Management method for radio resources in a radio telecommunication system

Abstract

The invention relates to a management method for radio resources in a radio telecommunication system, in which a first radio telecommunication system has a first decentralized functional unit for managing radio resources, and a second radio telecommunication system has a second decentralized functional unit for managing radio resources. The first and the second decentralized function unit signal information with respect to a work load of the radio resources to a central functional unit for common radio resource management. The central functional unit evaluates this information and signals information with respect to load targets to at least one of the decentralized functional units, said information being taken into consideration by the decentralized functional unit in an intersystem handover.

1 . A management method for radio resources in a radio communication system, wherein a first radio communications system features a first local functional unit for managing radio resources and a second radio communications system features a second local functional unit for managing radio resources, and the method comprises:
 with each of the first and second local functional units, signaling information relating to load measurements of the radio resources to a central functional unit for common radio resources management; and   evaluating the information with the central functional unit, determining a ranking of potential targets for controlling an Inter System handover, and making the ranking available to at least one of the local functional units.   
     
     
         2 . The method according to  claim 1 , wherein the first and second radio communication systems support the same access technologies. 
     
     
         3 . The method according to  claim 1 , wherein the first and second radio communication systems support different access technologies. 
     
     
         4 . The method according to  claim 1 , which comprises requesting information relating to the load measurements by the central functional unit. 
     
     
         5 . The method according to  claim 1 , which comprises defining the ranking by the central functional unit for specific radio cells, services and/or speeds. 
     
     
         6 . The method according to  claim 1 , wherein the local functional units are divided into functional subunits, and method further comprises:
 making a decision, with mobile functional subunits, about a time and/or a target of an Inter System handover and defining roles and/or parameters for Inter System handover with network-linked functional subunits communicating directly with the central functional unit on the basis of information received from the central functional unit;   signaling the roles and/or parameters to the mobile functional subunits with the network-linked functional subunits; and   taking into account the roles and/or parameters for the Inter System handover with the mobile functional subunits.   
     
     
         7 . The method according to  claim 6 , wherein the mobile functional subunits are implemented in mobile stations. 
     
     
         8 . A neighborhood of radio communication systems comprising a first radio communications system with a first local functional unit for managing radio resources, a second radio communications system with a second local functional unit for managing radio resources, and a central functional unit for common radio resources management, said local and central functional units being conFIGUREd for executing the method according to  claim 1 . 
     
     
         9 . The neighborhood of radio communication systems according to  claim 8 , wherein said central functional unit is implemented in a central network node. 
     
     
         10 . The neighborhood of radio communication systems according to  claim 8 , further comprising a plurality of central network nodes communicating with one another and conFIGUREd to implement said central functional unit. 
     
     
         11 . The neighborhood of radio communication systems according to  claim 8 , wherein said central functional unit is implemented in at least one network node having implemented therein a local functional unit. 
     
     
         12 . The neighborhood of radio communication systems according to  claim 8 , wherein at least parts of said local functional units are implemented in mobile stations, and said central functional unit is conFIGUREd to signal to the mobile stations information relating to loads of radio resources, load targets and/or rankings, and the mobile stations are conFIGUREd to be involved in a decision about a time and/or a target of an Inter System handover. 
     
     
         13 . A central functional unit for managing radio resources of a first local functional unit and a second local functional unit, the central functional unit comprising:
 a unit conFIGUREd to receive information relating to load measurements of radio resources from the first local functional unit and from the second local functional unit; and   said unit additionally being conFIGUREd to evaluate said load measurement information and to signal information relating to a ranking of potential targets to at least one of the first local functional unit and the second local functional unit.   
     
     
         14 . A local functional unit for managing radio resources in a radio communication system including a central network unit, the local functional unit comprising:
 a unit conFIGUREd to signal information relating to load measurements of the radio resources to the central network unit for radio resources management; and   said unit additionally being conFIGUREd to receive a ranking of potential targets from the central network unit, and to consider said received ranking of potential targets when making an Inter System handover.