Method and apparatus for assigning codes
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorKeijiro Take
Life of this patent
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Abstract
A base station controller selects codes corresponding to rate information included in a new starting call message from a mobile station, and further selects codes assignable to the mobile station out of the selected codes as candidate codes. Then, the base station controller detects codes which meet both the characteristics of being at upper level of the candidate codes in the tree structure and being assignable to other mobile station, and further detects levels of the detected codes. Detected levels for all the candidate codes are compared to find a candidate code whose level is the lowest and to assign the candidate code to the mobile station sending the new starting call message.
Claims2
A mobile station used for a radio communication system employing CDMA (Code Division Multiple Access) for ratio access and providing multi-rate transmission, the mobile station comprising a switching unit for receiving code information for switching a first code, having been used, to a second code, receiving timing information regarding timing of switching the first code to the second code, and switching the first code to the second code based on the code information and the timing information received,
- wherein the timing information is used for switching the first code to the second code at a base station.
A radio communication method of mobile station used for a radio communication system employing CDMA (Code Division Multiple Access) for ratio access and providing multi-rate transmission, the radio communication method comprising:
- receiving code information for switching a first code, having been used, to a second code,
- receiving timing information regarding timing of switching the first code to the second code, and
- switching the first code to the second code based on the code information and the timing information received,
- wherein the timing information is used for switching the first code to the second code at a base station.
Dependencies are inferred from the claim text.