JP2012070275A - Base station and control method in base station - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a base station and a control method in the base station in which, when processing for wireless service for a mobile station in a service area is assigned to any one of plural processing units, total power consumption of the processing units is suppressed and a delay in processing for wireless service having high priority is prevented.SOLUTION: A control unit 40 accumulates a predictive processing amount of wireless service for a mobile station. On the basis of the accumulated amount of the predictive processing amount, the control unit 40 increases or decreases the number of cores (i.e., the number of cores in use) to perform processing among plural cores. At this time, when the control unit 40 receives, from the mobile station, a new call connection request, that is, a request to provide the mobile station with a new wireless service to be processed, the control unit 40 performs control so that, as the new wireless service has higher priority, the number of processing units is more likely to increase and not to decrease.

Description

  The present invention relates to a technique in which a base station assigns processing for a plurality of mobile stations within a service area of its own station to processing units such as a plurality of processor cores.

  A conventional base station is also referred to as a processor core (also referred to as a “CPU (Central Processing Unit) core”) that performs processing for radio services for a plurality of mobile stations within its service area. Multiple). A plurality of cores constitute a DSP (Digital Signal Processor). The baseband processing unit of the base station has a plurality of such DSPs. When a new call connection request is generated from a mobile station under its control, the base station having such a configuration allocates a resource for processing a radio service for the mobile station to any one of the cores. At this time, a core to which no resource for performing processing for the mobile station is allocated can be set to a sleep mode, and power consumption of the core can be reduced.

  As a conventional base station, for example, a base station having a plurality of CPUs that execute a call processing algorithm for one or a plurality of connections is known. This base station has a base station that prevents individual CPUs from being overloaded by distributing connections to CPUs with less load among a plurality of CPUs according to a centralized load distribution processing algorithm.

JP 2005-304019 A

FIG. 1 shows the relationship between the number of mobile stations (UE: User Equipment) to which resources are allocated for processing by one core (the number of allocated UEs) and the power consumption (processing load) of the cores. . As described above, if the number of assigned UEs is 0, the core is set to the sleep mode, and the power consumption is almost zero. If the number of assigned UEs is even one, a load (fixed load) for processing that occurs regardless of the number of UEs and a load (variable load) according to the number of UEs to be processed are generated. Corresponding power consumption occurs. Here, assuming that the fixed load is B _F and the variable load per UE is B _V , for example, when processing for four mobile stations is executed by one core, the load on the core is B _F + 4B _V . On the other hand, for example, when processing for four mobile stations is assigned to four cores one by one, the total load of all four cores is 4B _F + 4B _V. Therefore, it can be seen that the power consumption of the base station as a whole can be reduced by reducing the number of cores for executing the processing of the mobile station as much as possible.

  However, reducing the number of cores (that is, the number of used cores) for executing the processing of the mobile station as much as possible means that the operating cores are used with a high load. Therefore, when there is an instantaneous high load on the operating core, such as when traffic increases suddenly, new processing cannot be performed on the operating core, and processing of new wireless services is delayed. Or, in the worst case, may result in discarding the packet or the like. This is especially true when a request for a new process based on a request for a wireless service with a high priority is generated from a mobile station to an operating core.

  Therefore, in one aspect of the invention, when processing of a wireless service for a mobile station in a service area is assigned to any one of a plurality of processing units, the power consumption of the entire processing unit is suppressed and a high priority wireless service is provided. It is an object of the present invention to provide a base station and a control method in the base station, which can prevent a delay in processing.

In a first aspect, a base station that provides wireless service by performing wireless communication with a plurality of mobile stations in a service area is provided.
This base station
(A) A plurality of processing units that can independently execute processing of a radio service for a mobile station;
(B) A storage that stores a first database in which a plurality of types of wireless services for mobile stations are associated with various priorities and predetermined prediction processing amounts for processing various types of wireless services. Part;
(C) A process of accumulating the predicted processing amount of the wireless service to be processed with reference to the first database, and executing a process among the plurality of processing units according to an increase or decrease in the integrated value of the predicted processing amount The number of units is controlled so as to increase or decrease. When a new wireless service to be processed is newly generated, the first database is referred to, and the higher the priority of the new wireless service, the higher the priority of the processing unit that executes the processing. A control unit for controlling the number so that it is easy to increase and difficult to decrease;
Is provided.

  According to a second aspect, there is provided a control method in a base station that includes a plurality of processing units that perform radio communication with a plurality of mobile stations in a service area and that can independently execute radio service processing for the mobile stations. Provided.

  According to the disclosed base station and the control method in the base station, when the processing of the radio service for the mobile station in the service area is allocated to any of the plurality of processing units, the power consumption of the entire processing unit is suppressed and priority is given. It is possible to prevent a delay in processing for a high-frequency wireless service.

The figure which shows the relationship between the number of the mobile stations allocated to one core, and the power consumption or processing load of the core. The figure which shows the mobile communication system containing the base station of embodiment. The block diagram which shows the structure of the base station of embodiment. The figure which shows an example of a QCI database. The figure which shows an example of a core use condition database. The figure explaining the operation | movement which the control part of the base station of embodiment allocates the process of the radio | wireless service with respect to a mobile station to several cores. The figure explaining the operation | movement which the control part of the base station of embodiment allocates the process of the radio | wireless service with respect to a mobile station to several cores. The flowchart shown about the preferable operation | use method of the database used by control in the base station of embodiment.

  Hereinafter, the base station of this embodiment and the control method in the base station will be described. In the following description of the embodiments, a base station and a mobile station are abbreviated as eNB (evolved Node B) and UE (User Equipment) as appropriate. The service area (or cell) means a geographical area where a mobile station connects to a base station and receives wireless service from the base station.

(1-1) Mobile Communication System FIG. 2 is a diagram illustrating a mobile communication system including a base station according to the present embodiment.
The base station eNB performs radio communication with a plurality of mobile stations UE in the service area to provide a radio service. In FIG. 2, the mobile station UE2 is a mobile station that makes a connection request for a new call in order to receive a radio service from the base station eNB. In this system, a call connection request from a mobile station to a base station includes a QCI (QoS Class Identifier) to be described later. The base station eNB can be connected to an external EMS (Element Management System) by wire or wireless.

(1-2) Configuration of Base Station FIG. 3 is a block diagram showing the configuration of the base station eNB of this embodiment.
The configuration of the base station eNB shown in FIG. 3 includes two antennas for transmission and reception as an example, and each antenna is connected to the transceivers 10-1 and 10-2, respectively. The transceivers 10-1 and 10-2 are respectively connected to baseband processing units 20-1 and 20-2 (hereinafter simply abbreviated as “baseband processing unit 20” as appropriate).

  Each of the transceivers 10-1 and 10-2 includes a reception unit and a transmission unit. The receiving unit includes a band limiting filter, a low noise amplifier (LNA), a local frequency oscillator, a quadrature demodulator, an AGC (Automatic Gain Control) amplifier, an A / D (Analog to Digital) converter, and the like. The receiving unit converts the RF signal received from the mobile station at the antenna into a digital baseband signal and supplies the digital baseband signal to the baseband processing unit 20. The transmission unit includes a D / A (Digital to Analog) converter, a local frequency transmitter, a mixer, a power amplifier, a filter, and the like. The transmission unit radiates the baseband signal from the baseband processing unit 20 from the antenna to the space after up-converting from the baseband frequency to the radio frequency.

  As an example, the baseband processing unit 20 includes two DSPs (Digital Signal Processors). Each DSP includes, for example, four processor cores (cores) # 1 to # 4. The core is an example of a processing unit. Note that the number of baseband processing units, the number of DSPs, and the number of cores included in each DSP shown in FIG. 3 are merely examples, and can be determined as desired according to the application.

The control unit 40 manages resources for processing wireless services for the mobile station UE in the baseband processing unit 20. More specifically, the control unit 40 performs control to allocate wireless service processing for a plurality of mobile stations in the service area of the own station to a plurality of cores in the baseband processing unit 20. For this control, the control unit 40 is configured to be accessible to the QCI database (DB) stored in the first database storage unit 51 and the core usage condition database (DB) stored in the second database storage unit 52. Has been. The core allocation control in the control unit 40 will be described later.
The control unit 40 is also connectable to an external EMS and / or S-GW (Serving Gateway) and MME (Mobility Management Entity), which are higher-level devices of the base station eNB, via the communication interface 60.

FIG. 4 shows an example of the QCI database.
As described above, in the mobile communication system of this embodiment, when a mobile station makes a connection request for a new call to a base station, the mobile station includes QCI in the connection request. The new call connection request is a request that the mobile station makes to the base station and requests the base station to provide a new wireless service to be newly processed. The QCI is a code corresponding to the type of wireless service that the mobile station desires to receive from the base station in a new call connection request (illustrated by a decimal number in FIG. 4). . In the QCI database, the priority of the corresponding type of wireless service and the predicted processing amount thereof are associated with each QCI (the number indicating QCI in FIG. 4). Setting priority according to the type of service can be arbitrarily performed. In the example shown in FIG. 4, the form of a wireless service such as voice call (Voice) or streaming (Real-Time Polling Service), the required communication speed such as High rate / Low rate, the communication use such as Normal / VIP / Emergency, etc. The priority is set according to the type of. For example, Voice (Emergency), which is a voice call such as an earthquake / disaster, has a higher priority than Voice (Normal), which is a normal voice call.
The predicted processing amount is a processing amount considered necessary for the type of wireless service or a resource amount used. The predicted processing amount may be set to a fixed value based on knowledge obtained empirically for the type of wireless service, or QCI, that is, the processing amount (or use depending on the type of wireless service) May be set by statistically processing a sample of the amount of the resource).

FIG. 5 shows an example of the core usage condition database.
The core usage condition database is a database for prescribing conditions regarding the range of the integrated value of the predicted processing amount according to the number of cores (that is, cores to be used) to be processed. The core use condition database is an example of a second database. FIG. 5 shows a case where the number of used cores is in the range of 1 to 6, as an example.

  The control unit 40 sequentially calculates the integrated value of the predicted processing amount for the mobile station assigned to each core in the baseband processing unit 20. This integrated value is updated when the transceivers 10-1 and 10-2 receive a new call connection request from the mobile station. Further, when the provision of the wireless service corresponding to the call connection request is completed, the predicted processing amount corresponding to the connection request is excluded from the integrated value. When the control unit 40 receives a new call connection request, the control unit 40 adds a predicted processing amount corresponding to the QCI included in the new call connection request to the integrated value of the predicted processing amount at that time (that is, new New integrated value when a wireless service for the connection request is provided is calculated. Then, the control unit 40 refers to the core use condition database based on the new integrated value, and increases or decreases the number of cores to be used.

  In the core usage condition database shown in FIG. 5, the “core number UP condition” means that when a connection request for a new call is received from a mobile station, it is determined according to the priority indicated by the QCI included in the connection request. This is a condition for increasing (UP) the number of cores used when a connection request is made. In the “core number UP condition” illustrated in FIG. 5, an upper limit value (first threshold) of the range of the integrated value of the predicted processing amount according to the number of processing units to be processed is described.

  For example, when the number of cores used at the time of a new call connection request (current number of cores) is 1, the priority (priority of a new call) indicated by the QCI included in the connection request When the integrated value of the predicted processing amount including the predicted processing amount indicated by the QCI exceeds 95, the number of cores to be used is increased (1 → 2). Also, the number of cores used at the time when a new call connection request is made (current number of cores) is 1, and the priority indicated by the QCI included in the connection request (priority of new call) When the integrated value of the predicted processing amount including the predicted processing amount indicated by the QCI exceeds 140, the number of cores to be used is increased (1 → 2). That is, the higher the priority of a new call, the easier it is to increase the number of cores to be used, thereby causing an instantaneous high load on the operating core due to a sudden change in traffic However, control is performed so that processing delay is suppressed.

  In the core usage condition database shown in FIG. 5, the “number of cores DOWN condition” means that when a connection request for a new call is received from a mobile station, according to the priority indicated by the QCI included in the connection request, This is a condition for reducing (DOWN) the number of cores used when a connection request is made. In the “core number DOWN condition” shown in FIG. 5, a lower limit value (second threshold value) of the range of the integrated value of the predicted processing amount according to the number of processing units to be processed is described.

  For example, the number of cores used at the time of a new call connection request (current number of cores) is 2, and the priority (priority of new call) indicated by the QCI included in the connection request When the integrated value of the predicted processing amount including the predicted processing amount indicated by the QCI becomes smaller than 55, the number of cores to be used is decreased (2 → 1). Further, the number of cores used at the time when a new call connection request is made (current number of cores) is 2, and the priority indicated by the QCI included in the connection request (priority of new call) When the integrated value of the prediction processing amount including the prediction processing amount indicated by the QCI is smaller than 100, the number of cores to be used is decreased (2 → 1). In other words, the higher the priority of a new call, the less the number of cores to be used, which causes a sudden high load on the operating core due to a sudden change in traffic. However, control is performed so that processing delay is suppressed.

(1-3) Core Allocation Control Next, referring to FIGS. 5 and 6, the operation of the control unit 40, that is, the processing of radio services for a plurality of mobile stations in the service area of the base station, is based on An operation assigned to a plurality of cores in the band processing unit 20 will be described.
In FIG. 6, the horizontal axis represents time, and the vertical axis represents (a) the integrated value of the predicted processing amount and (b) the number of cores to be used (hereinafter abbreviated as “number of used cores” as appropriate). As described above, the control unit 40 sequentially calculates the integrated value of the predicted processing amount (hereinafter simply referred to as “integrated value” as appropriate).

  In FIG. 6, it is assumed that the number of mobile stations to be processed is small and the number of used cores is 1 before time t1. Before time t1, since the integrated value is 95 or less (minimum value of the threshold value of the core number UP condition when the current number of cores is 1; see FIG. 5), the number of used cores remains one. Upon receiving a new call connection request at time t1, the QCI database is referred to for the QCI (in this case, for example, “2”) included in the connection request. As a result, it can be seen that the QCI priority level of the new connection request is 10, and the predicted processing amount is 1 (see FIG. 4). In the example shown in FIG. 6, the case where the new integrated value including the predicted processing amount corresponding to the new connection request exceeds 95 is shown. In this case, the number of used cores is increased from 1 to 2. .

  The number of used cores remains 2 before time t2 after elapse of time t1. A new call connection request is received at time t2, and the QCI database is referred to for the QCI (in this case, for example, “8”) included in the connection request. As a result, it can be seen that the QCI priority level of the new connection request is 4, and the predicted processing amount is 2 (see FIG. 4). In the example shown in FIG. 6, the new integrated value obtained by adding the predicted processing amount corresponding to the new connection request is 250 (when the current number of cores is 2 and the priority of the new call is 4). The case where the number of cores UP condition threshold is exceeded (see FIG. 5) is shown. At this time, the control unit 40 increases the number of used cores from 2 to 3.

  The number of cores used remains 3 before the time t3 after the time t2. At time t3, a new call connection request is received, and the QCI database is referred to for the QCI (in this case, for example, “6”) included in the connection request. As a result, it can be seen that the QCI priority level of the new connection request is 6 and the predicted processing amount is 4 (see FIG. 4). In the example shown in FIG. 6, a new integrated value obtained by adding a predicted processing amount corresponding to a new connection request is 345 (when the current number of cores is 3 and the priority of a new call is 6). The case where the number of cores UP condition threshold is exceeded (see FIG. 5) is shown. At this time, the control unit 40 increases the number of used cores from 3 to 4.

  The number of used cores remains 4 before time t4 after elapse of time t3. Upon receiving a new call connection request at time t4, the QCI database is referred to for the QCI (in this case, for example, “8”) included in the connection request. As a result, it can be seen that the QCI priority level of the new connection request is 4, and the predicted processing amount is 2 (see FIG. 4). In the example shown in FIG. 6, the new integrated value obtained by adding the predicted processing amount corresponding to the new connection request is 335 (when the current number of cores is 4 and the priority of the new call is 4). The number of cores DOWN condition threshold value (see FIG. 5) is shown below. At this time, the control unit 40 reduces the number of cores used from 4 to 3.

  The number of used cores remains 3 before time t5 after elapse of time t4. A new call connection request is received at time t5, and the QCI database is referred to for the QCI (in this case, for example, “7”) included in the connection request. As a result, it is understood that the QCI priority level of the new connection request is 6 and the predicted processing amount is 2 (see FIG. 4). In the example shown in FIG. 6, the new integrated value obtained by adding the predicted processing amount corresponding to the new connection request is 190 (when the current number of cores is 3 and the priority of the new call is 6). The number of cores DOWN condition threshold value (see FIG. 5) is shown below. At this time, the control unit 40 decreases the number of used cores from 3 to 2.

  The number of used cores remains 2 before time t6 after elapse of time t5. A new call connection request is received at time t6, and the QCI database is referred to for the QCI (in this case, for example, “2”) included in the connection request. As a result, it can be seen that the QCI priority level of the new connection request is 10, and the predicted processing amount is 1 (see FIG. 4). In the example shown in FIG. 6, the new integrated value obtained by adding the predicted processing amount corresponding to the new connection request is 55 (when the current core number is 2 and the priority of the new call is 10). The number of cores DOWN condition threshold value (see FIG. 5) is shown below. At this time, the control unit 40 decreases the number of used cores from 2 to 1.

  FIG. 6 shows an example in which the timing at which the integrated value of the predicted processing amount exceeds the threshold value shown in FIG. 5 or falls below the threshold value matches the timing at which the number of used cores changes. These timings do not need to match. An example of the operation in which the timings of both do not match will be described with reference to FIG.

  In FIG. 7, the actual processing amount of each core is conceptually shown for the four cores # 1 to # 4 at different points in time (a) to (d), and the black portion of each core indicates the processing amount. Indicates the size. In FIG. 7, “normal”, “virtual blockage”, and “virtual PBLK” indicate core states. Here, “normal” is a state in which the core is processing, “virtual blocking” is a state in which the core is not processing and no new processing is allocated, and “virtual PBKK” is already allocated This indicates a state in which the process can be executed but a new process is not assigned.

In FIG. 7, at the time of (a), the integrated value of the predicted processing amount is small and only the core # 1 is operating. When connection requests for new calls increase and the integrated value of the predicted processing amount exceeds the threshold value of the core number UP condition at the time of (b), the control unit 40 changes the core # 2 to the “normal” state. Then, the wireless service process corresponding to the new call connection request from the mobile station is assigned to the core # 2. After that, as a result of the decrease in the total traffic volume, when the integrated value of the predicted processing volume falls below the core number DOWN condition threshold, the control unit 40 causes the core # 2 to transition from the “normal” state to the “virtual PBLK” state. Thus, control is performed so that a new process is not assigned to the core # 2. At this time, the core # 2 continuously performs the process being executed. Thereafter, the number of used cores is reduced at the time when all the wireless service processes in the core # 2 (or the core # 1) are completed ((d) in FIG. 7). In FIG. 7D, since all the wireless service processes in the core # 2 are completed, the core # 2 is changed from the “virtual PBLK” state to the “virtual blocking” state.
As illustrated in FIG. 7, the method of controlling each core according to any of the “normal”, “virtual blocked”, and “virtual PBLK” states is when the control method of this embodiment is to be realized by software. It can be suitably applied to.

  As described above, in the base station according to the present embodiment, the predicted processing amount of the wireless service for the mobile station is integrated, and the number of cores that execute processing among a plurality of cores according to the integrated value of the predicted processing amount (that is, Increase or decrease the number of cores used. At this time, when a new call connection request, that is, when a new wireless service to be processed is generated, the higher the priority of the new wireless service, the easier and less the number of processing units that execute processing. Control to make it difficult to do. As a result, the number of cores for performing processing for mobile stations is limited to suppress the overall power consumption, and even when an instantaneous high load occurs on the operating core due to a sudden change in traffic. The processing delay is suppressed.

(1-4) Database Operation Next, a preferable operation method of a database (QCI database and / or core usage condition database) used for control in the base station of this embodiment will be described with reference to FIG. In this database operation method, an EMS (element management system) creates a database and updates the database according to traffic data fed back from the base station.

  Referring to FIG. 8, first, the EMS creates a database and provides it to the base station eNB (steps S10 and S12). This initial database may be a fixed value reflecting, for example, a desktop simulation result. The base station eNB stores the provided databases, that is, the QCI database and the core use condition database in the first database storage unit 51 and the second database storage unit 52, respectively (step S14), and starts control by the control unit 40. . The control unit 40 executes the allocation process to each core for the radio service process for the mobile station by the method described in relation to FIG. 6 and FIG. 7 (step S16). Also, the base station eNB, for example, periodically collects its own traffic data and reports the traffic data to the EMS (steps S18 and S20). This traffic data can include data such as the number of cores used in time series, the amount of power used, and the number of discarded packets.

The EMS analyzes the traffic data (step S22), and updates the database created in step S10 based on the analysis result (step S24).
For example, when the number of discarded packets is larger than a predetermined reference value, it is assumed that the core is used in a state where there is not much margin for the processing capability of each core. Therefore, the core usage condition database may be updated so that the threshold value of the core number UP condition is lowered as a whole and / or the threshold value of the core number DOWN condition is raised as a whole.
Further, the traffic data reported from the base station eNB may include data including the relationship between the QCI and the actual number of processed packets, and the EMS may statistically process such data (sample). . In this case, the EMS may update the QCI database so that the correlation between the predicted processing amount corresponding to the QCI and the actual processing amount becomes high.

  The updated database is provided to the base station eNB and stored again in the first database storage unit 51 and the second database storage unit 52 (steps S26 and S28). Thereafter, similarly, the database is periodically updated, for example, and control in the base station eNB is performed.

The embodiment of the present invention has been described in detail above. However, the base station and the control method in the base station of the present invention are not limited to the above embodiment, and various improvements and modifications can be made without departing from the gist of the present invention. Of course, you may do.
For example, in the mobile communication system of the present embodiment, an example is shown in which the QCI is included when the mobile station makes a connection request for a new call to the base station. However, the mobile communication system is not limited to using the QCI. . At the timing when the mobile station makes a new call connection request to the base station, the mobile station is given to the base station information associated with the priority of the wireless service and the predicted processing amount for the connection request. That's fine. Such information can also be included in control information from the mobile station to the base station, for example.

  Regarding the above embodiments, the following additional notes are disclosed.

(Appendix 1)
A base station that performs wireless communication with a plurality of mobile stations in a service area to provide a wireless service,
A plurality of processing units capable of independently executing wireless service processing for mobile stations;
A storage unit that stores a first database in which a plurality of types of priority and a predetermined prediction processing amount for processing each type of wireless service are associated with each of a plurality of types of wireless services for a mobile station;
The processing unit that integrates the predicted processing amount of the wireless service to be processed with reference to the first database and executes the processing among the plurality of processing units according to the increase or decrease of the integrated value of the predicted processing amount. The number is controlled so that the number increases or decreases. When a new wireless service to be processed is newly generated, the first database is referred to, and the higher the priority of the new wireless service, the number of processing units that execute processing. A control unit that controls to increase easily and not to decrease;
A base station comprising: (1)

(Appendix 2)
A second storage unit for storing a second database for defining a condition for the range of the integrated value of the predicted processing amount according to the number of processing units to be processed;
The second database includes a first threshold value that is an upper limit value of the range of integrated values of the predicted processing amount and a second threshold value that is a lower limit value of the range of integrated values of the predicted processing amount. The threshold value and the second threshold value are smaller values as the priority of the new wireless service is higher,
The control unit determines the number of processing units to be executed by referring to the second database when receiving a request from the mobile station to provide a new wireless service to the mobile station.
The base station described in Appendix 1. (2)

(Appendix 3)
A request for a new wireless service from a mobile station includes a QCI (QoS Class Identifier),
In the first database, QCI is associated with a type of each wireless service.
The base station described in Appendix 1 or 2.

(Appendix 4)
A control method in a base station that includes a plurality of processing units that perform wireless communication with a plurality of mobile stations in a service area and that can independently execute processing of a wireless service for the mobile station,
Preparing a first database in which a plurality of types of priority and a predetermined prediction processing amount for processing each type of wireless service are associated with each of a plurality of types of wireless services for a mobile station;
Accumulating the estimated processing amount of the wireless service to be processed with reference to the first database,
In response to an increase or decrease in the integrated value of the predicted processing amount, control is performed so that the number of processing units that execute processing among the plurality of processing units increases or decreases, and a new radio that is newly processed by the mobile station When a request for providing a service is received from a mobile station, the first database is referred to, and the higher the priority of the new wireless service, the more easily the number of processing units that perform processing is likely to increase and it is more difficult to decrease. Including controlling to
A control method in a base station. (3)

(Appendix 5)
A second database for defining a condition regarding the range of the integrated value of the predicted processing amount according to the number of processing units to be processed, the upper limit value of the range of the integrated value of the predicted processing amount And a second threshold value that is a lower limit value of the range of integrated values of the predicted processing amount, and the first threshold value and the second threshold value are smaller as the priority of the new wireless service is higher. Providing a second database of values,
The controlling includes determining the number of processing units to be processed with reference to the second database when receiving a request for providing a new wireless service to the mobile station from the mobile station.
The control method in the base station as described in appendix 4.

(Appendix 6)
Preparing the second database includes preparing data in which a QCI (QoS Class Identifier) and a type of each wireless service are associated with each other,
The controlling includes referring to a QCI included in a request for a new wireless service from a mobile station;
The control method in the base station described in the appendix 4 or 5.

10-1, 10-2 Transceiver 20-1, 20-2 Baseband processing unit 30-1, 30-2 DSP
40 Control Unit 51 First Database Storage Unit 52 Second Database Storage Unit 60 Communication Interface

Claims (3)

A base station that performs wireless communication with a plurality of mobile stations in a service area to provide a wireless service,
A plurality of processing units capable of independently executing wireless service processing for mobile stations;
A storage unit that stores a first database in which a plurality of types of priority and a predetermined prediction processing amount for processing each type of wireless service are associated with each of a plurality of types of wireless services for a mobile station;
The processing unit that integrates the predicted processing amount of the wireless service to be processed with reference to the first database and executes the processing among the plurality of processing units according to the increase or decrease of the integrated value of the predicted processing amount. When the mobile station receives a request from the mobile station to control the number to increase or decrease and to provide the mobile station with a new wireless service to be processed, the priority of the new wireless service is referred to the first database. A control unit that performs control so that the number of processing units that execute processing is likely to increase and is less likely to decrease as the value increases.
A base station comprising: A second storage unit for storing a second database for defining a condition for the range of the integrated value of the predicted processing amount according to the number of processing units to be processed;
The second database includes a first threshold value that is an upper limit value of the range of integrated values of the predicted processing amount and a second threshold value that is a lower limit value of the range of integrated values of the predicted processing amount. The threshold value and the second threshold value are smaller values as the priority of the new wireless service is higher,
The control unit determines the number of processing units to be executed by referring to the second database when receiving a request from the mobile station to provide a new wireless service to the mobile station.
The base station according to claim 1. A control method in a base station that includes a plurality of processing units that perform wireless communication with a plurality of mobile stations in a service area and that can independently execute processing of a wireless service for the mobile station,
Preparing a first database in which a plurality of types of priority and a predetermined prediction processing amount for processing each type of wireless service are associated with each of a plurality of types of wireless services for a mobile station;
Accumulating the estimated processing amount of the wireless service to be processed with reference to the first database,
In response to an increase or decrease in the integrated value of the predicted processing amount, control is performed so that the number of processing units that execute processing among the plurality of processing units increases or decreases, and a new radio that is newly processed by the mobile station When a request for providing a service is received from a mobile station, the first database is referred to, and the higher the priority of the new wireless service, the more easily the number of processing units that perform processing is likely to increase and it is more difficult to decrease. Including controlling to
A control method in a base station.

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