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Uplink detection signal triggering method, device and system

A technology for detecting signals and signaling, applied in the field of uplink channel detection, can solve problems such as large signaling overhead, and achieve the effect of meeting the needs of flexible configuration and saving signaling overhead.

Active Publication Date: 2017-05-24
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Embodiments of the present invention provide a method, device and system for uplink channel detection, so as to at least solve the problem of large signaling overhead in the existing aperiodic SRS transmission

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  • Uplink detection signal triggering method, device and system
  • Uplink detection signal triggering method, device and system
  • Uplink detection signal triggering method, device and system

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Embodiment Construction

[0160] In order to make the description of the following embodiments clear and concise, a brief introduction of related technologies is first given:

[0161] As mentioned in the background technology, in the existing LTE protocol, the UE sends SRS based on two trigger mechanisms of trigger type 0 and trigger type 1. Trigger type 0 corresponds to periodic SRS transmission, which is triggered by RRC signaling; trigger type 1 corresponds to non- Periodic SRS transmission is triggered by the DCI of PDCCH or EPDCCH. Among them, DCI format 0 / 4 / 1A is used for frequency division duplex (English full name: frequencydivision dual, English abbreviation: FDD) and time division duplex (English full name: time division dual , English abbreviation: TDD), DCI format 2B / 2C / 2D is only used for TDD.

[0162] In the prior art, for aperiodic SRS transmission, one DCI triggers one UE to send an SRS. Table 1 is the trigger type 1DCI format 4SRS request type table.

[0163] Table I

[0164] ...

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Abstract

An embodiment of the invention provides an uplink detection signal triggering method, a device and a system, so as to at least solve the problem of large signaling overhead in the existing non-periodic SRS transmission and the problem of inflexible configuration in periodic SRS transmission. The uplink detection signal triggering method comprises the step that a base station transmits downlink control information (DCI) through a physical downlink control channel, wherein the DCI comprises sounding reference signal (SRS) control information corresponding respectively to each of the "a" number of UEs in a base station managed cell, and the number "a" is a positive integer not less than 2. The uplink detection signal triggering method, the device and the system are applicable in the field of wireless communication.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method, device and system for uplink channel detection. Background technique [0002] In the uplink of the wireless communication system, due to the frequency selective fading characteristic of the wireless channel, the base station (English full name: base station, English abbreviation: BS) needs to schedule user equipment (English full name: user equipment, English abbreviation: UE ), so that it can perform data transmission in the frequency band with better channel quality, so as to obtain frequency selective gain to ensure uplink performance. [0003] Specifically, the base station configures the UE to send a sounding reference signal (English full name: sounding reference signal, English abbreviation: SRS) to perform uplink channel quality estimation, and then, the base station then uses the detected channel state information (English full name: channel state ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00
CPCH04L5/0048H04L5/0091H04L5/0037H04L5/0051H04L5/0053H04W72/21H04W72/23H04W76/27
Inventor 窦圣跃李元杰
Owner HUAWEI TECH CO LTD