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Method for acquiring transmission power control command, acquisition preprocessing method, and mobile terminal

A technology of transmission power control and power control, which is applied in the field of communication, can solve problems such as not providing terminals with access to power control commands, and achieve the effect of effective and flexible uplink power control

Inactive Publication Date: 2010-02-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no way for terminals to obtain their own power control commands from DCI format 3 / 3A

Method used

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  • Method for acquiring transmission power control command, acquisition preprocessing method, and mobile terminal
  • Method for acquiring transmission power control command, acquisition preprocessing method, and mobile terminal
  • Method for acquiring transmission power control command, acquisition preprocessing method, and mobile terminal

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0072] Example 1: The cell sends the TPC command of the terminal A through the uplink power control group signaling DCI format 3, which is used for power control of the PUCCH channel and is applicable to the scenario of RRC connection establishment.

[0073] Figure 7 The processing in this instance is given, such as Image 6 Shown:

[0074] The terminal obtains the TPC stepsize parameter through the system broadcast message, that is, the uplink power control information unit (Uplink Power Control Common) in the system information block 2 (SIB2), and according to this parameter, it knows that the uplink power control group signaling at this time adopts DCIformat 3 .

[0075] The terminal obtains the Group-RNTI used to detect the DCI format 3 signaling where its own TPC command is located through the uplink power dedicated control information element (Uplink Power ControlDedicated) of the RRC connection set up (RRC connectionset up) message in the dedicated RRC signaling. Th...

example 2

[0078] Example 2: The cell sends the TPC command of terminal A through the uplink power control group signaling DCI format 3A, which is used for power control of the PUCCH channel, and is applicable to RRC connection reconfiguration and cell handover scenarios.

[0079] Figure 8 The processing in this instance is given, such as Figure 7 Shown:

[0080] The terminal obtains the TPC step size parameter through the system broadcast message, that is, the uplink power common control information element in the system information block 2 (SIB2), and learns that the uplink power control group signaling at this time adopts DCI format 3A according to the parameter.

[0081] The terminal acquires the Group-RNTI used to detect the DCI format3A signaling where its own TPC command is located through the uplink power dedicated control information element (Uplink PowerControl Dedicated) of the RRC connection reconfiguration (RRC connectionreconfiguration) message in the dedicated RRC signa...

example 3

[0084] Example 3: The cell sends the TPC command of terminal A through the uplink power control group signaling DCI format 3, which is used for power control of the PUCCH channel, and is applicable to RRC connection reconfiguration and cell handover scenarios.

[0085] In this example, it is assumed that DCI format 3 contains at most TPC commands of 14 terminals, that is, the payload of DCI format 3 is 28 bits, that is, Nmax=14, P=28.

[0086] Figure 9 The processing in this instance is given, such as Figure 8 Shown:

[0087] The terminal obtains the TPC step size parameter through the system broadcast message, that is, the uplink power common control information element in the system information block 2 (SIB2), and learns that the uplink power control group signaling at this time adopts DCI format 3 according to the parameter.

[0088] The terminal obtains the Group-RNTI used to detect the DCIformat 3 signaling where its own TPC command is located through the uplink power...

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Abstract

The invention discloses a method for acquiring a transmission power control command, an acquisition preprocessing method, and a mobile terminal. The acquiring method comprises that: a terminal acquires a power control step parameter through a broadcast system message and determines the format of an uplink power control group signal through the power control step parameter; the terminal acquires awireless network temporary group identifier required for detecting the uplink power control group signaling comprising the power control command through a high-level signaling; the terminal acquires index information for identifying the position of the transmission power control command of the terminal in the uplink power control group signaling through the high-level signaling or pre-treatment; and the terminal acquires a transmission power control command belonging to the terminal from the uplink power control group signaling according to the determined format of the uplink power control group signaling, the wireless network temporary group identifier and the index information. The invention enables the base station to realize effective and flexible uplink power control.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method for acquiring a transmission power control command, an acquisition preprocessing method, and a mobile terminal. Background technique [0002] At present, the frame structure of the Long Term Evolution (referred to as LTE) system is divided into two types: Type 1 and Type 2, wherein the Type 1 frame structure is applied to a frequency division duplex mode (Frequency division duplex, referred to as FDD) , the Type 2 frame structure is applied to the time division duplex mode (Time division duplex, referred to as TDD), respectively as figure 1 with figure 2 shown. [0003] Specifically, such as figure 1 As shown, in the LTE frame structure, a 10ms radio frame is divided into two 5ms half-frames, and each half-frame consists of five 1ms subframes. Except for the special subframe of the Type2 frame structure, other subframes are composed of two 0.5ms time slots. For e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/14H04W52/36H04W52/58
CPCY02B60/50
Inventor 喻斌戴博杜忠达郝鹏
Owner ZTE CORP