Interference management for soft handoff and broadcast services in a wireless frequency hopping communication system

An apparatus in a wireless frequency hopping (FH) communication system, comprising:

• means for obtaining a first FH function;
• means for obtaining an identifier for a first traffic channel defined with the first FH function;
• means for modifying a second FH function based on the first FH function and the identifier for the first traffic channel to obtain a modified second FH function, wherein the second FH function is modified such that a second traffic channel defined with the modified second FH function and the first traffic channel are orthogonal or have low correlation;
• and
• means for using the second traffic channel for data transmission.

A processor readable media for storing instructions operable to:

• obtain a first frequency hopping (FH) function;
• obtain an identifier for a first traffic channel defined with the first FH function;
• and
• modify a second FH function based on the first FH function and the identifier for the first traffic channel to obtain a modified second FH function, wherein the second FH function is modified such that a second traffic channel defined with the modified second FH function and the first traffic channel are orthogonal or have low correlation, and wherein the second traffic channel is used for data transmission on a forward link or reverse link.

A method of managing interference in a wireless frequency hopping (FH) communication system, comprising:

• receiving an assignment of a first traffic channel defined with a first FH function;
• using the first traffic channel for communication with a first base station;
• receiving an assignment of a second traffic channel defined with a second FH function, wherein the first and second FH functions are orthogonal or have low correlation;
• and
• using the second traffic channel for communication with the first base station and a second base station.

An apparatus in a wireless frequency hopping (FH) communication system, comprising:

• means for receiving an assignment of a first traffic channel defined with a first FH function;
• means for using the first traffic channel for communication with a first base station;
• means for receiving an assignment of a second traffic channel defined with a second FH function, wherein the first and second FH functions are orthogonal or have low correlation;
• and
• means for using the second traffic channel for communication with the first base station and a second base station.

An apparatus in a wireless frequency hopping (FH) communication system, comprising:

• a processor operative to receive an assignment of a first traffic channel defined with a first FH function and provide a first FH sequence for the first traffic channel, wherein the first traffic channel is used for communication with a first base station;
• and
• a switch operative to determine a particular one of a plurality of frequency subbands to use in each of a first plurality of frequency hop periods based on the first FH sequence for the first traffic channel, and
• wherein the processor is further operative to receive an assignment of a second traffic channel defined with a second FH function and provide a second FH sequence for the second traffic channel, wherein the second traffic channel is used for communication with the first base station and a second base station, and wherein the switch is further operative to determine a particular one of a plurality of frequency subbands to use in each of a second plurality of frequency hop periods based on the second FH sequence for the second traffic channel.

A method of managing interference in a wireless frequency hopping (FH) communication system, comprising:

• receiving a first transmission on a first traffic channel from a first base station, wherein the first traffic channel is defined with a first FH function associated with the first base station;
• and
• receiving a second transmission on a second traffic channel from the first base station and a second base station, wherein the second traffic channel is defined with a second FH function, wherein a third FH function is associated with the second base station, wherein the second FH function is orthogonal to or has low correlation with both the first and third FH functions, and wherein the first FH function is pseudo-random with respect to the third FH function;
• obtaining an identifier for a third traffic channel defined with the second FH function, wherein the third traffic channel is associated with the first traffic channel, and wherein the second FH function is further modified based on the identifier for the third traffic channel;
• wherein the modified second FH function is given as:
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• where r is the identifier for the first traffic channel,
• k is an identifier for the second traffic channel,
• v is the identifier for the third traffic channel,
• T is indicative of system time,
• is the first FH function, which indicates a particular subband to use for traffic channel r in time T, is the second FH function, and
• is the modified second FH function.

An apparatus in a wireless frequency hopping (FH) communication system, comprising:

• means for receiving a first transmission on a first traffic channel from a first base station, wherein the first traffic channel is defined with a first FH function associated with the first base station;
• and
• means for receiving a second transmission on a second traffic channel from the first base station and a second base station, wherein the second traffic channel is defined with a second FH function, wherein a third FH function is associated with the second base station, wherein the second FH function is orthogonal to or has low correlation with both the first and third FH functions, and wherein the first FH function is pseudo-random with respect to the third FH function;
• means for obtaining an identifier for a third traffic channel defined with the second FH function, wherein the third traffic channel is associated with the first traffic channel, and wherein the second FH function is further modified based on the identifier for the third traffic channel;
• wherein the modified second FH function is given as:
• f
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• 2
• ⁡
• (
• k
• ,
• T
• )
• =
• {
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• ⁡
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• v
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• otherwise
• ⁢
• where r is the identifier for the first traffic channel,
• k is an identifier for the second traffic channel,
• v is the identifier for the third traffic channel,
• T is indicative of system time,
• is the first FH function, which indicates a particular subband to use for traffic channel r in time T, is the second FH function, and
• is the modified second FH function.