Carrier indication in a bandwidth aggregated wireless communications systems
First Claim
1. A method of wireless communication of data between a user equipment and a base station including bandwidth aggregation of a plurality of component carriers, comprising the steps of:
- a first unit of the user equipment or the base station transmitting in a first component carrier to the other unit of the user equipment or the base station a grant control signal indicating grant of schedule to transmit data from said other unit to said first unit,said grant control signal specifying a second component carrier different from said first component carrier to transmit said data;
said first unit transmits a carrier indication field indicating said second component carrier;
said carrier indication field includes an encoding specifying a component carrier offset from an anchor carrier; and
said other unit transmitting said data to said first unit on said second component carrier.
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Accused Products
Abstract
In this invention wireless communication of data between a user equipment and a base station including bandwidth aggregation of a plurality of component carriers, includes a first unit transmitting on a first component carrier a grant control signal the other unit specifying a second component carrier different to transmit the typically via a carrier indication field of 3 bits. The carrier indication field can be a one-to-one mapping to each possible second component carrier of a component carrier offset from an anchor carrier, which could be the first component carrier.
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Citations
8 Claims
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1. A method of wireless communication of data between a user equipment and a base station including bandwidth aggregation of a plurality of component carriers, comprising the steps of:
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a first unit of the user equipment or the base station transmitting in a first component carrier to the other unit of the user equipment or the base station a grant control signal indicating grant of schedule to transmit data from said other unit to said first unit, said grant control signal specifying a second component carrier different from said first component carrier to transmit said data; said first unit transmits a carrier indication field indicating said second component carrier; said carrier indication field includes an encoding specifying a component carrier offset from an anchor carrier; and said other unit transmitting said data to said first unit on said second component carrier.
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2. A method of wireless communication of data between a user equipment and a base station including bandwidth aggregation of a plurality of component carriers, comprising the steps of:
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a first unit of the user equipment or the base station transmitting in a first component carrier to the other unit of the user equipment or the base station a grant control signal indicating grant of schedule to transmit data from said other unit to said first unit, said grant control signal specifying a second component carrier different from said first component carrier to transmit said data; said first unit transmits a carrier indication field indicating said second component carrier; said carrier indication field includes an encoding specifying a component carrier offset from an anchor carrier; a positive carrier indication field specifies a component carrier having a frequency higher than a frequency of said anchor carrier; and a negative carrier indication field specifies a component carrier having a frequency lower than said frequency of said anchor carrier; and said other unit transmitting said data to said first unit on said second component carrier.
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3. A method of wireless communication of data between a user equipment and a base station including bandwidth aggregation of a plurality of component carriers, comprising the steps of:
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a first unit of the user equipment or the base station transmitting in a first component carrier to the other unit of the user equipment or the base station a grant control signal indicating grant of schedule to transmit data from said other unit to said first unit, said grant control signal specifying a second component carrier different from said first component carrier to transmit said data; said first unit transmits a carrier indication field indicating said second component carrier; said carrier indication field includes an encoding specifying a component carrier offset from said first component carrier; and said other unit transmitting said data to said first unit on said second component carrier.
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4. A method of wireless communication of data between a user equipment and a base station including bandwidth aggregation of a plurality of component carriers, comprising the steps of:
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a first unit of the user equipment or the base station transmitting in a first component carrier to the other unit of the user equipment or the base station a grant control signal indicating grant of schedule to transmit data from said other unit to said first unit, said grant control signal specifying a second component carrier different from said first component carrier to transmit said data; said first unit transmits a carrier indication field indicating said second component carrier; said carrier indication field includes an encoding specifying a component carrier offset from said first component carrier as;
mod(n+CC_offset,Nmax)where;
n is the index of the first component carrier;
CC_offset is an offset indicated by said component carrier offset; and
Nmax is the maximum number of aggregated carriers; andsaid other unit transmitting said data to said first unit on said second component carrier.
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5. A method of wireless communication of data between a user equipment and a base station including bandwidth aggregation of a plurality of component carriers, comprising the steps of:
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a first unit of the user equipment or the base station transmitting in a first component carrier to the other unit of the user equipment or the base station a grant control signal indicating grant of schedule to transmit data from said other unit to said first unit, said grant control signal specifying a second component carrier different from said first component carrier to transmit said data; said first unit transmits a carrier indication field indicating said second component carrier; said carrier indication field includes an encoding specifying a component carrier offset from said first component carrier as;
mod(n+CC_offset,NDL)for data transmission from said base station to said user equipment, and
mod(n+CC_offset,NUL)for data transmission from said user equipment to said base station, where;
n is the index of the first component carrier;
CC_offset is an offset indicated by said component carrier offset;
NDL is a user equipment specific number of component carriers devoted to downlink communication; and
NUL is a user equipment specific number of component carriers devoted to uplink communication; andsaid other unit transmitting said data to said first unit on said second component carrier.
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6. A method of wireless communication of data between a user equipment and a base station including bandwidth aggregation of a plurality of component carriers, comprising the steps of:
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a first unit of the user equipment or the base station transmitting in a first component carrier to the other unit of the user equipment or the base station a grant control signal indicating grant of schedule to transmit data from said other unit to said first unit, said grant control signal specifying a second component carrier different from said first component carrier to transmit said data; said first unit transmits a carrier indication field indicating said second component carrier; said first unit transmits said carrier indication field via physical downlink control channel; and if said carrier indication field erroneously indicates an inaccessible component carrier, said other unit aborts data transmission.
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7. A method of wireless communication of data between a user equipment and a base station including bandwidth aggregation of a plurality of component carriers, comprising the steps of:
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a first unit of the user equipment or the base station transmitting in a first component carrier to the other unit of the user equipment or the base station a grant control signal indicating grant of schedule to transmit data from said other unit to said first unit, said grant control signal specifying a second component carrier different from said first component carrier to transmit said data; said first unit transmits a carrier indication field indicating said second component carrier; said first unit transmits said carrier indication field via physical downlink control channel; and if said carrier indication field erroneously indicates an inaccessible component carrier, said other unit transmits data on a default second component carrier.
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8. A method of wireless communication of data between a user equipment and a base station including bandwidth aggregation of a plurality of component carriers, comprising the steps of:
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a first unit of the user equipment or the base station transmitting in a first component carrier to the other unit of the user equipment or the base station a grant control signal indicating grant of schedule to transmit data from said other unit to said first unit, said grant control signal specifying a second component carrier different from said first component carrier to transmit said data; said first unit transmits a carrier indication field indicating said second component carrier; said first unit transmits said carrier indication field via physical downlink control channel; and if said carrier indication field erroneously indicates an inaccessible component carrier, said other unit transmits data on a default second component carrier having a default offset from an anchor carrier.
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Specification