CN107666727B

CN107666727B - Method, device and system for capability negotiation

Info

Publication number: CN107666727B
Application number: CN201610590004.9A
Authority: CN
Inventors: 吴昱民; 刘星
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-07-25
Filing date: 2016-07-25
Publication date: 2023-04-11
Anticipated expiration: 2036-07-25
Also published as: CN107666727A

Abstract

The invention provides a method, a device and a system for capability negotiation, wherein the method comprises the following steps: the method comprises the steps that a main service base station (MeNB) sends capability information of UE under the control of the MeNB and second auxiliary cell group configuration of other SeNB except a first SeNB in base stations connected with the MeNB to a first auxiliary service base station (SeNB); the MeNB receives a first auxiliary cell group configuration of the first SeNB, wherein the first auxiliary cell group configuration is obtained at least according to the capability information of the UE and the second auxiliary cell group configuration; and the MeNB uses the first secondary cell group configuration and the second secondary cell group configuration to perform RRC connection reconfiguration on the UE. The invention solves the problem that the capability negotiation can not be carried out under the scene that the UE is connected with more than two base stations in the related technology.

Description

Method, device and system for capability negotiation

Technical Field

The present invention relates to the field of communications, and in particular, to a method, an apparatus, and a system for capability negotiation.

Background

Fig. 1 is a schematic diagram of a Dual Connectivity (DC) network architecture in the related art. For each UE (User equipment), in a control plane, a MeNB (Master eNB, a main serving base station, generally referred to as a macro base station node) is connected to an MME (Mobility Management Entity) through an S1-MME, and the MeNB and the SeNB (Secondary eNB, a Secondary serving base station, generally referred to as a micro base station or a low power node) are connected through an X2-C. On the user plane, for MCG bearer (Master cell group bearer), the MeNB is connected to S-GW (Serving Gateway) through S1-U, and the SeNB does not participate in data transmission of the user plane. For split bearer, the MeNB is connected to the S-GW through S1-U and the SeNB through X2-U. For SCG bearer (Secondary cell group bearer), seNB is connected to S-GW through S1-U, and MeNB does not participate in data transmission of user plane.

In dual connectivity, because the UE needs to perform data transmission with the MeNB and the SeNB at the same time, the MeNB and the SeNB need to negotiate the UE capability, which ensures that the UE configuration by the MeNB and the UE configuration by the SeNB do not exceed the UE capability upper limit. In the prior art, the MeNB and the SeNB need to exchange and understand the configuration information of the UE from the other side, and then adjust the configuration information of the UE according to the latest configuration information of the other side, so as to avoid the total configuration from exceeding the upper limit of the capability of the UE.

In the related art, rel-12 proposes dual connectivity, which involves at most a negotiation of UE capabilities between two base stations. A more common scenario is that the UE connects to more than two base stations simultaneously, for example, the UE connects to the MeNB and multiple senbs simultaneously, or, to implement smooth handover or bearer transfer, the UE maintains connection to the source base station and the target base station simultaneously during handover, maintains connection to the source secondary base station and the target secondary base station simultaneously during secondary base station change, or maintains connection to the source base station, the source secondary base station, the target primary base station and the target secondary base station simultaneously during dual-connectivity handover.

In the prior art, the problem of how to implement negotiation on the UE capability between base stations in the above scenario is not considered. If the negotiation mode of dual connectivity is still adopted, it is easy to cause the configuration of the base station to the UE to exceed the upper limit of the UE capability, or the UE capability is not fully utilized.

In view of the above problems in the related art, no effective solution has been found at present.

Disclosure of Invention

The embodiment of the invention provides a capability negotiation method, a device and a system, which are used for at least solving the problem that the capability negotiation cannot be carried out in the scene that UE is connected with more than two base stations in the related technology.

According to an embodiment of the present invention, there is provided a capability negotiation method, including: the method comprises the steps that a main service base station MeNB sends capability information of UE under the management of the MeNB and second auxiliary cell group configuration of other SeNBs except a first SeNB in base stations connected with the MeNB to a first auxiliary service base station SeNB; the MeNB receives a first secondary cell group configuration of the first SeNB reply, wherein the first secondary cell group configuration is at least obtained according to the capability information of the UE and the second secondary cell group configuration; the MeNB performs the RRC connection reconfiguration on the UE using the first secondary cell group configuration and the second secondary cell group configuration.

Optionally, when the first SeNB is an SeNB to be accessed, the sending, by the master serving base station MeNB, the capability information of the UE under the jurisdiction of the MeNB and the configuration of the second auxiliary cell group of senbs other than the first SeNB in the base stations connected to the MeNB to the first auxiliary serving base station SeNB includes: and the MeNB sends an SeNB addition request message to the first SeNB, wherein the addition request message carries the capability information of the UE and the configuration of the second auxiliary cell group.

Optionally, after the MeNB sends a SeNB addition request message to the first SeNB, the method further includes: and after receiving the SeNB addition request response message replied by the first SeNB, the MeNB sends a SeNB modification request message to the other SeNB, wherein the addition request response message carries the configuration of the first auxiliary cell group and the capability information of the UE, and the SeNB modification request message carries the configuration of the first auxiliary cell group and the capability information of the UE.

Optionally, when the capability information of the UE changes, the sending, by the master serving base station MeNB, the capability information of the UE under the MeNB jurisdiction and the second auxiliary cell group configuration of senbs other than the first SeNB in the base stations connected to the MeNB to the first auxiliary serving base station SeNB includes: the MeNB sends a first SeNB modification request message and a second SeNB modification request message to a first SeNB and the other SeNB respectively, wherein the first SeNB modification request message carries the capability information of the UE and the configuration of a second auxiliary cell group, and the second SeNB modification request message carries the capability information of the UE and the configuration of the first auxiliary cell group.

Optionally, the receiving, by the MeNB, the own first secondary cell group configuration replied by the first SeNB includes: and the MeNB receives an SeNB modification request response message replied by the first SeNB, wherein the SeNB modification request response message carries the updated first auxiliary cell group configuration of the first SeNB.

Optionally, when the configuration of the first secondary cell group of the first SeNB changes, the sending, by the master serving base station MeNB, the capability information of the UE under the MeNB jurisdiction and the configuration of the second secondary cell group of the senbs other than the first SeNB in the base stations connected to the MeNB to the first secondary serving base station SeNB includes: and after receiving the SeNB modification requirement messages sent by the other SeNB, the MeNB sends a SeNB modification request message to the first SeNB, wherein the SeNB modification requirement message carries the configuration of the second auxiliary cell group, and the SeNB modification request message carries the capability information of the UE and the configuration of the second auxiliary cell group.

Optionally, the receiving, by the MeNB, the own first secondary cell group configuration of the first SeNB reply includes: and the MeNB receives a modification request response message replied by the first SeNB, wherein the modification request response message carries the updated configuration of the first auxiliary cell group.

Optionally, when context transfer occurs between senbs, sending, by a master serving base station MeNB, capability information of a UE under the MeNB jurisdiction and second auxiliary cell group configuration of senbs other than the first SeNB in base stations connected to the MeNB to a first auxiliary serving base station SeNB includes: and the MeNB sends an SeNB addition request message to the first SeNB, wherein the SeNB addition request message carries the capability information of the UE and the configuration of the second auxiliary cell group.

Optionally, the receiving, by the MeNB, the own first secondary cell group configuration of the first SeNB reply includes: and the MeNB receives an addition request response message replied by the first SeNB, wherein the addition request response message carries the configuration of the first auxiliary cell group.

According to an embodiment of the present invention, another capability negotiation method is provided, including: a source master service base station (MeNB) sends capability information of UE (user equipment) under the control of the source MeNB, source master cell group configuration of the source MeNB and source auxiliary cell group configuration of one or more source auxiliary service base stations (SeNB) connected with the source MeNB to a target MeNB; the source MeNB receives the own target master cell group configuration replied by the target MeNB and the target auxiliary cell group configurations of one or more target SeNBs connected with the target MeNB, wherein the target master cell group configuration and the target auxiliary cell group configuration are at least obtained according to the capability information of the UE, the source master cell group configuration and the source auxiliary cell group configuration; and the source MeNB uses the source master cell group configuration, the source auxiliary cell group configuration, the target master cell group configuration and the target auxiliary cell group configuration to carry out RRC connection reconfiguration on the UE.

Optionally, the sending, by the source master serving base station MeNB, capability information of the UE governed by the source MeNB, the source master cell group configuration of the source MeNB, and the source secondary cell group configurations of one or more source secondary serving base stations senbs connected to the source MeNB to the target MeNB by the source master serving base station MeNB includes: and the source MeNB sends a switching request message to the target MeNB, wherein the switching request message carries the capability information of the UE, the configuration of the source main cell group and the configuration of the source auxiliary cell group.

Optionally, the receiving, by the source MeNB, the own target master cell group configuration replied by the target MeNB and the target secondary cell group configurations of the one or more target senbs connected to the target MeNB include: and the source MeNB receives an addition request response message replied by the target MeNB, wherein the addition request response message carries target main cell group configuration and one or more target auxiliary cell group configurations.

According to another embodiment of the present invention, there is provided an apparatus for capability negotiation, applied in a master serving base station MeNB, including: a sending module, configured to send, to a first auxiliary serving base station SeNB, capability information of the UE governed by the MeNB and second auxiliary cell group configurations of senbs connected to the MeNB, except the first SeNB; a receiving module, configured to receive a first secondary cell group configuration of the first SeNB reply, where the first secondary cell group configuration is obtained at least according to the capability information of the UE and the second secondary cell group configuration; a configuration module to perform an RRC connection reconfiguration for the UE using the first secondary cell group configuration and the second secondary cell group configuration.

Optionally, when the first SeNB is an SeNB to be accessed, the sending module includes:

a sending unit, configured to send an SeNB addition request message to the first SeNB, where the addition request message carries capability information of the UE and configuration of the second secondary cell group.

According to another embodiment of the present invention, an apparatus for capability negotiation, applied in a source master serving base station MeNB in a base station transfer scenario, includes: a sending module, configured to send, to a target MeNB, capability information of a UE governed by the source MeNB, source master cell group configuration of the source MeNB, and source auxiliary cell group configuration of one or more source auxiliary serving base stations senbs connected to the source MeNB; a receiving module, configured to receive a target master cell group configuration of the target MeNB reply and a target secondary cell group configuration of one or more target senbs connected to the target MeNB, where the target master cell group configuration and the target secondary cell group configuration are obtained at least according to the capability information of the UE, the source master cell group configuration, and the source secondary cell group configuration; a configuration module, configured to perform RRC connection reconfiguration for the UE using the source master cell group configuration, the source secondary cell group configuration, the target master cell group configuration, and the target secondary cell group configuration.

Optionally, the sending module includes:

and the sending unit is used for sending a switching request message to the target MeNB, wherein the switching request message carries the capability information of the UE, the configuration of the source main cell group and the configuration of the source auxiliary cell group.

According to another embodiment of the present invention, there is provided a system for capability negotiation, including: a main serving base station MeNB, a plurality of auxiliary serving base stations SeNB, and a user equipment UE, wherein the MeNB includes: a first sending module, configured to send, to a first auxiliary serving base station SeNB, capability information of the UE governed by the MeNB and second auxiliary cell group configurations of senbs connected to the MeNB, except the first SeNB; a first receiving module, configured to receive a first secondary cell group configuration of the first SeNB replied by itself, where the first secondary cell group configuration is obtained at least according to capability information of the UE and the second secondary cell group configuration; a first configuration module to perform an RRC connection reconfiguration for the UE using the first secondary cell group configuration and the second secondary cell group configuration; the first SeNB includes: a second receiving module, configured to configure capability information of the UE and a second secondary cell group of a SeNB other than the first SeNB in a base station connected to the MeNB; a second sending module, configured to reply a first secondary cell group configuration of the MeNB to the MeNB, where the first secondary cell group configuration is obtained at least according to the capability information of the UE and the second secondary cell group configuration; the UE includes: a third receiving module, configured to receive the first secondary cell group configuration and the second secondary cell group configuration; a second configuration module to update a radio resource configuration using the first secondary cell group configuration and the second secondary cell group configuration.

Optionally, when the first SeNB is an SeNB to be accessed, the first sending module includes: a sending unit, configured to send an SeNB addition request message to the first SeNB, where the addition request message carries capability information of the UE and configuration of the second secondary cell group.

According to still another embodiment of the present invention, there is also provided a storage medium. The storage medium is configured to store program code for performing the steps of:

sending capability information of the UE under the control of the MeNB and second auxiliary cell group configuration of other SeNB except the first SeNB in the base stations connected with the MeNB to a first auxiliary service base station SeNB;

receiving a first secondary cell group configuration of the first SeNB, wherein the first secondary cell group configuration is obtained at least according to the capability information of the UE and the second secondary cell group configuration;

performing an RRC connection reconfiguration for the UE using the first secondary cell group configuration and the second secondary cell group configuration.

According to the invention, the capability information of the UE under the control of the MeNB and the second auxiliary cell group configuration of other SeNB except the first SeNB in the base station connected with the MeNB are sent to the first auxiliary service base station SeNB; the MeNB receives a first secondary cell group configuration of the first SeNB reply, wherein the first secondary cell group configuration is at least obtained according to the capability information of the UE and the second secondary cell group configuration; the MeNB performs the RRC connection reconfiguration on the UE using the first secondary cell group configuration and the second secondary cell group configuration. In a scenario that the UE is connected to multiple senbs, when performing capability negotiation with each SeNB, the cell group configuration of other senbs except for the cell lease configuration of the MeNB and the capability information of the UE is also sent at the same time, so that the problem that the capability negotiation cannot be performed in a scenario that the UE is connected to more than two base stations in the related art can be solved, and the configuration of the base stations on the UE is prevented from exceeding the upper limit of the capability of the UE.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a schematic diagram of a dual-connectivity network architecture according to the related art;

FIG. 2 is a flow diagram of a method of capability negotiation according to an embodiment of the present invention;

FIG. 3 is an interaction diagram of a first scenario in an embodiment of the invention;

FIG. 4 is an interaction diagram of a second scenario in an embodiment of the present invention;

FIG. 5 is an interaction diagram of a third scenario in an embodiment of the present invention;

FIG. 6 is an interaction diagram of a fourth scenario in an embodiment of the present invention;

FIG. 7 is a flow diagram of another method of capability negotiation according to an embodiment of the present invention;

FIG. 8 is an interaction diagram of a fifth scenario in an embodiment of the present invention;

FIG. 9 is a block diagram of an apparatus for capability negotiation according to an embodiment of the present invention;

FIG. 10 is a block diagram of an apparatus for capability negotiation according to an embodiment of the present invention;

fig. 11 is a block diagram of a system for capability negotiation according to an embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Example 1

In this embodiment, a method for capability negotiation is provided, and fig. 2 is a flowchart of a method for capability negotiation according to an embodiment of the present invention, as shown in fig. 2, the flowchart includes the following steps:

step S202, the main service base station MeNB sends the capability information of the UE under the management of the MeNB and the second auxiliary cell group configuration of other SeNBs except the first SeNB in the base stations connected with the MeNB to the first auxiliary service base station SeNB; for example, seNB includes: and the MeNB sends the auxiliary cell group configuration of the second SeNB and the auxiliary cell group configuration of the third SeNB when the first SeNB, the second SeNB and the third SeNB interact. Of course, the master cell group configuration of the SeNB is also included.

Step S204, the MeNB receives a first auxiliary cell group configuration of the first SeNB, wherein the first auxiliary cell group configuration is at least obtained according to the capability information of the UE and the second auxiliary cell group configuration;

step S206, the MeNB uses the first auxiliary cell group configuration and the second auxiliary cell group configuration to perform RRC connection reconfiguration on the UE.

Through the steps, the capability information of the UE under the management of the MeNB and the second auxiliary cell group configuration of other SeNBs except the first SeNB in the base stations connected with the MeNB are sent to the first auxiliary service base station SeNB; the MeNB receives a first auxiliary cell group configuration of the first SeNB, wherein the first auxiliary cell group configuration is obtained at least according to the capability information of the UE and the second auxiliary cell group configuration; and the MeNB uses the first secondary cell group configuration and the second secondary cell group configuration to carry out RRC connection reconfiguration on the UE. In a scenario that the UE is connected to multiple senbs, when performing capability negotiation with each SeNB, the cell group configuration of other senbs except for the cell lease configuration of the MeNB and the capability information of the UE is also sent at the same time, so that the problem that the capability negotiation cannot be performed in a scenario that the UE is connected to more than two base stations in the related art can be solved, and the configuration of the base stations on the UE is prevented from exceeding the upper limit of the capability of the UE.

The present embodiment can be applied to different scenarios, which are illustrated below:

fig. 3 is an interaction diagram of a first scenario in an embodiment of the present invention, and as shown in fig. 3, a related signaling flowchart describing negotiation between base stations about UE capabilities when a MeNB adds a second secondary base station SeNB2 to a UE under the condition that a UE is connected to a main base station MeNB and a first secondary base station SeNB1 at the same time is described, where the signaling flowchart includes:

step 1, the menb sends a SeNB Addition Request message (SeNB Addition Request) to the SeNB2, carrying the configuration of the master cell group, the configuration of the first auxiliary cell group and the full capability of the UE.

Wherein the master cell group configuration is a configuration from MeNB and the first secondary cell group configuration is a configuration from SeNB 1.

And 2, the SeNB2 receives the SeNB Addition Request message from the MeNB, sets second auxiliary cell group configuration according to the main cell group configuration, the first auxiliary cell group configuration and the whole capabilities of the UE carried in the message, carries the second auxiliary cell group configuration in a SeNB Addition Request response message (SeNB Addition Request acknowledgement), and replies to the MeNB.

And 3, the MeNB sends a SeNB Modification Request message (SeNB Modification Request) to the SeNB1, wherein the SeNB Modification Request message carries the configuration of the main cell group, the configuration of the second auxiliary cell group and the whole capability of the UE.

And 4, the SeNB1 receives the SeNB Modification request message from the MeNB, updates the configuration of the first auxiliary cell group according to the configuration of the main cell group, the configuration of the second auxiliary cell group and all the capabilities of the UE carried in the message, carries the updated configuration of the first auxiliary cell in a SeNB Modification request response message (SeNB Modification acknowledgement) and replies to the MeNB.

And 5, the MeNB sends an RRC Connection reconfiguration message (RRC Connection reconfiguration) to the UE, wherein the RRC Connection reconfiguration message carries the configuration of the main cell group, the configuration of the first auxiliary cell group and the configuration of the second auxiliary cell.

Step 6, the UE replies a Radio Resource Control (RRC) Connection Reconfiguration complete message (RRC Connection Reconfiguration) to the MeNB, indicating that the UE has enabled the new Radio Resource configuration.

And 7, after receiving the RRC connection Reconfiguration Complete message of the UE, the MeNB sends a SeNB Reconfiguration Complete message (SeNB Reconfiguration Complete) to the SeNB1, carries the configuration of the master cell group, the configuration of the second auxiliary cell group and all the capabilities of the UE, and informs the completion of the Reconfiguration of the SeNB 1.

And step 8, after receiving the RRC connection reconfiguration completion message of the UE, the MeNB sends a SeNB reconfiguration completion message to the SeNB2, carries the configuration of the master cell group, the configuration of the first auxiliary cell group and the whole capability of the UE, and informs the completion of the reconfiguration of the SeNB 2.

Fig. 4 is an interaction schematic diagram of a second scenario in the embodiment of the present invention, and as shown in fig. 4, a related signaling flowchart describing negotiation between base stations about UE capabilities when an MeNB initiates a change of an auxiliary cell group of an SeNB1 and an SeNB2 when the UE and the MeNB, the SeNB1, and the SeNB2 are connected simultaneously is described, where the signaling flowchart includes:

step 1, the menb sends a SeNB Modification Request message (SeNB Modification Request) to the SeNB1, carrying the configuration of the master cell group, the configuration of the second auxiliary cell group and the whole capability of the UE.

Wherein the primary cell group configuration is a configuration from MeNB and the second secondary cell group configuration is a configuration from SeNB 2.

And 2, the SeNB1 receives the SeNB Modification Request message from the MeNB, updates the configuration of the first auxiliary cell group according to the configuration of the main cell group, the configuration of the second auxiliary cell group and all the capabilities of the UE carried in the message, carries the updated configuration of the first auxiliary cell group in a SeNB Modification Request response message (SeNB Modification Request acknowledgement), and replies to the MeNB.

And 3, the MeNB sends an SeNB Modification Request message (SeNB Modification Request) to the SeNB2, and the SeNB Modification Request message carries the configuration of the master cell group, the configuration of the first auxiliary cell group and the whole capability of the UE.

And 4, the SeNB2 receives the SeNB Modification request message from the MeNB, updates the configuration of the second auxiliary cell group according to the configuration of the main cell group, the configuration of the first auxiliary cell group and the whole capability of the UE carried in the message, carries the updated configuration of the second auxiliary cell in a SeNB Modification request response message (SeNB Modification acknowledgement) and replies to the MeNB.

And 5, the MeNB sends an RRC connection reconfiguration message to the UE, wherein the RRC connection reconfiguration message carries the configuration of the main cell group, the configuration of the first auxiliary cell group and the configuration of the second auxiliary cell.

And 6, the UE replies an RRC connection reconfiguration completion message to the MeNB to indicate that the UE starts new radio resource configuration.

And 7, after receiving the RRC connection reconfiguration complete message of the UE, the MeNB sends a SeNB reconfiguration complete message to the SeNB1, carries the configuration of the main cell group, the configuration of the second auxiliary cell group and the whole capability of the UE, and informs the completion of the reconfiguration of the SeNB 1.

And step 8, after receiving the RRC connection reconfiguration complete message of the UE, the MeNB sends a SeNB reconfiguration complete message to the SeNB2, carries the configuration of the main cell group, the configuration of the first auxiliary cell group and the whole capability of the UE, and informs the completion of the reconfiguration of the SeNB 2.

Fig. 5 is an interaction diagram of a third scenario in the embodiment of the present invention, and as shown in fig. 5, a related signaling flowchart describing negotiation between base stations about UE capabilities when SeNB1 initiates a secondary cell group change procedure to SeNB1 when UE is connected to MeNB, seNB1, and SeNB2 at the same time is described, where the signaling flowchart includes:

and 1, sending a SeNB Modification requirement message (SeNB Modification Required) to the MeNB by the SeNB1, wherein the SeNB Modification Required message carries the configuration of the first auxiliary cell group.

And 2, the MeNB receives the SeNB modification requirement message from the SeNB1, and sends a SeNB modification request message to the SeNB2, wherein the SeNB modification request message carries the configuration of the main cell group, the configuration of the first auxiliary cell group and the whole capability of the UE.

And 3, the SeNBs 2 receives the SeNB modification request message from the MeNB, updates the configuration of the second auxiliary cell group according to the configuration of the main cell group, the configuration of the first auxiliary cell group and the whole capability of the UE carried in the message, carries the updated configuration of the second auxiliary cell group in the SeNB modification request response message, and replies the message to the MeNB.

And 4, the MeNB sends an RRC connection reconfiguration message to the UE, wherein the RRC connection reconfiguration message carries the configuration of the main cell group, the configuration of the first auxiliary cell group and the configuration of the second auxiliary cell.

And 5, the UE replies an RRC connection reconfiguration completion message to the MeNB to indicate that the UE enables new radio resource configuration.

And 6, after receiving the RRC connection reconfiguration complete message of the UE, the MeNB replies a SeNB Modification confirmation message (SeNB Modification confirmation) to the SeNB1, carries the configuration of the master cell group, the configuration of the second auxiliary cell group and all the capabilities of the UE, and informs the completion of the Modification of the SeNB 1.

And 7, after receiving the RRC connection reconfiguration complete message of the UE, the MeNB sends a SeNB reconfiguration complete message to the SeNB2, carries the configuration of the main cell group, the configuration of the first auxiliary cell group and the whole capability of the UE, and informs the completion of the reconfiguration of the SeNB 2.

Fig. 6 is an interaction diagram of a fourth scenario in the embodiment of the present invention, and as shown in fig. 6, when a UE and an MeNB, an SeNB1, and an SeNB2 are simultaneously connected, a case is described in which the MeNB transfers a context of the UE on the SeNB1 to a third secondary base station SeNB, an initiated secondary base station change (change of SeNB) procedure, and a related signaling flow diagram for negotiating UE capabilities between base stations includes:

and step 1, the MeNB sends an SeNB addition request message to the SeNB3, and the SeNB addition request message carries the configuration of the main cell group, the configuration of the first auxiliary cell group, the configuration of the second auxiliary cell group and all the capabilities of the UE.

Wherein the master cell group configuration is a configuration from MeNB, the first secondary cell group configuration is a configuration from SeNB1, and the second secondary cell group configuration is a configuration from SeNB 2. It should be noted that, the primary cell group configuration and the second secondary cell configuration are used for UE capability negotiation, and the first secondary cell group configuration is used for delta signaling (delta signaling).

And 2, the SeNBs 3 receives the SeNB addition request message from the MeNB, sets the configuration of a third auxiliary cell group according to the configuration of the main cell group, the configuration of the second auxiliary cell group and the whole capability of the UE carried in the message, carries the configuration of the third auxiliary cell group in the SeNB addition request response message, and replies to the MeNB.

And 3, the MeNB sends a SeNB modification request message to the SeNB2, wherein the SeNB modification request message carries the configuration of the main cell group, the configuration of the third auxiliary cell group and all the capabilities of the UE.

And 4, the SeNBs 2 receives the SeNB modification request message from the MeNB, updates the second auxiliary cell group configuration according to the main cell group configuration, the third auxiliary cell group configuration and the whole capability of the UE carried in the message, carries the updated second auxiliary cell configuration in the SeNB modification request response message, and replies to the MeNB.

Step 5, the MeNB sends a SeNB Release Request message (SeNB Release Request) to the SeNB1

And 6, the MeNB sends an RRC connection reconfiguration message to the UE, wherein the RRC connection reconfiguration message carries the configuration of the main cell group, the configuration of the second auxiliary cell group and the configuration of the third auxiliary cell.

And 7, the UE replies an RRC connection reconfiguration completion message to the MeNB to indicate that the UE enables new radio resource configuration.

And step 8, after receiving the RRC connection reconfiguration complete message of the UE, the MeNB sends a SeNB reconfiguration complete message to the SeNB2, carries the configuration of the main cell group, the configuration of the third auxiliary cell group and the whole capability of the UE, and informs the completion of the reconfiguration of the SeNB 2.

And 9, after receiving the RRC connection reconfiguration complete message of the UE, the MeNB sends a SeNB reconfiguration complete message to the SeNB3, carries the configuration of the main cell group, the configuration of the second auxiliary cell group and all the capabilities of the UE, and informs the completion of the reconfiguration of the SeNB 3.

Fig. 7 is a flowchart of another capability negotiation method according to an embodiment of the present invention, as shown in fig. 3, the flowchart includes the following steps:

step S702, a source main service base station (MeNB) sends the capability information of the UE under the control of the source MeNB, the source main cell group configuration of the source MeNB and the source auxiliary cell group configuration of one or more source auxiliary service base stations (SeNB) connected with the source MeNB to a target MeNB;

step S704, the source MeNB receives the own target master cell group configuration replied by the target MeNB and the target auxiliary cell group configurations of one or more target SeNBs connected with the target MeNB, wherein the target master cell group configuration and the target auxiliary cell group configuration are at least obtained according to the capability information of the UE, the source master cell group configuration and the source auxiliary cell group configuration;

and step S706, the source MeNB uses the source master cell group configuration, the source auxiliary cell group configuration, the target master cell group configuration and the target auxiliary cell group configuration to carry out RRC connection reconfiguration on the UE.

Optionally, the sending, by the source master serving base station MeNB, capability information of the UE governed by the source MeNB to the target MeNB, the source master cell group configuration of the source MeNB, and the source auxiliary cell group configuration of one or more source auxiliary serving base stations SeNB connected to the source MeNB include: and the source MeNB sends a switching request message to the target MeNB, wherein the switching request message carries the capability information of the UE, the configuration of the source main cell group and the configuration of the source auxiliary cell group.

Optionally, the receiving, by the source MeNB, the target primary cell group configuration of the target MeNB reply and the target secondary cell group configurations of the one or more target senbs connected to the target MeNB by the target MeNB include: and the source MeNB receives an addition request response message replied by the target MeNB, wherein the addition request response message carries the configuration of the target main cell group and the configuration of one or more target auxiliary cell groups.

Fig. 8 is an interaction diagram of a fifth scenario in the embodiment of the present invention, and as shown in fig. 8, a signaling flow diagram related to negotiating the capability of the UE between base stations when the UE simultaneously maintains connection with the source enb, the target MeNB, the source SeNB, and the target SeNB when the user plane bearer of the UE is transferred from the source base station (the source MeNB and/or the source SeNB) to the target base station (the target MeNB and/or the target SeNB) in order to implement that the handover interruption time is zero is described, includes:

step 1, the source MeNB sends a Handover Request message (Handover Request) to the target MeNB, wherein the Handover Request message carries the configuration of the source main cell group, the configuration of the source auxiliary cell group and all the capabilities of the UE.

And 2, the target MeNB receives the switching request message from the source MeNB, sets the target main cell configuration according to the source main cell group configuration, the source auxiliary cell group configuration and all the capabilities of the UE carried in the message, and the target SeNB sends an SeNB addition request message carrying the source main cell group configuration, the source auxiliary cell group configuration, the target main cell group configuration and all the capabilities of the UE.

And step 3, the target SeNB receives the SeNB addition request message from the target MeNB, sets the target auxiliary cell group configuration according to the source main cell group configuration, the source auxiliary cell group configuration, the target main cell group configuration and all the capabilities of the UE carried in the message, carries the target auxiliary cell group configuration in the SeNB addition request response message, and replies to the target MeNB.

And step 4, the target MeNB receives the SeNB addition request response message from the target SeNB, replies a switching request response message to the source MeNB, and carries the target main cell group configuration and the target auxiliary cell configuration.

And step 5, the source MeNB receives the switching request response message from the target MeNB, and sends an SeNB modification request message to the source SeNB, wherein the SeNB modification request message carries the configuration of the source main cell group, the configuration of the target auxiliary cell group and the whole capability of the UE.

And 6, the source SeNB receives the SeNB modification request message from the source MeNB, updates the source auxiliary cell group configuration according to the source main cell group configuration, the target auxiliary cell group configuration and all the capabilities of the UE carried in the message, carries the updated source auxiliary cell group configuration in the SeNB modification request response message, and replies to the source MeNB.

And 7, the source MeNB sends an X2 notification message to the target MeNB, and the notification message carries the configuration of the source main cell, the configuration of the source auxiliary cell group and the whole capability of the UE.

And step 8, the source MeNB sends an RRC Connection reconfiguration message (RRC Connection reconfiguration) to the UE, wherein the RRC Connection reconfiguration message carries the configuration of the source main cell group, the configuration of the source auxiliary cell group, the configuration of the target main cell group and the configuration of the target auxiliary cell group.

Step 9, the UE replies to the target MeNB with an RRC Connection Reconfiguration complete message (RRC Connection Reconfiguration) indicating that the UE has enabled the new radio resource configuration.

And step 10, after receiving the RRC connection reconfiguration complete message of the UE, the target MeNB sends a SeNB reconfiguration complete message to the target SeNB, carries the source main cell group configuration, the source auxiliary cell group configuration, the target main cell group configuration and all the capabilities of the UE, and informs the target SeNB of the completion of reconfiguration.

Step 11, after receiving the RRC connection reconfiguration complete message of the UE, the target MeNB sends an SeNB reconfiguration complete message to the source MeNB, and notifies the source MeNB of the completion of the reconfiguration.

And step 12, after receiving the SeNB reconfiguration completion message from the target MeNB, the source MeNB sends the SeNB reconfiguration completion message to the source SeNB, carries all the capabilities of the source master cell group configuration, the target cell group configuration and the UE, and informs the source SeNB of the completion of the reconfiguration.

Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.

Example 2

In this embodiment, an apparatus and a system for capability negotiation are also provided, which are used to implement the foregoing embodiments and preferred embodiments, and are not described again after being described. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Fig. 9 is a block diagram of a capability negotiation apparatus according to an embodiment of the present invention, which may be applied in a main serving base station MeNB, and as shown in fig. 9, the apparatus includes:

a sending module 90, configured to send, to the first auxiliary serving base station SeNB, capability information of the UE governed by the MeNB and second auxiliary cell group configurations of senbs other than the first SeNB in base stations connected to the MeNB;

a receiving module 92, configured to receive a first secondary cell group configuration of the first SeNB reply, where the first secondary cell group configuration is obtained at least according to capability information of the UE and a second secondary cell group configuration;

a configuring module 94, configured to perform RRC connection reconfiguration for the UE using the first secondary cell group configuration and the second secondary cell group configuration.

Optionally, when the first SeNB is an SeNB to be accessed, the sending module 90 includes: a sending unit, configured to send an SeNB addition request message to the first SeNB, where the addition request message carries capability information of the UE and configuration of the second secondary cell group.

Fig. 10 is a block diagram of another capability negotiation apparatus according to an embodiment of the present invention, which may be applied in a source master serving base station MeNB in a base station transfer scenario, as shown in fig. 10, the apparatus includes:

a sending module 10, configured to send, to the target MeNB, capability information of a UE governed by the source MeNB, source master cell group configuration of the source MeNB, and source auxiliary cell group configuration of one or more source auxiliary serving base stations senbs connected to the source MeNB;

a receiving module 12, configured to receive a target master cell group configuration replied by the target MeNB and a target secondary cell group configuration of one or more target senbs connected to the target MeNB, where the target master cell group configuration and the target secondary cell group configuration are obtained at least according to capability information of the UE, a source master cell group configuration and a source secondary cell group configuration;

and a configuration module 14, configured to perform RRC connection reconfiguration on the UE by using the source master cell group configuration, the source secondary cell group configuration, the target master cell group configuration, and the target secondary cell group configuration.

Optionally, the sending module 10 includes: and the sending unit is used for sending a switching request message to the target MeNB, wherein the switching request message carries the capability information of the UE, the configuration of the source main cell group and the configuration of the source auxiliary cell group.

Fig. 11 is a block diagram of a system for capability negotiation according to an embodiment of the present invention, as shown in fig. 11, the system including:

a primary serving base station MeNB110, a plurality of secondary serving base stations SeNB112, a user equipment UE114,

the MeNB110 includes:

a first sending module 1100, configured to send, to a first auxiliary serving base station SeNB, capability information of a UE governed by the MeNB and second auxiliary cell group configurations of senbs other than the first SeNB in base stations connected to the MeNB;

a first receiving module 1102, configured to receive a first secondary cell group configuration of the first SeNB reply, where the first secondary cell group configuration is obtained at least according to capability information of the UE and a second secondary cell group configuration;

a first configuring module 1104, configured to perform RRC connection reconfiguration on the UE by using the first secondary cell group configuration and the second secondary cell group configuration;

the first SeNB112 includes:

a second receiving module 1120, configured to configure capability information of the UE and a second secondary cell group of senbs connected to the MeNB, except the first SeNB;

a second sending module 1122, configured to reply a first secondary cell group configuration of itself to the MeNB, where the first secondary cell group configuration is obtained at least according to the capability information of the UE and the second secondary cell group configuration;

the UE114 includes:

a third receiving module 1140, configured to receive the first secondary cell group configuration and the second secondary cell group configuration;

a second configuration module 1142 for updating the radio resource configuration using the first secondary cell group configuration and the second secondary cell group configuration.

Optionally, when the first SeNB is an SeNB to be accessed, the first sending module 1100 includes: a sending unit, configured to send an SeNB addition request message to the first SeNB, where the addition request message carries capability information of the UE and configuration of the second secondary cell group.

It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.

Example 3

The embodiment of the invention also provides a storage medium. Alternatively, in this embodiment, the storage medium may be configured to store program codes for performing the following steps:

s1, sending capability information of UE under the control of an MeNB and second auxiliary cell group configuration of other SeNB except the first SeNB in base stations connected with the MeNB to the first auxiliary service base station SeNB;

s2, receiving self first auxiliary cell group configuration replied by the first SeNB, wherein the first auxiliary cell group configuration is at least obtained according to the capability information of the UE and the configuration of the second auxiliary cell group;

and S3, carrying out RRC connection reconfiguration on the UE by using the first auxiliary cell group configuration and the second auxiliary cell group configuration.

Optionally, in this embodiment, the storage medium may include but is not limited to: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

Optionally, in this embodiment, the processor performs, according to a program code stored in the storage medium, sending, to the first auxiliary serving base station SeNB, capability information of the UE under the jurisdiction of the MeNB and second auxiliary cell group configuration of senbs other than the first SeNB in base stations connected to the MeNB;

optionally, in this embodiment, the processor performs, according to a program code stored in the storage medium, a first secondary cell group configuration of itself that receives the first SeNB reply, where the first secondary cell group configuration is obtained at least according to the capability information of the UE and the second secondary cell group configuration;

optionally, in this embodiment, the processor performs RRC connection reconfiguration for the UE using the first secondary cell group configuration and the second secondary cell group configuration according to program code stored in the storage medium.

Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method of capability negotiation, comprising:

a main service base station (MeNB) sends capability information of UE under the control of the MeNB and second auxiliary cell group configuration of other service base stations (SeNB) except the first auxiliary service base station (SeNB) in base stations connected with the MeNB to the first auxiliary service base station (SeNB);

the MeNB receives a first auxiliary cell group configuration of the first auxiliary service base station SeNB, wherein the first auxiliary cell group configuration is at least obtained according to the capability information of the UE and the second auxiliary cell group configuration;

the MeNB performs the RRC connection reconfiguration on the UE using the first secondary cell group configuration and the second secondary cell group configuration.

2. The method of claim 1, wherein when the first auxiliary serving base station SeNB is a SeNB to be accessed, sending, by the master serving base station MeNB, capability information of the UE under the MeNB jurisdiction and second auxiliary cell group configurations of senbs connected to the MeNB, except the first auxiliary serving base station SeNB, to the first auxiliary serving base station SeNB comprises:

the MeNB sends an SeNB addition request message to a first auxiliary service base station SeNB, wherein the addition request message carries the capability information of the UE and the configuration of a second auxiliary cell group.

3. The method of claim 2, wherein after the MeNB sends a SeNB addition request message to the first secondary serving base station SeNB, the method further comprises:

and after receiving a SeNB addition request response message replied by the first auxiliary service base station SeNB, the MeNB sends a SeNB modification request message to the other SeNB, wherein the addition request response message carries the configuration of the first auxiliary cell group and the capability information of the UE, and the SeNB modification request message carries the configuration of the first auxiliary cell group and the capability information of the UE.

4. The method of claim 1, wherein when the capability information of the UE changes, the sending, by a master serving base station MeNB, the capability information of the UE under the MeNB jurisdiction and a second secondary cell group configuration of senbs connected to the MeNB except the first secondary serving base station SeNB to a first secondary serving base station SeNB comprises:

the MeNB sends a first auxiliary service base station SeNB modification request message and a second SeNB modification request message to a first auxiliary service base station SeNB and the other SeNB respectively, wherein the first auxiliary service base station SeNB modification request message carries the capability information of the UE and the configuration of a second auxiliary cell group, and the second SeNB modification request message carries the capability information of the UE and the configuration of the first auxiliary cell group.

5. The method of claim 4, wherein the MeNB receiving the first secondary cell group configuration of its own replied by the first secondary serving base station (SeNB) comprises:

and the MeNB receives an SeNB modification request response message replied by the first auxiliary service base station SeNB, wherein the SeNB modification request response message carries the updated first auxiliary cell group configuration of the first auxiliary service base station SeNB.

6. The method of claim 1, wherein when the first secondary cell group configuration of the first secondary serving base station SeNB changes, the master serving base station MeNB sending, to the first secondary serving base station SeNB, capability information of the MeNB-controlled UE and second secondary cell group configurations of senbs, except the first secondary serving base station SeNB, in base stations connected to the MeNB, the MeNB-controlled UE includes:

and after receiving the SeNB modification requirement messages sent by the other SeNB, the MeNB sends a SeNB modification request message to the first auxiliary service base station SeNB, wherein the SeNB modification requirement message carries the configuration of the second auxiliary cell group, and the SeNB modification request message carries the capability information of the UE and the configuration of the second auxiliary cell group.

7. The method of claim 6, wherein the MeNB receiving the first secondary cell group configuration of itself replied by the first secondary serving base station (SeNB) comprises:

and the MeNB receives a modification request response message replied by the first auxiliary service base station SeNB, wherein the modification request response message carries the updated configuration of the first auxiliary cell group.

8. The method of claim 1, wherein when context transfer occurs between the senbs, the sending, by the MeNB, the capability information of the UE under the MeNB and the second secondary cell group configuration of senbs connected to the MeNB, except the first secondary serving base station SeNB, to the first secondary serving base station SeNB by the master serving base station MeNB comprises:

the MeNB sends an SeNB addition request message to a first auxiliary service base station (SeNB), wherein the SeNB addition request message carries the capability information of the UE and the configuration of a second auxiliary cell group.

9. The method of claim 8, wherein the MeNB receiving the first secondary cell group configuration of itself replied by the first secondary serving base station (SeNB) comprises:

and the MeNB receives an addition request response message replied by the first auxiliary service base station SeNB, wherein the addition request response message carries the configuration of the first auxiliary cell group.

10. A method of capability negotiation, comprising:

a source main service base station (MeNB) sends capability information of UE (user equipment) under the control of the source main service base station (MeNB), source main cell group configuration of the source main service base station (MeNB) and source auxiliary cell group configuration of one or more source auxiliary service base stations (SeNB) connected with the source main service base station (MeNB) to a target MeNB;

the source master service base station MeNB receives the own target master cell group configuration replied by the target MeNB and the target auxiliary cell group configurations of one or more target SeNBs connected with the target MeNB, wherein the target master cell group configuration and the target auxiliary cell group configuration are at least obtained according to the capability information of the UE, the source master cell group configuration and the source auxiliary cell group configuration;

and the MeNB uses the source master cell group configuration, the source auxiliary cell group configuration, the target master cell group configuration and the target auxiliary cell group configuration to carry out RRC connection reconfiguration on the UE.

11. The method of claim 10, wherein the sending, by the source master serving base station MeNB, to the target MeNB, the capability information of the UE under the jurisdiction of the source master serving base station MeNB, the source master cell group configuration of the source master serving base station MeNB, and the source auxiliary cell group configurations of one or more source auxiliary serving base stations SeNB connected to the source master serving base station MeNB comprises:

and the source master service base station MeNB sends a switching request message to the target MeNB, wherein the switching request message carries the capability information of the UE, the configuration of the source master cell group and the configuration of the source auxiliary cell group.

12. The method of claim 11, wherein the receiving, by the source master serving base station MeNB, the own target master cell group configuration of the target MeNB reply and the target secondary cell group configurations of one or more target senbs connected to the target MeNB by the target MeNB comprises:

and the source master service base station MeNB receives an addition request response message replied by the target MeNB, wherein the addition request response message carries target master cell group configuration and one or more target auxiliary cell group configurations.

13. An apparatus for capability negotiation, applied in a main serving base station MeNB, comprising:

a sending module, configured to send, to a first auxiliary serving base station SeNB, capability information of the UE governed by the MeNB and second auxiliary cell group configurations of senbs connected to the MeNB, except the first auxiliary serving base station SeNB;

a receiving module, configured to receive a first secondary cell group configuration of the first secondary serving base station SeNB replied by the first secondary serving base station SeNB, where the first secondary cell group configuration is obtained at least according to the capability information of the UE and the second secondary cell group configuration;

a configuration module to perform an RRC connection reconfiguration for the UE using the first secondary cell group configuration and the second secondary cell group configuration.

14. The apparatus of claim 13, wherein when the first secondary serving base station SeNB is a SeNB to be accessed, the sending module comprises:

a sending unit, configured to send an SeNB addition request message to a first auxiliary serving base station SeNB, where the addition request message carries capability information of the UE and configuration of a second auxiliary cell group.

15. A capability negotiation device applied in a source master serving base station (MeNB) in a base station transfer scenario includes:

a sending module, configured to send, to a target MeNB, capability information of a UE governed by the source master serving base station MeNB, a source master cell group configuration of the source master serving base station MeNB, and a source auxiliary cell group configuration of one or more source auxiliary serving base stations SeNB connected to the source master serving base station MeNB;

a receiving module, configured to receive a target master cell group configuration of the target MeNB reply and a target secondary cell group configuration of one or more target senbs connected to the target MeNB, where the target master cell group configuration and the target secondary cell group configuration are obtained at least according to the capability information of the UE, the source master cell group configuration, and the source secondary cell group configuration;

a configuration module, configured to perform RRC connection reconfiguration on the UE by using the source master cell group configuration, the source secondary cell group configuration, the target master cell group configuration, and the target secondary cell group configuration.

16. The apparatus of claim 15, wherein the sending module comprises:

17. A system for capability negotiation, comprising: a main serving base station MeNB, a plurality of auxiliary serving base stations SeNB, user equipment UE, characterized in that,

the MeNB comprises:

a first sending module, configured to send, to a first auxiliary serving base station SeNB, capability information of the UE governed by the MeNB and second auxiliary cell group configurations of senbs connected to the MeNB, except the first auxiliary serving base station SeNB;

a first receiving module, configured to receive a first secondary cell group configuration of the first secondary serving base station SeNB, where the first secondary cell group configuration is obtained at least according to the capability information of the UE and the second secondary cell group configuration;

a first configuration module to perform an RRC connection reconfiguration for the UE using the first secondary cell group configuration and the second secondary cell group configuration;

the first secondary serving base station SeNB comprises:

a second receiving module, configured to configure the capability information of the UE and a second auxiliary cell group of a SeNB other than the first auxiliary serving base station SeNB in the base station connected to the MeNB;

a second sending module, configured to reply a first secondary cell group configuration of the MeNB to the MeNB, where the first secondary cell group configuration is obtained at least according to the capability information of the UE and the second secondary cell group configuration;

the UE comprises:

a third receiving module, configured to receive the first secondary cell group configuration and the second secondary cell group configuration;

a second configuration module to update a radio resource configuration using the first secondary cell group configuration and the second secondary cell group configuration.

18. The system of claim 17, wherein when the first secondary serving base station SeNB is a SeNB to be accessed, the first sending module comprises: