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Cellular communications network and method for maintaining speech quality by controlling the admission of a new call
| Details |
Inventors: Ritzen, Benny; Cerwall, Patrik;
Assignee: Telefonaktiedolaget L M Ericsson (publ) (SE)
Primary Examiner: Trost; William
Assistant Examiner: Sobutka; Philip J.
Attorney, Agent or Firm: Jenkins & Gilchrist, A Professional Corporation
A method and cellular communication network are provided that maintains a desired level of speech quality by controlling the admission of a new call within a serving cell of the network. More specifically, the method includes the step of establishing speech quality values for a serving cell and at least one of a plurality of surrounding cells being interfered with by the serving cell. The method then operates to determine whether or not to admit the new call to the serving cell by utilizing the speech quality measure of the serving cell and the speech quality measure of the at least one surrounding cell in a predetermined manner (e.g., cell level approach, sub-cell approach and combined approach) so as to maintain the desired level of speech quality within the serving cell and the at least one surrounding cell. |
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DETAILED DESCRIPTION The present invention is a method and cellular communication network that maintains a desired level of speech quality by controlling the admission of a new call within a serving cell of the network.
More specifically, the method includes the step of establishing speech quality values for a serving cell and at least one of a plurality of surrounding cells being interfered with by the serving cell.
The method then operates to determine whether or not to admit the new call to the serving cell by utilizing the speech quality measure of the serving cell and the speech quality measure of the at least one surrounding cell in a predetermined manner (e.
g.
, cell level approach, sub-cell approach and combined approach) so as to maintain the desired level of speech quality within the serving cell and the at least one surrounding cell.
In accordance with the present invention, there is provided a method and cellular communications network that maintains a desired level of speech quality by controlling the admission of new calls and handovers of ongoing calls to a serving cell.
Also in accordance with the present invention, there is provided a method and cellular communications network capable of reducing the large safety margins and high costs commonly associated with the current cell planning techniques.
Also in accordance with the present invention, there is provided a method and cellular communications network that determines whether or not to admit a new call based on a cell level approach, sub-cell level approach or a combined approach.
Further in accordance with the present invention, there is provided a method and cellular communications network capable of operating in accordance with any telecommunications standard that supports mobile assisted handovers such as, for example, the Global System for Mobile Communications (GSM) standard.
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