WO2013071511A1

WO2013071511A1 - Information obtaining method, base station, and terminal device

Info

Publication number: WO2013071511A1
Application number: PCT/CN2011/082427
Authority: WO
Inventors: 李宏超; 周华; 吴建明
Original assignee: 富士通株式会社
Priority date: 2011-11-18
Filing date: 2011-11-18
Publication date: 2013-05-23

Abstract

An information obtaining method, a base station, and a user equipment. The method comprises: a base station obtaining system information of a neighboring cell; broadcasting the obtained system information of the neighboring cell. The system information of the neighboring cell comprises one or more pieces of the following information: a system frame number, PHICH configuration information, cyclic prefix type information, downlink bandwidth information, and the number of antenna ports dedicated to the cell. The embodiments of the present invention can decrease the signaling transmission complexity of the system and ensure stability of cell searching and cell identification by a user, and are applicable to various problems incurred by poor reception quality of broadcasted information.

Description

Information acquisition method, base station and terminal device

The present invention relates to the field of communications, and in particular, to an information acquisition method, a base station, and a terminal device. Background technique

In order to improve user coverage under enhanced long-term evolution (LTE-A: LTE-Advanced) systems, and to increase system throughput and user data transmission rates, heterogeneous network nodes are introduced, for example, these heterogeneous network nodes include home base stations ( HeNB, Home eNodeB), Pico-cell, etc., use a lower transmit power to cover a specific area or user, and the networking mode is relatively flexible.

Figure 1 is a schematic diagram of the Macro-Pico scene. As shown in Figure 1, users in the CRE area of the Pico cell will be greatly interfered with by the Macro cell. In the scenario where the macro-Pico cell is deployed in the same frequency, in order to improve the system resource utilization, the Pico cell covers more users, and receives power based on the reference signal (RSRP, Reference Signal). In the cell selection method of the Received Power, a Cell Range Expansion (CRE) region that is biased toward the micro cell is introduced, that is, the reference signal received power (RSRP) and the offset value of the Pico cell received by the user equipment UE are received. When the sum of (bias) is greater than the RSRP of the macro cell, the user equipment UE belongs to the micro cell. In conjunction with a certain elCIC mechanism, the overall throughput of the system can be improved.

Currently, the time domain elCIC mechanism has been written to the standard. Specifically, some subframes are configured as Almost Blank Subframes (ABS). In the ABS, in order to reduce interference to other cells, only common reference symbols and necessary few control channels are transmitted, and other Resources are empty.

However, in the process of implementing the present invention by the inventors, high-level signaling such as a broadcast channel (PBCH), a synchronization channel, a paging (Paging), and a system information block-1 (SIB-1, System Information Block-1) of a macro cell are found. It still interferes with the corresponding channel of the micro cell user equipment (PUE, Pico UE) in the CRE area of the Pico cell. The demodulation performance of the broadcast channel (PBCH) directly affects the stability of the user cell search and cell identification. In this way, the UE in the CRE area initiates initial access, enters the CRE area, or broadcasts the cell. When the information is changed, if the PBCH cannot be detected correctly, the UE has a problem in cell search and cell identification.

It should be noted that the above description of the technical background is only for the purpose of facilitating a clear and complete description of the technical solutions of the present invention and is convenient for understanding by those skilled in the art. The above technical solutions are not considered to be well known to those skilled in the art simply because these aspects are set forth in the background section of the present invention. Summary of the invention

An object of the embodiments of the present invention is to provide an information acquisition method, a base station, and a user equipment. The base station broadcasts system information of a neighboring cell, and solves the downlink channel of the edge user of the micro cell (Pico cell) after the CRE is used. It is subject to strong interference from the Macro cell, which affects the reception quality of PBCH and other system information.

An aspect of the present invention provides an information acquiring method, where the method includes: acquiring, by a base station, system information of a neighboring cell; and broadcasting the obtained system information of the neighboring cell; wherein, the system of the neighboring cell The information includes one or more of the following information: system frame number, PHICH configuration information, cyclic prefix type information, downlink bandwidth information, and number of cell-specific antenna ports.

According to another aspect of the present invention, an information acquisition method is provided, the method includes: receiving, by a user equipment, system information of a neighboring cell broadcast by a base station of a current home cell; where, the system information of the neighboring cell includes the following information One or more of the following: system frame number, PHICH configuration information, cyclic prefix type information, downlink bandwidth information, and number of cell-specific antenna ports.

According to another aspect of the present invention, a method for acquiring information is provided, the method includes: receiving, by a user equipment, control signaling or service data sent by a base station of a micro cell to which the micro cell belongs; Demodulating the control signaling or service data of the currently associated micro cell by using the system information of the currently associated micro cell to obtain corresponding control signaling or service data.

According to another aspect of the present invention, a base station is provided, the base station includes: an information acquiring unit, configured to acquire system information of a neighboring cell; a broadcasting unit, where the broadcasting unit is configured to obtain the phase The system information of the neighboring cell is broadcasted; The system information of the neighboring cell includes one or more of the following information: a system frame number, a PHICH configuration information, a cyclic prefix type information, a downlink bandwidth information, and a cell-specific antenna port number.

According to another aspect of the embodiments of the present invention, a user equipment is provided, where the user equipment includes:

a second receiving unit, configured to receive system information of a neighboring cell broadcast by a base station of a current home cell;

The system information of the neighboring cell includes one or more of the following information: a system frame number, a PHICH configuration information, a cyclic prefix type information, a downlink bandwidth information, and a number of a cell-specific antenna port.

An information receiving unit, configured to receive, by the user equipment, control signaling or service data sent by the base station of the micro cell currently belonging to the user equipment;

An information processing unit, configured to demodulate control signaling or service data of the currently associated micro cell by using system information of the currently associated micro cell when pre-storing system information of the currently associated micro cell Obtain corresponding control signaling or service data.

According to another aspect of an embodiment of the present invention, a computer readable program is provided, wherein when the program is executed in a base station, the program causes a computer to execute the above information acquisition method in the base station.

According to another aspect of an embodiment of the present invention, a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute the above information acquisition method in a base station.

According to another aspect of an embodiment of the present invention, a computer readable program is provided, wherein when the program is executed in a user device, the program causes the computer to execute the above information acquisition method in the user device.

According to another aspect of an embodiment of the present invention, a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute the above information acquisition method in a user device.

The beneficial effects of the embodiment of the present invention are: broadcasting system information of a neighboring cell by using a base station, Enabling the user equipment to obtain system information of the neighboring cell;

In the CRE area, the control information of the micro cell or the corresponding service data may be demodulated according to the obtained system information of the micro cell, and the downlink channel of the edge user of the micro cell (Pico cell) after the CRE is used is solved. It is subject to strong interference from the macro cell, which affects the reception quality of PBCH and other system information, and simplifies the signaling complexity of the system.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings. It should be understood that the embodiments of the invention are not limited in scope. The embodiments of the present invention include many variations, modifications, and equivalents within the scope of the appended claims.

Features described and/or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, in combination with, or in place of, features in other embodiments. .

It should be emphasized that the term "comprising", when used herein, refers to the presence of a feature, component, step or component, but does not exclude the presence or addition of one or more other features, components, steps or components.

DRAWINGS

The above and other objects, features and advantages of the embodiments of the present invention will become more <RTIgt;

Figure 1 is a schematic diagram of a Macro-Pico scene;

2 is a flowchart of an information acquisition method according to Embodiment 1 of the present invention;

3 is a flowchart of an information acquisition method according to Embodiment 2 of the present invention;

4 is a flowchart of an information acquisition method according to Embodiment 3 of the present invention;

5 is a flowchart of an information acquisition method according to Embodiment 4 of the present invention;

6 is a flowchart of an information acquisition method according to Embodiment 5 of the present invention;

7 is a flowchart of an information acquisition method according to Embodiment 6 of the present invention;

8 is a flowchart of an information acquisition method according to Embodiment 7 of the present invention;

9 is a schematic structural diagram of a base station according to Embodiment 8 of the present invention;

10 is a schematic structural diagram of a macro base station according to Embodiment 9 of the present invention; 11 is a schematic structural diagram of a micro base station according to Embodiment 10 of the present invention;

FIG. 12 is a schematic structural diagram of a user equipment according to Embodiment 11 of the present invention; FIG.

FIG. 13 is a schematic structural diagram of a user equipment according to Embodiment 12 of the present invention.

detailed description

Various embodiments of the present invention will be described below with reference to the accompanying drawings. These embodiments are merely illustrative and are not limiting of the invention. In order to enable the person skilled in the art to easily understand the principles and embodiments of the present invention, the embodiments of the present invention are described by taking the broadcast channel and system message reception enhancement in the LTE-A heterogeneous network as an example, but it can be understood that the present invention It is not limited to the above system, and is applicable to other systems involving various problems due to poor reception quality of broadcast information.

In the embodiment of the present invention, for a heterogeneous network, a base station including a macro cell base station and one or more micro cells is included. Each base station can obtain system information of the neighboring cell, and broadcast the acquired system information of the neighboring cell, so that the user equipment of the cell can receive the system information of the neighboring cell to move on the user equipment. When the neighboring cell is in the neighboring cell, the user equipment processes the received control signaling or service data by using the obtained system information of the neighboring cell when the broadcast information or other system information is poorly received. The information acquisition method of the embodiment of the present invention will be described below with reference to the accompanying drawings.

2 is a flow chart of an information acquisition method according to Embodiment 1 of the present invention. As shown in Figure 1, the method includes:

Step 201: The base station acquires system information of a neighboring cell.

In this embodiment, the base station may be a macro base station, so that the macro base station may obtain system information of the one or more adjacent micro cells; in addition, the base station may also be a micro base station; The manner of obtaining system information of the neighboring cell includes multiple types; for the macro base station:

The macro base station may collect system information of an adjacent pico cell to obtain system information of the adjacent micro cell;

For example, the operation, management, and maintenance (OAM) function of the network side actively sends the system information of the micro cell, and the macro base station can receive the system information of the micro cell delivered by the OAM to obtain the system information. System information of the micro cell; For example, the macro base station may send a request for sending system information of the micro cell to the 0AM of the network side, and receive system information of the micro cell that is sent by the 0AM according to the request;

In addition, the macro base station may also acquire system information of the neighboring micro cell by interacting with the base station of the adjacent micro cell, that is, the macro base station sends the micro cell to the base station of the adjacent micro cell. a request for system information, after receiving the request, the base station of the micro cell transmits the system information of the micro cell to the macro base station;

For a micro base station: the manner in which the system information of the neighboring cell is acquired is similar to the manner in which the macro base station acquires system information of the neighboring cell, for example, operation, management, and maintenance on the network side.

(OAM, Operation Administration and Maintenance), the entity actively sends the system information of the neighboring cell of the micro base station, and the micro base station can receive the system information of the neighboring cell delivered by the OAM; for example, the micro base station can The 0AM of the network side sends a request for acquiring system information of the neighboring cell, and receives system information of the neighboring cell that is sent by the 0AM according to the request. In addition, the micro base station can also interact with the base station of the neighboring cell. The method for obtaining the system information of the neighboring cell is similar to that of the macro base station, and details are not described herein again.

Step 202: Broadcast the obtained system information of the neighboring cell.

In this embodiment, the system information of the neighboring cell includes one or more of the following information: a system frame number (SFN), and a hybrid automatic retransmission request indication channel configuration (PHICH configuration) information, Cyclic Prefix type information, DL bandwidth information and Cell-Specific Antenna Ports Number; but not limited to the above information, other information may be included as needed;

The cyclic prefix type information may include cyclic prefix length information, that is, a regular length, or a cyclic prefix of an extended length.

In this embodiment, the base station may separately broadcast the obtained system information of the neighboring cell, or place the obtained system information of the neighboring cell in the system information of the cell corresponding to the base station, such as system information block type 4 (SIB4). Broadcast in System Information Block Type4). As shown in Table 1, the base station is a macro base station, and the SIB4 of the macro base station includes system information (such as the content of the scribe line portion) of the adjacent micro cell in addition to the original information of the SIB4. The situation is similar for the micro base station, and will not be described here. Table 1 SIB4

In this embodiment, the method may further include: the base station storing the obtained system information of the neighboring cell.

In the above embodiment, the neighboring cell may refer to a micro cell in a heterogeneous network.

According to the foregoing embodiment, the base station broadcasts system information of the neighboring cell, so that the user equipment UE connected to the base station obtains system information of the neighboring cell, and the UE switches to one of the neighboring cells or In the case that the cell is powered on or restarted, other control signaling (such as PDCCH, SIB-1, Paging, etc.) and data services of the cell may be demodulated according to the obtained system information of the cell.

In this embodiment, the method may further include: the base station reporting according to the reporting by the neighboring cell The quantity result determines that the user equipment UE is handed over to the target neighboring cell, and may also notify the user equipment UE of the identity information of the target neighboring cell;

The measurement result may include radio resource management (RRM, Radio Resource Management) measurement, such as reference signal received power (RSRP, Reference Signal Receiving Power) and reference signal receiving quality (RSRQ, Reference Signal Receiving Quality) reported by the neighboring cell. value.

In this way, when the UE obtains the identifier information of the target neighboring cell, the other control signaling and the corresponding service data of the target neighboring cell may be demodulated according to the system information of the cell corresponding to the identifier information.

In this embodiment, when the system information of the one or more neighboring cells is changed, the base station may further receive the changed system information reported by the base station of the neighboring cell; broadcast the changed system information or The changed system information is broadcasted in the system information of the cell corresponding to the base station, so that the user equipment UE obtains the system information of the changed micro cell in time, and ensures other control signaling (such as PDCCH, SIB-1, Paging, etc.) and correct demodulation of business data.

FIG. 3 is a flowchart of an information acquisition method according to Embodiment 2 of the present invention. On the user equipment side, the method includes:

Step 301: The user equipment receives system information of a neighboring cell broadcast by a base station of a current home cell.

In this embodiment, when the current home cell of the user equipment UE is a macro cell, the UE device may receive system information of a neighboring cell broadcast by the macro base station; where the current home cell of the user equipment UE is a micro cell, and is located When the central area of the micro cell is used, the user equipment UE may receive system information of a neighboring cell broadcast by the micro base station. If the user equipment is located in the CRE area of the micro cell, since the area is interfered by the macro base station, the user equipment receiving the broadcast information or other system information may be affected by the macro cell.

In this embodiment, the system information of the neighboring cell may be separately broadcast by the base station of the current home cell, or the system information of the neighboring cell may be included in the system of the current home cell. For example, when the base station of the current home cell is a macro base station, as shown in Table 1, the system information of the adjacent micro cell is included in the SIB4, and similarly, when the base station of the current home cell is used. The same is true for a micro base station.

In this embodiment, the method may further include: the user equipment UE storing the received system information of the neighboring cell. The neighbor cell identification information and the system information of the cell may be stored correspondingly. In addition, the system information received by the UE further includes system information of the neighbor cell change.

It can be seen from the above embodiment that after the user equipment UE obtains the system information of the neighboring cell, even if the following affects the broadcast information or other system information reception, for example, 1) the user equipment UE is in the neighboring cell (Cel l— 1) The CRE area is restarted or powered on, or 2) the user equipment UE moves from the central area of the neighboring cell (Cell-2) to the CRE area, or 3) the user equipment UE from a neighboring cell (Cell-3) Moving to the CRE area of another neighboring cell (Cell-4), or 4) when the UE moves to the CRE area of the neighboring cell (Cell-5) and the system information of the neighboring cell changes, due to the user equipment The UE has received the system information of the neighboring cell or the changed system information. Therefore, the user equipment UE can demodulate the control signaling and related service data according to the received system information, thereby solving the problems in the prior art.

In this embodiment, before the UE receives the system information of the neighboring cell broadcast by the base station of the current home cell, the method further includes: the user equipment first establishing a connection with the base station of the current home cell (see step 300). .

In the above embodiment, step 300 is an optional step. When the user equipment UE in the Connected state belongs to a macro cell or a Pico cell and is located in a central area, the UE may directly The macro base station or the micro base station receives the broadcasted system information of the neighboring cell, and does not need to perform the step 300.

In this embodiment, after the user equipment UE receives the system information of the neighboring cell, when the user equipment UE switches to the neighboring cell, even if the CRE area of the neighboring cell or the neighboring cell occurs The system information is changed, and the method further includes: demodulating control signaling or corresponding service data of the neighboring cell by using the received system information of the neighboring cell (see step 302). In this way, since the user equipment UE receives the system information of the neighboring cell in advance, the problem existing in the prior art is solved. This step 302 is an optional step, which can be performed only when the above four situations occur. In addition, in this embodiment, when the user equipment UE moves to a certain neighboring cell (such as using Cel l-B to indicate the certain neighboring cell), the user equipment UE does not receive the Cell-B in advance. System information. In this case, the user equipment UE first synchronizes to the cell with strong signal, establishes connection with the base station of the cell with strong signal, and acquires system information of the Cell-B from the base station of the cell.

In this case, the method may further include: the user equipment is synchronized to a cell with strong signal, and establishing a connection with a base station of the cell with strong signal; and receiving, by the base station of the cell with strong signal, the base station including the Cell-B System information of neighboring cells including system information. In this way, after the user equipment UE switches to the Cell-B, the user equipment UE can demodulate the control signaling of the one cell or the corresponding service data according to the system information of the Cell-B. In the above embodiment, for example, the cell with strong signal is a macro cell.

4 is a flow chart of an information acquisition method according to Embodiment 3 of the present invention. On the user equipment side, the method includes:

Step 401: The user equipment UE receives control signaling and/or service data sent by a base station of a current cell to which it belongs.

Step 402: Perform demodulation processing on the control signaling and/or service data by using the system information of the currently-occupied cell to pre-store the system information of the current cell to obtain corresponding control signaling or service data.

It can be seen that, when the user equipment UE is in the current cell, even if it is in the CRE area of the micro cell, when the user equipment UE switches to the micro cell, the system information of the cell obtained in advance may be used to receive the received information. Control signaling and/or service data are demodulated to solve the problems in the prior art.

In this embodiment, when the system information of the current cell is not pre-stored, the method further includes: the user equipment is synchronized to a cell with strong signal, and establishing a connection with a base station of the cell with strong signal; receiving a cell with strong signal The system information of the neighboring cell including the system information of the base station of the current cell to which the base station broadcasts (see step 403). Thus, when the user equipment switches to the current cell, the user equipment demodulates the control signaling and/or service data by using the received system information of the current cell (see step 404).

In the above embodiment, step 402 and step 403 are juxtaposed, and generally only one of them may be executed according to a specific situation. The information acquisition method of the embodiment of the present invention is described in detail below with reference to a specific scenario. In this embodiment, it is assumed that the cell with strong signal in the heterogeneous network is a macro cell, and the system information of the neighboring cell (micro cell) is broadcast by the macro cell as an example.

FIG. 5 is a flowchart of an information acquisition method according to Embodiment 4 of the present invention. For example, a scenario in which a user equipment UE in a connected state belongs to a macro cell is taken as an example. As shown in Figure 5, the method includes:

Step 501: The macro base station acquires system information (MIB) of the adjacent micro cell.

In this embodiment, the system information (MIB) of the micro cell is as described in Embodiments 1 to 3, and details are not described herein. In addition, the macro base station collects system information (MIB) of the micro cell as in Embodiment 1. As described in 3, it will not be described here.

Step 502: The macro base station sets the acquired system information (MIB) of the micro cell in the system information of the cell, and broadcasts the system information including the system information of the micro cell. In this embodiment, the macro base station The MIB can be included in the SIB4 of the macro cell for broadcast, which simplifies the complexity of the signaling transmission of the system, as shown in Table 1. In addition, the system information of the micro cell can be broadcast in other manners, such as a separate broadcast. Other methods can be determined according to the specific situation.

Step 503: The user equipment UE that belongs to the macro cell receives the system information broadcast by the macro base station, and acquires the system information MIB of the micro cell.

In this embodiment, the UE receives the SIB4 broadcast by the macro base station, and reads system information of the micro cell therefrom.

Step 504: store system information of the micro cell.

In this embodiment, the cell identification information of the micro cell may be stored corresponding to the system information of the micro cell;

In this way, when the user equipment UE switches to a certain target micro cell, the user equipment UE can find the corresponding system information of the target micro cell according to the cell identity information of the target micro cell, and utilize system information of the target micro cell. The control signaling of the target micro cell and the corresponding service data are demodulated.

Step 505: When the UE moves to the CRE area of the neighboring micro cell, the macro base station decides to switch the UE to the micro cell according to the measurement result reported by the user equipment UE, and notifies the corresponding target cell identity information of the UE. ; In this embodiment, the measurement result reported by the user equipment UE may include RRM measurement values such as RSRP and RSRQ, and the manner of determining the target cell to be switched is similar to the prior art, and details are not described herein again.

Step 506: The user equipment UE receives the identifier information of the target cell, and searches for system information of the target micro cell from the system information of the obtained micro cell.

Step 507: The user equipment UE demodulates the control signaling of the target micro cell and the corresponding service data by using system information of the target micro cell.

According to the foregoing embodiment, when the user equipment UE in the connected state belongs to the macro cell, the system information of the neighboring micro cell may be acquired from the macro base station, and after the UE switches to the target micro cell, the obtained target micro is obtained. The system information of the area demodulates the control information of the target micro cell and the corresponding service data, solves the problem caused by poor reception quality in the prior art, and can simplify the signaling transmission load of the system.

Figure 6 is a flow chart showing an information acquisition method according to Embodiment 5 of the present invention. For example, a scenario in which the user equipment UE in the connected state currently belongs to the micro cell 1 (Pico cel l-1) and is moving to the CRE region of another micro cell 2 (Pico cel l-2), where the target micro cell is located For Pico cel l-2. As shown in Figure 6, the method includes:

Step 601: When the user equipment UE moves to the CRE area of the micro cell 2, the macro eNodeB determines to switch the UE to the target micro cell according to the measurement result reported by the UE, and notifies the corresponding target cell identity information of the UE.

In this embodiment, the measurement result reported by the user equipment UE may include RRM measurement values such as RSRP and RSRQ, and the manner of determining the target cell to be switched is similar to the prior art, and is not described herein again, for example, the target micro cell is Pico cel l-2.

Step 602: The user equipment UE receives the identifier information of the target cell, and searches for system information of the target micro cell from the obtained system information of the micro cell.

In step 603, it is determined whether the system information of the target micro cell is found. If the determination result is yes, step 604 is performed; otherwise, step 608 is performed.

Step 604: The user equipment UE synchronizes to the macro cell and establishes a connection with the macro base station. The process of establishing a connection with the macro base station is similar to the prior art, and is not described here.

Step 605: The user equipment UE receives system information broadcast by the macro base station, and acquires a packet. System information of the microcells contained in the system information;

In this way, the user equipment UE reads the system information of the micro cell in the system information to obtain system information to the target micro cell; wherein the system information of the micro cell included in the system information broadcast by the macro base station can be according to the figure. Obtained in the manner described in step 501 shown in FIG.

Step 606: The user equipment UE moves to the CRE area of the micro area 2, and the macro base station decides to switch the UE to the micro area 2 according to the measurement result reported by the user equipment UE, and notifies the corresponding target cell identification information of the UE. ;

In this embodiment, the measurement result reported by the user equipment UE may include RRM measurement values such as RSRP and RSRQ, and the manner of determining the target cell to be switched is similar to the prior art, and details are not described herein.

Step 607: The user equipment UE receives the identifier information of the target cell, and searches for system information of the target micro cell from the system information of the obtained micro cell.

Step 608: The user equipment UE demodulates the control signaling of the target micro cell and the corresponding service data by using system information of the target micro cell.

In the above embodiment, if the user equipment UE is currently in the central area of the micro cell 1 (Pico cell-1), before the step 600, the method may further include the step of: receiving the base station broadcast of the currently belonging micro cell. System information of the neighboring cell, and storing system information of the neighboring cell.

Figure 7 is a flow chart showing an information acquisition method according to Embodiment 6 of the present invention. For example, a scene in which the user equipment UE is currently assigned to the micro cell 1 (Pico cell-1) and restarted or powered on in the CRE area of the micro cell 1 (Pico cel l-1) is taken as an example. As shown in Figure 7, the method includes:

Step 701: When the user equipment UE is restarted or powered on in the CRE area of the micro cell 1, the user equipment UE synchronizes to the macro cell to establish a connection with the macro base station.

The process of establishing a connection with the macro base station is similar to the prior art, and is not described here.

Step 702: The user equipment UE receives system information broadcast by the macro base station, and acquires system information of the micro area included in the system information.

The user equipment UE can read system information of the micro cell in the system information to obtain system information to the micro cell; the system information of the micro cell included in the system information broadcast by the macro base station can be as shown in FIG. Obtained in the manner described in step 501. Step 703: The macro base station decides to switch the UE to the target micro cell according to the measurement result reported by the user equipment UE, and notifies the corresponding target cell identity information of the UE.

In this embodiment, the measurement result reported by the user equipment UE may include RRM measurement values such as RSRP and RSRQ, and the manner of determining the target cell to be switched is similar to the prior art, and details are not described herein; For Pico cell-1.

Step 704: The user equipment UE receives the target cell identity information, and searches for system information of the target micro cell from the acquired system information of the micro cell.

Step 705: The user equipment UE demodulates the control signaling of the target micro cell and the corresponding service data by using system information of the target micro cell.

FIG. 8 is a flowchart of an information acquisition method according to Embodiment 7 of the present invention. For example, a scene in which the user equipment UE belongs to the micro cell 1 (Pico cell-1) and is in the CRE area of the micro cell 1 (Pico cel l-1), and the system information of the micro cell 1 changes. As shown in Figure 8, the method includes:

Step 801: When the system information of the micro cell changes, the base station of the micro cell notifies the macro base station of the macro cell of the updated system information. In this way, the macro base station can update the system information of the micro area in time;

In this embodiment, other micro base stations may also be notified, so that other micro base stations also update the system information of the micro area in time.

Since the system information of the micro cell changes, and since the primary synchronization signal/secondary synchronization signal/broadcast channel (PSS/SSS/PBCH) is strongly interfered by the macro cell (Macro cel l ), the corresponding system information cannot be correctly demodulated. Therefore, it is impossible to demodulate the remaining control signaling (such as PDCCH, DL-SCH, SIB-1, Paging, etc.) and service data. Therefore, the UE will re-synchronize with the strongest macro cell, establish a connection with the macro base station, receive system information of the system information including the adjacent micro cell broadcasted by the macro base station, such as SIB4, and read the adjacent micro cell therein. system message. Thus, the method further comprises the following steps:

Step 802: The user equipment UE synchronizes to the macro cell to establish a connection with the macro base station.

Step 803: The user equipment UE receives system information broadcast by the macro base station, and acquires system information of the micro area included in the system information.

The user equipment UE can read system information of the micro area in the system information, and the system information of the micro area 1 is updated system information. Step 804: The macro base station decides to switch the UE to the target micro cell according to the measurement result reported by the user equipment UE, and notifies the corresponding target cell identity information of the UE.

Step 805: The user equipment UE receives the identifier information of the target cell, and searches for system information of the target micro cell from the system information of the obtained micro cell.

Step 806: The user equipment UE demodulates the control signaling of the target micro cell and the corresponding service data by using system information of the target micro cell.

It can be seen from the foregoing embodiment that the macro base station or the micro base station collects system information of the neighboring cell, and the system information of the neighboring cell is placed in the SIB4 of the local area for broadcast, and the UE starts in the CRE area, or moves from another cell to The CRE area of the micro cell, or the information of the physical layer broadcast channel (PBCH, Physical Broadcast Channel) (such as system frame number SFN, PHICH configuration, downlink bandwidth, etc.) during the process of the UE moving from the central area of the micro cell to the CRE area When other system information (such as PDCCH, SIB-1, Paging, etc.) is changed, the UE first synchronizes to the macro cell to connect with the macro base station, and then reads the SIB4 broadcast by the macro base station to acquire corresponding system information of the adjacent micro cell. If the system information of the micro cell changes, the micro base station exchanges the latest system information to the macro base station and other micro base stations, so that the macro base station and other micro base stations can update their SIB4 to broadcast the latest neighbor system message to the user equipment in time. Therefore, when the user equipment is switched to the Pico cell or the cell is reselected to the Pico cell, the user equipment can demodulate other control signaling (such as PDCCH, SIB-1, in the local area by using the acquired system information of the micro cell. Paging, etc.) and data services.

Through the embodiments of the present invention, the stability of the user cell search and the cell identification is ensured, and the signaling transmission complexity of the system can be simplified, and is applicable to various problems caused by poor reception quality of broadcast information.

The embodiment of the invention further provides a macro base station, a micro base station and a user equipment, as described in the following embodiments. The principle of the macro base station, the micro base station, and the user equipment is similar to the information acquisition method based on the macro base station, the micro base station, and the user equipment. Therefore, the implementation of the macro base station, the micro base station, and the user equipment may refer to the implementation of the method. The repetitions are not repeated here.

FIG. 9 is a schematic structural diagram of a base station according to Embodiment 8 of the present invention. As shown in FIG. 9, the base station The method includes: an information acquiring unit 901 and a broadcasting unit 902; wherein

The information acquiring unit 901 is configured to acquire system information of one or more neighboring cells, and the broadcast unit 902 is configured to broadcast the acquired system information of the cell.

In this embodiment, the manner in which the information acquiring unit 901 acquires the system information of the neighboring cell is as described in Embodiment 1, and details are not described herein again.

As can be seen from the above, the information acquiring unit 901 acquires system information of one or more neighboring cells, and the broadcasting unit 902 broadcasts the acquired system information of the neighboring cell, so that the user equipment belonging to the macro cell or the micro cell can be Obtaining system information of the neighboring cell, so that when the user equipment UE switches to the neighboring cell and is in the CRE area of the neighboring cell, the user equipment UE can use the obtained system information solution of the neighboring cell Adjust other control signaling of the neighboring cell and corresponding service data.

In the foregoing embodiment, the base station may be a macro base station or a micro base station. And the adjacent cell includes a micro cell.

Figure 10 is a block diagram showing the structure of a macro base station according to Embodiment 9 of the present invention. As shown in FIG. 10, the macro base station includes an information acquiring unit 1001 and a broadcasting unit 1003. The functions of the information acquiring unit 1001 and the broadcasting unit 1003 are similar to those of the embodiment 8, and are not described herein again.

In this embodiment, the macro base station places the obtained system information of the adjacent micro cell in the system information of the cell, such as SIB4 (Table 1) for broadcast. Thus, as shown in FIG. 10, the macro base station may further include a configuration unit 1002, where the configuration unit 1002 is configured to place the acquired system information of the micro cell in system information of the macro cell.

And the broadcasting unit 1003 broadcasts the system information of the macro cell including the system information of the micro cell. Wherein, if the system information of the adjacent micro cells is included in the SIB4 broadcast, the broadcasting unit 1003 broadcasts the SIB4.

In this embodiment, if the system information of the adjacent micro cell changes, the macro base station may further receive the changed system information notified by the neighboring micro cell base station. Thus, as shown in FIG. 10, the macro base station may further include a first receiving unit 1004, where the first receiving unit 1004 is configured to receive the changed system information reported by the micro cell; And the broadcasting unit 1003 is further configured to broadcast the changed system information, or place the changed system information in the system information of the macro cell via the configuration unit 1002, and then broadcast. In this way, the macro base station can update the system information of the adjacent micro cells in time and broadcast. Therefore, when the user equipment is switched to the Pico cel l or the cell is reselected to the Pico cell, the user equipment can demodulate other control signaling and data services in the local area by using the acquired system information of the micro area.

In this embodiment, the macro base station further includes: a switching unit 1005 and a first notification unit 1006; wherein, the switching unit 1005 is configured to decide to switch the user equipment to the target micro cell according to the measurement result reported by the micro cell; A notification unit 1006 is configured to notify the user equipment of the identification information of the target micro cell. In this way, when the user equipment UE obtains the handover or reselection to the target micro cell and is located in the CRE area of the target micro cell, the UE may demodulate other control signaling and data services in the local area according to the system information corresponding to the identification information. .

According to the foregoing embodiment, the macro base station collects system information of the neighboring micro cell, and puts the system information of the neighboring micro cell into the SIB4 of the local area for broadcast, so that the UE starts in the CRE area, or moves from another cell. PBCH information (such as system frame number SFN, PHICH configuration, downlink bandwidth, number of cell antenna ports, etc.) and other system information during the CRE area of the micro cell or during the UE moving from the central area of the micro cell to the CRE area ( When the PDCCH, SIB-1, Paging, etc. are changed, the UE first synchronizes to the macro cell to connect with the macro base station, and then reads the SIB4 broadcast by the macro base station to obtain the corresponding system information of the adjacent micro cell. Therefore, when the user equipment is switched to the Pico cell or the cell is reselected to the Pico cell, the user equipment can demodulate other control signaling and data services in the local area by using the acquired system information of the micro cell. The embodiments of the present invention ensure the stability of the user cell search and the cell identification, simplify the signaling transmission complexity of the system, and are applicable to various problems caused by poor reception quality of the broadcast information.

Figure 11 is a block diagram showing the structure of a micro base station according to Embodiment 10 of the present invention. As shown in FIG. 11, the micro base station includes: an information acquiring unit 1101, a broadcasting unit 1103, and further includes a configuration unit 1102 and a first receiving unit 1104, and the functions of the foregoing units are similar to those of the corresponding unit of Embodiment 9. I will not repeat them here.

As shown in FIG. 11, the micro base station further includes: a second notification unit 1105, configured to notify the macro base station and/or other micro base station of system information of the micro cell; or notify the macro base of the changed system information. Station and/or other micro base station; wherein, the system information includes One or more of the following information: system frame number, PHICH configuration information, cyclic prefix type information, downlink bandwidth information, and number of cell-specific antenna ports.

In this embodiment, if the system information of the micro cell changes, the micro base station will notify the macro base station and/or other micro base station of the updated system information in time. In addition, when the macro base station and/or the other micro base station acquires the system information of the micro cell by using the information exchanged with the micro base station, the second notification unit 1105 may also report the system information of the micro cell to the macro base station and/or other Micro base station.

In addition, when the user equipment UE is in the CRE area of the micro area, when the macro base station switches the user equipment to the micro area, the micro base station of the micro area can communicate with the user equipment, and the user equipment can pass the acquired micro The system information of the zone demodulates other control signaling and data services in the zone.

FIG. 12 is a schematic structural diagram of a user equipment according to Embodiment 11 of the present invention. As shown in FIG. 12, the user equipment includes: a second receiving unit 1201, where the second receiving unit 1201 is configured to receive system information of one or more neighboring cells broadcast by a base station of a current cell to which the current cell belongs; The system information includes one or more of the following information: System frame number,

PHICH configuration information, cyclic prefix type information, downlink bandwidth information, and number of cell-specific antenna ports.

In this embodiment, as described in Embodiment 1, when the base station of the current cell is a macro base station, the macro base station may include the system information of the neighbor cell in the SIB4 of the current cell for broadcasting; When the base station of the current cell is a micro base station, the micro base station includes the system information of the neighboring cell in the SIB4 of the local cell for broadcast.

In this embodiment, when the user equipment restarts or powers on the CRE area of the current micro area, or moves from the current micro area to the CRE area of the target micro area, or the CRE of the user equipment located in the current micro area, The user equipment UE first synchronizes to the macro cell to establish a connection with the macro base station to receive the system information broadcast by the macro base station, and the system information of the current micro cell changes.

Thus, as shown in FIG. 12, the user equipment further includes: a first connecting unit 1202, configured to: before the second receiving unit 1201 receives system information of one or more neighboring cells broadcast by the base station of the current cell to which the cell belongs Establishing a connection between the user equipment and a base station of the current cell. The first connection unit 1202 is optional, and the UE belongs to When the macro base station or the micro base station central area is used, the first connection unit 1202 is not required.

In this embodiment, when the user equipment is restarted or powered on in the CRE area of the current micro area, or moves from the current micro area to the CRE area of the target micro area, or the user equipment is located in the current micro area. After the user equipment UE synchronizes to the macro cell, the base station may decide to switch to the target micro cell according to the measurement result reported by the user equipment, and notify the user. The target micro cell identification information of the device. Thus, as shown in FIG. 12, the user equipment UE further includes a third receiving unit 1203 and a processing unit 1204;

The third receiving unit 1203 is configured to: after receiving, by the second receiving unit 1201, system information of the one or more neighboring cells, receive, by the macro base station, a cell identity information that is determined to be used to switch the user equipment to the target micro cell;

The processing unit 1204 is configured to demodulate control signaling or corresponding service data of the target cell by using system information of the target cell corresponding to the cell identity information.

FIG. 13 is a schematic structural diagram of a user equipment according to Embodiment 12 of the present invention. As shown in Figure 13, the user equipment includes: an information receiving unit 1301 and an information processing unit 1302;

The information receiving unit 1301 is configured to receive, by the user equipment, control signaling or service data sent by the base station of the micro cell to which the micro cell belongs. The information processing unit 1302 is configured to use the system of the current micro cell when preserving the system information of the micro cell to which the current cell belongs. The information demodulates the control signaling or service data of the micro cell currently belonging to the corresponding control signaling or service data.

As shown in FIG. 13, the user equipment may further include: a second connection unit 1303 and a fourth receiving unit 1304;

The second connecting unit 1303 is configured to establish a connection with the macro base station when the system information of the currently associated micro cell is not pre-stored; the fourth receiving unit 1304 is configured to receive the system information that is broadcast by the macro base station and include the current micro cell. System information of neighboring cells.

In this way, when the user equipment UE is switched to the currently associated micro cell, the information processing unit 1302 of the user equipment UE may perform demodulation processing on the control signaling or service data of the currently belonged micro cell by using the received system information. , to obtain the corresponding control signaling or business data.

It can be seen from the foregoing embodiment that the user equipment UE in the central area of the micro cell can receive the system information broadcast by the base station of the micro cell to which the micro cell belongs to obtain the corresponding system information of the adjacent micro cell. Therefore, when the user equipment is switched to Pico cel l or the cell is reselected to Pico cel l The user equipment can demodulate other control signaling and data services in the local area by using the acquired system information of the micro area; ensure the stability of the user cell search and the cell identification, and simplify the signaling transmission complexity of the system, and is applicable to each A problem caused by poor reception quality of broadcast information.

The embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a base station, the program causes a computer to execute the information acquisition method as described in Embodiment 1, Embodiments 4 to 7 in the base station .

The embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the information acquisition method as described in Embodiment 1 and Embodiments 4 to 7 in the base station.

The embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a user equipment, the program causes a computer to execute in the user equipment as in Embodiments 2 and 3, and Embodiments 4 to 7 The information acquisition method described.

An embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute an information acquisition method as described in Embodiments 2 and 3 and Embodiments 4 to 7 in a user equipment. .

The above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software. The present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps. Logic components such as field programmable logic components, microprocessors, processors used in computers, and the like. The present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.

The present invention has been described in connection with the specific embodiments thereof, and it should be understood by those skilled in the art that these descriptions are not intended to limit the scope of the invention. A person skilled in the art can make various modifications and changes to the invention in accordance with the spirit and the principles of the invention, which are also within the scope of the invention.

Claims

Claim

1. An information acquisition method, the method comprising:

The base station acquires system information of the neighboring cell;

Broadcasting the obtained system information of the neighboring cell;

The system information of the neighboring cell includes one or more of the following information: a system frame number, a PHICH configuration information, a cyclic prefix type information, a downlink bandwidth information, and a cell-specific antenna port number.

2. The method according to claim 1, wherein the broadcasting the obtained system information of the neighboring cell comprises:

The obtained system information of the neighboring cell is placed in system information of a cell corresponding to the base station for broadcast.

The method according to claim 1 or 2, wherein the method further comprises: receiving system information of the change reported by the neighboring cell;

The changed system information is broadcasted, or the changed system information is included in the system information of the cell corresponding to the base station for broadcasting.

4. The method according to claim 1, wherein, when the base station is a macro base station, the method further includes:

Determining to switch the user equipment to the target cell according to the measurement result reported by the neighboring cell.

5. An information acquisition method, the method comprising:

The user equipment receives the system information of the neighboring cell broadcasted by the base station of the current home cell, where the system information of the neighboring cell includes one or more of the following information: system frame number, PHICH configuration information, and cyclic prefix type. Information, downlink bandwidth information and number of cell-specific antenna ports.

The method according to claim 5, wherein the system information of the neighboring cell is included in system information of the current home cell.

The method according to claim 5, wherein, when the base station of the current home cell is a micro base station, the user equipment is in a central area of the current home cell.

The method according to claim 5 or 6 or 7, wherein, when the base station of the current home cell is a macro base station, the user equipment receives the broadcast of the base station of the current home cell. Before the system information of the neighboring cell, the method further includes:

The user equipment synchronizes with the current home cell to establish a connection with the base station of the current home cell.

The method according to claim 8, wherein, after the user equipment receives the system information of the neighboring cell broadcasted by the base station of the current home cell, the method further includes:

Receiving, by the macro base station, a cell identity information that is determined to switch the user equipment to a target neighboring cell;

And using the system information of the target neighboring cell corresponding to the cell identity information to demodulate control signaling or corresponding service data of the target neighboring cell.

10. An information acquisition method, the method comprising:

The user equipment receives the control signaling or the service data sent by the base station of the micro cell to which the current micro cell belongs; when pre-storing the system information of the micro cell to which the current cell belongs, the system information of the current micro cell is used to control the current micro cell. The signaling or service data is demodulated to obtain corresponding control signaling or service data.

The method according to claim 10, wherein, when the system information of the current micro cell is not pre-stored, the method further includes:

The user equipment synchronizes to the macro cell to establish a connection with the macro base station;

Receiving system information of a neighboring cell including the system information of the currently associated micro cell broadcasted by the macro base station.

12. A base station, the base station comprising:

An information acquiring unit, configured to acquire system information of a neighboring cell, and a broadcast unit, where the broadcast unit is configured to broadcast the obtained system information of the neighboring cell;

The base station according to claim 12, wherein the base station further includes: a configuration unit, where the configuration unit is configured to: set the acquired system information of the neighboring cell to system information of a cell corresponding to the base station Medium

The broadcast unit is specifically configured to: describe the system information including the neighboring cell The system information of the cell corresponding to the base station is broadcasted.

The base station according to claim 12 or 13, wherein the base station further comprises: a first receiving unit, where the first receiving unit is configured to receive the changed system information reported by the base station of the neighboring cell;

And the broadcast unit is further configured to broadcast the changed system information, or include the changed system information in the system information of the cell corresponding to the base station for broadcasting.

The base station according to claim 14, wherein the base station is a macro base station, and the base station further includes:

And a switching unit, configured to determine to switch the user equipment to the target cell according to the measurement result reported by the neighboring cell.

16. A user equipment, the user equipment comprising:

a second receiving unit, configured to receive system information of a neighboring cell broadcasted by a base station of a current home cell;

The system information of the neighboring cell includes one or more of the following information: a system frame number, PHICH configuration information, cyclic prefix type information, downlink bandwidth information, and a number of cell-specific antenna ports.

The user equipment according to claim 16, wherein the system information of the neighboring cell is included in system information of a current home cell.

The user equipment according to claim 16, wherein the current home cell is a macro cell, and the user equipment further includes:

a first connection unit, where the first connection unit is configured to synchronize to the current home cell, and the current home cell, before the second receiving unit receives system information of a neighboring cell broadcast by a base station of a current home cell The base station establishes a connection.

The user equipment according to claim 18, wherein the user equipment further comprises: a third receiving unit, wherein the third receiving unit is configured to receive, at the second receiving unit, a phase broadcast by a base station of a current home cell. After receiving the system information of the neighboring cell, receiving, by the macro base station, a cell identity information that is determined by the user equipment to switch the user equipment to the target neighboring cell;

a processing unit, configured to demodulate control signaling or corresponding service data of the target neighboring cell by using system information of the target neighboring cell corresponding to the cell identity information.

20. A user equipment, the user equipment comprising:

An information receiving unit, configured to receive, by the user equipment, control signaling or service data sent by a base station of the micro cell to which the user belongs;

An information processing unit, configured to: when pre-storing the system information of the micro-area currently belonging to, use the system information of the currently-owned micro-region to solve control signaling or service data of the currently-associated micro-region Adjust the processing to obtain the corresponding control signaling or service data.

The user equipment of claim 20, wherein the user equipment further comprises: a second connection unit, wherein the second connection unit is configured to: when the system information of the currently associated micro cell is not pre-stored, The station establishes a connection;

And a fourth receiving unit, configured to receive system information of a neighboring cell that includes the system information of the current micro cell that is broadcast by the macro base station.

A computer readable program, wherein the program causes a computer to execute the information acquisition method according to any one of claims 1 to 4 in the base station when the program is executed in a base station.

A storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute the information acquisition method according to any one of claims 1 to 4 in a base station.

24. A computer readable program, wherein the program causes a computer to perform information acquisition as claimed in any one of claims 5 to 11 in the user device when the program is executed in a user device method.

A storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute the information acquisition method according to any one of claims 5 to 11 in a user equipment.