Method for controlling uplink power of long term evolution system, base station, mobile terminal

A mobile terminal, comprising:

• an obtaining module, configured to obtain uplink transmit powers of carriers;
• comparing module, configured to:
• compare whether a difference between the uplink transmit powers of different carriers obtained by the obtaining module exceeds a specific threshold, the specific threshold determined according to a power amplifier parameter applied to carrier aggregation and receiver performance of the mobile terminal, or compare whether a sum of the uplink transmit powers of carriers obtained by the obtaining module exceeds a preset threshold;
• and
• a notifying module, configured to send first notification signaling to a base station when the difference between the obtained uplink transmit powers of different carriers exceeds the specific threshold, or configured to send second notification signaling to a base station when the sum of the obtained uplink transmit powers of the carriers exceeds the preset threshold,
• wherein the comparing module comprises:
• a specific threshold determining submodule, configured to determine the specific threshold M2 according to a difference between the power amplifier parameter PT applied to the carrier aggregation and the receiver performance parameter Δ2 of the mobile terminal, wherein M2=PT−Δ2;
• the comparing module comprises:
• a preset threshold determining submodule, configured to determine the preset threshold M1 according to a difference between a minimum value Pmax and a resource management parameter Δl planned by a network, wherein the minimum value Pmax is a smaller value of maximum transmit power of the mobile terminal and maximum allowed power configured by the base station, wherein M1=Pmax−Δ1.

A method for controlling uplink power of a Long Term Evolution (LTE) system, comprising:

• receiving first notification signaling or second notification signaling sent by a mobile terminal, wherein the first notification signaling carries information indicating that a difference between uplink transmit powers of different carriers exceeds a specific threshold, the specific threshold determined according to a power amplifier parameter applied to carrier aggregation and receiver performance of the mobile terminal, and the second notification signaling carries information indicating that a sum of the uplink transmit powers of carriers exceeds a preset threshold;
• and
• performing carrier adjustment according to the information carried in the first notification signaling which indicates that the difference between the uplink transmit powers of different carriers exceeds the specific threshold, or according to the information carried in the second notification signaling which indicates that the sum of the uplink transmit powers of carriers exceeds the preset threshold, wherein the specific threshold comprises:
• M2=PT−Δ2, wherein
• M2 is the specific threshold, PT is determined according to the power amplifier parameter applied to the carrier aggregation, and Δ2 is determined according to the receiver performance of the mobile terminal;
• the preset threshold comprises:
• M1=Pmax−Δ1, wherein
• M1 is the preset threshold, Pmax is a smaller value of the maximum transmit power of the mobile terminal and the maximum allowed power configured by the base station, and Δ1 is determined according to the resource management parameter planned by a network.

A base station, comprising:

• a receiving unit, configured to receive first notification signaling or second notification signaling sent by a mobile terminal, wherein the first notification signaling carries information indicating that a difference between uplink transmit powers of different carriers exceeds a specific threshold, the specific threshold determined according to a power amplifier parameter applied to carrier aggregation and receiver performance of the mobile terminal, and the second notification signaling carries information indicating that a sum of the uplink transmit powers of carriers exceeds a preset threshold;
• and
• a carrier adjusting unit, configured to perform carrier adjustment according to the information carried in the first notification signaling which indicates that the difference between the uplink transmit powers of different carriers exceeds the specific threshold, or according to the information carried in the second notification signaling which indicates that the sum of the uplink transmit powers of carriers exceeds the preset threshold,
• wherein when the carrier adjusting unit is configured to perform carrier adjustment according to the information carried in the first notification signaling, the carrier adjusting unit comprises:
• a first determining subunit, configured to determine whether a power control requirement is fulfilled by adjusting obtained uplink power of a heavier-loaded carrier to a lighter-loaded carrier, or determine whether a power control requirement is fulfilled by decreasing physical resource blocks of a non real-time service,
• a first uplink power adjusting subunit, configured to adjust uplink power of the heavier-loaded carrier to the lighter-loaded carrier after the first determining subunit determines that the power control requirement is fulfilled by adjusting the obtained uplink power of the heavier-loaded carrier to the lighter-loaded carrier,
• a first physical resource block adjusting subunit, configured to decrease the physical resource blocks of the non real-time service after the first determining subunit determines that the power control requirement is fulfilled by decreasing the physical resource blocks of the non real-time service, and
• a carrier interrupting subunit, configured to interrupt a low-performance carrier:
• or
• wherein when the carrier adjusting unit is configured to perform carrier adjustment according to the information carried in the second notification signaling, the carrier adjusting unit comprises:
• a second determining subunit, configured to determine whether a power control requirement is fulfilled by adjusting obtained uplink power of a heavier-loaded carrier to a lighter-loaded carrier, or determine whether a power control requirement is fulfilled by decreasing physical resource blocks of a non real-time service, or determine whether sending service data on the carriers is deferrable,
• a second uplink power adjusting subunit, configured to adjust uplink power of the heavier-loaded carrier to the lighter-loaded carrier after the second determining subunit determines that the power control requirement is fulfilled by adjusting the obtained uplink power of the heavier-loaded carrier to the lighter-loaded carrier,
• a second physical resource block adjusting subunit, configured to decrease the physical resource blocks of the non real-time service after the second determining subunit determines that the power control requirement is fulfilled by decreasing the physical resource blocks of the non real-time service,
• a carrier interrupting subunit, configured to interrupt a low-performance carrier, and
• a sending deferring subunit, configured to defer sending the service data that is on the carriers and affix a mark if the second determining subunit determines that the sending of the service data on the carriers is deferrable.