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Power adjusting methods and base station

A technology for power adjustment and power adjustment amount, which is applied in power management, wireless communication, electrical components, etc., and can solve the problems of short adjustment step, unreachable, and unstable subframe position.

Active Publication Date: 2014-09-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the closed-loop power adjustment step used in existing standards is too short to achieve the goal of quickly increasing the power in a short period of time.
And because the subframe configuration can be dynamically configured, the position of the subframe that generates strong interference is not fixed

Method used

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  • Power adjusting methods and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0302] In the current version of the standard, the TPC command is indicated to the UE through the TPC field in DCI format0 / 3 / 4 / 3A. Specifically, the closed-loop power adjustment amount corresponding to the value indicated in each TPC field is shown in Table 2 and Table 3. To configure multiple groups of closed-loop power adjustments is to change the specific closed-loop power adjustment corresponding to the value indicated in each TPC field in Table 2 and Table 3. The mapping relationship between the value indicated in the TPC field and the closed-loop power adjustment after configuration is as follows Table 4 and Table 5 are shown.

[0303] Table 4 Closed-loop power adjustment corresponding to the value indicated in the TPC field in DCI format0 / 3 / 4

[0304]

[0305] Table 5 Closed-loop power adjustment corresponding to the value indicated in the TPC field in DCI format3A

[0306]

[0307] Among them, {A1, A2, A3, A4; B1, B2, B3, B4; C1, C2} can correspond to the follo...

Embodiment 2

[0313] In the current version of the standard, the TPC command is indicated to the UE through the TPC field in DCI format0 / 3 / 4 / 3A. Among them, the TPC field in DCI format0 / 3 / 4 has 2 bits, and the TPC field in DCI format3A has 1 bit. This specific embodiment is to expand the indication bits of the TPC field in the existing DCI format0 / 3 / 4 / 3A. Preferably, the TPC field in the DCI format0 / 3 / 4 is extended from the original 2bit to 3bit, and the DCI format3A The TPC domain in the extension from the original 1bit to 2bit. After the extension, for DCI format0 / 3 / 4, the TPC field has 3 bits, and the bit '000' represents the TPC field indication value of '0', and the bit '001' represents the TPC field indication value of '1', respectively. Bit '010' indicates that the TPC domain indication value is '2', bit '011' indicates the TPC domain indication value is '3', bit '100' indicates the TPC domain indication value is '4', and bit '101' indicates The indicated value of the TPC field is ...

Embodiment 3

[0323] In this embodiment, a new closed-loop power control value corresponding to the existing TPC command is obtained by adding multiple TPC offset values ​​and using the closed-loop power control value indicated by the existing TPC command plus the offset value indicated by the signaling.

[0324]Preferably, if there are two newly added TPC offset values, A dB and B dB respectively, where A and B are both integers, then the signaling indicating the offset requires 1 bit, and a bit '0' can be used to indicate AdB, using Bit '1' indicates B dB. When the 1-bit signaling indicates that the offset value is A dB, the value of the power adjustment amount indicated by the TPC field in DCIformat0 / 3 / 4 / 3A is shown in Table 2 and Table 3, and the actual closed-loop power adjustment amount is shown in Table 2 and Table 3. The sum of the value indicated in 3 and the indicated offset value. If the 1-bit signaling indicates that the offset value is B dB, the actually indicated closed-loop ...

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Abstract

A power adjustment method and a base station. The method is applied to a base station side, and comprises: instructing a terminal within a service range to use a designated power adjustment value of a designated closed-loop power adjustment amount group to adjust a transmission power of a designated uplink subframe, wherein the designated closed-loop power adjustment amount group is one of more than two closed-loop power adjustment amount groups configured for the uplink subframe of the terminal by a base station; and among the more than two closed-loop power adjustment amount groups, each closed-loop power adjustment amount group contains more than one power adjustment value. The other method is applied to the base station side, and comprises: instructing a terminal within a service range to use a designated deviation value, in combination with a TPC domain in a downlink control information format sent to the terminal, to adjust the transmission power of the designated uplink subframe, wherein the designated deviation value is one of more than two power deviation values configured for the uplink subframe of the terminal by the base station. The base station comprises a configuration module and an indication module.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a power adjustment method and a base station. Background technique [0002] In the TDD working mode of the Time Division Duplex (TDD for short) system or the Long Term Evolution (LTE for short) system, since the uplink service and the downlink service use time division multiplexing, the TDD system The uplink and downlink subframe configurations are not in a one-to-one correspondence. According to the different rates of uplink and downlink services, the configuration formats of the seven subframes are shown in Table 1. [0003] Table 1 Schematic diagram of subframe configuration format [0004] [0005] Among them, "D" indicates a subframe dedicated to downlink transmission, "U" indicates a subframe dedicated to uplink transmission, "S" indicates a downlink pilot time slot (Downlink Pilot Time Slot, referred to as DwPTS), guard interval (Guard Period, GP for short) and Up...

Claims

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Application Information

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IPC IPC(8): H04W52/08H04W88/08
CPCH04W52/08
Inventor 王喜瑜任璐郝鹏李儒岳李卫敏
Owner ZTE CORP
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