WO2013029426A1 - Method, device and system for resource reallocation in cognitive radio system - Google Patents

Abstract

Disclosed in the present invention is a method for resource reallocation in a cognitive radio system. The method comprises: a network side requests a network element node for interface load information; when the resource reallocation is triggered, the network side reallocates the resource according to the interface load information returned from the network element node, alternatively, the network side receives the interface load information initiatively transmitted from the network element node; when the resource reallocation is triggered, the network side reallocates the resource according to the interface load information received from the network element node. Also disclosed in the present invention is a system for resource reallocation in the cognitive radio system. According to the technical solution of the present invention, the radio resource can be allocated more reasonably, and the spectrum usage efficiency can be increased, and the situation that the reallocated resource is inactivated can be avoided, and the success rate of the radio resource reallocation can be raised.

Description

 Method, device and system for reconfiguring cognitive radio system resources

 The present invention relates to the field of wireless communications, and in particular, to a method, device and system for reconfiguring cognitive radio system resources. Background technique

 With the continuous advancement of radio technology, a variety of radio services have emerged. However, the spectrum resources supported by the radio service are limited. In the face of increasing demand for bandwidth, spectrum resources are extremely tight. On the other hand, in the traditional fixed spectrum allocation mode, the utilization of spectrum resources is not. high.

 With the diversification of system requirements, the coexistence of multiple radio access technologies (RATs) is already the status quo, and the service distribution between different RATs is different for different operators in different geographical regions, even A big difference. From the current situation and development trend of network operation, operators hope to be able to uniformly manage different systems coexisting in the short-term or geographical location to adapt to the optimization of network traffic characteristics and resource utilization. Typically, in areas or times where a network has been installed, operators want to add a new generation of networks, such as adding to already deployed Second/Third Generation (2G/3G) networks. Long Term Evolution (LTE) network, and operators need to be able to dynamically manage hardware resources and wireless resources of existing systems and next-generation systems according to changes in cell traffic that reside in a specific area. New technology: Cognitive Radio (CR) technology.

Considering the specific regional cell settings, the traffic of different services in a particular system or in different systems may vary in one region on a daily basis. In addition, some cells may be crowded in some specific areas, have a high probability of call blocking, and are surrounded by multiple cells with low load. A low blocking probability is present. In addition, in the case where two or more RATs are deployed in the same area, the traffic of different services of each RAT may also have different distributions in time with respect to other RATs. For example, in a certain area, the Global System for Mobile Communication (GSM) and LTE systems are deployed at the same time. In a period of time, there are few GSM users, the traffic is small, and the load of the GSM system is low. The user is concentrated, the traffic is large, the resources are tight, and the network side of the LTE system is overloaded; in this scenario, the idle resources in the GSM system are a waste, and for the LTE system, the resources are too tight. In the cellular network, the reconfiguration module for resource reconfiguration is mainly used to monitor resource utilization and resource reconfiguration decisions on the base station side. In the TVWS (TV White Space) band system, the management resource reconfiguration is Central Control Point (CCP), which functions like a reconfiguration module.

 If the idle frequency resource of the GSM system is allocated to the LTE system, the load of the cell in the LTE system can be alleviated, the cell capacity is increased, and the system operation of the GSM is not affected, but resource borrowing is performed between systems or within the system. For example, when the LTE system is overloaded, although the idle resources of other cells or systems are borrowed, the reconfiguration module does not take into account the excessive signaling load of the core network, such as the Mobile Management Entity (MME). If the signaling load is high, or the load on other interfaces is too high, when the base station obtains new frequency resources, but the interface load is too high, the terminal cannot allocate services to the terminal normally. Some have a role, and there is a certain amount of waste. Summary of the invention

 In view of this, the main object of the present invention is to provide a method, device and system for reconfiguring cognitive radio system resources, which can realize reasonable allocation of radio resources.

 In order to achieve the above object, the technical solution of the present invention is achieved as follows:

 The present invention provides a method for reconfiguring cognitive radio system resources, including:

 The network side requests the interface load information from the network element node;

When the resource reconfiguration triggers, the network side according to the interface load information returned by the network element node, Re-allocation of resources.

 In the above method,

 The network side is a reconfiguration module or a central control node;

 The network element node is a base station or a core network node.

 In the above method, the network side requesting the interface load information of the network element node is:

 The network side sends the interface load request information to the base station managed by the base station according to the preset period; or, when the network side detects that the resource utilization of the base station exceeds a preset threshold, the network side sends the interface load request information to the base station;

 After receiving the interface load request information, the base station reports the interface load information to the network side.

 In the above method,

 The interface load information includes one or more of an uplink S1 interface, a downlink S1 interface, an Iu interface, an Iub interface, a Gb interface, an A interface, a transmission network layer TNL load information of the Abis interface, and a core network signaling load information;

 The core network signaling load information includes mobility management entity MME signaling load status information, service processing status information of the serving gateway SGW, signaling load status information of the GPRS service support node SGSN, and signaling load status information of the mobile switching center MSC. One or more of the above methods; in the foregoing method, the network side requesting the interface load information of the network element node is:

 The network side sends the interface load request information to the core network node. After receiving the interface load request information, the core network node reports the interface load information to the network side.

 In the above method, the resource reconfiguration trigger is:

 The network side monitors that the resource utilization of the base station in the service area exceeds a preset threshold; or

 The network side receives the resource allocation request message sent by the base station.

In the above method, the network side advances according to interface load information returned by the network element node. Before the reconfiguration of the row resources, the method further includes:

 The network side determines whether interface load information is received. When the interface load information is not received, the interface load request information is transmitted.

 In the above method, the network side performs resource reconfiguration according to the interface load information: when the interface load is higher than a preset threshold, the network side does not allocate a new idle spectrum to the base station; or the network side does not allocate a new one. The idle spectrum is sent to the base station, and the network element node is periodically configured or triggered to report the load information of the interface;

 When the interface load is not higher than the preset threshold, and the base station resource utilization exceeds a preset threshold, the network side allocates available idle spectrum resources to the base station.

 The present invention also provides a method for reconfiguring cognitive radio system resources, including:

 The network side receives the interface load information actively sent by the network element node;

 When the resource reconfiguration triggers, the network side performs resource reconfiguration according to the interface load information received from the network element node.

 In the above method,

 The network side is a reconfiguration module or a central control node;

 The network element node is a base station or a core network node.

 In the above method, the interface load information that is sent by the network side receiving network element node is: The base station actively sends a resource allocation request message to the network side, where the resource allocation request message carries the interface load information.

 In the above method,

 The interface load information includes one or more of an uplink S1 interface, a downlink S1 interface, an Iu interface, an Iub interface, a Gb interface, an A interface, a transmission network layer TNL load information of the Abis interface, and a core network signaling load information;

The core network signaling load information includes a mobility management entity MME signaling load status information, a service processing status information of the serving gateway SGW, and a signaling negative of the GPRS service support node SGSN. One or more of load state information, signaling load status information of the mobile switching center MSC. In the above method, the interface load information actively sent by the network side receiving network element node is: interface load information.

 In the above method, the resource reconfiguration trigger is:

 The network side monitors that the resource utilization of the base station in the service area exceeds a preset threshold; or

 The network side receives the resource allocation request message sent by the base station.

 In the above method, before the network side performs resource reconfiguration according to the interface load information received from the network element node, the method further includes:

 The network side determines whether interface load information is received. When the interface load information is not received, the interface load request information is transmitted.

 In the above method, the network side performs resource reconfiguration according to the interface load information: when the interface load is higher than a preset threshold, the network side does not allocate a new idle spectrum to the base station; or the network side does not allocate a new one. The idle spectrum is sent to the base station, and the network element node is periodically configured or triggered to report the load information of the interface;

 When the interface load is not higher than the preset threshold, and the base station resource utilization exceeds a preset threshold, the network side allocates available idle spectrum resources to the base station.

 The present invention also provides a reconfiguration device for a cognitive radio system resource, including: a requesting unit, a reconfiguration unit;

 a requesting unit, configured to request interface load information from the network element node;

 And a reconfiguration unit, configured to perform resource reconfiguration according to the interface load information returned by the network element node when the resource reconfiguration triggers.

 In the above device,

The reconfiguration device is located on the network side; The reconfiguration device is a reconfiguration module or a central control node;

 The network element node is a base station or a core network node.

 In the above device, the reconfiguration device further includes:

 a determining unit, configured to: before the reconfiguration unit performs resource reconfiguration according to the interface load information returned by the network element node, determine whether interface load information is received; and when the interface load information is not received, triggering the request unit The interface load request information is sent.

 The present invention also provides a reconfiguration device for a cognitive radio system resource, including: a receiving unit, a reconfiguration unit;

 a receiving unit, configured to receive interface load information that is sent by the network element node;

 The reconfiguration unit performs resource reconfiguration according to the interface load information received by the receiving unit from the network element node when the resource reconfiguration triggers.

 In the above device,

 The reconfiguration device is located on the network side;

 The reconfiguration device is a reconfiguration module or a central control node;

 The network element node is a base station or a core network node.

 In the above device, the reconfiguration device further includes:

 a determining unit, configured to: according to the interface load information received by the receiving unit from the network element node, before the resource reconfiguration, determine whether the interface load information is received; and when the interface load information is not received, The trigger requesting unit sends the interface load request information, and the requesting unit is configured to send the interface load request information to the network element node after receiving the trigger of the determining unit.

 The present invention also provides a reconfiguration system for cognitive radio system resources, including: a network side, a network element node;

The network side is configured to request the interface load information from the network element node, and is further configured to perform resource reconfiguration according to the interface load information returned by the network element node when the resource reconfiguration triggers; a network element node, configured to receive a request sent by the network side, and return an interface load signal to the network side, in the foregoing system,

 The network side is a reconfiguration module or a central control node;

 The network element node is a base station or a core network node

 In the above system,

 The network side is further configured to: determine, according to interface load information returned by the network element node, whether to receive interface load information before performing resource reconfiguration; and when not receiving the interface load information, perform interface load request The transmission of information.

 The present invention also provides a reconfiguration system for cognitive radio system resources, including: a network side, a network element node;

 a network element node, configured to actively send interface load information to the network side;

 The network side is configured to receive the interface load information that is sent by the network element node, and is further configured to perform resource reconfiguration according to the interface load information received from the network element node when the resource reconfiguration triggers.

 In the above system,

 The network side is a reconfiguration module or a central control node;

 The network element node is a base station or a core network node.

 In the above system,

 The network side is further configured to: determine, according to the interface load information received from the network element node, whether to receive the interface load information before performing resource reconfiguration; and when the interface load information is not received, perform an interface load request. The transmission of information.

According to the method, device and system for reconfiguring cognitive radio system resources provided by the present invention, the network side requests the interface load information from the network element node; when the resource reconfiguration triggers, the network side according to the interface load information returned by the network element node The resource side is reconfigured, or the network side receives the interface load information actively sent by the network element node; when the resource reconfiguration triggers, the network side according to the slave network element node The received interface load information is used to perform resource reconfiguration. Therefore, when the resource reconfiguration triggers, the present invention performs resource reconfiguration according to the obtained interface load information, thereby achieving more reasonable allocation of radio resources and improving spectrum utilization. It avoids the situation that the reconfigured radio resources do not work, and improves the success rate of radio resource reconfiguration. DRAWINGS

 1 is a schematic flowchart of a method for reconfiguring a cognitive radio system resource according to the present invention; FIG. 2 is a schematic flowchart of Embodiment 1 of a method for reconfiguring a cognitive radio system resource according to the present invention;

 3 is a schematic flow chart of Embodiment 2 of a method for reconfiguring a cognitive radio system resource according to the present invention;

 4 is a schematic flow chart of Embodiment 3 of a method for reconfiguring a cognitive radio system resource according to the present invention;

 5 is a schematic flow chart of Embodiment 4 of a method for reconfiguring a cognitive radio system resource according to the present invention;

 6 is a schematic flow chart of Embodiment 5 of a method for reconfiguring a cognitive radio system resource according to the present invention;

 7 is a schematic flow chart of Embodiment 6 of a method for reconfiguring a cognitive radio system resource according to the present invention;

 8 is a schematic flow chart of Embodiment 7 of a method for reconfiguring a cognitive radio system resource according to the present invention;

 9 is a schematic structural diagram of Embodiment 1 of a reconfiguration system for cognitive radio system resources according to the present invention;

FIG. 10 is a schematic structural diagram of Embodiment 2 of a reconfiguration system for a cognitive radio system resource according to the present invention. detailed description

 The basic idea of the present invention is: the network side requests the interface load information from the network element node; when the resource reconfiguration triggers, the network side performs resource reconfiguration according to the interface load information returned by the network element node, or receives the network side. The interface load information actively sent by the network element node; when the resource reconfiguration triggers, the network side performs resource reconfiguration according to the interface load information received from the network element node.

 The present invention will be further described in detail below with reference to the accompanying drawings.

 1 shows a flow of a method for reconfiguring a cognitive radio system resource according to the present invention. As shown in FIG. 1, the method includes the following steps:

 Step 101: The network side acquires interface load information from the network element node.

 Specifically, the network side is a reconfiguration module or a central control node; and the network element node is a base station or a core network node. The reconfiguration module is a logical function module, and may be located in a network management side node, such as a network management system (NMS), an element management system (EMS), and a core network node, such as an MME; The base station may be an eNB of an LTE system; a NodeB of a Universal Mobile Telecommunications System (UMTS), a Radio Network Controller (RNC), and a Base Station Controller (BSC) of the GSM. Base Transceiver Station (BTS); the core network node may be an MME of the LTE system, a Serving Gateway (SGW; a GPRS Service Support Node (SGSN) of the UMTS system, and a GPRS support of the gateway Gateway (GPRS GPRS Support Node, GGSN); GSM system Mobile Switching Center (MSC), Media Gateway (Media GateWay, MGW).

Here, the interface load information includes an uplink SI interface, a downlink SI interface, an Iu interface, an Iub interface, a Gb interface, an A interface, a Transport Network Layer (TLL) load information of the Abis interface, and a core network signaling load information. One or more of the core network signaling The load information includes one or more of MME signaling load status information, service processing status information of the SGW, signaling load status information of the SGSN, and signaling load status information of the MSC.

 The TNL load information of the uplink S1 interface, the downlink S1 interface, the Iu interface, the Iub interface, the Gb interface, the A interface, and the Abis interface may be identified as follows: Low Load, Medium Load, High Load (High Load), overload (OverLoad), etc. The core network signaling load information may be represented by a request reduction signaling indication message of the core network. For example, the request reduction signaling indication message sent by the MME is used to indicate that the MME requests the base station to reduce the signaling proportion, and when the request reduces the signaling indication. When the message is 90%, it indicates that the MME requests the base station to reduce the signaling ratio to be 90%, indicating that the current core network is in a high load state; when the request reduction signaling indication message is 10%, indicating that the MME requests the base station to reduce signaling. The ratio is 10%, indicating that the current core network is in a lower load state; when the base station does not receive the request reduction signaling indication message sent by the MME, the core network is in a normal state, and there is no need to reduce the load.

The manner in which the network side obtains the interface load information from the network element node includes the following: In the first type, when the network element node is the base station, the network side sends the interface load request information to the base station in the service area; the base station receives the After the interface load request information, the interface load information is reported to the network side; the network side sends the interface load request information to the base station, which may be periodic transmission or triggered transmission. For periodic transmission, the network side follows the preset period to itself. The base station in the service area sends the interface load request information; for the triggered transmission, when the network side detects that the resource utilization of the base station exceeds a preset threshold, the network side sends the interface load request information to the base station; for example, when the reconfiguration module Monitoring that the resource utilization of a base station in its own service area exceeds 90%, that is, the base station has allocated 90% of resources, and 10% of available free resources, or less than 10% of available free resources, Sending interface load request information to the base station; second, when the network element node is a base station, the network side does not need to To send the interface load request information to the base station in the service area, the base station may send a resource allocation request message to the network side, where the resource allocation request message carries the interface load information and the radio resources in the base station. Information such as source utilization;

 Here, when the base station does not receive the request reduction signaling indication message sent by the core network node, the base station may not include the core network signaling load status information or the core network information in the interface load information sent to the network side. Let the load status information be set to null;

 The third type, when the network element node is the core network node, the core network node may send the interface load information to the network side by using the method of periodically sending or triggering sending, where, for periodic transmission, the core network node may be configured in advance. The core network node actively sends the interface load information to the network side according to the pre-configured period. For the triggered transmission, the capacity of the core network node exceeds the set threshold, or the number of base stations or users accessed by the core network node exceeds the setting. The core network node actively sends the interface load information to the network side; wherein, the core network node may be the MME, the SGW, the SGSN, and the MSC, and the interface load information includes the MME signaling load status information, the SGW service processing status information, One or more of signaling load status information of the SGSN and signaling load status information of the MSC;

 When the network element node is the core network node, the network side sends the interface load request information to the core network node. After receiving the interface load request information, the core network node reports the interface load information to the network side.

 Step 102: When the resource reconfiguration triggers, the network side performs resource reconfiguration according to the interface load information.

 Specifically, in this step, the resource reconfiguration triggering is specifically: the network side monitors that the resource utilization of the base station in the service area exceeds a preset threshold; or receives the resource allocation request message sent by the base station.

When the resource reconfiguration triggers, the network side may further determine whether the interface load information is received, and when the interface load information is not received, the interface load request information is sent; where the network side may directly obtain the uplink S1 from the base station. One or more of the TNL load information of the interface, the downlink S1 interface, the Iu interface, the Iub interface, the Gb interface, the A interface, and the Abis interface When the core network signaling the load information, the interface load request information is sent to the base station; the network side obtains the uplink S1 interface, the downlink S1 interface, the Iu interface, the Iub interface, the Gb interface, the A interface, and the TNL of the Abis interface from the base station. One or more of the load information, when acquiring the core network signaling load information from the core network node, respectively, the interface load request information is sent to the base station and the core network node, such as the MME, the SGW, and the like.

 When the network side performs the resource reconfiguration according to the interface load information, when the interface load is higher than the preset threshold, it indicates that the interface load is high at this time. Even if a new spectrum resource is allocated to the base station, the base station cannot be normally Terminal service, therefore, the network side does not allocate a new idle spectrum to the base station at this time; or, the network side does not allocate a new idle spectrum to the base station, and configures the network element node to periodically or event trigger the interface load information; Specifically, when the network side monitors that the resource utilization of the base station exceeds a preset threshold, and the interface load is not higher than a preset threshold, the available resource spectrum is allocated to the base station. It should be understood that when the network side can also obtain the core network signaling load information from the core network related entity, the core network related entity periodically or event triggers the reporting of the core network signaling load information, where Event triggering can refer to situations where the core network is under heavy load.

 Embodiment 1

 FIG. 2 is a flowchart of Embodiment 1 of a method for reconfiguring a cognitive radio system resource according to the present invention. As shown in FIG. 2, in this embodiment, when the LTE system is specifically used, the network side is a description of the reconfiguration module. Including the following steps:

 Step 201, the reconfiguration module monitors the resource utilization of the base station, and receives the resource allocation request message. When the resource reconfiguration triggers, step 202 is performed;

 Here, the resource reconfiguration triggering is specifically that the reconfiguration module monitors that the resource utilization of the base station in the service area exceeds a preset threshold; or the reconfiguration module receives the resource allocation request message sent by the base station.

Step 202: The reconfiguration module determines whether interface load information is received, and if yes, performs steps 204, otherwise step 203 is performed.

 Step 203: The reconfiguration module acquires interface load information.

 The interface load information includes uplink and/or downlink S1 interface TNL load information and/or core network signaling load information; the core network signaling load information includes MME signaling load status information, SGW service processing status information, and the like;

 Here, the uplink and/or downlink S1 interface TNL load information can be identified as follows: low load, medium load, high load, overload, and the like. The core network signaling load information may be represented by a request reduction signaling indication message of the core network. For example, the request reduction signaling indication message sent by the MME is used to indicate that the MME requests the base station to reduce the signaling proportion, and when the request reduces the signaling indication. When the message is 90%, it indicates that the MME requests the base station to reduce the signaling ratio to be 90%, indicating that the current core network is in a high load state; when the request reduction signaling indication message is 10%, indicating that the MME requests the base station to reduce signaling. The ratio is 10%, indicating that the current core network is in a lower load state; when the base station does not receive the request reduction signaling indication message sent by the MME, the core network is in a normal state, and there is no need to reduce the load.

 The method for the reconfiguration module to obtain the interface load information includes: the reconfiguration module sends the interface load request information to the base station in the service area according to the preset period, or when the resource utilization of the base station is monitored to exceed the preset threshold, The base station sends the interface load request information; for example, when the reconfiguration module detects that the resource utilization of a base station in the service area exceeds 90%, that is, the base station has allocated 90% of resources, and 10% is available. If the idle resource, or the available idle resource is less than 10%, send the interface load request information to the base station; after receiving the interface load request information, the base station reports the interface load information to the reconfiguration module; or The reconfiguration module does not need to send the interface load request information to the base station in the service area, and the base station sends a resource allocation request message to the reconfiguration module, where the resource allocation request message carries the interface load information and the base. Information such as the utilization of radio resources in the station;

Here, when the base station does not receive the request reduction signaling indication message sent by the MME, The base station may not include the MME signaling load status information or set the MME signaling load status information to be empty in the interface load information sent to the reconfiguration module.

 In addition, the core network node may send the interface load information to the reconfiguration module in a periodic transmission or triggered transmission manner, and the reconfiguration module receives the interface load information sent by the core network node; or, the reconfiguration module sends an interface to the core network node. The load request information; after receiving the interface load request information, the core network node reports the interface load information to the reconfiguration module.

 Step 204, the reconfiguration module determines whether to immediately perform resource reconfiguration, and if so, step 206 is performed, otherwise step 205 is performed;

 Here, the reconfiguration module determines whether it is suitable to allocate a new idle spectrum to the base station according to the resource utilization situation of the base station and the interface load status; specifically, when the reconfiguration module monitors that the resource utilization of the base station exceeds a preset If the threshold value is not higher than the preset threshold, step 206 is performed; otherwise, step 205 is performed.

 Step 205, the reconfiguration module continues to monitor the interface load status, when it is found that the reconfiguration condition is met, step 206 is performed;

 Here, the reconfiguration module continues to monitor the interface load status for the reconfiguration module to configure the base station periodic or event trigger reporting interface load information; it should be understood that when the reconfiguration module can also obtain the core network signaling load information from the core network related entity The core network related entity periodically or event triggers the reporting of the core network signaling load information. Here, the event triggering may refer to a situation in which the core network is in a high load state.

 The step further includes: the reconfiguration module continues to monitor the resource utilization of the base station; the reconfiguration module monitors that the resource utilization of the base station exceeds a preset threshold, and the interface load information is not higher than a preset threshold, that is, the reconfiguration condition is met. , go to step 206.

 Step 206: The reconfiguration module performs resource reconfiguration.

 Specifically, the reconfiguration module allocates an available idle resource spectrum to the base station.

Embodiment 2 FIG. 3 is a flowchart of a second embodiment of a method for reconfiguring a cognitive radio system resource according to the present invention. As shown in FIG. 3, in the embodiment, the network side is specifically a central control node, which is located at the network management side or the core network side. Monitoring the resource utilization of the base station in its own service area and the interface load information; including the following steps:

 Steps 301-32, the central control node monitors the network operation status within a preset period of time, such as a preset monitoring time period T, and learns the resource utilization situation of the base station in the service area, for example, monitoring that 60% of the current allocation has been made. Resources, or 40% of available idle resources, when the resource utilization of the monitored base station reaches a certain threshold set by the network side, such as the resource utilization of the base station has reached 90%, or the available idle resources are less than 10 If the requested service is too much and there is no available resource, the central control node determines whether the interface load information is received. If yes, go to step 304, otherwise go to step 303.

 Step 303: The central control node sends the interface load request information to the base station. After receiving the interface load request information, the base station reports the uplink and/or downlink S1 interface TNL load information and the signaling load information of the core network to the central control through the interface load information response. Node

 The TNL load information is identified by one of the following: low load, medium load, high load, overload, etc. The information status of the core network is represented by the core network's request reduction signaling ratio. For example, the MME requests the base station to reduce the signaling ratio by 90%, indicating that the core network is now in a high load state. If the request is reduced by 10%, the core network is in a lower load state.

 If the base station does not receive the MME's reduced signaling indication message (such as OverLoad Start), the base station does not carry the core network signaling load in the interface load information or is set to null when reported to the central control node. This indicates that the core network is in a normal state and does not reduce the load demand.

Steps 304-306, the central control node receives the interface load information reported by the base station. If the load is too high, the central control node performs step 305, and does not allocate a new idle spectrum to the base station; or, the central control node does not allocate a new idle spectrum. To the base station, the base station is configured to periodically or event-triggered reporting interface load information; when the central control node learns that the interface load of the base station is low, and the resources are If the utilization is still high, step 306 is performed to allocate a new idle spectrum resource, such as a TV band resource, to the base station.

 Here, the lower interface load may be the uplink and/or downlink S1 interface. When the TNL load information is Low Load or lower than the preset threshold, the central control node may configure a new idle spectrum resource to the base station.

 Step 307: After obtaining the new available spectrum resource, the base station performs reconfiguration, and sends context information about the new carrier frequency to the terminal.

 Embodiment 3

 4 is a flowchart of a third embodiment of a method for reconfiguring a cognitive radio system resource according to the present invention. As shown in FIG. 4, in this embodiment, a reconfiguration module is located on a network management side or a core network side, and a base station allocates resources by sending resources. The request message reports the interface load information to the reconfiguration module. The method includes the following steps: Step 401: The base station allocates channel resources for the connection establishment request of the terminal user, and when the user requests too many resources to reach a preset threshold, such as a user request When the resources have reached 95% of the base station allocateable resources, the base station sends a resource allocation request message to the reconfiguration module.

 The resource allocation request message includes resource utilization information of the base station, such as a resource utilization rate of the base station of 95%, and interface load information.

 The threshold may be set by the base station itself or by a reconfiguration module.

 If the base station does not receive the request reduction signaling indication message of the MME, the base station may not carry the core network signaling load information or be set to null when reported to the reconfiguration module. At this point, the core network is in a normal state and there is no load reduction.

 Step 402: After receiving the resource allocation request message of the base station, the reconfiguration module analyzes the resource utilization of the base station and the core network load status corresponding to the base station. If the resource utilization of the base station does reach a limit, such as High Load or Over Load, and the core network load is low or the base station reporting signaling load requirement is not reduced, the reconfiguration module acquires available spectrum resources.

Here, if there is no suitable spectrum resource in the system, the reconfiguration module will be heavier than other systems. The matching module negotiates available spectrum resources. In this embodiment, the reconfiguration module of the LTE system negotiates available spectrum resources with the reconfiguration module of the UMTS system. After the reconfiguration module obtains the available spectrum resources, the resource allocation request response message is sent to the base station, and the available spectrum information, such as carrier frequency, bandwidth, power, and radio resource information, is included.

 Step 403: After obtaining the new available spectrum resource, the base station performs reconfiguration, and sends context information about the new carrier frequency to the terminal.

 Further, for the resource reconfiguration of the UMTS or GSM system, the process is as described above, except that the interface load information is the Iu interface, the Iub interface, the Gb interface, the A interface, the TNL load information of the Abis interface, and the core network signaling load information. One or more of the core network nodes are SGSNs or MSCs.

 Embodiment 4

 FIG. 5 is a flowchart of Embodiment 4 of the method for reconfiguring the cognitive radio system resources of the present invention. As shown in FIG. 5, in this embodiment, the reconfiguration module is located on the network management side or the core network side, and the base station itself is based on the interface load. The information determines whether resource reconfiguration is required; the following steps are included:

 Step 501: The base station allocates resources for the connection establishment request of the terminal user. When the user requests increase, the resources available to the base station are reduced. When the base station resource utilization exceeds a threshold, the base station learns that the hardware load is too high or the TNL load of the S1 interface is excessive. If the MME sends a request reduction signaling indication message to the base station, such as Overload Start, the base station temporarily does not perform a resource allocation request.

 When the resource utilization of the base station is tight, and the hardware load is not high, such as Low Load or Medium Load, and the SI interface TNL load is not high, and the MME does not send the OverLoad Start command to the base station, the base station sends a resource allocation request to the reconfiguration module. .

 The resource allocation request message includes: radio resource utilization information of the base station, and interface load information.

The TNL load information is identified by one of the following: Low Load, Medium Load, High Load, Over Load. The information status of the core network is reduced by the core network request signaling ratio table. If the MME requests the base station to reduce the signaling ratio by 90%, the core network is now in a high load state. If the request is reduced by 10%, the core network is in a lower load state.

 Step 502: The reconfiguration module receives the resource allocation request of the base station, acquires idle spectrum resources, and allocates available resources to the base station according to the load information of the interface.

 Step 503: After obtaining the new available spectrum resource, the base station performs reconfiguration, and sends the context information about the new carrier frequency to the terminal.

 Embodiment 5

 FIG. 6 is a flowchart of Embodiment 5 of a method for reconfiguring a cognitive radio system resource according to the present invention. As shown in FIG. 6, in this embodiment, a reconfiguration module is located at a base station; and the following steps are included:

 Step 601: The base station allocates resources for the connection establishment request of the terminal user. When the user requests increase, the resources available to the base station are reduced. When the base station resource utilization exceeds a threshold, the base station learns that the hardware load is too high or the TNL load of the S1 interface is excessive. If the MME sends a request reduction signaling indication message to the base station, such as Overload Start, the reconfiguration module does not perform resource allocation.

 When the resource utilization of the base station is tight, and the hardware load is not high, such as Low Load or Medium Load), and the SI interface TNL load is not high, and the MME does not send the OverLoad Start command to the base station, the reconfiguration module can coordinate resources for resources. Rematch.

 Step 602: The base station has available spectrum resources or re-allocates the resources to the other base stations, and sends the context information about the new carrier frequency to the terminal.

 Embodiment 6

 FIG. 7 is a flowchart of the sixth embodiment of the method for reconfiguring the cognitive radio system resources of the present invention. As shown in FIG. 7, in the embodiment, the base station side actively requests the capacity status of the core network side, and includes the following steps:

 Steps 701-702: The base station side resource utilization exceeds a threshold. If the allocated resources account for 90% of the total resources, the base station actively requests the MME to acquire the load status information of the core network side.

Step 703: After receiving the load status request of the base station, the MME sets the current capacity status, for example: The acceptable SI signaling connection capacity, and/or the signaling load level on the MME side, such as: Low Load, Medium Load, High Load, Over Load, etc., are sent to the base station.

 Steps 704-705, the base station side according to the load status of the MME, if the S1 signaling connection capacity acceptable to the MME side is small, for example, it can also accept signaling connections of 100 UEs; or the load is high, such as High Load or Over Load. The base station does not send a resource allocation request to the reconfiguration module, and can load the UE to the neighboring cell.

 If the S1 signaling connection capacity accepted by the MME side is large, for example, the signaling connection of 1000 UEs can be accepted; or the load is low, such as Low Load or Medium Load, the base station sends a resource allocation request to the reconfiguration module.

 Steps 706-708, the reconfiguration module acquires idle spectrum resources according to the received resource allocation request, allocates available resources to the base station according to the interface load information, and receives the available idle spectrum resources allocated by the reconfiguration module. Match, and notify the end user.

 Further, the request process for the core network node is the SGSN and the MSC is as described above, and the interface load information is the load information of the Iu interface, the Iub interface, the Gb interface, the A interface, the Abis interface, and the core network signaling load information. One or more of the ones.

 Example 7

 FIG. 8 is a flowchart of a seventh embodiment of a method for reconfiguring a cognitive radio system resource according to the present invention. As shown in FIG. 8, in the embodiment, the core network side notifies the base station of its own capacity status, which includes the following steps:

 Steps 801-802, the MME provides mobility management and user context management for the terminal user established by the connection. When a large number of terminals access, the MME processing load becomes large. When the MME can accept the S1 signaling connection capacity is less than the threshold, For example, the signaling connection of 100 UEs; or the signaling load exceeds a certain level, for example, when the High Load is performed, the MME notifies the base station of the signaling load status of the current MME side.

Further, the MME may also periodically notify the signaling load status information on the MME side. To the base station.

 Steps 803-804, after the base station learns the signaling load status on the MME side, when the radio resource utilization of the base station side exceeds the threshold, combined with the signaling load information of the MME side, if the S1 signaling connection capacity acceptable to the MME side is small, such as : It can also accept the signaling connection of 100 UEs; or the load is high, such as High Load or Over Load, the base station does not send a resource allocation request to the reconfiguration module, and can load the UE to the neighboring cell;

 If the MME side has a large S1 signaling connection capacity, for example, it can also accept 1000 UE signaling connections; or if the load is low, such as Low Load or Medium Load, the base station sends a resource allocation request to the reconfiguration module;

 Step 805-807,, the reconfiguration module obtains the idle spectrum resource according to the received resource allocation request, and performs resource reconfiguration operation according to the resource utilization status of the base station and the interface load information, and allocates available resources to the base station.

 The base station obtains new available idle spectrum resources and performs reconfiguration to notify the end user. To achieve the above method, the present invention also provides a reconfiguration system for cognitive radio system resources, and FIG. 9 shows a structure of Embodiment 1 of the reconfiguration system for cognitive radio system resources of the present invention, as shown in FIG. The reconfiguration system includes a network side 91 and a network element node 92;

 The network side 91 is configured to request the interface load information from the network element node 92, and is further configured to: when the resource reconfiguration triggers, perform resource reconfiguration according to the interface load information returned by the network element node 92; the network element node 92, It is used to receive the request sent by the network side 91, and return the interface load information to the network side.

 The network side is a reconfiguration module or a central control node; the network element node is a base station or a core network node.

 In the system,

The network side 91 is further configured to determine, according to interface load information returned by the network element node 92, whether to receive interface load information before performing resource reconfiguration; when the interface is not received When the port load information is generated, the interface load request information is transmitted.

 The network side 91 further includes a requesting unit 910 and a reconfiguration unit 911. The requesting unit 910 is configured to request interface load information from the network element node.

 The reconfiguration unit 911 is configured to perform resource reconfiguration according to the interface load information returned by the network element node when the resource reconfiguration triggers.

 The network side 91 also includes:

 The determining unit 912 is configured to determine whether the interface load information is received before the reconfiguration unit 911 performs resource reconfiguration according to the interface load information returned by the network element node 92, and is further configured to: when not receiving the interface load information, The trigger request unit 910 performs transmission of the interface load request information.

 The present invention also provides a reconfiguration system for cognitive radio system resources, and FIG. 10 shows a structure of a second embodiment of a reconfiguration system for cognitive radio system resources of the present invention. As shown in FIG. 10, the reconfiguration system The network side 101 and the network element node 102 are included;

 The network element node 102 is configured to actively send interface load information to the network side 101.

 The network side 101 is configured to receive the interface load information that is sent by the network element node 102, and is further configured to perform resource reconfiguration according to the interface load information received from the network element node 102 when the resource reconfiguration triggers.

 The network side is a reconfiguration module or a central control node; the network element node is a base station or a core network node;

 In the system, the network side 101 is further configured to determine, according to interface load information received from the network element node 102, whether to receive interface load information before performing resource reconfiguration; when the interface load information is not received When the interface load request information is sent.

The network side 101 further includes: a receiving unit 1011, a reconfiguration unit 1012, where the receiving unit 1011 is configured to receive interface load information that is sent by the network element node 102, and the reconfiguration unit 1012, when the resource reconfiguration triggers, according to the Receiving unit 1011 from a network element node 102 received interface load information, resource reconfiguration.

 The network side 101 also includes:

 The determining unit 1013 is configured to determine, by the reconfiguration unit 1012, whether to receive the interface load information before performing resource reconfiguration according to the interface load information received by the receiving unit 1011 from the network element node 102. When the information is loaded, the trigger request unit 1014 performs the transmission of the interface load request information;

 The requesting unit 1014 is configured to send the interface load request information to the network element node 102 after receiving the trigger of the determining unit 1013.

 It should be understood that the reconfiguration module or the central control node of the reconfiguration system may be built in the base station. In this case, the specific functions of the reconfiguration system are substantially the same as those described above, and details are not described herein.

 The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim  A method for reconfiguring a cognitive radio system resource, the method comprising: the network side requesting interface load information from a network element node;  When the resource reconfiguration triggers, the network side performs resource reconfiguration according to the interface load information returned by the network element node.  2. The method of claim 1 wherein  The network side is a reconfiguration module or a central control node;  The network element node is a base station or a core network node.  The method according to claim 2, wherein the network side network element node requests the interface load information as:  The network side sends the interface load request information to the base station managed by the base station according to the preset period; or, when the network side detects that the resource utilization of the base station exceeds a preset threshold, the network side sends the interface load request information to the base station;  After receiving the interface load request information, the base station reports the interface load information to the network side.  4. The method of claim 3, wherein  The interface load information includes one or more of an uplink S1 interface, a downlink S1 interface, an Iu interface, an Iub interface, a Gb interface, an A interface, a transmission network layer TNL load information of the Abis interface, and a core network signaling load information;  The core network signaling load information includes mobility management entity MME signaling load status information, service processing status information of the serving gateway SGW, signaling load status information of the GPRS service support node SGSN, and signaling load status information of the mobile switching center MSC. One or more of them.  The method according to claim 2, wherein the network side network element node requests the interface load information as: The network side sends interface load request information to the core network node; the core network node receives After the interface load request information, the interface load information is reported to the network side.  The method according to claim 2, wherein the resource reconfiguration triggering is: the network side detects that the resource utilization of the base station in the service area exceeds a preset threshold; or  The network side receives the resource allocation request message sent by the base station.  The method according to claim 2, wherein, before the network side performs resource reconfiguration according to the interface load information returned by the network element node, the method further includes: determining, by the network side, whether the network side receives the The interface load information is sent when the interface load information is not received.  The method according to any one of claims 1 to 7, wherein the network side performs resource reconfiguration according to the interface load information:  When the interface load is higher than the preset threshold, the network side does not allocate a new idle spectrum to the base station; or the network side does not allocate a new idle spectrum to the base station, and configures the network element node to periodically or event trigger the reporting interface load information;  When the interface load is not higher than the preset threshold, and the base station resource utilization exceeds a preset threshold, the network side allocates available idle spectrum resources to the base station.  A method for reconfiguring a cognitive radio system resource, the method comprising: receiving, by a network side, interface load information actively sent by a network element node;  When the resource reconfiguration triggers, the network side performs resource reconfiguration according to the interface load information received from the network element node.  10. The method of claim 9 wherein:  The network side is a reconfiguration module or a central control node;  The network element node is a base station or a core network node. The method according to claim 10, wherein the interface load information actively sent by the network side receiving network element node is: The base station actively sends a resource allocation request message to the network side, where the resource allocation request message carries the interface load information.  12. The method of claim 11 wherein:  The interface load information includes one or more of an uplink S1 interface, a downlink S1 interface, an Iu interface, an Iub interface, a Gb interface, an A interface, a transmission network layer TNL load information of the Abis interface, and a core network signaling load information;  The core network signaling load information includes mobility management entity MME signaling load status information, service processing status information of the serving gateway SGW, signaling load status information of the GPRS service support node SGSN, and signaling load status information of the mobile switching center MSC. One or more of them.  The method according to claim 10, wherein the interface load information actively sent by the network side receiving network element node is: interface load information.  The method according to claim 10, wherein the resource reconfiguration triggering is: the network side detects that the resource utilization of the base station in the service area exceeds a preset threshold; or  The network side receives the resource allocation request message sent by the base station.  The method according to claim 10, wherein, before the network side performs resource reconfiguration according to the interface load information received from the network element node, the method further includes: determining, by the network side, whether the network side receives the The interface load information is sent when the interface load information is not received.  The method according to any one of claims 9 to 15, wherein the network side performs resource reconfiguration according to the interface load information: When the interface load is higher than the preset threshold, the network side does not allocate a new idle spectrum to the base station; or the network side does not allocate a new idle spectrum to the base station, and configures the network element node to periodically or evently touch. Sending report interface load information;  When the interface load is not higher than the preset threshold, and the base station resource utilization exceeds a preset threshold, the network side allocates available idle spectrum resources to the base station.  A reconfiguration device for a cognitive radio system resource, the device comprising: a request unit, a reconfiguration unit;  a requesting unit, configured to request interface load information from the network element node;  And a reconfiguration unit, configured to perform resource reconfiguration according to the interface load information returned by the network element node when the resource reconfiguration triggers.  18. The reconfiguration device of claim 17 wherein:  The reconfiguration device is located on the network side;  The reconfiguration device is a reconfiguration module or a central control node;  The network element node is a base station or a core network node.  19. The reconfiguration apparatus of claim 17, wherein the reconfiguration apparatus further comprises:  a determining unit, configured to: before the reconfiguration unit performs resource reconfiguration according to the interface load information returned by the network element node, determine whether interface load information is received; and when the interface load information is not received, triggering the request unit The interface load request information is sent.  20. A reconfiguration device for a cognitive radio system resource, the device comprising: a receiving unit, a reconfiguration unit;  a receiving unit, configured to receive interface load information that is sent by the network element node;  The reconfiguration unit performs resource reconfiguration according to the interface load information received by the receiving unit from the network element node when the resource reconfiguration triggers.  21. The reconfiguration device of claim 20, wherein  The reconfiguration device is located on the network side; The reconfiguration device is a reconfiguration module or a central control node; The network element node is a base station or a core network node.  22. The reconfiguration apparatus according to claim 20, wherein the reconfiguration apparatus further comprises:  a determining unit, configured to: according to the interface load information received by the receiving unit from the network element node, before the resource reconfiguration, determine whether the interface load information is received; and when the interface load information is not received, The trigger requesting unit sends the interface load request information, and the requesting unit is configured to send the interface load request information to the network element node after receiving the trigger of the determining unit.  A system for reconfiguring a cognitive radio system resource, the system comprising: a network side, a network element node;  The network side is configured to request the interface load information from the network element node, and is further configured to perform resource reconfiguration according to the interface load information returned by the network element node when the resource reconfiguration triggers;  The network element node is configured to receive a request sent by the network side, and return an interface load signal to the network side. 24. The system of claim 23, wherein  The network side is a reconfiguration module or a central control node;  The network element node is a base station or a core network node.  25. The system of claim 23, wherein  The network side is further configured to: determine, according to interface load information returned by the network element node, whether to receive interface load information before performing resource reconfiguration; and when not receiving the interface load information, perform interface load request The transmission of information.  26. A reconfiguration system for a cognitive radio system resource, the system comprising: a network side, a network element node;  a network element node, configured to actively send interface load information to the network side; The network side is configured to receive interface load information that is sent by the network element node; and is also used in the resource When the reconfiguration triggers, the resource reconfiguration is performed according to the interface load information received from the network element node. 27. The system of claim 26, wherein:  The network side is a reconfiguration module or a central control node;  The network element node is a base station or a core network node.  28. The system of claim 26, wherein  The network side is further configured to: determine, according to the interface load information received from the network element node, whether to receive the interface load information before performing resource reconfiguration; and when the interface load information is not received, perform an interface load request. The transmission of information.