CN104105132B

CN104105132B - The sending method and device of a kind of control parameter

Info

Publication number: CN104105132B
Application number: CN201310116105.9A
Authority: CN
Inventors: 时洁; 柴丽; 张兴炜; 常俊仁
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-04-03
Filing date: 2013-04-03
Publication date: 2018-05-04
Anticipated expiration: 2033-04-03
Also published as: CN104105132A

Abstract

The invention discloses the sending method and device of a kind of control parameter, belong to wireless communication technology field.The described method includes：First network node obtains the control parameter of radio resource control rrc layer configuration；The control parameter that the rrc layer of acquisition configures is sent to terminal by the first network node；Wherein, the base station belonging to the main plot of the terminal is first base station.Using the present invention, the efficiency that control parameter is transmitted can be improved.

Description

Control parameter sending method and device

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for sending a control parameter.

Background

With the rapid development of wireless communication technology, an LTE (Long Term Evolution) network structure is changed from a pure macro base station homogeneous networking to a heterogeneous networking where a small base station and a macro base station are jointly deployed. The heterogeneous network is characterized in that the small cells belong to small base stations with relatively large density and relatively small range.

In a wireless communication system, each terminal is only required to establish an RRC (Radio resource control protocol) connection with a base station, and generally, the base station is the base station with the strongest signal for the terminal. In order to prevent a large amount of data interaction due to frequent handover of RRC connection, in the related art, it is specified that an RRC connection is established between a macro base station and a terminal in a heterogeneous network. Therefore, the characteristic of wide coverage of the macro base station is utilized, and the RRC connection does not need to be switched frequently. In the prior art, a control parameter configured in an RRC layer is issued to a terminal by a base station that establishes an RRC connection with the terminal, and a macro base station encapsulates the control parameter in a physical layer, and then sends the control parameter to an RRH (Remote Radio Head) having characteristics of a small cell, and then the RRH sends the control parameter to the terminal through a physical channel.

In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:

in the prior art, when a macro base station performs physical layer encapsulation on a control parameter, the design of an encapsulated data packet needs to be determined according to a channel state between an RRH and a terminal, however, for a heterogeneous network, due to delay of data transmission between the macro base station and a small base station, the data packet design of the macro base station performing physical layer encapsulation is not matched with the channel state when the small base station receives the data packet design, which will result in that the data packet cannot be normally sent, so that, in order to ensure that the data packet is normally sent, when the macro base station performs physical layer encapsulation on the control parameter, only the size of the data packet can be reduced, which will affect the efficiency of data transmission.

Disclosure of Invention

In order to solve the problems in the prior art, embodiments of the present invention provide a method and an apparatus for sending a parameter, so as to improve the efficiency of data transmission. The technical scheme is as follows:

in one aspect, a method for sending a control parameter is provided, where the method includes:

a first network node acquires control parameters configured by a Radio Resource Control (RRC) layer;

the first network node sends the acquired control parameters configured by the RRC layer to a terminal; and the base station to which the main cell of the terminal belongs is a first base station.

In another aspect, a method for transmitting a control parameter is provided, the method including:

a first base station acquires control parameters configured by a Radio Resource Control (RRC) layer;

and the first base station sends the acquired control parameters configured by the RRC layer to the terminal.

In another aspect, a method for sending a control parameter is provided, where the method includes:

and the terminal receives the control parameters configured by the RRC layer sent by the first network node or the first base station.

In yet another aspect, a first network node is provided, the first network node comprising:

the acquisition module is used for acquiring control parameters configured by a Radio Resource Control (RRC) layer;

a sending module, configured to send the acquired control parameter configured by the RRC layer to the terminal; and the base station to which the main cell of the terminal belongs is a first base station.

In another aspect, a first base station is provided, where the first base station includes:

and the sending module is used for sending the acquired control parameters configured by the RRC layer to the terminal.

In another aspect, a terminal is provided, where the terminal includes:

the receiving module is configured to receive a control parameter configured by a radio resource control protocol RRC layer and sent by the first network node or the first base station.

The technical scheme provided by the embodiment of the invention has the following beneficial effects:

in the embodiment of the invention, the control parameter of the configuration of the RRC layer acquired by the small network node can be a data packet encapsulated by the RRC layer, so that the control parameter can be encapsulated by the physical layer at the small network node, under the condition, the condition that the design of the data packet encapsulated by the physical layer directly received by the small network node is not matched with the channel state can not be generated, and a larger packet can be adopted when the channel state is better, thereby improving the efficiency of control parameter transmission.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a flowchart of a method for sending control parameters according to an embodiment of the present invention;

fig. 2 is a flowchart of a method for sending control parameters according to an embodiment of the present invention;

fig. 3 is a flowchart of a method for sending control parameters according to an embodiment of the present invention;

fig. 4 is a flowchart of a method for sending control parameters according to an embodiment of the present invention;

FIG. 5 is a diagram of a protocol stack provided by an embodiment of the present invention;

FIG. 6 is a diagram of a protocol stack provided by an embodiment of the present invention;

FIG. 7 is a diagram of a protocol stack provided by an embodiment of the present invention;

FIG. 8 is a diagram of a protocol stack provided by an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a first network node according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a first base station according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

For convenience of describing the scheme of the present invention, the first network node may refer to a small network node, and the first base station is a base station to which a terminal primary cell belongs. The first base station may be a macro base station. The base station of the first network node may be a second base station. The base station of the first network node may also be the first base station. In this embodiment of the present invention, any operation of the first base station may also refer to an operation performed by a cell of the first base station or a primary cell of the terminal, which is not limited herein.

Example one

An embodiment of the present invention provides a method for sending a control parameter, as shown in fig. 1, the method may include the following processing flows of a small base station:

step 101, a first network node obtains a control parameter configured in an RRC layer.

And 102, the first network node sends the acquired control parameters configured by the RRC layer to the terminal, wherein the base station to which the main cell of the terminal belongs is the first base station.

As shown in fig. 2, the method may further include the following processing procedure of the first base station:

step 201, the first base station obtains a control parameter configured in an RRC layer.

Step 202, the first base station sends the acquired control parameters configured by the RRC layer to the terminal.

In the embodiment of the invention, the control parameter of the configuration of the RRC layer acquired by the small network node can be a data packet encapsulated by the RRC layer, so that the control parameter can be encapsulated by the physical layer at the small network node, under the condition, the condition that the design of the data packet encapsulated by the physical layer directly received by the small network node is not matched with the channel state can not be generated, and a larger packet can be adopted when the channel state is better, thereby improving the efficiency of data transmission.

Example two

The embodiment of the invention provides a method for sending a control parameter, which can be applied to a heterogeneous network. For convenience of explanation of the present invention, the first network node may be a small network node, and the first base station may be a macro base station. Further, the base station of the small network node is preferably a small base station. The flow in fig. 1 will be described in detail with reference to a specific embodiment, in which a small network node is a small base station, and the specific contents may be as follows.

Step 101, the small base station obtains control parameters configured by an RRC layer.

The control parameter may be a bottom layer control parameter, and the bottom layer control parameter may include a Media Access Control (MAC) layer control parameter and/or a physical layer control parameter. The MAC layer control parameters are parameters for controlling the MAC layer, and may include one or more of the following parameters: DRX (Discontinuous Reception) configuration parameters, a scheduling request prohibit timer, a dedicated time synchronization timer, power reserve space configuration information, a slave cell deactivation timer, an extended scheduling request prohibit timer, extended power reserve space configuration information, uplink shared channel configuration information, and the like. Here, the uplink shared channel configuration information may further include maximum HARQ (hybrid automatic Repeat Request) retransmission times, whether TTI (transmission time Interval) bundling is possible, a periodic BSR (Buffer State Report) timer, and a BSR Report timer. The physical layer control parameter is a parameter for controlling the physical layer, and may include one or more of the following parameters: antenna Information, CQI (Channel Quality Index) report configuration Information, CSI-RS (Channel State Information-Reference Signal) configuration Information, reduced power CRS (Cell-specific Reference Signal) configuration Information, TRS (Tracking Reference Signal) configuration Information, DRS (discovery Reference Signal) configuration Information, Physical layer downlink shared Channel configuration dedicated Information, Physical layer hybrid ARQ (Automatic Repeat Request) indication Channel configuration Information, Physical layer uplink control Channel configuration dedicated Information, Physical layer uplink shared Channel configuration dedicated Information, SRS (sounding Reference Signal) uplink configuration Information, PDCCH (Physical downlink control Channel) for transmission power control of PUCCH (Physical layer uplink control Channel), physical layer downlink control channel), PDCCH configuration information for transmission power control of PUSCH (Physical uplink shared channel), uplink power control dedicated information, scheduling request configuration information, uplink antenna information, carrier indication field presence or absence information, and the like.

The control parameters may be mobility management control parameters, i.e. control parameters for the terminal to maintain an active link with a cell, base station or core network, and may include one or more of the following parameters: mobility control information, RRC layer measurement configuration information, security control information, NAS (Non Access Stratum) layer dedicated signaling, addition modification information of a secondary cell, release information of the secondary cell, security configuration information for RRC layer handover, and the like.

The Control parameter obtained in this step may be a Control parameter encapsulated to an RRC layer, a PDCP (Packet Data convergence protocol) layer, an RLC (Radio Link Control) layer, or an MAC layer.

Specifically, when the small base station obtains the control parameter configured in the RRC layer, the following specific processing manner may be adopted:

in the first mode, the small base station acquires control parameters sent by the macro base station and configured by one or more of an RRC layer of the macro base station, an RRC layer of the central control node, and an RRC layer of the core network node. In this processing method, first, the control parameter may be configured by an RRC layer of a macro base station to which the small base station belongs, may be configured by an RRC layer of an intermediate control node and then transmitted to the macro base station to which the small base station belongs, may be configured by an RRC layer of a core network node and then transmitted to the macro base station to which the small base station belongs, or may be any combination of the three cases. Then, the macro base station to which the small base station belongs sends the control parameters to the small base station. The core network node may be an MME (Mobility Management Entity).

And secondly, the small base station acquires the control parameters which are sent by the central control node and configured by the RRC layer of the central control node. In the processing mode, the control parameters are configured by the RRC layer of the central control node of the small base station and then are issued to the small base station without passing through the macro base station. In this case, the central control node may also send the control parameters to the macro base station to which the small base station belongs.

And thirdly, the small base station acquires the control parameters which are sent by the core network node and configured by the RRC layer of the core network node. In the processing mode, the control parameters are configured by the RRC layer of the core network node and then are issued to the small base station without passing through the macro base station. In this case, the core network node may also send the control parameters to the macro base station to which the small base station belongs.

In a fourth mode, the small base station acquires control parameters configured by its own RRC layer. In the method, the small-sized base station configures the control parameters by itself, and in this case, the small-sized base station can also send the control parameters to the macro base station to which the small-sized base station belongs. Preferably, the configured control parameters are underlying control parameters, and accordingly, the small base station may not record the definition of the first SRB mentioned below.

Specifically, the process of the small cell base station acquiring the control parameter configured in the RRC layer may be that the small cell base station receives information for configuring the control parameter in the RRC layer, and determines the control parameter configured in the RRC layer according to the information for configuring the control parameter in the RRC layer. This information for RRC layer configuration control parameters may be some trigger information or a basic parameter for calculating control parameters.

Preferably, after acquiring the control parameter configured in the RRC layer, the small base station may further include the following steps: and the small base station informs one or more of a macro base station, a central control node and a core network node of the acquired control parameters configured by the RRC layer. Therefore, the macro base station, the central control node and the core network node can conveniently schedule the terminal. The central control node may be a plurality of small base stations or a control node or a gateway of a cell of a small base station.

And 102, the small base station sends the acquired control parameters configured by the RRC layer to the terminal, wherein the base station to which the main cell of the terminal belongs is a macro base station. The base station to which the main cell of the terminal belongs is a macro base station, or the main cell of the terminal is a macro cell, that is, the terminal establishes an RRC connection with the macro base station.

Specifically, the small base station may directly send the acquired control parameter configured in the RRC layer to the terminal, and in addition, the small base station may also send the acquired control parameter configured in the RRC layer to a third-party network node (which may be a macro base station to which the small base station belongs), and the third-party network node sends the control parameter to the terminal.

Specifically, the small base station may send the acquired control parameter configured in the RRC layer to the terminal through an SRB or send the acquired control parameter to the terminal through a DRB (Data Radio bearer). Preferably, the small base station may further obtain indication information, where the indication information is used to indicate that the transmission mode of the control parameter configured in the RRC layer is SRB transmission or DRB transmission. The indication information may be configured by the macro base station, the central control node, or the core network node and sent to the small base station. Based on this, the sending process of the control parameter may specifically be: and the small network node sends the acquired control parameters configured by the RRC layer to the terminal through the SRB or sends the acquired control parameters to the terminal through the DRB according to the indication information. If the small-sized base station sends the control parameters through the SRB, the control parameters can be packaged in a PDCP layer and/or an RLC layer according to the SRB mode when being packaged; if the small base station sends the control parameters through the DRB, the control parameters can be encapsulated in the PDCP and/or RLC layer in the DRB manner when being encapsulated. Alternatively, if the small base station sends the control parameter through the DRB, the small base station or the macro base station may send, to the terminal, indication information that notifies the terminal that the DRB is a DRB for transmitting data originally carried by the SRB, so that the terminal decodes the corresponding data.

For the above situation of sending the control parameter configured in the RRC layer through the SRB, before the small base station sends the acquired control parameter configured in the RRC layer to the terminal through the SRB, the macro base station or the small base station may also notify the terminal to establish the SRB. The SRB may be a newly defined type of SRB (e.g., SRB3, SRB4, etc.). Specifically, the small base station may send a setup command to the terminal, so that the terminal sets up the SRB, where the setup command may carry information about the SRB to be set up. The terminal may return a reception acknowledgement after receiving the set-up command.

Preferably, after notifying the terminal to establish the SRB, the macro base station or the small base station may further notify the terminal to modify or delete the SRB. Specifically, the small base station may send a modification command or a deletion command to the terminal, so that the terminal modifies or deletes the SRB, where the modification command or the deletion command may carry information about the SRB to be modified or deleted.

For the above situation of sending the control parameter configured in the RRC layer through the DRB, before the small base station sends the acquired control parameter configured in the RRC layer to the terminal through the DRB, the macro base station or the small base station may also notify the terminal to establish the DRB. Preferably, after notifying the terminal to establish the DRB, the macro base station or the small base station may further notify the terminal to modify or delete the DRB.

In addition, the macro base station or the small base station may further acquire information of a network node that sends a message carried on the SRB, and notify the terminal of the information of the network node. The macro base station or the small base station may further acquire information of a network node that transmits a message carried on the DRB, and notify the terminal of the information of the network node. Here, the information of the network node transmitting the message carried on the SRB or the information of the network node transmitting the message carried on the DRB, among them, may refer to control parameter information configured by the RRC layer of the bearer or a message of the control plane. The information of the network node may include one or more of frequency information, identification information, IP (Internet Protocol) address information, IP proxy information, offload information of the network node, and the like. The identification information may be one or more of physical layer cell identification information, or base station identification information, or global cell identification information. The base station indicated by the information of the network node may be a small base station or a macro base station, and the cell indicated by the information of the network node may be a cell of the small base station or a cell of the macro base station, and in this embodiment, the small base station is preferred. The offloading information of the network node includes information of a decapsulation layer used by the network node when sending the message carried on the SRB, and/or information of a decapsulation layer used by the message carried on the SRB received by the network node. The offloading information of the network node includes information of a decapsulation layer used by the network node when sending the message carried on the DRB, and/or information of a decapsulation layer used by the message carried on the DRB received by the network node. For example, the decapsulated layer information received by the network node and used by the message carried on the SRB is the RRC layer, i.e., the control parameter may be a control parameter encapsulated by the RRC layer. For example, the decapsulation layer information used when the network node sends the message carried on the SRB is the PDCP layer, i.e., the control parameter is encapsulated to the physical layer through the PDCP layer at the network node side. For example, the decapsulation layer information used when the network node sends the message carried on the SRB is the PDCP layer, the RLC layer, and the MAC layer, that is, the control parameter is encapsulated to the MAC layer through the PDCP layer at the network node side, and whether the control parameter is encapsulated to the physical layer is not described here. Optionally, after receiving the information, the terminal may establish a PDCP entity, an RLC entity, or an MAC entity corresponding to the SRB or the DRB and corresponding to the network node, so as to decapsulate the data packet. When the control parameter may be a control parameter encapsulated by the RRC layer, the terminal may establish a PDCP entity, an RLC entity, and a MAC entity corresponding to the SRB or the DRB and corresponding to the network node in order to decapsulate the data packet. When the control parameter may be a control parameter encapsulated by the PDCP layer, the terminal may establish an RLC entity and a MAC entity corresponding to the SRB or the DRB and corresponding to the network node in order to decapsulate the data packet. When the control parameter may be a control parameter encapsulated by the RLC layer, the terminal may establish a MAC entity corresponding to the SRB or DRB and corresponding to the network node in order to decapsulate the data packet. Optionally, the macro base station or the small base station sends configuration information to the terminal, where the configuration information configures one or more of a PDCP entity, an RLC entity, and an MAC entity, which correspond to the network node that sends the control parameter on the SRB, to be established by the terminal, so that the terminal decapsulates the data packet. The configuration information in the configuration information sent by the macro base station or the small base station may include information of a layer to be established on the terminal side for decapsulation, and flag information and bearer type information of a network node corresponding to the layer. Optionally, the macro base station or the small base station sends configuration information to the terminal, where the configuration information configures one or more of a PDCP entity, an RLC entity, and an MAC entity that the terminal establishes and corresponds to the network node that sends the control parameter on the DRB, so that the terminal decapsulates the data packet. The configuration information in the configuration information sent by the macro base station or the small base station may include information of a layer to be established on the terminal side for decapsulation, and flag information and bearer type information of a network node corresponding to the layer. The mark information of the network node comprises one or more of frequency information, identification information, IP (Internet Protocol) address information, IP agent information, base station type and cell type of the network node. The correspondence may be peer-to-peer.

Specifically, when the control parameter is a mobility management control parameter, the small base station sends the acquired mobility management control parameter configured in the RRC layer to the terminal through a first SRB (Signaling Radio bearer); and when the control parameter is a bottom layer control parameter, the small base station sends the acquired bottom layer control parameter configured by the RRC layer to the terminal through the second SRB. Wherein the first SRB and the second SRB are different types of SRB. Preferably, the small base station may receive indication information (sent by the macro base station or the central control node), where the indication information is used to indicate that the sending method of the mobility management control parameter configured in the RRC layer is sent through the first SRB, and is used to indicate that the sending method of the underlay control parameter configured in the RRC layer is sent through the second SRB.

Preferably, before the small base station sends the acquired mobility management control parameter configured in the RRC layer to the terminal through the first SRB, the macro base station or the small base station may notify the terminal to establish the first SRB; and/or before the small base station sends the acquired bottom layer control parameters configured by the RRC layer to the terminal through the second SRB, the macro base station or the small base station can inform the terminal to establish the second SRB. Wherein the first and second SRBs may be newly defined types of SRBs (e.g., SRB3, SRB4, etc.). Specifically, the small base station may send a setup command to the terminal, so that the terminal sets up the first SRB and/or the second SRB, where the setup command may carry information about the SRB to be set up. The terminal may return a reception acknowledgement after receiving the set-up command.

Preferably, the first SRB may be defined as a mobility management SRB for issuing the mobility management control parameter, and the second SRB may be defined as a bottom-layer SRB for issuing the bottom-layer control parameter.

Preferably, after notifying the terminal to establish the first SRB, the macro base station or the small base station may further notify the terminal to modify or delete the first SRB. After the terminal is notified to establish the second SRB, the macro base station or the small base station may also notify the terminal to modify or delete the second SRB. Specifically, the small base station may send a modification command or a deletion command to the terminal, so that the terminal modifies or deletes the first SRB and/or the second SRB, where the modification command or the deletion command may carry information about the SRB to be modified or deleted.

In addition, the macro base station or the small base station may further acquire information of a network node that sends the message carried on the first SRB, and notify the terminal of the information of the network node. The macro base station or the small base station may further acquire information of a network node that sends the message carried on the second SRB, and notify the terminal of the information of the network node. The information of the network node that sends the message carried on the first SRB or the information of the network node that sends the message carried on the second SRB may refer to control parameter information configured in the RRC layer of the bearer or a message of the control plane. The network node may be a small base station or a macro base station. In this embodiment a small base station is preferred. The information of the network node may include one or more of frequency information, identification information, IP (Internet Protocol) address information, IP proxy information, offload information of the network node, and the like. The identification information may be one or more of physical layer cell identification information, or base station identification information, or global cell identification information. The base station indicated by the node information of the network may be a small base station or a macro base station, and the cell indicated by the node information of the network may be a cell of the small base station or a cell of the macro base station, and in this embodiment, the small base station is preferred. The offloading information of the network node includes information of a decapsulation layer used by the network node when sending the message carried on the first SRB, and/or information of a decapsulation layer used by the message carried on the first SRB received by the network node. The offloading information of the network node includes information of a decapsulation layer used by the network node when sending the message carried on the second SRB, and/or information of a decapsulation layer used by the message carried on the second SRB received by the network node. For example, the decapsulated layer information received by the network node and used by the message carried on the first SRB is the RRC layer, i.e., the control parameter may be a control parameter encapsulated by the RRC layer. For example, the decapsulation layer information used when the network node sends the message carried on the first SRB is the PDCP layer, i.e., the control parameters are encapsulated to the physical layer through the PDCP layer at the network node side. For example, the decapsulation layer information used when the network node sends the message carried on the SRB is the PDCP layer, the RLC layer, and the MAC layer, i.e., the control parameter is encapsulated to the MAC layer through the PDCP layer at the network node side, and there is no convention here if the control parameter is encapsulated to the physical layer. Optionally, after receiving the information, the terminal may establish a PDCP entity, an RLC entity, or an MAC entity corresponding to the first SRB or the second SRB and corresponding to the network node, so as to decapsulate the data packet. When the control parameter may be a control parameter encapsulated by the RRC layer, the terminal may establish a PDCP entity, an RLC entity, and a MAC entity corresponding to the first SRB or the second SRB and corresponding to the network node, so as to decapsulate the data packet. When the control parameter may be a control parameter encapsulated by the PDCP layer, the terminal may establish an RLC entity and a MAC entity corresponding to the first SRB or the second SRBB and corresponding to the network node so as to decapsulate the data packet. When the control parameter may be a control parameter encapsulated by the RLC layer, the terminal may establish a MAC entity corresponding to the first SRB or the second SRB and corresponding to the network node so as to decapsulate the data packet. Optionally, the macro base station or the small base station sends configuration information to the terminal, where the configuration information configures one or more of a PDCP entity, an RLC entity, and an MAC entity, which correspond to the network node where the first SRB sends the control parameter, to be established by the terminal, so that the terminal decapsulates the data packet. The configuration information in the configuration information sent by the macro base station or the small base station may include information of a layer to be established on the terminal side for decapsulation, and flag information and bearer type information of a network node corresponding to the layer. The mark information of the network node comprises one or more of frequency information, identification information, IP (Internet Protocol) address information, IP agent information, base station type and cell type of the network node. Optionally, the macro base station or the small base station sends configuration information to the terminal, where the configuration information configures one or more of a PDCP entity, an RLC entity, and an MAC entity that the terminal establishes and corresponds to the network node that sends the control parameter on the second SRB, so that the terminal decapsulates the data packet. The configuration information in the configuration information sent by the macro base station or the small base station may include information of a layer to be established on the terminal side for decapsulation, and flag information and bearer type information of a network node corresponding to the layer. The mark information of the network node comprises one or more of frequency information, identification information, IP (Internet Protocol) address information, IP agent information, base station type and cell type of the network node. The correspondence may be peer-to-peer.

In this embodiment of the present invention, when the control parameter is a control parameter used for signal quality measurement (e.g., antenna information, CQI report configuration information, CSI-RS configuration information, reduced power CRS configuration information, TRS configuration information, DRS configuration information, etc.), the small base station may further receive information fed back by the terminal according to the control parameter, and when the small base station determines that the terminal satisfies a condition for performing a bottom layer handover according to the information fed back by the terminal (i.e., the information fed back by the terminal to the small base station according to the received control parameter used for signal quality measurement), the small base station performs the bottom layer handover on the terminal. The bottom layer handover is a DRB handover, which is a handover of a service data stream of a terminal or a service data packet of the terminal, that is, a handover of a small base station is performed. Of course, the underlay handover may also be understood as performing handover on multiple cells serving the terminal or a base station to which the cells belong, and may keep the primary cell of the terminal unchanged or the serving cell connected to the MME or SGW of the core network unchanged.

Specifically, the small cell base station may receive a measurement report of the signal quality fed back by the terminal (which may include a measurement report for the small cell base station and may also include a measurement report for a neighboring small cell base station), and according to the measurement report, if the signal quality of the small cell base station at the terminal is lower than that of the neighboring small cell base station, the terminal may be subjected to an underlay handover, and the target small cell base station for the handover may be the small cell base station with the highest signal quality for the terminal. In addition, the small base station may receive a reference signal transmitted by the terminal, and the small base station may measure the signal quality according to the reference signal, and may perform a handover to the terminal in a lower layer when the signal quality is low.

Specifically, the process of the small base station performing the bottom layer handover on the terminal may be performed according to the following method:

method 1

First, the small cell base station determines a target small cell base station for handover and sends an underlay handover request to the target small cell base station.

Specifically, the small cell base station may select, according to the measurement report fed back by the terminal, the small cell base station having the highest signal quality for the terminal as the target small cell base station, or may immediately select an adjacent small cell base station as the target small cell base station.

Then, the small base station receives the underlayer switching request confirmation fed back by the target small base station.

And finally, the small base station sends a bottom layer switching command carrying the identification of the target small base station to the terminal so that the terminal performs bottom layer switching to the target small base station.

Specifically, the process of performing the underlay handover from the terminal to the target small-sized base station may be that the terminal sends an Access scrambling code to the target small-sized base station according to the Radio identifier information in the underlay handover command, and receives an RAR (Random Access Response) message returned by the target small-sized base station, where the RAR message carries TA (Timing Advance) information and/or C-RNTI (Cell Radio Network temporary identifier) information of the target small-sized base station, and then the terminal sends uplink data to the target small-sized base station. Optionally, the terminal may further receive reconfiguration or reestablishment information sent by the target small cell base station thereafter.

In addition, the process of performing the bottom layer handover from the terminal to the target small base station may also be that the TA information and/or the C-RANT information of the target small base station are carried in the bottom layer handover command received by the terminal, and the terminal may directly receive the PDCCH command of the target small base station according to the information, so as to activate the connection between the terminal and the target small base station. Optionally, the terminal may further receive reconfiguration or reestablishment information sent by the target small base station.

Method two

First, the small cell base station determines a target small cell base station for handover and sends an underlay handover request to the target small cell base station. The method of selecting the target small bs is similar to that in the first method, and reference may be made to the first method.

Then, the small base station receives the underlayer switching request confirmation fed back by the target small base station, or the target small base station confirms the underlayer switching request through the macro base station. The macro base station may forward the underlay handover request and the underlay handover request acknowledgement.

And finally, the small base station or the macro base station sends a bottom layer switching command carrying the identification of the target small base station to the terminal so that the terminal can perform bottom layer switching to the target small network node. The specific process is similar to that in the first method, and reference can be made to the first method.

Method III

First, the small base station determines a target small base station for handover, and sends an underlay handover request to the target small base station through the macro base station. The method of selecting the target small bs is similar to that in the first method, and reference may be made to the first method.

And then, the small base station receives the underlayer switching request confirmation fed back by the target small base station through the macro base station. And the macro base station forwards the bottom layer switching request and the bottom layer switching request confirmation.

And finally, the small base station or the macro base station sends a bottom layer switching command carrying the identification of the target small base station to the terminal so that the terminal can perform bottom layer switching to the target small base station. The specific process is similar to that in the first method, and reference can be made to the first method.

Method IV

First, the small base station sends an underlay handover request to the macro base station, so that the macro base station selects a target small base station, and sends the underlay handover request or an underlay handover request reconfigured for the target small base station to the target small base station.

Specifically, the macro base station may select the target small base station according to the measurement report carried in the underlay handover request, and in addition, the terminal may also report the measurement report to the macro base station, and then the macro base station selects the target small base station.

After receiving the bottom layer switching request, the macro base station can directly forward the request to the selected target small base station. In addition, preferably, the macro base station may reconfigure the appropriate underlay handover request for the target small base station according to the information about the target small base station, and send the reconfigured underlay handover request to the target small base station.

And then, the small base station receives the underlayer switching request confirmation fed back by the target small base station through the macro base station.

The flow in fig. 2 will be described in detail with reference to specific embodiments, and specific contents may be as follows.

Step 201, the macro base station obtains the control parameters configured by the RRC layer. The control parameter may be an underlying control parameter or a mobility management control parameter, and the underlying control parameter may include a MAC layer control parameter and/or a physical layer control parameter. The detailed contents of step 101 can be referred to for specific parameters included in the mobility management control parameters and the underlying control parameters, and will not be described in detail here. The control parameters acquired in this step may be control parameters encapsulated to the RRC layer, PDCP layer, RLC layer, or MAC layer.

Specifically, the process of the macro base station acquiring the control parameter configured in the RRC layer may be performed according to the following specific processing manners: the macro base station acquires control parameters which are sent by the central control node and configured by an RRC layer of the central control node; or, the macro base station acquires the control parameter configured by the RRC layer of the core network node, which is sent by the core network node (which may be an MME); or the macro base station acquires control parameters configured by the RRC layer of the macro base station; or the macro base station acquires the control parameters configured by the RRC layer sent by the small base station. The central control node may be a plurality of small base stations or a control node or a gateway of a cell of a small base station.

Specifically, the process of the macro base station acquiring the control parameter configured by the RRC layer may be that the macro base station receives information for configuring the control parameter by the RRC layer, and determines the control parameter configured by the RRC layer according to the information for configuring the control parameter by the RRC layer. This information for RRC layer configuration control parameters may be some trigger information or a basic parameter for calculating control parameters.

Step 202, the macro base station sends the acquired control parameters configured by the RRC layer to the terminal.

Specifically, the macro base station may send the acquired control parameter configured in the RRC layer to the small base station, and the small base station sends the received control parameter to the terminal; or, the macro base station may also directly send the acquired control parameters configured in the RRC layer to the terminal. For the mobility management control parameter, preferably, the macro base station may send the acquired mobility management control parameter configured in the RRC layer to the small base station, and the small base station sends the received mobility management control parameter to the terminal. For the underlay control parameters, preferably, the macro base station may send the acquired underlay control parameters configured by the RRC layer to the small base station.

In addition, for the mobility management control parameters, the macro base station may also send the parameters to the terminal in a manner of shunting by the PDCP layer, the RLC layer, and the MAC layer of the small base station. For example, in the case of offloading in the RLC layer of the small base station, the macro base station may encapsulate the mobility management control parameter in the PDCP layer, send the packet encapsulated in the PDCP layer to the small base station, and then encapsulate the packet from the RLC layer to the physical layer by the small base station, and send the packet to the terminal. For another example, the macro base station may encapsulate the mobility management control parameters into the RLC layer, then send the RLC layer encapsulated data packet to the small base station, and then encapsulate the data packet from the MAC layer to the physical layer by the small base station, and send the data packet to the terminal.

Specifically, the process of sending the received control parameter to the terminal by the small base station may be: and the small network node sends the received control parameters to the terminal through the SRB or sends the control parameters to the terminal through the DRB. Preferably, the macro base station may send, to the small base station, indication information indicating that the sending manner of the control parameter configured in the RRC layer is SRB sending or DRB sending. Based on this, the process of the small bs sending the received control parameter to the terminal may specifically be: and the small network node sends the received control parameters to the terminal through the SRB or sends the control parameters to the terminal through the DRB according to the indication information. The specific processing can be referred to the specific description in step 102, and will not be described in detail here.

Specifically, the processing procedure in which the macro base station directly sends the acquired control parameter configured in the RRC layer to the terminal may specifically be: and the macro base station sends the acquired control parameters configured by the RRC layer to the terminal through the SRB or sends the acquired control parameters to the terminal through the DRB. The specific processing is similar to that of the small base station side, and will not be described again here.

Preferably, before the macro base station sends the acquired control parameters configured in the RRC layer to the terminal through the SRB, the macro base station or the small base station may notify the terminal to establish the SRB; before the macro base station sends the acquired control parameters configured by the RRC layer to the terminal through the DRB, the macro base station or the small base station can inform the terminal to establish the DRB. The specific processing is similar to that of the small base station side, and will not be described again here.

Preferably, after the terminal is notified to establish the SRB, the macro base station or the small network node may further notify the terminal to modify or delete the SRB; after the terminal is notified to establish the DRB, the macro base station or the small base station may also notify the terminal to modify or delete the DRB. The specific processing is similar to that of the small base station side, and will not be described again here.

In addition, the macro base station or the small base station may further acquire information of a network node that sends a message carried on the SRB, and notify the terminal of the information of the network node. The macro base station or the small base station may further acquire information of a network node that transmits a message carried on the DRB, and notify the terminal of the information of the network node. The information of the network node that sends the message carried on the SRB or the information of the network node that sends the message carried on the DRB may refer to control parameter information configured in the RRC layer of the bearer or a message of the control plane. The network node may be a small station or a macro station. In the present embodiment, a macro base station is preferred. The information of the network node may include one or more of frequency information, identification information, IP address information, IP proxy information, offload information of the network node, and the like. The identification information may be one or more of physical layer cell identification information, or base station identification information, or global cell identification information. The base station indicated by the information of the network node may be a small base station or a macro base station, and the cell indicated by the information of the network node may be a cell of the small base station or a cell of the macro base station, and is preferably a macro base station in this embodiment. The offloading information of the network node includes information of a decapsulation layer used by the network node when sending the message carried on the SRB, and/or information of a decapsulation layer used by the message carried on the SRB received by the network node. The offloading information of the network node includes information of a decapsulation layer used by the network node when sending the message carried on the DRB, and/or information of a decapsulation layer used by the message carried on the DRB received by the network node. For example, the decapsulated layer information received by the network node and used by the message carried on the SRB is the RRC layer, i.e., the control parameter may be a control parameter encapsulated by the RRC layer. For example, the decapsulation layer information used when the network node sends the message carried on the SRB is the PDCP layer, i.e., the control parameter is encapsulated to the physical layer through the PDCP layer at the network node side. For example, the decapsulation layer information used when the network node sends the message carried on the SRB is the PDCP layer, the RLC layer, and the MAC layer, that is, the control parameter is encapsulated to the MAC layer through the PDCP layer at the network node side, and whether the control parameter is encapsulated to the physical layer is not described here. Optionally, after receiving the information, the terminal may establish a PDCP entity, an RLC entity, or an MAC entity corresponding to the SRB or the DRB and corresponding to the network node, so as to decapsulate the data packet. When the control parameter may be a control parameter encapsulated by the RRC layer, the terminal may establish a PDCP entity, an RLC entity, and a MAC entity corresponding to the SRB or the DRB and corresponding to the network node in order to decapsulate the data packet. When the control parameter may be a control parameter encapsulated by the PDCP layer, the terminal may establish an RLC entity and a MAC entity corresponding to the SRB or the DRB and corresponding to the network node in order to decapsulate the data packet. When the control parameter may be a control parameter encapsulated by the RLC layer, the terminal may establish a MAC entity corresponding to the SRB or DRB and corresponding to the network node in order to decapsulate the data packet. Optionally, the macro base station or the small base station sends configuration information to the terminal, where the configuration information configures one or more of a PDCP entity, an RLC entity, and an MAC entity, which correspond to the network node that sends the control parameter on the SRB, to be established by the terminal, so that the terminal decapsulates the data packet. The configuration information in the configuration information sent by the macro base station or the small base station may include information of a layer to be established on the terminal side for decapsulation, and flag information and bearer type information of a network node corresponding to the layer. The mark information of the network node comprises one or more of frequency information, identification information, IP (Internet Protocol) address information, IP agent information, base station type and cell type of the network node. Optionally, the macro base station or the small base station sends configuration information to the terminal, where the configuration information configures one or more of a PDCP entity, an RLC entity, and an MAC entity that the terminal establishes and corresponds to the network node that sends the control parameter on the DRB, so that the terminal decapsulates the data packet. The configuration information in the configuration information sent by the macro base station or the small base station may include information of a layer to be established on the terminal side for decapsulation, and flag information and bearer type information of a network node corresponding to the layer. The mark information of the network node comprises one or more of frequency information, identification information, IP (Internet Protocol) address information, IP agent information, base station type and cell type of the network node. The correspondence may be peer-to-peer. The correspondence may be peer-to-peer. Specifically, when the control parameter is a mobility management control parameter, the macro base station may send the acquired mobility management control parameter configured in the RRC layer to the terminal through the first SRB; when the control parameter is a base layer control parameter, the macro base station may send the acquired base layer control parameter configured in the RRC layer to the terminal through the second SRB. Wherein the first SRB and the second SRB are different types of SRB. Wherein the first and second SRBs may be newly defined types of SRBs (e.g., SRB3, SRB4, etc.). Preferably, the first SRB may be defined as a mobility management SRB for issuing the mobility management control parameter, and the second SRB may be defined as a bottom-layer SRB for issuing the bottom-layer control parameter.

Preferably, before the macro base station sends the acquired mobility management control parameter configured in the RRC layer to the terminal through the first SRB, the macro base station or the small base station may notify the terminal to establish the first SRB; and/or before the macro base station sends the acquired bottom layer control parameters configured by the RRC layer to the terminal through the second SRB, the macro base station or the small base station can inform the terminal to establish the second SRB. Preferably, after the terminal is notified to establish the first SRB, the macro base station or the small base station may further notify the terminal to modify or delete the first SRB; and/or after the terminal is informed of establishing the second SRB, the macro base station or the small base station may further inform the terminal of modifying or deleting the second SRB. The specific processing procedure is similar to that in step 102, and will not be described again here.

In addition, the macro base station or the small base station can also acquire the information of the network node which sends the message carried on the first SRB and inform the terminal of the information of the network node; and/or the macro base station or the small base station may further acquire information of a network node that sends the message carried on the second SRB, and notify the terminal of the information of the network node. The information of the network node that sends the message carried on the first SRB or the information of the network node that sends the message carried on the second SRB may refer to control parameter information configured in the RRC layer of the bearer or a message of the control plane. The network node may be a small base station or a macro base station. In the present embodiment, a macro base station is preferred. The information of the network node may include one or more of frequency information, identification information, IP (Internet Protocol) address information, IP proxy information, offload information of the network node, and the like. The identification information may be one or more of physical layer cell identification information, or base station identification information, or global cell identification information. The base station indicated by the information of the network node may be a small base station or a macro base station, and the cell indicated by the information of the network node may be a cell of the small base station or a cell of the macro base station, and is preferably a macro base station in this embodiment. The offloading information of the network node includes information of a decapsulation layer used by the network node when sending the message carried on the first SRB, and/or information of a decapsulation layer used by the message carried on the first SRB received by the network node. The offloading information of the network node includes information of a decapsulation layer used by the network node when sending the message carried on the second SRB, and/or information of a decapsulation layer used by the message carried on the second SRB received by the network node. For example, the decapsulated layer information received by the network node and used by the message carried on the first SRB is the RRC layer, i.e., the control parameter may be a control parameter encapsulated by the RRC layer. For example, the decapsulation layer information used when the network node sends the message carried on the first SRB is the PDCP layer, i.e., the control parameters are encapsulated to the physical layer through the PDCP layer at the network node side. For example, the decapsulation layer information used when the network node sends the message carried on the SRB is the PDCP layer, the RLC layer, and the MAC layer, i.e., the control parameter is encapsulated to the MAC layer through the PDCP layer at the network node side, and there is no convention here if the control parameter is encapsulated to the physical layer. Optionally, after receiving the information, the terminal may establish a PDCP entity, an RLC entity, or an MAC entity corresponding to the first SRB or the second SRB and corresponding to the network node, so as to decapsulate the data packet. When the control parameter may be a control parameter encapsulated by the RRC layer, the terminal may establish a PDCP entity, an RLC entity, and a MAC entity corresponding to the first SRB or the second SRB and corresponding to the network node, so as to decapsulate the data packet. When the control parameter may be a control parameter encapsulated by the PDCP layer, the terminal may establish an RLC entity and a MAC entity corresponding to the first SRB or the second SRBB and corresponding to the network node so as to decapsulate the data packet. When the control parameter may be a control parameter encapsulated by the RLC layer, the terminal may establish a MAC entity corresponding to the first SRB or the second SRB and corresponding to the network node so as to decapsulate the data packet. Optionally, the macro base station or the small base station sends configuration information to the terminal, where the configuration information configures one or more of a PDCP entity, an RLC entity, and an MAC entity, which correspond to the network node where the first SRB sends the control parameter, to be established by the terminal, so that the terminal decapsulates the data packet. The configuration information in the configuration information sent by the macro base station or the small base station may include information of a layer to be established on the terminal side for decapsulation, and flag information and bearer type information of a network node corresponding to the layer. The mark information of the network node comprises one or more of frequency information, identification information, IP (Internet Protocol) address information, IP agent information, base station type and cell type of the network node. Optionally, the macro base station or the small base station sends configuration information to the terminal, where the configuration information configures one or more of a PDCP entity, an RLC entity, and an MAC entity that the terminal establishes and corresponds to the network node that sends the control parameter on the second SRB, so that the terminal decapsulates the data packet. The configuration information in the configuration information sent by the macro base station or the small base station may include information of a layer to be established on the terminal side for decapsulation, and flag information and bearer type information of a network node corresponding to the layer. The mark information of the network node comprises one or more of frequency information, identification information, IP (Internet Protocol) address information, IP agent information, base station type and cell type of the network node. The correspondence may be peer-to-peer.

Preferably, if the control parameter is a mobility management control parameter, the specific implementation procedure of step 202 may be: and the macro base station sends the acquired mobility management control parameters configured by the RRC layer to the terminal through the first SRB. Correspondingly, before the macro base station sends the acquired mobility management control parameters configured in the RRC layer to the terminal through the first SRB, the macro base station or the small base station may also notify the terminal to establish the first SRB. If the first SRB needs to be modified or deleted, after the terminal is notified to establish the first SRB, the macro base station or the small base station may also notify the terminal to modify or delete the first SRB. In addition, the macro base station or the small base station may further acquire information of a network node that sends the message carried on the first SRB, and notify the terminal of the information of the network node. The specific processing is similar to the specific process in step 102, and will not be described again here. The information of the network node that sends the message carried on the first SRB refers to control parameter information configured in the RRC layer of the bearer or a message of the control plane. The information of the network node may include one or more of frequency information, identification information, IP (Internet Protocol) address information, IP proxy information, offload information of the network node, and the like. The identification information may be one or more of physical layer cell identification information, or base station identification information, or global cell identification information. The base station indicated by the information of the network node may be a small base station or a macro base station, and the cell indicated by the information of the network node may be a cell of the small base station or a cell of the macro base station, and is preferably a macro base station in this embodiment. The offloading information of the network node includes information of a decapsulation layer used by the network node when sending the message carried on the first SRB, and/or information of a decapsulation layer used by the message carried on the first SRB received by the network node. For example, the decapsulated layer information received by the network node and used by the message carried on the first SRB is the RRC layer, i.e., the control parameter may be a control parameter encapsulated by the RRC layer. For example, the decapsulation layer information used when the network node sends the message carried on the first SRB is the PDCP layer, i.e., the control parameters are encapsulated to the physical layer through the PDCP layer at the network node side. For example, the decapsulation layer information used when the network node sends the message carried on the SRB is the PDCP layer, the RLC layer, and the MAC layer, i.e., the control parameter is encapsulated to the MAC layer through the PDCP layer at the network node side, and there is no convention here if the control parameter is encapsulated to the physical layer. Optionally, after receiving the information, the terminal may establish a PDCP entity, an RLC entity, or an MAC entity corresponding to the first SRB and corresponding to the network node, so as to decapsulate the data packet. When the control parameter may be a control parameter encapsulated by the RRC layer, the terminal may establish a PDCP entity, an RLC entity, and a MAC entity corresponding to the first SRB and corresponding to the network node, so as to decapsulate the data packet. When the control parameter may be a control parameter encapsulated by the PDCP layer, the terminal may establish an RLC entity and an MAC entity corresponding to the first SRB and the network node so as to decapsulate the data packet. When the control parameter may be a control parameter encapsulated by the RLC layer, the terminal may establish a MAC entity corresponding to the first SRB and corresponding to the network node so as to decapsulate the data packet. Optionally, the macro base station or the small base station sends configuration information to the terminal, where the configuration information configures one or more of a PDCP entity, an RLC entity, and an MAC entity that the terminal establishes and corresponds to the network node that sends the control parameter on the first SRB, so that the terminal decapsulates the data packet. The configuration information in the configuration information sent by the macro base station or the small base station may include information of a layer to be established on the terminal side for decapsulation, and flag information and bearer type information of a network node corresponding to the layer. The mark information of the network node comprises one or more of frequency information, identification information, IP (Internet Protocol) address information, IP agent information, base station type and cell type of the network node. The correspondence may be peer-to-peer.

In the embodiment of the present invention, in the process of performing bottom layer handover on the terminal, the processing process of the macro base station may be as follows:

the macro base station may forward the underlay switching request sent by the small base station, that is, the macro base station receives the underlay switching request carrying the identifier of the target small base station and sent by the small base station, and forwards the underlay switching request to the target small base station.

The macro base station may further forward the bottom layer handover request acknowledgement sent by the target small base station, that is, the macro base station receives the bottom layer handover request acknowledgement fed back by the target small base station, and forwards the bottom layer handover request acknowledgement to the small base station.

In addition, the macro base station may send an underlay handover command carrying the identifier of the target small base station to the terminal, so that the terminal performs underlay handover to the target small base station. The procedure of the terminal performing the underlay handover to the target small base station may refer to the foregoing detailed description, and will not be described herein again.

In addition, in the process of performing bottom layer handover on the terminal, the processing process of the macro base station may also be:

when the macro base station receives a bottom layer switching request sent by the small base station, a target small base station is selected, and the bottom layer switching request or the bottom layer switching request reconfigured for the target small base station is sent to the target small base station. The specific processing procedures can refer to the specific description above, and will not be described in detail herein.

The macro base station can also forward the bottom layer switching request confirmation sent by the target small base station, namely the macro base station receives the bottom layer switching request confirmation fed back by the target small base station and forwards the bottom layer switching request confirmation to the small base station;

In the sending method of the control parameter provided in the embodiment of the present invention, a processing flow at a terminal side may be as follows: and the terminal receives the control parameters of the RRC layer configuration sent by the first network node or the first base station. Specifically, the terminal may receive the control parameter configured in the RRC layer and sent by the first network node or the first base station through the SRB or the DRB. The specific process can refer to the above content of the embodiment.

Preferably, before the terminal receives the control parameter configured in the RRC layer sent by the first network node or the first base station through the SRB or the DRB, the following processing may be further performed: the terminal receives a notification sent by a first base station or a first network node, wherein the notification carries information of the network node which sends the information carried on the SRB or the DRB; the terminal establishes a PDCP entity, an RLC entity and an MAC entity corresponding to the network node according to the shunting information in the information of the network node, or establishes an RLC entity and an MAC entity corresponding to the network node, or establishes an MAC entity corresponding to the network node. For concrete contents, reference may be made to the above contents of the present embodiment.

Or, preferably, before the terminal receives the control parameter configured in the RRC layer sent by the first network node or the first base station through the SRB or the DRB, the following processing may be further performed: a terminal receives configuration information sent by a first base station or a first network node; the terminal establishes a PDCP entity, an RLC entity and an MAC entity corresponding to a network node which sends the SRB or the message loaded on the DRB according to the indication of the configuration information, or establishes the RLC entity and the MAC entity corresponding to the network node, or establishes the MAC entity corresponding to the network node. For concrete contents, reference may be made to the above contents of the present embodiment. In the embodiment of the invention, the control parameter of the configuration of the RRC layer acquired by the small network node can be a data packet encapsulated by the RRC layer, so that the control parameter can be encapsulated by the physical layer at the small network node, under the condition, the condition that the design of the data packet encapsulated by the physical layer directly received by the small network node is not matched with the channel state can not be generated, and a larger packet can be adopted when the channel state is better, thereby improving the efficiency of data transmission. Of course, it can also be PDCP, RLC, or MAC layer encapsulated data packet.

The configuration information in the configuration information sent by the first network node or the first base station may include information of a layer to be established by the terminal side for decapsulation, and flag information and bearer type information of a network node corresponding to the layer. The mark information of the network node comprises one or more of frequency information, identification information, IP (Internet Protocol) address information, IP agent information, base station type and cell type of the network node.

EXAMPLE III

The sending method of the control parameter provided in the embodiment of the present invention will be described in detail below with reference to an application scenario in which a terminal performs a bottom layer handover, and as shown in fig. 3, the flow of the bottom layer handover may include the following steps:

in step 301, the source small bs sends the control parameters configured in its RRC layer for signal quality measurement to the terminal through the bottom SRB.

Step 302, the terminal sends a measurement report or a reference signal of the terminal to the source small cell base station.

And step 303, the source small base station determines to initiate bottom layer handover to the terminal according to the measurement report or the reference signal, and selects the target small base station.

In step 304, the source small base station sends a bottom layer handover request to the target small base station.

In step 305, the target small cell returns an underlay handover request acknowledgement to the source small cell.

Step 306, the source small base station sends a bottom layer switching command to the terminal. The underlay handover command may carry an identifier of the target small bs and radio identifier information.

Step 307, the terminal initiates a bottom layer handover process to the target small base station. The specific process can be seen in the above examples.

Example four

The sending method of the control parameter provided in the embodiment of the present invention will be described in detail below with reference to an application scenario in which another terminal performs a bottom layer handover, and as shown in fig. 4, the flow of the bottom layer handover may include the following steps:

in step 401, the source small bs sends the control parameters configured in its RRC layer for signal quality measurement to the terminal through the underlying SRB.

In step 402, the terminal sends a measurement report or a reference signal of the terminal to the source small cell base station.

And step 403, the source small base station determines to initiate bottom layer handover to the terminal according to the measurement report or the reference signal.

Step 404, the source small base station sends a bottom layer handover request to the macro base station.

In step 405, the macro base station selects a target small base station.

In step 406, the macro base station sends the underlay handover request or the underlay handover request reconfigured for the target small base station to the target small base station.

Step 407, the target small base station returns a bottom layer handover request acknowledgement to the macro base station.

In step 408, the macro base station sends a bottom layer handover request acknowledgement to the source small base station.

Step 409, the source small-sized base station sends a bottom layer switching command to the terminal. The underlay handover command may carry an identifier of the target small bs and radio identifier information.

In step 410, the terminal initiates a bottom layer handover process to the target small base station. The specific process can be seen in the above examples.

EXAMPLE five

In combination with a specific application scenario, a processing flow of the method for sending the control parameter provided by the embodiment of the present invention may include the following steps:

step one, a macro base station acquires control parameters configured by an RRC layer of the macro base station.

And step two, the macro base station sends the acquired control parameters configured by the RRC layer to the terminal.

EXAMPLE six

And step two, the macro base station sends the acquired control parameters configured by the RRC layer to the terminal through the small base station. The sending may be performed in a SRB or DRB manner, or may be performed in a PDCP layer or an RLC layer offloading manner, which may specifically refer to the above embodiments.

The protocol stack corresponding to the processing flow in this embodiment may be as shown in fig. 5. In the figure, the data transfer direction indicated by the dotted line is an optional data transfer direction, and the layer indicated by the dotted line frame may or may not be provided.

For the case of sending by means of SRB or DRB, if the small base station has an RRC layer, the macro base station may send the control parameters configured by the RRC layer (encapsulated or not encapsulated by the RRC layer) to the RRC layer of the small base station, and if the small base station does not have an RRC layer, the macro base station may send the control parameters configured by the RRC layer (encapsulated by the RRC layer) to the PDCP layer of the small base station. And the small-sized base station encapsulates the received data packet in a PDCP layer and/or an RLC layer according to an SRB or DRB mode, and finally encapsulates the data packet in a physical layer to be sent to the terminal.

For the condition of sending by a PDCP layer or RLC layer shunting mode, the control parameters configured by the RRC layer of the macro base station are sent to the RLC layer of the small base station after being packaged by the PDCP layer, or the control parameters configured by the RRC layer of the macro base station are sent to the MAC layer of the small base station after being packaged by the RLC layer, the small base station is continuously packaged to the physical layer, and the control parameters configured by the RRC layer are sent to the terminal by using a physical channel.

Optionally, at the terminal side, a peer entity is established according to PDCP, RLC, MAC entities carried by corresponding SRBs or DRBs of the macro base station and/or the small base station, so as to decode the data packet.

It should be added that the terminal may have corresponding RRC layers for multiple access nodes (or cells), and will not be described in detail here.

EXAMPLE seven

And step two, the macro base station sends the acquired control parameters configured by the RRC layer to the terminal. The transmission may be performed by means of SRB or DRB, and refer to the above embodiments specifically.

And step three, the macro base station sends the acquired control parameters configured by the RRC layer to the small base station. The small base station schedules the terminal through the control parameters configured by the RRC layer, and is not responsible for sending the control parameters configured by the RRC layer to the terminal. It should be noted that step three and step two have no necessary chronological order.

The protocol stack corresponding to the processing flow in this embodiment may be as shown in fig. 6.

The macro base station can perform RRC layer encapsulation on the control parameters configured by the RRC layer, send the control parameters to the RRC layer of the small base station, and then send the control parameters to the radio resource management module of the small base station, so that the small base station can schedule the terminal through the control parameters configured by the RRC layer. The macro base station may not encapsulate the control parameter configured in the RRC layer and directly send the control parameter to the radio resource management module of the small base station, so that the small base station may not have the RRC layer.

Example eight

step one, the small base station acquires control parameters configured by the RRC layer of the small base station.

And step two, the small base station sends the acquired control parameters configured by the RRC layer to the macro base station.

And step three, the macro base station sends the received control parameters configured by the RRC layer to the terminal.

The protocol stack corresponding to the processing flow in this embodiment may be as shown in fig. 7.

Example nine

In combination with a specific application scenario, the sending method of the control parameter provided in the embodiment of the present invention may include the following processing:

for the small base station, the small base station acquires the bottom layer control parameters configured by the RRC layer of the small base station, and then the small base station transmits the acquired bottom layer control parameters configured by the RRC layer to the terminal.

For the macro base station, the macro base station acquires the mobility management control parameters configured by the RRC layer of the macro base station, and then the macro base station sends the acquired mobility management control parameters configured by the RRC layer to the terminal.

If one of the macro base station and the small base station has poor signal quality or high load and the like, the control parameters configured by the RRC layer can be sent to the other side, and the other side sends the control parameters to the terminal.

The protocol stack corresponding to the processing flow in this embodiment may be as shown in fig. 8.

It should be added that the UE side may have corresponding RRC layers for multiple access nodes (or cells), and details thereof are not described here.

Example ten

Based on the same technical concept, an embodiment of the present invention further provides a first network node, as shown in fig. 9, where the first network node includes:

an obtaining module 910, configured to obtain a control parameter configured by a radio resource control protocol RRC layer;

a sending module 920, configured to send the acquired control parameter configured in the RRC layer to the terminal; and the base station to which the main cell of the terminal belongs is a first base station.

Preferably, the acquired control parameters are control parameters encapsulated to an RRC layer, a packet data convergence protocol PDCP layer, a radio link control RLC layer, or a medium access control MAC layer.

Preferably, the obtaining module 910 is specifically configured to:

acquiring control parameters which are sent by a first base station and configured by one or more of an RRC layer of the first base station, an RRC layer of a central control node and an RRC layer of a core network node; or,

acquiring a control parameter which is sent by the central control node and configured by an RRC layer of the central control node; or,

acquiring a control parameter which is sent by the core network node and configured by an RRC layer of the core network node; or,

control parameters configured by the own RRC layer are acquired.

Preferably, the obtaining module 910 is specifically configured to:

receiving information for configuring control parameters by an RRC layer, and determining the control parameters configured by the RRC layer according to the information for configuring the control parameters by the RRC layer.

Preferably, the sending module 920 is further configured to:

after the first network node acquires the control parameters configured by the RRC layer, notifying one or more of the first base station, the central control node and the core network node of the acquired control parameters configured by the RRC layer.

Preferably, the control parameters specifically include: bottom layer control parameters, or mobility management control parameters; the bottom layer control parameter is specifically a media access control MAC layer control parameter and/or a physical layer control parameter.

Preferably, when the control parameter is a mobility management control parameter, the sending module 920 is specifically configured to send the acquired mobility management control parameter configured in the RRC layer to the terminal through the first signaling radio bearer SRB; when the control parameter is a bottom-layer control parameter, the sending module 920 is specifically configured to: sending the acquired bottom layer control parameters configured by the RRC layer to the terminal through the second SRB;

wherein the first SRB and the second SRB are different types of SRBs.

Preferably, the sending module 920 is further configured to: before the acquired mobility management control parameters configured by the RRC layer are sent to a terminal through a first SRB, the terminal is informed to establish the first SRB; and/or the presence of a gas in the gas,

and before the acquired bottom layer control parameters configured by the RRC layer are sent to the terminal through the second SRB, the terminal is informed to establish the second SRB.

Preferably, the sending module 920 is further configured to: after the terminal is informed to establish the first SRB, the terminal is informed to modify or delete the first SRB; and/or the presence of a gas in the gas,

and after the terminal is informed to establish the second SRB, the terminal is informed to modify or delete the second SRB.

Preferably, the sending module 920 is further configured to: acquiring information of a network node which sends the message carried on the first SRB, and notifying the information of the network node to the terminal; and/or the presence of a gas in the gas,

and acquiring the information of the network node which sends the message carried on the second SRB, and informing the terminal of the information of the network node.

Preferably, the sending module 920 is specifically configured to:

directly sending the acquired control parameters configured by the RRC layer to the terminal;

and sending the acquired control parameters configured by the RRC layer to a third-party network node, and sending the control parameters to the terminal by the third-party network node.

Preferably, the sending module 920 is specifically configured to: and sending the acquired control parameters configured by the RRC layer to the terminal through the SRB or sending the acquired control parameters to the terminal through a Data Radio Bearer (DRB).

Preferably, the obtaining module 910 is further configured to: acquiring indication information, wherein the indication information is used for indicating that the sending mode of the control parameters configured by the RRC layer is SRB sending or DRB sending;

the sending module is specifically configured to: and sending the acquired control parameters configured by the RRC layer to the terminal through the SRB or sending the acquired control parameters to the terminal through the DRB according to the indication information.

Preferably, the sending module 920 is further configured to: before sending the acquired control parameters configured by the RRC layer to a terminal through an SRB, informing the terminal to establish the SRB; and/or the presence of a gas in the gas,

and before sending the acquired control parameters configured by the RRC layer to the terminal through the DRB, informing the terminal to establish the DRB.

Preferably, the sending module 920 is further configured to: after the terminal is informed to establish the SRB, the terminal is informed to modify or delete the SRB; and/or the presence of a gas in the gas,

and after the terminal is informed to establish the DRB, the terminal is informed to modify or delete the DRB.

Preferably, the sending module 920 is further configured to: acquiring information of a network node which sends a message carried on the SRB, and notifying the information of the network node to the terminal; and/or the presence of a gas in the gas,

and acquiring the information of the network node which sends the message carried on the DRB, and informing the terminal of the information of the network node.

Preferably, the control parameters comprise control parameters for signal quality measurements;

the first network node further comprises a handover module configured to: when the terminal is determined to meet the condition of performing bottom layer switching according to the information fed back by the terminal, performing bottom layer switching on the terminal; the information fed back by the terminal is information fed back to the first network node by the terminal according to the received control parameter for measuring the signal quality.

Preferably, the switching module is specifically configured to:

determining a target first network node for switching, and sending a bottom layer switching request to the target first network node;

receiving a bottom layer switching request confirmation fed back by the target first network node;

and sending a bottom layer switching command carrying the identifier of the target first network node to the terminal so that the terminal performs bottom layer switching to the target first network node.

Preferably, the switching module is specifically configured to:

receiving a bottom layer switching request confirmation fed back by the target first network node, or receiving a bottom layer switching request confirmation fed back by the target first network node through a first base station;

Preferably, the switching module is specifically configured to:

determining a target first network node for switching, and sending a bottom layer switching request to the target first network node through the first base station;

receiving a bottom layer switching request confirmation fed back by the target first network node through the first base station;

Preferably, the switching module is specifically configured to:

sending a bottom layer handover request to the first base station, so that the first base station selects a target first network node, and sending the bottom layer handover request or a bottom layer handover request reconfigured for the target first network node to the target first network node;

Based on the same technical concept, an embodiment of the present invention further provides a first base station, as shown in fig. 10, where the first base station includes:

an obtaining module 1010, configured to obtain a control parameter configured by a radio resource control protocol RRC layer;

a sending module 1020, configured to send the acquired control parameter configured in the RRC layer to the terminal.

Preferably, the obtaining module 1010 is specifically configured to:

acquiring a control parameter which is sent by the central control node and configured by an RRC layer of the central control node; or acquiring a control parameter which is sent by the core network node and configured by an RRC layer of the core network node; or acquiring control parameters configured by the RRC layer of the user equipment; or, acquiring the control parameter configured by the RRC layer sent by the first network node.

Preferably, the obtaining module 1010 is specifically configured to:

Preferably, when the control parameter is a mobility management control parameter, the sending module 1020 is specifically configured to: sending the acquired mobility management control parameters configured by the RRC layer to a terminal through a first Signaling Radio Bearer (SRB); when the control parameter is a bottom-layer control parameter, the sending module 1020 is specifically configured to: sending the acquired bottom layer control parameters configured by the RRC layer to the terminal through the second SRB;

wherein the first SRB and the second SRB are different types of SRBs.

Preferably, the sending module 1020 is further configured to: before the acquired mobility management control parameters configured by the RRC layer are sent to a terminal through a first SRB, the terminal is informed to establish the first SRB; and/or the presence of a gas in the gas,

Preferably, the sending module 1020 is further configured to: after the terminal is informed to establish the first SRB, the terminal is informed to modify or delete the first SRB; and/or the presence of a gas in the gas,

Preferably, the sending module 1020 is further configured to: acquiring information of a network node which sends the message carried on the first SRB, and notifying the information of the network node to the terminal; and/or the presence of a gas in the gas,

Preferably, the control parameter is a mobility management control parameter;

the sending module 1020 is specifically configured to: and sending the acquired mobility management control parameters configured by the RRC layer to the terminal through the first SRB.

Preferably, the sending module 1020 is further configured to: and before the acquired mobility management control parameters configured by the RRC layer are sent to the terminal through the first SRB, the terminal is informed to establish the first SRB.

Preferably, the sending module 1020 is further configured to: and after the terminal is informed to establish the first SRB, the terminal is informed to modify or delete the first SRB.

Preferably, the sending module 1020 is further configured to: and acquiring the information of the network node which sends the message carried on the first SRB, and informing the terminal of the information of the network node.

Preferably, the sending module 1020 is specifically configured to:

sending the acquired control parameters configured by the RRC layer to a first network node, so that the first network node sends the received control parameters to the terminal; or,

and directly sending the acquired control parameters configured by the RRC layer to the terminal.

Preferably, the sending module 1020 is specifically configured to:

and sending the acquired bottom layer control parameters configured by the RRC layer to the first network node.

Preferably, the first network node sends the received control parameter to the terminal, specifically: and the first network node sends the received control parameters to the terminal through SRB or sends the control parameters to the terminal through Data Radio Bearer (DRB).

Preferably, the sending module 1020 is further configured to: sending indication information to the first network node, where the indication information is used to indicate that a sending mode of the control parameter configured in the RRC layer is sending through an SRB or sending through a DRB;

the first network node sends the received control parameter to the terminal through the SRB or sends the control parameter to the terminal through the DRB, specifically: and the first network node sends the received control parameters to the terminal through the SRB or sends the control parameters to the terminal through the DRB according to the indication information.

Preferably, before the first network node sends the received control parameter configured by the RRC layer to the terminal through the SRB, the method further includes: the first base station or the first network node informs the terminal to establish the SRB; and/or the presence of a gas in the gas,

before the first network node sends the received control parameters configured by the RRC layer to the terminal through the DRB, the method further includes: the first base station or the first network node notifies the terminal to establish the DRB.

Preferably, the sending module 1020 is specifically configured to: and sending the acquired control parameters configured by the RRC layer to the terminal through the SRB or sending the acquired control parameters to the terminal through the DRB.

Preferably, the sending module 1020 is further configured to: before the acquired control parameters configured by the RRC layer are sent to the terminal through the SRB, the terminal is informed to establish the SRB; and/or the presence of a gas in the gas,

and before the acquired control parameters configured by the RRC layer are sent to the terminal through the DRB, the terminal is informed to establish the DRB.

Preferably, the sending module 1020 is further configured to: after the terminal is informed to establish the SRB, the terminal is informed to modify or delete the SRB; and/or the presence of a gas in the gas,

Preferably, the sending module 1020 is further configured to: acquiring information of a network node which sends a message carried on the SRB, and notifying the information of the network node to the terminal; and/or the presence of a gas in the gas,

Preferably, the first base station further includes a handover module, configured to:

when receiving a bottom layer switching request which is sent by a first network node and carries an identifier of a target first network node, forwarding the bottom layer switching request to the target first network node.

when receiving a bottom layer switching request sent by a first network node, selecting a target first network node, and sending the bottom layer switching request or a bottom layer switching request reconfigured for the target first network node to the target first network node.

Preferably, the switching module is further configured to:

receiving a bottom layer switching request confirmation fed back by the target first network node, and forwarding the bottom layer switching request confirmation to the first network node.

Preferably, the switching module is further configured to:

Based on the same technical concept, an embodiment of the present invention further provides a terminal, as shown in fig. 11, where the terminal includes:

a receiving module 1110, configured to receive a control parameter configured by a radio resource control protocol RRC layer and sent by a first network node or a first base station.

Preferably, the receiving module 1110 is specifically configured to:

and receiving the control parameters of the RRC layer configuration sent by the first network node or the first base station through the SRB or the DRB.

Preferably, the receiving module 1110 is further configured to:

before the receiving of the control parameter configured in the RRC layer sent by the first network node or the first base station through the SRB or the DRB, receiving a notification sent by the first base station or the first network node, where the notification carries information of a network node that sends a message carried on the SRB or the DRB;

and establishing a PDCP entity, an RLC entity and an MAC entity corresponding to the network node according to the shunting information in the information of the network node, or establishing the RLC entity and the MAC entity corresponding to the network node, or establishing the MAC entity corresponding to the network node.

Preferably, the receiving module 1110 is further configured to:

before the receiving of the control parameter of the RRC layer configuration sent by the first network node or the first base station through the SRB or the DRB, receiving configuration information sent by the first base station or the first network node;

and according to the indication of the configuration information, establishing a PDCP entity, an RLC entity and an MAC entity corresponding to a network node which sends the message carried on the SRB or the DRB, or establishing the RLC entity and the MAC entity corresponding to the network node, or establishing the MAC entity corresponding to the network node.

It should be noted that: in the method for sending control parameters provided in the foregoing embodiment, when sending control parameters, only the division of each functional module is described as an example, and in practical applications, the function allocation may be completed by different functional modules as needed, that is, the internal structure of the apparatus may be divided into different functional modules to complete all or part of the functions described above. In addition, the sending apparatus of the control parameter and the sending method of the control parameter provided in the above embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiments and are not described herein again.

The decapsulation concept proposed in all embodiments of the present invention may be decapsulation and/or encapsulation.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A method for sending control parameters, the method comprising:

the first network node sends the acquired control parameters configured by the RRC layer to a terminal; the base station to which the main cell of the terminal belongs is a first base station;

the control parameters specifically include: bottom layer control parameters, or mobility management control parameters; the bottom layer control parameters are media intervention control MAC layer control parameters and/or physical layer control parameters;

when the control parameter is a mobility management control parameter, the first network node sends the acquired control parameter configured in the RRC layer to the terminal, specifically: the first network node sends the acquired mobility management control parameters configured by the RRC layer to a terminal through a first Signaling Radio Bearer (SRB); when the control parameter is a bottom layer control parameter, the first network node sends the acquired control parameter configured by the RRC layer to the terminal, specifically: the first network node sends the acquired bottom control parameters configured by the RRC layer to the terminal through a second SRB; wherein the first SRB and the second SRB are different types of SRBs.

2. The method of claim 1, wherein the obtained control parameters are control parameters encapsulated to an RRC layer, a packet data convergence protocol PDCP layer, a radio link control RLC layer, or a medium access control MAC layer.

3. The method according to claim 1, wherein the first network node obtains the control parameters configured in the RRC layer, specifically:

the first network node acquires control parameters which are sent by a first base station and configured by one or more of an RRC layer of the first base station, an RRC layer of a central control node and an RRC layer of a core network node; or,

the first network node acquires a control parameter which is sent by the central control node and configured by an RRC layer of the central control node; or,

the first network node acquires a control parameter which is sent by the core network node and configured by an RRC layer of the core network node; or,

the first network node obtains control parameters configured by its own RRC layer.

4. The method according to claim 1, wherein the first network node obtains the control parameters configured in the RRC layer, specifically:

the first network node receives information for configuring control parameters in an RRC layer, and determines the control parameters configured in the RRC layer according to the information for configuring the control parameters in the RRC layer.

5. The method of claim 1, wherein after the first network node obtains the RRC layer configured control parameters, the method further comprises:

and the first network node informs one or more of the first base station, the central control node and the core network node of the acquired control parameters configured by the RRC layer.

6. The method of claim 1, wherein before the first network node sends the acquired mobility management control parameters configured in the RRC layer to the terminal through the first SRB, the method further comprises: the first base station or the first network node informs the terminal to establish the first SRB; and/or the presence of a gas in the gas,

before the first network node sends the acquired bottom layer control parameter configured in the RRC layer to the terminal through the second SRB, the method further includes: and the first base station or the first network node informs the terminal to establish the second SRB.

7. The method of claim 6, wherein after the first base station or the first network node notifies the terminal to establish the first SRB, the method further comprises: the first base station or the first network node notifies the terminal to modify or delete the first SRB; and/or the presence of a gas in the gas,

after the first base station or the first network node notifies the terminal to establish the second SRB, the method further includes: and the first base station or the first network node informs the terminal to modify or delete the second SRB.

8. The method of claim 1, further comprising: the first base station or the first network node acquires information of a network node which sends a message carried on the first SRB, and notifies the information of the network node to the terminal; and/or the presence of a gas in the gas,

and the first base station or the first network node acquires the information of the network node which sends the message carried on the second SRB, and notifies the information of the network node to the terminal.

9. The method according to claim 1, wherein the first network node sends the acquired control parameter configured in the RRC layer to the terminal, specifically:

the first network node directly sends the acquired control parameters configured by the RRC layer to the terminal;

and the first network node sends the acquired control parameters configured by the RRC layer to a third-party network node, and the third-party network node sends the control parameters to the terminal.

10. The method according to claim 1, wherein the first network node sends the acquired control parameter configured in the RRC layer to the terminal, specifically: and the first network node sends the acquired control parameters configured by the RRC layer to the terminal through the SRB or sends the acquired control parameters to the terminal through the Data Radio Bearer (DRB).

11. The method of claim 10, further comprising: the first network node acquires indication information, wherein the indication information is used for indicating that the sending mode of the control parameters configured by the RRC layer is SRB sending or DRB sending;

the first network node sends the acquired control parameter configured by the RRC layer to the terminal through the SRB or sends the acquired control parameter to the terminal through the DRB, which specifically includes: and the first network node sends the acquired control parameters configured by the RRC layer to the terminal through the SRB or sends the acquired control parameters to the terminal through the DRB according to the indication information.

12. The method according to claim 10, wherein before the first network node sends the acquired RRC layer configured control parameters to the terminal through the SRB, the method further comprises: the first base station or the first network node informs the terminal to establish the SRB; and/or the presence of a gas in the gas,

before the first network node sends the acquired control parameter configured by the RRC layer to the terminal through the DRB, the method further includes: the first base station or the first network node notifies the terminal to establish the DRB.

13. The method of claim 12, wherein after the first base station or the first network node notifies the terminal to establish the SRB, the method further comprises: the first base station or the first network node notifies the terminal to modify or delete the SRB; and/or the presence of a gas in the gas,

after the first base station or the first network node notifies the terminal to establish the DRB, the method further includes: the first base station or the first network node notifies the terminal to modify or delete the DRB.

14. The method of claim 10, further comprising: the first base station or the first network node acquires information of a network node which sends a message carried on the SRB, and notifies the information of the network node to the terminal; and/or the presence of a gas in the gas,

and the first base station or the first network node acquires the information of the network node which sends the message carried on the DRB, and notifies the information of the network node to the terminal.

15. The method of claim 1, wherein the control parameters comprise control parameters for signal quality measurements;

the method further comprises the following steps: when the first network node determines that the terminal meets the condition of performing bottom layer switching according to the information fed back by the terminal, the first network node performs bottom layer switching on the terminal; the information fed back by the terminal is information fed back to the first network node by the terminal according to the received control parameter for measuring the signal quality.

16. The method according to claim 15, wherein the first network node performs a bottom layer handover for the terminal, specifically:

the first network node determines a target first network node for switching and sends a bottom layer switching request to the target first network node;

the first network node receives a bottom layer switching request confirmation fed back by the target first network node;

and the first network node sends a bottom layer switching command carrying the identification of the target first network node to the terminal so that the terminal performs bottom layer switching to the target first network node.

17. The method according to claim 15, wherein the first network node performs a bottom layer handover for the terminal, specifically:

the first network node receives a bottom layer switching request confirmation fed back by the target first network node, or the target first network node receives a bottom layer switching request confirmation fed back by a first base station;

and the first network node or the first base station sends a bottom layer switching command carrying the identifier of the target first network node to the terminal so that the terminal performs bottom layer switching to the target first network node.

18. The method according to claim 15, wherein the first network node performs a bottom layer handover for the terminal, specifically:

the first network node determines a target first network node for switching, and sends a bottom layer switching request to the target first network node through the first base station;

the first network node receives a bottom layer switching request confirmation fed back by the target first network node through the first base station;

19. The method according to claim 15, wherein the first network node performs a bottom layer handover for the terminal, specifically:

the first network node sends a bottom layer switching request to the first base station so that the first base station selects a target first network node and sends the bottom layer switching request or a bottom layer switching request reconfigured for the target first network node to the target first network node;

20. A method for sending control parameters, the method comprising:

the first base station sends the acquired control parameters configured by the RRC layer to a terminal;

when the control parameter is a mobility management control parameter, the first base station sends the acquired control parameter configured by the RRC layer to the terminal, specifically: the first base station sends the acquired mobility management control parameters configured by the RRC layer to a terminal through a first Signaling Radio Bearer (SRB); when the control parameter is a bottom layer control parameter, the first base station sends the acquired control parameter configured by the RRC layer to the terminal, specifically: the first base station sends the acquired bottom layer control parameters configured by the RRC layer to the terminal through a second SRB; wherein the first SRB and the second SRB are different types of SRBs.

21. The method of claim 20, wherein the obtained control parameters are control parameters encapsulated to an RRC layer, a packet data convergence protocol PDCP layer, a radio link control RLC layer, or a medium access control MAC layer.

22. The method according to claim 20, wherein the first base station obtains the control parameters configured in the RRC layer, specifically:

the first base station acquires a control parameter which is sent by a central control node and configured by an RRC layer of the central control node; or, the first base station acquires a control parameter configured by an RRC layer of a core network node, which is sent by the core network node; or, the first base station acquires a control parameter configured by the RRC layer of the first base station; or, the first base station acquires the control parameter configured by the RRC layer sent by the first network node.

23. The method according to claim 20, wherein the first base station obtains the control parameters configured in the RRC layer, specifically:

the first base station receives information for configuring control parameters by an RRC layer, and determines the control parameters configured by the RRC layer according to the information for configuring the control parameters by the RRC layer.

24. The method of claim 20, wherein before the first base station sends the acquired mobility management control parameters configured in the RRC layer to the terminal through the first SRB, the method further comprises: the first base station or a first network node informs the terminal to establish the first SRB; and/or the presence of a gas in the gas,

before the first base station sends the acquired bottom layer control parameters configured by the RRC layer to the terminal through the second SRB, the method further includes: and the first base station or the first network node informs the terminal to establish the second SRB.

25. The method of claim 24, wherein after the first base station or the first network node notifies the terminal to establish the first SRB, the method further comprises: the first base station or the first network node notifies the terminal to modify or delete the first SRB; and/or the presence of a gas in the gas,

26. The method of claim 20, further comprising: the first base station or the first network node acquires information of a network node which sends the message carried on the first SRB, and notifies the information of the network node to the terminal; and/or the presence of a gas in the gas,

27. The method of claim 20, wherein the control parameter is a mobility management control parameter;

the first base station sends the acquired control parameters configured by the RRC layer to the terminal, specifically: and the first base station sends the acquired mobility management control parameters configured by the RRC layer to the terminal through the first SRB.

28. The method of claim 27, wherein before the first base station sends the acquired mobility management control parameters configured in the RRC layer to the terminal through the first SRB, the method further comprises: and the first base station or the first network node informs the terminal to establish the first SRB.

29. The method of claim 28, wherein after the first base station or the first network node notifies the terminal to establish the first SRB, further comprising: and the first base station or the first network node informs the terminal to modify or delete the first SRB.

30. The method of claim 27, further comprising: and the first base station or the first network node acquires the information of the network node which sends the message carried on the first SRB, and notifies the information of the network node to the terminal.

31. The method according to claim 20, wherein the first base station sends the acquired control parameter configured in the RRC layer to the terminal, specifically:

the first base station sends the acquired control parameters configured by the RRC layer to a first network node, so that the first network node sends the received control parameters to the terminal; or,

and the first base station directly sends the acquired control parameters configured by the RRC layer to the terminal.

32. The method according to claim 31, wherein the first base station sends the acquired control parameter configured in the RRC layer to the first network node, specifically:

and the first base station sends the acquired bottom layer control parameters configured by the RRC layer to the first network node.

33. The method according to claim 31, wherein the first network node sends the received control parameters to the terminal, specifically: and the first network node sends the received control parameters to the terminal through SRB or sends the control parameters to the terminal through Data Radio Bearer (DRB).

34. The method of claim 33, further comprising: the first base station sends indication information to the first network node, wherein the indication information is used for indicating that the sending mode of the control parameters configured by the RRC layer is SRB sending or DRB sending;

35. The method of claim 34, wherein before the first network node sends the received RRC layer configured control parameters to the terminal via the SRB, the method further comprises: the first base station or the first network node informs the terminal to establish the SRB; and/or the presence of a gas in the gas,

36. The method according to claim 31, wherein the first base station directly sends the acquired control parameter configured in the RRC layer to the terminal, specifically: and the first base station sends the acquired control parameters configured by the RRC layer to the terminal through the SRB or sends the acquired control parameters to the terminal through the DRB.

37. The method of claim 36, wherein before the first base station sends the acquired RRC layer configured control parameters to the terminal through SRB, the method further comprises: the first base station or the first network node informs the terminal to establish the SRB; and/or the presence of a gas in the gas,

before the first base station sends the acquired control parameter configured in the RRC layer to the terminal through the DRB, the method further includes: the first base station or the first network node notifies the terminal to establish the DRB.

38. The method according to claim 35 or 37, wherein after the first base station or the first network node notifies the terminal to establish the SRB, the method further comprises: the first base station or the first network node notifies the terminal to modify or delete the SRB; and/or the presence of a gas in the gas,

39. The method of claim 34 or 36, further comprising: the first base station or the first network node acquires information of a network node which sends a message carried on the SRB, and notifies the information of the network node to the terminal; and/or the presence of a gas in the gas,

40. The method of claim 20, further comprising:

and when the first base station receives a bottom layer switching request which is sent by a first network node and carries the identifier of a target first network node, forwarding the bottom layer switching request to the target first network node.

41. The method of claim 20, further comprising:

when the first base station receives a bottom layer switching request sent by a first network node, a target first network node is selected, and the bottom layer switching request or the bottom layer switching request reconfigured for the target first network node is sent to the target first network node.

42. The method of claim 40 or 41, further comprising:

and the first base station receives the bottom layer switching request confirmation fed back by the target first network node and forwards the bottom layer switching request confirmation to the first network node.

43. The method of claim 42, further comprising:

and the first base station sends a bottom layer switching command carrying the identification of the target first network node to the terminal so that the terminal performs bottom layer switching to the target first network node.

44. A method for sending control parameters, the method comprising:

a terminal receives a control parameter configured by a radio resource control protocol (RRC) layer sent by a first network node or a first base station;

when the control parameter is a mobility management control parameter, the terminal receives a control parameter configured by a radio resource control protocol RRC layer and sent by a first network node or a first base station, specifically: a terminal receives a mobility management control parameter configured by a radio resource control protocol RRC layer and sent by a first network node or a first base station through a first Signaling Radio Bearer (SRB); when the control parameter is a bottom layer control parameter, the terminal receives a control parameter configured by a radio resource control protocol RRC layer and sent by a first network node or a first base station, specifically: the terminal receives a first network node or a first base station through a second SRB, and a bottom layer control parameter of RRC layer configuration is sent by the first network node or the first base station; wherein the first SRB and the second SRB are different types of SRBs.

45. The method according to claim 44, wherein the terminal receives the control parameter configured in the RRC layer and sent by the first network node or the first base station, and specifically comprises:

and the terminal receives the control parameters of the RRC layer configuration sent by the first network node or the first base station through the SRB or the DRB.

46. The method of claim 45, wherein before the terminal receives the RRC layer configured control parameters sent by the first network node or the first base station via the SRB or the DRB, the method further comprises:

the terminal receives a notification sent by the first base station or the first network node, wherein the notification carries information of the network node which sends the message carried on the SRB or the DRB;

and the terminal establishes a PDCP entity, an RLC entity and an MAC entity corresponding to the network node according to the shunting information in the information of the network node, or establishes an RLC entity and an MAC entity corresponding to the network node, or establishes an MAC entity corresponding to the network node.

47. The method of claim 45, wherein before the terminal receives the RRC layer configured control parameters sent by the first network node or the first base station via the SRB or the DRB, the method further comprises:

the terminal receives configuration information sent by the first base station or the first network node;

and the terminal establishes a PDCP entity, an RLC entity and an MAC entity corresponding to a network node which sends the information loaded on the SRB or the DRB according to the indication of the configuration information, or establishes the RLC entity and the MAC entity corresponding to the network node, or establishes the MAC entity corresponding to the network node.

48. A first network node, characterized in that the first network node comprises:

a sending module, configured to send the acquired control parameter configured by the RRC layer to the terminal; the base station to which the main cell of the terminal belongs is a first base station;

when the control parameter is a mobility management control parameter, the sending module is specifically configured to send the acquired mobility management control parameter configured in the RRC layer to the terminal through the first signaling radio bearer SRB; when the control parameter is a bottom-layer control parameter, the sending module is specifically configured to: sending the acquired bottom layer control parameters configured by the RRC layer to the terminal through the second SRB; wherein the first SRB and the second SRB are different types of SRBs.

49. The first network node according to claim 48, wherein the obtained control parameters are control parameters encapsulated to a RRC layer, a packet data Convergence protocol, PDCP, a radio Link control, RLC, layer or a Medium Access control, MAC, layer.

50. The first network node of claim 48, wherein the obtaining module is specifically configured to:

control parameters configured by the own RRC layer are acquired.

51. The first network node of claim 48, wherein the obtaining module is specifically configured to:

52. The first network node of claim 48, wherein the sending module is further configured to:

53. The first network node of claim 48, wherein the sending module is further configured to: before the acquired mobility management control parameters configured by the RRC layer are sent to a terminal through a first SRB, the terminal is informed to establish the first SRB; and/or the presence of a gas in the gas,

54. The first network node of claim 53, wherein the sending module is further configured to: after the terminal is informed to establish the first SRB, the terminal is informed to modify or delete the first SRB; and/or the presence of a gas in the gas,

55. The first network node of claim 48, wherein the sending module is further configured to: acquiring information of a network node which sends the message carried on the first SRB, and notifying the information of the network node to the terminal; and/or the presence of a gas in the gas,

56. The first network node according to claim 48, wherein the sending module is specifically configured to:

57. The first network node according to claim 48, wherein the sending module is specifically configured to: and sending the acquired control parameters configured by the RRC layer to the terminal through the SRB or sending the acquired control parameters to the terminal through a Data Radio Bearer (DRB).

58. The first network node of claim 57, wherein the obtaining module is further configured to: acquiring indication information, wherein the indication information is used for indicating that the sending mode of the control parameters configured by the RRC layer is SRB sending or DRB sending;

59. The first network node of claim 57, wherein the sending module is further configured to: before sending the acquired control parameters configured by the RRC layer to a terminal through an SRB, informing the terminal to establish the SRB; and/or the presence of a gas in the gas,

60. The first network node of claim 59, wherein the sending module is further configured to: after the terminal is informed to establish the SRB, the terminal is informed to modify or delete the SRB; and/or the presence of a gas in the gas,

61. The first network node of claim 57, wherein the sending module is further configured to: acquiring information of a network node which sends a message carried on the SRB, and notifying the information of the network node to the terminal; and/or the presence of a gas in the gas,

62. The first network node according to claim 48, wherein the control parameters comprise control parameters for signal quality measurements;

63. The first network node according to claim 62, wherein the handover module is specifically configured to:

64. The first network node according to claim 62, wherein the handover module is specifically configured to:

65. The first network node according to claim 62, wherein the handover module is specifically configured to:

66. The first network node according to claim 62, wherein the handover module is specifically configured to:

67. A first base station, the first base station comprising:

a sending module, configured to send the acquired control parameter configured by the RRC layer to the terminal;

when the control parameter is a mobility management control parameter, the sending module is specifically configured to: sending the acquired mobility management control parameters configured by the RRC layer to a terminal through a first Signaling Radio Bearer (SRB); when the control parameter is a bottom-layer control parameter, the sending module is specifically configured to: sending the acquired bottom layer control parameters configured by the RRC layer to the terminal through the second SRB; wherein the first SRB and the second SRB are different types of SRBs.

68. The first base station as claimed in claim 67, wherein the obtained control parameters are control parameters encapsulated to RRC layer, PDCP layer, RLC layer or MAC layer.

69. The first base station of claim 67, wherein the obtaining module is specifically configured to:

acquiring a control parameter which is sent by a central control node and configured by an RRC layer of the central control node; or acquiring a control parameter which is sent by a core network node and configured by an RRC layer of the core network node; or acquiring control parameters configured by the RRC layer of the user equipment; or, acquiring the control parameter configured by the RRC layer sent by the first network node.

70. The first base station of claim 67, wherein the obtaining module is specifically configured to:

71. The first base station of claim 67, wherein the sending module is further configured to: before the acquired mobility management control parameters configured by the RRC layer are sent to a terminal through a first SRB, the terminal is informed to establish the first SRB; and/or the presence of a gas in the gas,

72. The first base station of claim 71, wherein the sending module is further configured to: after the terminal is informed to establish the first SRB, the terminal is informed to modify or delete the first SRB; and/or the presence of a gas in the gas,

73. The first base station of claim 67, wherein the sending module is further configured to: acquiring information of a network node which sends the message carried on the first SRB, and notifying the information of the network node to the terminal; and/or the presence of a gas in the gas,

74. The first base station of claim 67, wherein the control parameter is a mobility management control parameter;

the sending module is specifically configured to: and sending the acquired mobility management control parameters configured by the RRC layer to the terminal through the first SRB.

75. The first base station of claim 74, wherein the sending module is further configured to: and before the acquired mobility management control parameters configured by the RRC layer are sent to the terminal through the first SRB, the terminal is informed to establish the first SRB.

76. The first base station of claim 75, wherein the sending module is further configured to: and after the terminal is informed to establish the first SRB, the terminal is informed to modify or delete the first SRB.

77. The first base station of claim 74, wherein the sending module is further configured to: and acquiring the information of the network node which sends the message carried on the first SRB, and informing the terminal of the information of the network node.

78. The first base station of claim 67, wherein the sending module is specifically configured to:

79. The first base station of claim 78, wherein the sending module is specifically configured to:

80. The first base station of claim 78, wherein the first network node sends the received control parameter to the terminal, specifically: and the first network node sends the received control parameters to the terminal through SRB or sends the control parameters to the terminal through Data Radio Bearer (DRB).

81. The first base station of claim 80, wherein the sending module is further configured to: sending indication information to the first network node, where the indication information is used to indicate that a sending mode of the control parameter configured in the RRC layer is sending through an SRB or sending through a DRB;

82. The first base station of claim 81, wherein before the first network node sends the received RRC layer configured control parameters to the terminal via the SRB, the method further comprises: the first base station or the first network node informs the terminal to establish the SRB; and/or the presence of a gas in the gas,

83. The first base station of claim 78, wherein the sending module is specifically configured to: and sending the acquired control parameters configured by the RRC layer to the terminal through the SRB or sending the acquired control parameters to the terminal through the DRB.

84. The first base station of claim 83, wherein the sending module is further configured to: before the acquired control parameters configured by the RRC layer are sent to the terminal through the SRB, the terminal is informed to establish the SRB; and/or the presence of a gas in the gas,

85. The first base station of claim 82 or 84, wherein the sending module is further configured to: after the terminal is informed to establish the SRB, the terminal is informed to modify or delete the SRB; and/or the presence of a gas in the gas,

86. The first base station of claim 80 or 83, wherein the sending module is further configured to: acquiring information of a network node which sends a message carried on the SRB, and notifying the information of the network node to the terminal; and/or the presence of a gas in the gas,

87. The first base station of claim 67, wherein the first base station further comprises a handover module configured to:

88. The first base station of claim 67, wherein the first base station further comprises a handover module configured to:

89. The first base station of claim 87 or 88, wherein the handover module is further configured to:

90. The first base station of claim 89, wherein the handover module is further configured to:

91. A terminal, characterized in that the terminal comprises:

a receiving module, configured to receive a control parameter configured by a radio resource control protocol RRC layer and sent by a first network node or a first base station;

when the control parameter is a mobility management control parameter, the receiving module is further configured to: a terminal receives a mobility management control parameter configured by a radio resource control protocol RRC layer and sent by a first network node or a first base station through a first Signaling Radio Bearer (SRB); when the control parameter is a bottom layer control parameter, the receiving module is further configured to: the terminal receives a first network node or a first base station through a second SRB, and a bottom layer control parameter of RRC layer configuration is sent by the first network node or the first base station; wherein the first SRB and the second SRB are different types of SRBs.

92. The terminal according to claim 91, wherein the receiving module is specifically configured to:

93. The terminal of claim 92, wherein the receiving module is further configured to:

94. The terminal of claim 92, wherein the receiving module is further configured to:

95. A computer readable storage medium storing computer instructions for performing the method of any one of claims 1 to 47.