WO2013000320A1

WO2013000320A1 - Method and system for reallocating cognitive radio system resource

Info

Publication number: WO2013000320A1
Application number: PCT/CN2012/074202
Authority: WO
Inventors: 刘星; 李岩; 任龙涛; 周栋; 苗婷; 张力
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-06-30
Filing date: 2012-04-17
Publication date: 2013-01-03
Also published as: CN102857973A

Abstract

Provided are a method and system for reallocating cognitive radio system resource, the method comprising: a reallocation module on a network-side node runs a reallocation algorithm to obtain a reallocation command according to a received spectrum adjustment instruction or the network status of each radio communication system monitored by the reallocation module itself; sending the reallocation command to a base station, and the base station executes the reallocation command to reallocate the resource. The method and system for reallocating cognitive radio system resource of the present invention coordinate and reallocate the spectrum resources via the reallocation command obtained according to the information received by the reallocation module located on the network-side node, so that the cognitive radio system resource can be under unified management, and mutual interference can be avoided, thereby ensuring fairness for each subsystem or operator to access the idle frequency spectrum of a main system.

Description

Method and system for resource reconfiguration of cognitive radio system

The present invention relates to the field of wireless communications, and in particular, to a method and system for resource reconfiguration of cognitive radio systems. Background technique

As the demand for wireless communication services, especially high-end services, continues to grow, more spectrum is planned for personal wireless communication services, and the real problem is the utilization of spectrum resources in the traditional fixed spectrum allocation mode. Not high, and with the diversification of system requirements, the coexistence of multiple radio access technologies (RATs) is the status quo.

From the current status and development trend of network operations, operators hope to be able to uniformly manage different systems coexisting in the short-term or geographical location to adapt to network traffic characteristics and resource utilization optimization; operators hope to be able to reside in specific areas. The cell traffic changes, dynamically managing the hardware resources and radio resources of existing systems and next-generation systems. Here, the new technology used is Cognitive Radio (CR) technology.

In general, the spectrum used by operational wireless communication technologies has been distributed to operators through various forms, such as auctions, and its usage rights and scope are fixed for a certain period of time, even if it is operated. The quotient has multiple systems, more precisely the spectrum allocated to these systems, and it is not possible to adjust the proportion of the spectrum occupied between systems to optimize the system performance. Therefore, the spectrum of cognitive radio systems for cognitive radio technology is applied. The coordinated management of resources is an urgent problem to be solved. Summary of the invention

In view of this, the main object of the present invention is to provide a resource reconfiguration for cognitive radio systems. The method and system can realize the overall management of spectrum resources.

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

A method for reconfiguring resource allocation of cognitive radio systems, the method comprising:

The reconfiguration module located at the network side node runs the reconfiguration algorithm according to the received spectrum adjustment indication or its own monitoring of the network status of each wireless communication system, and obtains a reconfiguration command;

The reconfiguration command is sent to the base station, and the reconfiguration command is executed by the base station to implement resource reconfiguration.

Further, the method further includes:

The policy control center generates a spectrum adjustment indication according to the overall planning and time schedule of the network of the operator, or after obtaining the available spectrum resources by interacting with the database information, where the spectrum adjustment indication includes a re-adjustment indication of the spectrum resource, and an increase of the RAT. , or enhancements to existing RAT features.

The reconfiguration module of the network side node is: a reconfiguration module common to different wireless communication systems, where the network side node is a network node on the core network side or a network node on the network management side.

The different wireless communication systems include: Global System for Mobile Communications (GSM), Universal Mobile Telecommunications System (UMTS), Long Term Evolution (LTE) System/Long Term Evolution Advanced (LTE-A) system.

The reconfiguration module running on the network side node runs a reconfiguration algorithm, and the reconfiguration command is:

The reconfiguration module located at the network management side or the core network side node obtains spectrum adjustment indication, spectrum usage information, and load status information by performing information interaction with the policy control center or by monitoring network conditions of each wireless communication system;

The reconfiguration module analyzes the acquired information, runs the reconfiguration algorithm, and derives the reconfiguration command.

The spectrum usage information is information about the usage of the licensed spectrum and the borrowed spectrum by the wireless communication system, and the spectrum usage of the primary system, including frequency, working bandwidth, One or more of the duration of the idle spectrum and the requirements of the transmission parameters;

The reconfiguration algorithm includes one or more of spectrum resource re-adjustment, existing RAT upgrade or layout new RAT, addition of multi-standard addition mode, radio resource optimization, and secondary system to main system spectrum borrowing.

The reconfiguration command is sent to the base station, and the reconfiguration command is executed by the base station to implement resource reconfiguration:

The reconfiguration module sends the reconfiguration command to a Radio Resource Manager (RRM);

The RRM controls the base station to perform reconfiguration according to the received reconfiguration command.

Further, after performing the reconfiguration command by the base station, the method further includes: after the reconfiguration is completed, the base station returns a reconfiguration complete message to the RRM;

The RRM forwards the received reconfiguration complete message to the reconfiguration module;

The reconfiguration module obtains network side performance information after the reconfiguration of the base station according to the reconfiguration command by monitoring the network status of each wireless communication system, and performs reconfiguration adjustment according to the obtained information.

A system for reconfiguring a resource of a cognitive radio system, comprising a base station, the system further comprising: a reconfiguration module located at a node on the network side;

The reconfiguration module is configured to: according to the received spectrum adjustment indication or the monitoring of the network status of each wireless communication system, run a reconfiguration algorithm to obtain a reconfiguration command; and send the reconfiguration command to the base station, through the base station The reconfiguration command is executed to implement resource reconfiguration.

Further, the system further includes: a database, a policy control center; wherein the database is configured to provide information about the spectrum status of the primary system and the usage information of the reconfiguration module to the idle spectrum of the primary system;

The policy control center is configured to generate a spectrum adjustment indication according to the overall planning and time schedule of the network of the operator, or after obtaining the available spectrum resources by interacting with the database information, where the spectrum adjustment indication includes the spectrum resource Re-adjustment indication, addition of radio access technology RAT, or enhancement of existing RAT functionality. The reconfiguration module at the network side node is a reconfiguration module common to different wireless communication systems; the network side node is a network node on the core network side or a network node on the network management side.

The reconfiguration module is located at the network management side or the core network side node, and is specifically configured to perform information interaction with the policy control center to obtain a spectrum adjustment indication, or obtain spectrum usage by monitoring network status of each wireless communication system. Situation information, load status information; and according to the obtained information, running a reconfiguration algorithm to obtain a reconfiguration command;

The spectrum usage information is information about the usage of the licensed spectrum and the borrowed spectrum by the wireless communication system, and the spectrum usage of the primary system, including the frequency, the working bandwidth, the duration of the idle spectrum, and the requirements of the transmission parameters. Species or more;

Preferably, the system further comprises: an RRM; wherein

The reconfiguration module is further configured to send the reconfiguration command to the RRM;

The RRM is configured to control, according to the received reconfiguration command, the base station to perform reconfiguration.

The base station is a reconfigurable base station RBS, and is configured to: after the reconfiguration is completed, return a reconfiguration complete message to the RRM;

The RRM is further configured to forward the received reconfiguration complete message to the reconfiguration module; the reconfiguration module is further configured to: perform, by monitoring the network status of each wireless communication system, acquire the base station to perform heavy according to the reconfiguration command. The network side performance information is matched, and the reconfiguration adjustment is performed according to the obtained information.

The present invention runs the reconfiguration according to the received information through the reconfiguration module located at the network side node. The algorithm obtains the reconfiguration command and realizes the coordinated allocation of spectrum resources. In this way, the resources of the cognitive radio system can be managed in an integrated manner, avoiding mutual interference, and ensuring that each secondary system or operator accesses the idle spectrum of the primary system. Fairness. DRAWINGS

1 is a schematic flow chart of a method for resource reconfiguration of a cognitive radio system according to the present invention; FIG. 1 is a structural diagram of a system for reconfiguring a cognitive radio system resource according to the present invention;

3 is a structural diagram of an LTE system for implementing a method for reconfiguring a cognitive radio system resource according to the present invention; FIG. 4 is a structural diagram of a GSM/UMTS system for implementing a method for resource reconfiguration of a cognitive radio system of the present invention;

5 is another structural diagram of a GSM/UMTS system for implementing a method for resource reconfiguration of cognitive radio systems of the present invention;

6 is a structural diagram of an LTE system for implementing the reconfiguration of a spectrum resource of a primary system according to the present invention; FIG. 7 is a structural diagram of a GSM/UMTS system for implementing a spectrum resource reconfiguration of a primary system by using the present invention;

FIG. 8 is another structural diagram of a GSM/UMTS system for implementing the reusing of the spectrum resource of the primary system according to the present invention; FIG.

9 is a structural diagram of a hybrid network of an LTE system and a GSM/UMTS system for implementing the reconfiguration of the spectrum resource of the primary system by the present invention;

FIG. 10 is another structural diagram of a hybrid network of an LTE system and a GSM/UMTS system for implementing the reconfiguration of the spectrum resource of the primary system by the present invention. detailed description

The basic idea of the present invention is: the reconfiguration module located at the network side node runs the reconfiguration algorithm according to the received spectrum adjustment indication or its own monitoring of the network status of each wireless communication system, and obtains a reconfiguration command; Sending a command to the base station, and executing the reconfiguration command by the base station Now the resources are reconfigured.

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

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

Step 101: The reconfiguration module located at the network side node runs a reconfiguration algorithm according to the received spectrum adjustment indication or its own monitoring of the network status of each wireless communication system, and obtains a reconfiguration command; specifically, a common wireless communication system The reconfiguration module may be located at a network node on the core network side or a network node on the network management side, where the wireless communication system includes at least: Global System of Mobile communication (GSM), Universal Mobile Communication System (Universal Mobile Communication System) Telecommunications System (UMTS), Long Term Evolution (LTE) system/Long Term Evolution-Advanced (LTE-A) system, etc.

The reconfiguration module obtains spectrum adjustment indication, spectrum usage information, and load status information by performing information interaction with the policy control center, or by monitoring network conditions of each wireless communication system; the reconfiguration module analyzes the acquired information, and runs pre-stored information. The reconfiguration algorithm obtains a reconfiguration command; where the spectrum usage information is information about the usage of the licensed spectrum and the borrowed spectrum by the respective wireless communication systems, and the spectrum usage of the primary system; specifically: frequency, working bandwidth, idle One or more of the duration of the spectrum and the requirements of the transmission parameters; wherein the main system may be a broadcast television system or the like;

The pre-stored reconfiguration algorithms include: spectrum resource re-adjustment, existing RAT upgrade or layout new RAT, addition of multi-standard addition mode, radio resource optimization, and one or more of secondary system spectrum borrowing from the main system.

It should be understood that, before the step, the method may further include: the policy control center obtaining the available information according to the overall planning and time schedule of the operator's network, or by interacting with the database information. After the spectrum resource, the spectrum adjustment indication is generated, where the spectrum adjustment indication includes a re-adjustment indication of the spectrum resource, an increase of the RAT, or an enhancement of the existing RAT function; specifically, a certain spectrum of the RATI is replaced by the RAT2, in the GSM. LTE systems are deployed, UMTS is upgraded to High Speed Packet Access (HSPA) technology, and so on.

Step 102: Send the reconfiguration command to the base station, and execute the reconfiguration command by the base station to implement resource reconfiguration.

Specifically, the reconfiguration module may send the reconfiguration command to a Radio Resource Manager (RRM), and after receiving the reconfiguration command, the RRM controls the base station to perform reconfiguration; where the base station is Reconfigure hardware resources and radio resources, and support multiple standard modes of reconfigurable base stations (RBS);

In addition, after the step, the method further includes: after the reconfiguration is completed, the base station returns a reconfiguration complete message to the RRM; the RRM forwards the received reconfiguration complete message to the reconfiguration module; The reconfiguration module can also obtain network side performance information (such as interference situation information, etc.) after the base station performs reconfiguration according to the reconfiguration command by detecting the status of each wireless communication network, and perform necessary information according to the acquired information. The reconfiguration adjustment, that is, the re-allocation algorithm results in a reconfiguration command and subsequent processing as described in step 102.

2 shows a structure of a system for reconfiguring a cognitive radio system resource according to the present invention. The system includes: a base station, a reconfiguration module located at a network side node; wherein, the base station is an RBS, and FIG. 2 is performed by RBS1 and RBS2. Indicated;

Further, the system further includes: a database, a policy control center; wherein the database may be provided by a main system operator or a third party, and includes spectrum status information and coverage of the main system in a local or a plurality of local regions. Scope or planned by the operator The usage information of the reconfiguration module on the idle spectrum of the primary system, and the load information, communication quality status information, and usage statistical law information in the coverage of each reconfiguration module; and spectrum etiquette information, such as interference avoidance strategy, spectrum lease rule, etc. The main system spectrum status information includes: the spectrum status being used, including frequency, bandwidth, possible duration, coverage, isolation band, etc.; unused spectrum status, including frequency, bandwidth, coverage, Possible duration, allowable maximum transmit power, etc.; spectrum information that is not allowed, may be the management domain restricted spectrum or the operator reserved spectrum, etc., including: frequency, bandwidth, and other information. The usage information of the reconfiguration module for the idle spectrum of the primary system includes: the idle spectrum used by itself, and the location of the reconfiguration module. The database is responsible for providing each secondary system with available primary system idle spectrum resources.

The policy control center is configured to generate a spectrum adjustment indication according to the overall planning and time schedule of the network of the operator, or after obtaining the available spectrum resources by interacting with the database information, where the spectrum adjustment indication includes the spectrum resource The re-adjustment indication, the addition of the RAT, or the enhancement of the existing RAT function; where the policy control center may be located on the network management side network element, such as the network element or the network management system on the element management system (EMS) side The network element on the network management system (NMS) is a function module related to the layout addition or upgrade side of the new RAT, and needs to borrow the idle spectrum resources of the primary system. In actual applications, it can be operated by the network operator. It is also used to obtain information about the spectrum usage of the main system in the database.

Further, the reconfiguration module is located at a node on the network management side or the core network side, and is specifically configured to perform information interaction with the policy control center, or monitor network conditions of each wireless communication system, and obtain spectrum adjustment indication and spectrum usage. The situation information; and running the reconfiguration algorithm according to the obtained information, and obtaining a reconfiguration command; specifically, the reconfiguration module is responsible for receiving and analyzing the spectrum adjustment indication sent by the policy control center, receiving other delegation triggering processes on the network side, and running the new Function and new RAT activated self-optimization process and reconfiguration algorithm; also used to monitor the cell activity status of the supported RAT after running the reconfiguration algorithm, determine the RBS to be reconfigured by executing the reconfiguration algorithm, and send the appropriate reconfiguration finger To control the reconfiguration; the results of network reconfiguration and RBS resource reconfiguration can also be evaluated by means of the results of the mobile device (MD).

Here, the reconfiguration command may include information such as function enhancement information for an existing RAT, software version information, spectrum information of a new RAT, a new function or an effective time of a new RAT, and an enhanced range of new functions.

The spectrum usage information is information about the usage of the licensed spectrum and the borrowed spectrum by the wireless communication system, and the spectrum usage of the primary system; specifically, the frequency, the working bandwidth, the duration of the idle spectrum, and the transmission parameter requirements. One or more

The reconfiguration algorithm includes: spectrum resource re-adjustment, existing RAT upgrade or layout new RAT, addition of multi-standard addition mode, radio resource optimization, and one or more of secondary system spectrum borrowing from the main system.

Here, the system further includes: an RRM; wherein, in the GSM/UMTS system, the RRM may be located in a Base Station Controller (BSC)/Radio Network Controller (RNC), Can be located in the RBS; in the LTE system, the RRM can be located in the RBS;

The RRM is configured to: after receiving the reconfiguration command, control the base station to perform reconfiguration; where, the RRM is further configured to receive a channel request of the RBS, perform RBS channel allocation evaluation, and manage a request and allocation of the radio channel of the MD; Software version download upgrade; monitor the load status of the cell; indicate the redistribution of the RBS, and evaluate the impact after redistribution, such as interference tolerance, and indicate the resource allocation to the reconfiguration module.

Here, the base station (RBS1 or RBS2) is configured to: after the reconfiguration is completed, reply a reconfiguration complete message to the RRM; specifically, the RBS may support inter-RAT conversion, such as GSM-UMTS, UMTS-LTE, etc.; It is also used to manage the utilization of radio resources (RRs) activated in each supported RAT, and dynamically manage the existing systems and the next generation systems. Resource allocation; allocation of RR that is assigned to one or more modes of time division duplex (TDD) and frequency division duplex (FDD) activation; dynamic capacity optimization, such as power saving, load balancing, etc.; downloading from the network side for new Functional upgrades, such as UMTS-HSPA+; provide wireless resource management and services to user terminals, and more.

FIG. 3 shows an LTE system structure for implementing the method for reconfiguring the cognitive radio system resources of the present invention. As shown in FIG. 3, the RRM is located in the RBS, and the reconfiguration module is located in the network management side/core network side network element; The process of implementing the above method in the LTE system is described in detail.

Step 1: The reconfiguration module collects the information reported by the network side and receives the spectrum adjustment indication sent by the policy control center.

Specifically, when the information reported by the network indicates that the load of the current cell is serious, the reconfiguration module needs to determine whether the reconfiguration algorithm needs to be run according to the load condition of the cell around the cell, the spectrum utilization situation, etc.; The planned time schedule adjusts a certain frequency band currently used by LTE to the spectrum of a higher-level system, and then sends a spectrum adjustment indication to the reconfiguration module.

Here, the spectrum adjustment indication includes a reconfiguration adjustment indication of the frequency resource, a certain spectrum used by the LTE system, an effective time (such as a time period in which the spectrum can be used), an area range, and the like.

Step 2: The reconfiguration module analyzes the obtained information, runs a reconfiguration algorithm, and sends a reconfiguration command to the RRM in the RBS.

The reconfiguration command includes: spectrum information to be reformed, effective time, area range, interference tolerance to adjacent frequency bands, handover command, and the like.

Step 3: After the RRM in the RBS receives the reconfiguration command from the reconfiguration module, the resource is evaluated. After reassigning the impact on the network side, execute the reconfiguration command.

Step 4: After receiving the reconfiguration command, the RBS performs resource reconfiguration in the effective time period according to the RRM indication.

Step 5: After the RBS completes resource reconfiguration, the RRM in the RBS returns a reconfiguration complete message to the reconfiguration module.

FIG. 4 shows a GSM/UMTS system structure for implementing the method for reconfiguring the cognitive radio system resources of the present invention. As shown in FIG. 4, the RRM is located in the RBS, and the reconfiguration module is located at the network management side/core network side network element; Figure 4 details the internal resource optimization of the GSM/UMTS system and the process of GSM reconfiguration to UMTS.

Specifically, when the information reported by the network side indicates that the cell load of the current GSM/UMTS system is severe, the reconfiguration module needs to determine whether the reconfiguration algorithm needs to be run according to the load status and spectrum utilization of the surrounding cells; According to the time schedule of the network planning, a certain frequency band used by the current GSM is adjusted to the spectrum of the UMTS, and the spectrum adjustment indication is sent to the reconfiguration module.

Here, the spectrum adjustment indication includes: a reconfiguration adjustment indication of the frequency resource, a certain spectrum used by the GSM, an effective time (such as a time period in which the spectrum can be used), a range of the area, and the like.

Step 2: The reconfiguration module analyzes the received information, runs the reconfiguration algorithm, and sends a reconfiguration command to the BSC/RNC, and transparently transmits it to the RRM in the RBS by the BSC/RNC;

Step 3: After receiving the reconfiguration command from the reconfiguration module, the RRM evaluates the impact on the network side after the resource is reassigned, and executes the reconfiguration command. Step 4: After receiving the reconfiguration command, the RBS performs resource reconfiguration in the effective time period according to the RRM indication.

Step 5: After the RBS completes the resource reconfiguration, the RRM in the RBS returns a reconfiguration complete message to the BSC/RNC, and the BSC/RNC transparently transmits the reconfiguration module to confirm the completion of the reconfiguration.

After the reconfiguration is completed, the original GSM BSC is used as the UMTS RNC.

Further, the procedure is also applicable to the reverse process, that is, the UMTS is reassigned to GSM due to network planning; at this time, after the reconfiguration is completed, the original UMTS RNC is used as the GSM BSC.

FIG. 5 shows another structure of a GSM/UMTS system for implementing the method for reconfiguring the cognitive radio system resources of the present invention. As shown in FIG. 5, the RRM is located in the BSC/RNC, and the reconfiguration module is located on the network management side/core network side network. The following is a detailed description of the internal resource optimization of the GSM/UMTS system and the process of GSM reconfiguration to UMTS in conjunction with FIG. 5.

Specifically, when the information reported by the network side indicates that the cell load of the current GSM/UMTS system is severe, the reconfiguration module needs to determine whether the reconfiguration algorithm needs to be run according to the load status and spectrum utilization of the surrounding cells; According to the time schedule of the network planning, a certain frequency band used by the current GSM is adjusted to the spectrum of the UMTS, and a spectrum adjustment indication is sent to the reconfiguration module.

Step 2: The reconfiguration module analyzes the received information, runs a reconfiguration algorithm, and sends a reconfiguration command to the RRM in the BSC/RNC;

Step 3: After receiving the reconfiguration command from the reconfiguration module, the RRM evaluates the impact on the network side after the resource is reassigned, and controls the RBS to execute the reconfiguration command. Step 4: After receiving the reconfiguration command, the RBS performs resource reconfiguration in the effective time period according to the RRM indication.

Step 5: After completing the resource reconfiguration, the RBS returns a reconfiguration complete message to the RRM in the BSC/RNC, and the RRM forwards to the reconfiguration module to confirm the completion of the reconfiguration.

FIG. 6 shows an LTE system structure for implementing the spectrum resource reconfiguration of the primary system (such as a broadcast television system) of the present invention. As shown in FIG. 6, the RRM is located in the RBS, and the reconfiguration module is located on the network management side/core network side network element; The process of borrowing the broadcast television system white space resources (TVWS) from the LTE system will be described in detail below with reference to FIG.

Specifically, when the information reported by the network side indicates that the current cell load is severe, the reconfiguration module needs to determine whether the TVWS spectrum resource can be borrowed according to the TVWS usage information acquired in the policy control center; wherein, the policy control center passes the database Information exchange acquires usage information of spectrum resources of the primary system;

Here, the TVWS usage information includes: an unused spectrum state; specifically, a frequency point, a working bandwidth, a coverage range, a possible duration, an allowable maximum transmission power, and the like.

Step 2: The reconfiguration module analyzes the received information, runs a reconfiguration algorithm, and sends a reconfiguration command to the RRM in the RBS;

The reconfiguration commands include: TVWS frequency, working bandwidth, coverage, possible duration, maximum allowed transmit power, and the like.

Step 3: After receiving the reconfiguration command from the reconfiguration module, the RRM performs a reconfiguration command to switch the services on the part of the LTE licensed spectrum to the TVWS. Step 4: After receiving the reconfiguration command, the RBS performs reconfiguration according to the RRM indication during the specified time period.

Step 5: After the RBS completes the resource reconfiguration, the RRM in the RBS returns a reconfiguration complete message to the reconfiguration module to confirm that the reconfiguration is complete, and the reconfiguration module feeds back the reconfiguration result to the policy control center.

FIG. 7 shows a GSM/UMTS system structure for implementing spectrum resource reconfiguration of a host system (such as a broadcast television system) according to the present invention. As shown in FIG. 7, the RRM is located in the RBS, and the reconfiguration module is located on the network management side/core network side network. The specific process of borrowing TVWS in the GSM/UMTS system shown in FIG. 7 is similar to the process of borrowing TVWS in the LTE system shown in FIG. 6, except that there is an independent BSC/RNC on the network side of the GSM/UMTS system, therefore, The BSC/RNC is mainly used to transparently transmit messages between the reconfiguration module and the RBS/RRM in the process of borrowing the TVWS.

FIG. 8 shows another structure of the GSM/UMTS system for implementing the re-allocation of the spectrum resource of the primary system according to the present invention. As shown in FIG. 8, the RRM is located in the BSC/RNC, and the reconfiguration module is located on the network element side/core network side network element; The process of borrowing TVWS from the GSM/UMTS system will be described in detail below with reference to FIG. 8. It should be understood that the process is different from the process of borrowing TVWS by the GSM/UMTS system shown in FIG. 7 because the RRM shown in FIG. 8 is located in the BSC/RNC. At this point, BSC/RNC is not just a function of transparent messaging.

Step 1: The reconfiguration module collects the information reported by the network side and receives the spectrum adjustment indication information sent by the policy control center.

Specifically, when the information reported by the network side indicates that the load of the current cell is serious, the reconfiguration module needs to determine whether the TVWS can be borrowed according to the TVWS usage information acquired in the policy control center; wherein the policy control center interacts with the database information. Obtaining usage information of the spectrum resources of the primary system;

Step 2: The reconfiguration module analyzes the received information, runs the reconfiguration algorithm, and goes to the BSC/RNC. RRM sends a reconfiguration command;

Step 3: After receiving the reconfiguration command from the reconfiguration module, the RRM controls the RBS to execute a reconfiguration command to switch the services on the licensed spectrum of the GSM/UMTS system to the TVWS.

Step 4: After receiving the reconfiguration command, the RBS performs reconfiguration according to the RRM indication during the specified time period.

Step 5: After completing the resource reconfiguration, the RBS returns a reconfiguration complete message to the RRM in the BSC/RNC, and the RRM forwards the reconfiguration complete message to the reconfiguration module to confirm that the reconfiguration is complete, and the reconfiguration module feeds back the reconfiguration result to the policy. control center.

9 shows the structure of a hybrid network of an LTE system and a GSM/UMTS system for implementing the method for resource reconfiguration of the cognitive radio system of the present invention. As shown in FIG. 9, the RBS includes an RBS of an LTE system and a GSM/UMTS system; The RRM is located in the RBS. For the GSM/UMTS system, the RRM is located in the BSC/RNC. The reconfiguration module is located in the network element side/core network side network element. The following is the hybrid network implementation of the LTE system and the GSM/UMTS system. The process of resource reconfiguration of the present invention is described in detail.

Step 1: The RRM of the respective system monitors the running status of the respective networks, and when the current business is monitored and the load is heavy, the reconfiguration module is reported;

Step 2: The reconfiguration module runs the reconfiguration algorithm according to the obtained system information, and obtains a reconfiguration command;

Here, the information acquired by the reconfiguration module includes: spectrum usage information from each RBS, load status information, reconfiguration request information, and spectrum adjustment indications from the policy control center, idle spectrum resource information, and the like.

Step 3: The reconfiguration module sends the reconfiguration command to the subordinate network element.

In this embodiment, all reconfiguration commands related to reconfiguration of the LTE system are sent to the corresponding The RBS of the LTE controls the LTE system network element to perform resource reconfiguration by the RRM in the RBS, and the BSC/RNC only plays a transparent role for these messages; all reconfiguration commands related to the reconfiguration of the GSM/UMTS system will be sent. The RRM in the corresponding BSC/RNC is controlled by the GSM/UMTS system network element for reconfiguration.

Further, if the GSM/UMTS system is reconfigured as an LTE system, the reconfiguration is controlled by the RRM in the BSC/RNC, and after the reconfiguration is performed, the RRM in the RBS of the LTE system functions, and is heavy on the GSM/UMTS system. The BSC/RNC corresponding to the RBS of the LTE system transmits only relevant system messages to the RBS. If the LTE system is reconfigured as a GSM/UMTS system, after the reconfiguration is completed, the corresponding RBS is controlled by the RRM in the BSC/RNC, and the RRM in the RBS (LTE) no longer functions.

10 shows the structure of a hybrid network of an LTE system and a GSM/UMTS system for implementing the method for resource reconfiguration of the cognitive radio system of the present invention. As shown in FIG. 10, the RBS includes an LTE system and an RBS of a GSM/UMTS system; / GSM/UMTS system, RRM is located in the RBS; the reconfiguration module is located in the network management side/core network side network element; the following is a process of implementing the resource reconfiguration of the LTE system and the GSM/UMTS system hybrid network in conjunction with FIG. Detailed description.

In this embodiment, all reconfiguration decisions are sent to the RRMs in the respective RBSs, and the network elements of the control system are used for resource reconfiguration. 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, wherein the method comprises: a reconfiguration module located at a network side node, according to the received spectrum adjustment indication or its own monitoring of network conditions of each wireless communication system, With the algorithm, the reconfiguration command is obtained;

2. The method according to claim 1, wherein the method further comprises:

The policy control center generates a spectrum adjustment indication according to the overall planning and time schedule of the operator, or after obtaining the available spectrum resources by interacting with the database information, where the spectrum adjustment indication includes a re-adjustment indication of the spectrum resource, and the radio access An increase in the technology RAT, or an enhancement of existing RAT functions.

3. The method according to claim 1, wherein the reconfiguration module located at the network side node is:

A reconfiguration module common to different wireless communication systems, where the network side node is a network node on the core network side or a network node on the network management side.

4. The method according to claim 3, wherein the different wireless communication systems comprise: a global mobile communication system GSM, a universal mobile communication system UMTS, a long term evolution LTE system / a long term evolution advanced LTE-A system.

5. The method according to claim 1, wherein the reconfiguration module located at the network side node runs a reconfiguration algorithm, and the reconfiguration command is:

6. The method according to claim 5, wherein the spectrum usage information is no Information about the use of the licensed spectrum and the borrowed spectrum by the line communication system and the spectrum usage of the primary system, including one or more of the frequency point, the working bandwidth, the duration of the idle spectrum, and the requirements of the transmission parameters;

The method according to claim 1, wherein the transmitting the reconfiguration command to the base station, and performing the reconfiguration command by the base station to implement resource reconfiguration is:

The reconfiguration module sends the reconfiguration command to the radio resource manager RRM;

The method according to claim 7, wherein after the performing the reconfiguration command by the base station, the method further includes:

After the reconfiguration is completed, the base station returns a reconfiguration complete message to the RRM;

A system for reconfiguring a cognitive radio system resource, comprising a base station, wherein the system further comprises: a reconfiguration module located at a node on the network side;

The system of claim 9, wherein the system further comprises: a database, a policy control center;

The database is configured to provide information about the spectrum status of the primary system and the usage information of the reconfiguration module to the idle spectrum of the primary system; The policy control center is configured to generate a spectrum adjustment indication according to the overall planning and time schedule of the network of the operator, or after obtaining the available spectrum resources by interacting with the database information, where the spectrum adjustment indication includes the spectrum resource Re-adjustment indication, addition of radio access technology RAT, or enhancement of existing RAT functionality.

The system according to claim 9, wherein the reconfiguration module located at the network side node is a reconfiguration module common to different wireless communication systems; the network side node is a network node on the core network side or a network management side. Network node.

The system according to claim 11, wherein the different wireless communication systems comprise: a global mobile communication system GSM, a universal mobile communication system UMTS, a long term evolution LTE system / a long term evolution advanced LTE-A system.

The system according to claim 10, wherein the reconfiguration module is located at a network management side or a core network side node, and is configured to perform information interaction with the policy control center, obtain a spectrum adjustment indication, or pass each wireless Monitoring the network status of the communication system, obtaining spectrum usage information and load status information; and running the reconfiguration algorithm according to the obtained information to obtain a reconfiguration command;

14. The system according to claim 9, wherein the system further comprises: an RRM;

The system according to claim 14, wherein the base station is a reconfigurable base station An RBS, configured to: after the reconfiguration is completed, return a reconfiguration complete message to the RRM; the RRM is further configured to forward the received reconfiguration complete message to the reconfiguration module; After monitoring the network status of each wireless communication system, the network side performance information after the base station performs reconfiguration according to the reconfiguration command is obtained, and the reconfiguration adjustment is performed according to the obtained information.