CN106332234A - Cell access method and apparatus - Google Patents

Abstract

The invention discloses a cell access method. When receiving a cell access request sent by a terminal, a base station determines the service configuration file identifier SPID corresponding to the terminal; according to the preset mapping relationship between the SPID and the cell ID, the The base station acquires the cell identifier corresponding to the determined SPID; the base station accesses the terminal to the cell corresponding to the acquired cell identifier. The invention also discloses a cell access device. The invention improves the flexibility of cell access mode.

Description

Cell access method and device

technical field

The present invention relates to the field of wireless communication, in particular to a cell access method and device.

Background technique

In the LTE (Long Term Evolution, Long Term Evolution) mobile communication system, when a base station contains multiple types of terminal equipment, such as terminal equipment of the three major operators, the base station cannot identify the operator to which each terminal equipment belongs. For example, when each terminal device initiates a cell access request to the base station, and the cell that each terminal device requires to access is the same cell, the base station can only access the corresponding cell according to the access request of each terminal device However, this type of cell access may lead to overload of network resources corresponding to the accessed cell, while a large number of network resources of other cells are idle. Obviously, this type of cell access is not flexible enough.

Contents of the invention

The main purpose of the present invention is to propose a cell access method and device, aiming at solving the technical problem that the cell access method is not flexible enough.

In order to achieve the above object, the present invention provides a cell access method, the cell access method includes the following steps:

When receiving the cell access request sent by the terminal, the base station determines the service profile identifier SPID corresponding to the terminal;

According to the preset mapping relationship between the SPID and the cell identifier, the base station acquires the cell identifier corresponding to the determined SPID;

The base station accesses the terminal to the cell corresponding to the acquired cell identifier.

Preferably, the step of the base station connecting the terminal to the cell corresponding to the acquired cell ID includes:

The base station determines the identity of the corresponding cell to be accessed in the cell access request;

The base station compares the identity of the cell to be accessed with the obtained cell identity;

When the identifier of the cell to be accessed matches the obtained cell identifier, the base station accesses the terminal to the cell corresponding to the obtained cell identifier.

Preferably, after the base station compares the identity of the cell to be accessed with the obtained cell identity, the cell access method further includes:

When the identity of the cell to be accessed does not match the obtained cell identity, the base station sends the cell frequency point corresponding to the obtained cell identity to the terminal, so that the terminal selects the cell corresponding to the cell frequency point according to the obtained cell frequency point Cells whose signal strength meets the preset conditions and feed back cell access requests;

When receiving the cell access request fed back by the terminal, the base station accesses the terminal to a cell whose signal strength meets a preset condition.

Preferably, after the step of the base station connecting the terminal to the cell corresponding to the acquired cell ID, the cell access method includes:

If the terminal access is successful, the base station sends the cell frequency point corresponding to the SPID to the terminal, so that the terminal receives the cell frequency point corresponding to the cell whose signal strength is greater than the preset threshold in the cell frequency points according to the received cell frequency point feedback. point;

When receiving the cell frequency point fed back by the terminal, the base station determines the cell to be switched based on the received cell frequency point;

The base station switches the terminal to the determined cell.

Preferably, if the cell frequency points fed back by the terminal include multiple cell identities, the step of the base station determining the cell to be switched based on the received cell identities includes:

The base station prioritizes the cells corresponding to the received cell identifiers;

The base station uses a cell with a high priority as a cell to be handed over.

In addition, in order to achieve the above purpose, the present invention also proposes a cell access device, the cell access device includes:

A determining module, configured to determine the service profile identifier SPID corresponding to the terminal when receiving the cell access request sent by the terminal;

An acquisition module, configured to acquire the cell identity corresponding to the determined SPID according to the preset mapping relationship between the SPID and the cell identity;

An access module, configured to connect the terminal to the cell corresponding to the acquired cell identifier.

Preferably, the access module includes:

A determining unit, configured to determine the identity of the corresponding cell to be accessed in the cell access request;

A comparing unit, configured to compare the identity of the cell to be accessed with the obtained cell identity;

The first accessing unit is configured to, when the identifier of the cell to be accessed matches the acquired cell identifier, access the terminal to the cell corresponding to the acquired cell identifier.

Preferably, the access module further includes:

A sending unit, configured to send a cell frequency point corresponding to the obtained cell identity to the terminal when the cell identity to be accessed does not match the obtained cell identity, so that the terminal selects a cell frequency point according to the obtained cell frequency point Cells whose signal strength meets the preset conditions in the corresponding cells and feed back cell access requests;

The second accessing unit is configured to, when receiving a cell access request fed back by the terminal, access the terminal to a cell whose signal strength meets a preset condition.

Preferably, the cell access device further includes:

The sending module is configured to send the cell frequency point corresponding to the SPID to the terminal if the terminal access is successful, so that the terminal receives the cell frequency point corresponding to the cell whose signal strength is greater than the preset threshold according to the received cell frequency point feedback. Cell frequency;

The determining module is further configured to determine the cell to be switched based on the received cell frequency when receiving the cell frequency fed back by the terminal;

A switching module, configured to switch the terminal to the determined cell.

Preferably, if the cell frequency points fed back by the terminal include multiple cell identities, the determining module includes:

A sorting unit, configured to prioritize the cells corresponding to the received cell identities;

The processing unit is configured to use a cell with a high priority as a cell to be handed over.

In the cell access method and device proposed by the present invention, the base station determines the cell to be accessed corresponding to the SPID according to the SPID corresponding to the terminal, and accesses it to the determined cell according to the specific request of the terminal, realizing The terminal determines different cells to be accessed, and accesses it to the corresponding cell according to the specific access request of the terminal, instead of allocating different types of terminals when receiving cell cut-in requests from various types of terminals Access to the cell requested by the terminal makes the access mode of the cell more flexible.

Description of drawings

FIG. 1 is a schematic flowchart of a first embodiment of a cell access method according to the present invention;

2 is a schematic flow diagram of a first embodiment of the base station according to the present invention accessing the terminal to the cell corresponding to the acquired cell identifier;

FIG. 3 is a schematic flow diagram of a second embodiment of the base station accessing the terminal to the cell corresponding to the acquired cell identifier according to the present invention;

FIG. 4 is a schematic flowchart of a second embodiment of a cell access method according to the present invention;

5 is a schematic flow diagram of a preferred embodiment of determining a cell to be handed over by the base station according to the present invention based on the received cell identifier;

FIG. 6 is a schematic diagram of functional modules of the first embodiment of the cell access device of the present invention;

FIG. 7 is a schematic diagram of functional modules of the first embodiment of the access module 30 in FIG. 6;

FIG. 8 is a schematic diagram of the functional modules of the second embodiment of the access module 30 in FIG. 6;

FIG. 9 is a schematic diagram of functional modules of a second embodiment of a cell access device according to the present invention;

FIG. 10 is a schematic diagram of functional modules of a preferred embodiment of the determining module 10 in FIG. 9 .

detailed description

It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The invention provides a cell access method.

Referring to FIG. 1 , FIG. 1 is a schematic flowchart of a first embodiment of a cell access method according to the present invention.

This embodiment proposes a cell access method, and the cell access method includes:

Step S10, upon receiving the cell access request sent by the terminal, the base station determines the service profile identifier SPID corresponding to the terminal;

In this embodiment, the terminals are preferably grouped according to the user identification information corresponding to the terminals to configure different service profile identifiers SPID, and the ways of configuring the SPID include the following: a. According to the operator identification information corresponding to the terminals Configure, that is, first determine the mobile network to which the terminal belongs through the MNC (Mobile Network Code, mobile network number) preset in the terminal user identification card, such as when the MNC value is 00 or 02, determine the If the end user is a user of China Mobile, configure a SPID for the end user of China Mobile. b. According to the unique identifier of the terminal, such as the range value corresponding to IMEI (International Mobile Equipment Identity, mobile equipment international identity code) or IMSI (Iinternational Mobile Subscriber Identity, international mobile subscriber identity code), for example, group the corresponding Terminals with IMEI numbers 1-1000 are divided into one group, terminals with IMEI numbers 1001-2000 are divided into another group, and a SPID is configured for each group of terminal users. For example, set the SPID value of mobile users to 1, the SPID value of Unicom users to 2, and the SPID value of telecom users to 3; or set the SPID value corresponding to end users whose IMEI number is 1-1000 to 4, 1001 The SPID value corresponding to the terminal user of -2000 is set to 5 and so on, then when the SPID value is obtained, the type to which the terminal user belongs can be determined.

In this embodiment, when receiving the cell access request sent by the terminal, the core network reports the SPID information of the terminal, and then the base station obtains the SPID corresponding to the terminal, and identifies the operator to which the terminal belongs according to the obtained SPID. The type of merchant or the group the user belongs to.

Step S20, according to the preset mapping relationship between the SPID and the cell ID, the base station acquires the cell ID corresponding to the determined SPID;

In this embodiment, it is preferable to configure different cell identities for each preset SPID value. For example, there are 5 cell identities corresponding to a terminal with an SPID value of 1, and it is preferred that each preset SPID value corresponds to a different cell id. The scheme is as follows: the base station configures the cell identification corresponding to each SPID value in the preset background database, that is, assigns the meaning of each SPID value to single or multiple cell identification information or cell frequency point information, for example, the corresponding SPID value The cell is set as a cell ID number or cell frequency point information, etc. After the configuration of the cell identity corresponding to the SPID value of the terminal is completed, the base station can determine the corresponding cell ID or cell frequency point information according to the SPID value. The specific process of this embodiment is as follows: when the base station receives the cell access request sent by the terminal, the base station obtains the SPID value of the terminal, first judges whether the obtained SPID value matches the SPID value preset by the base station according to the SPID value of the terminal, If not matched, the base station does not respond to the cell access request, and if matched, the base station obtains the cell ID corresponding to the SPID value, and uses the cell corresponding to the cell ID corresponding to the SPID value as a cell to be accessed.

Further, in order to improve the accuracy of cell access, the cell identification information corresponding to the SPID information preferably includes the frequency band information + frequency point information of the cell. It can be understood that the network spectrum includes information of multiple frequency bands, and each frequency band corresponds to The frequency points may be repeated. Therefore, in this embodiment, when the SPID value corresponding to each cell identification information can be configured in the background database, the cell identification information includes frequency band information + frequency point information. For example, the cells corresponding to the SPID value of 84 include: cell Q1 with frequency band 38+frequency point 2570, cell Q2 with frequency band 38+frequency point 2600, or cell Q3 with frequency band 41+frequency point 2552, then the user type information The cell mapped with SPID 84 includes 3 cells, namely Q1, Q2 and Q3.

Step S30, the base station accesses the terminal to the cell corresponding to the obtained cell identifier.

In this embodiment, when the obtained cell IDs are multiple cell IDs, the base station selects the cell corresponding to one of the cell IDs as the cell to be accessed in a preset manner, which can be accessed by the cell sent by the terminal. The request is determined, for example, determined according to the identification information of the corresponding cell to be accessed in the cell access request, which will be described in detail in the following embodiments.

In the cell access method proposed in this embodiment, the base station determines the cell to be accessed corresponding to the SPID according to the SPID corresponding to the terminal, and accesses the cell to the determined cell according to the specific request of the terminal, realizing the different SPID The terminal determines different cells to be accessed, and accesses it to the corresponding cell according to the specific access request of the terminal, instead of connecting different types of terminals when receiving cell cut-in requests from various types of terminals. Access to the cell requested by the terminal makes the access mode of the cell more flexible.

Further, in order to improve the flexibility of cell access, a second embodiment of the cell access method of the present invention is proposed based on the first embodiment. In this embodiment, referring to FIG. 2, the step S30 includes:

Step S31, the base station determines the identity of the corresponding cell to be accessed in the cell access request;

Step S32, the base station compares the identity of the cell to be accessed with the obtained cell identity;

Step S33, when the identifier of the cell to be accessed matches the obtained cell identifier, the base station accesses the terminal to the cell corresponding to the obtained cell identifier.

In this embodiment, when receiving the cell access request sent by the terminal, first determine the identifier of the cell to be accessed (such as the ID of the cell to be accessed or the frequency point of the cell) corresponding to the cell access request, and the base station obtains The identity of the cell to be accessed, and comparing the identity of the cell to be accessed with the cell identity corresponding to the obtained cell, and when it is detected that the identity of the cell matches the identity of the cell to be accessed, the base station immediately The matched cell can be used as the target cell, and the terminal is connected to the target cell. Further, when the cell access request does not include the identity of the cell to be accessed, at this time, the base station can select the cell to be accessed in a preset manner (such as a default cell), or the base station identifies the current cell as the cell to be accessed. The load status of the access cell or the priority of the network standard, the cell with a smaller load or the cell with a higher standard priority is used as the cell to be accessed.

Further, in order to improve the flexibility of cell access, in this embodiment, referring to FIG. 3 , after the step S32, the step S30 further includes:

Step S34, when the identity of the cell to be accessed does not match the obtained cell identity, the base station sends the cell frequency point corresponding to the obtained cell identity to the terminal, so that the terminal selects the corresponding cell frequency point according to the obtained cell frequency point Cells whose signal strength meets the preset conditions among the cells and feed back the cell access request;

In this embodiment, when the identity of the cell to be accessed sent by the terminal does not match the obtained cell identity, it means that the cell to be accessed by the terminal is not in the cell preset by the base station. In this embodiment, it is preferred that the base station release the air interface resources, and send the redirected frequency point to the terminal, that is, send the corresponding cell frequency point in the cell preset by the base station to the terminal, so that the terminal can select a cell frequency point among these cell frequency points sent by the base station as the to-be-accessed the frequency of the cell.

Step S35, upon receiving the cell access request fed back by the terminal, the base station accesses the terminal to a cell whose signal strength meets a preset condition.

In this embodiment, when the base station receives the cell access request fed back by the terminal, it can use the cell whose signal strength meets the preset condition as a target cell, and access the terminal to the target cell.

Further, in order to improve the flexibility of cell access, a third embodiment of the cell access method of the present invention is proposed based on the first embodiment. In this embodiment, referring to FIG. 4 , after the step S30, the cell access Entry methods include:

Step S40, if the terminal access is successful, the base station sends the cell frequency point corresponding to the SPID to the terminal, so that the terminal can correspond to the cell whose signal strength is greater than the preset threshold in the cell frequency point according to the received cell frequency point feedback. the frequency of the cell;

Step S50, when receiving the cell frequency point fed back by the terminal, the base station determines the cell to be switched based on the received cell frequency point;

In this embodiment, the triggering method of the cell switching request is that the base station sends a measurement frequency point after detecting the terminal access, and when the terminal moves, the terminal detects whether the signal of the cell under the frequency point satisfies the preset If the threshold is satisfied, the terminal reports the measurement information to the base station to initiate a cell handover request. Further, the signal strength of the cell carried in the measurement report reported by the terminal satisfies the preset threshold, and the base station determines the cell to be switched from among the received cells. According to the ranking results, the first cell is preferably selected as the target cell, and a handover request is initiated to the target cell, and the terminal information is told to the target cell. Cell judgment allows the terminal to notify the source base station after switching in, and the base station then sends a handover command (a reconfiguration message in the protocol) to the terminal to notify the terminal to switch to the target cell. When the handover request fails, it can also try to initiate a handover request to the second cell, and if it fails, it can initiate a handover request to other cells by analogy.

In the embodiment of the present invention, it is preferable that the base station sends measurement information according to the cell ID or cell frequency specified by the corresponding SPID value, so that the terminal can only switch to the preset cell, and the measurement information carries the frequency point of the cell to be switched by the terminal , when the terminal receives the cell frequency point, it is preferable to measure the cell signal corresponding to the cell frequency point through a preset application (such as a signal measuring instrument), and calculate the measured signal strength, when the terminal calculates the cell frequency point corresponding to If the signal strength is greater than a preset threshold (eg -80DB), the frequency point of the cell corresponding to the cell is sent to the base station. Furthermore, each measurement report reported by the terminal to the base station can only include multiple cells under one frequency point. If the terminal measures that the cells under multiple frequency points meet the preset threshold, multiple measurement reports are reported. In this case, the base station generally selects the handover target cell from the cells in the measurement report which is received first.

Step S60, the base station handovers the terminal to the determined cell.

In this embodiment, when the base station receives the cell frequency point fed back by the terminal, it determines whether the cell to be switched includes only one cell, and if so, the base station switches the terminal to the cell; According to the cell priority corresponding to each cell, the cell to be handed over by the terminal is determined. In this embodiment, the handover scenarios include S1 handover (that is, handover between base stations through the core network) and X2 handover (handover between base stations).

Further, in order to improve the flexibility of cell access, a third embodiment of the cell access method of the present invention is proposed based on the second embodiment. In this embodiment, if the cell frequency points fed back by the terminal include multiple cell identities, With reference to Fig. 5, described step S50 comprises:

Step S51, the base station prioritizes the cells corresponding to the received cell identifiers;

Step S52, the base station takes a cell with a higher priority as a cell to be handed over.

In this embodiment, the base station may first configure the priority level of each cell in the background database, and the way of configuring the priority level includes:

1) Mode 1. Define the parameters of the SPID information. Those skilled in the art can understand that the SPID defined by the protocol has two sets of value ranges, and one set of value ranges is 129 to 256, which is the value defined by the protocol and is used for For cell reselection and handover, a set of values ranges from 1 to 128. Since SPID can only carry one value, the functions of two SPIDs cannot be used at the same time. Therefore, the meaning of the preset SPID can be expanded at this time, so that the custom protocol SPID Can contain protocol-defined SPID functions. For example, when the protocol definition SPID value is 254, it means that the priority of the E-UTRAN system is low, the priority of the UTRAN system is medium, and the priority of the GERAN system is high. In this embodiment, it is preferably in the background configuration table of the preset SPID Add parameters, for example: set the system priority of cell Q1 to high, the system priority of cell Q2 to medium, and the system priority of cell Q3 to low, when the cell corresponding to the identification information of the cell to be switched sent by the terminal includes multiple At this time, according to the standard priority preset by each cell, the base station can use the cell with higher priority as the target cell, and handover the terminal to the target cell.

Further, the priority of the cell can also be judged according to the current network load of the cell. For example, the base station detects the current network load of each cell to be switched, and uses the cell with the smaller load as the target cell to switch the terminal to the target cell.

The present invention further provides a cell access device.

Referring to FIG. 6 , FIG. 6 is a schematic diagram of functional modules of a first embodiment of a cell access device according to the present invention.

It should be emphasized that, for those skilled in the art, the functional block diagram shown in FIG. 6 is only an example diagram of a preferred embodiment. Those skilled in the art focus on the functional modules of the cell access device shown in FIG. 6 , New functional modules can be easily supplemented; the names of each functional module are self-defined names, which are only used to assist in understanding each program function block of the cell access device, and are not used to limit the technical solution of the present invention. The technical solution of the present invention The core is the function to be achieved by each function module with a custom name.

This embodiment proposes a cell access device, and the cell access device includes:

The determining module 10 is configured to determine the service profile identifier SPID corresponding to the terminal when receiving the cell access request sent by the terminal;

In this embodiment, the terminals are preferably grouped according to the user identification information corresponding to the terminals to configure different service profile identifiers SPID, and the ways of configuring the SPID include the following: a. According to the operator identification information corresponding to the terminals Configure, that is, the determination module 10 first determines the mobile network to which the terminal belongs through the MNC (Mobile Network Code, mobile network number) preset in the terminal user identification card, such as when the MNC value is 00 or 02 When it is determined that the terminal user belongs to China Mobile, a SPID is configured for the China Mobile terminal user. b. According to the unique identifier of the terminal, such as the range value corresponding to IMEI (International Mobile Equipment Identity, mobile equipment international identity code) or IMSI (Iinternational Mobile Subscriber Identity, international mobile subscriber identity code), for example, group the corresponding Terminals with IMEI numbers 1-1000 are divided into one group, terminals with IMEI numbers 1001-2000 are divided into another group, and a SPID is configured for each group of terminal users. For example, set the SPID value of mobile users to 1, the SPID value of Unicom users to 2, and the SPID value of telecom users to 3; or set the SPID value corresponding to end users whose IMEI number is 1-1000 to 4, 1001 The SPID value corresponding to the terminal user of -2000 is set to 5, etc., then when the SPID value is obtained, the determination module 10 can determine the type of terminal user.

In this embodiment, when receiving the cell access request sent by the terminal, the core network reports the SPID information of the terminal, and then the determination module 10 acquires the SPID corresponding to the terminal, and identifies the terminal according to the acquired SPID The operator type to which the user belongs or the group to which the user belongs.

The acquiring module 20 is configured to acquire the cell ID corresponding to the determined SPID according to the preset mapping relationship between the SPID and the cell ID;

In this embodiment, it is preferable to configure different cell identities for each preset SPID value. For example, there are 5 cell identities corresponding to a terminal with an SPID value of 1, and it is preferred that each preset SPID value corresponds to a different cell id. The scheme is as follows: the base station configures the cell identification corresponding to each SPID value in the preset background database, that is, assigns the meaning of each SPID value to single or multiple cell identification information or cell frequency point information, for example, the corresponding SPID value The cell is set as a cell ID number or cell frequency point information, etc. After the configuration of the cell identity corresponding to the SPID value of the terminal is completed, the determination module 10 can determine the corresponding cell ID or cell frequency point information according to the SPID value. The specific process of this embodiment is as follows: when the base station receives the cell access request sent by the terminal, the acquisition module 20 acquires the SPID value of the terminal, and first judges whether the acquired SPID value is consistent with the preset value of the base station according to the SPID value of the terminal. The SPID value matches, if it does not match, the base station does not respond to the cell access request, if it matches, the base station obtains the cell ID corresponding to the SPID value, and uses the cell corresponding to the cell ID corresponding to the SPID value as the cell to be accessed .

Further, in order to improve the accuracy of cell access, the cell identification information corresponding to the SPID information preferably includes the frequency band information + frequency point information of the cell. It can be understood that the network spectrum includes information of multiple frequency bands, and each frequency band corresponds to The frequency points may be repeated. Therefore, in this embodiment, when the SPID value corresponding to each cell identification information can be configured in the background database, the cell identification information includes frequency band information + frequency point information. For example, the cells corresponding to the SPID value of 84 include: cell Q1 with frequency band 38+frequency point 2570, cell Q2 with frequency band 38+frequency point 2600, or cell Q3 with frequency band 41+frequency point 2552, then the user type information The cell mapped with SPID 84 includes 3 cells, namely Q1, Q2 and Q3.

The access module 30 is configured to access the terminal to the cell corresponding to the acquired cell identifier.

In this embodiment, when the obtained cell IDs are multiple cell IDs, the access module 30 selects the cell corresponding to one of the cell IDs as the cell to be accessed in a preset manner, and the preset method can be terminal The sent cell access request is determined, for example, determined according to the identification information of the corresponding cell to be accessed in the cell access request, which will be described in detail in the following embodiments.

In the cell access device proposed in this embodiment, the base station determines the cell to be accessed corresponding to the SPID according to the SPID corresponding to the terminal, and accesses it to the determined cell according to the specific request of the terminal, realizing the different SPIDs according to different SPIDs. The terminal determines different cells to be accessed, and accesses it to the corresponding cell according to the specific access request of the terminal, instead of connecting different types of terminals when receiving cell cut-in requests from various types of terminals. Access to the cell requested by the terminal makes the access mode of the cell more flexible.

Further, in order to improve the flexibility of cell access, a second embodiment of the cell access method of the present invention is proposed based on the first embodiment. In this embodiment, referring to FIG. 7, the access module 30 includes:

A determining unit 31, configured to determine the identity of the corresponding cell to be accessed in the cell access request;

A comparing unit 32, configured to compare the identity of the cell to be accessed with the obtained cell identity;

The first accessing unit 33 is configured to, when the identifier of the cell to be accessed matches the acquired cell identifier, access the terminal to the cell corresponding to the acquired cell identifier.

In this embodiment, when receiving the cell access request sent by the terminal, the determining unit 31 first determines the identifier of the cell to be accessed (such as the ID of the cell to be accessed or the frequency of the cell to be accessed) in the cell access request. point), the base station acquires the identity of the cell to be accessed, and the comparison unit 32 compares the identity of the cell to be accessed with the cell identity corresponding to the obtained cell, and when the identity of the cell to be accessed is detected and When the identifiers of the access cells match, the first access unit 33 can use the matched cell as the target cell, and access the terminal to the target cell. Further, when the cell access request does not include the identity of the cell to be accessed, at this time, the cell to be accessed can be selected according to a preset method (such as a default cell), or, firstly, the cell to be accessed can be identified as the cell to be accessed. According to the load status of the incoming cell or the priority of the network standard, the cell with a smaller load or a cell with a higher standard priority is used as the cell to be accessed.

Further, in order to improve the flexibility of cell access, referring to FIG. 8, in this embodiment, the access module 30 further includes:

A sending unit 34, configured to send a cell frequency point corresponding to the obtained cell identity to the terminal when the identity of the cell to be accessed does not match the obtained cell identity, so that the terminal selects a cell frequency point according to the obtained cell frequency point. In the cell corresponding to the point, the signal strength meets the preset condition and feedback the cell access request;

In this embodiment, when the identity of the cell to be accessed sent by the terminal does not match the obtained cell identity, it means that the cell to be accessed by the terminal is not in the cell preset by the base station. In this embodiment, the sending The unit 34 releases the air interface resources, and sends the redirection frequency point to the terminal, that is, sends the corresponding cell frequency point in the preset cell to the terminal, so that the terminal can select one of these cell frequency points sent by the sending unit 34 The cell frequency is used as the frequency of the cell to be accessed.

The second access unit 35 is configured to, when receiving a cell access request fed back by the terminal, access the terminal to a cell whose signal strength meets a preset condition.

In this embodiment, when receiving the cell access request fed back by the terminal, the second access unit 35 can set the cell whose signal strength meets the preset condition as the target cell, and connect the terminal to to the target cell.

Further, in order to improve the flexibility of cell access, a second embodiment of the cell access device of the present invention is proposed based on the first embodiment. In this embodiment, referring to FIG. 8, the cell access device further includes:

The sending module 40 is configured to send the cell frequency point corresponding to the SPID to the terminal if the terminal access is successful, so that the terminal receives the corresponding cell corresponding to the cell whose signal strength is greater than the preset threshold in the cell frequency point according to the received cell frequency point feedback the frequency of the cell;

The determining module 10 is further configured to determine the cell to be switched based on the received cell frequency when receiving the cell frequency fed back by the terminal;

In this embodiment, the cell switching request is triggered by issuing a measurement frequency point after detecting terminal access, and when the terminal moves, the terminal detects whether the signal of the cell under the frequency point meets a preset threshold, If satisfied, the terminal reports the measurement information to the base station to initiate a cell handover request. Further, the signal strength of the cell carried in the measurement report reported by the terminal satisfies a preset threshold, and the determination module 10 determines the cell to be switched among the received cells, and the method for determining the cell to be switched by the determination module 10 is preferably based on the method reported by the terminal. The cells are sorted according to the system priority, signal strength, network resource load and other factors of each cell, and the first cell is preferably used as the target cell according to the sorting result, and the sending module 40 initiates a handover request to the target cell, The information of the terminal is told to the target cell, and the target cell judges that the terminal can switch in to notify the source base station, and the sending module 40 sends a switching command (a reconfiguration message in the protocol) to the terminal to notify the terminal to switch to the target cell. When the handover request fails, it can also try to initiate a handover request to the second cell, and if it fails, it can initiate a handover request to other cells by analogy.

In the embodiment of the present invention, it is preferable that the sending module 40 sends measurement information according to the cell ID or cell frequency specified by the corresponding SPID value, so that the terminal can only switch to the preset cell, and the measurement information carries the terminal to be switched The frequency point of the cell. When the terminal receives the frequency point of the cell, it is preferable to measure the cell signal corresponding to the cell frequency point through a preset application (such as a signal measuring instrument), and calculate the strength of the measured signal. When the terminal calculates the cell If the signal strength corresponding to the frequency point is greater than a preset threshold (eg -80DB), the cell frequency point corresponding to the cell is sent to the determination module 10 . The measurement report reported by the terminal to the determination module 10 each time can only include multiple cells under one frequency point, and if the terminal measures that the cells under multiple frequency points meet the preset threshold, then report multiple measurement reports , in this case, the determination module 10 generally selects the handover target cell from the cells in the measurement report which is received first.

A switching module 50, configured to switch the terminal to the determined cell.

In this embodiment, the determining module 10 determines whether the cell to be switched includes only one cell when receiving the cell frequency fed back by the terminal, and if so, the switching module 50 switches the terminal to the cell If not, it is necessary to determine the cell to be handed over to by the terminal according to the cell priority corresponding to each cell. In this embodiment, the handover scenarios include S1 handover (that is, handover between base stations through the core network) and X2 handover (handover between base stations). .

Further, in order to improve the flexibility of cell access, a third embodiment of the cell access device of the present invention is proposed based on the second embodiment. In this embodiment, referring to FIG. 10, if the cell frequency points fed back by the terminal include multiple During the cell identity, the determining module 10 includes:

A sorting unit 11, configured to prioritize the cells corresponding to the received cell identifiers;

The processing unit 12 is configured to use a cell with a high priority as a cell to be handed over.

In this embodiment, the base station may first configure the priority level of each cell in the background database, and the way of configuring the priority level includes:

1) Mode 1. Define the parameters of the SPID information. Those skilled in the art can understand that the SPID defined by the protocol has two sets of value ranges, and one set of value ranges is 129 to 256, which is the value defined by the protocol and is used for For cell reselection and handover, a set of values ranges from 1 to 128. Since SPID can only carry one value, the functions of two SPIDs cannot be used at the same time. Therefore, the meaning of the preset SPID can be expanded at this time, so that the custom protocol SPID Can contain protocol-defined SPID functions. For example, when the protocol definition SPID value is 254, it means that the priority of the E-UTRAN system is low, the priority of the UTRAN system is medium, and the priority of the GERAN system is high. In this embodiment, it is preferably in the background configuration table of the preset SPID Add parameters, for example: set the system priority of cell Q1 to high, the system priority of cell Q2 to medium, and the system priority of cell Q3 to low, when the cell corresponding to the identification information of the cell to be switched sent by the terminal includes multiple When there are two cells, at this time, the judging unit 11 can use the cell with high priority as the target cell according to the standard priority preset by each cell, and the switching module 50 switches the terminal to the target cell.

Further, the cell priority can also be judged according to the current network load of the cell, such as detecting the current network load of each cell to be handed over, the processing unit 12 takes the cell with a smaller load as the target cell, and the The switching module 50 switches the terminal to the target cell.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or system comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or system. Without further limitations, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article or system comprising that element.

The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products are stored in a storage medium (such as ROM/RAM, disk, CD) contains several instructions to make a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in various embodiments of the present invention.

The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields , are all included in the scope of patent protection of the present invention in the same way.

Claims (10)

1. A cell access method, characterized in that, the cell access method comprises the following steps: When receiving the cell access request sent by the terminal, the base station determines the service profile identifier SPID corresponding to the terminal; According to the preset mapping relationship between the SPID and the cell identifier, the base station acquires the cell identifier corresponding to the determined SPID; The base station accesses the terminal to the cell corresponding to the acquired cell identifier. 2. The cell access method according to claim 1, wherein the step of the base station connecting the terminal to the cell corresponding to the acquired cell identity comprises: The base station determines the identity of the corresponding cell to be accessed in the cell access request; The base station compares the identity of the cell to be accessed with the obtained cell identity; When the identifier of the cell to be accessed matches the obtained cell identifier, the base station accesses the terminal to the cell corresponding to the obtained cell identifier. 3. The cell access method according to claim 2, after the base station compares the identity of the cell to be accessed with the obtained cell identity, the cell access method further comprises: When the identity of the cell to be accessed does not match the obtained cell identity, the base station sends the cell frequency point corresponding to the obtained cell identity to the terminal, so that the terminal selects the cell corresponding to the cell frequency point according to the obtained cell frequency point Cells whose signal strength meets the preset conditions and feed back cell access requests; When receiving the cell access request fed back by the terminal, the base station accesses the terminal to a cell whose signal strength meets a preset condition. 4. The cell access method according to claim 1, characterized in that, after the base station accesses the terminal to the cell corresponding to the acquired cell ID, the cell access method comprises: If the terminal access is successful, the base station sends the cell frequency point corresponding to the SPID to the terminal, so that the terminal receives the cell frequency point corresponding to the cell whose signal strength is greater than the preset threshold in the cell frequency points according to the received cell frequency point feedback. point; When receiving the cell frequency point fed back by the terminal, the base station determines the cell to be switched based on the received cell frequency point; The base station switches the terminal to the determined cell. 5. The cell access method according to claim 4, wherein if the cell frequency point fed back by the terminal includes multiple cell identities, the step of determining the cell to be handed over by the base station based on the received cell identities comprises: The base station prioritizes the cells corresponding to the received cell identifiers; The base station uses a cell with a high priority as a cell to be handed over. 6. A cell access device, characterized in that the cell access device comprises: A determining module, configured to determine the service profile identifier SPID corresponding to the terminal when receiving the cell access request sent by the terminal; An acquisition module, configured to acquire the cell identity corresponding to the determined SPID according to the preset mapping relationship between the SPID and the cell identity; An access module, configured to connect the terminal to the cell corresponding to the acquired cell identifier. 7. The cell access device according to claim 6, wherein the access module comprises: A determining unit, configured to determine the identity of the corresponding cell to be accessed in the cell access request; A comparing unit, configured to compare the identity of the cell to be accessed with the obtained cell identity; The first accessing unit is configured to, when the identifier of the cell to be accessed matches the acquired cell identifier, access the terminal to the cell corresponding to the acquired cell identifier. 8. The cell access device according to claim 7, wherein the access module further comprises: A sending unit, configured to send a cell frequency point corresponding to the obtained cell identity to the terminal when the cell identity to be accessed does not match the obtained cell identity, so that the terminal selects a cell frequency point according to the obtained cell frequency point Cells whose signal strength meets the preset conditions in the corresponding cells and feed back cell access requests; The second accessing unit is configured to, when receiving a cell access request fed back by the terminal, access the terminal to a cell whose signal strength meets a preset condition. 9. The cell access device according to claim 6, further comprising: The sending module is configured to send the cell frequency point corresponding to the SPID to the terminal if the terminal access is successful, so that the terminal receives the cell frequency point corresponding to the cell whose signal strength is greater than the preset threshold according to the received cell frequency point feedback. Cell frequency; The determining module is further configured to determine the cell to be switched based on the received cell frequency when receiving the cell frequency fed back by the terminal; A switching module, configured to switch the terminal to the determined cell. 10. The cell access device according to claim 9, wherein if the cell frequency point fed back by the terminal includes multiple cell identities, the determining module includes: A sorting unit, configured to prioritize the cells corresponding to the received cell identities; The processing unit is configured to use a cell with a high priority as a cell to be handed over.