WO2013177934A1

WO2013177934A1 - Capability synchronization method, device and communication system

Info

Publication number: WO2013177934A1
Application number: PCT/CN2012/087960
Authority: WO
Inventors: 王向阳
Original assignee: 华为终端有限公司
Priority date: 2012-05-30
Filing date: 2012-12-31
Publication date: 2013-12-05
Also published as: CN102711236A; CN102711236B

Abstract

Provided are a capability synchronization method and device and a communication system, which relate to the field of communications and can solve the problems that capability synchronization cannot be conducted between a network device and a user terminal. The method comprises: a user terminal packeting the supported capability information to obtain packet capability information, the packet capability information comprising first packet capability information and second packet capability information; the user terminal reporting a resource request message to a network device, the resource request message comprising the packet capability information, so that the network device selects a service resource according to the packet capability information; the user terminal receiving a first service resource selected according to the first packet capability information which is allocated by the network device; and when the network state changes, the user terminal receiving a second service resource selected according to the second packet capability information which is allocated by the network device. The embodiments of the present invention are used for conducting capability synchronization between the network device and the user terminal.

Description

Capability synchronization method, device and communication system

The present invention relates to the field of communications, and in particular, to a capability synchronization method, device, and communication system.

Background technique

With the continuous advancement of mobile communication technology, mobile communication systems have experienced GSM (global system for mobile communications) to GPRS (general packet radio service) / EDGE (enhanced data rate for GSM) Evolution, enhanced data rate GSM evolution technology), to the rapid development of UMTS (universal mobile telecommunications system) / LTE (long term evolution), the development of mobile communication systems requires user terminals Improving constantly. In practical applications, the capabilities supported by different user terminals may be different under various standards. The capabilities supported by the terminal may include the encoding mode supported by the terminal, the multi-slot type, and HSDPA (high speed downlink packet access, High-speed downlink packet access capability level, HSUPA (high speed uplink packet access) capability level, frequency band information, and handover capability supported on the corresponding frequency band. The network device will provide the necessary resources to conduct business based on the capabilities supported by the user terminal. When the capabilities supported by the user terminal change or the resources of the network device change, the effective capability synchronization between the user terminal and the network device will be the key to the continuous operation of the service.

In order to synchronize the capability between the user terminal and the network device, a signaling (UE CAPABILITY INFORMATION) is defined in the 25.331 protocol for transmitting the capability information of the user terminal. The user terminal reporting capability information is usually due to the ability of the network device to actively query the user terminal or when the user terminal's capability changes. The shortcoming of the capability synchronization method is that when the user terminal is in a DCH (dedicated channel) state or a FACH (forward access channel) state, if the user terminal performs a handover operation, Once the capabilities supported by the user terminal change or the resources of the network device change, the capability synchronization between the network device and the user terminal will not be possible.

Summary of the invention Embodiments of the present invention provide a capability synchronization method, device, and communication system, which can solve the problem that capability synchronization cannot be performed between a network device and a user terminal.

In order to achieve the above object, embodiments of the present invention use the following technical solutions:

An aspect of the present invention provides a capability synchronization method, including: a user terminal grouping the supported capability information to obtain packet capability information, where the packet capability information includes first packet capability information and second packet capability information. .

The user terminal reports a resource request message to the network device, where the resource request message includes the packet capability information, so that the network device selects a service resource according to the packet capability information.

The user terminal receives the first service resource selected by the network device according to the first packet capability information.

When the network status changes, the user terminal receives the second service resource selected by the network device according to the second grouping capability information.

According to another aspect of the embodiments of the present invention, a capability synchronization method is provided, including: receiving, by a network device, a resource request message reported by a user terminal, where the resource request message includes packet capability information of the user terminal, where the packet capability information includes First packet capability information and second packet capability information.

The network device selects the first service resource according to the first grouping capability information. The network device allocates the first service resource to the user terminal.

When the network status changes, the network device selects the second service resource according to the second grouping capability information.

The network device allocates the second service resource to the user terminal.

Another aspect of the embodiments of the present invention provides a user terminal, including:

And a grouping unit, configured to group the supported capability information to obtain packet capability information, where the packet capability information includes first packet capability information and second packet capability information.

And an information sending unit, configured to report a resource request message to the network device, where the resource request message includes the grouping capability information, so that the network device selects a service resource according to the grouping capability information.

And a resource receiving unit, configured to receive, by the network device, a first service resource selected according to the first grouping capability information. When the network status changes, the resource receiving unit is further configured to receive, by the network device, a second service resource that is selected according to the second grouping capability information.

Another aspect of the embodiments of the present invention provides a network device, including:

The information receiving unit is configured to receive a resource request message reported by the user terminal, where the resource request message includes packet capability information of the user terminal, where the packet capability information includes first packet capability information and second packet capability information.

And a selecting unit, configured to select the first service resource according to the first grouping capability information. And a resource allocation unit, configured to allocate the selected first service resource to the user terminal.

When the network status changes, the selecting unit is further configured to select the second service resource according to the second grouping capability information. Correspondingly, the resource allocating unit is further configured to allocate the second service resource to the User terminal.

In still another aspect of the embodiments of the present invention, a communication system is provided, including a user terminal and a network device.

The user terminal is configured to group the supported capability information to obtain packet capability information, where the packet capability information includes first packet capability information and second packet capability information, and report a resource request message to the network device, where the resource request is The message includes the packet capability information, so that the network device selects a service resource according to the packet capability information; and receives a first service resource that is selected by the network device according to the first packet capability information; when the network state When the change occurs, the second service resource selected according to the second grouping capability information allocated by the network device is received.

The network device is configured to receive a resource request message reported by the user terminal, where the resource request message includes packet capability information of the user terminal, where the packet capability information includes first packet capability information and second packet capability information; The first packet capability information is used to select the first service resource; the selected first service resource is allocated to the user terminal; when the network state changes, the second service resource is selected according to the second packet capability information; Allocating the second service resource to the user terminal; where the service resource includes the first service resource and the second service resource.

The capability synchronization method, device, and communication system provided by the embodiment of the present invention, the user terminal groups the supported capability information to obtain the packet capability information, and carries the packet capability information when reporting the resource request message to the network device, so that the network device can The group can The force information selects a suitable service resource, and the user terminal receives the service resource selected by the network device according to the grouping capability information. If the user terminal reports multiple sets of capability information, when the user terminal is in the DCH state or the FACH state, if the network status changes, the network device may reselect the service resource suitable for the user terminal capability according to the packet capability information, and allocate the service resource to the user terminal. Therefore, the capability synchronization between the user terminal and the network device is realized, and the problem that the capability cannot be synchronized between the network device and the user terminal is solved.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic flowchart of a capability synchronization method according to an embodiment of the present invention; FIG. 2 is a schematic flowchart of another capability synchronization method according to an embodiment of the present invention; FIG. 3 is still another capability synchronization method according to an embodiment of the present invention; Schematic diagram of the signaling process;

4 is a schematic structural diagram of a user equipment according to an embodiment of the present invention; FIG. 5 is a schematic structural diagram of a network device according to an embodiment of the present invention; FIG. 6 is a schematic structural diagram of a communication system according to an embodiment of the present invention; .

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The capability synchronization method provided by the embodiment of the present invention is as shown in FIG. 1 , and relates to a user terminal, including:

S101. The user terminal groups the supported capability information to obtain packet capability information, where the packet capability information includes first packet capability information and second packet capability information.

The user terminal may be a wireless terminal or a wired terminal, and the wireless terminal may be Either a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device that is connected to the wireless modem. The wireless terminal can communicate with one or more core networks via a radio access network (e.g., RAN, radio access network), which can be a mobile terminal, such as a mobile phone and a computer having a mobile terminal, for example, can be portable, Pocket, handheld, computer built-in or in-vehicle mobile devices that exchange language and/or data with a wireless access network.

S102. The user terminal reports a resource request message to the network device, where the resource request message includes the packet capability information, so that the network device selects the service resource according to the packet capability information.

S103. The user terminal receives the first service resource selected by the network device according to the first grouping capability information.

S104. When the network status changes, the user terminal receives the second service resource that is reselected according to the second packet capability information that is allocated by the network device. Changes, or changes in the current capabilities of the user terminal.

In such a capability synchronization method, since the user terminal reports multiple sets of capability information, when the user terminal is in the DCH state or the FACH state, if the network state changes, the network device can reselect the capability suitable for the user terminal according to the packet capability information. The service resources are allocated to the user terminal, thereby realizing the capability synchronization between the user terminal and the network device, and solving the problem that the capability cannot be synchronized between the network device and the user terminal.

On the other hand, the capability synchronization method provided by the embodiment of the present invention is as shown in FIG. 2, and relates to a network device, including:

S201. The network device receives a resource request message reported by the user terminal, where the resource request message includes packet capability information of the user terminal, where the packet capability information includes first packet capability information and second packet capability information.

The network device may specifically include a base station or a base station controller. For example, the base station may be a base station (BTS) in GSM or CDMA, or a base station (NodeB) in WCDMA, or an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), the base station controller may be a base station controller (BSC) in GSM or CDMA, or may be a radio network controller in WCDMA (RNC, radio network) Controller), the invention is not limited.

S202. The network device selects the first service resource according to the grouping capability information.

S203. The network device allocates the selected first service resource to the user terminal.

5204. When the network status changes, the network device reselects the second service resource according to the second grouping capability information. Changes, or changes in the current capabilities of the user terminal.

S205. The network device allocates the selected second service resource to the user terminal. In the capability synchronization method provided by the embodiment of the present invention, the capability information supported by the user terminal may include at least one of an encoding mode, a multi-slot type, an HSDPA capability level, an HSUPA capability level, a frequency band information, or a switching capability supported on a corresponding frequency band. One. For example, the capability information supported by the user terminal, including the coding mode supported by the user terminal, the multi-slot type, the HSDPA capability level, and the HSUPA capability level, may be capabilities supported by the user terminal in one frequency band or multiple frequency bands. Since the network or cell switching capability supported by the user terminal in each different frequency band is also different, the capability information may further include a switching capability supported by the user terminal on a specific frequency band.

The traffic resources may include at least one of a frequency, a codeword, or a slot structure. For example, a network device in a particular frequency band can select a unique frequency from the frequency band and assign a specific codeword or time slot structure to the user terminal to establish a connection for service transmission.

According to the capability synchronization method provided by the embodiment of the present invention, the user terminal groups the supported capability information to obtain the packet capability information, and carries the packet capability information when reporting the resource request message to the network device, so that the network device selects according to the packet capability information. A suitable service resource, the user terminal receives the service resource selected by the network device according to the grouping capability information. If the user terminal reports multiple sets of capability information, when the user terminal is in the DCH state or the FACH state, if the network state changes, the network device may re-select the service resource suitable for the user terminal capability according to the packet capability information to be allocated to the user terminal, thereby The capability synchronization between the user terminal and the network device is realized, and the problem that the capability cannot be synchronized between the network device and the user terminal is solved.

The capability synchronization method provided by the embodiment of the present invention is as shown in FIG. 3, and includes:

S301. The user terminal groups the supported capability information to obtain a packet capability letter. The packet capability information includes first packet capability information and second packet capability information. For example, the first grouping capability information may include the first frequency band and capability information supported by the user terminal in the first frequency band; the second grouping capability information may include the second frequency band and the capability supported by the user terminal in the second frequency band. information.

The first frequency band and the second frequency band may be different frequency bands, or the first frequency band and the second frequency band may also be the same frequency band. The capability information may include at least one of an encoding mode, a multi-slot type, an HSDPA capability level, an HSUPA capability level, frequency band information, or a switching capability supported on a corresponding frequency band.

S302. The user terminal reports a resource request message to the network device, where the resource request message includes the packet capability information, so that the network device selects the service resource according to the packet capability information.

S303. The network device selects the first service resource according to the first grouping capability information.

For example, after receiving the packet capability information reported by the user terminal, the network device may find the first service resource that matches the first packet capability information according to a preset matching algorithm.

S304: The network device allocates the selected first service resource to the user terminal.

5305. When the network status changes, the network device stops allocating the first service resource to the user terminal. Changes, or changes in the current capabilities of the user terminal. When the network status changes, the network device may not be able to establish a connection with the user terminal. The network device stops allocating the first service resource to the user terminal to prevent the user terminal from occupying the resources of the network device unnecessarily.

S306. The network device reselects the second service resource according to the second grouping capability information. For example, when the service resource of the network device changes, or the current capability of the user terminal changes, if the network device still allocates the first service resource before the network state change to the user terminal, the network device may fail according to the network service state. The second grouping capability information is selected to be suitable for the second service resource of the changed user terminal, thereby avoiding the failure of data transmission.

S307. The network device allocates the selected second service resource to the user terminal. According to the capability synchronization method provided by the embodiment of the present invention, the user terminal groups the supported capability information to obtain the packet capability information, and carries the packet capability information when reporting the resource request message to the network device, so that the network device selects according to the packet capability information. A suitable service resource, the user terminal receives the service resource selected by the network device according to the grouping capability information. If the user terminal reports multiple sets of capability information, when the user terminal is in the DCH state or the FACH state, if the network state changes, the network device may re-select the service resource suitable for the user terminal capability according to the packet capability information to be allocated to the user terminal, thereby The capability synchronization between the user terminal and the network device is realized, and the problem that the capability cannot be synchronized between the network device and the user terminal is solved.

The following describes the capability synchronization method provided by the embodiment of the present invention by taking the example of the user terminal switching between cells in different frequency bands as an example:

The current user terminal is in the DCH state or the FACH state, and the frequency band of the cell base station where the user terminal is located is W2100. In this frequency band, the user terminal supports MIMO (multiple-input multiple-output) capability, and the existing one frequency band is W900. The inter-frequency cell, and the signal quality of the W900 inter-frequency cell is better than W2100, which will trigger the user terminal to switch to the W900 inter-frequency cell base station, but the user terminal does not support MIMO in the W900 band. If the user terminal switches to the inter-frequency cell of the W900, the base station still configures the MIMO resource to the user terminal, which will cause the data transmission to fail.

The user terminal groups the supported capability information to obtain packet capability information. The first grouping capability information is a capability set of the user terminal in the W2100 frequency band, and the capability set includes information that the user terminal supports the MIMO capability in the W2100 frequency band, and the second packet capability information is a capability set of the user terminal in the W900 frequency band. The concentration includes information that the user terminal does not support the MIMO capability in the W900 band.

The user terminal reports a resource request message to the W2100-band cell base station, where the resource request message includes the packet capability information, so that the W2100-band cell base station selects the service resource according to the packet capability information. For example, the user terminal may carry the packet capability information in an RRC (radio resource control protocol) connection installation complete message.

Since the current base station is a W2100-band cell base station, after receiving the packet capability information sent by the user terminal, the base station only needs to match the first packet capability information indicating the capability of the user terminal in the W2100 frequency band, according to the first packet capability. Information selects the first business resource. The first service resource includes a MIMO resource. The W2100-band cell base station allocates the selected first service resource to the user terminal. For example, the W2100 band cell base station may allocate the first service resource to the user terminal in the radio bearer setup message.

When the signal quality of the inter-frequency cell with the frequency band W900 is better than the current cell with the W2100 frequency band, the user terminal will switch to the W900 inter-frequency cell base station, and the network status changes.

The W2100-band cell base station stops allocating the first service resource including the MIMO resource to the user terminal, thereby avoiding unnecessary occupation of resources of the W2100-band cell base station by the user terminal.

After the user terminal switches to the cell in the W900 band, the W900 band cell base station is the switched network device. Since the base station only supports the W900 frequency band, after receiving the packet capability information sent by the user terminal, the base station only needs to match the second packet capability information indicating the capability of the user terminal in the W900 frequency band, according to the second packet capability information. Select the second business resource. The second service resource does not include the MIMO resource.

The W900 band cell base station allocates the selected second service resource to the user terminal. For example, the W900 band cell base station can allocate the second service resource to the user terminal in the radio bearer reset message.

In this way, for a user terminal that does not support MIMO capability in the W900 band, after the user terminal switches from the W2100 band cell to the W900 inter-frequency cell, the W900 band cell base station does not allocate MIMO resources to the user terminal. Avoid the failure of data transmission.

The user terminal 40 provided by the embodiment of the present invention is applicable to all the steps in the foregoing method embodiment, and the detailed method steps corresponding to the user terminal 40 are described in the foregoing method embodiment, and are not detailed here. description. As shown in FIG. 4, the method includes: a grouping unit 401, configured to group the supported capability information to obtain packet capability information, where the packet capability information includes first packet capability information and second packet capability information.

The information sending unit 402 is configured to report a resource request message to the network device, where the resource request message includes the grouping capability information, so that the network device selects a service resource according to the grouping capability information.

The resource receiving unit 403 is configured to receive, by the network device, the first service resource selected according to the first packet capability information. When the network status changes, the resource receiving unit 403 is further configured to receive the second service resource that is selected by the network device and is selected according to the second grouping capability information. Changes, or changes in the current capabilities of the user terminal.

The user terminal provided by the embodiment of the present invention obtains the packet capability information by grouping the supported capability information, and carries the packet capability information when reporting the resource request message to the network device, so that the network device selects an appropriate one according to the packet capability information. The service resource, the user terminal receives the service resource selected by the network device according to the grouping capability information. If the user terminal reports multiple sets of capability information, when the user terminal is in the DCH state or the FACH state, if the network state changes, the network device may re-select the service resource suitable for the user terminal capability according to the packet capability information to be allocated to the user terminal, thereby The capability synchronization between the user terminal and the network device is realized, and the problem that the capability cannot be synchronized between the network device and the user terminal is solved.

Further, the first grouping capability information may include the first frequency band and the capability information supported by the user terminal in the first frequency band; the second grouping capability information may include the second frequency band and the user terminal supported by the second frequency band. Capability information.

The first frequency band and the second frequency band may be different frequency bands, or the first frequency band and the second frequency band may also be the same frequency band.

It should be noted that, in the embodiment of the present invention, the capability information may include at least one of an encoding mode, a multi-slot type, an HSDPA capability level, an HSUPA capability level, frequency band information, or a switching capability supported on a corresponding frequency band. The traffic resources may include at least one of a frequency band, a codeword, or a slot structure.

The network device 50 provided by the embodiment of the present invention is applicable to all the steps in the foregoing method embodiment, and the detailed method steps corresponding to the network device 50 are described in the foregoing method embodiment, and are not detailed here. description. As shown in FIG. 5, the method includes: an information receiving unit 501, configured to receive a resource request message reported by a user terminal, where the resource request message includes packet capability information of the user terminal, where the packet capability information includes first grouping capability information and a second Grouping capability information.

The selecting unit 502 is configured to select the first service resource according to the first grouping capability information. The resource allocation unit 503 is configured to allocate the selected first service resource to the user terminal. When the network status changes, the selecting unit 502 is further configured to select the second service resource according to the second grouping capability information. Correspondingly, the resource allocating unit 503 is further configured to allocate the selected second service resource to the user terminal.

The network device provided by the embodiment of the present invention, the user terminal groups the supported capability information to obtain the packet capability information, and carries the packet capability information when reporting the resource request message to the network device, so that the network device selects the appropriate according to the packet capability information. The service resource, the user terminal receives the service resource selected by the network device according to the grouping capability information. If the user terminal reports multiple sets of capability information, when the user terminal is in the DCH state or the FACH state, if the network state changes, the network device may re-select the service resource suitable for the user terminal capability according to the packet capability information to be allocated to the user terminal, thereby The capability synchronization between the user terminal and the network device is realized, and the problem that the capability cannot be synchronized between the network device and the user terminal is solved.

Further, when the network status changes, the resource allocation unit 503 stops allocating the first service resource to the user terminal.

The communication system 60 provided by the embodiment of the present invention, as shown in FIG. 6, includes the user terminal 40 as described above and the network device 50 as described above.

The functions and structures of the user terminal 40 and the network device 50 have been described in detail in the foregoing embodiments, and are not described herein.

The embodiment of the present invention provides a communication system, where the user terminal groups the supported capability information to obtain the packet capability information, and carries the packet capability information when reporting the resource request message to the network device, so that the network device selects an appropriate according to the packet capability information. The service resource, the user terminal receives the service resource selected by the network device according to the grouping capability information. If the user terminal reports multiple sets of capability information, when the user terminal is in the DCH state or the FACH state, if the network state changes, the network device may re-select the service resource suitable for the user terminal capability according to the packet capability information to be allocated to the user terminal, thereby The capability synchronization between the user terminal and the network device is realized, and the problem that the capability cannot be synchronized between the network device and the user terminal is solved.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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

Claims

Claim

A method for synchronizing capabilities, characterized in that it comprises:

The user terminal groups the supported capability information to obtain packet capability information, where the packet capability information includes first packet capability information and second packet capability information;

The user terminal reports a resource request message to the network device, where the resource request message includes the packet capability information, so that the network device selects a service resource according to the packet capability information; and the user terminal receives the network device allocation a first service resource selected according to the first grouping capability information;

2. The method according to claim 1, wherein the change in the network status comprises:

The service resources of the network device change; or

The current capabilities of the user terminal change.

3. The method of claim 1 wherein:

The first grouping capability information includes a first frequency band and capability information supported by the user terminal in the first frequency band; the second grouping capability information includes a second frequency band, and the user terminal is in the second Capacity information supported in the frequency band;

The first frequency band and the second frequency band are different frequency bands, or the first frequency band and the second frequency band are the same frequency band.

The method according to claim 1, wherein the capability information comprises: an encoding mode, a multi-slot type, a high-speed downlink packet access HSDPA capability level, a high-speed uplink packet access HSUPA capability level, At least one of frequency band information or a switching capability supported on a corresponding frequency band.

The method according to claim 1, wherein the service resource comprises: at least one of a frequency, a codeword or a slot structure.

6. A capability synchronization method, characterized in that:

The network device receives a resource request message on the user terminal, where the resource request message includes packet capability information of the user terminal, where the packet capability information includes first packet capability information and second packet capability information;

The network device selects a first service resource according to the first grouping capability information;

The network device allocates the first service resource to the user terminal;

When the network status changes, the network device selects the second service resource according to the second grouping capability information;

The network device allocates the second service resource to the user terminal.

The method according to claim 6, wherein when the network status changes, the method further includes:

The network device stops allocating the first service resource to the user terminal.

The method according to claim 6 or 7, wherein the change of the network status comprises:

The service resources of the network device change; or

The current capabilities of the user terminal change.

9. A method according to claim 6 or claim 7 wherein:

10. A user terminal, comprising:

a grouping unit, configured to group the supported capability information to obtain packet capability information, where the packet capability information includes first packet capability information and second packet capability information;

An information sending unit, configured to report a resource request message to the network device, where the resource request message is Include the packet capability information, so that the network device selects a service resource according to the packet capability information;

a resource receiving unit, configured to receive, by the network device, a first service resource selected according to the first grouping capability information;

The resource receiving unit is further configured to receive, by the network device, a second service resource that is selected according to the second grouping capability information.

The user terminal according to claim 10, wherein the change in the network status comprises:

The service resources of the network device change; or

The current capabilities of the user terminal change.

The user terminal according to claim 10, wherein the first grouping capability information comprises a first frequency band and capability information supported by the user terminal in the first frequency band; The capability information includes a second frequency band and capability information supported by the user terminal in the second frequency band;

13. A network device, comprising:

The information receiving unit is configured to receive a resource request message reported by the user terminal, where the resource request message includes packet capability information of the user terminal, where the packet capability information includes first grouping capability information and second grouping capability information;

a selecting unit, configured to select a first service resource according to the first grouping capability information; a resource allocation unit, configured to allocate the selected first service resource to the user terminal; when a network state changes, The selecting unit is further configured to select the second service resource according to the second grouping capability information. Correspondingly, the resource allocating unit is further configured to allocate the second service resource to the user terminal.

14. The network device according to claim 13, wherein when the network status changes The resource allocation unit stops allocating the first service resource to the user terminal.

The network device according to claim 13 or 14, wherein the change in the network status comprises:

The service resources of the network device change; or

The capabilities supported by the user terminal change.

16. The network device according to claim 13 or 14, wherein

17. A communication system, comprising: a user terminal and a network device;

The user terminal is configured to group the supported capability information to obtain packet capability information, where the packet capability information includes first packet capability information and second packet capability information, and report a resource request message to the network device, where the resource request is The message includes the packet capability information, so that the network device selects a service resource according to the packet capability information; and receives a first service resource that is selected by the network device according to the first packet capability information; when the network state And receiving, by the network device, a second service resource that is selected according to the second grouping capability information, where the network device is configured to receive a resource request message reported by the user terminal, where the resource request message includes the user a packet capability information of the terminal, where the packet capability information includes first packet capability information and second packet capability information; selecting a first service resource according to the first packet capability information; and allocating the selected first service resource to The user terminal; when the network status changes, And the second service resource is selected according to the second grouping capability information; the second service resource is allocated to the user terminal; wherein the service resource includes the first service resource and the second service resource.