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Terminal and method for terminal to transmit uplink signals

A terminal transmission and signal technology, applied in the field of communication, can solve problems such as the inability to meet the time control requirements of multiple receiving methods, and achieve the effect of improving signal transmission performance and flexibility

Active Publication Date: 2013-03-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, for a new network topology in which the uplink signal of a mobile terminal may be jointly received by multiple base stations, the existing time control method for the uplink signal cannot meet the time control requirements of multiple receiving methods

Method used

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  • Terminal and method for terminal to transmit uplink signals
  • Terminal and method for terminal to transmit uplink signals
  • Terminal and method for terminal to transmit uplink signals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] This embodiment takes figure 2 The scenario shown is an application environment of the method for transmitting an uplink signal by a mobile terminal, where the mobile terminal is a UE, and the serving base station is a micro base station 2 .

[0098] Multiple uplink power control formulas are set in the UE for each type of uplink signal, and the eNB determines the indication according to the receiving mode of the uplink signal, so that the UE selects the corresponding uplink power control formula to determine the transmit power of the uplink signal according to the indication determined by the eNB.

[0099] For example, for the uplink PUCCH, two uplink power control formulas can be set in the UE:

[0100] P T1 =min{P max , P 0，1 +PL DL，1 +Δ Format，1 +δ 1} (41)

[0101] P T2 =min{P max , P 0，2 +PL DL，2 +Δ Format，2 +δ 2} (42)

[0102] Among them, the uplink power control formula (41) is for the UE to determine the transmission power P of the uplink PDCCH wh...

Embodiment 2

[0116]Similar to Embodiment 1, multiple uplink power control formulas are set for each type of uplink signal in the UE, but each uplink power control formula only performs independent closed-loop control, and other variables of each uplink power control formula do Same configuration.

[0117] For example, for the uplink PUCCH, use the following uplink power control formula to determine the transmit power of the uplink PUCCH:

[0118] P T1 =min{P max , P 0 +PL DL +Δ Format +δ 1} (71)

[0119] P T2 =min{P max , P 0 +PL DL +Δ Format +δ 2} (72)

[0120] From the above uplink power control formula (71) and uplink power control formula (72), it can be seen that for different uplink power control formulas P 0 ,Δ Format Do the same configuration, and let UE use the same path loss estimation PL DL , but each process performs closed-loop power control independently, that is, δ 1 and δ 2 Perform independent adjustments, and adjust δ in each uplink power control formula ...

Embodiment 3

[0130] This embodiment is further simplified compared to the previous two embodiments. In this embodiment, each UE is provided with multiple uplink power control formulas. Among these uplink power control formulas, one uplink power control formula is used as a reference, and other uplink power control formulas are obtained by adding a compensation value to the reference. The offset is obtained.

[0131] For example, two uplink power control formulas are set in the UE for the uplink PUCCH, and one of the uplink power control formulas is used as a reference, such as the uplink power control formula (1). Assume that the transmit power calculated by using the benchmark, that is, the uplink power control formula (1) is P T1 , then another uplink power control formula is to add a compensation value on the basis of uplink power control formula (1), namely

[0132] P T2 =P T1 +Δ procedure . where Δ procedure It is the compensation value, that is, the offset value. This compens...

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Abstract

The invention relates to a terminal and a method for the terminal to transmit uplink signals. The method includes receiving an instruction which is transmitted by a serving base station and is used for determining transmission power; selecting an uplink power control formula from multiple uplink power control formulas according to the instruction; obtaining the transmission power of an uplink signal by the selected uplink power control formula; and transmitting the unlink signal by the transmission power. The uplink power control formula is selected from the multiple uplink power control formulas according to the instruction of the serving base station, so that the terminal can select the corresponding unlink power control formulas to determine the transmitted signals according to receiving modes, power control requirements under the current different receiving modes are met, the corresponding unlink power control formulas can also be used for different configuration parameters of acyclic SRSs (sounding reference signals), the proper transmission power is determined so as to transmit the unlink signals, and the unlink transmission power control flexibility and the signal transmission performance of the terminal are improved.

Description

technical field [0001] The present invention relates to the field of communication technology, and in particular to a method for a terminal to transmit an uplink signal and the terminal, and a method for receiving the uplink signal transmitted by the terminal and a base station. Background technique [0002] In the uplink of the wireless communication system, that is, the link from the terminal to the base station, the mobile terminal, such as user equipment (User Equipment, UE), needs to determine the power of the transmitted signal, which is the transmission power, so that the mobile terminal can transmit When the signal arrives at the base station, such as an evolved node (Evolved Node B, eNB), the power is kept at a level suitable for the base station to receive. [0003] When the mobile terminal determines the transmit power of the uplink signal, it obtains the transmit power of the uplink signal according to its own maximum transmit power, the measured downlink path lo...

Claims

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Application Information

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IPC IPC(8): H04W52/14H04W52/24
CPCH04W52/40H04W52/242H04W52/14H04W52/28H04W52/325H04W52/245H04W56/00H04W52/146H04W56/0045H04W52/54
Inventor 李强
Owner HUAWEI TECH CO LTD
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