CN105282794A - Base station configuration and cell selection/switching method, device and system and associated equipment - Google Patents

Abstract

The invention discloses a base station configuration and cell selection/switching method, device, system and related equipment, which are used to avoid affecting battery life or network performance due to frequent cell selection/switching operations during UE movement. Wherein, the base station configuration method includes: judging whether the pico cell covered by the pico base station satisfies a preset cell coverage condition, and the preset cell coverage condition includes: the pico cell is completely covered by a macro cell covered by a deployed macro base station Coverage; or the pico cell is completely covered by at least one pico cell covered by other pico base stations whose PBCH is not shielded; if so, configure the physical broadcast channel PBCH of the pico base station to be in a PBCH shielded state.

Description

Base station configuration and cell selection/handover method, device, system and related equipment

technical field

The present invention relates to the technical field of mobile communication, in particular to a base station configuration and cell selection/handover method, device, system and related equipment.

Background technique

An LTE-A (Long Time Evolution Advanced, enhanced long-term evolution) network cellular system generally implements heterogeneous deployment of a set of enhanced base stations (eNBs) to reduce cell scale and improve spectral efficiency. To improve coverage and user equipment (UE) throughput in heterogeneous networks, macro eNBs can be deployed with high transmit power and pico eNBs within the coverage area can be deployed with relatively low transmit power. This overlapping coverage deployment can increase capacity gains by enhancing space division multiplexing of spectrum.

After the user equipment (UE) within the coverage area of the LTE-A network is powered on, the UE first performs a cell selection process, and through the cell selection process, the UE searches for a suitable cell association. During the cell selection process, the UE measures the reference signal strength (e.g. RSRP/RSRQ ((ReferenceSignalReceivingPower/ReferenceSignalReceivingQuality, Reference Signal Received Power/Reference Signal Received Quality)) of each neighboring cell and uses certain criteria such as the one with the highest RSRP value The cell is selected based on the cell. After the cell is selected, the UE verifies the accessibility of the cell by reading the MIB (MasterInformationBlock, Master Information Block) carried on the PBCH (PhysicalBroadcastChannel). After the UE successfully verifies the selected The accessibility of the cell will then associate itself to the selected cell. If the UE fails to read the MIB of the selected cell, the UE will discard the selected cell and repeat the above steps until the UE finds a suitable cell that can be associated.

After the UE associates to a cell its state changes to RRC_IDLE. When the UE moves into a new area, the UE in the RRC_IDLE state may perform the above cell selection/reselection steps to associate itself to another cell. If a large number of pico cells are deployed in the area, the UE in the RRC_IDLE state will perform frequent cell selection/reselection while moving, which will reduce battery life.

When a UE sends or receives a packet, its state becomes RRC_CONNECTED. The eNB can handover the UE in RRC_CONNECTED to another eNB based on the RSRP/RSRQ measurement information reported by the UE. Similar to the case of RRC_IDLE, if a large number of pico cells are deployed in the area, frequent handovers may occur, thereby increasing the probability of call drop, thereby reducing network performance.

Contents of the invention

Embodiments of the present invention provide a base station configuration and cell selection/handover method, device, system, and related equipment, so as to avoid affecting battery life or network performance due to frequent execution of cell selection/handover operations during UE mobility.

An embodiment of the present invention provides a base station configuration method, including:

Judging whether the pico cell covered by the pico base station satisfies a preset cell coverage condition, the preset cell coverage condition includes: the pico cell is completely covered by the macro cell covered by the deployed macro base station; or the pico cell is covered by at least A PBCH is completely covered by pico cells covered by other pico base stations;

If so, configure the physical broadcast channel PBCH of the pico base station to be in a PBCH shielded state.

After configuring the PBCH of the pico base station to be in the PBCH shielded state, it also includes:

Informing neighboring base stations of the cell identity and master information block information of the pico cell.

Configuring the physical broadcast channel PBCH of the pico base station to be in a PBCH shielded state, specifically includes:

Set the resource position occupied by the PBCH as empty.

An embodiment of the present invention provides a cell selection/handover method, including:

The source base station receives the reference signal strengths of the source base station and each adjacent base station of the source base station reported by the terminal;

If the received reference signal strength satisfies a preset handover condition, determine a target base station to be handed over to for the terminal, where the handover condition includes that the reference signal strength of the source base station is lower than a first signal strength threshold, the The reference signal strength of the target base station is higher than a second signal strength threshold;

Sending a cell switching instruction to the terminal, if the PBCH of the target base station is blocked, the cell switching instruction carries the cell identity and MIB of the target base station, wherein the MIB is pre-stored by the source base station.

The embodiment of the present invention provides another cell selection/selection method, if the terminal is in the connected state and moves, including:

The terminal measures the reference signal strength of the source base station and each adjacent base station of the source base station and reports to the source base station;

receiving a cell handover instruction sent by the source base station when the handover condition is met, and if the PBCH of the target base station is shielded, the cell handover instruction carries the cell identity and MIB of the target base station, wherein the MIB is the source base station Pre-stored, the handover condition includes that the reference signal strength of the source base station is lower than a first signal strength threshold, and the reference signal strength of the target base station is higher than a second signal strength threshold;

Handover to the target base station according to the cell identity and MIB.

An embodiment of the present invention provides a base station configuration device, including:

A judging unit, configured to judge whether a pico cell covered by a pico base station satisfies a preset cell coverage condition, and the preset cell coverage condition includes: the pico cell is completely covered by a macro cell covered by a deployed macro base station; or The pico cell is completely covered by at least one pico cell covered by other pico base stations whose PBCH is not shielded;

The configuration unit is configured to configure the physical broadcast channel PBCH of the pico base station to be in a PBCH masked state when the judgment result of the judging unit is yes.

The device also includes:

A notification unit, configured to notify neighboring base stations of the cell identity and master information block information of the pico cell after the configuration unit configures the PBCH of the pico base station to be in a PBCH shielded state.

The configuration unit is configured to set the resource position occupied by the PBCH as empty.

An embodiment of the present invention provides a base station, where the base station is a source base station, including:

a receiving unit, configured to receive the reference signal strengths of the source base station and the neighboring base stations of the source base station reported by the terminal;

a switching unit, configured to determine a target base station to be switched to for the terminal when the strength of the received reference signal received by the receiving unit satisfies a preset switching condition, and the switching condition includes the reference signal of the source base station The signal strength is lower than a first signal strength threshold, and the reference signal strength of the target base station is higher than a second signal strength threshold;

a sending unit, configured to send a cell switching instruction to the terminal, if the PBCH of the target base station is shielded, the cell switching instruction carries the cell identity and MIB of the target base station, wherein the MIB is the source Pre-stored by the base station.

An embodiment of the present invention provides a terminal, including:

a measuring unit, configured to measure the reference signal strength of the source base station and each adjacent base station of the source base station and report to the source base station when the terminal is in the connected state and moves;

a receiving unit, configured to receive a cell switching instruction sent by the source base station when the switching condition is met; if the PBCH of the target base station is shielded, the cell switching instruction carries the cell identity and MIB of the target base station, wherein the MIB pre-stored for the source base station;

A cell selection/handover unit, configured to handover to the target base station according to the cell identity and MIB carried in the cell handover instruction received by the receiving unit.

An embodiment of the present invention provides a cell selection/handover system, including the above-mentioned base station and terminal.

The base station configuration and cell selection/handover method, device, system, and related equipment provided by the embodiments of the present invention, when deploying a pico base station, if the pico cell covered by the pico base station meets the preset cell coverage conditions, configure the pico base station PBCH is the PBCH shielding state. In this way, the UE that is performing cell selection/handover can be prevented from accessing the pico base station because it cannot read the MIB of the femto base station, thereby avoiding frequent execution of cell selection/handover when the UE moves in a densely deployed environment, In turn, battery life and network performance of the UE are reduced.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute improper limitations to the present invention. In the attached picture:

FIG. 1 is a schematic diagram of an implementation flow of a base station configuration method in an embodiment of the present invention;

FIG. 2 is a schematic diagram of PBCH configuration in an embodiment of the present invention;

FIG. 3 is a schematic diagram of an implementation flow of a cell selection method implemented by a terminal in an embodiment of the present invention;

FIG. 4 is a schematic diagram of an implementation process of a method for performing cell handover by a terminal in an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a base station configuration device in an embodiment of the present invention;

FIG. 6 is a schematic diagram of an implementation flow of a method for implementing a cell handover by a base station in an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a terminal in an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a base station in an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a cell selection/handover system in an embodiment of the present invention.

detailed description

In order to solve the problem that in a heterogeneous network, due to the dense deployment of base stations, UEs in the coverage area frequently perform frequent selection/handover operations, thereby affecting the battery life of UEs and network performance, an embodiment of the present invention provides a base station configuration method and cell selection/handover methods.

The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention, and in the absence of conflict, the present invention The embodiments and the features in the embodiments can be combined with each other.

The embodiment of the present invention is applicable to a network environment where base stations are densely deployed, such as an LTE-A heterogeneous network. In order to improve cell capacity and UE throughput, multiple pico base stations are deployed within the coverage of a macro cell and are only used for Downlink data transmission, or deploy multiple pico base stations outside the coverage of macro cells, and some pico cells covered by pico base stations are completely covered by pico cells covered by other pico base stations, where the pico base stations are only used for downlink data transmission .

Since the UE accesses the base station according to the MIB carried in the PBCH, if the UE cannot read the MIB in the PBCH, it will give up the selected base station. Based on this, the embodiment of the present invention provides a base station configuration method, as shown in FIG. 1 , It is a schematic diagram of the implementation flow of the base station configuration method provided by the embodiment of the present invention, which may include the following steps:

S11. Determine whether the pico cell covered by the pico base station satisfies a preset cell coverage condition, if yes, execute step S12, and if no, execute step S13.

S12. Configure the PBCH of the pico base station to be in a PBCH shielded state.

S13. Perform configuration according to an existing base station configuration method.

Preferably, the preset cell coverage conditions may include: the pico cell covered by the pico base station is completely covered by the macro cell covered by the deployed macro base station; or the pico cell is covered by multiple other pico base stations whose PBCH is not shielded The area is fully covered.

During specific implementation, when installing a pico base station, the network operator in the pico base station first checks whether the pico cell formed by the pico base station is completely covered by the macro cell covered by the macro base station, and if so, the network operator configures the PBCH of the pico base station as shielding state, if no, further judge whether the pico cell formed by the pico base station is completely covered by pico cells formed by other pico base stations that are not shielded by other PBCHs around, if yes, the network operator configures the PBCH of the pico base station as Shielded state, if not, configure according to the existing base station configuration method without any special processing.

It should be understood that during specific implementation, it is also possible to first check whether the pico cell formed by the pico base station is completely covered by pico cells formed by other surrounding pico base stations whose PBCHs are not shielded, and if so, the network operator configures the PBCH of the pico base station If not, then check whether the pico cell formed by the pico base station is completely covered by the macro cell covered by the macro base station, if yes, the network operator configures the PBCH of the pico base station as a shielded state, if not, then follow the existing The base station configuration method is used for configuration without any special processing.

That is to say, in actual implementation, when judging whether the pico cell formed by the pico base station satisfies the above two preset cell coverage conditions, there is no sequence restriction, and whether it satisfies any of them can be judged first.

It should be noted that in the embodiment of the present invention, the macro base station is configured according to the existing base station configuration method, that is, the PBCH of the macro base station will not be shielded.

Preferably, during specific implementation, the PBCH of the pico base station can be configured in the PBCH shielded state according to the following method: setting the resource position occupied by the PBCH of the pico base station as empty. As shown in Figure 2, it is a schematic diagram of the frame structure of the PBCH configuration in the embodiment of the present invention, and the LTE frame is taken as an example for illustration. Each LTE frame includes 10 subframes, and each subframe is divided into 14 OFDM (Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexing) mark and normal cyclic prefix. The central six PRBs (PhysicalResourceBlock, Physical Resource Block) of the 8th OFDM mark in the first subframe of each LTE frame are used as PBCHs for carrying MIB information. If the UE cannot read the MIB of the cell, the UE cannot verify the accessibility of the cell and cannot connect to the cell. Therefore, by shielding the PBCH, the cell can be made inaccessible to the UE, such as but not limited to PBCH is set to empty.

During specific implementation, if the PBCH is configured to be shielded during the deployment process of the pico base station, the pico base station will notify the adjacent base station of the cell ID and MIB information of the pico cell covered by it in the way of backhaul, and receive the cell ID and MIB information The base station stores the received information.

During specific implementation, it is also possible to determine whether to configure the PBCH to be in the masked state when the femto base station meets other preset conditions or according to user settings. If it is determined that the PBCH needs to be configured in the masked state, it can be configured according to the above process, which will not be repeated here.

Based on the base station configuration method provided above, an embodiment of the present invention provides a cell selection/handover method, as shown in FIG. 3 , which may include the following steps:

S31. The UE measures the reference signal strength of each searched base station;

S32. Select a base station with the best reference signal strength and capable of reading the MIB for association.

It is assumed that a certain pico base station satisfies the preset cell coverage condition, so that the PBCH is configured as a shielded state. Taking UE power-on to perform cell selection as an example, assuming that the reference signal strength (RSRP or RSRQ) of the macro base station and the pico base station are 5 and 10 respectively, and the cell selection condition is set such that the UE selects the base station with the best reference signal strength as the optimal candidate base station. In this way, since the reference signal strength of the pico base station is higher than that of the macro base station, the UE selects the pico base station as the best candidate base station and reads the MIB information of the pico base station. The MIB information of the base station, therefore, the UE discards the pico base station and selects the macro base station as the best candidate base station, reads the MIB information carried by the PBCH of the macro base station, and sends an attach to the selected macro base station through RACH (RandAccessChannel, random access channel) Request to associate with the macro base station. In this way, for the pico base station within the coverage of the macro base station, since the PBCH is configured as a shielded state, all UEs in the idle state will choose to associate with the macro base station.

During specific implementation, if the UE sends movement, the UE in the idle state will perform a cell reselection operation, and the UE in the connected state will perform a cell handover operation.

In the embodiment of the present invention, for a UE in an idle state, it can perform cell reselection according to the following steps:

Step 1: Receive the PSS (Primary Synchronization Signal)/SSS (Secondary Synchronization Signal) sent by the associated base station and each searched base station.

Step 2: Complete cell synchronization according to the received PSS/SSS.

Step 3: Measure the reference signal strength of the associated base station and each searched base station.

Step 4: Select the base station with the best reference signal strength and capable of reading the MIB for association.

Continuing the above example, since the UE is associated with the macro base station, when the UE moves in the macro cell, since the pico base station in the macro cell is set to the PBCH shielding state, in this way, as long as it is within the coverage of the macro cell, the UE will not perform cell Reselection, so as to avoid the UE being in an idle state and frequent cell reselection operations during the moving process and reducing the battery life of the UE.

During specific implementation, for the UE in the connected state, the cell handover can be performed according to the steps shown in Figure 4:

S41. The UE measures the reference signal strength of the associated base station (source base station) and each neighboring base station of the source base station, and reports it to the source base station;

Still taking the above example as an example, the UE is associated with the macro base station. When the UE moves during data transmission with the macro base station, the UE can measure the reference signal strength of the macro base station and each neighboring base station of the macro base station, and report it to the macro base station.

S42. The UE receives the cell handover indication sent by the source base station when the handover condition is met. If the PBCH of the target base station is blocked, the cell handover indication carries the cell identity and MIB of the target base station, wherein the MIB is pre-stored by the associated base station.

Wherein, the handover condition may be set as that the reference signal strength of the source base station is lower than a first signal strength threshold, and the reference signal strength of the target base station is higher than a second signal strength threshold.

In the above example, when the pico base station is deployed, if the pico base station is configured in the PBCH shielding state, it will notify the macro base station of the cell identity and MIB information of its covered cell, and the macro base station will store the received information.

In this way, when the UE moves in the connected state, the UE measures the reference signal strength of the macro base station and the pico base station respectively, and reports the measurement results to the macro base station, and the macro base station judges whether to It is necessary to perform cell switching. If it is judged that cell switching is required, a switching request will be sent to the selected target base station, and at the same time, the data packets to be sent to the UE and on the way will be cached. The target base station will confirm whether it is allowed according to its own network load, etc. UE handover, if allowed, will send a handover request confirmation to the macro base station, and the macro base station will forward to the target base station the buffered data packets that will be sent to the UE and are being sent, and send a cell handover instruction to the UE. If the target base station configures PBCH as shielding state, since the UE cannot read the MIB information of the target base station, the macro base station also needs to carry the cell identity of the target base station and the MIB information of the target base station stored by itself in the cell handover instruction. In specific implementation, the macro base station can pass the RRC signal Send a cell handover instruction. After receiving the cell handover instruction sent by the macro base station, the UE performs cell detection according to the MIB information in it to read other system information, and sends an attach request to the target base station through RACH. Finally, the target base station confirms the attachment and starts sending a message to the UE. The data packet of the UE sent by the macro base station.

S43. The UE switches to the target base station according to the cell identity and MIB carried in the cell switching instruction.

It should be noted here that if the determined target base station is in the PBCH shielding state and the associated base station does not store the MIB information of the determined target base station, the UE will not switch to the determined target base station, that is to say, the present invention In the embodiment, after PBCH shielding is performed, the UE can only perform handover according to the MIB information carried in the handover instruction sent by the associated base station. If the handover instruction does not carry MIB information and the target base station is in the PBCH shielding state, the UE cannot Handover is performed, so as to reduce the number of cell handover operations performed by the UE in the mobile process in the connected state.

Based on the same inventive concept, embodiments of the present invention also provide a base station configuration device, a method and device for implementing cell selection/handover on the network side, and a cell selection/switching device, system, and related equipment implemented by the terminal side. The principles of the system and equipment to solve problems are similar to the base station configuration method and the cell selection/handover method, so the implementation of the above-mentioned devices, systems and equipment can be referred to the implementation of the method, and the repetition will not be repeated.

As shown in FIG. 5, it is a schematic structural diagram of a base station configuration device provided by an embodiment of the present invention, including:

The judging unit 51 is configured to judge whether the pico cell covered by the pico base station satisfies a preset cell coverage condition.

Wherein, the preset cell coverage conditions include: the pico cell is completely covered by a macro cell covered by a deployed macro base station; or the pico cell is completely covered by a pico cell covered by at least one other pico base station whose PBCH is not shielded.

The configuring unit 52 is configured to configure the PBCH of the pico base station to be in a PBCH masked state when the judging result of the judging unit 51 is yes.

During specific implementation, the base station configuration apparatus may further include a communication unit, configured to notify neighboring base stations of the cell identity and master information block information of the pico cell.

Wherein, the configuration unit 52 may be configured to set the resource position occupied by the PBCH as empty.

As shown in FIG. 6, it is a schematic diagram of the implementation flow of the method for implementing cell handover by the base station provided by the embodiment of the present invention, including:

S61. The source base station receives reference signal strengths of the source base station and each neighboring base station of the source base station reported by the terminal.

S62. If the received reference signal strength satisfies a preset handover condition, determine a target base station to be handed over to for the terminal.

Wherein, the handover condition includes that the reference signal strength of the source base station is lower than a first signal strength threshold, and the reference signal strength of the target base station is higher than a second signal strength threshold.

S63. Send a cell switching instruction to the terminal.

During specific implementation, if the PBCH of the target base station is blocked, the cell handover instruction carries the cell identity and MIB of the target base station, wherein the MIB is pre-stored by the source base station.

As shown in FIG. 7, a schematic structural diagram of a terminal provided in an embodiment of the present invention may include:

A measuring unit 71, configured to measure the reference signal strength of each base station found;

The cell selection/switching unit 72 is configured to select a base station with the best reference signal strength and capable of reading the MIB for association.

During specific implementation, the cell selection/switching device may also include a receiving unit 73 and a synchronizing unit 74, wherein:

The receiving unit 73 can be used to receive the PSS/SSS sent by the associated base station and each searched base station when it is in an idle state and moves;

A synchronization unit 74, configured to complete cell synchronization according to the received PSS and SSS;

The measuring unit 71 can also be used to measure the reference signal strength of the associated base station and each searched base station;

The cell selection/switching unit 72 is also configured to select a base station with the best reference signal strength and capable of reading the MIB for association.

During specific implementation, the measuring unit 71 may be configured to measure the reference signal strengths of the source base station and each neighboring base station of the source base station and report to the source base station when the terminal is in the connected state and moves.

The receiving unit 73 may also be configured to receive a cell switching instruction sent by the source base station when the switching condition is met, if the PBCH of the target base station is shielded, the cell switching instruction carries the cell identity and MIB of the target base station, wherein the The MIB is pre-stored by the source base station.

The cell selection/handover unit 72 may be configured to handover to the target base station according to the cell identifier and MIB carried in the cell handover instruction received by the receiving unit 73 .

As shown in FIG. 8, a schematic structural diagram of a source base station currently accessed by a terminal provided in an embodiment of the present invention may include:

The receiving unit 81 is configured to receive the reference signal strength of the source base station and the neighboring base stations of the source base station reported by the terminal;

The switching unit 82 is configured to determine a target base station to be switched to for the terminal when the strength of the reference signal received by the receiving unit 81 satisfies a preset switching condition.

Wherein, the handover condition includes that the reference signal strength of the source base station is lower than a first signal strength threshold, and the reference signal strength of the target base station is higher than a second signal strength threshold.

A sending unit 83, configured to send a cell switching instruction to the terminal.

Wherein, if the PBCH of the target base station is blocked, the cell handover instruction carries the cell identity and MIB of the target base station, wherein the MIB is pre-stored by the source base station.

For the convenience of description, the above parts are divided into modules (or units) according to their functions and described separately. Certainly, when implementing the present invention, the functions of each module (or unit) can be implemented in one or more pieces of software or hardware.

As shown in FIG. 9 , it is a schematic structural diagram of a cell selection/handover system provided by an embodiment of the present invention, including the above-mentioned base station and the above-mentioned terminal.

The base station configuration and cell selection/handover method, device, system, and related equipment provided by the embodiments of the present invention, when deploying a pico base station, if the pico cell covered by the pico base station meets the preset cell coverage conditions, configure the pico base station PBCH is the PBCH shielding state. In this way, the UE that is performing cell selection/handover can be prevented from accessing the femto base station, thereby avoiding frequent execution of cell selection/handover when the UE moves in a cheat deployment environment, thereby reducing the battery life of the UE and network performance.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

While preferred embodiments of the present invention have been described, additional changes and modifications can be made to these embodiments by those skilled in the art once the basic inventive concept is appreciated. Therefore, it is intended that the appended claims be construed to cover the preferred embodiment as well as all changes and modifications which fall within the scope of the invention.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies thereof, the present invention also intends to include these modifications and variations.

Claims (11)

1. A base station configuration method, characterized in that, comprising: Judging whether the pico cell covered by the pico base station satisfies a preset cell coverage condition, the preset cell coverage condition includes: the pico cell is completely covered by the macro cell covered by the deployed macro base station; or the pico cell is covered by at least A PBCH is completely covered by pico cells covered by other pico base stations; If so, configure the physical broadcast channel PBCH of the pico base station to be in a PBCH shielded state. 2. The method according to claim 1, further comprising: Informing neighboring base stations of the cell identity and master information block information of the pico cell. 3. The method according to claim 1 or 2, wherein configuring the physical broadcast channel PBCH of the pico base station is a PBCH shielded state, comprising: Set the resource position occupied by the PBCH as empty. 4. A cell handover/selection method, characterized in that, comprising: The source base station receives the reference signal strengths of the source base station and each adjacent base station of the source base station reported by the terminal; If the received reference signal strength satisfies a preset handover condition, determine a target base station to be handed over to for the terminal, where the handover condition includes that the reference signal strength of the source base station is lower than a first signal strength threshold, the The reference signal strength of the target base station is higher than a second signal strength threshold; Sending a cell switching instruction to the terminal, if the PBCH of the target base station is blocked, the cell switching instruction carries the cell identity and MIB of the target base station, wherein the MIB is pre-stored by the source base station. 5. A cell switching/selection method, characterized in that, if the terminal is in a connected state and moves, it includes: The terminal measures the reference signal strength of the source base station and each adjacent base station of the source base station and reports to the source base station; receiving a cell handover instruction sent by the source base station when the handover condition is met, and if the PBCH of the target base station is shielded, the cell handover instruction carries the cell identity and MIB of the target base station, wherein the MIB is the source base station Pre-stored, the handover condition includes that the reference signal strength of the source base station is lower than a first signal strength threshold, and the reference signal strength of the target base station is higher than a second signal strength threshold; Handover to the target base station according to the cell identity and MIB. 6. A base station configuration device, characterized in that it comprises: A judging unit, configured to judge whether a pico cell covered by a pico base station satisfies a preset cell coverage condition, and the preset cell coverage condition includes: the pico cell is completely covered by a macro cell covered by a deployed macro base station; or The pico cell is completely covered by at least one pico cell covered by other pico base stations whose PBCH is not shielded; The configuration unit is configured to configure the physical broadcast channel PBCH of the pico base station to be in a PBCH masked state when the judgment result of the judging unit is yes. 7. The device of claim 6, further comprising: A notification unit, configured to notify neighboring base stations of the cell identity and master information block information of the pico cell after the configuration unit configures the PBCH of the pico base station to be in a PBCH shielded state. 8. Apparatus as claimed in claim 6 or 7, characterized in that, The configuration unit is configured to set the resource position occupied by the PBCH as empty. 9. A base station, the base station being a source base station, comprising: a receiving unit, configured to receive the reference signal strengths of the source base station and the neighboring base stations of the source base station reported by the terminal; A handover unit, configured to determine a target base station to be handed over to for the terminal when the reference signal strength received by the receiving unit satisfies a preset handover condition, where the handover condition includes that the reference signal strength of the source base station is low at a first signal strength threshold, the reference signal strength of the target base station is higher than a second signal strength threshold; a sending unit, configured to send a cell switching instruction to the terminal, if the PBCH of the target base station is shielded, the cell switching instruction carries the cell identity and MIB of the target base station, wherein the MIB is the source Pre-stored by the base station. 10. A terminal, characterized in that, comprising: a measuring unit, configured to measure the reference signal strength of the source base station and each adjacent base station of the source base station and report to the source base station when the terminal is in the connected state and moves; a receiving unit, configured to receive a cell switching instruction sent by the source base station when the switching condition is met; if the PBCH of the target base station is shielded, the cell switching instruction carries the cell identity and MIB of the target base station, wherein the MIB pre-stored for the source base station; A cell selection/handover unit, configured to handover to the target base station according to the cell identity and MIB carried in the cell handover instruction received by the receiving unit. 11. A cell selection/handover system, comprising the base station according to claim 9 and the terminal according to claim 10.