| 摘要 |
<p>A distributed load balancing method for use in a cell of a cellular wireless network is disclosed, in which a first parameter of each cell participating in the method is indicative of the operational performance of the cell and has an optimum value and in which a second parameter of each cell participating in the method is indicative of the degree of acceptance by the cell of user transfers to the cell relative to the degree of requests by the cell to transfer users from the cell and has an optimum value, comprises a first cell carrying out the steps of: determining, in response to the first cell receiving a request to provide service for specified users in a second cell of the cellular wireless network which neighbours the first cell, whether to provide service for the specified users of the second cell by evaluating whether, on the basis of its current load, a value of the first parameter will be adversely affected if the request of the second cell is accepted and users are transferred from the second cell to the first cell; accepting or declining the request of the second cell in accordance with the result of the determining step; updating the value of the second parameter to reflect the result of the determining step; and advising cells neighbouring the first cell and a control means of the network, common to a plurality of cells in the network including the first cell, of the updated value of the second parameter. Another distributed load balancing method is also disclosed in which a further secondary request is issued by each of n further cells in the network, a further secondary request issued by the nth cell being a request for another cell to provide service for specified users of the nth cell, where 1 =n=N, N is a preset maximum number of cells which are permitted to issue such a further secondary request, and the nth cell is neighboured by the (n-1)th cell, except where n is 1 where it is neighboured by the first cell, a further secondary request being issued by the nth cell when the operational performance of the nth cell will be adversely affected by accepting a further secondary request from the (n-1)th cell, except when n is 1 in which case a further secondary request is issued by the nth cell when the operational performance of the nth cell will be adversely affected by accepting the secondary request of the first cell, and if the further secondary request of the nth cell is accepted, the received request of the (n-1)th cell is accepted and the specified users are transferred from the (n-1)th cell and the nth cell, except where n is 1 in which case the received request of the first cell is accepted and the specified users are transferred from the first cell and the nth cell.</p> |
