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Reference signal transmission method and communication device

A transmission method and a reference signal technology, applied in transmission path sub-channel allocation, transmission system, wireless communication, etc., can solve problems such as portability and resource waste, and achieve the effect of reducing resource overhead

Pending Publication Date: 2021-03-26
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there is no data scheduling requirement on slot 3, the network device cannot carry a trigger indication in the DCI of the scheduling data to trigger the terminal device to send SRS, and may need to send additional DCI specifically to trigger SRS, resulting in waste of resources

Method used

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  • Reference signal transmission method and communication device
  • Reference signal transmission method and communication device
  • Reference signal transmission method and communication device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0330] Embodiment 1, the K time domain resources preceding the first time domain resource occupied by the RS in a special time unit do not include time domain resources for downlink transmission, and K is greater than or equal to zero.

[0331] That is to say, the embodiment of the present application may determine whether a special time unit is a valid time unit for uplink transmission according to the uplink and downlink characteristics of the K time domain resources before the first time domain resource occupied by the RS.

[0332] Wherein, the first time domain resource occupied by the RS may also be referred to as a starting time domain resource or starting position of the RS. For example, the first symbol, or start symbol, or start symbol position occupied by the RS.

[0333] Specifically, if the K time domain resources before the first time domain resource of the RS in the special time unit do not include time domain resources for downlink transmission, the special time...

Embodiment approach 2

[0342] Embodiment 2, the time domain resource occupied by RS in a special time unit is located between time domain resource L+1 and time domain resource L+N, where N is greater than or equal to 0; time domain resource L is the set of control resources where the third information is located The last time domain resource of CORESET; the third information is used to indicate the time unit format.

[0343] That is to say, if the time domain resource occupied by RS in a special time unit is located between time domain resource L+1 and time domain resource L+N (the time domain resource occupied by RS can be between time domain resource L+1 and time domain resource Within L+N, or the time domain resource occupied by RS can be time domain resource L+1 to time domain resource L+N), then the special time unit is a valid time unit for uplink transmission, otherwise, the special time unit is invalid The time unit of the (or unavailable) uplink transmission.

[0344] Wherein, the third in...

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PUM

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Abstract

The invention provides a reference signal transmission method and a communication device. In the reference signal transmission method, a second time unit is a time unit indicated by a time sequence offset indication n in an effective uplink transmission time unit or an effective downlink transmission time unit starting from a first time unit. the first time unit is used for receiving first information, and the first information is used for triggering the terminal device to send a reference signal; the second time unit is used for the terminal device to send reference signals. Compared with themode that the time sequence offset indication n indicates the time sequence offset between the first time unit and the second time unit, the embodiment is favorable for improving the selection flexibility of the first time unit and saving the bit number required by the time sequence offset indication n.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a reference signal transmission method and a communication device. Background technique [0002] In the communication system, the channel state information of the channel can be obtained through the reference signal, and the network device can select a more appropriate modulation and coding method and precoding information based on the channel state information. For example, a network device may obtain channel state information by receiving a sounding reference signal (sounding reference signal, SRS) sent by a terminal. Wherein, the SRS may be an aperiodic reference signal. The network device will configure an SRS resource set for the terminal device; when the network device triggers SRS through downlink control information (DCI), the terminal can base on the value X of the timing offset (slotoffset) in the SRS resource set, in this The SRS is sent at a t...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04W28/02H04W28/06
CPCH04L5/0048H04L5/0078H04W28/0289H04W28/06
Inventor 位祎李雪茹曲秉玉张荻龚名新
Owner HUAWEI TECH CO LTD