CN105376816A - Network coverage hole call drop processing method, micro node B and relevant equipment - Google Patents

Abstract

The invention discloses a network coverage hole call drop processing method, a micro node B and relevant equipment, and aims to solve the problem of coverage hole call drop and increase the capacity of the micro node B. The method comprises the following steps that: the micro node B receives measurement information reported by user equipment (UE), and judges whether actual measurement information matched with the measurement information exists in an actual measurement information set or not; if the actual measurement information matched with the measurement information exists, the micro node B determines a target cell from adjacent cells according to the measurement information or the actual measurement information matched with the measurement information; and the micro node B performs a switching negotiation with a target node B, and sends a cell switching command to the UE if the negotiation succeeds in order that the UE is switched from a service cell to the target cell. The invention also provides the micro node B and the relevant equipment. The micro node B and the relevant equipment have functions of implementing the method.

Description

A processing method for network coverage hole call drop, micro base station and related equipment

technical field

The present invention relates to the communication field, in particular to a method for processing network coverage holes, a micro base station and related equipment.

Background technique

A network coverage hole refers to a no-signal area, or a weak signal area, in a communication network. When a user equipment (User Equipment, referred to as UE) enters a network coverage hole, the voice (or data) quality of the UE deteriorates to unacceptable during communication, which will cause a radio link failure (RadioLink Failure, referred to as RLF) between the UE and the base station. Due to the high cost and long construction period of macro base stations, network operators generally deploy micro base stations within the coverage area of macro base stations to expand network coverage and improve network communication performance.

In order to solve the problem of UE dropping calls in the network coverage hole, in the prior art, the micro base station can set a signal strength threshold. When the signal strength measured by the UE on the serving cell is lower than the signal strength threshold, the micro base station starts the inter-frequency Handover, the UE is handed over to the macro base station, so that the UE can maintain a communication link with the core network through the macro base station. In order to ensure smooth handover of RLF UEs, the micro base station generally sets the signal strength threshold as the upper limit of the signal strength fluctuation range.

In practical applications, when the communication between the UE and the micro base station is normal, its signal strength may also be lower than the signal strength threshold. The used capacity is lower than the actual capacity, resulting in capacity loss of the micro base station.

Contents of the invention

The invention provides a method for processing call drop due to network coverage holes, a micro base station and related equipment, which can solve the problem of call drop due to coverage holes and improve the capacity of the micro base station.

The first aspect provides a method for handling call drops due to network coverage holes, including:

The micro base station receives the measurement information reported by the user equipment UE, and the measurement information includes cell identities and cell signal strengths of more than three neighboring cells;

The micro base station judges whether the actual measurement information in the actual measurement information set matches the measurement information, and the actual measurement information is the measurement information obtained by measuring adjacent cells in the network coverage hole;

If there is a match between the actual measurement information and the measurement information, the micro base station determines the target cell from neighboring cells according to the measurement information, or the actual measurement information that matches the measurement information;

The Femto base station conducts handover negotiation with the target base station. If the negotiation is successful, the Femto base station sends a cell handover command to the UE, so that the UE is handed over from the serving cell to the target cell. The Femto base station corresponds to the serving cell, and the target base station corresponds to the target cell.

In this way, the micro base station can judge whether the UE is in a network coverage hole or around the network coverage hole according to the actual measurement information. The capacity of the micro base station.

With reference to the first aspect, in the first implementation manner of the first aspect, before the micro base station determines whether the actual measurement information matches the measurement information in the actual measurement information set, the steps include:

The micro base station receives and stores the actual measurement information sent by the macro base station;

The micro base station establishes an actual measurement information set according to the actual measurement information.

In combination with the first aspect, in the second implementation manner of the first aspect, the micro base station judges whether the actual measurement information matches the measurement information in the actual measurement information set, including:

The micro base station takes each actual measurement information in the actual measurement information set as the target actual measurement information, and judges whether the absolute value of the difference between the signal strength of each cell in the measurement information and the corresponding cell signal strength in the target actual measurement information is equal to is greater than the corresponding preset cell threshold, and if so, it is determined that the actual measurement information of the target matches the measurement information.

In this way, the micro base station can determine whether the actual measurement information in the actual measurement set matches the measurement information by preset cell thresholds, which provides feasibility for implementation of the solution.

With reference to the first aspect, in the three implementation manners of the first aspect, the micro base station determines the target cell from neighboring cells according to the measurement information or the actual measurement information matched with the measurement information includes:

The micro base station determines that in the measurement information, the neighboring cell with the strongest cell signal strength is the target cell;

or,

The micro base station determines that the neighboring cell with the strongest signal strength among the actual measurement information matching the measurement information is the target cell.

In this way, the micro base station can handover the UE to an adjacent cell with the strongest signal strength, so as to provide users with the best communication quality.

The second aspect provides a method for dealing with call drop due to a network coverage hole, including:

The macro base station receives the radio link failure indication sent by the user equipment UE, the radio link failure indication carries the cell identity and cell signal strength of the serving cell, and the serving cell is the cell where the UE is located when the radio link fails;

The macro base station judges whether the UE is in a network coverage hole according to the cell signal strength of the serving cell, and if so, sends inter-frequency measurement configuration information to the UE according to the cell identity of the serving cell, so that the UE can measure adjacent cells according to the inter-frequency measurement configuration information;

The macro base station receives the actual measurement information sent by the UE, and the actual measurement information includes cell identities and cell signal strengths of more than three adjacent cells;

The macro base station sends the actual measurement information to the micro base station, and the micro base station corresponds to the serving cell.

In this way, the macro base station can obtain the actual measurement information in the network coverage hole and send it to the micro base station, and the micro base station can establish a set of actual measurement information.

The third aspect provides a method for handling call drops due to network coverage holes, including:

The user equipment UE measures the cell signal strength of adjacent cells to obtain measurement information, and the measurement information includes cell identities and cell signal strengths of more than three adjacent cells;

The UE sends measurement information to the femto base station, so that the femto base station matches the measurement information with the actual measurement information in the actual measurement information set, and the actual measurement information is the measurement information obtained by measuring neighboring cells in the network coverage hole;

The UE receives the cell switching command sent by the micro base station, and switches from the serving cell to the target cell according to the cell switching command, and the target cell is one of more than three adjacent cells.

The fourth aspect provides a micro base station, which has the function of the micro base station in the above method for handling call drops due to network coverage holes. The functions may be implemented by hardware, or may be implemented by executing corresponding software through hardware. Hardware or software includes one or more modules corresponding to the above-mentioned functions.

In a possible implementation manner, the Femto base station includes a receiver, a transmitter, and a processor:

The receiver is configured to receive measurement information reported by the user equipment UE, where the measurement information includes cell identities and cell signal strengths of more than three neighboring cells;

A processor, configured to determine whether the actual measurement information matches the measurement information in the actual measurement information set, where the actual measurement information is measurement information obtained by measuring adjacent cells in a network coverage hole;

a processor, configured to determine a target cell from more than three neighboring cells according to the measurement information, or the actual measurement information matching the measurement information, if there is a match between the actual measurement information and the measurement information;

A processor, configured to perform handover negotiation with the target base station, and if the negotiation is successful, trigger the sending unit to send a cell handover command to the UE;

The transmitter is configured to send a cell switching command to the UE, so that the UE switches from the serving cell to the target cell, where the target base station corresponds to the target cell.

In another possible implementation manner, the micro base station includes:

The receiving unit is configured to receive measurement information reported by the user equipment UE, where the measurement information includes cell identities and cell signal strengths of more than three neighboring cells;

A judging unit, configured to judge whether the actual measurement information matches the measurement information in the actual measurement information set, where the actual measurement information is measurement information obtained by measuring adjacent cells in a network coverage hole;

A determining unit, configured to determine a target cell from more than three neighboring cells according to the measurement information, or the actual measurement information matching the measurement information, if there is a match between the actual measurement information and the measurement information;

The handover negotiation unit is used to perform handover negotiation with the target base station, and if the negotiation is successful, trigger the sending unit to send a cell handover command to the UE;

The sending unit is configured to send a cell handover command to the UE, so that the UE is handed over from the serving cell to the target cell, where the target base station corresponds to the target cell.

The fifth aspect provides a macro base station, which specifically implements the functions of the macro base station in the method for handling call drops due to network coverage holes. The functions may be implemented by hardware, or may be implemented by executing corresponding software through hardware. Hardware or software includes one or more modules corresponding to the above-mentioned functions.

In a possible implementation manner, the macro base station includes a receiver, a transmitter, and a processor;

The receiver is configured to receive a radio link failure indication sent by the user equipment UE, where the radio link failure indication carries a cell identity and cell signal strength of a serving cell, where the serving cell is the cell where the UE is located when the radio link fails;

The processor is configured to judge whether the UE is in a network coverage hole according to the cell signal strength of the serving cell, and if so, trigger the sending unit to send inter-frequency measurement configuration information to the UE according to the cell identity of the serving cell, so that the UE performs inter-frequency measurement configuration information according to the inter-frequency measurement configuration information. Neighboring cells are measured;

The transmitter is configured to send inter-frequency measurement configuration information to the UE according to the cell identity of the serving cell, so that the UE measures neighboring cells according to the inter-frequency measurement configuration information;

The receiver is also used to receive actual measurement information sent by the UE, where the actual measurement information includes cell identities and cell signal strengths of more than three adjacent cells;

The transmitter is also used to send the actual measurement information to the micro base station, and the micro base station corresponds to the serving cell.

In another possible implementation manner, the macro base station includes:

The receiving unit is configured to receive the radio link failure indication sent by the user equipment UE, the radio link failure indication carries the cell identity and the cell signal strength of the serving cell, and the serving cell is the cell where the UE is located when the radio link fails;

The judging unit is used to judge whether the UE is in a network coverage hole according to the cell signal strength of the serving cell, and if so, trigger the sending unit to send inter-frequency measurement configuration information to the UE according to the cell identity of the serving cell, so that the UE can perform inter-frequency measurement configuration information according to the inter-frequency measurement configuration information. Neighboring cells are measured;

A sending unit, configured to send inter-frequency measurement configuration information to the UE according to the cell identity of the serving cell, so that the UE measures neighboring cells according to the inter-frequency measurement configuration information;

The receiving unit is also configured to receive actual measurement information sent by the UE, where the actual measurement information includes cell identities and cell signal strengths of more than three neighboring cells;

The sending unit is further configured to send the actual measurement information to the micro base station, and the micro base station corresponds to the serving cell.

The sixth aspect provides a UE, which has the function of implementing the UE in the method for handling call drop due to a network coverage hole. The functions may be implemented by hardware, or may be implemented by executing corresponding software through hardware. Hardware or software includes one or more modules corresponding to the above-mentioned functions.

In a possible implementation manner, the UE includes a receiver, a transmitter, and a processor;

a processor, configured to measure cell signal strengths of neighboring cells, and obtain measurement information, where the measurement information includes cell identities and cell signal strengths of more than three neighboring cells;

The transmitter is configured to send measurement information to the micro base station, so that the micro base station matches the actual measurement information in the actual measurement information set according to the measurement information, and the actual measurement information is the measurement information obtained by measuring adjacent cells in the network coverage hole;

a receiver, configured to receive a cell handover command sent by the micro base station;

A processor, configured to switch from a serving cell to a target cell according to a cell switching command, wherein the target cell is one of more than three neighboring cells.

In another possible implementation manner, the UE includes:

The measurement unit is used to measure the cell signal strength of adjacent cells to obtain measurement information, and the measurement information includes cell identities and cell signal strengths of more than three adjacent cells;

The sending unit is configured to send measurement information to the micro base station, so that the micro base station matches the actual measurement information in the actual measurement information set according to the measurement information, and the actual measurement information is the measurement information obtained by measuring adjacent cells in the network coverage hole;

a receiving unit, configured to receive a cell handover command sent by the micro base station;

A switching unit, configured to switch from a serving cell to a target cell according to a cell switching command, wherein the target cell is one of more than three neighboring cells.

As can be seen from the above technical solutions, the present invention has the following advantages:

In the present invention, the micro base station receives the measurement information reported by the UE, and judges whether the actual measurement information matches the measurement information in the actual measurement information set; , select a target cell from more than three neighboring cells; the Femto base station conducts handover negotiation with the target base station, and if the negotiation is successful, the Femto base station sends a cell handover command to the UE to handover the UE from the serving cell to the target cell. Since the measurement information obtained by the UE from measuring three or more neighboring cells is different in different locations of the serving cell, the mapping relationship between the measurement information and the geographical location of the UE is unique, and the femto base station stores the measurement information set of the network coverage hole. When the UE is close to a network coverage hole, the measurement information and the actual measurement information can be successfully matched at this time, and the micro base station can handover the UE to an adjacent cell in advance, thus solving the problem of call drop due to the coverage hole; at the same time, in the present invention, the micro base station only Handover the network coverage hole or the UEs around the network coverage hole avoids the problem of handing over normal UEs to adjacent cells, thus improving the capacity of the micro base station.

Description of drawings

Fig. 1 is a schematic flow chart of the processing method of network coverage hole call drop in the embodiment of the present invention;

Fig. 2 is another schematic flow chart of the processing method of network coverage hole call drop in the embodiment of the present invention;

Fig. 3 is another schematic flow chart of the processing method of network coverage hole call drop in the embodiment of the present invention;

Fig. 4 is a schematic diagram of a signaling flow of a processing method for call drop due to a network coverage hole in an embodiment of the present invention;

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

FIG. 6 is another schematic structural diagram of a micro base station in an embodiment of the present invention;

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

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

FIG. 9 is another schematic structural diagram of a micro base station in an embodiment of the present invention;

FIG. 10 is another schematic structural diagram of a macro base station in an embodiment of the present invention;

FIG. 11 is another schematic structural diagram of a UE in an embodiment of the present invention.

detailed description

For ease of understanding, the network elements in the present invention are introduced below, please refer to Figure 1:

A macro base station refers to a base station with a wide coverage area and a large user capacity, and its coverage area is generally several hundred meters to tens of kilometers.

A micro base station refers to a base station with a small coverage area and a small user capacity, and its coverage area is generally several meters to several hundred meters. For example pico base station. It can be used indoors.

UE refers to an electronic device capable of executing application programs and communicating with a micro base station or a macro base station. The UE may be an electronic device such as a mobile phone, a tablet computer, a personal digital assistant (Personal Digital Assistant, PDA for short), a sales terminal (Point of Sales, POS for short), and a vehicle-mounted computer.

In order to avoid call drop due to network coverage hole and improve the capacity of the micro base station, the present invention provides a method for processing call drop due to network coverage hole, please refer to Figure 1, the method includes the following processes:

1. The micro base station establishes the actual measurement information set:

S101. The macro base station receives a radio link failure indication sent by the UE;

In this embodiment, when the user enters a network coverage hole in the serving cell, the wireless link connection between the UE and the micro base station of the serving cell fails, that is, a call drop occurs, and the UE can re-establish a communication link with the macro base station , and report a radio link failure indication, where the radio link failure indication carries the cell identity and cell signal strength of the serving cell.

S102, the macro base station judges whether the UE is in a network coverage hole according to the cell signal strength of the serving cell, if yes, execute step S103, if not, execute step S106;

The macro base station can preset the network coverage hole threshold. After the macro base station receives the wireless link failure indication, it can obtain the cell signal strength carried by the radio link failure indication. When the cell signal strength is lower than the network coverage hole threshold, the macro base station determines that the UE In the network coverage hole, it is necessary to rebuild the communication link for the UE, and perform step S103; when the signal strength of the cell is higher than the network coverage hole threshold, the macro base station determines that the wireless link failure of the UE is caused by other reasons, such as adjacent channel interference, If the transmission quality of the information frame is poor, etc., the macro base station may perform step S106.

Wherein, the threshold value of the network coverage hole threshold may be set through experience, or may be obtained through actual measurement. Cell signal strength takes Reference Signal Received Power (RSRP for short) as an example. When RSRP is less than -85dBm, the service call success rate is very low and the call drop rate is high. The network coverage hole threshold can be set to -85dBm.

S103. The macro base station sends inter-frequency measurement configuration information to the UE according to the cell identity of the serving cell, so that the UE measures adjacent cells according to the inter-frequency measurement configuration information;

Among them, the measurement configuration information includes parameters such as the object to be measured by the UE, the cell list, the reporting method, the measurement identifier, the quality threshold control of the serving cell, the detection of the moving state, and the quantity configuration. event parameters etc. The inter-frequency measurement configuration information means that the measurement object is a cell with a frequency point different from that of the serving cell.

When the macro base station determines that the UE is in a network coverage hole, the macro base station obtains the inter-frequency measurement configuration information according to the cell identity reported by the UE, and sends the inter-frequency measurement configuration information to the UE, and the UE performs the inter-frequency measurement configuration information on the cell signals of neighboring cells. Strength is measured.

Specifically, the sampling location can be preset in the network coverage area, and the UE can measure the adjacent cells at the sampling location to obtain actual measurement information. The actual measurement information includes the cell identity (Identity, ID for short) and cell signal strength of N adjacent cells. N≥3.

For example, the serving cell is cell A, and the measurement objects are three neighboring cells B, C, and D. The signal strengths of the cells measured at sampling location 1 are (R1, R2, R3), and the actual measurement information 1 is (B( R1), C(R2), D(R3)), the cell signal strength measured at sampling location 2 is respectively the actual measurement information 2 is (B(R4), C(R5), D(R6)), at the sampling location 3 The cell signal strength obtained by measurement is (R7, R8, R9), and the actual measurement information 3 is (B(R7), C(R8), D(R9)), as shown in Table 1:

actual measurement information Place Cell B Cell C Cell D Actual Measurement Information 1 location 1 R1 R2 R3 Actual Measurement Information 2 location 2 R4 R5 R6

Actual Measurement Information 3 location 3 R7 R8 R9 … … … … … Actual measurement informationn location n Ri Rj Rk

Table 1

In practical applications, the manner of measuring the cell signal strength at other sampling locations is similar to the above measurement process, and will not be repeated here.

It should be noted that in practical applications, if there is no need to determine a certain location in the network coverage hole corresponding to the UE, the actual measurement information can also omit the location, as shown in Table 2:

actual measurement information Cell B Cell C Cell D Actual Measurement Information 1 R1 R2 R3 Actual Measurement Information 2 R4 R5 R6 Actual Measurement Information 3 R7 R8 R9 … … … … Actual measurement informationn Ri Rj Rk

Table 2

S104. The macro base station receives the actual measurement information sent by the UE;

Since the UE cannot communicate with the serving cell, after acquiring the actual measurement information, the UE sends the actual measurement information to the macro base station, and the macro base station can receive the actual measurement information sent by the UE.

S105. The macro base station sends the actual measurement information to the micro base station.

Wherein, the micro base station corresponds to the above serving cell. The macro base station sends the actual measurement information to the micro base station, and after the micro base station obtains the actual measurement information, it can store the actual measurement information locally, and establish an actual measurement information set according to the actual measurement information.

It can be understood that the macro base station may send the actual measurement information in a periodic sending manner or in a real-time sending manner, which is not limited here.

S106. The macro base station executes other processes.

When the UE is not in a network coverage hole, the macro base station can execute a default operator policy, and can also execute other procedures.

Optionally, the macro base station establishes an actual measurement information set according to the actual measurement information, and sends the actual measurement information set to the micro base station.

Specifically, after the macro base station receives several pieces of actual measurement information from the serving cell, it can establish an actual measurement information set according to the actual measurement information, and then send the actual measurement information set to the micro base station of the serving cell, and the micro base station will use the actual measurement information Information collections are stored locally.

In the embodiment and optional embodiments shown in FIG. 1 , the micro base station may establish an actual measurement information set corresponding to the network coverage hole according to the actual measurement information from the network coverage hole.

2. Obtain measurement information and match the measurement information with the actual measurement information in the actual measurement information set:

S201. The micro base station receives measurement information reported by the UE, where the measurement information includes cell identities and cell signal strengths of more than three neighboring cells;

In this embodiment, the micro base station corresponds to the serving cell, and the UE can measure the cell signal strength of neighboring cells in the serving cell, obtain measurement information, and send the measurement information to the micro base station, and the micro base station can receive the measurement information. The measurement information includes cell identities and cell signal strengths of more than three adjacent cells. The format of the measurement information is similar to the actual measurement information format in the embodiment shown in FIG. 1 , and will not be repeated here.

S202. The micro base station judges whether the actual measurement information matches the measurement information in the actual measurement information set, and if yes, execute step S203;

Wherein, the actual measurement information refers to the measurement information obtained by measuring the adjacent cells in the network coverage hole. Since the cell signal strengths of more than three adjacent cells measured at each location of the serving cell are different, the measurement information corresponds to the location of the serving cell one by one. If the actual measurement information matches the measurement information in the actual measurement information set, it indicates that the UE The location is located around the sampling location of the actual measurement information, and the probability of the UE dropping the call is very high. Therefore, the UE needs to switch to an adjacent cell with better signal strength to avoid the occurrence of the calling drop. Step S203 is executed. If not, It indicates that the location of the UE is not within the scope of the network coverage hole, no handover is required, and the operator's default policy can be implemented.

The micro base station determines whether the actual measurement information matches the measurement information in the actual measurement information set, and may specifically include the following implementation methods:

The micro base station takes each actual measurement information in the actual measurement information set as the target actual measurement information, and judges whether the absolute value of the difference between the signal strength of each cell in the measurement information and the corresponding cell signal strength in the target actual measurement information is equal to is greater than the corresponding preset cell threshold, and if so, it is determined that the actual measurement information of the target matches the measurement information.

Specifically, since both the measurement information and the actual measurement information are measured in the serving cell, the measurement information is the same as or similar to the corresponding adjacent cell in the actual measurement information. The micro base station can match the measurement information with the actual measurement information through the identifiers of neighboring cells. For example, according to cell B, cell C, and cell D, the cell signal strength of the measurement information is compared with the cell signal strength of the target actual measurement information. If If the difference is very small, it can be considered that the measurement information is the same as the actual measurement information, or very close, and it is determined that the actual measurement information of the target matches the measurement information. Wherein, the preset cell thresholds corresponding to different adjacent cells may be the same or different.

For example, the actual measurement information is shown in Table 2, the measurement information is (B(Rx), C(Ry), D(Rz)), the measurement information is compared with the actual measurement information 1, and the specific judgment is as follows:

If the absolute value of the difference between the signal strength of each cell in the measurement information and the signal strength of the corresponding cell in the actual measurement information 1 is not greater than the corresponding preset cell threshold, that is︱Rx-R1︱≤Y1;︱Ry-R2 ︱≤Y2; ︱Rz–R3︱≤Y3; if the three inequalities hold simultaneously, it is determined that the measurement information matches the actual measurement information 1; if ︱Rx-R1︱≤Y1; ︱Ry-R2︱≤Y2; ︱Rz–R3 ︱≤Y3; if the three inequalities do not hold at the same time, it is determined that the measurement information does not match the actual measurement information 1; among them, Y1 is the preset cell threshold corresponding to cell B, Y2 is the preset cell threshold corresponding to cell C, and Y3 is the cell The preset cell threshold corresponding to D.

It should be noted that the comparison may also be performed without using absolute values, and other calculation methods may also be used for comparison, which is not limited here.

When the measurement information matches the actual measurement information 1, the micro base station may execute step S203, or may continue to compare the measurement information with other actual measurement information in the actual measurement information set; when the measurement information does not match the actual measurement information 1, The Femtocell continues to compare the measurement information with actual measurement information 2, actual measurement information 3, . . . , actual measurement information n until one of the actual measurement information matches the measurement information, then step S203 is executed.

If all the actual measurement information in the actual measurement information set does not match the measurement information, it means that the measurement information is not in the network coverage hole, the UE does not need to perform handover, and the micro base station can execute the operator's default policy or other procedures, which are not limited here.

S203. If the actual measurement information matches the measurement information in the actual measurement information set, the Femto base station determines the target cell from neighboring cells according to the measurement information or the actual measurement information that matches the measurement information;

Wherein, both the measurement information and the actual measurement information include signal strengths of more than three adjacent cells.

Specifically, the micro base station can select a target cell from more than three adjacent cells in various ways, specifically including the following implementation methods:

1), the micro base station can determine that in the measurement information, the neighboring cell with the strongest cell signal strength is the target cell;

For example, take RSRP as an example for the cell signal strength, the measurement information is (B(-52dBm), C(-64dBm), D(-72dBm)), the cell signal of cell B is the strongest, and the micro base station can determine that cell B is target area.

or,

2) The micro base station determines that among the actual measurement information that matches the measurement information, the neighboring cell with the strongest cell signal strength is the target cell.

For example, take RSRP as an example for the cell signal strength. The actual measurement information that matches the measurement information is (B(-50dBm), C(-60dBm), D(-70dBm)). The base station may determine cell B as the target cell.

It can be understood that in practical applications, a neighboring cell whose signal strength is not the strongest may also be used as the target cell according to the actual situation, which is not limited here.

S204, the micro base station performs handover negotiation with the target base station, and if the negotiation is successful, execute step S205;

Wherein, the target base station may be a macro base station, a micro base station or other types of access network elements, which are not limited here.

S205. The micro base station sends a cell handover command to the UE, so that the UE is handed over from the serving cell to the target cell.

Wherein, the micro base station corresponds to the serving cell, and the target base station corresponds to the target cell. It can be seen from steps S204 and S205 that after the micro base station determines the target cell, the micro base station of the serving cell and the target base station of the target cell can perform handover negotiation to handover the UE from the serving cell to the target cell. The specific process can refer to the prior art, here I won't repeat them here.

In the method for processing call drop due to network coverage holes in the embodiment of the present invention, the UE needs to report measurement information to the micro base station. The following describes the method for processing call drop due to network coverage holes in the embodiment of the present invention from the UE side:

S301. The UE measures cell signal strengths of more than three adjacent cells to obtain measurement information;

In this embodiment, the measurement information includes cell signal strengths of the above three or more neighboring cells.

S302. The UE sends measurement information to the micro base station, so that the micro base station matches the measurement information with the actual measurement information in the actual measurement information set;

Wherein, the actual measurement information is measurement information obtained by measuring adjacent cells in a network coverage hole. The UE sends measurement information to the micro base station, and the micro base station judges whether the actual measurement information in the actual measurement information set matches the measurement information. If it matches, execute step S303. If it does not match, it indicates that the UE is not in the network coverage hole and can perform operation. The vendor's default policy is not limited here.

S303. The UE receives a cell switching command sent by the Femtocell, and switches from the serving cell to the target cell according to the cell switching command.

If there is a match between the actual measurement information and the measurement information in the actual measurement information set, it indicates that the UE is in a network coverage hole, or around the network coverage hole, the micro base station sends a cell handover command to the UE, and the UE can receive the cell handover command. The handover command is handover from the serving cell to the target cell, wherein the target cell is one of more than three neighboring cells.

Combining the above embodiments shown in FIG. 1 to FIG. 3 , the method for processing network coverage holes in the present invention will be introduced below with a signaling flow chart, as shown in FIG. 4 .

For ease of understanding, the method for processing network coverage holes in the present invention will be described in detail below in a specific application scenario:

In this specific application scenario, the UE is a mobile phone, the serving cell is cell A, the neighboring cells are cell B, cell C, and cell D, and the cell signal strength is RSRP; the cell signal strength threshold is -100dBm;

When the signal strength is measured at the location 1, location 2, location 3, ..., location n where the network coverage of cell A is empty, the actual measurement information obtained is shown in the following table:

measurement information Place Cell B Cell C Cell D Measurement Information 1 location 1 -50dBm -60dBm -70dBm Measurement information 2 location 2 -60dBm -70dBm -75dBm Measurement information 3 location 3 -40dBm -80dBm, -90dBm

After the macro base station receives the measurement information, it forwards it to the micro base station 1, and the micro base station 1 establishes an actual measurement information set after receiving the measurement information.

The mobile phone performs inter-frequency measurement on cell B, cell C, and cell D in cell A, and the measurement information obtained is (-52dBm, -58dBm, -72dBm), and the measurement information is sent to micro base station 1 of cell 1, and micro base station 1 will (-52dBm, -58dBm, -72dBm) is compared with the actual measurement information 1 in the actual measurement information set, and the difference in the signal strength of the cells corresponding to cell B, cell C, and cell D is calculated respectively. The preset cell threshold is 3dB as an example . match, indicating that the UE is near a network coverage hole;

Since -52dBm>-58dBm>-72dBm, micro base station 1 determines cell B as the target cell, micro base station 1 and micro base station 2 of cell B conduct handover negotiation, micro base station 1 sends a cell handover command to mobile phone 1, mobile phone 1 and micro base station 2 Establish a communication link and switch from cell A to cell B.

Assuming that the measurement information is (-70dBm, -55dBm, -78dBm), the micro base station 1 compares the measurement information with measurement information 1, measurement information 2, and measurement information 3 respectively, according to︱-70-50︱＞3,︱-70 -60︱＞3,︱-70-40︱＞3, it can be seen that the UE is not in a network coverage hole and does not need to be handed over.

The present invention can determine whether the UE is in a network coverage hole or near the network coverage hole. When the UE is located at the edge of the network coverage hole, the UE is switched in advance to avoid the occurrence of UE call drop. At the same time, when the UE is not in the network coverage hole or the network When the coverage hole is nearby, UEs with normal communication in cell A will not be handed over, thus improving the capacity of the micro base station.

Based on the processing method of network coverage hole call drop provided by the above embodiments, please refer to FIG. 5. The present invention provides a micro base station 500, which can realize the functions of the micro base station in the embodiment shown in FIG. 2. The micro base station 500 includes:

The receiving unit 501 is configured to receive measurement information reported by the UE, where the measurement information includes cell identities and cell signal strengths of more than three neighboring cells;

A judging unit 502, configured to judge whether the actual measurement information matches the measurement information in the actual measurement information set, where the actual measurement information is measurement information obtained by measuring neighboring cells in a network coverage hole;

The determination unit 503 is configured to determine the target cell from more than three neighboring cells according to the measurement information, or the actual measurement information matching the measurement information, if there is a match between the actual measurement information and the measurement information;

The handover negotiation unit 504 is configured to perform handover negotiation with the target base station, and if the negotiation is successful, trigger the sending unit to send a cell handover command to the UE, wherein the target base station corresponds to the target cell;

The sending unit 505 is configured to send a cell handover command to the UE, so that the UE is handed over from the serving cell to the target cell.

Optionally, the receiving unit 501 is also configured to receive actual measurement information sent by the macro base station;

The micro base station 500 also includes:

a storage unit 601, configured to store actual measurement information sent by the macro base station;

The establishing unit 602 is configured to establish an actual measurement information set according to the actual measurement information.

Optionally, the judging unit 502 is specifically configured to take each actual measurement information in the actual measurement information set as the target actual measurement information, and judge the difference between the signal strength of each cell in the measurement information and the corresponding cell signal strength in the target actual measurement information. Whether the absolute values of the differences are not greater than the corresponding preset cell thresholds, and if so, determine that the actual measurement information of the target matches the measurement information.

Optionally, the determining unit 503 is specifically configured to determine that in the measurement information, the neighboring cell with the strongest cell signal strength is the target cell; or,

The determining unit 503 is specifically configured to determine that among the actual measurement information that matches the measurement information, the neighboring cell with the strongest signal strength is the target cell.

Based on the processing method of network coverage hole call drop provided by the above embodiments, please refer to FIG. 7. The present invention provides a macro base station 700, which can realize the functions of the macro base station in the embodiment shown in FIG. 1. The macro base station 700 includes:

The receiving unit 701 is configured to receive the radio link failure indication sent by the UE, the radio link failure indication carries the cell identity and the cell signal strength of the serving cell, and the serving cell is the cell where the UE is located when the radio link fails;

The judging unit 702 is configured to judge whether the UE is in a network coverage hole according to the cell signal strength of the serving cell, and if so, trigger the sending unit to send inter-frequency measurement configuration information to the UE according to the cell identity of the serving cell, so that the UE can transmit inter-frequency measurement configuration information according to the inter-frequency measurement configuration information. Measure neighboring cells;

The sending unit 703 is configured to send inter-frequency measurement configuration information to the UE according to the cell identity of the serving cell, so that the UE measures neighboring cells according to the inter-frequency measurement configuration information;

The receiving unit 704 is also configured to receive actual measurement information sent by the UE, where the actual measurement information includes cell identities and cell signal strengths of more than three neighboring cells;

The sending unit 705 is further configured to send actual measurement information to the micro base station, where the micro base station corresponds to the serving cell.

Based on the method for processing calls dropped due to network coverage holes provided in the above embodiments, please refer to FIG. 8. The present invention provides a UE800, which can implement the functions of the UE in the embodiment shown in FIG. 3. The UE800 includes:

The measurement unit 801 is configured to measure the cell signal strength of adjacent cells to obtain measurement information, the measurement information includes cell identities and cell signal strengths of more than three adjacent cells;

The sending unit 802 is configured to send measurement information to the micro base station, so that the micro base station matches the actual measurement information in the actual measurement information set according to the measurement information, and the actual measurement information is the measurement information obtained by measuring adjacent cells in the network coverage hole ;

The receiving unit 803 is configured to receive a cell handover command sent by the micro base station;

A switching unit 804, configured to switch from a serving cell to a target cell according to a cell switching command, wherein the target cell is one of more than three adjacent cells.

For ease of understanding, the interaction between the modules of the macro base station, micro base station and UE in the present invention will be described in detail below in a specific application scenario:

In this specific application scenario, the UE is a mobile phone, the serving cell is cell A, the neighboring cells are cell B, cell C, and cell D, and the cell signal strength is RSRP;

When the network coverage of cell A is empty at point 1, point 2, point 3, ..., point n, the signal strength of the adjacent cell is measured, and the actual measurement information is obtained as shown in the following table:

measurement information Place Cell B Cell C Cell D Measurement Information 1 location 1 -50dBm -60dBm -70dBm Measurement information 2 location 2 -60dBm -70dBm -75dBm Measurement information 3 location n -40dBm -80dBm, -90dBm

After the receiving unit 701 receives the actual measurement information, the sending unit 703 forwards the information to the micro base station 1, after the receiving unit 501 receives the actual measurement information, the storage unit 601 stores the actual measurement information, and the establishing unit 602 establishes an actual measurement information set.

The measurement unit 801 performs inter-frequency measurement on the cell B, cell C, and cell D in the cell A, and the measurement information obtained is (-52dBm, -58dBm, -72dBm), and the sending unit 802 sends the measurement information to the micro base station 1 of the cell 1 , the judging unit 502 compares (-52dBm, -58dBm, -72dBm) with the actual measurement information 1 in the actual measurement information set, and calculates the absolute value of the difference in cell signal strength corresponding to cell B, cell C, and cell D respectively, The preset cell threshold is 3dB as an example, ︱-52-50︱<3, ︱-58-60︱<3, ︱-72-70︱<3 are established at the same time, so it can be determined that the measurement information and measurement information 1( -50dBm, -60dBm, -70dBm) match, indicating that the UE is near the network coverage hole; because -52dBm>-58dBm>-72dBm, the determination unit 503 determines that the cell B is the target cell, and the handover negotiation unit 504 and the micro base station 2 of the cell B Handover negotiation is performed, the sending unit 505 sends a cell switching command to the receiving unit 803, the receiving unit 803 receives the cell switching command, the mobile phone 1 establishes a communication link with the micro base station 2, and the switching unit 804 switches from cell A to cell B according to the cell switching command .

Assuming that the measurement information is (-70dBm, -55dBm, -78dBm), the judging unit 502 compares the measurement information with measurement information 1, measurement information 2, and measurement information 3, ︱-70-50︱>3, ︱-70- 60︱＞3,︱-70-40︱＞3, it can be seen that the UE is not in a network coverage hole, no handover is required, and the operator’s default policy can be implemented.

The present invention can determine whether the UE is in a network coverage hole or near the network coverage hole. When the UE is located at the edge of the network coverage hole, the UE is switched in advance to avoid the occurrence of UE call drop. At the same time, when the UE is not in the network coverage hole or the network When the coverage hole is nearby, UEs with normal communication in cell A will not be handed over, thus improving the capacity of the micro base station.

Based on the method for processing calls dropped due to network coverage holes provided by the present invention, the present invention provides a micro base station 900 for realizing the functions of the micro base station in the embodiment shown in FIG. 2 . As shown in FIG. 9 , the micro base station 900 includes a processor 903 , the transmitter 902 and the receiver 901 , where the processor 903 , the transmitter 902 and the receiver 901 are connected to each other through a bus 904 .

The receiver 901 is configured to receive measurement information reported by the UE, the measurement information includes cell identities and cell signal strengths of more than three neighboring cells

The processor 903 is configured to determine whether the actual measurement information matches the measurement information in the actual measurement information set, where the actual measurement information is measurement information obtained by measuring neighboring cells in a network coverage hole;

The processor 903 is further configured to determine a target cell from more than three adjacent cells according to the measurement information, or the actual measurement information matching the measurement information, if there is a match between the actual measurement information and the measurement information;

The processor 903 is further configured to perform handover negotiation with the target base station, and if the negotiation is successful, trigger the sending unit to send a cell handover command to the UE;

The transmitter 902 is configured to send a cell switching command to the UE, so that the UE switches from the serving cell to the target cell, where the target base station corresponds to the target cell.

The processor 903 may be a general-purpose processor, including a central processing unit (Central Processing Unit, referred to as: CPU), a network processor (Network Processor, referred to as NP), etc.; it may also be a digital signal processor (Digital Signal Processing, referred to as DSP), an application-specific integrated circuit ( Application Specific Integrated Circuit, referred to as ASIC), Field-Programmable Gate Array (Field-Programmable Gate Array, referred to as FPGA) or other programmable logic devices.

When the processor 903 is a CPU, the femto base station may further include a memory 905 for storing programs. Specifically, the program may include program code, and the program code includes computer operation instructions. The memory 905 may include a random access memory (Random Access Memory, RAM for short), and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory. The processor 903 executes the program codes stored in the memory to realize the above functions.

Optionally, the receiver 901 is also configured to receive actual measurement information sent by the macro base station;

a memory 905, configured to store actual measurement information sent by the macro base station;

The processor 903 is configured to establish an actual measurement information set according to the actual measurement information.

Optionally, the processor 903 is specifically configured to use each actual measurement information in the actual measurement information set as the target actual measurement information, and determine the difference between the signal strength of each cell in the measurement information and the corresponding cell signal strength in the target actual measurement information. Whether the absolute values of the differences are not greater than the corresponding preset cell thresholds, and if so, determine that the actual measurement information of the target matches the measurement information.

Optionally, the processor 903 is specifically configured to determine that in the measurement information, the neighboring cell with the strongest cell signal strength is the target cell;

or,

Optionally, the processor 903 is specifically configured to determine that in the actual measurement information that matches the measurement information, a neighboring cell with the strongest signal strength is the target cell.

Based on the method for processing network coverage holes provided above in the present invention, the present invention provides a macro base station 1000 for realizing the functions of the macro base station in the embodiment shown in FIG. 1 . As shown in FIG. 10 , the macro base station 1000 includes a receiver 1001 , the transmitter 1002 and the processor 1003 , wherein the processor 1003 , the transmitter 1002 and the receiver 1001 are connected to each other through a bus 1004 .

The receiver 1001 is configured to receive the radio link failure indication sent by the UE, the radio link failure indication carries the cell identity and cell signal strength of the serving cell, and the serving cell is the cell where the UE is located when the radio link fails;

The processor 1003 is configured to judge whether the UE is in a network coverage hole according to the cell signal strength of the serving cell, and if so, trigger the sending unit to send inter-frequency measurement configuration information to the UE according to the cell identity of the serving cell, so that the UE can transmit the inter-frequency measurement configuration information according to the inter-frequency measurement configuration information. Measure neighboring cells;

The transmitter 1002 is configured to send inter-frequency measurement configuration information to the UE according to the cell identity of the serving cell, so that the UE measures neighboring cells according to the inter-frequency measurement configuration information;

The receiver 1001 is also configured to receive actual measurement information sent by the UE, where the actual measurement information includes cell identities and cell signal strengths of more than three neighboring cells;

The transmitter 1002 is also configured to send actual measurement information to the micro base station, where the micro base station corresponds to the serving cell.

Processor 1003 may be a general processor, including CPU, NP, etc.; it may also be DSP, ASIC, FPGA or other programmable logic devices.

When the processor 1003 is a CPU, the femto base station may further include a memory 1005 for storing programs. Specifically, the program may include program code, and the program code includes computer operation instructions. The memory 1005 may include RAM, and may also include non-volatile memory, such as at least one disk memory.

Based on the processing method of the network coverage hole provided above in the present invention, please refer to FIG. 11 , the present invention provides a UE1100 for realizing the functions of the UE in the embodiment shown in FIG. 3 , and the UE1100 includes a receiver 1101, a transmitter 1102 and a 1103, wherein the receiver 1101, the transmitter 1102 and the processor 1103 are connected to each other through a bus 1104.

Processor 1103, configured to measure cell signal strengths of neighboring cells, and obtain measurement information, where the measurement information includes cell identities and cell signal strengths of more than three neighboring cells;

The transmitter 1102 is configured to send measurement information to the micro base station, so that the micro base station matches the actual measurement information in the actual measurement information set according to the measurement information, and the actual measurement information is the measurement information obtained by measuring adjacent cells in the network coverage hole ;

The receiver 1101 is configured to receive a cell handover command sent by the micro base station;

The processor 1103 is configured to switch from a serving cell to a target cell according to a cell switching command, where the target cell is one of more than three adjacent cells.

Processor 1103 may be a general processor, including CPU, NP, etc.; it may also be DSP, ASIC, FPGA or other programmable logic devices.

When the processor 1103 is a CPU, the femto base station may further include a memory 1105 for storing programs. Specifically, the program may include program code, and the program code includes computer operation instructions. The memory 1105 may include RAM, and may also include non-volatile memory, such as at least one disk memory.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions for enabling a computer device (which may be a personal computer, a server, or a micro base station, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disk or optical disk and other media that can store program codes.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still understand the foregoing The technical solutions recorded in each embodiment are modified, or some of the technical features are replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (12)

1. a processing method for network coverage cavity call drop, is characterized in that, comprising:

The metrical information that micro-base station receives user equipment UE reports, described metrical information comprises cell ID and the cell signal strength of more than three adjacent cells;

Described micro-base station judges that whether there is actual measurement information in actual measurement information aggregate mates with described metrical information, and described actual measurement information is to the metrical information that the measurement of described adjacent cell obtains in network coverage cavity;

If there is actual measurement information to mate with described metrical information, described micro-base station is believed according to described measurement

Breath, or the actual measurement information of mating with described metrical information, determine that target is little from described adjacent cell

District;

Described micro-base station and target BS carry out handover negotiation optimization, if consult successfully, then described micro-base station sends cell handover command to described UE, described UE is made to switch to described Target cell from Serving cell, wherein, described micro-base station is corresponding with described Serving cell, and described target BS is corresponding with described Target cell.

2. method according to claim 1, is characterized in that, whether described micro-base station judges to exist in actual measurement information aggregate before actual measurement information is mated with described metrical information and comprise:

Described micro-base station receives and stores the actual measurement information of macro base station transmission;

Actual measurement information aggregate is set up according to described actual measurement information in described micro-base station.

3. method according to claim 1, is characterized in that, described micro-base station judges that whether there is actual measurement information in actual measurement information aggregate mates with described metrical information, comprising:

Described micro-base station respectively with each actual measurement information in actual measurement information aggregate for target actual measurement information, judge the absolute value of the difference of the cell signal strength that each cell signal strength is corresponding with described target actual measurement information in described metrical information, whether be all not more than corresponding default cell threshold, if so, then determine that described target actual measurement information is mated with described metrical information.

4. according to the method in any one of claims 1 to 3, it is characterized in that, described micro-base station is according to described metrical information, or the actual measurement information of mating with described metrical information, from described adjacent cell, determine that Target cell comprises:

Described micro-base station determines that, in described metrical information, the adjacent cell that cell signal strength is the strongest is Target cell;

Or,

Described micro-base station determines that in the actual measurement information of mating with described metrical information, the adjacent cell that cell signal strength is the strongest is Target cell.

5. a processing method for network coverage cavity call drop, is characterized in that, comprising:

Macro base station receives the Radio Link Failure instruction that user equipment (UE) sends, and described Radio Link Failure instruction carries cell ID and the cell signal strength of Serving cell, and described Serving cell is described UE residing community when Radio Link Failure;

According to the cell signal strength of described Serving cell, described macro base station judges whether described UE is in network coverage cavity, if, then send different-frequency measure configuration information according to the cell ID of described Serving cell to described UE, described UE is measured adjacent cell according to described different-frequency measure configuration information;

Described macro base station receives the actual measurement information that described UE sends, and described actual measurement information comprises cell ID and the cell signal strength of more than three adjacent cells;

Described actual measurement information is sent to micro-base station by described macro base station, and described micro-base station is corresponding with described Serving cell.

6. a processing method for network coverage cavity call drop, is characterized in that, comprising:

The cell signal strength of user equipment (UE) measure neighbor cells, obtains metrical information, and described metrical information comprises cell ID and the cell signal strength of more than three adjacent cells;

Described UE sends described metrical information to micro-base station, described metrical information is mated with the actual measurement information in actual measurement information aggregate by described micro-base station, and described actual measurement information is to the metrical information that the measurement of described adjacent cell obtains in network coverage cavity;

Described UE receives the cell handover command that described micro-base station sends, and switch to Target cell according to described cell handover command from Serving cell, described Target cell is one in described more than three adjacent cells.

7. a micro-base station, is characterized in that, comprising:

Receiving element, for receiving the metrical information of reported by user equipment UE, described metrical information comprises cell ID and the cell signal strength of more than three adjacent cells;

Judging unit, for judging that whether there is actual measurement information in actual measurement information aggregate mates with described metrical information, described actual measurement information is to the metrical information that the measurement of described adjacent cell obtains in network coverage cavity;

Determining unit, if mate with described metrical information for there is actual measurement information, according to described metrical information, or the actual measurement information of mating with described metrical information, from described more than three adjacent cells, determine Target cell;

Handover negotiation optimization unit, for carrying out handover negotiation optimization with target BS, if consult successfully, then triggers transmitting element and sends cell handover command to described UE;

Transmitting element, for sending cell handover command to described UE, make described UE switch to described Target cell from Serving cell, wherein, described target BS is corresponding with described Target cell.

8. micro-base station according to claim 7, is characterized in that,

Described receiving element, also for receiving the actual measurement information that macro base station sends;

Described micro-base station also comprises:

Memory cell, for storing the actual measurement information that macro base station sends;

Set up unit, for setting up actual measurement information aggregate according to described actual measurement information.

9. micro-base station according to claim 7, it is characterized in that, described judging unit specifically for respectively with each actual measurement information in actual measurement information aggregate for target actual measurement information, judge the absolute value of the difference of the cell signal strength that each cell signal strength is corresponding with described target actual measurement information in described metrical information, whether be all not more than corresponding default cell threshold, if so, then determine that described target actual measurement information is mated with described metrical information.

10. the micro-base station according to any one of claim 7 to 9, is characterized in that, described determining unit is specifically for determining that, in described metrical information, the adjacent cell that cell signal strength is the strongest is Target cell;

Or,

Described determining unit is specifically for determining that in the described actual measurement information of mating with described metrical information, the adjacent cell that cell signal strength is the strongest is Target cell.

11. 1 kinds of macro base stations, is characterized in that, comprising:

Receiving element, for receiving the Radio Link Failure instruction that user equipment (UE) sends, described Radio Link Failure instruction carries cell ID and the cell signal strength of Serving cell, and described Serving cell is described UE residing community when Radio Link Failure;

Judging unit, for judging whether described UE is in network coverage cavity according to the cell signal strength of described Serving cell, if, then trigger transmitting element and send different-frequency measure configuration information according to the cell ID of described Serving cell to described UE, described UE is measured adjacent cell according to described different-frequency measure configuration information;

Transmitting element, sends different-frequency measure configuration information for the cell ID according to described Serving cell to described UE, described UE is measured adjacent cell according to described different-frequency measure configuration information;

Described receiving element, also for receiving the actual measurement information that described UE sends, described actual measurement information comprises cell ID and the cell signal strength of more than three adjacent cells;

Described transmitting element, also for described actual measurement information is sent to micro-base station, described micro-base station is corresponding with described Serving cell.

12. 1 kinds of user equipment (UE)s, is characterized in that, comprising:

Measuring unit, for the cell signal strength of measure neighbor cells, obtains metrical information, and described metrical information comprises cell ID and the cell signal strength of more than three adjacent cells;

Transmitting element, for sending described metrical information to micro-base station, described micro-base station is mated with the actual measurement information in actual measurement information aggregate according to described metrical information, and described actual measurement information is to the metrical information that the measurement of described adjacent cell obtains in network coverage cavity;

Receiving element, for receiving the cell handover command that described micro-base station sends;

Switch unit, for switching to Target cell according to described cell handover command from Serving cell, wherein, described Target cell is one in described more than three adjacent cells.