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Uplink sounding signal triggering method, apparatus and system

A technology for sounding signals and sounding reference signals, applied in transmission systems, pilot signal allocation, digital transmission systems, etc., can solve the problem of high signaling overhead, meet the needs of flexible configuration, and save signaling overhead.

Active Publication Date: 2018-11-30
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 sounding signal triggering method, apparatus and system
  • Uplink sounding signal triggering method, apparatus and system
  • Uplink sounding signal triggering method, apparatus 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: frequency division 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

Embodiments of the invention provide an uplink channel sounding method, apparatus and system, so as to at least solve the problems that a signaling overhead in an existing aperiodic SRS transmission is considerable, and a configuration in a periodic SRS transmission is not flexible. The method comprises: sending downlink control information DCI by a base station through a physical downlink controlchannel, wherein the DCI comprises sounding reference signal SRS control information corresponding to each of a pieces of UE in a cell managed by the base station, and a is a positive integer which is not less than 2. The uplink channel sounding method, the uplink channel sounding apparatus and the uplink channel sounding system are suitable for the field of wireless communications.

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: userequipment, English abbreviation: UE) , so that it performs data transmission in a frequency band with better channel quality, so as to obtain frequency selective gain and 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 infor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04W72/04
CPCH04L5/0048H04L5/0091H04L5/0037H04L5/0051H04L5/0053H04W72/21H04W72/23H04W76/27
Inventor 窦圣跃李元杰
Owner HUAWEI TECH CO LTD