Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
1997-06-11
2001-02-27
Eisenzopf, Reinhard J. (Department: 2682)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S443000
Reexamination Certificate
active
06195566
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to the connection of number local base stations distributed inside a cell with the result being an integrated base station facility.
BACKGROUND OF THE INVENTION
Recently there has been a dramatic increase in portable telephones. In addition there is a similar but scaled down portable telephone called the Personal Handy phone System (PHS). The portable telephone service area as well as the PHS system service area are somewhat limited to places like major roads, train stations, business areas, down town areas, department stores and residential areas.
Portable telephone systems (including PHS, hereafter they will be treated as the same) have a limited number of usable frequencies, since there are not an unlimited number of channels to assign to all the locations (such as roads, train station, business areas). Therefore, the cells that are controlled by base stations in areas where there is expected to be a relatively high volume of traffic are smaller, this design allows for comparatively efficient use of the various frequencies. However, in any given cell the amount the base station is utilized is obviously not fixed. For example, in business areas portable telephones are mostly used from 9:00 in the morning to 5:00 in the afternoon, but they are hardy used between 9:00 at night and 6:00 in the morning. On the other hand at a train station in a residential neighborhood, portable telephones are mostly used between 6:00 and 9:00 in the morning and between 5:00 and 9:00 at night. But at main terminals like Tokyo and Shinjuku stations portable telephones will be used throughout the day from 9:00 to 9:00.
The use of portable telephones at home is basically just for incoming calls between 6:00 in the evening to midnight, since outgoing calls are make using an ordinary phone, so it cannot be expected that portable telephones (especially for outgoing calls) will be used much in the home.
There is also the case where a special event causes a sudden demand on the system in an area where there is no need for such capacity. An example of this is the cell that contains Makuhari Messe; when there is an event going on at the Messe there is an unusually high use of portable telephones, but the problem is when there are no events there is hardly any use of portable telephones.
Therefore, the amount of traffic a base station receives depends upon changes in time and seas on. Currently, this results in the equipment of a base station being set up to accommodate the largest amount of traffic that is expected
SUMMARY OF THE INVENTION
An embodiment of the present invention pools together the equipment assigned to a given base station or a group of base stations (for example, a transceiver can be connected when traffic is heavy) making it possible to redistribute traffic to a specific base station, when it becomes necessary, thereby lightening the load on the equipment throughout the entire system.
Another embodiment of the present invention provides a cell containing a first base station with conventional transceivers and base station facilities, and the antenna of a second base station facility ; the first base station facility is made up of a group of base stations facilities where the equipment is integrated, but the second base station is a conventional local base station. If the conventional base station facilities, each of which has a transceiver, are integrated into an internally integrated base station facility, the result will be the pooling of transceivers in local base stations, which will increase the efficiency of the utilization of the equipment throughout the entire system.
Attached to a portable telephone switching station, are customer data registers, which have information pertaining to the portable telephone contract (for example, connection priority), and there is also a record of the traffic situation of each of the local base stations. This utilization information can be used, for example, in the reassignment of a transceiver of a local base station for which a monitor is indicating high usage (in other words, the integrated base station facility is the equipment and its functionality). A transceiver may have unused capacity and a caller with a low priority may not be assigned to the transceiver even though there is still room, this is due to the capacity is being kept available for a caller with a higher priority, since the assignments are based on priority.
Many providers have separate local base station facilities and are part of the jointly operated integrated base station facilities, other providers use only the jointly operated integrated base station facilities. Due to these different situations, information identifying the correct provider must be included in the customer data registers. Traffic monitors are used by the portable telephone providers to mange the traffic in every cell, so traffic can be assigned to the transceiver, based on the provider with the highest volume or according to a prearranged priority scale.
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patent: 6023625 (2000-02-01), Myers, Jr.
Appiah Charles N.
Eisenzopf Reinhard J.
Lucent Technologies - Inc.
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