CN109196901B

CN109196901B - Method and device for sending and receiving uplink reference signal

Info

Publication number: CN109196901B
Application number: CN201680086000.5A
Authority: CN
Inventors: 张永平; ***
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2016-06-06
Filing date: 2016-06-06
Publication date: 2021-05-07
Anticipated expiration: 2036-06-06
Also published as: CN109196901A; WO2017210845A1

Abstract

The embodiment of the invention provides a method and a device for sending and receiving an uplink reference signal, wherein the method comprises the following steps: the UE receives a first trigger signaling sent by the base station, and sends a plurality of uplink reference signals on reference signal resources configured by the base station, wherein the reference signal resources are N symbols. Therefore, the receiving rate of the uplink reference signal can be improved, the transmission of the uplink reference signal of the non-periodic trigger multi-beam can be realized, and the robustness of the uplink measurement process is improved.

Description

Method and device for sending and receiving uplink reference signal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting and receiving an uplink reference signal.

Background

In the current development of wireless local area network technology, the frequency band of 6GHz is taken as a boundary, and high frequency communication is recognized as one of important technologies of the fifth generation mobile communication technology (hereinafter referred to as "5G"). The uplink reference signal is a signal predicted by a group of User Equipment (UE) and a base station, the base station performs channel estimation according to the uplink reference signal sent by the UE to obtain corresponding uplink channel quality, and performs uplink scheduling according to the uplink channel quality, where the uplink reference signal is very important for a high-frequency communication system.

In the existing 3GPP LTE system, an uplink reference signal is called a Sounding Reference Signal (SRS), a resource for transmitting the SRS is located in a last symbol of each subframe in a time domain, and a subframe is composed of 14 symbols or 12 symbols. The SRS is transmitted in two ways: periodic transmission and aperiodic transmission. During periodic transmission, the UE transmits the SRS in the frequency band range notified by the base station through downlink signaling, using the last symbol of the subframe at regular time intervals (e.g., 2 ms, that is, 2 subframes). During aperiodic transmission, a base station allocates resources for SRS transmission to all UEs through a high-level signaling, the resources for the aperiodic SRS transmission are also on the last symbol of a subframe, the base station dynamically triggers the UEs to transmit the SRS on the allocated resources through a downlink physical layer signaling, and after the UEs receive a first triggering signaling, the UEs transmit an SRS signal once on the nearest resource which can be used for transmitting the SRS.

In the high frequency system, if SRS transmission is performed in the conventional manner, the corresponding frequency band is scanned only once, regardless of periodic transmission or aperiodic transmission. The existing SRS signal transmission mode is matched with a beam forming method, so that the existing SRS signal transmission mode is extremely sensitive to the rotation and displacement of UE (user equipment), and the failure of receiving SRS by a base station is easily caused.

Disclosure of Invention

The embodiment of the invention provides a method and a device for sending and receiving an uplink reference signal, which aim to solve the problem of optimizing the sending and receiving of the uplink reference signal.

In a first aspect, an embodiment of the present invention provides an uplink reference signal sending method, including:

the UE receives a first trigger signaling sent by a base station, wherein the first trigger signaling is used for indicating the UE to send a plurality of uplink reference signals, the UE sends the plurality of uplink reference signals on a reference signal resource configured by the base station, the reference signal resource is N symbols, and N is greater than or equal to 1. The base station receives the uplink reference signal sent by the UE on the corresponding reference signal resource, so that the receiving rate of the uplink reference signal can be improved, the sending of the uplink reference signal of non-periodically triggered multi-beam can be realized, and the robustness of the uplink measurement process is improved.

In a possible design, when the plurality of uplink reference signals are uplink reference signals in different beam directions, the method further includes:

the UE receives an index value of a symbol where a first uplink reference signal sent by the base station is located, determines a first beam direction according to the index value, and continues to send a next uplink reference signal by using the first beam direction, wherein the first uplink reference signal is an uplink reference signal with the optimal receiving quality received by the base station; or, the UE receives a second trigger signaling sent by the base station, where the second trigger signaling is used to instruct the UE to continue sending the multiple uplink reference signals. Therefore, the base station can be ensured to receive the uplink reference signal with higher signal-to-noise ratio all the time in a subsequent period of time, and the uplink channel can be better measured.

In one possible design, as an embodiment of configuring the reference signal resource by the base station, the method further includes:

and the UE receives the reference signal resource configured by the base station.

In one possible design, the reference signal resource includes at least one of the number of symbols N and a transmission bandwidth of the reference signal, a frequency domain starting frequency, a comb, and a time domain period of the subframe position occupied by the reference signal resource.

In one possible design, the subframe locations occupied by the reference signal resources in different periods are the same.

In one possible design, the first trigger signaling further includes a number M of uplink reference signals sent by the UE, where M is greater than or equal to 1.

In a possible design, as another embodiment of configuring the reference signal resource by the base station, the first trigger signaling includes the reference signal resource configured by the base station, and the reference signal resource includes at least a symbol number N.

In one possible design, the reference signal resource further includes at least one of a transmission bandwidth of the reference signal, a frequency domain starting frequency, a bandwidth of the frequency sweep, a comb, and a time domain period of the subframe location occupied by the reference signal resource.

In one possible design, the first trigger signaling further includes:

and the information bits are used for indicating the number N of the symbols of the reference signal resources, the number of the subframes of the reference signal resource distribution and the positions of the symbols in the subframes of the reference signal resource distribution.

In one possible design, further comprising:

and the UE receives a notification message which is broadcasted by the base station and inhibits the uplink data from being sent on the reference signal resource. Signal interference can be avoided.

In a second aspect, an embodiment of the present invention provides an uplink reference signal receiving method, including:

the base station sends a first trigger signaling to the UE so that the UE sends a plurality of uplink reference signals on reference signal resources configured by the base station after receiving the first trigger signaling, the base station receives the uplink reference signals sent by the UE on the corresponding reference signal resources, the reference signal resources are N symbols, and N is greater than or equal to 1. Therefore, the receiving rate of the uplink reference signal can be improved, the transmission of the uplink reference signal of the non-periodic trigger multi-beam can be realized, and the robustness of the uplink measurement process is improved.

the base station determines a first uplink reference signal, wherein the first uplink reference signal is an uplink reference signal with the optimal receiving quality in all uplink reference signals received by the base station, and the base station sends an index value of a symbol where the first uplink reference signal is located to the UE, so that the UE determines a first beam direction according to the index value and continues to send a next uplink reference signal by using the first beam direction; or the base station sends a second trigger signaling to the UE, so that the UE continues to send the plurality of uplink reference signals after receiving the second trigger signaling. Therefore, the base station can be ensured to receive the uplink reference signal with higher signal-to-noise ratio all the time in a subsequent period of time, and the uplink channel can be better measured.

the base station transmits reference signal resources to the UE.

In one possible design, the subframe locations occupied by the reference signal resources are the same.

In one possible design, the base station does not schedule all UEs served by the base station to transmit uplink data on the configured reference signal resource, so that signal interference can be avoided.

In one possible design, the first trigger signaling includes:

In one possible design, further comprising:

and the base station broadcasts a notification message for prohibiting sending uplink data on the reference signal resource to all the UE served by the base station. Signal interference can be avoided.

In a third aspect, an embodiment of the present invention provides a user equipment, including:

the base station comprises a receiving module and a sending module, wherein the receiving module is used for receiving a first trigger signaling sent by the base station, the first trigger signaling is used for indicating the UE to send a plurality of uplink reference signals, the sending module is used for sending the plurality of uplink reference signals on a reference signal resource configured by the base station, the reference signal resource is N symbols, and N is greater than or equal to 1. Therefore, the receiving rate of the uplink reference signal can be improved, the transmission of the uplink reference signal of the non-periodic trigger multi-beam can be realized, and the robustness of the uplink measurement process is improved.

In a possible design, when the plurality of uplink reference signals are uplink reference signals in different beam directions, the receiving module is further configured to receive an index value of a symbol where a first uplink reference signal sent by the base station is located, and determine the first beam direction according to the index value, the sending module is further configured to continue sending a next uplink reference signal in the first beam direction, where the first uplink reference signal is an uplink reference signal received by the base station with the optimal receiving quality; or, the receiving module is further configured to receive a second trigger signaling sent by the base station, where the second trigger signaling is used to instruct the UE to continue sending the multiple uplink reference signals. Therefore, the base station can be ensured to receive the uplink reference signal with higher signal-to-noise ratio all the time in a subsequent period of time, and the uplink channel can be better measured.

In one possible design, as an embodiment of configuring the reference signal resource by the base station, the receiving module is further configured to:

and receiving the reference signal resource configured by the base station.

In one possible design, the first trigger signaling further includes:

In one possible design, the receiving module is further configured to:

and receiving a notification message which is broadcasted by the base station and forbids sending uplink data on the reference signal resource, so that signal interference can be avoided.

In a fourth aspect, an embodiment of the present invention provides a base station, including:

the base station comprises a sending module used for sending a first trigger signaling to the UE so that the UE sends a plurality of uplink reference signals on reference signal resources configured by the base station after receiving the first trigger signaling, and a receiving module used for receiving the uplink reference signals sent by the UE on the corresponding reference signal resources, wherein the reference signal resources are N symbols, and N is more than or equal to 1. Therefore, the receiving rate of the uplink reference signal can be improved, the transmission of the uplink reference signal of the non-periodic trigger multi-beam can be realized, and the robustness of the uplink measurement process is improved.

the processing module is used for determining a first uplink reference signal, wherein the first uplink reference signal is an uplink reference signal with the optimal receiving quality in all uplink reference signals received by the base station, and the sending module is also used for sending an index value of a symbol where the first uplink reference signal is located to the UE, so that the UE determines a first beam direction according to the index value and continues to send a next uplink reference signal by using the first beam direction; or sending a second trigger signaling to the UE, so that the UE continues to send the multiple uplink reference signals after receiving the second trigger signaling. Therefore, the base station can be ensured to receive the uplink reference signal with higher signal-to-noise ratio all the time in a subsequent period of time, and the uplink channel can be better measured.

In one possible design, as an embodiment of configuring the reference signal resource by the base station, the sending module is further configured to:

and transmitting the reference signal resource to the UE.

In one possible design, the first trigger signaling includes:

In one possible design, the sending module is further configured to:

and broadcasting a notification message for prohibiting sending uplink data on the reference signal resource to all the UE served by the base station, so that signal interference can be avoided.

In a fifth aspect, an embodiment of the present invention provides a user equipment, including:

the base station comprises a receiver and a transmitter, wherein the receiver is used for receiving a first trigger signaling sent by the base station, the first trigger signaling is used for indicating the UE to send a plurality of uplink reference signals, the transmitter is used for sending the plurality of uplink reference signals on a reference signal resource configured by the base station, the reference signal resource is N symbols, and N is greater than or equal to 1. Therefore, the receiving rate of the uplink reference signal can be improved, the transmission of the uplink reference signal of the non-periodic trigger multi-beam can be realized, and the robustness of the uplink measurement process is improved.

In a possible design, when the plurality of uplink reference signals are uplink reference signals in different beam directions, the receiver is further configured to receive an index value of a symbol where a first uplink reference signal sent by the base station is located, determine the first beam direction according to the index value, and the transmitter is further configured to continue sending a next uplink reference signal in the first beam direction, where the first uplink reference signal is an uplink reference signal received by the base station with the optimal reception quality; or, the receiver is further configured to receive a second trigger signaling sent by the base station, where the second trigger signaling is used to instruct the UE to continue sending the multiple uplink reference signals. Therefore, the base station can be ensured to receive the uplink reference signal with higher signal-to-noise ratio all the time in a subsequent period of time, and the uplink channel can be better measured.

In one possible design, as an embodiment of the base station configuring the reference signal resource, the receiver is further configured to:

and receiving the reference signal resource configured by the base station.

In one possible design, the first trigger signaling further includes:

In one possible design, the receiver is further configured to:

In a sixth aspect, an embodiment of the present invention provides a base station, including:

the base station comprises a transmitter and a receiver, wherein the transmitter is used for transmitting a first trigger signaling to the UE so that the UE transmits a plurality of uplink reference signals on reference signal resources configured by the base station after receiving the first trigger signaling, the receiver is used for receiving the uplink reference signals transmitted by the UE on the corresponding reference signal resources, the reference signal resources are N symbols, and N is greater than or equal to 1. Therefore, the receiving rate of the uplink reference signal can be improved, the transmission of the uplink reference signal of the non-periodic trigger multi-beam can be realized, and the robustness of the uplink measurement process is improved.

the processor is configured to determine a first uplink reference signal, where the first uplink reference signal is an uplink reference signal with the best reception quality among all uplink reference signals received by the base station, and the transmitter is further configured to transmit an index value of a symbol where the first uplink reference signal is located to the UE, so that the UE determines a first beam direction according to the index value, and continues to transmit a next uplink reference signal in the first beam direction; or sending a second trigger signaling to the UE, so that the UE continues to send the multiple uplink reference signals after receiving the second trigger signaling. Therefore, the base station can be ensured to receive the uplink reference signal with higher signal-to-noise ratio all the time in a subsequent period of time, and the uplink channel can be better measured.

In one possible design, as an embodiment of the base station configuring the reference signal resource, the transmitter is further configured to:

and transmitting the reference signal resource to the UE.

In one possible design, the first trigger signaling includes:

In one possible design, the transmitter is further configured to:

The method and the device for sending and receiving the uplink reference signals send the trigger signaling to the UE through the base station, the UE sends a plurality of uplink reference signals on the reference signal resources configured by the base station according to the received trigger signaling, the reference signal resources configured by the base station are N symbols, N is larger than or equal to 1, and the base station receives the uplink reference signals sent by the UE on the corresponding reference signal resources, so that the receiving rate of the uplink reference signals can be improved, the sending of the uplink reference signals of non-periodically triggered multi-beams can be realized, and the robustness of an uplink measurement process is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a flowchart illustrating a first method for transmitting and receiving an uplink reference signal according to an embodiment of the present invention;

fig. 2 is a schematic interaction flow diagram of a second method for sending an uplink reference signal according to an embodiment of the present invention;

fig. 3 is a schematic diagram illustrating that the numbers of symbols of reference signal resources in different time domain periods are the same in a second embodiment of the uplink reference signal sending method according to the present invention;

fig. 4 is a schematic diagram illustrating different numbers of symbols of reference signal resources in different time domain periods according to a second embodiment of an uplink reference signal sending method according to the present invention;

FIG. 5 is a diagram illustrating distribution of reference signal resources;

fig. 6 is a schematic interaction flow diagram of a third method for sending an uplink reference signal according to the present invention;

fig. 7 is a schematic diagram of a triggering, transmitting and beam direction updating process of a multi-beam uplink reference signal in a third embodiment of the uplink reference signal transmitting method according to the present invention;

FIG. 8 is a schematic structural diagram of a UE according to a first embodiment of the present invention;

fig. 9 is a schematic structural diagram of a base station according to a first embodiment of the present invention;

fig. 10 is a schematic structural diagram of a second base station according to the embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a UE according to a second embodiment of the present invention;

fig. 12 is a schematic structural diagram of a base station according to a third embodiment of the present invention;

fig. 13 is a schematic structural diagram of a base station according to a fourth embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical solution of the embodiment of the present invention can be applied to various communication systems of a wireless cellular network, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS) System, an LTE System, a Universal Mobile Telecommunications System (UMTS), etc., which are not limited in the embodiments of the present invention.

The technical scheme of the embodiment of the invention is mainly applied to a high-frequency communication system, and the network elements involved in the high-frequency communication system applied in the embodiment of the invention are a base station (also called access network equipment) and UE (user equipment), and mainly relate to a transmitter and a receiver which are configured with multiple antennas.

When a beamforming method is adopted in a high-frequency communication system to ensure that a base station can receive an uplink reference signal with a higher signal-to-noise ratio, if the base station fails to receive an SRS according to the existing SRS signal transmission mode, the specific reasons are as follows: due to the severe transmission loss of the high-frequency signal in the transmission process, when the base station receives the SRS, the receiving signal-to-noise ratio is very low, even lower than the threshold of the receiver, and the receiving fails. In a high-frequency communication system, a large number of antennas are often disposed at both ends of the transceiver, and a power gain is obtained by beamforming (beamforming) at both ends of the transceiver to counter transmission loss. Similarly, in order to ensure that the base station can receive the uplink reference signal with a higher signal-to-noise ratio, the UE also uses a beamforming method to transmit the reference signal on a beam with a small width, so as to improve the signal energy density. Therefore, in order to improve SRS reception performance, the most direct method is: the UE adopts a beam forming manner to transmit the SRS on a beam with a small width when sending the SRS, but since the current SRS can only measure the frequency band resource once at a time, that is, only one beam direction SRS can be sent at a time, when the UE rotates or has a large displacement, that is, the best beam forming direction of the SRS sent by the UE changes, the SRS reception performance will be impaired, and especially when the zero line direction is aligned to the base station after the rotation, the base station will not receive any SRS signal from the UE at all.

The method and the device for sending and receiving the uplink reference signal are used for solving the problems. When the base station determines that the preset trigger condition is met, for example, the base station does not receive the uplink reference signal sent by the UE on the specific resource, or the reception quality of the uplink reference signal received by the base station is smaller than a preset threshold, the base station sends a trigger signaling to the UE, the UE sends a plurality of uplink reference signals on the reference signal resource configured by the base station according to the received trigger signaling, and the base station receives the uplink reference signal sent by the UE on the corresponding reference signal resource, so that the reception rate of the uplink reference signal can be improved, the transmission of the uplink reference signal of the aperiodic trigger multi-beam can be realized, and the robustness of the uplink measurement process can be improved. The technical scheme provided by the embodiment of the invention is described in detail below with reference to the accompanying drawings.

Fig. 1 is a flowchart illustrating a first embodiment of a method for sending and receiving an uplink reference signal according to the present invention, as shown in fig. 1, the method includes:

s101, a base station sends a first trigger signaling to UE, wherein the first trigger signaling is used for indicating the UE to send uplink reference signals in a plurality of different beam directions.

Specifically, when it is determined that a preset trigger condition is met, the base station sends a first trigger signaling to the UE, where the trigger condition is that the base station does not receive an uplink reference signal sent by the UE on a specific resource, where the specific resource may be a latest time-frequency resource used for transmitting the uplink reference signal, or a reception quality of the uplink reference signal received by the base station is less than a preset threshold, and the like, the base station sends the first trigger signaling to the UE to trigger the UE to send a plurality of uplink reference signals. The first trigger signaling may be downlink signaling. The plurality of uplink reference signals transmitted by the UE may be in the same beam direction, or in different beam directions, or for example, 2 of the 5 uplink reference signals are the same, and the other 3 are the same, so that, relatively, when the UE transmits the plurality of uplink reference signals in different beam directions, the base station receives the uplink reference signal transmitted by the UE more easily, and the reception rate is higher.

S102, after receiving the first trigger signaling, the UE sends a plurality of uplink reference signals on the reference signal resources configured by the base station.

The reference signal resource configured by the base station is N symbols, and N is greater than or equal to 1. The N symbols used as the reference signal resources may be consecutive N symbols within one subframe, N symbols spaced within one subframe, or N symbols located within a plurality of subframes. And the number of the uplink reference signals sent by the UE is less than or equal to N.

S103, the base station receives a plurality of uplink reference signals sent by the UE on corresponding reference signal resources.

Further, when the multiple uplink reference signals are uplink reference signals in different beam directions, after the UE transmits the multiple uplink reference signals on the reference signal resource configured by the base station in S102, the method may further include:

the base station determines a first uplink reference signal, wherein the first uplink reference signal is an uplink reference signal with the optimal receiving quality in all uplink reference signals received by the base station, and then the base station sends an index value of a symbol where the first uplink reference signal is located to the UE. And the UE determines a first beam direction according to the index value and continues to transmit the next uplink reference signal by using the first beam direction. Specifically, after receiving a plurality of uplink reference signals sent by the UE, the base station determines an uplink reference signal with the best reception quality, or may be the uplink reference signal with the highest received signal strength, where the reception quality of the uplink reference signal is the best, and then the base station sends an index value of a symbol where the uplink reference signal is located to the UE, so that the UE can know a beam direction on the symbol corresponding to the index value, the base station has better reception quality for the uplink reference signal in the beam direction, and the UE sends the uplink reference signal in the best beam direction when sending subsequent uplink data and uplink reference signals. Therefore, the base station can be ensured to receive the uplink reference signal with higher signal-to-noise ratio all the time in a subsequent period of time, and the uplink channel can be better measured.

Or, the base station sends a second trigger signaling to the UE, and the UE continues to send the multiple uplink reference signals after receiving the second trigger signaling. Specifically, after receiving the multiple uplink reference signals sent by the UE, the base station, according to the reception quality of all the uplink reference signals, if it is determined that the preset re-triggering condition is met, if the reception quality of all the uplink reference signals is lower than a preset threshold, continues to send the trigger signaling to the UE, and the UE continues to send the multiple uplink reference signals on the reference signal resource until the reception quality of the largest uplink reference signal among all the uplink reference signals is greater than the preset threshold. This is also applicable to the case where a plurality of uplink reference signals are uplink reference signals in the same beam direction.

In the above embodiments, there are two possible ways for the base station to configure the reference signal resource, which will be described in detail below.

As a practical manner, before the base station sends the first trigger signaling to the UE, the base station sends the reference signal resource to the UE. Specifically, the base station may send, through downlink signaling, a reference signal resource configured for the UE, where the reference signal resource includes at least one of the number of symbols N and a transmission bandwidth of a reference signal, a frequency domain starting frequency, a comb, and a time domain period of a subframe position occupied by the reference signal resource. The time domain period of the subframe position occupied by the reference signal resource herein refers to a period of the subframe position occupied by the reference signal resource, the subframe position occupied by the reference signal resource of each period is the same, the number of symbols of the reference signal resource in different periods is the same or different, for example, the reference signal resource of each period is on the last N symbols of the subframe (this is the same situation), for example, the period of the subframe position occupied by the reference signal resource configured to the UE1 by the base station is 3, and the number of symbols of the reference signal resource in different periods is 3, that is, for the UE1, the subframe occupied by the reference signal resource is the third subframe, the sixth subframe, the ninth subframe.

Further, the first trigger signaling further includes a number M of uplink reference signals indicating that the UE transmits signals in different beam directions, where M is greater than or equal to 1. Of course, M is less than or equal to the number of symbols N of the reference signal resource.

In this embodiment, the base station does not schedule all UEs served by the base station to transmit uplink data on the configured reference signal resource, so that signal interference can be avoided.

As another implementable manner, the base station sends the reference signal resource to the UE while sending the first trigger signaling to the UE, specifically, the first trigger signaling includes the reference signal resource configured by the base station, and the reference signal resource includes at least a symbol number N. Further, the reference signal resource further includes at least one of a transmission bandwidth of the reference signal, a frequency domain starting point frequency, a bandwidth of the frequency sweep, a comb, and a time domain period of the subframe position occupied by the reference signal resource.

The first trigger signaling may further include: and the information bits are used for indicating the number N of the symbols of the reference signal resources, the number of the subframes of the reference signal resource distribution and the positions of the symbols in the subframes of the reference signal resource distribution. For example, the information may be distributed in one subframe or distributed in multiple subframes, and the like, all the information may be numbered, an example is given in the following table one, in which the UE may transmit uplink reference signals in 8 different directions at most, a coding table of 3-bit information is given in the following table one, which is only an embodiment and does not limit the protection scope of the embodiment of the present invention.

Watch-trigger signaling

Signaling bits	Number of directions	Distributed/centralized type	Number of distributed sub-frames
				000	8	Centralized type	1
001	8	Distributed type	2
				010	8	Distributed type	4
011	4	Centralized type	1
				100	4	Distributed type	2
101	4	Distributed type	4
				110	2	Centralized type	1
111	2	Distributed type	2

Reference signal resources are configured in an information bit mode, and the UE is triggered to send uplink reference signals in a plurality of different beam directions, so that signaling overhead can be effectively reduced.

In this embodiment, the method further includes: the base station broadcasts a notification message for prohibiting sending uplink data on the reference signal resource to all the UE served by the base station, so that signal interference can be avoided.

In the uplink reference signal sending and receiving method provided by this embodiment, when it is determined that the preset trigger condition is met, the base station sends a trigger signaling to the UE, the UE sends a plurality of uplink reference signals in different beam directions on a reference signal resource configured by the base station according to the received trigger signaling, the reference signal resource configured by the base station is N symbols, N is greater than or equal to 1, and the base station receives the uplink reference signal sent by the UE on the corresponding reference signal resource, so that the receiving rate of the uplink reference signal can be increased, the sending of the uplink reference signal of non-periodically triggered multi-beams can be realized, and the robustness of the uplink measurement process is increased.

The technical solution of the embodiment of the method shown in fig. 1 is described in detail below using two specific embodiments.

Fig. 2 is a schematic view of an interaction flow of a second embodiment of an uplink reference signal transmission method according to the present invention, where the implementation takes as an example that a base station pre-configures reference signal resources for a UE to transmit uplink reference signals in multiple different beam directions, as shown in fig. 2, the method includes:

s201, the base station sends downlink signaling carrying reference signal resources to the UE. The reference signal resource comprises the number N of symbols, wherein N is more than or equal to 1, the transmission bandwidth of the reference signal, the frequency domain starting point frequency, the comb teeth and the time domain period of the subframe position occupied by the reference signal resource.

Specifically, no matter the uplink reference signal is in a periodic transmission mode or an aperiodic transmission mode, the positions of the subframes occupied by the reference signal resources of each time domain period are the same, and the numbers of symbols of the reference signal resources in different time domain periods are the same or different, fig. 3 is a schematic diagram illustrating that the numbers of symbols of the reference signal resources in different time domain periods are the same in the uplink reference signal transmission method according to the second embodiment of the present invention, as shown in fig. 3, the numbers of symbols of the reference signal resources in the period M and the period M +1 are the same, and are 4, and the positions of the occupied subframes are the same, and are all on the last four symbols of the subframe. Fig. 4 is a schematic diagram illustrating that the number of symbols of the reference signal resource in different time domain periods is different in the uplink reference signal sending method according to the second embodiment of the present invention, as shown in fig. 4, the number of symbols of the reference signal resource in the period M is 2, on the last 2 symbols of the subframe, the number of symbols of the reference signal resource in the period M +1 is 4, and on the last 4 symbols of the subframe. Fig. 3 and 4 show that the reference signal resource is a plurality of continuous symbols, optionally, the reference signal resource in a time domain period may also be a plurality of discontinuous symbols, or may also be distributed in a plurality of subframes, fig. 5 is a schematic diagram of the distribution of the reference signal resource, fig. 5(a) shows that the reference signal resource is a plurality of continuous symbols in a subframe, fig. 5(b) shows that the reference signal resource is a plurality of discontinuous symbols in a subframe, and fig. 5(c) shows that the reference signal resource is a plurality of discrete symbols in a plurality of subframes.

On the configured reference signal transmission resource, the base station does not schedule all UEs served by the base station to send uplink data on the configured reference signal resource, so that signal interference can be avoided.

S202, the base station sends a trigger signaling to the UE, and the trigger signaling is used for indicating the UE to send uplink reference signals in a plurality of different beam directions.

Specifically, the base station sends a trigger signaling to the UE when determining that a preset trigger condition is met, where the trigger signaling may include a trigger type indication, such as a bit indication, for instructing the UE to send uplink reference signals in multiple different beam directions, and may specifically include an uplink reference signal for specifically triggering M beam directions, where M is less than or equal to N.

S203, after receiving the trigger signaling, the UE sends a plurality of uplink reference signals in different beam directions on the reference signal resource configured by the base station.

Regardless of whether the uplink reference signal is in a periodic transmission mode or an aperiodic transmission mode, as long as the UE receives a trigger signaling transmitted by the base station, the UE transmits a plurality of uplink reference signals on the nearest reference signal resource which can be used for transmitting reference signals in a plurality of different beam directions according to the reference signal resource pre-configured by the base station.

S204, the base station receives a plurality of uplink reference signals sent by the UE on corresponding reference signal resources. And performing channel measurement, determining an uplink reference signal with the optimal receiving quality in all uplink reference signals received by the base station, when the receiving quality of the uplink reference signal is less than a preset threshold, continuing to send a trigger signaling to the UE, and the UE continuing to send a plurality of uplink reference signals in different beam directions on a reference signal resource until the receiving quality of the optimal uplink reference signal in all uplink reference signals is greater than the preset threshold.

S205, when the reception quality of the uplink reference signal is greater than the preset threshold, sending an index value of a symbol where the uplink reference signal is located to the UE, where the index value may also be an identifier.

S206, the UE receives the index value sent by the base station, determines the beam direction on the symbol corresponding to the index value according to the index value, and the UE adopts the beam direction to send when sending the subsequent uplink data and uplink reference signals.

Fig. 6 is a schematic view of an interaction flow of a third embodiment of an uplink reference signal transmission method according to the present invention, where the implementation takes reference signal resources of uplink reference signals in a plurality of different beam directions simultaneously transmitted to a UE by a base station when sending a trigger signaling as an example, as shown in fig. 6, the method includes:

s301, the base station sends a trigger signaling to the UE, and the trigger signaling is used for indicating the UE to send uplink reference signals in a plurality of different beam directions.

The trigger signaling comprises reference signal resources configured by the base station, wherein the reference signal resources comprise at least a symbol number N, and the reference signal resources further comprise the emission bandwidth of the reference signal, the frequency domain starting point frequency, the frequency sweeping bandwidth, comb teeth and a time domain period of the subframe positions occupied by the reference signal resources. Or, the triggering signaling includes: and the information bits are used for indicating the number N of the symbols of the reference signal resources, the number of the subframes of the reference signal resource distribution and the positions of the symbols in the subframes of the reference signal resource distribution. E.g. centrally in one sub-frame or in a plurality of sub-frames etc.

Fig. 7 is a schematic diagram of a triggering, transmitting and beam direction updating process of a multi-beam uplink reference signal in a third embodiment of the uplink reference signal transmitting method according to the present invention, taking an SRS as an example, and referring to fig. 7, in an SRS periodic transmission mode or an aperiodic transmission mode, an SRS beam direction transmitted by a UE before triggering is shown as "a" in fig. 7, the UE receives a trigger signaling in a subframe n, and a reference signal resource indicated in the trigger signaling is the last 4 symbols of the subframe n + 1.

S302, the base station broadcasts a notification message for prohibiting sending the uplink data on the reference signal resource indicated in the trigger signaling to all the UEs served by the base station.

S303, after receiving the trigger signaling, the UE sends a plurality of uplink reference signals in different beam directions on the reference signal resource indicated in the trigger signaling.

Regardless of whether the uplink reference signal is in a periodic transmission mode or an aperiodic transmission mode, as long as the UE receives the trigger signaling transmitted by the base station, the UE transmits a plurality of uplink reference signals on the nearest reference signal resource which can be used for transmitting reference signals in a plurality of different beam directions according to the reference signal resource indicated in the trigger signaling. Referring to fig. 7, the UE transmits uplink reference signals in 4 different beam directions on the last 4 symbols of the subframe n +1, and fig. 7 shows that 1, 2, 3, and 4 are beam directions in which the UE transmits SRS on 4 symbols respectively.

S304, the base station receives a plurality of uplink reference signals sent by the UE on corresponding reference signal resources. And performing channel measurement, determining an uplink reference signal with the optimal receiving quality in all uplink reference signals received by the base station, when the receiving quality of the uplink reference signal is less than a preset threshold, continuing to send a trigger signaling to the UE, and the UE continuing to send a plurality of uplink reference signals in different beam directions on a reference signal resource until the receiving quality of the maximum uplink reference signal in all uplink reference signals is greater than the preset threshold.

S305, when the receiving quality of the uplink reference signal is greater than a preset threshold, sending an index value of a symbol where the uplink reference signal is located to the UE, where the index value may also be an identifier.

S306, the UE receives the index value sent by the base station, determines the beam direction on the symbol corresponding to the index value according to the index value, and the UE adopts the beam direction to send when sending the subsequent uplink data and uplink reference signals. Referring to fig. 7, the base station determines that a beam direction on a symbol corresponding to an index value of a symbol where an uplink reference signal with the best reception quality is located is 1 in all uplink reference signals, and the UE transmits the uplink reference signal in the beam direction 1 when transmitting subsequent uplink data and uplink reference signals. The beam direction shown in fig. 7 is updated from "a" to "1".

Fig. 8 is a schematic structural diagram of a UE according to a first embodiment of the present invention, and as shown in fig. 8, the UE according to this embodiment may include: the UE includes a receiving module 11 and a sending module 12, where the receiving module 11 is configured to receive a first trigger signaling sent by a base station, the first trigger signaling is used to instruct a UE to send multiple uplink reference signals, the sending module 12 is configured to send multiple uplink reference signals on a reference signal resource configured by the base station, the reference signal resource is N symbols, and N is greater than or equal to 1.

Further, the receiving module 11 is further configured to receive an index value of a symbol where a first uplink reference signal sent by the base station is located, and determine a first beam direction according to the index value, and the sending module 12 is further configured to continue sending a next uplink reference signal in the first beam direction, where the first uplink reference signal is an uplink reference signal received by the base station with the best receiving quality; or, the receiving module 11 is further configured to receive a second trigger signaling sent by the base station, where the second trigger signaling is used to instruct the UE to continue sending the multiple uplink reference signals. Therefore, the base station can be ensured to receive the uplink reference signal with higher signal-to-noise ratio all the time in a subsequent period of time, and the uplink channel can be better measured.

Further, as an embodiment of the base station configuring the reference signal resource, the receiving module 11 is further configured to: and receiving the reference signal resource configured by the base station.

The reference signal resource comprises at least one of the number N of symbols, the transmission bandwidth of the reference signal, the frequency domain starting point frequency, the comb teeth and the time domain period of the subframe position occupied by the reference signal resource. Wherein, the positions of the subframes occupied by the reference signal resources in different periods are the same.

Optionally, the first trigger signaling further includes a number M of uplink reference signals sent by the UE, where M is greater than or equal to 1.

As another embodiment of the reference signal resource configured by the base station, the first trigger signaling includes the reference signal resource configured by the base station, and the reference signal resource at least includes a symbol number N.

Further, the reference signal resource further includes at least one of a transmission bandwidth of the reference signal, a frequency domain starting point frequency, a bandwidth of the frequency sweep, a comb, and a time domain period of the subframe position occupied by the reference signal resource.

Optionally, the first trigger signaling further includes: and the information bits are used for indicating the number N of the symbols of the reference signal resources, the number of the subframes of the reference signal resource distribution and the positions of the symbols in the subframes of the reference signal resource distribution.

Optionally, the receiving module 11 is further configured to: and receiving a notification message which is broadcasted by the base station and forbids sending uplink data on the reference signal resource, so that signal interference can be avoided.

The UE of this embodiment may be configured to execute the technical solution of the method embodiment shown in fig. 1, and the implementation principle thereof is similar, which is not described herein again.

In the UE provided in this embodiment, the receiving module receives a first trigger signaling sent by the base station, where the first trigger signaling is used to instruct the UE to send multiple uplink reference signals, and the sending module sends the multiple uplink reference signals on a reference signal resource configured by the base station, where the reference signal resource is N symbols, and N is greater than or equal to 1. Therefore, the receiving rate of the uplink reference signal can be improved, the transmission of the uplink reference signal of the non-periodic trigger multi-beam can be realized, and the robustness of the uplink measurement process is improved.

Fig. 9 is a schematic structural diagram of a base station according to a first embodiment of the present invention, and as shown in fig. 9, the base station according to this embodiment may include: the UE comprises a sending module 21 and a receiving module 22, wherein the sending module 21 is configured to send a first trigger signaling to the UE, so that the UE sends a plurality of uplink reference signals on reference signal resources configured by the base station after receiving the first trigger signaling, and the receiving module 22 is configured to receive the uplink reference signals sent by the UE on corresponding reference signal resources, where the reference signal resources are N symbols, and N is greater than or equal to 1.

The base station of this embodiment may be configured to execute the technical solution of the method embodiment shown in fig. 1, and the implementation principle thereof is similar, which is not described herein again.

In the base station provided in this embodiment, the sending module sends the first trigger signaling to the UE, so that the UE sends a plurality of uplink reference signals on the reference signal resources configured by the base station after receiving the first trigger signaling, and the receiving module receives the uplink reference signals sent by the UE on the corresponding reference signal resources, where the reference signal resources are N symbols, and N is greater than or equal to 1. Therefore, the receiving rate of the uplink reference signal can be improved, the transmission of the uplink reference signal of the non-periodic trigger multi-beam can be realized, and the robustness of the uplink measurement process is improved.

Fig. 10 is a schematic structural diagram of a second base station according to the present invention, and as shown in fig. 10, the apparatus of this embodiment may further include, on the basis of the apparatus structure shown in fig. 9: a processing module 23, where the processing module 23 is configured to determine a first uplink reference signal, where the first uplink reference signal is an uplink reference signal with the best reception quality among all uplink reference signals received by the base station, and the sending module 21 is further configured to send an index value of a symbol where the first uplink reference signal is located to the UE, so that the UE determines a first beam direction according to the index value, and continues to send a next uplink reference signal in the first beam direction; or sending a second trigger signaling to the UE, so that the UE continues to send the multiple uplink reference signals after receiving the second trigger signaling. Therefore, the base station can be ensured to receive the uplink reference signal with higher signal-to-noise ratio all the time in a subsequent period of time, and the uplink channel can be better measured.

The apparatus of this embodiment may be used to implement the technical solutions of the method embodiments shown in fig. 2 or fig. 6, and the implementation principles thereof are similar and will not be described herein again.

In the embodiment shown in fig. 9 or fig. 10, as an implementation manner of configuring the reference signal resource by the base station, the sending module 21 is further configured to: and transmitting the reference signal resource to the UE.

The reference signal resource comprises at least one of the number N of symbols, the transmission bandwidth of the reference signal, the frequency domain starting point frequency, the comb teeth and the time domain period of the subframe position occupied by the reference signal resource.

Optionally, the positions of the subframes occupied by the reference signal resources are the same, and the symbol numbers of the reference signal resources in different periods are the same or different.

Further, the base station does not schedule all UEs served by the base station to send uplink data on the configured reference signal resource, so that signal interference can be avoided.

Optionally, the first trigger signaling includes: and the information bits are used for indicating the number N of the symbols of the reference signal resources, the number of the subframes of the reference signal resource distribution and the positions of the symbols in the subframes of the reference signal resource distribution.

In the above embodiment, the sending module 21 is further configured to: and broadcasting a notification message for prohibiting sending uplink data on the reference signal resource to all the UE served by the base station, so that signal interference can be avoided.

Fig. 11 is a schematic structural diagram of a second embodiment of the UE of the present invention, and as shown in fig. 11, the UE of this embodiment may include: the receiver 31 is configured to receive a first trigger signaling sent by a base station, where the first trigger signaling is used to instruct a UE to send multiple uplink reference signals, and the transmitter 32 is configured to send multiple uplink reference signals on a reference signal resource configured by the base station, where the reference signal resource is N symbols, and N is greater than or equal to 1.

Further, the receiver 31 is further configured to receive an index value of a symbol where a first uplink reference signal sent by the base station is located, and determine a first beam direction according to the index value, and the transmitter 32 is further configured to continue sending a next uplink reference signal in the first beam direction, where the first uplink reference signal is an uplink reference signal received by the base station with the best reception quality; or, the receiver 31 is further configured to receive a second trigger signaling sent by the base station, where the second trigger signaling is used to instruct the UE to continue sending the multiple uplink reference signals. Therefore, the base station can be ensured to receive the uplink reference signal with higher signal-to-noise ratio all the time in a subsequent period of time, and the uplink channel can be better measured.

Further, as an embodiment of the base station configuring the reference signal resource, the receiver 31 is further configured to: and receiving the reference signal resource configured by the base station.

Optionally, the receiver 31 is further configured to: and receiving a notification message which is broadcasted by the base station and forbids sending uplink data on the reference signal resource, so that signal interference can be avoided.

In the UE provided in this embodiment, the receiver receives a first trigger signaling sent by the base station, where the first trigger signaling is used to instruct the UE to send multiple uplink reference signals, and the transmitter sends the multiple uplink reference signals on a reference signal resource configured by the base station, where the reference signal resource is N symbols, and N is greater than or equal to 1. Therefore, the receiving rate of the uplink reference signal can be improved, the transmission of the uplink reference signal of the non-periodic trigger multi-beam can be realized, and the robustness of the uplink measurement process is improved.

Fig. 12 is a schematic structural diagram of a third embodiment of a base station of the present invention, and as shown in fig. 12, the base station of this embodiment may include: the UE includes a transmitter 41 and a receiver 42, where the transmitter 41 is configured to send a first trigger signaling to the UE, so that the UE sends a plurality of uplink reference signals on reference signal resources configured by the base station after receiving the first trigger signaling, and the receiver 42 is configured to receive the uplink reference signals sent by the UE on corresponding reference signal resources, where the reference signal resources are N symbols, and N is greater than or equal to 1.

In the base station provided in this embodiment, the transmitter transmits the first trigger signaling to the UE, so that the UE transmits a plurality of uplink reference signals on the reference signal resources configured by the base station after receiving the first trigger signaling, and the receiver receives the uplink reference signals transmitted by the UE on the corresponding reference signal resources, where the reference signal resources are N symbols, and N is greater than or equal to 1. Therefore, the receiving rate of the uplink reference signal can be improved, the transmission of the uplink reference signal of the non-periodic trigger multi-beam can be realized, and the robustness of the uplink measurement process is improved.

Fig. 13 is a schematic structural diagram of a fourth base station according to the present invention, and as shown in fig. 13, the apparatus of this embodiment may further include, on the basis of the apparatus structure shown in fig. 12: a processor 43, where the processor 43 is configured to determine a first uplink reference signal, where the first uplink reference signal is an uplink reference signal with the best reception quality among all uplink reference signals received by the base station, and the transmitter 41 is further configured to transmit an index value of a symbol where the first uplink reference signal is located to the UE, so that the UE determines a first beam direction according to the index value, and continues to transmit a next uplink reference signal using the first beam direction; or sending a second trigger signaling to the UE, so that the UE continues to send the multiple uplink reference signals after receiving the second trigger signaling. Therefore, the base station can be ensured to receive the uplink reference signal with higher signal-to-noise ratio all the time in a subsequent period of time, and the uplink channel can be better measured.

In the embodiment shown in fig. 12 or fig. 13, as an implementation of configuring the reference signal resource by the base station, the transmitter 41 is further configured to: and transmitting the reference signal resource to the UE.

In the above embodiment, the transmitter 41 is further configured to: and broadcasting a notification message for prohibiting sending uplink data on the reference signal resource to all the UE served by the base station, so that signal interference can be avoided.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

As will be appreciated by one of ordinary skill in the art, various aspects of the present application, or possible implementations of various aspects, may be embodied as a system, method, or computer program product. Accordingly, aspects of the present application, or possible implementations of aspects, may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, etc.) or an embodiment combining software and hardware aspects that may all generally be referred to herein as a "circuit," module "or" system. Furthermore, aspects of the present application, or possible implementations of aspects, may take the form of a computer program product referring to computer readable program code stored in a computer readable medium.

The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing, such as Random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, and portable read-only memory (CD-ROM).

A processor in the computer reads the computer-readable program code stored in the computer-readable medium, so that the processor can perform the functional actions specified in each step, or a combination of steps, in the flowcharts; and means for generating a block diagram that implements the functional operation specified in each block or a combination of blocks.

The computer readable program code may execute entirely on the user's local computer, partly on the user's local computer, as a stand-alone software package, partly on the user's local computer and partly on a remote computer or entirely on the remote computer or server. It should also be noted that, in some alternative implementations, the functions noted in the flowchart or block diagram block may occur out of the order noted in the figures. For example, two steps or two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. An uplink reference signal transmission method, comprising:

user Equipment (UE) receives a first trigger signaling sent by a base station, wherein the first trigger signaling is used for indicating the UE to send a plurality of uplink reference signals;

the UE sends a plurality of uplink reference signals on reference signal resources configured by the base station, wherein the reference signal resources are N symbols, and N is greater than or equal to 1;

wherein, when the plurality of uplink reference signals are uplink reference signals in different beam directions, the method further includes:

the UE receives an index value of a symbol where a first uplink reference signal sent by the base station is located, determines a first beam direction according to the index value, and continues to send a next uplink reference signal by using the first beam direction, wherein the first uplink reference signal is an uplink reference signal with the optimal receiving quality received by the base station; alternatively, the first and second electrodes may be,

and the UE receives a second trigger signaling sent by the base station, wherein the second trigger signaling is used for indicating the UE to continuously send a plurality of uplink reference signals, and the second trigger signaling is sent by the base station to the UE after the base station determines that the receiving quality of the plurality of uplink reference signals is lower than a preset threshold.

2. The method of claim 1, further comprising:

3. The method of claim 2, wherein the reference signal resource comprises at least one of a number of symbols N and a transmission bandwidth of a reference signal, a frequency domain starting frequency, a comb, and a time domain period of a subframe location occupied by the reference signal resource.

4. The method of claim 3, wherein the subframe locations occupied by the reference signal resources in different periods are the same.

5. The method according to any of claims 2-4, wherein the first trigger signaling further comprises a number M of uplink reference signals transmitted by the UE, wherein M is greater than or equal to 1.

6. The method of claim 1, wherein the reference signal resource configured by the base station is included in the first trigger signaling, and wherein the reference signal resource includes at least a number of symbols N.

7. The method of claim 6, wherein the reference signal resources further comprise at least one of a transmission bandwidth of a reference signal, a frequency domain starting frequency, a bandwidth of a frequency sweep, a comb, and a time domain period of a subframe location occupied by the reference signal resources.

8. The method of claim 1, wherein the first trigger signaling further comprises:

information bits for indicating the number of symbols N of the reference signal resources, the number of subframes in which the reference signal resources are distributed, and the symbol positions in the subframes in which the reference signal resources are distributed.

9. The method according to any one of claims 6-8, further comprising:

and the UE receives a notification message which is broadcasted by the base station and forbids sending uplink data on the reference signal resource.

10. An uplink reference signal receiving method, comprising:

a base station sends a first trigger signaling to User Equipment (UE) so that the UE sends a plurality of uplink reference signals on reference signal resources configured by the base station after receiving the first trigger signaling;

the base station receives an uplink reference signal sent by the UE on a corresponding reference signal resource, wherein the reference signal resource is N symbols, and N is more than or equal to 1;

the base station determines a first uplink reference signal, wherein the first uplink reference signal is an uplink reference signal with the optimal receiving quality in all uplink reference signals received by the base station;

the base station sends an index value of a symbol where a first uplink reference signal is located to the UE, so that the UE determines a first beam direction according to the index value and continues to send a next uplink reference signal by using the first beam direction; alternatively, the first and second electrodes may be,

and the base station determines that the receiving quality of the plurality of uplink reference signals is lower than a preset threshold, and sends a second trigger signaling to the UE so that the UE continues to send the plurality of uplink reference signals after receiving the second trigger signaling.

11. The method of claim 10, further comprising:

and the base station sends the reference signal resource to the UE.

12. The method of claim 11, wherein the reference signal resource comprises at least one of a number of symbols N and a transmission bandwidth of a reference signal, a frequency domain starting frequency, a comb, and a time domain period of a subframe location occupied by the reference signal resource.

13. The method of claim 12, wherein the subframe locations occupied by the reference signal resources are the same.

14. The method of any one of claims 11-13, wherein the first trigger signaling further comprises a number M of uplink reference signals transmitted by the UE, where M is greater than or equal to 1.

15. The method of any of claims 11-13, wherein the base station does not schedule all UEs served by the base station to transmit uplink data on the configured reference signal resources.

16. The method of claim 10, wherein the reference signal resource configured by the base station is included in the first trigger signaling, and wherein the reference signal resource includes at least a number of symbols N.

17. The method of claim 16, wherein the reference signal resources further comprise at least one of a transmission bandwidth of a reference signal, a frequency domain starting frequency, a bandwidth of a frequency sweep, a comb, and a time domain period of a subframe location occupied by the reference signal resources.

18. The method of claim 10, wherein the first trigger signaling comprises:

19. The method according to any one of claims 16-18, further comprising:

and the base station broadcasts a notification message for prohibiting sending uplink data on the reference signal resource to all the UE served by the base station.

20. A user device, comprising:

a receiving module, configured to receive a first trigger signaling sent by a base station, where the first trigger signaling is used to instruct a UE to send multiple uplink reference signals;

a sending module, configured to send multiple uplink reference signals on a reference signal resource configured by the base station, where the reference signal resource is N symbols, and N is greater than or equal to 1;

when the plurality of uplink reference signals are uplink reference signals in different beam directions, the receiving module is further configured to receive an index value of a symbol where a first uplink reference signal sent by the base station is located, and determine a first beam direction according to the index value;

the sending module is further configured to continue sending a next uplink reference signal in the first beam direction, where the first uplink reference signal is an uplink reference signal with the optimal reception quality received by the base station; alternatively, the first and second electrodes may be,

the receiving module is further configured to receive a second trigger signaling sent by the base station, where the second trigger signaling is used to instruct the UE to continue sending multiple uplink reference signals, and the second trigger signaling is sent by the base station to the UE after determining that the reception quality of the multiple uplink reference signals is lower than a preset threshold.

21. The ue of claim 20, wherein the receiving module is further configured to:

receiving the reference signal resource configured by the base station.

22. The UE of claim 21, wherein the reference signal resource comprises at least one of the number of N symbols and a transmission bandwidth of a reference signal, a frequency domain starting frequency, a comb, and a time domain period of a subframe location occupied by the reference signal resource.

23. The UE of claim 22, wherein the subframe locations occupied by the reference signal resources in different periods are the same.

24. The UE of any one of claims 21-23, wherein the first trigger signaling further comprises a number M of uplink reference signals transmitted by the UE, where M is greater than or equal to 1.

25. The UE of claim 20, wherein the reference signal resource configured by the BS is included in the first trigger signaling, and wherein the reference signal resource includes at least a number of N symbols.

26. The UE of claim 25, wherein the reference signal resources further comprise at least one of a transmission bandwidth of a reference signal, a frequency domain starting frequency, a bandwidth of a frequency sweep, a comb, and a time domain period of a subframe location occupied by the reference signal resources.

27. The UE of claim 20, wherein the first trigger signaling further comprises:

28. The user equipment according to any of claims 25-27, wherein the receiving module is further configured to:

and receiving a notification message which is broadcasted by the base station and used for forbidding sending uplink data on the reference signal resource.

29. A base station, comprising:

a sending module, configured to send a first trigger signaling to a user equipment UE, so that the UE sends a plurality of uplink reference signals on reference signal resources configured by the base station after receiving the first trigger signaling;

a receiving module, configured to receive an uplink reference signal sent by the UE on a corresponding reference signal resource, where the reference signal resource is N symbols, and N is greater than or equal to 1;

a processing module, configured to determine a first uplink reference signal, where the first uplink reference signal is an uplink reference signal with an optimal reception quality among all uplink reference signals received by the base station;

the sending module is further configured to send an index value of a symbol where the first uplink reference signal is located to the UE, so that the UE determines a first beam direction according to the index value, and continues to send a next uplink reference signal using the first beam direction; alternatively, the first and second electrodes may be,

and determining that the receiving quality of the plurality of uplink reference signals is lower than a preset threshold, and sending a second trigger signaling to the UE so that the UE continues to send the plurality of uplink reference signals after receiving the second trigger signaling.

30. The base station of claim 29, wherein the sending module is further configured to:

transmitting the reference signal resource to the UE.

31. The base station of claim 30, wherein the reference signal resource comprises at least one of a number of symbols N and a transmission bandwidth of a reference signal, a frequency domain starting frequency, a comb, and a time domain period of a subframe location occupied by the reference signal resource.

32. The base station of claim 31, wherein the reference signal resources occupy the same subframe location.

33. The base station according to any of claims 30-32, wherein the first trigger signaling further comprises a number M of uplink reference signals transmitted by the UE, where M is greater than or equal to 1.

34. The base station of any of claims 30-32, wherein the base station does not schedule all UEs served by the base station to transmit uplink data on the configured reference signal resources.

35. The base station according to claim 29, wherein the reference signal resource configured by the base station is included in the first trigger signaling, and the reference signal resource includes at least a symbol number N.

36. The base station of claim 35, wherein the reference signal resources further comprise at least one of a transmission bandwidth of a reference signal, a frequency domain starting frequency, a bandwidth of a frequency sweep, a comb, and a time domain period of a subframe location occupied by the reference signal resources.

37. The base station of claim 29, wherein the first trigger signaling comprises:

38. The base station of any of claims 35-37, wherein the sending module is further configured to:

and broadcasting a notification message for prohibiting sending uplink data on the reference signal resource to all the UE served by the base station.

39. A readable storage medium, characterized by storing a program;

the program is executed by a processor to perform the uplink reference signal transmission method according to any one of claims 1 to 9.

40. A readable storage medium, characterized by storing a program;

the program is executed by a processor to perform the uplink reference signal receiving method according to any one of claims 10 to 19.

41. A communication system, comprising: the user equipment of any of claims 20 to 28, and the base station of any of claims 29 to 38.