Method and apparatus for performing local traffic measurement in cellular telephone network
A technology of cellular phone and business volume, applied in the direction of selection device, network planning, electrical components, etc., can solve the problem of wireless frequency unavailability, etc.
Inactive Publication Date: 2003-12-24
TELEFON AB LM ERICSSON (PUBL)
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- Application Information
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Problems solved by technology
Occasionally radio frequencies may be unavailable or may require reassignment of radio frequencies used by surrounding base stations
Method used
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[0018] Although the present invention has been described as implemented within the Global Standard for Mobile Communications (GSM), it is understood that the present invention can be implemented within any other cellular telephone system protocol.
[0019] now refer to figure 1 , a cellular telephone network 100 including a base station 140 providing cellular telephone service to mobile stations 130 operating within a macro cell 110 is illustrated. To increase the capacity of cellular telephones within the macrocell 110, microcells 120, referred to herein as "hot spots," are established. Within a cellular telephone system without grading capability, a cellular telephone call is handed off from the base station 140 serving the macro cell 110 to a base station (not shown) based on a comparison between the signal strengths from the macro cell 110 and the micro cell 120 , the base station will provide services to the proposed micro cell 120 . Handover generally occurs when the s...
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A method and apparatus for measuring telephone traffic volume in a cellular telephone system (100) is disclosed. In a first embodiment, a receiver (150) is located at the proposed micro-cell site (120) and measures the strength of signals transmitted by mobile stations (130) to determine the cellular telephone traffic in the proposed micro-cell site (120). In a second embodiment of the present invention, a test base station (500) is located at the proposed micro-cell site (120). A processor (510), communicating with the base station controller (300) serving the macro-cell (110) surrounding the proposed micro-cell site (120), extracts signal strength measurement reports transmitted to the cellular telephone network (100) from mobile stations (130) in and around the proposed micro-cell site (120). The processor (510) uses the signal strength measurements to calculate the cellular telephone traffic volume in the proposed micro-cell site (120). In a third embodiment of the present invention, a test base station (700) is located at the proposed micro-cell site (120) and is assigned a location area identity different from that of the macro-cells (110) surrounding the proposed micro-cell (120). Mobile stations (130) operating in and around the proposed micro-cell site (120) are required to register in the new location area and transmit a signal strength report which includes the signal strength of the test base station (700). A processor (710) connected to the test base station (700) uses the received signal strength reports to calculate cellular telephone traffic volume in the proposed micro-cell site (120).
Description
technical field [0001] The present invention relates generally to cell selection within a cellular telephone network, and more particularly to methods and apparatus for performing local traffic measurements within proposed locations of "hot spot" microcells. Background technique [0002] As the utilization of cellular telephone networks increases, additional capacity must be added to the network in order to provide increased cellular telephone service. One way to increase the capacity of a cellular telephone network is to add additional cells to the network. When adding a new cell to an existing cellular telephone network, two methods are available. In both a hierarchical and non-hierarchical-capable cellular telephone system, the subdivision of an existing cell into two or more geographically smaller microcells, where each microcell or multiple A zone allocates a set of independent radio frequencies for wireless communication with mobile stations. The mobile station is t...
Claims
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IPC IPC(8): H04W16/18
CPCH04W16/18
Inventor A·约翰松
Owner TELEFON AB LM ERICSSON (PUBL)