Radio resource management system and radio resource management method

Abstract

The present disclosure provides a radio resource management system and method. The radio resource management system includes a control device for determining, based on geographical location information of at least one secondary system and at least one primary system managed by the radio resource management system, a radio resource available to the at least one secondary system among licensed radio resources of the at least one primary system when the primary system is not interfered with, the control device including a selection unit for selecting at least one object liable to be interfered with by the secondary system managed by another radio resource management system from the at least one primary system, from the at least one secondary system, or from the at least one primary system and the at least one secondary system based on the geographical location information; and a communication device for transmitting the geographical location information of the at least one object selected by the selection unit to the another radio resource management system. The present disclosure can reduce an information interaction between radio resource management systems.

1 . A radio resource management system, comprising:
 a control device, configured to determine, based on geographical location information of at least one secondary system and at least one primary system managed by the radio resource management system, a radio resource that is available to the at least one secondary system among licensed radio resources of the at least one primary system in the case that the primary system is not interfered with, the control device including:
 a selection unit, configured to select at least one object that is liable to be interfered with by the secondary system managed by another radio resource management system from the at least one primary system, from the at least one secondary system, or from the at least one primary system and the at least one secondary system based on the geographical location information; and 
   a communication device, configured to transmit the geographical location information of the at least one object selected by the selection unit to the another radio resource management system.   
     
     
         2 . The radio resource management system according to  claim 1 , further comprising:
 a storage device, configured to store the geographical location information of the at least one secondary system and the at least one primary system, wherein the control device is further configured to access the storage device, so as to obtain the geographical location information of the at least one secondary system and the at least one primary system.   
     
     
         3 . The radio resource management system according to  claim 1 , wherein the selection unit is configured to determine, based on the geographical location information, a distance between the at least one primary system, the at least one secondary system, or the at least one primary system and the at least one secondary system and a communication system region managed by the another radio resource management system, and select at least one object as the at least one object that is liable to be interfered with by the secondary system managed by the another radio resource management system according to the distance. 
     
     
         4 . The radio resource management system according to  claim 1 , wherein,
 the selection unit is further configured to select, based on reception performance information of the at least one primary system and secondary system, at least one object as the at least one object that is liable to be interfered with by the secondary system managed by the another radio resource management system, the reception performance information including reception power,   the communication device is further configured to transmit the reception performance information of the selected at least one object to the another radio resource management system.   
     
     
         5 . The radio resource management system according to  claim 3 , wherein, the selection unit is further configured to select the at least one object based on priority information of the at least one secondary system,
 the communication device is further configured to transmit the priority information of the selected at least one object to the another radio resource management system.   
     
     
         6 . The radio resource management system according to  claim 1 , wherein, the communication device is further configured to receive information of the secondary system that is managed by the another radio resource management system and is liable to generate interference on the at least one object from the another radio resource management system. 
     
     
         7 . The radio resource management system according to  claim 6 , further comprising:
 an aggregation interference calculation device, configured to calculate, with respect to each object selected by the selection unit, an aggregation interference on the object generated by a communication system including the secondary system managed by the another radio resource management system according to the information of the secondary system managed by the another radio resource management system received by the communication unit.   
     
     
         8 . The radio resource management system according to  claim 7 , wherein the control device further includes:
 an adjustment unit, configured to determine an adjustment to an operational parameter of the secondary system managed by the another radio resource management system according to the aggregation interference calculated by the aggregation interference calculation device with respect to each object and an interference power threshold of the object, and generate adjustment information, the operational parameter including at least one of maximum transmission power and a working channel,   wherein the communication device further informs the another radio resource management system of the adjustment information.   
     
     
         9 . The radio resource management system according to  claim 1 , wherein, the primary system is a terrestrial television broadcast system, and the secondary system is a cognitive radio communication system. 
     
     
         10 . A radio resource management system, comprising:
 a control device, configured to determine, based on geographical location information of at least one secondary system and at least one primary system managed by the radio resource management system, a radio resource that is available to the at least one secondary system among licensed radio resources of the at least one primary system in the case that the primary system is not interfered with, the control device including:
 an aggregation unit, configured to equate at least two secondary systems that are geographically closed to each other among the secondary systems managed by the radio resource management system to one equivalent secondary system; and 
   a communication device, configured to transmit radio resource usage information and the geographical location information of the equivalent secondary system to another radio resource management system, so as to assist an interference coordination with the another radio resource management system.   
     
     
         11 . The radio resource management system according to  claim 10 , wherein the radio resource usage information of the equivalent secondary system includes transmission power of the equivalent secondary system. 
     
     
         12 . The radio resource management system according to  claim 10 , wherein the communication device is further configured to receive information of at least one object to be protected among objects managed by the another radio resource management system from the another radio resource management system, wherein the information of the at least one object includes the geographical location information of the at least one object and reception power of the at least one object. 
     
     
         13 . The radio resource management system according to  claim 12 , wherein the control device further includes:
 a calculation unit, configured to determine, with respect to the at least one object, an interference power threshold of the at least one object according to the reception power of the object received by the communication device and a signal-to-interference and noise ratio requirement; and   an interference region determination unit, configured to determine, with respect to each of the at least one object, an interference region of the respective secondary systems with respect to the object according to a location of the respective secondary systems among the secondary systems managed by the radio resource management system and the interference power threshold of the object.   
     
     
         14 . The radio resource management system according to  claim 13 , wherein the aggregation unit equates, with respect to each of the at least one object, at least two secondary systems of which coverage ranges of the interference regions are overlapped among the respective secondary systems to one equivalent secondary system according to the interference region of the respective secondary systems with respect to the object. 
     
     
         15 . The radio resource management system according to  claim 14 , wherein the interference region determination unit is further configured to equate an location of a secondary system which is closest to a communication system region managed by the another radio resource management system among at least two secondary systems having been equated to one equivalent secondary system to a location of the equivalent secondary system, and add the transmission power of the at least two secondary systems together to equate to the transmission power of the equivalent secondary system, so as to determine the interference region of the equivalent secondary system. 
     
     
         16 . The radio resource management system according to  claim 13 , wherein the control device further includes:
 a judgment unit, configured to judge whether the interference region of the respective secondary systems including all the equivalent secondary systems covers the at least one object or not.   
     
     
         17 . The radio resource management system according to  claim 16 , wherein the judgment unit is configured to judge whether an object which is closest to the communication system region managed by the radio resource management system among communication systems managed by the another radio resource management system is within the interference regions of the respective secondary systems including the equivalent secondary system or not. 
     
     
         18 . The radio resource management system according to  claim 16 , wherein, the communication device is configured to, in the case that the judgment unit judges that the interference region covers the at least one object, transmit information of the equivalent secondary system corresponding to the interference region and/or other secondary system to the another radio resource management system. 
     
     
         19 . The radio resource management system according to  claim 10 , wherein, the primary system is a terrestrial television broadcast system, and the secondary system is a cognitive radio communication system. 
     
     
         20 . A radio resource management method, comprising:
 a control step, for determining, based on geographical location information of at least one secondary system and at least one primary system managed by a radio resource management system, a radio resource that is available to the at least one secondary system among licensed radio resources of the at least one primary system in the case that the primary system is not interfered with, the control step further including:
 selecting at least one object that is liable to be interfered with by the secondary system managed by another radio resource management system from the at least one primary system, from the at least one secondary system, or from the at least one primary system and the at least one secondary system based on the geographical location information; and 
   a transmission step, for transmitting the geographical location information of the selected at least one object to the another radio resource management system.   
     
     
         21 . A radio resource management method, comprising:
 a control step, for determining, based on geographical location information of at least one secondary system and at least one primary system managed by a radio resource management system, a radio resource that is available to the at least one secondary system among licensed radio resources of the at least one primary system in the case that the primary system is not interfered with, the control step including:
 equating at least two secondary systems that are geographically closed to each other among the secondary systems managed by the radio resource management system to one equivalent secondary system; and 
   a transmission step, for transmitting radio resource usage information and the geographical location information of the equivalent secondary system to another radio resource management system, so as to assist an interference coordination with the another radio resource management system.