초록 ▼

A system, method, and apparatus for performing a handover for mobile station are presented. Where a mobile station in a preexisting cellular network approaches the service area of a next generation network, the serving base station transmits a cell neighbor list to the mobile station. The cell neigh

A system, method, and apparatus for performing a handover for mobile station are presented. Where a mobile station in a preexisting cellular network approaches the service area of a next generation network, the serving base station transmits a cell neighbor list to the mobile station. The cell neighbor list includes nearby base stations within the preexisting cellular network as well as the next generation network. The mobile station can then measure the signal strength on the handover measurement channels of the cells in the next generation network. A method and associated apparatus for measuring the handover measurement channels of base stations in a next generation network using Code Division Multiple Access (CDMA), are also presented.

대표청구항 ▼

A system, method, and apparatus for performing a handover for mobile station are presented. Where a mobile station in a preexisting cellular network approaches the service area of a next generation network, the serving base station transmits a cell neighbor list to the mobile station. The cell neigh

A system, method, and apparatus for performing a handover for mobile station are presented. Where a mobile station in a preexisting cellular network approaches the service area of a next generation network, the serving base station transmits a cell neighbor list to the mobile station. The cell neighbor list includes nearby base stations within the preexisting cellular network as well as the next generation network. The mobile station can then measure the signal strength on the handover measurement channels of the cells in the next generation network. A method and associated apparatus for measuring the handover measurement channels of base stations in a next generation network using Code Division Multiple Access (CDMA), are also presented. n the determining. 2. A method of communication between a base station having a communication zone and a mobile unit, comprising: determining an actual location and direction of travel of the mobile unit relative to a dead zone within the communication zone by comparing a present location and direction of travel of the mobile unit with stored dead zone information, the dead zone being a geographical area subject to at least one of: signal shadowing; signal reflection; signal absorption; and signal interference, wherein the determining further comprises: determining a rate of travel of the mobile unit towards a dead zone; and estimating an amount of time before the mobile unit enters a dead zone based on the rate of travel and location of the mobile unit, and scheduling communication between the base station and the mobile unit based on the determining, wherein the scheduling comprises: estimating an amount of time required to transmit a quantity of data; comparing the estimated amount of time before the mobile unit enters a dead zone to the estimated amount of time required to transmit the quantity of data; and if the estimated amount of time required to transmit the quantity of data is greater than the estimated time before the mobile unit enters a dead zone, then delaying transmission of the quantity of data. 3. A method of communication between a base station having a communication zone and a mobile unit, comprising: determining an actual location and direction of travel of the mobile unit relative to an identified communication area within the communication zone, wherein the determining comprises: utilizing global positioning satellites to obtain current geographical location information in the mobile unit; transmitting the current geographical location information from the mobile unit to the base station; determining a rate of travel of the mobile unit towards a dead zone; estimating an amount of time before the mobile unit enters a dead zone and an amount of time to traverse the dead zone by the mobile unit, based on the determined rate of travel, location and direction of travel of the mobile unit; and prior to entering a dead zone, estimating and transmitting geographical coordinates corresponding to an approximate dead zone exit location from the base station to the mobile unit; upon the mobile unit entering the dead zone, ceasing communication between the mobile unit and the base station; detecting in the mobile unit when the estimated dead zone exit coordinates have been reached and then attempting to resume communication between the mobile unit and the base station; and redefining dead zone exit coordinates based on the location where communication is successfully resumed if that location is different from the estimated dead zone exit coordinates; and scheduling communication between the base station and the mobile unit based on the determining. 4. A method of communication between a base station having a communication zone and a plurality of mobile units, comprising: determining an actual location and direction of travel of the mobile unit relative to an identified communication area within the communication zone; and scheduling communication between the base station and the mobile unit based on the determining, wherein the scheduling comprises prioritizing mobile unit and base station transmissions when a mobile unit reaches a location within a predetermined distance from the communication area, and wherein communication between mobile units and the base station is based on multiplexing the transmission resources of the base station among mobile units with which the base station is communicating, and wherein the prioritizing comprises: allotting additional transmission resources to a mobile unit that has reached the location within the predetermined distance from the communication area. 5. The method according to claim 4, further comprising: storing information for tr