WO2014071882A1

WO2014071882A1 - Cell communication method, apparatus and system

Info

Publication number: WO2014071882A1
Application number: PCT/CN2013/086857
Authority: WO
Inventors: 李亚娟
Original assignee: 华为技术有限公司
Priority date: 2012-11-09
Filing date: 2013-11-11
Publication date: 2014-05-15
Also published as: CN107645765B; CN107645765A; CN103813423A; CN103813423B

Abstract

Disclosed are a cell communication method, apparatus and system. The present invention relates to the field of communication, and is used to solve the technical problem of the low availability for air interface resource used by a macro base station. The method provided by the present invention comprises: establishing a Radio Resource Control (RRC) connection with a User Equipment (UE), and transferring a RRC signaling to said UE through said RRC connection; respectively, sending an indication signaling for establishing a secondary Signaling Radio Bearer (SRB) to said UE and said small cell base station, to indicate that said UE and said small cell base station establish said secondary SRB which is used for transferring the RRC signaling between said UE and small cell base station. The invention is used for performing the cell communication in the field of communication.

Description

Cell communication method, device and system

This application claims priority to Chinese Patent Application No. 201210447240.7, entitled "Cell Communication Method, Apparatus and System", filed on November 9, 2012, the entire contents of which is incorporated herein by reference. In the application.

Technical field

The present invention relates to the field of communications, and in particular, to a cell communication method, apparatus, and system.

Background technique

With the development of mobile communication technologies and the increase in the number of people using mobile data services, the load of existing macro cells is getting heavier and heavier. Because the bearer capability of the macro cell is limited, if the UE (User Equipment) in a cell is dense, the individual UE may not be able to communicate normally or the data transmission speed of the UE is slow. In order to provide better services, 3GPP (The 3rd Generation Partnership Project) introduces CA (Carrier Aggregation) technology, and UEs can simultaneously use multiple component carriers (CC) through carrier aggregation technology. Perform uplink and downlink communication to support high-speed data transmission. In order to reduce the load of the macro cell, the small cell base station (small cell base station) and the macro base station (macro base station) may cooperate to provide services for the UE, wherein the small cell base station provides user data enhancement for carrying in transmission of user service data; The station is used to undertake transmission of control signaling to control user data transmission between the UE and the small cell base station. The power consumption and coverage of the small cell base station is usually lower than that of the macro base station, and the two can jointly serve the UE. In order to enable the macro base station to implement control of the small cell base station and the UE, an RRC (Radio Resource Control) connection needs to be established between the macro base station and the UE.

In order to maintain the uplink synchronization of the UE during the communication process, the macro base station needs to transmit to the UE through the air interface resource. Traditional transport RRC signaling, which will consume more air interface resources, so that the macro base station air interface resource utilization "low; the same time, the UE needs while maintaining macro base stations, small-cell base station communication, large power consumption _ε SUMMARY OF THE INVENTION

The embodiments of the present invention provide a cell communication method, device, and system, which can solve the problem that the utilization rate of the macro base station resources of the macro base station is low and the power consumption of the communication device is large.

In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:

In a first aspect, an embodiment of the present invention provides a cell communication method, including:

Establishing a radio resource control RRC connection with the user equipment UE, and transmitting RRC signaling with the UE by using the RRC connection;

And transmitting, by the UE and the small cell base station, instruction signaling for establishing an auxiliary signaling radio bearer SRB, respectively, to indicate that the UE and the small cell base station establish the auxiliary SRB, where the auxiliary SRB is used for The UE transmits RRC signaling with the small cell base station.

In a first possible implementation, after the indication signaling for establishing the auxiliary SRB is separately sent to the UE and the small cell base station, the method further includes:

Actively suspending the RRC connection;

Sending, to the UE, indication signaling to suspend the RRC connection, instructing the UE to suspend the RRC connection; and

And transmitting, to the small cell base station, indication signaling for activating the auxiliary SRB, so that the small cell base station uses the auxiliary SRB to transmit RRC signaling with the UE.

In a second possible implementation, after the indication signaling for establishing the auxiliary SRB is separately sent to the UE and the small cell base station, the method further includes: Receiving indication signaling for suspending the RRC connection sent by the UE, and suspending the RRC connection according to the indication signaling;

And transmitting, by the small cell base station, indication signaling for activating the auxiliary SRB, to instruct the small cell base station to activate the auxiliary SRB, so that the small cell base station uses the auxiliary SRB to transmit RRC signaling with the UE.

With reference to the first possible implementation manner or the second possible implementation manner of the first aspect, in a third possible implementation manner, the method further includes:

Re-activating the RRC connection, transmitting RRC signaling with the UE using the RRC connection. In a fourth possible implementation, before the sending the indication signaling for establishing the auxiliary signaling radio bearer SRB to the UE and the small cell base station, the method further includes:

Interacting with the small cell base station, determining the auxiliary SRB parameter, and sending the auxiliary SRB parameter to the UE, so that the UE and the small cell base station establish the auxiliary SRB according to the auxiliary SRB parameter;

Or

The UE and the small cell base station are instructed to establish the auxiliary SRB by using default parameters of the SRB or the auxiliary SRB.

In a second aspect, an embodiment of the present invention provides a cell communication method, including:

Receiving indication signaling for establishing a secondary signaling radio bearer SRB sent by the macro base station, and establishing an auxiliary SRB with the user equipment UE;

The auxiliary SRB is activated, and the RRC signaling is transmitted to the UE by using the auxiliary SRB.

In a first possible implementation manner, the activating the auxiliary SRB includes:

Receiving indication signaling for activating the auxiliary SRB sent by the macro base station, according to the indication letter Let the auxiliary SRB be activated.

Or

Receiving indication signaling for activating the auxiliary SRB sent by the UE, and activating the auxiliary SRB according to the indication signaling.

With reference to the second aspect, or the first possible implementation manner of the second aspect, in a second possible implementation manner, after using the auxiliary SRB to transmit the RRC signaling to the UE, the method further includes:

Suspending the auxiliary SRB, so that the UE transmits RRC signaling to the macro base station by using a radio resource control RRC connection, and the RRC connection is established between the UE and the macro base station.

In a third possible implementation manner, before receiving the indication signaling for establishing the secondary signaling radio bearer (SRB) sent by the macro base station, and establishing the auxiliary SRB with the user equipment UE, the method further includes: performing, with the macro base station Interacting, determining a secondary SRB parameter for establishing the secondary SRB; or

The default parameters of the SRB or the auxiliary SRB are used as auxiliary SRB parameters for establishing the auxiliary SRB.

In a third aspect, the embodiment provides a cell communication method, including:

Establishing a radio resource control RRC connection with the macro base station, and transmitting RRC signaling with the macro base station by using the RRC connection;

Receiving indication signaling for establishing the auxiliary SRB sent by the macro base station, and establishing an auxiliary SRB with the small cell base station;

Suspending the RRC connection, activating the auxiliary SRB, and transmitting RRC signaling to the small cell base station by using the auxiliary SRB.

In a first possible implementation manner, the suspending the RRC connection is: Receiving indication signaling for suspending the RRC connection sent by the macro base station, and suspending the RRC connection according to the indication signaling.

In a second possible implementation manner, the suspending the RRC connection is:

Measuring signal quality between the user equipment UE and the small cell base station;

When the signal quality between the UE and the small cell base station is higher than or equal to the first preset threshold, suspending the RRC connection, and sending an indication signaling suspending the RRC connection to the macro base station .

With reference to the third aspect, or the first possible implementation manner of the third aspect, or the second possible implementation manner of the third aspect, in a third possible implementation manner, the method further includes:

Suspending the auxiliary SRB, activating the RRC connection, and transmitting RRC signaling with the macro base station using the RRC connection.

In a fourth possible implementation manner, before receiving the indication signaling for establishing the auxiliary SRB sent by the macro base station, and before establishing the auxiliary SRB with the small cell base station, the method further includes:

A secondary SRB parameter is determined, the secondary SRB parameter being used to establish the secondary SRB.

In a fourth aspect, an embodiment of the present invention provides a macro base station, including:

a processor, configured to establish a radio resource control RRC connection with the user equipment UE, and transmit RRC signaling to the UE by using the RRC connection;

a transmitter, configured to send, to the UE and the small cell base station, indication signaling for establishing a secondary signaling radio bearer SRB, to indicate that the UE and the small cell base station establish the auxiliary SRB, the auxiliary SRB And configured to transmit RRC signaling to the UE and the small cell base station.

In the first possible implementation,

The processor is further configured to actively suspend the RRC connection;

The transmitter is further configured to send, to the UE, indication signaling that suspends the RRC connection, indicating The UE suspends the RRC connection;

In a second possible implementation manner, the method further includes:

And a receiver, configured to receive the indication signaling that is sent by the UE and suspend the RRC connection; the processor is further configured to suspend the RRC connection according to the indication signaling received by the receiver;

The apparatus is further configured to send, to the small cell base station, indication signaling that activates the auxiliary SRB, to instruct the small cell base station to activate the auxiliary SRB, so that the small cell base station uses the auxiliary SRB and the The UE transmits RRC signaling.

With the first possible implementation of the second aspect or the second possible implementation, in a third possible implementation, the processor is further configured to activate the RRC connection, so that the macro base station uses The RRC connection and the UE transmit RRC signaling.

In a fourth possible implementation, before the sending the indication signaling for establishing the auxiliary signaling radio bearer SRB to the UE and the small cell base station, the method further includes:

The processor is further configured to interact with the small cell base station, determine a secondary SRB parameter, and instruct the transmitter to send the secondary SRB parameter to the UE, so that the UE and the small cell base station are configured according to the The auxiliary SRB parameter establishes the auxiliary SRB;

Or

The processor is further configured to instruct the UE and the small cell base station to establish the auxiliary SRB by using default parameters of the SRB or the auxiliary SRB.

In a fifth aspect, an embodiment of the present invention provides a small cell base station, including: a receiver, configured to receive indication signaling for establishing a secondary signaling radio bearer SRB sent by the macro base station, and a processor, configured to establish, according to the indication signaling received by the receiver, an auxiliary SRB with the user equipment UE; as well as

The auxiliary SRB is activated, so that the small cell base station transmits RRC signaling to the UE by using the auxiliary SRB.

In a first possible implementation manner, the receiver is configured to receive indication signaling that is sent by the macro base station to activate the auxiliary SRB, and the processor is configured to activate, according to the indication signaling received by the receiver, Said auxiliary SRB.

Or

And the receiver is configured to receive indication signaling that is sent by the UE to activate the auxiliary SRB, where the processor is configured to activate the auxiliary SRB according to the indication signaling received by the receiver.

With reference to the fifth aspect or the first possible implementation manner of the fifth aspect, in a second possible implementation manner, the method further includes:

The processor is further configured to suspend the auxiliary SRB, so that the UE uses the radio resource control RRC connection to transmit RRC signaling with the macro base station, where the RRC connection is established between the UE and the macro base station.

In a third possible implementation, the processor is further configured to interact with the macro base station to determine an auxiliary SRB parameter for establishing the auxiliary SRB.

Or

The processor uses a default parameter of the SRB or the auxiliary SRB as an auxiliary SRB parameter for establishing the auxiliary SRB.

In a sixth aspect, the embodiment provides a user equipment, including: a processor, configured to establish a radio resource control RRC connection with the macro base station, so that the UE uses the RRC connection to transmit RRC signaling with the macro base station;

a receiver, configured to receive indication signaling for establishing a secondary SRB sent by the macro base station, so that the processor establishes an auxiliary SRB with a small cell base station according to the indication signaling received by the receiver; Also for suspending the RRC connection, activating the auxiliary SRB, such that the

The UE transmits the RRC signaling to the small cell base station by using the auxiliary SRB.

In a first possible implementation, the receiver is configured to receive indication signaling that is sent by the macro base station and suspend the RRC connection, where the processor is configured to hang according to the indication signaling received by the receiver. From the RRC connection.

In a second possible implementation, the processor is configured to measure signal quality between the UE and the small cell base station; when a signal quality between the UE and the small cell base station is higher than Or equal to the first preset threshold, suspending the RRC connection;

The user equipment further includes:

And a transmitter, configured to send, to the macro base station, indication signaling to suspend the RRC connection after the processor suspends the RRC connection.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, or the second possible implementation manner of the sixth aspect, in a third possible implementation manner, the method further includes:

The processor is further configured to suspend the auxiliary SRB, and activate the RRC connection, so that the UE transmits RRC signaling to the macro base station by using the RRC connection.

In a fourth possible implementation, the processor is configured to determine an auxiliary SRB parameter, where the auxiliary SRB parameter is used to establish the auxiliary SRB.

According to a seventh aspect, an embodiment of the present invention provides a system for cell communication, including the foregoing fourth aspect. The provided macro base station, the small cell base station provided by the fifth aspect, and the user equipment provided by the sixth aspect. The cell communication method, device, and system provided by the embodiment of the present invention, when a macro base station and a small cell base station can simultaneously provide communication services for the UE, an auxiliary SRB may be established between the small cell base station and the UE, by using the The auxiliary SRB transmits RRC signaling, and suspends the RRC connection between the UE and the macro base station, so that the macro base station does not need to transmit RRC signaling for the UE, which can save the air interface resources of the macro base station and improve the air interface of the macro base station. Resource utilization; On the other hand, it is not necessary to maintain communication between the macro base station and the UE, and the power consumption of the UE and the macro base station can be reduced.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description It is merely some embodiments of the present invention, and those skilled in the art can obtain other drawings according to these drawings without any creative work. 1 is a schematic flowchart of a cell communication method according to Embodiment 1 of the present invention; FIG. 2 is a schematic flowchart of a cell communication method according to Embodiment 2 of the present invention; FIG. 3 is a schematic flowchart of a cell communication method according to Embodiment 3 of the present invention; 4 is a schematic flowchart of a cell communication method according to Embodiment 4 of the present invention; FIG. 5 is a schematic structural diagram of a macro base station according to Embodiment 5 of the present invention; FIG. 6 is a schematic structural diagram of a macro base station according to Embodiment 6 of the present invention;

FIG. 7 is a schematic structural diagram of a macro base station according to Embodiment 7 of the present invention.

detailed description

The technical solution in the embodiment of the present invention will be clarified in the following with reference to the accompanying drawings in the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is apparent that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Embodiment 1

An embodiment of the present invention provides a cell communication method. As shown in FIG. 1, the method includes:

101. The macro base station establishes an RRC (Radio Resource Control) connection with the UE, and transmits RRC signaling to the UE by using the RRC connection.

The RRC connection is used to manage mobility of the UE, transmit RRC signaling, perform radio resource control, and the like. Specifically, when the UE performs handover between cells, or performs service bearer configuration, etc., the RRC signaling needs to be transmitted through an RRC connection established between the UE and the macro base station.

102. The macro base station sends, to the UE and the small cell base station, indication signaling for establishing a supplementary SRB (Signaling Radio Bearer), to indicate that the UE and the small cell base station establish the The secondary SRB is used by the UE to transmit RRC signaling to the small cell base station.

The small cell base station refers to a communication station with a relatively small coverage and a low transmission power, such as a HeNB (Home eNB, a home base station), a pico (micro base station), an RRH (Radio Remote Head), and the like. Specifically, the small cell base station is managed and controlled by the macro base station, and is used to provide communication services for the UE.

It should be noted that, in the prior art, when the macro base station and the small cell base station simultaneously provide communication services for the UE, the RRC signaling related to the UE is transmitted by the macro base station, and the small cell base station transmits the service data only to the UE. Different from the prior art, the method provided by the embodiment of the present invention can be used in the UE. A secondary SRB is established with the small cell base station, and the secondary SeNB enables the small cell base station to transmit RRC signaling with the UE. The SRB is a resource allocated by the access network node for signaling, and a mapping, multiplexing, and the like.

The cell communication method provided by the embodiment of the present invention, the small cell base station can transmit the RRC signaling with the UE, and the macro base station does not need to transmit the RRC signaling related to the UE, which can save the air interface resource of the macro base station and improve the air interface resource of the macro base station. Utilization; At the same time, the macro base station does not need to maintain communication with the UE, and can reduce the power consumption of the macro base station and the UE. Embodiment 2

An embodiment of the present invention provides a cell communication method. As shown in FIG. 2, the method includes:

201. The small cell (Small Cell) base station receives the indication signaling for establishing the auxiliary SRB sent by the macro base station, and establishes an auxiliary SRB with the user equipment UE.

The method provided by this embodiment may be implemented by a small cell base station, or may be implemented by a micro base station, where the small cell base station refers to a communication station with a relatively small coverage and a low transmission power, such as a HeNB. , pico, RRH, etc. Generally, the small cell base station is managed and controlled by the macro base station to provide communication services for the UE.

202. The small cell base station activates the auxiliary SRB, and uses the auxiliary SRB to transmit RRC signaling to the UE.

It is to be noted that the auxiliary SRB in this embodiment is an SRB established between the small cell base station and the UE, and the RRC connection can be established between the small cell base station and the UE by using the auxiliary SRB, thereby transmitting and UE-related RRC signaling, implementing control of the UE by the small cell base station, thereby establishing a service connection between the small cell base station and the UE, and implementing service data transmission Lose.

In the cell communication method provided by the embodiment of the present invention, the small cell base station may establish an auxiliary SRB with the UE, and transmit RRC signaling to the UE through the auxiliary SRB, so that the small cell base station can independently communicate with the UE. . With the method provided by the embodiment of the present invention, the macro base station and the UE are not required to transmit the RRC signaling, which can save the air interface resources of the macro base station; at the same time, the macro base station and the UE need no maintenance communication, and the power consumption of the macro base station and the UE can be reduced. the amount. Embodiment 3

An embodiment of the present invention provides a cell communication method. As shown in FIG. 3, the method includes: 301. A UE establishes an RRC connection with a macro base station, and uses the RRC connection to transmit RRC signaling with the macro base station. .

The method provided by the embodiment of the present invention is mainly performed by the UE side. The UE applicable to the method provided by this embodiment is mainly a mobile phone, and may also be other user terminal devices with communication functions, such as a tablet computer supporting a communication service, a multimedia player, and the like. .

The macro base station has a large coverage and can provide wide coverage to the UE. When the UE performs handover between cells, or initially accesses the communication network after the UE is started, the RRC connection needs to be established with the macro base station, and after the first RRC connection is established, the macro base station can The RRC signaling is transmitted between the UEs to establish a service connection to implement data transmission.

302. The UE receives the indication signaling for establishing the auxiliary SRB sent by the macro base station, and establishes an auxiliary SRB with the small cell base station.

The auxiliary SRB in this embodiment specifically refers to an SRB established between a small cell base station and a UE, and the small cell base station refers to a micro base that covers the current cell of the UE and can provide services for the UE. Stations, such as HeNB, pico, RRH, etc. In this embodiment, the UE can transmit RRC signaling with the small cell base station by using the auxiliary SRB, perform radio resource control according to the transmitted RRC signaling, and implement service data transmission.

303. The UE suspends the RRC connection, activates the auxiliary SRB, and uses the auxiliary SRB to transmit RRC signaling to the small cell base station.

It is to be noted that after the UE suspends the RRC connection, the signaling transmission with the macro base station is suspended; on the one hand, the air interface resource of the macro base station can be saved; on the other hand, the UE does not need maintenance and The communication between the macro base stations can reduce power consumption. It should be noted that the UE still needs to receive the paging message and the system message at the macro base station after suspending the RRC connection, or can receive the paging message and the system message of the macro base station through the small cell base station, optionally, The system message of the macro base station can be sent to the UE through the RRC dedicated signaling of the small cell base station.

In the cell communication method provided by the embodiment of the present invention, the UE can establish an auxiliary SRB with the small cell base station, and communicate with the small cell base station by using the auxiliary SRB, and can obtain the air interface resource of the macro base station without acquiring the RRC signaling from the macro base station. And reduce their own power consumption. Embodiment 4

An embodiment of the present invention provides a cell communication method. As shown in FIG. 4, the method includes: 401. A UE establishes an RRC connection with a macro base station, and transmits RRC signaling to the macro base station by using the RRC connection. And accessing the macro base station for communication.

In the communication system, the coverage of the macro base station is large, and it is possible to provide wide coverage to the UE. After the RRC connection is established, the macro base station can transmit RRC signaling with the UE, thereby establishing a service connection to implement data transmission. Specifically, when the location of the UE changes and switches between cells, Or, when the UE is initially connected to the communication network after being started, an RRC connection needs to be established between the UE and the macro base station.

402. When the macro base station detects that a small cell base station can provide communication service for the UE, perform information interaction with the small cell base station, determine a secondary SRB parameter, and instruct the small cell base station to negotiate as the UE. Provide an auxiliary SRB service.

Specifically, the UE reports the measurement information to the macro base station in the communication process, and the macro base station can determine, according to the measurement information of the UE, a small cell base station that can provide communication services for the UE. Optionally, when the macro base station determines the small cell base station that provides the communication service for the UE, the following information may be referred to: the load of the macro base station, the load of the small cell base station, and the UE caused by the small cell base station. Interference situation, etc.

For ease of understanding, the present embodiment provides the following three methods for determining the auxiliary SRB parameters for reference:

(1) The macro base station sends the SRB parameter used when establishing the RRC connection between the UE and the macro base station as the auxiliary SRB parameter, sends it to the small cell base station, and sends the auxiliary SRB parameter to The UE.

(2) the small cell base station sets the auxiliary SRB parameter, and sends the auxiliary SRB parameter to the macro base station;

The macro base station receives the auxiliary SRB parameter sent by the small cell base station, and sends the auxiliary SRB parameter to the UE.

(3) The macro base station instructs the UE and the small cell base station to adopt the SRB or the assistance specified by the protocol.

The default parameter of the SRB is the auxiliary SRB parameter.

It is worth noting that when the auxiliary SRB parameters are determined by the above method (3), In the case where the default parameters specified by the protocol are used as the secondary SRB, the relevant operations for determining the secondary SRB parameters may be omitted in step 402.

Optionally, the macro eNB establishes a secondary radio frequency carrier (DSB) between the UE and the small cell base station, and the auxiliary SRB is configured to provide the auxiliary SRB. The service data is transmitted between the UE and the small cell base station. The auxiliary DRB in this embodiment specifically refers to the DRB established between the UE and the small cell base station. Optionally, the auxiliary DRB may also be established before the auxiliary SRB is established. If the small cell base station has provided the assisted DRB service for the UE before negotiating the auxiliary SRB, the relevant operation of determining the auxiliary SRB parameter may be omitted in step 402.

403. The macro base station separately sends indication signaling for establishing an auxiliary SRB to the UE and the small cell base station, to indicate that the UE and the small cell base station establish the auxiliary SRB, where the auxiliary

The SRB is used for transmitting the RRC signaling by the UE and the small cell base station.

404. The UE and the small cell base station receive the indication signaling for establishing the auxiliary SRB sent by the macro base station, and establish an auxiliary SRB between the UE and the small cell base station according to the indication signaling.

Specifically, if the macro base station sends the setup auxiliary SRB message, which further includes establishing a DRB parameter with the small cell base station, the UE and the small cell base station may establish a DRB with the small cell base station according to the parameter information of the DRB. The DRB parameter may be configured by the macro base station, or the macro base station and the small cell base station may be configured by negotiation.

If no DRB is established between the UE and the small cell base station before the establishment of the secondary SRB, the macro base station may carry the dedicated RACH (random access channel) resource of the small cell base station in the secondary SRB establishment indication signaling, and the UE may The dedicated RACH resources of the cell base station pass the non-competition

The RACH mode establishes a connection with a small cell base station. It should be noted that the auxiliary SRB in this embodiment specifically refers to an SRB established between a small cell base station and a UE, and the RRC related to the UE can be transmitted between the small cell base station and the UE by using the auxiliary SRB. The signaling is implemented to implement control of the UE by the small cell base station, so as to implement management of service connection and transmission of service data between the small cell base station and the UE.

405. The macro base station suspends the RRC connection, and sends indication signaling for activating the auxiliary SRB to the small cell base station and/or the UE to activate the auxiliary SRB.

Specifically, in order to implement step 405, the following two implementation methods are provided for reference, as follows:

method one:

Sl, the macro base station receives the measurement report sent by the UE, and determines a signal quality between the UE and the small cell base station according to the measurement report;

S2, when the signal quality between the UE and the small cell base station is higher than or equal to the first preset threshold, the macro base station actively suspends the RRC connection, and sends the RRC connection to the UE to suspend and activate. The indication signaling of the auxiliary SRB;

S3. The macro base station sends, to the small cell base station, indication signaling for activating the auxiliary SRB.

The first preset threshold is preset by the macro base station.

It is worth noting that step S3 in method one is optional. After the macro base station sends the indication signaling for suspending the RRC connection to the UE, it is not necessary to send the indication signaling for activating the auxiliary SRB to the small cell base station; the UE may directly use the auxiliary SRB to the small The cell base station transmits the RRC signaling; after the small cell base station receives the RRC signaling sent by the UE by using the auxiliary SRB, the auxiliary SRB can be actively activated. Method Two:

The S1, the UE measures the signal quality, and when detecting that the signal quality between the UE and the small cell base station is higher than or equal to the first preset threshold, sends an indication message suspending the RRC connection to the macro base station. Order

S2. The macro base station suspends the RRC connection according to the indication signaling, and sends an indication signaling for activating the auxiliary SRB to the small cell base station.

The first preset threshold is preset by the macro base station, and is pre-configured to the UE. In step S2 of the second method, the macro base station instructs the small cell base station to activate the auxiliary SRB. Optionally, as an alternative to step S2, the small cell base station may be instructed by the UE to activate the auxiliary SRB, for example, the UE sends an indication to the small cell base station to activate the auxiliary SRB. Signaling, such that the small cell base station activates the secondary SRB after receiving the indication signaling.

It is worth noting that step S2 in method two is optional. After the macro base station receives the indication signaling for suspending the RRC connection sent by the UE, the UE and the macro base station do not need to send the indication signaling for activating the auxiliary SRB to the small cell base station. The UE may directly use the secondary SRB to transmit RRC signaling to the small cell base station; after the small cell base station receives the RRC signaling sent by the UE by using the secondary SRB, the UE can actively activate the auxiliary SRB.

Specifically, the auxiliary SRB of the small cell base station is used to transmit RRC signaling. Optionally, the small cell base station may also have a partial RRC function, for example, NSA (Non Access Layer) signaling transmission and management. SRB parameters, DRB parameters, etc. of the small cell base station. When the SRB parameter and the DRB parameter of the small cell base station change, the small cell base station needs to send a reconfiguration message to reconfigure the UE.

It should be noted that the macro base station can still guarantee after suspending the RRC connection with the UE. It retains functions such as paging to the UE, processing measurement reports of the UE, and managing mobility of the UE. Optionally, the measurement report processing of the UE may also be processed by the small cell base station.

406. The small cell base station and the UE use the auxiliary SRB to transmit RRC signaling. Specifically, the UE can transmit an RRC signaling to the small cell base station by using the auxiliary SRB, and implement service data transmission according to the RRC signaling management service connection.

It is to be noted that, in the process of using the auxiliary SRB to transmit RRC signaling, the small cell base station may forward the RRC signaling related to the macro base station sent by the UE to the macro base station, for example, the UE. Location information, measurement reports of the UE, and the like.

407. When the specified condition is met, suspending the auxiliary SRB between the UE and the small cell base station, and activating an RRC connection between the UE and the macro base station.

The "specified condition" includes at least the following three scenarios:

Scenario 1: The signal quality between the UE and the small cell base station is lower than the first preset threshold.

For example, the location of the UE is changed beyond the coverage of the small cell base station, and the small cell base station cannot guarantee normal communication of the UE. In this case, the macro base station needs to provide communication services for the UE.

Scenario 2: The signal quality between the UE and the macro base station is lower than the second preset threshold.

For example: The location of the UE changes, and inter-cell handover is required. The macro base station needs to activate the said

The RRC connection is configured to re-establish an RRC connection for the UE according to the target cell that the UE needs to handover.

Scenario 3: The small cell base station has a large load and cannot guarantee normal communication of the UE.

At this time, the small cell base station cannot guarantee the communication quality of the UE. The number of terminals in the coverage area of the small cell base station is large, and the load is too heavy. The macro base station needs to reselect a new small cell base for the UE. Station service, or return to the macro base station to receive the service.

Specifically, with regard to the specific implementation manner of the step 407, the following three methods are provided for reference:

method one:

The macro base station instructs the small cell base station to suspend the auxiliary SRB, including:

The macro base station receives the measurement report of the UE forwarded by the small cell base station, and determines the signal quality between the UE and the macro base station and the signal quality between the UE and the small cell base station according to the measurement report.

When the macro base station detects that the signal quality between the UE and the small cell base station is lower than the first preset threshold, or the signal quality between the UE and the macro base station is lower than the second preset threshold, The small cell base station sends the indication signaling for suspending the auxiliary SRB, and instructs the small cell base station to notify the UE to activate the RRC connection with the macro base station.

The first preset threshold and the second preset threshold are preset by the macro base station.

Specifically, in a scenario in which the macro eNB determines that the RRC connection needs to be activated, the macro eNB allocates a dedicated RACH (Random Access Channel) resource to the UE. The macro base station may carry the dedicated RACH resource in the indication signaling sent to the UE, or the macro base station may instruct the small cell to notify the UE to listen to the PDCCH order of the macro base station (Physical Downlink Control) Channel order, physical downlink control channel command), so that the UE acquires non-contention RACH resource information.

It is to be noted that, in this embodiment, the UE is listening to the PDCCH order of the macro base station, and the UE is listening to the PDCCH of the macro base station to obtain the PDCCH order included in the PDCCH. A description method of "listening the PDCCH order of the macro base station". The small cell base station receives the indication signaling sent by the macro base station, sends an indication signaling for suspending the auxiliary SRB to the UE, and instructs the UE to activate an RRC connection with the macro base station, and suspends the Auxiliary SRB.

Specifically, the small cell base station may indicate that the UE activates an RRC connection with the macro base station by using the following method:

The small cell base station forwards the dedicated RACH resource acquired by the macro base station to the UE, so that the UE initiates a non-contention random access procedure to the macro base station according to the dedicated RACH resource; or

The small cell base station sends an indication signal to the UE to listen to the PDCCH order of the macro base station, so that the UE listens to the PDCCH order of the macro base station.

54. The small cell base station feeds back the acknowledgement information of the auxiliary SRB to the macro base station.

After receiving the acknowledgement information sent by the small cell base station, the macro base station actively activates the RRC connection, and starts to listen to the UE to send a dedicated preamble (preamble); or the macro base station sends a PDCCH order to the UE. So that the UE obtains the resource information of the dedicated RACH.

S6. The UE suspends the auxiliary SRB according to the indication signaling sent by the small cell base station, and activates an RRC connection with the macro base station.

Specifically, the RRC connection between the UE and the macro base station may be as follows: The UE sends a dedicated preamble (preamble) to the macro base station according to the dedicated RACH resource sent by the small cell base station, so as to initiate a non-contention random access procedure, acquiring uplink synchronization, and using the RRC connection to transmit RRC signaling with the macro base station; or

The UE listens to the PDCCH order of the macro base station according to the indication signaling sent by the small cell base station, and initiates a non-contention random access process to the macro base station according to the information of the PDCCH order. Taking uplink synchronization, activation uses the RRC connection to transmit RRC signaling with the macro base station. It is to be noted that the dedicated RACH resource is not included in the indication signaling sent by the small cell base station received by the UE, or the small cell base station does not send the PDCCH order of the macro base station to the UE. The indication signaling, the UE may use the competing RACH resource to acquire uplink synchronization, and activate an RRC connection with the macro base station. Method Two:

The small cell base station actively suspends the auxiliary SRB connection, and instructs the UE to suspend the auxiliary SRB connection, including:

And receiving, by the small cell, the measurement report sent by the UE, determining, according to the measurement report, a signal quality between the UE and the small cell base station, and a signal quality between the UE and the macro base station.

52. When the small cell base station detects that the signal quality between the UE and the small cell base station is lower than a first preset threshold, or that the signal quality between the UE and the macro base station is lower than a second preset When the threshold, or the small cell base station needs to reduce the load, the small cell base station actively suspends the auxiliary SRB, and sends indication signaling for activating the RRC connection to the macro base station.

The first preset threshold and the second preset threshold are preset by the macro base station, and are preset to the small cell base station.

After receiving the indication signaling for activating the RRC connection sent by the small cell base station, the macro base station sends an acknowledgement message for activating the RRC connection to the small cell base station.

Optionally, the macro base station may carry, in an acknowledgment message sent to the small cell base station, a dedicated RACH resource allocated by the macro base station to the UE, where the dedicated RACH resource is used for The UE activates the RRC connection with the macro base station; or the macro base station may instruct the small cell base station to pass the order, the physical downlink control channel command), so that the UE acquires the non-contention RACH resource information.

After receiving the acknowledgment message sent by the macro eNB, the small cell base station sends an indication signaling for suspending the auxiliary SRB to the UE, and notifies the UE to activate the RRC connection with the macro base station.

Specifically, the small cell base station may notify the UE to activate an RRC connection with the macro base station by using the following method:

The small cell base station sends indication signaling for listening to the PDCCH order to the UE, so that the UE listens to the PDCCH order of the macro base station.

55. The UE suspends the auxiliary SRB according to the indication signaling sent by the small cell base station, and activates an RRC connection with the macro base station.

The UE listens to the PDCCH order of the macro base station according to the indication signaling sent by the small cell base station, and initiates a non-contention random access procedure to the macro base station according to the information of the PDCCH order, acquires uplink synchronization, and activates to use the RRC. The connection and the macro base station transmit RRC signaling.

It is worth noting that the indication signaling sent by the small cell base station received by the UE is not included. The dedicated RACH resource, or the small cell base station does not send the indication signaling of the PDCCH order of the macro base station to the UE, the UE may use the competitive RACH resource to obtain uplink synchronization, and activate the Acer base. RRC connection between stations. Method three:

The auxiliary SRB connection is suspended by the UE, and the small cell base station is instructed to suspend the auxiliary SRB connection, including:

51. The UE measures the signal of the small cell base station and the macro base station; when detecting that the signal quality between the base station with the small cell is lower than the first preset threshold, or the signal quality between the macro base station and the macro base station is lower than the second When the threshold is preset, the UE suspends the auxiliary SRB, activates an RRC connection with the macro base station, and sends an indication signaling suspending the auxiliary SRB to the small cell base station.

The first preset threshold and the second preset threshold are pre-configured by the macro base station to the UE. Specifically, if the UE performs a contention random access procedure to access the macro base station to activate the RRC connection, performing steps S2 and S3; if the UE performs a non-contention random access procedure to access the macro base station to activate the In the RRC connection, steps S2 and S3 are ignored, and step S4 is directly executed.

52. The small cell base station suspends the auxiliary SRB according to the indication signaling sent by the UE.

53. The UE initiates a contention random access procedure to the macro base station to obtain uplink synchronization of the macro base station, and activate an RRC connection with the macro base station.

Optionally, in a contention random access procedure performed by the UE to the macro base station, the UE may be carried in the msg3 (message 3, usually an RRC connection request) of the contention random access procedure. An indication message indicating that the macro base station activates the RRC connection.

It is worth noting that the order of steps S2 and S3 can also be performed first, then S3 Line S2, there is no limit here.

54. The small cell base station sends indication signaling for activating an RRC connection to the macro base station according to the indication signaling sent by the UE.

After receiving the indication signaling for activating the RRC connection sent by the small cell base station, the macro eNB sends an RRC connection confirmation message to the small cell base station, where the acknowledgment message may include: the macro base station allocates the UE a dedicated RACH resource, where the dedicated RACH resource is used for the UE to activate an RRC connection with the macro base station; or the macro base station may also instruct the small cell base station to notify the UE to listen to the macro base station. PDCCH order to obtain non-competitive RACH resources.

The small cell base station receives the acknowledgement message sent by the macro base station, and forwards the dedicated RACH resource to the UE, or the small cell base station instructs the UE to listen to the macro base station.

PDCCH order.

The UE performs a non-contention random access procedure according to the dedicated RACH resource forwarded by the small cell base station or the indication signaling of the PDCCH order, and activates an RRC connection with the macro base station and the macro base station. Transmit RRC signaling.

Specifically, the UE sends a dedicated preamble (preamble) to the macro base station according to the dedicated RACH resource sent by the small cell base station, thereby initiating a non-contention random access procedure, acquiring uplink synchronization, and activating using the RRC connection and The macro base station transmits RRC signaling; or

In this embodiment, the measurement and monitoring of the signal quality may be RSRP (Reference Signal Receiving Power) / RSRQ (Reference Signal Receiving) Quality, reference signal reception quality) measurement, or CQI (Channel Quality Indicator) measurement, but not limited to this.

408. The UE and the macro base station transmit RRC signaling by using the RRC connection, and the macro base station provides a communication service for the UE, and performs radio resource control.

The cell communication method provided by the embodiment of the present invention, when the macro base station and the small cell base station can simultaneously

When the UE provides the communication service, the auxiliary SRB may be established between the small cell base station and the UE, and the RRC signaling is transmitted through the auxiliary SRB, and the RRC connection between the UE and the macro base station is suspended. The macro base station does not need to transmit the RRC signaling for the UE, saves the air interface resources of the macro base station, and improves the air interface resource utilization of the macro base station. On the other hand, the communication between the macro base station and the UE is not required to be maintained, and the UE and the Acer can be reduced. The power consumption of the station. Embodiment 5

The embodiment of the present invention provides a macro base station, which can implement the method performed by the macro base station in the first embodiment and the fourth embodiment. As shown in FIG. 5, the macro base station includes:

The processor 51 is configured to establish a radio resource control RRC connection with the user equipment UE, by using the

RRC connecting with the UE to transmit RRC signaling;

The transmitter 52 is configured to separately send, to the UE and the small cell base station, indication signaling for establishing an auxiliary signaling radio bearer SRB, to indicate that the UE and the small cell base station establish the auxiliary SRB, where the auxiliary The SRB is used for the UE to transmit RRC signaling with the small cell base station.

Optionally, the processor 52 is further configured to actively suspend the RRC connection;

The transmitter 52 is further configured to send, to the UE, indication signaling that suspends the RRC connection, instructing the UE to suspend the RRC connection; And transmitting, to the small cell base station, indication signaling that activates the auxiliary SRB, so that the small cell base station uses the auxiliary SRB to transmit RRC signaling with the UE.

As shown in FIG. 5, the macro base station further includes:

The receiver 53 is configured to receive indication signaling that suspends the RRC connection sent by the UE, where the processor 51 is further configured to suspend the indication according to the indication signaling received by the receiver 53.

RRC connection;

The transmitter 52 is further configured to send, to the small cell base station, indication signaling that activates the auxiliary SRB, to instruct the small cell base station to activate the auxiliary SRB, so that the small cell base station uses the auxiliary SRB and The UE transmits RRC signaling.

Optionally, the processor 51 is further configured to activate the RRC connection, so that the macro base station transmits RRC signaling to the UE by using the RRC connection.

Optionally, the processor 51 is specifically configured to actively activate the RRC connection;

The transmitter 52 is configured to send, to the small cell base station, indication signaling for suspending the auxiliary SRB, instructing the small cell base station to suspend the auxiliary SRB, so that the UE uses the RRC connection to transmit an RRC. Signaling.

Optionally, the receiver 53 is configured to receive the indication signaling that is sent by the small cell base station to activate the RRC connection.

The processor 51 is configured to activate the RRC connection according to the indication signaling received by the receiver.

Optionally, the processor 51 is further configured to allocate a dedicated RACH resource to the UE, instructing the transmitter 52 to send a physical downlink control channel command PDCCH order to the UE, and triggering the UE to initiate a non-exhaustion to the macro base station. Competing for a random access procedure, so that the UE acquires uplink synchronization, and activates Transmitting RRC signaling using the RRC connection;

Or

The processor 51 is further configured to allocate a dedicated RACH resource to the UE, and forward the dedicated RACH resource to the UE by using the small cell base station, and trigger the UE to initiate a non-contention random access process to the macro base station. So that the UE acquires uplink synchronization, and activates to use the RRC connection to transmit RRC signaling.

Optionally, the receiver 53 is configured to receive an indication message of the activated RRC connection sent by the UE, where the indication message is included in the message 3 of the contention random access procedure;

The processor 51 is further configured to process a contention random access procedure initiated by the UE according to the indication message received by the receiver, and activate the RRC connection.

Optionally, the processor 51 is further configured to interact with the small cell base station, determine a secondary SRB parameter, and instruct the transmitter 52 to send the secondary SRB parameter to the UE, so that the UE and The small cell base station establishes the auxiliary SRB according to the auxiliary SRB parameter;

Or

The processor 51 is further configured to indicate that the UE and the small cell base station use SRB or auxiliary

The default parameters of the SRB establish the secondary SRB.

Optionally, the transmitter 52 is configured to send the RRC connected SRB parameter to the small cell base station as the auxiliary SRB parameter.

Or

The receiver 53 is configured to receive an auxiliary SRB parameter sent by the small cell base station.

The macro base station provided by the embodiment of the present invention can enable the small cell base station to transmit RRC signaling with the UE, and the macro base station does not need to transmit the RRC signaling related to the UE, thereby saving the air interface of the macro base station. The resource improves the utilization of the air interface resource of the macro base station; at the same time, the macro base station does not need to maintain communication with the UE, and can reduce the power consumption of the macro base station. Embodiment 6

The embodiment of the present invention provides a small cell base station, which can implement the method performed by the small cell base station in the second embodiment and the fourth embodiment. As shown in FIG. 6, the small cell base station includes:

The receiver 61 is configured to receive an indication signal that is sent by the macro base station to establish an auxiliary signaling radio bearer SRB.

The processor 62 is configured to establish an auxiliary SRB with the user equipment UE according to the indication signaling received by the receiver 61;

Optionally, the receiver 61 is configured to receive indication signaling that is sent by the macro base station to activate the auxiliary SRB.

The processor 62 is configured to activate the auxiliary according to the indication signaling received by the receiver 61.

SRB.

Or

The receiver 61 is configured to receive the indication signaling that is sent by the UE to activate the auxiliary SRB, and the processor 62 is configured to activate the auxiliary SRB according to the indication signaling received by the receiver 61.

As shown in FIG. 6, the small cell base station further includes:

a transmitter 63, configured to forward, to the RRC signaling related to the macro base station, sent by the UE to The macro base station.

Optionally, the processor 62 is further configured to suspend the auxiliary SRB, so that the UE uses the radio resource control RRC connection to transmit RRC signaling with the macro base station, where the RRC connection is established by the UE and the Acer base. Between the stations.

Optionally, the receiver 61 is configured to receive indication signaling that is sent by the macro base station and suspend the auxiliary SRB.

The processor 62 is configured to suspend the auxiliary SRB according to the indication signaling received by the receiver 61.

Optionally, the transmitter 63 is configured to: after the processor 62 suspends the auxiliary SRB, send, to the UE, indication signaling that suspends the auxiliary SRB and intercepts a physical downlink control channel command PDCCH order. Instructing the UE to suspend the secondary SRB, and instructing the UE to listen to the PDCCH order of the macro base station, triggering the UE to initiate a non-contention random access procedure, so that the UE acquires uplink synchronization, and activates Transmitting RRC signaling with the macro base station using the RRC connection; or

The transmitter 63 is further configured to: after the processor 62 suspends the auxiliary SRB, forward the obtained dedicated RACH resource allocated by the macro base station to the UE to the UE, triggering the UE according to the The dedicated RACH resource initiates a non-contention random access procedure to the macro base station, so that the UE acquires uplink synchronization, and activates to use the RRC connection to transmit RRC signaling with the macro base station.

Optionally, the receiver 61 is further configured to receive indication signaling that is sent by the UE and suspend the auxiliary SRB.

The processor 62 is configured to suspend the auxiliary SRB according to the indication signaling received by the receiver 61. Optionally, the transmitter 63 is configured to: after the processor 62 suspends the auxiliary SRB, send, to the macro base station, indication signaling that activates the RRC connection, and instruct the macro base station to establish the RRC. Connection;

And sending, to the UE, indication signaling for intercepting a physical downlink control channel command PDCCH order, instructing the UE to suspend the auxiliary SRB, and instructing the UE to listen to a PDCCH order of the macro base station, triggering the UE to initiate The non-contention random access procedure is such that the UE acquires uplink synchronization, and activates to use the RRC connection to transmit RRC signaling with the macro base station.

Optionally, the transmitter 63 is further configured to: after the processor 62 suspends the auxiliary SRB, send, to the macro base station, indication signaling that activates the RRC connection, instructing the macro base station to establish the RRC connection; and

And sending a dedicated RACH resource request message to the macro base station, to obtain the dedicated RACH resource allocated by the macro base station to the UE, and forwarding the dedicated RACH resource to the UE, triggering the UE to use the dedicated RACH resource according to the dedicated RACH resource. Initiating a non-contention random access procedure to the macro base station, so that the UE acquires uplink synchronization, and activates using the RRC connection to transmit RRC signaling with the macro base station.

Optionally, the processor 62 is further configured to actively suspend the auxiliary SRB.

After the processor suspends the auxiliary SRB, the transmitter 63 sends an indication signaling suspending the auxiliary SRB to the UE, so that the UE performs contention random access to the macro base station. Process;

And transmitting, to the macro base station, indication signaling for activating the RRC connection, instructing the macro base station to activate the RRC connection.

Optionally, the transmitter 63 is configured to: after the processor 62 suspends the auxiliary SRB, Transmitting, by the macro base station, indication signaling that activates the RRC connection, instructing the macro base station to activate the RRC connection; and

And sending, to the UE, indication signaling that suspends the auxiliary SRB, and intercepts a physical downlink control channel command PDCCH order, instructing the UE to suspend the auxiliary SRB, and instructing the UE to listen to the PDCCH of the macro base station. Order, triggering, by the UE, to initiate a non-contention random access procedure, so that the UE acquires uplink synchronization, and activates to use the RRC connection to transmit RRC signaling with the macro base station; or

The transmitter 63 is further configured to forward the obtained dedicated RACH resource allocated by the macro base station to the UE to the UE, and trigger the UE to initiate a non-contention random to the macro base station according to the dedicated RACH resource. And the access process, so that the UE acquires uplink synchronization, and activates to use the RRC connection to transmit RRC signaling with the macro base station.

Optionally, the processor 62 is further configured to interact with the macro base station to determine an auxiliary SRB parameter for establishing the auxiliary SRB.

Or

The processor 62 uses the default parameters of the SRB or the secondary SRB as the secondary SRB parameters for establishing the secondary SRB.

Optionally, the processor 62 is configured to set the SRB parameter, and the transmitter 63 is configured to send the SRB parameter set by the processor 62 to the macro base station;

Or

The receiver 61 is configured to receive an SRB parameter of an RRC connection sent by the macro base station, where the processor 62 is configured to use an SRB parameter received by the receiver 61 as the auxiliary SRB parameter, where the RRC connection is established. Between the UE and the macro base station. The small cell base station provided by the embodiment of the present invention may establish an auxiliary SRB with the UE, and transmit RRC signaling to the UE through the auxiliary SRB, so that the small cell base station can independently communicate with the UE. The method provided by the embodiment of the present invention can save the air interface resources of the macro base station without the macro base station and the UE transmitting the RRC signaling. At the same time, the macro base station and the UE need no maintenance communication, and the power consumption of the macro base station and the UE can be reduced. the amount. Example 7

The embodiment of the present invention provides a user equipment UE, which can implement the method performed by the UE in the third embodiment and the fourth embodiment. As shown in FIG. 7, the UE includes:

The processor 71 is configured to establish a radio resource control RRC connection with the macro base station, so that the UE transmits the RRC signaling with the macro base station by using the RRC connection;

The receiver 72 is configured to receive the indication signaling for establishing the auxiliary SRB sent by the macro base station, so that the processor 71 establishes an auxiliary SRB with the small cell base station according to the indication signaling received by the receiver 72.

The processor 71 is further configured to suspend the RRC connection, and activate the auxiliary SRB, so that the UE uses the auxiliary SRB to transmit RRC signaling to the small cell base station.

Optionally, the receiver 72 is configured to receive, by the macro base station, indication signaling that suspends the RRC connection;

The processor 71 is configured to suspend the RRC connection according to the indication signaling received by the receiver 72.

Optionally, the processor 71 is configured to measure signal quality between the UE and the small cell base station; when a signal quality between the UE and the small cell base station is higher than or equal to the first Pre When the threshold is set, the RRC connection is suspended;

As shown in FIG. 7, the user equipment further includes:

The transmitter 73 is configured to send, to the macro base station, indication signaling to suspend the RRC connection after the processor 71 suspends the RRC connection.

Optionally, the processor 71 is further configured to suspend the auxiliary SRB, and activate the RRC connection, so that the UE uses the RRC connection to transmit RRC signaling with the macro base station.

Optionally, the receiver 72 is configured to receive indication signaling that is sent by the small cell base station and suspend the auxiliary SRB.

The processor 71 is configured to suspend the auxiliary SRB according to the indication signaling received by the receiver 72.

Optionally, the processor 71 is configured to measure a signal of the small cell base station and a signal of the macro base station; when a signal quality between the UE and the small cell base station is lower than a first pre- Setting a threshold, or when the signal quality between the UE and the macro base station is lower than a second preset threshold, suspending the auxiliary SRB;

The transmitter 73 is configured to send, to the small cell base station, an indication signal that suspends the auxiliary SRB, and instruct the small cell base station to suspend the auxiliary SRB;

The processor 71 is configured to perform a contention random access procedure to the macro base station, and send an indication message that activates the RRC connection to the macro base station, instructing the macro base station to activate the RRC connection, using the macro base The RRC connection of the station transmits the RRC signaling of the UE, where the indication message is included in the message 3 of the contention random access procedure.

Optionally, the receiver 72 is configured to receive, by the small cell base station, a signaling message that suspends the auxiliary SRB, where the processor 71 is configured to hang according to the signaling message received by the receiver 72. Starting the auxiliary SRB;

The processor 71 is configured to listen to the PDCCH order after the receiver 72 receives the indication signaling that is sent by the small cell base station to listen to the physical downlink control channel command PDCCH order of the macro base station. The macro base station initiates a non-contention random access procedure, acquires uplink synchronization, and activates to use the RRC connection to transmit RRC signaling with the macro base station;

Or

The processor 71 is configured to: after the receiver 72 receives the dedicated RACH resource forwarded by the small cell base station, initiate a non-contention random access procedure to the macro base station according to the dedicated RACH resource, to obtain uplink synchronization. And using the RRC connection to transmit RRC signaling with the macro base station, where the dedicated RACH resource is allocated by the macro base station to the UE.

Optionally, the processor 71 is configured to determine an auxiliary SRB parameter, where the auxiliary SRB parameter is used to establish the auxiliary SRB.

Optionally, the processor 71 is specifically configured to receive the auxiliary SRB parameter sent by the macro base station; or

The processor 71 is configured to adopt a default parameter of the SRB or the auxiliary SRB as the auxiliary SRB parameter.

Optionally, the receiver 72 is further configured to acquire the first preset threshold and the second preset threshold configured by the macro base station.

The UE provided by the embodiment of the present invention can establish a secondary SRB with the small cell base station, and communicate with the small cell base station by using the auxiliary SRB, without acquiring RRC signaling from the macro base station, saving the air interface resources of the macro base station and reducing the self consumption. Electricity.

The embodiment of the invention further provides a system for cell communication, including the macro base station and the diagram shown in FIG. The small cell base station shown in FIG. 6 and the user equipment shown in FIG. 7 can implement the cell communication method provided in Embodiment 4 of the foregoing method, and details are not described herein again.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus necessary general hardware, and of course, can also be through hardware, but in many cases the former is a better implementation. . Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer. A hard disk or optical disk or the like includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

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

Claims

Rights request

1. A cell communication method, characterized by including:

Establish a radio resource control RRC connection with the user equipment UE, and transmit RRC signaling with the UE through the RRC connection;

Send instruction signaling for establishing an auxiliary signaling radio bearer SRB to the UE and the small cell base station respectively to instruct the UE and the small cell base station to establish the auxiliary SRB, and the auxiliary SRB is used for the The UE transmits RRC signaling with the small cell base station.

2. The method according to claim 1, characterized in that, after sending instruction signaling to establish the auxiliary SRB to the UE and the small cell base station respectively, it further includes:

Actively suspend the RRC connection;

Send instruction signaling to suspend the RRC connection to the UE, instructing the UE to suspend the RRC connection; and

Send an instruction signaling to activate the auxiliary SRB to the small cell base station, so that the small cell base station uses the auxiliary SRB to transmit RRC signaling with the UE.

3. The method according to claim 1, characterized in that, after sending instruction signaling to establish the auxiliary SRB to the UE and the small cell base station respectively, it further includes:

Receive the instruction signaling sent by the UE to suspend the RRC connection, and suspend the RRC connection according to the instruction signaling;

Send an instruction signaling to activate the auxiliary SRB to the small cell base station to instruct the small cell base station to activate the auxiliary SRB, so that the small cell base station uses the auxiliary SRB to transmit RRC signaling with the UE.

4. The method according to claim 2 or 3, further comprising: Reactivate the RRC connection and use the RRC connection to transmit RRC signaling with the UE.

5. The method according to claim 4, characterized in that: reactivating the RRC connection and using the RRC connection to transmit RRC signaling with the UE includes:

Actively reactivate the RRC connection;

Send an instruction signaling to suspend the auxiliary SRB to the small cell base station, instructing the small cell base station to suspend the auxiliary SRB, so that the UE uses the RRC connection to transmit RRC signaling.

6. The method according to claim 4, characterized in that the reactivation of the RRC connection includes:

Receive the instruction signaling for activating the RRC connection sent by the small cell base station, and reactivate the RRC connection according to the instruction signaling.

7. The method according to claim 5 or 6, characterized in that reactivating the RRC connection and using the RRC connection to transmit RRC signaling with the UE includes:

Allocate dedicated random access channel RACH resources to the UE, send a physical downlink control channel command PDCCH order to the UE, and trigger the UE to use the RACH resources to initiate a non-contention random access process to the macro base station, so that the The UE obtains uplink synchronization and reactivates the use of the RRC connection to transmit RRC signaling;

or

Allocate dedicated RACH resources to the UE, forward the dedicated RACH resources to the UE through the small cell base station, and trigger the UE to use the RACH resources to initiate a non-contention random access process to the macro base station, so that The UE acquires uplink synchronization and reactivates the use of the RRC connection to transmit RRC signaling.

8. The method according to claim 4, characterized in that: the reactivating the RRC connection Connect, including:

Processing the contention random access process initiated by the UE and reactivating the RRC connection, specifically including:

Receive an indication message for activating the RRC connection sent by the UE, where the indication message is included in message 3 of the contention random access process.

9. The method according to any one of claims 1 to 8, characterized in that, before sending the instruction signaling to establish the auxiliary signaling radio bearer SRB to the UE and the small cell base station respectively, further comprising: :

Interact with the small cell base station, determine auxiliary SRB parameters, and send the auxiliary SRB parameters to the UE, so that the UE and the small cell base station establish the auxiliary SRB according to the auxiliary SRB parameters;

or

Instruct the UE and the small cell base station to use the default parameters of the SRB or the auxiliary SRB to establish the auxiliary SRB.

10. The method according to claim 9, characterized in that the interaction with the small cell base station to determine the auxiliary SRB parameters includes:

Send the SRB parameters of the RRC connection to the small cell base station as the auxiliary SRB parameters;

or

Receive the auxiliary SRB parameters sent by the small cell base station.

11. A cell communication method, characterized by:

Receive the instruction signaling sent by the macro base station to establish the auxiliary signaling wireless bearer SRB, and establish communication with the user. Auxiliary SRB between devices UE;

Activate the auxiliary SRB, and use the auxiliary SRB to transmit RRC signaling with the UE.

12. The method of claim 11, wherein activating the auxiliary SRB includes:

Receive the instruction signaling sent by the macro base station to activate the auxiliary SRB, and activate the auxiliary SRB according to the instruction signaling;

or

Receive the instruction signaling sent by the UE to activate the auxiliary SRB, and activate the auxiliary SRB according to the instruction signaling.

13. The method according to claim 11 or 12, characterized in that, when using the auxiliary

After the SRB transmits RRC signaling with the UE, it also includes:

Forward the RRC signaling related to the macro base station sent by the UE to the macro base station.

14. The method according to any one of claims 11-13, characterized in that, after using the auxiliary SRB to transmit RRC signaling with the UE, it further includes:

The auxiliary SRB is suspended so that the UE uses a radio resource control RRC connection to transmit RRC signaling with the macro base station, and the RRC connection is established between the UE and the macro base station.

15. The method of claim 14, wherein suspending the auxiliary SRB includes:

Receive the instruction signaling sent by the macro base station to suspend the auxiliary SRB, and suspend the auxiliary SRB according to the instruction signaling.

16. The method according to claim 15, characterized in that: receiving an instruction signaling to suspend the auxiliary SRB sent by the macro base station, and suspending one of the auxiliary SRBs according to the instruction signaling. Finally, it also includes:

Send instruction signaling to the UE to suspend the auxiliary SRB and listen to the physical downlink control channel command PDCCH order, instruct the UE to suspend the auxiliary SRB, and instruct the UE to listen to the PDCCH of the macro base station. order, trigger the UE to initiate a non-contention random access process, so that the UE obtains uplink synchronization and activates the use of the RRC connection to transmit RRC signaling with the macro base station; or

Obtain the dedicated random access channel RACH resources allocated by the macro base station to the UE, forward the dedicated RACH resources to the UE, and trigger the UE to initiate non-competition to the macro base station according to the dedicated RACH resources. A random access process, so that the UE obtains uplink synchronization and activates the use of the RRC connection to transmit RRC signaling with the macro base station.

17. The method according to claim 14, characterized in that: suspending the auxiliary SRB to enable the UE to use a radio resource control RRC connection to transmit RRC signaling with the macro base station includes: receiving the UE The instruction signaling to suspend the auxiliary SRB is sent, and the auxiliary SRB is suspended according to the instruction signaling.

18. The method according to claim 17, characterized in that, after receiving the instruction signaling to suspend the auxiliary SRB sent by the UE and suspending the auxiliary SRB according to the instruction signaling, further comprising: :

Send instruction signaling to activate the RRC connection to the macro base station, instructing the macro base station to establish the RRC connection;

Send an instruction signaling to the UE to listen to the physical downlink control channel command PDCCH order, instruct the UE to suspend the auxiliary SRB, and instruct the UE to listen to the PDCCH order of the macro base station, triggering the UE to initiate Non-contention random access process, so that the UE obtains uplink synchronization, Activating the use of the RRC connection to transmit RRC signaling with the macro base station.

19. The method according to claim 17, characterized in that: after receiving the instruction signaling to suspend the auxiliary SRB sent by the UE and suspending the auxiliary SRB according to the instruction signaling, further comprising: :

Send a dedicated RACH resource request message to the macro base station to obtain the dedicated RACH resources allocated by the macro base station to the UE, forward the dedicated RACH resources to the UE, and trigger the UE to process the dedicated RACH resources according to the dedicated RACH resources. Initiate a non-contention random access process to the macro base station, so that the UE obtains uplink synchronization, and activates the use of the RRC connection to transmit RRC signaling with the macro base station.

20. The method of claim 14, wherein suspending the auxiliary SRB includes:

Actively suspend the secondary SRB.

21. The method according to claim 20, characterized in that, after suspending the auxiliary SRB, further comprising:

Send an instruction signaling to suspend the auxiliary SRB to the UE, so that the UE performs a contention random access process to the macro base station;

Send instruction signaling for activating the RRC connection to the macro base station to instruct the macro base station to activate the RRC connection.

22. The method according to claim 20, characterized in that, after suspending the auxiliary SRB, further comprising: Send instruction signaling to activate the RRC connection to the macro base station, instructing the macro base station to activate the RRC connection;

Obtain the dedicated RACH resources allocated by the macro base station to the UE, forward the dedicated RACH resources to the UE, and trigger the UE to initiate a non-contention random access process to the macro base station according to the dedicated RACH resources. , so that the UE obtains uplink synchronization, and activates the use of the RRC connection to transmit RRC signaling with the macro base station.

23. The method according to any one of claims 11 to 22, characterized in that: receiving the instruction signaling sent by the macro base station to establish the auxiliary signaling radio bearer SRB, and establishing the auxiliary SRB with the user equipment UE. Previously, it also included:

Interact with the macro base station to determine the auxiliary SRB parameters for establishing the auxiliary SRB; or

Use the default parameters of the SRB or the auxiliary SRB as the auxiliary SRB parameters for establishing the auxiliary SRB.

24. The method according to claim 23, wherein the interaction with the macro base station to determine the auxiliary SRB parameters for establishing the auxiliary SRB includes:

Set the SRB parameters and send the SRB parameters to the macro base station;

or Receive the SRB parameters of the RRC connection sent by the macro base station and use them as the auxiliary SRB parameters. The RRC connection is established between the UE and the macro base station.

25. A cell communication method, characterized by including:

Establish a radio resource control RRC connection with the macro base station, and use the RRC connection to transmit RRC signaling with the macro base station;

Receive the instruction signaling to establish the auxiliary SRB sent by the macro base station, and establish the auxiliary SRB with the small cell base station;

Suspend the RRC connection, activate the auxiliary SRB, and use the auxiliary SRB to transmit RRC signaling with the small cell base station.

26. The method of claim 25, wherein suspending the RRC connection includes:

Receive the instruction signaling to suspend the RRC connection sent by the macro base station, and suspend the RRC connection according to the instruction signaling.

27. The method of claim 25, wherein suspending the RRC connection includes:

Measure the signal quality between the user equipment UE and the small cell base station;

When the signal quality between the UE and the small cell base station is higher than or equal to the first preset threshold, suspend the RRC connection and send an instruction signaling to suspend the RRC connection to the macro base station. .

28. The method according to any one of claims 25 to 27, further comprising: suspending the auxiliary SRB, activating the RRC connection, and using the RRC connection to transmit RRC signals with the macro base station. make.

29. The method according to claim 28, characterized in that: suspending the auxiliary SRB, include:

Receive an instruction signaling to suspend the auxiliary SRB sent by the small cell base station, and suspend the auxiliary SRB according to the instruction signaling.

30. The method according to claim 28, characterized in that before suspending the auxiliary SRB, the method includes:

Measure the signal of the small cell base station and the signal of the macro base station;

The pending secondary SRB, includes:

When the signal quality between the UE and the small cell base station is lower than the first preset threshold, or when the signal quality between the UE and the macro base station is lower than the second preset threshold, suspend all The auxiliary SRB; sending instruction signaling to suspend the auxiliary SRB to the small cell base station, instructing the small cell base station to suspend the auxiliary SRB;

The activating the RRC connection and using the RRC connection to transmit RRC signaling with the macro base station includes:

Perform a contention random access process to the macro base station, send an instruction message to activate the RRC connection to the macro base station, instruct the macro base station to activate the RRC connection, and use the RRC connection of the macro base station to transmit the RRC signaling of the UE, wherein the indication message is included in message 3 of the contention random access procedure.

31. The method of claim 28, wherein suspending the auxiliary SRB includes:

Receive the instruction signaling sent by the small cell base station to suspend the auxiliary SRB, and suspend the auxiliary SRB according to the instruction signaling;

Activating the RRC connection, using the RRC connection to transmit RRC signals with the macro base station orders, including:

Receive the instruction signaling sent by the small cell base station to listen to the physical downlink control channel command PDCCH order of the macro base station, listen to the PDCCH order, initiate a non-contention random access process to the macro base station, and obtain the uplink Synchronize and activate the use of the RRC connection to transmit RRC signaling with the macro base station;

or

Receive the dedicated RACH resources forwarded by the small cell base station, initiate a non-contention random access process to the macro base station according to the dedicated RACH resources, obtain uplink synchronization, and activate the use of the RRC connection to transmit RRC signals with the macro base station. Let, where, the dedicated RACH resource is allocated by the macro base station to the UE.

32. The method according to any one of claims 25 to 31, wherein the receiving the instruction signaling to establish the auxiliary SRB sent by the macro base station, before establishing the auxiliary SRB with the small cell base station, further includes:

Determine auxiliary SRB parameters, and the auxiliary SRB parameters are used to establish the auxiliary SRB.

33. The method according to claim 32, characterized in that determining the auxiliary SRB parameters includes:

Receive the auxiliary SRB parameters sent by the macro base station;

or

Obtain the default parameters of the SRB or auxiliary SRB as the auxiliary SRB parameters.

34. The method according to claim 27 or 30, further comprising:

Obtain the first preset threshold and the second preset threshold configured by the macro base station.

35. A macro base station, characterized by including: A processor, configured to establish a radio resource control RRC connection with the user equipment UE, and transmit RRC signaling with the UE through the RRC connection;

A transmitter configured to send instruction signaling for establishing an auxiliary signaling radio bearer SRB to the UE and the small cell base station respectively to instruct the UE and the small cell base station to establish the auxiliary SRB, and the auxiliary SRB Used for transmitting RRC signaling between the UE and the small cell base station.

36. The macro base station according to claim 35, characterized in that,

The processor is also configured to actively suspend the RRC connection after the transmitter sends instruction signaling to establish the auxiliary SRB to the UE and the small cell base station respectively;

The transmitter is also configured to send an indication signaling to suspend the RRC connection to the UE, instructing the UE to suspend the RRC connection; and

37. The macro base station according to claim 35, further comprising:

A receiver configured to receive the instruction signaling to suspend the RRC connection sent by the UE after the transmitter sends the instruction signaling to establish the auxiliary SRB to the UE and the small cell base station respectively; The processor is also configured to suspend the RRC connection according to the indication signaling received by the receiver;

The transmitter is also configured to send instruction signaling for activating the auxiliary SRB to the small cell base station to instruct the small cell base station to activate the auxiliary SRB, so that the small cell base station uses the auxiliary SRB and the auxiliary SRB. The UE transmits RRC signaling.

38. The macro base station according to claim 36 or 37, wherein the processor is further configured to reactivate the RRC connection, so that the macro base station uses the RRC connection to communicate with the UE. Input RRC signaling.

39. The macro base station according to claim 38, characterized in that,

The processor is specifically configured to actively reactivate the RRC connection;

The transmitter is configured to send instruction signaling to suspend the auxiliary SRB to the small cell base station, instructing the small cell base station to suspend the auxiliary SRB, so that the UE uses the RRC connection to transmit RRC signaling. .

40. The macro base station according to claim 38, characterized in that,

The receiver is configured to receive an instruction signaling for activating the RRC connection sent by the small cell base station;

The processor is configured to reactivate the RRC connection according to the indication signaling received by the receiver.

41. The macro base station according to claim 39 or 40, characterized in that,

The processor is also configured to allocate dedicated random access channel RACH resources to the UE, instruct the transmitter to send a physical downlink control channel command PDCCH order to the UE, and trigger the UE to use the RACH resources to send messages to the macro base station Initiate a non-contention random access process so that the UE obtains uplink synchronization and reactivates the use of the RRC connection to transmit RRC signaling;

or

The processor is also configured to allocate dedicated RACH resources to the UE, forward the dedicated RACH resources to the UE through the small cell base station, and trigger the UE to use the RACH resources to initiate non-competition to the macro base station. The random access process enables the UE to obtain uplink synchronization and re-activate the use of the RRC connection to transmit RRC signaling.

42. The macro base station according to claim 38, characterized in that, The receiver is configured to receive an instruction message for activating the RRC connection sent by the UE, where the instruction message is included in message 3 of the contention random access process;

The processor is also configured to process the contention random access process initiated by the UE according to the instruction message received by the receiver, and reactivate the RRC connection.

43. The macro base station according to any one of claims 35-42, characterized in that,

The processor is further configured to interact with the small cell base station, determine auxiliary SRB parameters, and instruct the transmitter to send the auxiliary SRB parameters to the UE, so that the UE and the small cell base station can The auxiliary SRB parameters establish the auxiliary SRB;

or

The processor is further configured to instruct the UE and the small cell base station to establish the auxiliary SRB using default parameters of the SRB or the auxiliary SRB.

44. The macro base station according to claim 43, characterized in that,

The transmitter is used to send the SRB parameters of the RRC connection to the small cell base station as the auxiliary SRB parameters;

or

The receiver is configured to receive auxiliary SRB parameters sent by the small cell base station.

45. A small cell base station, characterized by including:

A receiver, configured to receive an instruction signaling sent by the macro base station to establish an auxiliary signaling radio bearer SRB; A processor, configured to establish an auxiliary SRB with the user equipment UE according to the instruction signaling received by the receiver; as well as

The auxiliary SRB is activated, so that the small cell base station uses the auxiliary SRB to transmit RRC signaling with the UE.

46. The small cell base station according to claim 45, characterized in that,

The receiver is configured to receive an instruction signaling to activate the auxiliary SRB sent by the macro base station; the processor is configured to activate the auxiliary SRB according to the instruction signaling received by the receiver; or

The receiver is configured to receive instruction signaling sent by the UE to activate the auxiliary SRB; and the processor is configured to activate the auxiliary SRB according to the instruction signaling received by the receiver.

47. The small cell base station according to claim 45 or 46, further comprising: a transmitter, configured to transmit the RRC signaling to the UE after the small cell base station uses the auxiliary SRB. The RRC signaling related to the macro base station sent by the UE is forwarded to the macro base station.

48. The small cell base station according to any one of claims 45 to 47, wherein the processor is further configured to: after the small cell base station uses the auxiliary SRB to transmit RRC signaling with the UE , suspend the auxiliary SRB, so that the UE uses a radio resource control RRC connection to transmit RRC signaling with the macro base station, and the RRC connection is established between the UE and the macro base station.

49. The small cell base station according to claim 48, characterized in that,

The receiver is configured to receive an instruction signaling to suspend the auxiliary SRB sent by the macro base station; and the processor is configured to suspend the auxiliary SRB according to the instruction signaling received by the receiver.

50. The small cell base station according to claim 49, characterized in that,

The transmitter is configured to, after the processor suspends the auxiliary SRB, send instruction signaling to the UE to suspend the auxiliary SRB and listen to the physical downlink control channel command PDCCH order, instructing the UE to suspend The auxiliary SRB and the PDCCH order instructing the UE to listen to the macro base station trigger the UE to initiate a non-contention random access process so that the UE obtains uplink synchronization and activates the use of the RRC connection with all The macro base station transmits RRC signaling; or

The transmitter is also configured to, after the processor suspends the auxiliary SRB, forward the obtained dedicated random access channel RACH resource allocated by the macro base station to the UE to the UE, triggering the UE Initiate a non-contention random access process to the macro base station according to the dedicated RACH resource, so that the UE obtains uplink synchronization, and activates the use of the RRC connection to transmit RRC signaling with the macro base station.

51. The small cell base station according to claim 48, characterized in that,

The receiver is configured to receive an instruction signaling to suspend the auxiliary SRB sent by the UE; and the processor is configured to suspend the auxiliary SRB according to the instruction signaling received by the receiver.

52. The small cell base station according to claim 51, characterized in that,

The transmitter is configured to send instruction signaling for activating the RRC connection to the macro base station after the processor suspends the auxiliary SRB, instructing the macro base station to establish the RRC connection; and to the UE Send instruction signaling to listen to the physical downlink control channel command PDCCH order, instruct the UE to suspend the auxiliary SRB, and instruct the UE to listen to the PDCCH order of the macro base station, triggering the UE to initiate non-contention randomization The access process is such that the UE obtains uplink synchronization and activates the use of the RRC connection to transmit RRC signaling with the macro base station.

53. The small cell base station according to claim 51, characterized in that,

The transmitter is also configured to send instruction signaling to activate the RRC connection to the macro base station after the processor suspends the auxiliary SRB, instructing the macro base station to establish the RRC connection; and

Send a dedicated RACH resource request message to the macro base station to obtain the dedicated RACH resources allocated by the macro base station for the UE, forward the dedicated RACH resources to the UE, and trigger the The UE initiates a non-contention random access process to the macro base station according to the dedicated RACH resource, so that the UE obtains uplink synchronization and activates the use of the RRC connection to transmit RRC signaling with the macro base station.

54. The small cell base station according to claim 48, characterized in that,

The processor is configured to actively suspend the secondary SRB.

55. The small cell base station according to claim 54, characterized in that,

After the processor suspends the auxiliary SRB, the transmitter sends an instruction signaling to suspend the auxiliary SRB to the UE, so that the UE performs a contention random access process to the macro base station. ; as well as

56. The small cell base station according to claim 54, characterized in that,

The transmitter is configured to send instruction signaling for activating the RRC connection to the macro base station after the processor suspends the auxiliary SRB, instructing the macro base station to activate the RRC connection; and to the UE Send instruction signaling to suspend the auxiliary SRB and listen to the physical downlink control channel command PDCCH order, instruct the UE to suspend the auxiliary SRB, and instruct the UE to listen to the PDCCH order of the macro base station, triggering all The UE initiates a non-contention random access process, so that the UE obtains uplink synchronization and activates the use of the RRC connection to transmit RRC signaling with the macro base station; or

The transmitter is also configured to forward the obtained dedicated RACH resources allocated by the macro base station to the UE to the UE, triggering the UE to initiate a non-contention random access to the macro base station according to the dedicated RACH resources. Enter the process so that the UE obtains uplink synchronization and activates the use of the RRC connection Transmit RRC signaling with the macro base station.

57. The small cell base station according to any one of claims 45 to 56, wherein the processor is further configured to interact with the macro base station to determine auxiliary SRB parameters for establishing the auxiliary SRB;

or

The processor uses the default parameters of the SRB or the auxiliary SRB as auxiliary SRB parameters for establishing the auxiliary SRB.

58. The small cell base station according to claim 57, characterized in that,

The processor is used to set the SRB parameters, and the transmitter is used to send the SRB parameters set by the processor to the macro base station;

or

The receiver is configured to receive the SRB parameters of the RRC connection sent by the macro base station, and the processor is configured to use the SRB parameters received by the receiver as the auxiliary SRB parameters. The RRC connection is established between the UE and between the macro base stations.

59. A user equipment UE, characterized by: including:

A processor, configured to establish a radio resource control RRC connection with the macro base station, so that the UE uses the RRC connection to transmit RRC signaling with the macro base station;

A receiver configured to receive an instruction signaling sent by the macro base station to establish an auxiliary SRB, so that the processor establishes an auxiliary SRB with the small cell base station according to the instruction signaling received by the receiver; the processor It is also used to suspend the RRC connection and activate the auxiliary SRB, so that the

The UE uses the auxiliary SRB to transmit RRC signaling with the small cell base station.

60. The user equipment according to claim 59, characterized in that, The receiver is configured to receive an instruction signaling to suspend the RRC connection sent by the macro base station; and the processor is configured to suspend the RRC connection according to the instruction signaling received by the receiver.

61. The user equipment according to claim 59, characterized in that,

The processor is configured to measure the signal quality between the UE and the small cell base station; when the signal quality between the UE and the small cell base station is higher than or equal to a first preset threshold, hang up Start the RRC connection;

The user equipment also includes:

A transmitter, configured to send an indication signaling for suspending the RRC connection to the macro base station after the processor suspends the RRC connection.

62. The user equipment according to any one of claims 59-61, characterized in that the processor is also configured to suspend the auxiliary SRB and activate the RRC connection, so that the UE uses the The RRC connection transmits RRC signaling with the macro base station.

63. The user equipment according to claim 62, characterized in that,

The receiver is configured to receive an instruction signaling to suspend the auxiliary SRB sent by the small cell base station;

The processor is configured to suspend the secondary SRB according to indication signaling received by the receiver.

64. The user equipment according to claim 62, characterized in that,

The processor is configured to measure the signal of the small cell base station and the signal of the macro base station; when the signal quality between the UE and the small cell base station is lower than a first preset threshold, or when the When the signal quality between the UE and the macro base station is lower than a second preset threshold, the auxiliary SRB is suspended; the transmitter is used to send an instruction signaling to suspend the auxiliary SRB to the small cell base station. , instruct the small cell base station to suspend the auxiliary SRB; The processor is configured to perform a contention random access process to the macro base station, send an instruction message to activate the RRC connection to the macro base station, instruct the macro base station to activate the RRC connection, and use the macro base station to activate the RRC connection. The RRC connection transmits the RRC signaling of the UE, where the indication message is included in message 3 of the contention random access process.

65. The user equipment according to claim 61, characterized in that,

The receiver is configured to receive a signaling message sent by the small cell base station to suspend the auxiliary SRB, and the processor is configured to suspend the auxiliary SRB according to the signaling message received by the receiver; the processing The receiver is configured to listen to the PDCCH order after the receiver receives the instruction signaling sent by the small cell base station to listen to the physical downlink control channel order PDCCH order of the macro base station, and initiate a non-operation to the macro base station. Compete for the random access process, obtain uplink synchronization, and activate the use of the RRC connection to transmit RRC signaling with the macro base station;

or

The processor is configured to, after the receiver receives the dedicated RACH resources forwarded by the small cell base station, initiate a non-contention random access process to the macro base station according to the dedicated RACH resources, obtain uplink synchronization, and activate use. The RRC connection transmits RRC signaling with the macro base station, wherein the dedicated RACH resources are allocated by the macro base station to the UE.

66. The user equipment according to any one of claims 59-65, characterized in that the processor is used to determine auxiliary SRB parameters, and the auxiliary SRB parameters are used to establish the auxiliary SRB.

67. The user equipment according to claim 66, characterized in that,

The processor is configured to receive auxiliary SRB parameters sent by the macro base station;

or The processor is configured to use the default parameters of the SRB or the auxiliary SRB as the auxiliary SRB parameters.

68. The user equipment according to claim 61 or 64, characterized in that,

The receiver is further configured to obtain the first preset threshold and the second preset threshold configured by the macro base station.

69. A cell communication system, characterized in that it includes the macro base station according to any one of claims 35-44, the small cell base station according to any one of claims 45-58, and the macro base station according to any one of claims 45-58, and claims 59- User equipment described in any one of 68.