Circuit switching and packet switching efficient sharing of capacity

Abstract

An improvement to a spread-spectrum, code-division-multiple-access (CDMA) cellular system having multiple circuit-switched (CS) remote stations, multiple packet-switched (PS) remote stations and a base station per cell. The CS-remote station transmits a spread-spectrum CDMA signal, with a chip rate of f c , with a CS-symbol rate of f b , and with a power level P CS . The PS-remote station transmits a spread-spectrum CDMA signal with the chip rate of f c , PS-symbol rate f p , and with a power level P PS . The power level P PS from the PS-remote station and the power level P CS from the CS-remote station are related by a relation of the CS-symbol rate and the PS-symbol rate to efficiently share system capacity.

I claim:  
     
         1 . An improvement to a spread-spectrum, code-division-multiple-access (CDMA) cellular system comprising: 
 a plurality of circuit-switched (CS) remote stations, each CS-remote station for transmitting a spread-spectrum CDMA signal, with a chip rate of f c , with a CS-symbol rate of f b , and with a respective power level P CSi  where i refers to an i th  CS-remote station in the plurality of PS-remote stations;    a plurality of packet-switched (PS) remote stations, each PS-remote station for transmitting a spread-spectrum CDMA signal with the chip rate of f c , with a PS-symbol rate f p , and with a power level P PS1  where i refers to an i th  PS-remote station in the plurality of PS-remote stations; and    wherein the power level P PS1  from the i th  PS-remote station and the power level P CS1  from the i th  CS-remote station are related by a ratio P PS1 /P CS1  being approximately equal to f p /f b .    
     
     
         2 . An improvement to a spread-spectrum, code-division-multiple-access (CDMA) cellular system comprising: 
 a plurality of circuit-switched (CS) remote means, each CS-remote means for transmitting a spread-spectrum CDMA signal, with a chip rate of f c , with a CS-symbol rate of f b , and with a respective power level P CS1  where i refers to an i th  CS-remote station in the plurality of PS-remote stations;    a plurality of packet-switched (PS) remote means, each PS-remote means for transmitting a spread-spectrum CDMA signal with the chip rate of f c , with a PS-symbol rate f p , and with a power level P PS1  where i refers to an i th  PS-remote station in the plurality of PS-remote stations; and    wherein the power level P PS1  from the i th  PS-remote means and the power level P CSi  from the i th  CS-remote means are related by a ratio P PSi /P CS1  being approximately equal to f p /f b .    
     
     
         3 . An improvement to a spread-spectrum, code-division-multiple-access (CDMA) cellular method, the improvement comprising the steps of: 
 transmitting, from a circuit-switched (CS) remote station, a spread-spectrum CDMA signal, with a chip rate of f c , with a CS-symbol rate of f b , and with a power level P CS ;    transmitting, from a packet-switched (PS) remote station, a spread-spectrum CDMA signal with the chip rate of f c , with a PS-symbol rate f p , and with a power level P PS ; and    wherein the power level P CS  from the PS-remote station and the power level P CS  from the CS-remote station are related by a ratio P PS /P CS  being approximately equal to f p /f b .    
     
     
         4 . An improvement to a spread-spectrum, code-division-multiple-access (CDMA) cellular system having packet-switched (PS) signals and circuit-switched (CS) signals, comprising: 
 a base station communicating with a plurality of CS-remote stations;    a PS-remote station for sending a PS-packet to the base station, indicating that the PS-remote station is present in the geographical coverage area of the base station and requesting to send access the PS-spread-spectrum channel on the base station; and    said base station, responding to the packet, for sending a BS-packet indicating any of PS-spread-spectrum channel availability, power level, and capacity availability.    
     
     
         5 . An improvement to a code-division-multiple-access (CDMA) system having a base station, a plurality of circuit-switched (CS) remote stations communicating with the base station having a plurality of spread-spectrum channels including a multiplicity of CS-channels with spread-spectrum modulation, and a packet-switched (PS) remote station, with the plurality of CS-remote stations using all or less than total available capacity at in the plurality of spread-spectrum channels of said base station, comprising the steps of: 
 determining, at said PS-remote station, availability of a PS channel;    determining, at said PS-remote station, available capacity in the plurality of spread-spectrum channels of said base station;    determining, at said PS-remote station, available data rate for data transmission;    determining, at said PS-remote station, a particular chip-sequence signal to be used for the available PS-channel; and    transmitting, using radio waves, to said base station, in response to determining the availability of a PS channel, the available capacity, the available data rate, and the particular chip-sequence signal, a packet having data, with the packet transmitted on the PS channel using all or less than the available capacity and with a particular data rate equal or less than the available data rate, and with the packet having the particular chip-sequence signal.    
     
     
         6 . The improvement to the spread-spectrum, CDMA cellular method as set forth in  claim 5 , with the step of determining the availability of the PS channel including the steps of determining, at said base station, the availability of the PS channel and transmitting, from said base station, information including the available PS channel to said PS-remote station.  
     
     
         7 . The improvement to the spread-spectrum, CDMA cellular method as set forth in  claim 5 , with the step of determining available capacity including the steps of determining, at said base station, available capacity, and transmitting, from said base station, information including the available capacity to said PS-remote station.  
     
     
         8 . The improvement to the spread-spectrum, CDMA cellular method as set forth in  claim 5 , with the step of determining available data rate including the steps of determining, at said base station, the available data rate, and transmitting, from said base station, information including the available data rate to said PS-remote station.  
     
     
         9 . The improvement to the spread-spectrum, CDMA cellular method as set forth in  claim 5 , with the step of determining the particular chip-sequence signal including the steps of determining, at said base station, the particular chip-sequence signal, and transmitting, from said base station, information including the particular chip-sequence signal to said PS-remote station.  
     
     
         10 . An improvement to a spread-spectrum, code-division-multiple-access (CDMA) cellular method having a base station, a plurality of circuit-switched (CS) remote stations communicating with the base station having a plurality of spread-spectrum channels including a multiplicity of CS-channels with spread-spectrum modulation, and a plurality of packet-switched (PS) remote stations with a particular PS-remote station, with the plurality of CS-remote stations using all or less than total available capacity at in the plurality of spread-spectrum channels of said base station, comprising the steps of: 
 determining, at said particular PS-remote station, availability of a PS channel;    determining, at said particular PS-remote station, available capacity in the plurality of spread-spectrum channels of said base station;    determining, at said particular PS-remote station, a power level for packet transmission;    determining, at said particular PS-remote station, a particular chip-sequence signal to be used for the available PS-channel; and    transmitting, using radio waves, to said base station, in response to determining the availability of a PS channel, the available capacity, the power level, and the particular chip-sequence signal, a packet having data, with the packet transmitted on the PS channel using all or less than the available capacity and with the power level, and with the packet having the particular chip-sequence signal.    
     
     
         11 . The improvement to the spread-spectrum, CDMA cellular method as set forth in  claim 10 , with the step of determining the availability of the PS channel including the steps of determining, at said base station, the availability of the PS channel and transmitting, from said base station, information including the available PS channel to said PS-remote station.  
     
     
         12 . The improvement to the spread-spectrum, CDMA cellular method as set forth in  claim 10 , with the step of determining available capacity including the steps of determining, at said base station, available capacity, and transmitting, from said base station, information including the available capacity to said PS-remote station.  
     
     
         13 . The improvement to the spread-spectrum, CDMA cellular method as set forth in  claim 10 , with the step of determining available data rate including the steps of determining, at said base station, the available data rate, and transmitting, from said base station, information including the available data rate to said PS-remote station.  
     
     
         14 . The improvement to the spread-spectrum, CDMA cellular method as set forth in  claim 10 , with the step of determining the particular chip-sequence signal including the steps of determining, at said base station, the particular chip-sequence signal, and transmitting, from said base station, information including the particular chip-sequence signal to said PS-remote station.  
     
     
         15 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 10 , with the step of determining the power level including the steps of determining, from a channel-sounding signal transmitted from said base station to said PS-remote station, the power level.  
     
     
         16 . An improvement to a spread-spectrum, code-division-multiple-access (CDMA) cellular system comprising: 
 a base station having a plurality of spread-spectrum channels including a multiplicity of CS-channels with spread-spectrum modulation;    a plurality of circuit-switched (CS) remote stations communicating on the multiplicity of CS-channels with the base station, with the plurality of CS-remote stations using all or less than total available capacity in the plurality of spread-spectrum channels of said base station;    a packet-switched (PS) remote station for determining, availability of a PS channel, for determining available capacity in the plurality of spread-spectrum channels of said base station, for determining available data rate for data transmission, and for determining a particular chip-sequence signal to be used for the available PS-channel; and    said PS-remote station for transmitting, using radio waves, to said base station, in response to determining the availability of a PS channel, the available capacity, the available data rate, and the particular chip-sequence signal, a packet having data, with the packet transmitted on the PS channel using all or less than the available capacity and with a particular data rate equal or less than the available data rate, and with the packet having the particular chip-sequence signal.    
     
     
         17 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 16 , with said base station for determining the availability of the PS channel and for transmitting information including the available PS channel to said PS-remote station.  
     
     
         18 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 16 , with said base station for determining available capacity, and for transmitting information including the available capacity to said PS-remote station.  
     
     
         19 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 16 , with the said base station for determining the available data rate, and for transmitting information including the available data rate to said PS-remote station.  
     
     
         20 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 16 , with said base station for assigning the particular chip-sequence signal, and for transmitting information including the particular chip-sequence signal to said PS-remote station.  
     
     
         21 . An improvement to a spread-spectrum, code-division-multiple-access (CDMA) cellular system comprising: 
 a base station having a plurality of spread-spectrum channels including a multiplicity of CS-channels with spread-spectrum modulation;    a plurality of circuit-switched (CS) remote stations communicating on the multiplicity of CS-channels with the base station, with the plurality of CS-remote stations using all or less than total available capacity in the plurality of spread-spectrum channels of said base station;    a packet-switched (PS) remote station for determining availability of a PS channel, for determining available capacity in the plurality of spread-spectrum channels of said base station, for determining a power level for packet transmission, and for determining a particular chip-sequence signal to be used for the available PS-channel; and    said PS-remote station for transmitting, using radio waves, to said base station, in response to determining the availability of a PS channel, the available capacity, the power level, and the particular chip-sequence signal, a packet having data, with the packet transmitted on the PS channel using all or less than the available capacity and with the power level, and with the packet having the particular chip-sequence signal.    
     
     
         22 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 21 , with said base station for determining the availability of the PS channel and for transmitting information including the available PS channel to said PS-remote station.  
     
     
         23 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 21 , with said base station for determining available capacity, and for transmitting information including the available capacity to said PS-remote station.  
     
     
         24 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 21 , with the said base station for determining the available data rate, and for transmitting information including the available data rate to said PS-remote station.  
     
     
         25 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 21 , with said base station for assigning the particular chip-sequence signal, and for transmitting information including the particular chip-sequence signal to said PS-remote station.  
     
     
         26 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 21 , with said base station for transmitting, to said PS-remote station, a channel-sounding signal, and with said PS-remote station for determining the power level from the channel-sounding signal.  
     
     
         27 . An improvement to a code-division-multiple-access (CDMA) system having a base station, a plurality of circuit-switched (CS) remote stations communicating with the base station having a plurality of spread-spectrum channels including a multiplicity of CS-channels with spread-spectrum modulation, and a packet-switched (PS) remote station, with the plurality of CS-remote stations using all or less than total available capacity at in the plurality of spread-spectrum channels of said base station, comprising the steps of: 
 determining, at said PS-remote station, available data rate for data transmission; and    transmitting, using radio waves, to said base station, in response to determining the available data rate, a packet having data, with the packet transmitted with a particular data rate equal or less than the available data rate.    
     
     
         28 . The improvement to the spread-spectrum, CDMA cellular method as set forth in  claim 27 , further including the step of determining, at said base station, the availability of a PS channel and transmitting, from said base station, information including the available PS channel to said PS-remote station.  
     
     
         29 . The improvement to the spread-spectrum, CDMA cellular method as set forth in  claim 27 , further including the step of determining, at said base station, available capacity, and transmitting, from said base station, information including the available capacity to said PS-remote station.  
     
     
         30 . The improvement to the spread-spectrum, CDMA cellular method as set forth in  claim 27 , with the step of determining available data rate including the steps of determining, at said base station, the available data rate, and transmitting information including the available data rate to said PS-remote station.  
     
     
         31 . The improvement to the spread-spectrum, CDMA cellular method as set forth in  claim 27 , further including the step of determining, at said base station, the particular chip-sequence signal, and transmitting, from said base station, information including the particular chip-sequence signal to said PS-remote station.  
     
     
         32 . An improvement to a spread-spectrum, code-division-multiple-access (CDMA) cellular method having a base station, a plurality of circuit-switched (CS) remote stations communicating with the base station having a plurality of spread-spectrum channels including a multiplicity of CS-channels with spread-spectrum modulation, and a plurality of packet-switched (PS) remote stations with a particular PS-remote station, with the plurality of CS-remote stations using all or less than total available capacity at in the plurality of spread-spectrum 
 determining, at said particular PS-remote station, a power level for packet transmission; and    transmitting, using radio waves, to said base station, in response to determining the power level, a packet having data, with the packet transmitted with the power level.    
     
     
         33 . The improvement to the spread-spectrum, CDMA cellular method as set forth in  claim 32 , further including the steps of determining, at said base station, an availability of a PS channel and transmitting, from said base station, information including the available PS channel to said PS-remote station.  
     
     
         34 . The improvement to the spread-spectrum, CDMA cellular method as set forth in  claim 32 , further including the steps of determining, at said base station, available capacity, and transmitting, from said base station, information including the available capacity to said PS-remote station.  
     
     
         35 . The improvement to the spread-spectrum, CDMA cellular method as set forth in  claim 32 , with the steps of determining the power level including the steps of determining, at said base station, the power level, and transmitting, from said base station, information including the power level to said PS-remote station.  
     
     
         36 . The improvement to the spread-spectrum, CDMA cellular method as set forth in  claim 32 , further including the steps of determining, at said base station, a particular chip-sequence signal, and transmitting, from said base station, information including the particular chip-sequence signal to said PS-remote station.  
     
     
         37 . The improvement to the spread-spectrum, CDMA cellular method as set forth in  claim 32 , with the step of determining the power level including the steps of determining, from a channel-sounding signal transmitted from said base station to said PS-remote station, the power level.  
     
     
         38 . An improvement to a spread-spectrum, code-division-multiple-access (CDMA) cellular system comprising: 
 a base station having a plurality of spread-spectrum channels including a multiplicity of CS-channels with spread-spectrum modulation;    a plurality of circuit-switched (CS) remote stations communicating on the multiplicity of CS-channels with the base station, with the plurality of CS-remote stations using all or less than total available capacity in the plurality of spread-spectrum channels of said base station;    a packet-switched (PS) remote station for determining available data rate for data transmission; and    said PS-remote station for transmitting, using radio waves, to said base station, in response to determining the available data rate, a packet having data, with the packet transmitted on the PS channel using a particular data rate equal or less than the available data rate.    
     
     
         39 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 38 , further including said base station for determining the availability of a PS channel and for transmitting, from said base station, information including the available PS channel to said PS-remote station.  
     
     
         40 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 38 , further including said base station for determining available capacity, and for transmitting, from said base station, information including the available capacity to said PS-remote station.  
     
     
         41 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 38 , with the said base station for determining the available data rate, and for transmitting, from said base station, information including the available data rate to said PS-remote station.  
     
     
         42 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 38 , further including said base station for assigning a particular chip-sequence signal, and for transmitting, from said base station, information including the particular chip-sequence signal to said PS-remote station.  
     
     
         43 . An improvement to a spread-spectrum, code-division-multiple-access (CDMA) cellular m system comprising: 
 a base station having a plurality of spread-spectrum channels including a multiplicity of CS-channels with spread-spectrum modulation;    a plurality of circuit-switched (CS) remote stations communicating on the multiplicity of CS-channels with the base station, with the plurality of CS-remote stations using all or less than total available capacity in the plurality of spread-spectrum channels of said base station;    a packet-switched (PS) remote station for determining a power level for packet transmission; and    said PS-remote station for transmitting, using radio waves, to said base station, in response to determining the power level, a packet having data, with the packet transmitted on the PS channel using the power level.    
     
     
         44 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 43 , further including said base station for determining an availability of a PS channel and for transmitting information including the available PS channel to said PS-remote station.  
     
     
         45 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 43 , further including said base station for determining available capacity, and for transmitting information including the available capacity to said PS-remote station.  
     
     
         46 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 43 , further including said base station for determining the available data rate, and for transmitting information including the available data rate to said PS-remote station.  
     
     
         47 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 43 , further including said base station for assigning the particular chip-sequence signal, and for transmitting information including the particular chip-sequence signal to said PS-remote station.  
     
     
         48 . The improvement to the spread-spectrum, CDMA cellular system as set forth in  claim 43 , with said base station for transmitting, to said PS-remote station, a channel-sounding signal, and with said PS-remote station for determining the power level from the channel-sounding signal.