CN104320799B - A kind of cell parameter configuration method and device - Google Patents
A kind of cell parameter configuration method and device Download PDFInfo
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Abstract
The present invention relates to mobile communication technology field, the embodiment of the present invention provides a kind of cell parameter configuration method and device, base station is when configuring cell parameter, cell parameter configuring request is sent to base station cell parameter controller, time sequencing of the base station cell parameter controller to the base station in its coverage according to request, is handled one by one.Base station cell parameter controller obtains carries out the cell parameter that the adjacent base station of cell parameter configuration is configured simultaneously with the base station, the cell parameter that base station cell parameter controller is configured the adjacent base station is that the base station configures cell parameter after excluding, or the base station is notified, so that the base station excludes the cell parameter when configuring cell parameter.By this method, multiple base stations can be avoided when the same time configuring cell parameter due to being configured with identical cell parameter, the problem of causing to interfere with each other.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a cell parameter configuration method and apparatus.
Background
The femtocell is generally deployed in areas such as homes, hotels or factories, has the characteristics of small coverage area, numerous quantity, unfixed deployment ground and the like, and requires a Self-Organizing Network (SON) technology to support so as to reduce Network maintenance cost and improve automatic configuration capability of cell parameters.
The problem of cell parameter configuration conflict exists when a plurality of femtocell are started simultaneously, and the simultaneous starting of a plurality of femtocell is a very common phenomenon, and can be specifically divided into the following cases: 1) due to the randomness of the user behaviors, the starting or restarting behaviors of the home base station are random, and the problem of starting the home base stations at the same time is inevitable; 2) after the power failure of the residential building, the simultaneous recovery of the power supply will lead to the simultaneous startup of a large number of home base stations; 3) when large-scale networking is carried out, the problem that a plurality of home base stations are started simultaneously or similarly and simultaneously when the plurality of home base stations are installed simultaneously is solved; 4) when the home base stations of the same manufacturer are periodically restarted, a large number of base stations are simultaneously started.
When the femtocell A is powered on and started, the wireless environment needs to be monitored and sensed and the base station parameter configuration is finally completed, the whole process can be completed within minutes, and during the period, the radio frequency device is not started by the femtocell A, namely, the neighborhood cannot sense the existence of the cell A. If the femtocell B adjacent to the geographical position of a is started or restarted at this time, the radio environments intercepted by a and B are approximately the same due to the adjacent geographical positions, and the cell parameter configuration conflicts of a and B will be caused as B does not detect the existence of the cell a. For a GSM (Global System for Mobile Communication) System and a TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) System, the same operating frequency point may be configured, and for an LTE (Long Term Evolution) System, the same PCI (Physical Cell Identity) may be configured, which causes PCI collision and finally causes strong interference between two home base stations. Such phenomena will be present in large numbers in existing networks.
In summary, in the prior art, when neighboring femtocells start simultaneously, the same cell parameter is configured, which causes interference between neighboring femtocells.
Disclosure of Invention
The embodiment of the invention provides a cell parameter configuration method and a cell parameter configuration device, which are used for solving the problem that when adjacent home base stations are started simultaneously in the prior art, the same cell parameters are configured, so that interference is generated between the adjacent home base stations.
The cell parameter configuration method provided by the embodiment of the invention comprises the following steps:
after receiving a cell parameter configuration request sent by a first base station, a base station cell parameter controller acquires a history record of the cell parameter configuration request stored by the base station cell parameter controller;
the base station cell parameter controller determines whether a cell parameter configuration request sent by a second base station is received within a preset time length before the cell parameter configuration request is received according to the stored history of the cell parameter configuration request, wherein the second base station is an adjacent base station of the first base station; wherein the number of the second base stations is one or more;
if so, the base station cell parameter controller sends a notification message to the first base station, wherein the notification message carries the cell parameters configured by the second base station, and the notification message is used for indicating that the first base station excludes the cell parameters configured by the second base station when configuring the cell parameters; or, after excluding the cell parameter configured by the second base station, the base station cell parameter controller configures the cell parameter for the first base station, and sends the configured cell parameter to the first base station.
Preferably, the method further comprises:
if the cell parameter controller of the base station receives the cell parameter configuration request sent by the second base station within a preset time length before receiving the cell parameter configuration request sent by the first base station, but the second base station is not a neighboring base station of the first base station, then: the base station cell parameter controller sends a notification message to the first base station, wherein the notification message carries the cell parameters configured by the second base station, and the notification message is used for indicating the first base station to set the priority of the cell parameters configured by the second base station to be the lowest; or,
and after setting the priority of the cell parameter configured by the second base station to be the lowest, the base station cell parameter controller configures the cell parameter for the first base station and sends the configured cell parameter to the first base station.
Preferably, the preset time length is a time length required from power-on to turning on of the downlink radio frequency device when the first base station is started.
Preferably, if the base station cell parameter controller determines that the second base station satisfies the following conditions, it is determined that the second base station is a neighboring base station of the first base station:
the adjacent area list of the second base station and the adjacent area list of the first base station have intersection; or,
the distance between the second base station and the first base station is less than twice the power coverage radius of the first base station.
The embodiment of the invention also discloses a cell parameter configuration method, which comprises the following steps:
a first base station sends a first cell parameter configuration request to a base station cell parameter controller;
the first base station receives a notification message returned by the base station cell parameter controller according to the cell parameter configuration request;
if the notification message indicates that the first base station excludes the cell parameters configured by the second base station from the candidate cell parameters, the first base station performs cell parameter configuration after excluding the cell parameters configured by the second base station, and sends the configured cell parameters to the base station cell parameter controller; if the notification message indicates the cell parameter configured by the first base station, the first base station performs cell parameter configuration according to the cell parameter indicated by the notification message; wherein the number of the second base stations is one or more.
Preferably, if the notification message indicates that the first base station sets the priority of the cell parameter configured by the second base station to be the lowest, the first base station performs cell parameter configuration after setting the priority of the cell parameter configured by the second base station to be the lowest.
The embodiment of the invention provides a cell parameter configuration device, which comprises:
the device comprises an acquisition unit, a parameter configuration unit and a parameter configuration unit, wherein the acquisition unit is used for acquiring the history of the cell parameter configuration request stored by a cell parameter controller of a base station after receiving the cell parameter configuration request sent by a first base station;
a determining unit, configured to determine, according to the stored history of the cell parameter configuration request, whether to receive a cell parameter configuration request sent by a second base station within a preset time length before the cell parameter configuration request is received, where the second base station is a neighboring base station of the first base station; wherein the number of the second base stations is one or more; if so, sending a notification message to the first base station, wherein the notification message carries the cell parameters configured by the second base station, and the notification message is used for indicating that the cell parameters configured by the second base station are excluded when the first base station configures the cell parameters; or, after excluding the cell parameter configured by the second base station, configuring the cell parameter for the first base station, and sending the configured cell parameter to the first base station.
Preferably, the determining unit is further configured to:
if the cell parameter configuration request sent by the second base station is received within a preset time length before the cell parameter configuration request sent by the first base station is received, but the second base station is not a neighboring base station of the first base station, then: sending a notification message to the first base station, where the notification message carries the cell parameter configured by the second base station, and the notification message is used to instruct the first base station to set the priority of the cell parameter configured by the second base station to be the lowest; or,
and after the priority of the cell parameters configured by the second base station is set to be the lowest, the cell parameters are configured for the first base station, and the configured cell parameters are sent to the first base station.
Preferably, the preset time length is a time length required from power-on to turning on of the downlink radio frequency device when the first base station is started.
Preferably, the determining unit is further configured to:
if the first base station and the second base station meet the following conditions, determining that the second base station is a neighboring base station of the first base station:
the adjacent area list of the second base station and the adjacent area list of the first base station have intersection; or,
the distance between the second base station and the first base station is less than twice the power coverage radius of the first base station.
The embodiment of the invention also provides a cell parameter configuration device, which comprises:
a sending unit, configured to send a first cell parameter configuration request to a base station cell parameter controller;
a configuration unit, configured to receive a notification message returned by the base station cell parameter controller according to the cell parameter configuration request; if the notification message indicates that the first base station excludes the cell parameters configured by the second base station from the candidate cell parameters, the first base station performs cell parameter configuration after excluding the cell parameters configured by the second base station, and sends the configured cell parameters to the base station cell parameter controller; if the notification message indicates the cell parameter configured by the first base station, the first base station performs cell parameter configuration according to the cell parameter indicated by the notification message; wherein the number of the second base stations is one or more.
Preferably, the configuration unit is further configured to:
if the notification message indicates that the first base station sets the priority of the cell parameter configured by the second base station to be the lowest, the cell parameter configuration is performed after the priority of the cell parameter configured by the second base station is set to be the lowest.
According to the method and the device provided by the embodiment of the invention, when the base station configures the cell parameters, the base station sends the cell parameter request to the cell parameter controller of the base station, and the cell parameter controller of the base station processes the base stations in the coverage area one by one according to the time sequence of the request. The base station cell parameter controller obtains the cell parameters configured by the adjacent base station which performs cell parameter configuration with the base station at the same time, and the base station cell parameter controller excludes the cell parameters configured by the adjacent base station and configures the cell parameters for the base station, or notifies the base station so that the base station excludes the cell parameters when configuring the cell parameters. By the method, the problem of mutual interference caused by the configuration of the same cell parameters when a plurality of base stations configure the cell parameters at the same time can be avoided.
Drawings
Fig. 1 is a flowchart of a cell parameter configuration method according to an embodiment of the present invention;
fig. 2 is a flowchart of another cell parameter configuration method according to an embodiment of the present invention;
fig. 3 is a structural diagram of a cell parameter configuration apparatus according to an embodiment of the present invention;
fig. 4 is a structural diagram of another cell parameter configuration apparatus according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a flowchart of a cell parameter configuration method provided in an embodiment of the present invention includes:
step 101: after receiving a cell parameter configuration request sent by a first base station, a base station cell parameter controller acquires a history record of the cell parameter configuration request stored by the base station cell parameter controller;
step 102: the base station cell parameter controller determines whether a cell parameter configuration request sent by a second base station is received within a preset time length before the cell parameter configuration request is received according to the stored history of the cell parameter configuration request, wherein the second base station is an adjacent base station of the first base station; wherein the number of the second base stations is one or more;
step 103: if so, the base station cell parameter controller sends a notification message to the first base station, wherein the notification message carries the cell parameters configured by the second base station, and the notification message is used for indicating that the first base station excludes the cell parameters configured by the second base station when configuring the cell parameters; or, after excluding the cell parameter configured by the second base station, the base station cell parameter controller configures the cell parameter for the first base station, and sends the configured cell parameter to the first base station.
In the embodiment of the present invention, the first base station or the second base station includes, but is not limited to, a home base station, a micro base station, a pico base station, and other low power base stations. The first base station generally refers to a home base station, a micro base station, a pico base station, and other low power base stations which are configuring cell parameters, and the second base station generally refers to a home base station, a micro base station, a pico base station, and other low power base stations which have configured cell parameters but have not turned on radio frequency devices. The base station cell parameter controller may be a separate device or may be integrated in the base station.
When the first base station is started, the first base station firstly monitors surrounding wireless environment information and sends a cell parameter configuration request to a base station cell parameter controller. The configured cell parameters are typically one or more of the following: frequency points; CI (Cell identity); physical layer cell identity PCI; BSIC (Base Station Identity Code); and (4) scrambling.
The first base station decides which cell parameters to configure according to the communication system in which it is operating. For example, for a GSM system, the cell parameters configured by the first base station are a BCCH (Broadcast Control Channel) frequency point and BSIC; for the TD-SCDMA system, the configured cell parameters are a main frequency point and a scrambling code; for the LTE system, the configured cell parameters are frequency points and PCIs.
The wireless environment information sensed by the first base station includes neighboring cell information of a cell belonging to the same communication system or different communication systems with the first base station, and the neighboring cell information includes, but is not limited to, CI, and a frequency point, a scrambling code, BSIC, and the like configured by the cell. The geographical location information of the first base station may also be included in the wireless environment information. The geographical location information of the first base station may further include height information of a transmitting antenna of the first base station, and the information may be reported to the base station cell parameter controller as a static configuration parameter of the first base station together with the cell parameter configuration request message.
After receiving a cell parameter configuration request sent by a first base station, a base station cell parameter controller acquires a history record of the cell parameter configuration request stored by the base station cell parameter controller. The history of the cell parameter configuration requests includes all cell parameter configuration requests received by the base station cell parameter controller.
The base station cell parameter controller preferentially processes the cell parameter configuration request received first according to the time of the received cell parameter configuration request, simultaneously processes one cell parameter configuration request each time and records the configured cell parameters for screening of a first base station which is not configured with the cell parameters, and the method can ensure that the first base station and a second base station which is started at the same time can not repeat the configured cell parameters when the first base station is configured with the cell parameters.
After receiving a cell parameter configuration request sent by a first base station, a base station cell parameter controller compares the cell parameter configuration request with a stored cell parameter configuration request sent by a second base station, judges whether the cell parameter configuration request sent by the second base station is received within a preset time length before the cell parameter configuration request sent by the first base station is received, and determines that the second base station is an adjacent base station of the first base station; wherein the number of the second base stations is one or more. Preferably, the preset time length is a time length required from power-on to turning on of the downlink radio frequency device when the first base station is started, and in order to reduce misjudgment, a time delay of cell parameter configuration request processing, a link time delay from the home base station to the base station cell parameter controller, and the like may be added on the basis of the preset time length to perform correction.
The base station cell parameter controller determines that at least one second base station also sends a cell parameter configuration request within the preset time length, and at this time, the base station cell parameter controller can determine that the first base station and the second base station are powered on and started at the same time. When the first base station and the second base station which are started simultaneously configure the cell parameters, the configured cell parameters may be the same. The first base station and the second base station configured with the same cell parameters will interfere with each other if the second base station is a neighboring base station of the first base station.
In order to avoid this situation, at this time, the base station cell parameter controller may send a notification message to the first base station, where the notification message carries the cell parameter configured by the second base station, and the notification message is used to indicate that the first base station excludes the cell parameter configured by the second base station when configuring the cell parameter; or, after excluding the cell parameters configured by the second base station, the base station cell parameter controller configures the cell parameters for the first base station and sends the configured cell parameters to the first base station.
If the second base station is not a neighboring base station of the first base station, the first base station and the second base station configured with the same cell parameter will not interfere with each other theoretically, and at this time, the first base station may configure the cell parameter already configured by the second base station.
The first base station can sense a plurality of cell parameters which accord with the working conditions of the first base station when the cell parameters are configured. The first base station divides the cell parameters into a plurality of priorities according to factors such as interception level, working frequency, interference strength and the like, selects an optimal cell parameter, and sets the priority of the cell parameter configured by the second base station to be the lowest in order to avoid unnecessary interference.
Specifically, the base station cell parameter controller sends a notification message to the first base station, where the notification message carries the cell parameters configured by the second base station, and the notification message is used to instruct the first base station to set the priority of the cell parameters configured by the second base station to be the lowest; or,
and after setting the priority of the cell parameters configured by the second base station to be the lowest, the base station cell parameter controller configures the cell parameters for the first base station, sends the configured cell parameters to the first base station and sends the configured cell parameters to the first base station.
Or after dividing the intercepted cell parameters into a plurality of priorities according to factors such as interception level, working frequency, interference intensity and the like, the base station cell parameter controller determines the priority of the cell parameters configured by the second base station, then resets the priority of the cell parameters configured by the second base station and the priority of the cell parameters below the priority of the cell parameters to be lower than the original priority by one level, configures the cell parameters for the first base station according to the reconfigured cell parameter priority, and sends the configured cell parameters to the first base station. For example, the cell parameters A, B, C and D have priorities of first, second, and third priorities, respectively, and B is a cell parameter used by the second base station, and then the priorities of A, B, C and D are reset to the first, second, third, and fourth priorities, respectively.
How to determine the second base station as a neighbor base station of the first base station is described in detail below.
If the base station cell parameter controller determines that the second base station meets any one of the following conditions, determining that the second base station is a neighboring base station of the first base station:
condition one, the adjacent area list of the first base station and the adjacent area list of the second base station have intersection
The above neighbor cell list generally refers to a handover neighbor cell list, and a reselection neighbor cell list may also be used as a reference, and is hereinafter referred to as a neighbor cell list.
In different communication systems, the condition for determining that the neighbor list of the first base station and the neighbor list of the second base station have intersection is also different.
For example, in the GSM system, the condition that the neighbor list of the first base station and the neighbor list of the second base station intersect with each other is any of the following:
1) cells with equal BCCH frequency points and BSIC exist in the neighbor cell lists of the first base station and the second base station;
2) the first base station and the second base station have cells with equal BCCH frequency points and BSIC in the adjacent cell lists, and the cells are in-network cells, namely the cells are in the coverage of a base station cell parameter controller or integrated with the base station cell parameter controller, and are referred to as in-network cells in the following;
3) cells with the same CI exist in the neighbor cell lists of the first base station and the second base station;
4) the neighbor cell lists of the first base station and the second base station have cells with the same CI, and the cells are intra-network cells.
For another example, in the LTE system, the condition that the neighboring list of the first base station intersects with the neighboring list of the second base station is any one of the following conditions:
1) the neighbor cell lists of the first base station and the second base station have cells with equal frequency points and PCI;
2) the neighbor cell lists of the first base station and the second base station have cells with equal frequency points and PCI, and the cells are cells in the network;
3) the first base station and the second base station have cells with equal E-UTRAN cell global Identity (ECGI for short) in the adjacent cell lists;
4) and the first base station and the second base station have cells with the same ECGI in the neighbor cell lists, and the cells are cells within the coverage range of the base station cell parameter controller or cells within the coverage range of the base station integrated with the base station cell parameter controller.
The condition that the neighbor list of the first base station and the neighbor list of the second base station in other communication systems intersect is similar to the above description, and is not repeated herein.
Second, the distance between the first base station and the second base station is less than twice of the power coverage radius of the first base station
The distance between the first base station and the second base station is a geometric distance calculated according to the longitude and latitude of the first base station, the antenna height of the first base station, the longitude and latitude of the second base station, and the antenna height of the second base station. A correction distance can be added on the basis of twice the power coverage radius of the first base station, and the specific correction distance is determined by actual conditions.
As shown in fig. 2, an embodiment of the present invention provides another cell parameter configuration method, where the method includes:
step 201, a first base station sends a first cell parameter configuration request to a base station cell parameter controller;
when the first base station is started, the first base station firstly monitors the surrounding wireless environment information, determines which cell parameter to configure according to the working communication system, and sends a cell parameter configuration request to the base station cell parameter controller. The configured cell parameters are the same as described in the above method.
Step 202, the first base station receives a notification message returned by the base station cell parameter controller according to the cell parameter configuration request;
after receiving a cell parameter configuration request sent by a first base station, a base station cell parameter controller judges whether a cell parameter configuration request sent by a second base station is received within a preset time length before the cell parameter configuration request sent by the first base station is received, and determines that the second base station is an adjacent base station of the first base station; wherein the number of the second base stations is one or more. And according to different judgment results, the returned notification message instructs the first base station to implement different operations.
Step 203, if the notification message indicates that the first base station excludes the cell parameter configured by the second base station from the candidate cell parameters, the first base station performs cell parameter configuration after excluding the cell parameter configured by the second base station, and sends the configured cell parameter to the base station cell parameter controller; if the notification message indicates the cell parameter configured by the first base station, the first base station performs cell parameter configuration according to the cell parameter indicated by the notification message; wherein the number of the second base stations is one or more;
if the notification message indicates that the first base station sets the priority of the cell parameter configured by the second base station to be the lowest, the first base station performs cell parameter configuration after setting the priority of the cell parameter configured by the second base station to be the lowest.
The following describes a procedure for configuring cell parameters of a first base station by using a specific embodiment.
The first embodiment is as follows:
in a GSM system, a first base station and a second base station are home base stations, cell parameters to be configured are BCCH frequency points, and the method specifically comprises the following steps:
the method comprises the following steps: the first base station monitors wireless environment information and sends a cell parameter configuration request to a base station cell parameter controller, wherein the wireless environment information is adjacent cell information of a cell in the same system with the first base station, and the adjacent cell information comprises information such as CI (common interface), BCCH (broadcast control channel) frequency points, BSIC (base station identity) and the like.
Step two: the base station cell parameter controller receives a cell parameter configuration request of a first base station and stores the cell parameter configuration request, processes the cell parameter configuration request sent by each femtocell according to a time sequence, and simultaneously processes the cell parameter configuration request sent by one femtocell every time.
Step three: and the base station cell parameter controller judges whether the cell parameter configuration request sent by the second base station is received within a preset time before the cell parameter configuration request of the first base station is received, if so, the fifth step is executed, and if not, the fourth step is executed.
Step four: the method for configuring the BCCH frequency point when the first base station is powered on in the prior art is used for configuring the cell parameters for the first base station.
For example, according to the principle of selecting the minimum interference level of the BCCH frequency points, the first base station selects a BCCH frequency point with the lowest interference level from the available BCCH frequency points for cell parameter configuration.
Step five: and the base station cell parameter controller judges whether the second base station is an adjacent base station of the first base station, if so, the seventh step is executed, and if not, the sixth step is executed.
The condition that the base station cell parameter controller judges whether the second base station is a neighboring base station of the first base station is as follows: and judging whether the intersection of the first base station and the second adjacent area list is empty, if not, the second base station is the adjacent base station of the first base station, otherwise, the second base station is not the adjacent base station of the first base station.
Specifically, when the base station cell parameter controller determines that the neighbor cell lists of the first base station and the second base station satisfy any one of the following conditions, it is determined that an intersection exists between the neighbor cell lists of the first base station and the second base station:
1) cells with equal BCCH frequency points and BSIC exist in the neighbor cell lists of the first base station and the second base station;
2) a cell with equal BCCH frequency points and BSIC exists in the adjacent cell lists of the first base station and the second base station, and the cell is an intra-network cell;
3) cells with the same CI exist in the neighbor cell lists of the first base station and the second base station;
4) the neighbor cell lists of the first base station and the second base station have cells with the same CI, and the cells are intra-network cells.
The neighbour list mentioned in all the above conditions refers to the handover neighbour list, i.e. the BA2 table.
Step six: on the basis of the cell parameter configuration method in the prior art, under the same priority, the cell parameters except the cell parameters configured by the second base station in the preset time before the sending time of the cell parameter configuration request of the first base station are preferentially selected.
The cell parameter controller of the base station may notify the first base station of the cell parameter used by the second base station, and instruct the first base station to set the priority of the cell parameter used by the second base station to be the lowest one of the candidate cell parameters having the same conditions as the priority of the cell parameter used by the second base station, among all the candidate cell parameters, and the first base station then performs cell parameter configuration and reports the configured cell parameter to the cell parameter controller of the base station.
The base station cell parameter controller may also set the priority of the cell parameter used by the second base station to be the lowest one of the candidate cell parameters of the same condition, and then configure the cell parameter for the first base station and notify the first base station, so that the first base station configures according to the cell parameter sent by the base station cell parameter controller.
Specifically, there are A, B, C three satisfactory BCCH frequency points and the second base station has used B with an interference strength a-B < C. At A, B, C, the first base station preferentially selects BCCH frequency points with small interference, excludes C, preferentially selects BCCH frequency points other than the BCCH frequency points used by the second base station under the condition of equal interference level, excludes B, and finally the first base station selects A. Or after the base station cell parameter controller selects A according to the rule, the base station cell parameter controller sends A to the first base station.
Step seven: and after the cell parameters used by the second base station are eliminated, selecting one cell parameter from the candidate cell parameters for configuration.
The cell parameter controller of the base station may notify the first base station of the cell parameter used by the second base station, and instruct the first base station to exclude the cell parameter used by the second base station from all candidate cell parameters, and the first base station then performs cell parameter configuration and reports the configured cell parameter to the cell parameter controller of the base station.
The base station cell parameter controller may also exclude the cell parameter used by the second base station, configure the cell parameter for the first base station, and notify the first base station, so that the first base station performs configuration according to the cell parameter sent by the base station cell parameter controller.
Specifically, there are A, B, C three satisfactory BCCH frequency points, and the second base station has used B, whose interference strength is a ═ B < C. At A, B, C, the first base station preferentially excludes the BCCH frequency points used by the second base station, at this time B is excluded, then the BCCH frequency points with small interference are selected, at this time C is excluded under the condition of equal interference level, and finally the first base station selects A. Or after the base station cell parameter controller selects A according to the rule, the base station cell parameter controller sends A to the first base station.
Example two:
in the LTE system, the first base station and the second base station are home base stations, the cell parameter to be configured is PCI, and the specific steps are as follows:
the method comprises the following steps: the first base station monitors wireless environment information and sends a cell parameter configuration request to a base station cell parameter controller, wherein the wireless environment information is adjacent cell information of a cell in the same system with the first base station, and the adjacent cell information comprises information such as CI (common interface), frequency point, PCI (peripheral component interconnect) and the like.
Step two: the base station cell parameter controller receives a cell parameter configuration request of a first base station and stores the cell parameter configuration request, processes each cell parameter configuration request according to a time sequence, and simultaneously processes one cell parameter configuration request each time.
Step three: and the base station cell parameter controller judges whether the cell parameter configuration request sent by the second base station is received within a preset time before the cell parameter configuration request of the first base station is received, if so, the fifth step is executed, and if not, the fourth step is executed.
Step four: the cell parameters are configured for the first base station according to a method for configuring the PCI when the first base station is powered on in the prior art. For example, the PCI configuration of the first base station is completed according to the non-conflict and non-confusion principle specified by the protocol, which is the prior art and therefore will not be described herein again.
Step five: and the base station cell parameter controller judges whether the second base station is an adjacent base station of the first base station, if so, the seventh step is executed, and if not, the sixth step is executed.
The condition that the base station cell parameter controller judges whether the second base station is a neighboring base station of the first base station is as follows:
and judging whether the distance between the first base station and the second base station is less than twice the distance of the coverage radius of the first base station, if so, the second base station is an adjacent base station of the first base station.
Step six: on the basis of the cell parameter configuration method in the prior art, under the same priority, the cell parameters except the cell parameters configured by the second base station in the preset time before the sending time of the cell parameter configuration request of the first base station are preferentially selected.
The cell parameter controller of the base station may notify the first base station of the cell parameter used by the second base station, and instruct the first base station to set the priority of the cell parameter used by the second base station to be the lowest one of the candidate cell parameters having the same conditions as the priority of the cell parameter used by the second base station, among all the candidate cell parameters, and the first base station then performs cell parameter configuration and reports the configured cell parameter to the cell parameter controller of the base station.
The base station cell parameter controller may also set the priority of the cell parameter used by the second base station to be the lowest one of the candidate cell parameters of the same condition, and then configure the cell parameter for the first base station and notify the first base station, so that the first base station configures according to the cell parameter sent by the base station cell parameter controller.
Specifically, there are A, B two PCIs that meet the requirement, and the second base station has used B, on the principle of meeting the requirements of no conflict, no confusion and no mutual interference with the neighboring cells. Between A, B, the first base station preferentially selects PCIs other than those already used by the second base station, excluding B, and finally the first base station selects a. Or after the base station cell parameter controller selects A according to the rule, the base station cell parameter controller sends A to the first base station.
Step seven: and after the cell parameters used by the second base station are eliminated, selecting one cell parameter from the candidate cell parameters for configuration.
The cell parameter controller of the base station may notify the first base station of the cell parameter used by the second base station, and instruct the first base station to exclude the cell parameter used by the second base station from all candidate cell parameters, and the first base station then performs cell parameter configuration and reports the configured cell parameter to the cell parameter controller of the base station.
The base station cell parameter controller may also exclude the cell parameter used by the second base station, configure the cell parameter for the first base station, and notify the first base station, so that the first base station performs configuration according to the cell parameter sent by the base station cell parameter controller.
Specifically, there are A, B two or two sets of satisfactory PCIs, and the second base station has used B. Between A, B, the first base station preferentially excludes PCIs already used by the second base station, at which point B is excluded and finally the first base station selects a. Or after the base station cell parameter controller selects A according to the rule, the base station cell parameter controller sends A to the first base station.
For the above method flow, an embodiment of the present invention further provides a cell parameter configuration device, and specific contents of the device may be implemented with reference to the above method, which is not described herein again.
As shown in fig. 3, an embodiment of the present invention provides a structure diagram of a cell parameter configuration apparatus, where the apparatus includes:
an obtaining unit 301, configured to obtain, after receiving a cell parameter configuration request sent by a first base station, a history of the cell parameter configuration request stored by a cell parameter controller of the base station;
a determining unit 302, configured to determine, according to the saved history of the cell parameter configuration request, whether a cell parameter configuration request sent by a second base station is received within a preset time length before the cell parameter configuration request is received, where the second base station is a neighboring base station of the first base station; wherein the number of the second base stations is one or more; if so, sending a notification message to the first base station, wherein the notification message carries the cell parameters configured by the second base station, and the notification message is used for indicating that the cell parameters configured by the second base station are excluded when the first base station configures the cell parameters; or, after excluding the cell parameter configured by the second base station, configuring the cell parameter for the first base station, and sending the configured cell parameter to the first base station.
Preferably, the determining unit 302 is further configured to:
if the cell parameter configuration request sent by the second base station is received within a preset time length before the cell parameter configuration request sent by the first base station is received, but the second base station is not a neighboring base station of the first base station, then: sending a notification message to the first base station, where the notification message carries the cell parameter configured by the second base station, and the notification message is used to instruct the first base station to set the priority of the cell parameter configured by the second base station to be the lowest; or,
and after the priority of the cell parameters configured by the second base station is set to be the lowest, the cell parameters are configured for the first base station, and the configured cell parameters are sent to the first base station.
Preferably, the preset time length is a time length required from power-on to turning on of the downlink radio frequency device when the first base station is started.
Preferably, the determining unit 302 is further configured to:
if the first base station and the second base station meet the following conditions, determining that the second base station is a neighboring base station of the first base station:
the adjacent area list of the second base station and the adjacent area list of the first base station have intersection; or,
the distance between the second base station and the first base station is less than twice the power coverage radius of the first base station.
As shown in fig. 4, an embodiment of the present invention further provides a cell parameter configuration apparatus, where the apparatus includes:
a sending unit 401, configured to send a first cell parameter configuration request to a base station cell parameter controller;
a configuration unit 402, configured to receive a notification message returned by the base station cell parameter controller according to the cell parameter configuration request; if the notification message indicates that the first base station excludes the cell parameters configured by the second base station from the candidate cell parameters, the first base station performs cell parameter configuration after excluding the cell parameters configured by the second base station, and sends the configured cell parameters to the base station cell parameter controller; if the notification message indicates the cell parameter configured by the first base station, the first base station performs cell parameter configuration according to the cell parameter indicated by the notification message; wherein the number of the second base stations is one or more.
Preferably, the configuration unit 402 is further configured to:
if the notification message indicates that the first base station sets the priority of the cell parameter configured by the second base station to be the lowest, the cell parameter configuration is performed after the priority of the cell parameter configured by the second base station is set to be the lowest.
It can be seen from the above that, in the embodiment of the present invention, when configuring the cell parameters, the base station sends the cell parameter request to the base station cell parameter controller, and the base station cell parameter controller processes the base stations in the coverage area thereof one by one according to the time sequence of the request. The base station cell parameter controller obtains cell parameter configuration which is simultaneously carried out with the base station and is configured by the base station of the adjacent base station of the base station through judgment, and the base station cell parameter controller configures the cell parameter for the base station after excluding the cell parameter or informs the base station so that the base station excludes the cell parameter when configuring the cell parameter. By the method, the problem of mutual interference caused by the configuration of the same cell parameters when a plurality of base stations configure the cell parameters at the same time can be avoided.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A method for configuring cell parameters, the method comprising:
after receiving a cell parameter configuration request sent by a first base station, a base station cell parameter controller acquires a history record of the cell parameter configuration request stored by the base station cell parameter controller;
the base station cell parameter controller determines whether a cell parameter configuration request sent by a second base station is received within a preset time length before the cell parameter configuration request is received according to the stored history of the cell parameter configuration request, wherein the second base station is an adjacent base station of the first base station; wherein the number of the second base stations is one or more;
if so, the base station cell parameter controller sends a notification message to the first base station, wherein the notification message carries the cell parameters configured by the second base station, and the notification message is used for indicating that the first base station excludes the cell parameters configured by the second base station when configuring the cell parameters; or, after excluding the cell parameter configured by the second base station, the base station cell parameter controller configures the cell parameter for the first base station, and sends the configured cell parameter to the first base station;
if the cell parameter controller of the base station receives the cell parameter configuration request sent by the second base station within a preset time length before receiving the cell parameter configuration request sent by the first base station, but the second base station is not a neighboring base station of the first base station, then: the base station cell parameter controller sends a notification message to the first base station, wherein the notification message carries the cell parameters configured by the second base station, and the notification message is used for indicating the first base station to set the priority of the cell parameters configured by the second base station to be the lowest; or,
and after setting the priority of the cell parameter configured by the second base station to be the lowest, the base station cell parameter controller configures the cell parameter for the first base station and sends the configured cell parameter to the first base station.
2. The method of claim 1, wherein the predetermined time period is a time period required from power-up to turning on a downlink rf device when the first base station is powered on.
3. The method of claim 1, wherein the second base station is determined to be a neighboring base station of the first base station if the base station cell parameter controller determines that the second base station satisfies the following conditions:
the adjacent area list of the second base station and the adjacent area list of the first base station have intersection; or,
the distance between the second base station and the first base station is less than twice the power coverage radius of the first base station.
4. A method for configuring cell parameters, the method comprising:
a first base station sends a first cell parameter configuration request to a base station cell parameter controller;
the first base station receives a notification message returned by the base station cell parameter controller according to the cell parameter configuration request;
if the notification message indicates that the first base station excludes the cell parameters configured by the second base station from the candidate cell parameters, the first base station performs cell parameter configuration after excluding the cell parameters configured by the second base station, and sends the configured cell parameters to the base station cell parameter controller; if the notification message indicates the cell parameter configured by the first base station, the first base station performs cell parameter configuration according to the cell parameter indicated by the notification message; wherein the number of the second base stations is one or more;
if the notification message indicates that the first base station sets the priority of the cell parameter configured by the second base station to be the lowest, the first base station performs cell parameter configuration after setting the priority of the cell parameter configured by the second base station to be the lowest.
5. An apparatus for configuring cell parameters, the apparatus comprising:
the device comprises an acquisition unit, a parameter configuration unit and a parameter configuration unit, wherein the acquisition unit is used for acquiring the history of the cell parameter configuration request stored by a cell parameter controller of a base station after receiving the cell parameter configuration request sent by a first base station;
a determining unit, configured to determine, according to the stored history of the cell parameter configuration request, whether to receive a cell parameter configuration request sent by a second base station within a preset time length before the cell parameter configuration request is received, where the second base station is a neighboring base station of the first base station; wherein the number of the second base stations is one or more; if so, sending a notification message to the first base station, wherein the notification message carries the cell parameters configured by the second base station, and the notification message is used for indicating that the cell parameters configured by the second base station are excluded when the first base station configures the cell parameters; or, after excluding the cell parameters configured by the second base station, configuring the cell parameters for the first base station, and sending the configured cell parameters to the first base station;
if the cell parameter configuration request sent by the second base station is received within a preset time length before the cell parameter configuration request sent by the first base station is received, but the second base station is not a neighboring base station of the first base station, then: sending a notification message to the first base station, where the notification message carries the cell parameter configured by the second base station, and the notification message is used to instruct the first base station to set the priority of the cell parameter configured by the second base station to be the lowest; or,
and after the priority of the cell parameters configured by the second base station is set to be the lowest, the cell parameters are configured for the first base station, and the configured cell parameters are sent to the first base station.
6. The apparatus of claim 5, wherein the predetermined time period is a time period required from power-up to turning on of a downlink RF device when the first base station is powered on.
7. The apparatus of claim 5, wherein the determination unit is further to:
if the first base station and the second base station meet the following conditions, determining that the second base station is a neighboring base station of the first base station:
the adjacent area list of the second base station and the adjacent area list of the first base station have intersection; or,
the distance between the second base station and the first base station is less than twice the power coverage radius of the first base station.
8. An apparatus for configuring cell parameters, the apparatus comprising:
a sending unit, configured to send a first cell parameter configuration request to a base station cell parameter controller;
a configuration unit, configured to receive a notification message returned by the base station cell parameter controller according to the cell parameter configuration request; if the notification message indicates that the first base station excludes the cell parameters configured by the second base station from the candidate cell parameters, the first base station performs cell parameter configuration after excluding the cell parameters configured by the second base station, and sends the configured cell parameters to the base station cell parameter controller; if the notification message indicates the cell parameter configured by the first base station, the first base station performs cell parameter configuration according to the cell parameter indicated by the notification message; wherein the number of the second base stations is one or more;
if the notification message indicates that the first base station sets the priority of the cell parameter configured by the second base station to be the lowest, the cell parameter configuration is performed after the priority of the cell parameter configured by the second base station is set to be the lowest.
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| FR3049419B1 (en) * | 2016-03-24 | 2018-03-16 | Red Technologies Sas | OPTIMIZED CONFIGURATION OF A PARAMETER OF A CELL USING A RADIO ENVIRONMENT CARD |
| CN109413677B (en) * | 2018-12-19 | 2022-06-07 | 京信网络系统股份有限公司 | Cell parameter configuration method and device, base station and parameter management system |
| CN113645695B (en) * | 2020-04-27 | 2023-09-19 | 北京小米移动软件有限公司 | Method, device and storage medium for processing radio resource control link configuration signaling |
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| CN101990197A (en) * | 2009-08-05 | 2011-03-23 | 中兴通讯股份有限公司 | Method and system for realizing cell physical identification configuration in home base station |
| CN102612038A (en) * | 2012-04-13 | 2012-07-25 | 北京邮电大学 | Self-configuration method of physical cell identity of family base station |
| CN103202049A (en) * | 2010-11-15 | 2013-07-10 | 诺基亚西门子通信有限责任两合公司 | Conflict handling in self-organizing networks |
| CN103945397A (en) * | 2014-04-02 | 2014-07-23 | 京信通信系统（中国）有限公司 | Method, device and system for scale networking adjacent region configuration |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101990197A (en) * | 2009-08-05 | 2011-03-23 | 中兴通讯股份有限公司 | Method and system for realizing cell physical identification configuration in home base station |
| CN103202049A (en) * | 2010-11-15 | 2013-07-10 | 诺基亚西门子通信有限责任两合公司 | Conflict handling in self-organizing networks |
| CN102612038A (en) * | 2012-04-13 | 2012-07-25 | 北京邮电大学 | Self-configuration method of physical cell identity of family base station |
| CN103945397A (en) * | 2014-04-02 | 2014-07-23 | 京信通信系统（中国）有限公司 | Method, device and system for scale networking adjacent region configuration |
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