Device and method of designating spreading code for forward common channel
First Claim
1. A base station communication device for a code division multiple access (CDMA) communication system, comprising:
- a first channel transmitter for transmitting a control message including information representative of a spreading code for designating a specific forward common channel for a specific mobile station, to said mobile station via a forward common channel; and
a second channel transmitter for spreading user data with said spreading code upon reception of a response to the control message and transmitting the spread user data via said specific forward common channel.
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Accused Products
Abstract
A CDMA communication system transmits packet data via a designated forward channel which uses a particular spreading code, in the case where a base station has the packet data to send to a mobile station while the mobile sation does not have a dedicated channel established. A base station includes a first channel transmitter for transmitting a control message including information representative of a spreading code for designating a specific forward common channel to a specific mobile station, to the mobile station via a forward common channel, and a second channel transmitter for spreading user data with the spreading code upon reception of a response to the control message and transmitting the spread user data. A mobile station includes a control message analyzer for analyzing a message including information representative of a designated spreading code received via a forward common channel, and a forward common channel receiver for despreading user data spread with the designated spreading code generated based on the information, using the spreading code.
55 Citations
24 Claims
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1. A base station communication device for a code division multiple access (CDMA) communication system, comprising:
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a first channel transmitter for transmitting a control message including information representative of a spreading code for designating a specific forward common channel for a specific mobile station, to said mobile station via a forward common channel; and
a second channel transmitter for spreading user data with said spreading code upon reception of a response to the control message and transmitting the spread user data via said specific forward common channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A mobile station communication device for a CDMA communication system, comprising:
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a control message analyzer for analyzing a message including information representative of a designated spreading code received via a forward common channel; and
a forward common channel receiver for receiving data via a forward common channel specified by a base station, and despreading user data spread with the designated spreading code generated based on said information, using said spreading code. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A mobile station communication device for a CDMA communication system, comprising:
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a reverse common channel transmitter for transmitting a message requesting a designated spreading code to be used for a forward common channel;
a forward common channel receiver for receiving via a forward common channel specified by a base station a message including information representative of the designated spreading code in response to the request message; and
a forward common channel receiver for despreading a forward common channel message spread with the designated spreading code, using the designated spreading code.
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16. A communication method of a base station in a CDMA communication system, comprising:
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transmitting a control message including information representative of a spreading code for designating a specific forward common channel to a specific mobile station, to said mobile station via a forward common channel; and
spreading user data with said spreading code upon reception of a response to the control message and transmitting the spread user data via said specific forward common channel. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. A communication method of a mobile station in a CDMA communication system, comprising:
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transmitting a message requesting a designated spreading code to be used for a forward common channel;
receiving via a forward common channel specified by a base station a message including information representative of the designated spreading code in response to the request message; and
despreading a forward common channel message spread with the designated spreading code, using the designated spreading code.
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Specification