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A method and apparatus for operating a first base station in a cellular telecommunications system, wherein the first base station has first and second transceivers that receive radio signals that are divided into uplink time slots, includes operating the first transceiver in synchronization with a f

A method and apparatus for operating a first base station in a cellular telecommunications system, wherein the first base station has first and second transceivers that receive radio signals that are divided into uplink time slots, includes operating the first transceiver in synchronization with a first frame of uplink time slots and operating the second transceiver in synchronization with a second frame of uplink time slots, wherein the second frame of uplink time slots are offset by a predetermined amount relative to the first frame of uplink time slots. A united random access channel is formed by using a first time slot in each of the first and second transceivers in combination. A mobile station that transmits an uplink radio frequency burst may access the first base station by having the uplink radio frequency burst received by at least one of the first and second transceivers during that transceiver's first time slot. The uplink radio frequency burst may be received by both the first and second transceivers during the respective first time slots of the first and second transceivers. In this case, a comparison is made between the message contents, frame number and access delay of the bursts received by the first and second transceivers in order to determine that the bursts correspond to an access attempt by one mobile station.

대표청구항 ▼

[ What is claimed is:] [1.] A method of operating a first base station in a cellular telecommunications system, wherein the first base station has first and second transceivers that receive radio signals that are divided into uplink time slots, the method comprising the steps of:operating the first

[ What is claimed is:] [1.] A method of operating a first base station in a cellular telecommunications system, wherein the first base station has first and second transceivers that receive radio signals that are divided into uplink time slots, the method comprising the steps of:operating the first transceiver in synchronization with a first frame of uplink time slots;operating the second transceiver in synchronization with a second frame of uplink time slots, wherein the second frame of uplink time slots are offset by a predetermined amount of time relative to the first frame of uplink time slots; andusing a first time slot in each of the first and second transceivers in combination so as to provide a united random access channel, whereby when a mobile station transmits an uplink radio frequency burst, access of the first base station by the mobile station is recognized if the uplink radio frequency burst is received by the first transceiver during the first transceiver's first time slot, and access of the first base station by the mobile station is recognized if the uplink radio frequency burst is received by the second transceiver during the second transceiver's first time slot,wherein the uplink radio frequency burst is received by both the first and second transceivers during the respective first time slots of the first and second transceivers,and further comprising the steps of:detecting a first access attempt during the first time slot of the first transceiver;detecting a second access attempt during the first time slot of the second transceiver; andcomparing at least one of message contents, frame number and access delay of the first and second access attempts and determining that they correspond to an access attempt by one mobile station on the basis of the comparison.