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Method and device for terminal determining to maintain opening of phase-locked loop

A technology of maintaining lock and phase loop, applied in the field of pilot frequency, which can solve the problems of discontinuous phase of DMRS and inability to demodulate DMRS with data

Active Publication Date: 2018-11-13
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention discloses a method and device for a terminal to determine to keep a phase-locked loop open, so as to solve the problem in the prior art that the phases of data transmission and its corresponding DMRS are discontinuous, which leads to the problem that the DMRS cannot be used for data demodulation

Method used

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  • Method and device for terminal determining to maintain opening of phase-locked loop
  • Method and device for terminal determining to maintain opening of phase-locked loop
  • Method and device for terminal determining to maintain opening of phase-locked loop

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Embodiment 1

[0087] In the embodiment of the present invention, the UE determines whether to keep the phase-locked loop on according to the pre-agreed method. Specifically, the UE determines whether to keep the phase-locked loop on according to the pre-agreed method includes:

[0088] The UE determines to keep the PLL turned on all the time.

[0089] In the embodiment of the present invention, the UE does not need to determine whether there is transmission in each time unit, and keeps the PLL on (PLL on), so that the phase continuity of all symbols can be maintained without additional signaling.

Embodiment 2

[0091] In the embodiment of the present invention, the UE may also determine whether to keep the PLL turned on according to the transmission situation. Specifically, the UE determines whether to keep the PLL turned on according to the transmission situation including:

[0092] If the UE determines that the time unit k1 contains symbols used to transmit DMRS, the UE determines whether to keep the phase-locked loop enabled, including at least one of the following methods:

[0093] The UE determines to keep the PLL turned on in the time slot or subframe where the time unit k1 is located; or

[0094] The UE determines to keep the PLL turned on from the end position of the time unit k1 to the end position of the time slot or subframe where the time unit k1 is located; or

[0095] The UE determines to keep the PLL turned on from the start position of the time unit k1 to the end position of the time slot or subframe where the time unit k1 is located; or

[0096] The UE starts a time...

Embodiment 3

[0133] In order to achieve flexible configuration, when the UE determines whether to keep the PLL started, it may also be determined according to the configuration of the configuration signaling. Specifically, the UE determines whether to keep the PLL enabled according to the configuration of the configuration signaling.

[0134] The UE receives the configuration signaling, and determines whether to keep the PLL enabled according to the indication of the configuration signaling.

[0135] The configuration signaling is sent by the network side equipment to the UE, for example, it may be sent by the eNB.

[0136] Specifically, the UE receives the configuration signaling, and determines whether to keep the phase-locked loop enabled according to the indication of the configuration signaling by using one of the following methods:

[0137] The UE receives high-level signaling, and determines whether to keep the phase-locked loop enabled according to the indication of the high-level ...

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Abstract

The embodiment of the invention discloses a method and a device for terminal determining to maintain opening of a phase-locked loop for solving the problem that in the prior art, DMRS cannot be applied to data demodulation due to phase discontinuity between data transmission and a DMRS corresponding thereto. The method comprises the following step: UE determines whether opening of the phase-lockedloop is maintained according to a pre-agreed method or configuration or transmission state of configuration signaling. According to the method and the device for terminal determining to maintain opening of a phase-locked loop in the embodiment of the present invention, when the terminal determines whether to maintain the opening of the phase-locked loop, the pre-agreed method or the configurationor transmission state of the configuration signaling is taken into consideration, so whether the phase-locked loop is opened can be determined accurately, so as to ensure the phase continuity betweendata transmission and the DMRS corresponding thereto, thereby ensuring that the DMRS can be applied to data demodulation.

Description

technical field [0001] The present invention relates to the field of pilot frequency technology, in particular to a method and device for a terminal to determine to keep a phase-locked loop open. Background technique [0002] With the development and change of mobile communication service requirements, many organizations such as the International Telecommunication Union (ITU) have defined higher user plane delay performance requirements for future mobile communication systems. One of the main methods to shorten the user delay performance is to reduce the length of the transmission time interval (Transmission Time Interval, TTI), so a short TTI (sTTI) transmission scheme is proposed. In this transmission scheme, a subframe can be divided into multiple sTTIs, for example, when the length of sTTI is 2 symbols or 3 symbols, it can be as follows Figure 1A The method shown divides a subframe into 6 sTTIs, represented by sTTI index 0-5, where the first sTTI and the last sTTI conta...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04W72/04
CPCH04L5/0044H04L5/0048H04W72/0446H04W72/23H04L5/00H04W72/04
Inventor 高雪娟潘学明
Owner DATANG MOBILE COMM EQUIP CO LTD
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