile corresponding to the profile information to perform data compression processing after switching to the second base station; or The UDC related information of the second base station is an indication information using a compressed cache mode, and determines to perform data compression processing by using a compression cache after switching to the second base station.

Optionally, the processor 2101 is specifically configured to: receive an RRC reconfiguration message that includes UDC related information of the second base station.

In Figure 21, the busbar architecture (represented by busbar 2100), busbar 2100 can include any number of interconnected bus bars and bridges that will include various circuits including one or more processors represented by general purpose processor 2101 and memory represented by memory 2104. Bus 2100 can also couple 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. The bus interface 2103 provides an interface between the bus 2100 and the 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, as described above for running the general operating system. The memory 2104 can be used to store the data used by the processor 2101 in performing the 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 the uplink data compression UDC of the terminal. relevant information; 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 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; wherein the UDC related information of the second base station is determined according to the UDC related information of the terminal.

Optionally, 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; compressed cache currently used by the terminal The type of method.

Optionally, the UDC related information of the second base station is part or all of the following information: profile information, type of compressed cache mode, and indication information using an empty compressed cache.

Optionally, if the UDC related information of the second base station is the type of the compressed cache mode, 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 method includes: the first base station forwarding, by the first base station, the compressed cache data corresponding to the terminal to the second base station, so that the second base station is configured according to the second base station The compressed cache data decompresses the data of the terminal.

Optionally, if the UDC related information of the second base station is the type of the compressed cache mode, the first base station sends a handover request message to the second base station, where the first base station sends the second base station to the second base station. The station transmits the first base station stored with the terminal And correspondingly switching the request message of the cached data, 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, 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: the first base station receives the After the release message of the second base station, the compressed cache data corresponding to the terminal is released.

Optionally, after the first base station sends the handover request message to the second base station, sending the received UDC related information of the second base station returned 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 the UDC related information of the second base station; or the first base station determines the handover confirmation message sent by the second base station There are UDC related information in the RRC reconfiguration message.

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 adds the RRC in the handover confirmation message. The configuration message is sent to the terminal, where the RRC reconfiguration message has the UDC related information of the second base station.

Optionally, the method further includes: 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 confirms the handover The RRC reconfiguration message in the message is sent 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 after switching to the second base station. Using the UDC function; 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 RRC in the handover confirmation message The reconfiguration message is modified, and the modified RRC reconfiguration message indicates that the terminal stops using the UDC function after switching to the second base station.

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. 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 a handover request message sent by the first base station, according to the UDC related information of the terminal in the handover request message, Determining UDC related information of the second base station; step 2302, the second base station transmitting the UDC related information of the second base station to the first base station, so that the first base station is to use 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 method determined by the UDC related information of the second base station after switching to the second base station.

Optionally, the second base station determines, according to the UDC related information of the terminal in the handover request message, the UDC related information of the second base station, including: if the UDC related information of the terminal is profile information supported by the terminal, The second base station selects according to profile information supported by the terminal and profile information supported by the second base station a profile supported by the terminal and the second base station, 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 current for the terminal Using the profile information, when the second base station determines 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; or if the UDC related information of the terminal is the The type of the compression cache mode currently used by the terminal. When the second base station determines to support the currently used compression cache mode, the type of the compression cache mode currently used by the terminal is used as the UDC correlation of the second base station. Information; 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 second base station sends the UDC related information of the second base station to the first base station, where the second base station adds the UDC related information of the second base station to the handover confirmation message. The interface parameter and the RRC reconfiguration message are sent to the first base station; or the second base station adds the UDC related information of the second base station to the RRC reconfiguration message and sends the information to the first base station.

Optionally, 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 the The first base station sends a release message, so that after receiving the release message, the first base station releases the data in the compressed cache corresponding to the terminal.

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. 24, the method for maintaining the continuity of the UDC function in the embodiment of the present invention includes: Step 2401: The terminal receives UDC related information of the second base station sent by the first base station; wherein, the UDC of the second base station The related information 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 to switch to the second according to the UDC related information of the second base station. The compression method adopted after the base station, and the data is compressed according to the compression method.

Optionally, the terminal determines, according to the UDC related information of the second base station, a compression manner that is used after switching to the second base station, and includes: if the UDC related information of the second base station is profile information, The terminal determines to use the profile corresponding to the profile information to perform data compression processing after switching to the second base station; or if the UDC related information of the second base station is of a compression cache type, the terminal determines to switch to the After the second base station, the data compression processing is performed by using a compression cache corresponding to the type of the compressed cache mode; or if the UDC related information of the second base station is an indication information using an empty compressed cache, the terminal determines After switching to the second base station, the data compression processing is performed by using an empty compression cache.

Optionally, the terminal receives the UDC related information of the second base station that is sent by the first base station, and includes: the terminal receives an RRC reconfiguration message that includes the UDC related information of the second base station.

Optionally, the method further includes: 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; or the terminal receives 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.

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 according to the capability information of the terminal, and the second base station Capability information, determining UDC related information of the second base station; step 2502, the second base station transmitting the UDC related information of the second base station to the terminal, so that the terminal adopts the UDC by the second base station The compression method determined by the related information is used for data compression processing.

Optionally, the second base station obtains the part according to part or all of the following manners. The capability information of the terminal: the second base station acquires the capability information of the terminal from the received RRC reconfiguration complete message sent by the terminal; the second base station receives the 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.

Optionally, the UDC related information of the second base station is part or all of the following information: profile information, and instructions for using a compressed cache method.

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

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. 26, the method for maintaining the continuity of the UDC function in the embodiment of the present invention includes: Step 2601, after receiving the handover to the second base station, the terminal receives the UDC related information of the second base station sent by the second base station; The UDC related information of the second base station is determined by the second base station according to the capability information of the terminal and the capability information of the second base station; step 2602, the terminal is based on the UDC related information of the second base station. Determine the compression method, The data is compressed according to the compression method.

Optionally, before receiving, by the second base station, the UDC related information of the second base station, the terminal further includes: the terminal reporting 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, the compression mode, including: if the UDC related information of the second base station is profile information, the terminal determines to adopt the switch after switching to the second base station The profile corresponding to the profile information is subjected to data compression processing; or if the UDC related information of the second base station is the indication information using the compressed cache mode, the terminal determines to adopt a compression cache method after switching to the second base station Data compression processing.

Optionally, the terminal receives the UDC related information of the second base station that is sent by the second base station, and includes: the terminal receives an RRC reconfiguration message that includes the UDC related information of the second base station.

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

The present invention is directed to a method, apparatus (system), and A flowchart and/or block diagram of a computer program product is described. 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, a special purpose computer, an embedded processor or other programmable data processing device to produce a machine for executing instructions by a processor of a computer or other programmable data processing device Means are provided for implementing the functions specified in one or more of the flow or in one or more blocks of the flow chart.

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

These computer program instructions can also be loaded onto a computer or other programmable data processing device to perform a series of operational steps on a computer or other programmable device to produce computer-implemented processing on a computer or other programmable device. The instructions executed above provide steps for implementing the functions specified in one or more blocks of the flowchart or in a block or blocks of the flowchart.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the < Therefore, the scope of the appended claims is intended to be construed as a

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, if the embodiment of the invention The modifications and variations are intended to be included within the scope of the present invention and the equivalents thereof.

Claims (22)

A method for maintaining continuity of an uplink data compression UDC function, the method comprising: sending, by a first base station, a handover request message to a second base station; wherein the handover request message includes UDC related information of the terminal; Determining, by the base station, 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 receives the 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 the 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; and if the first base station determines that the second base station does not have the UDC related information in the handover confirmation message, the first base station in the handover confirmation message The RRC reconfiguration message is modified, and the modified RRC reconfiguration message indicates that the terminal stops using the UDC function after switching to the second base station. The method for maintaining the continuity of the UDC function of the uplink data, as described in claim 1, wherein the UDC related information of the terminal is part or all of the following information: the compressed cache profile profile information supported by the terminal; Profile information used; capability information of the terminal; type of compression cache currently used by the terminal. The method for maintaining the continuity of the UDC function of the uplink data according to claim 1, wherein the UDC related information of the second base station is part or all of the following information: profile information, type of compressed cache mode, and use of space The information of the compression cache. The method for maintaining the continuity of the UDC function of the uplink data according to claim 3, wherein if the UDC related information of the second base station is the compressed cache mode number, the first base station receives the second The UDC related information of the second base station returned by the base station, after the UDC configuration information is sent to the terminal, the method further includes: the first base station forwarding the compressed cache data corresponding to the terminal stored by the first base station Giving the second base station, so that the second base station decompresses the data of the terminal according to the compressed cached data. The method for maintaining the continuity of the UDC function of the uplink data according to claim 3, wherein if the UDC related information of the second base station is the compressed cache mode number, the first base station sends a handover to the second base station. The request message includes: the first base station transmitting, to the second base station, a handover request message including the compressed cache data corresponding to the terminal stored by the first base station, so that the second base station supports the UDC In the function, the data of the terminal is decompressed according to the data of the compressed cache. The method for maintaining the continuity of the UDC function of the uplink data according to claim 4 or 5, wherein the first base station transmits the UDC related information of the second base station returned by the second base station to the After the terminal sends the UDC configuration information, the method 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. The method for maintaining the continuity of the uplink data compression UDC function according to any one of claims 1 to 5, wherein the first base station correlates the received UDC of the second base station returned by the second base station The information is sent to the terminal, and the first base station sends the RRC reconfiguration message in the handover confirmation message to the terminal, where the RRC reconfiguration message has the UDC related information of the second base station. A method for maintaining continuity of an uplink data compression UDC function, the method comprising: receiving, by a second base station, a handover request message sent by a first base station, and determining, according to UDC related information of the terminal in the handover request message, UDC related information of the second base station; The second base station adds the UDC related information of the second base station to the first base station in an RRC reconfiguration message, so that the first base station sends the UDC related information of the second base station to the first base station. a 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; and if the second base station does not carry the handover confirmation message The UDC related information of the second base station triggers the first base station to modify the RRC reconfiguration message in the handover confirmation message, and the modified RRC reconfiguration message indicates that the terminal is after switching to the second base station. Stop using the UDC feature. The method for maintaining the continuity of the UDC function, as described in claim 8, wherein the second base station determines the UDC related information of the second base station according to the UDC related information of the terminal in the handover request message, including: The UDC related information of the terminal is the profile information supported by the terminal, and 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. 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, the second base station determines the support When the profile currently used by the terminal is used, 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 compressed cache mode currently used by the terminal, the first When the second base station determines to support the currently used compressed cache mode, the type of the compressed cache mode currently used by the terminal is used as the second base. The UDC related information of the terminal; or if the UDC related information of the terminal is the capability information of the terminal, the second base station determines the UDC of the second base station according to the capability information of the terminal and the capability information of the second base station relevant information. The method for maintaining the continuity of the UDC function according to claim 8, wherein after the second base station transmits the UDC related information of the second base station to the first base station, the method further includes: receiving, by the second base station After the RRC reconfiguration complete message to the terminal, to the first base station Sending a release message, so that after receiving the release message, the first base station releases the data in the compressed cache corresponding to the terminal. A method for maintaining continuity of an uplink data compression UDC function, the method comprising: receiving, by the terminal, an RRC reconfiguration message that is sent by the first base station and including UDC related information of the second base station; wherein, the second The UDC related information of the 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; the terminal determines to switch to the first according to the UDC related information of the second base station. a compression method adopted after the second base station, and compressing the data according to the compression manner; and if the RRC reconfiguration message received by the terminal includes indicating that the terminal stops using the UDC function after switching to the second base station The information is that the terminal stops using the UDC function after switching to the second base station, and the instruction indicates that the terminal stops using the information of the UDC function after switching to the second base station, and the first base station does not receive the information. After the UDC related information of the second base station, the RRC reconfiguration message is modified. The method for maintaining the continuity of the UDC function, as described in claim 11, wherein the terminal determines, according to the UDC related information of the second base station, a compression manner 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 use the profile corresponding to the profile information to perform data compression processing after switching to the second base station; or if the UDC related information of the second base station is compression The type of the cache mode, the terminal determines to perform data compression processing by using a compression cache corresponding to the type of the compressed cache mode after switching to the second base station; or if the second base station has UDC related information In order to use the indication information of the empty compression cache, the terminal determines to perform data compression processing by using an empty compression cache after switching to the second base station. A first base station, comprising at least a processor and a transceiver, wherein The processor is configured to send and receive data through the transceiver, and read the program in the memory, and execute the following process: sending, by the transceiver, a handover request message to the second base station; where the handover request message includes the uplink of the terminal Data compression UDC related information; determining UDC related information in the radio resource control RRC reconfiguration message in the handover confirmation message sent by the second base station; and returning the second base station returned by the second base station through the transceiver The UDC related information 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; wherein, the second base station The UDC related information is determined according to the UDC related information of the terminal; and if it is confirmed that the UDC related information of the second base station is not included in the handover confirmation message, the RRC reconfiguration message in the acknowledgement message is modified, and is sent and received. Sending the modified RRC reconfiguration message to indicate that the terminal stops using the UDC function after switching to the second base station; the transceiver For receiving and transmitting information under the control of the processor. The first base station according to claim 13, 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 of the terminal Information; the type of compression cache currently used by the terminal. The first base station according to claim 13, wherein the UDC related information of the second base station is part or all of the following information: profile information, type of compressed cache mode, and indication of using an empty compressed cache News. The first base station according to claim 15, wherein the processor is further configured to: if the UDC related information of the second base station is of a type of the compressed cache mode, return according to the received second base station After the UDC configuration information is sent to the terminal by the transceiver, the compressed cache data corresponding to the terminal stored in the first base station is forwarded to the second base station, Making the second base station according to the compression cache The data is decompressed from the data of the terminal. The first base station according to claim 15, wherein the processor is specifically configured to: if the UDC related information of the second base station is of a type of the compressed cache mode, send the packet to the second base station by using a transceiver a switching request message including the compressed cached data corresponding to the terminal stored by the first base station, so that when the second base station supports the UDC function, decompressing the data of the terminal according to the compressed cached data . The first base station according to any one of claims 16 or 17, wherein the processor is further configured to: transmit and receive according to the received UDC related information of the second base station returned by the second base station After the UDC configuration information is sent to the terminal, after receiving the release message of the second base station, the device releases the compressed cache data corresponding to the terminal. A second base station, comprising at least a processor and a transceiver, wherein the processor is configured to send and receive data through the transceiver, and read a program in the memory, and execute the following process: receiving through the transceiver The handover request message sent by the first base station determines the UDC related information of the second base station according to the UDC related information of the terminal in the handover request message; and adds the UDC related information of the second base station to the handover confirmation message. The RRC reconfiguration message is sent to the first base station by the transceiver, so that the first base station sends the UDC related information of the second base station to the terminal, so that the terminal is switched to the second base. The data compression processing is performed by using a compression method determined by the UDC related information of the second base station; and if the UDC related information of the second base station is not carried in the handover confirmation message, the first base station pair is triggered. The RRC reconfiguration message in the acknowledgment message is modified, by indicating to the modified RRC reconfiguration message that the terminal stops after switching to the second base station Use UDC function; transceiver for receiving and transmitting information under the control of the processor. The second base station according to claim 19, wherein the processor is specifically configured to: if the UDC related information of the terminal is profile information supported by the terminal, according to the terminal support The profile information of the assistance and the profile information supported by the second base station, the information selects a profile supported by the terminal and the second base station, and the profile information supported by the terminal and the second base station is used as the second base station The information about the UDC; or if the UDC related information of the terminal is the profile information currently used by the terminal, when determining the profile currently used by the terminal, the profile information currently used by the terminal is used as the UDC of the second base station. Information; or if the UDC related information of the terminal is the type of the compressed cache mode currently used by the terminal, when determining the supported compressed cache mode, the type of the compressed cache mode currently used by the terminal is used as the information The UDC related information of the second base station; or if the UDC related information of the terminal is the capability information of the terminal, 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 . A terminal for maintaining continuity of an uplink data compression UDC function, comprising at least a processor and a transceiver, wherein the processor is configured to send and receive data through the transceiver, and read a program in the memory, and execute the following The RRC reconfiguration message that is sent by the first base station and includes the UDC related information of the second base station, where the UDC related information of the second base station is the second base station according to the terminal The UDC related information is determined and sent to the first base station; according to the UDC related information of the second base station, determining a compression mode adopted after switching to the second base station, and compressing the data according to the compression mode Processing; and if 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, determining to stop using the UDC after switching to the second base station Function, the terminal stops using the information of the UDC function after switching to the second base station, and the first base station does not receive the UDC phase of the second base station After the information, the RRC reconfiguration message after modification obtained; transceiver for receiving and transmitting information under the control of the processor. The terminal for maintaining the continuity of the UDC function of the uplink data as described in claim 21, wherein The processor is specifically configured to: if the UDC related information of the second base station is profile information, determine, after switching to the second base station, use the profile corresponding to the profile information to perform data compression processing; or if the second base The UDC related information of the station is a type of the compression cache mode, and it is determined that the data compression processing is performed by using a compression cache corresponding to the type of the compression cache mode after switching to the second base station; or if the second base station The UDC related information is an indication information using an empty compressed cache, and then determining to perform data compression processing by using an empty compressed cache after switching to the second base station; and receiving the RRC reconfiguration message by the transceiver The information includes 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.