CN110099446B

CN110099446B - Uplink transmission method and device, communication system and computer storage medium

Info

Publication number: CN110099446B
Application number: CN201810091474.XA
Authority: CN
Inventors: 高雪娟
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-01-30
Filing date: 2018-01-30
Publication date: 2023-05-30
Anticipated expiration: 2038-01-30
Also published as: CN110099446A

Abstract

The application discloses an uplink transmission method and device, a communication system and a computer storage medium, which are used for determining specific content of uplink transmission based on overlapping conditions of SRS resource sets and uplink channels, avoiding mutual interference between SRS and the uplink channels and improving uplink transmission performance. The uplink transmission method provided by the application comprises the following steps: determining a Sounding Reference Signal (SRS) resource set; and carrying out uplink transmission based on the overlapping condition of the SRS resource set and the uplink channel resource.

Description

Uplink transmission method and device, communication system and computer storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an uplink transmission method and apparatus, a communication system, and a computer storage medium.

Background

In the new wireless communication system (i.e., 5G NR,5Generation New RAT) system, the resources of the sounding reference signal (Sounding Reference Signal, SRS) are semi-statically configured by user equipment specific (UE-specific) radio resource control (Radio Resource Control, RRC) signaling and can start on any of the last 6 symbols in a slot (slot), occupying 1 or 2 or 4 symbol transmissions. Due to the large amount of resources occupied by SRS, there may be a collision with resources of a physical shared CHannel (Physical Uplink Shared CHannel, PUSCH) or a physical control CHannel (Physical Uplink Control CHannel, PUCCH), however there is currently no corresponding solution.

Disclosure of Invention

The embodiment of the application provides an uplink transmission method and device, a communication system and a computer storage medium, which are used for determining specific content of uplink transmission based on overlapping conditions of SRS resource sets and uplink channels, avoiding mutual interference between SRS and the uplink channels and improving uplink transmission performance.

The uplink transmission method provided by the embodiment of the application comprises the following steps:

determining a Sounding Reference Signal (SRS) resource set;

and carrying out uplink transmission based on the overlapping condition of the SRS resource set and the uplink channel resource.

By the method, the SRS resource set is determined, and uplink transmission is performed based on the overlapping condition of the SRS resource set and the uplink channel resource, so that the specific content of the uplink transmission is determined based on the overlapping condition of the SRS resource set and the uplink channel, the mutual interference of the SRS and the uplink channel is avoided, and the uplink transmission performance is improved.

Optionally, uplink transmission is performed based on the overlapping situation of the SRS resource set and the uplink channel resource, which specifically includes:

and if the transmission symbol corresponding to the uplink channel does not contain the SRS transmission symbol in the SRS resource set, transmitting the uplink channel on the transmission symbol corresponding to the uplink channel and the frequency domain resource.

Therefore, when the transmission symbol corresponding to the uplink channel does not include the SRS transmission symbol in the SRS resource set, the uplink channel can be transmitted on the transmission symbol corresponding to the uplink channel and the frequency domain resource.

if the transmission symbol corresponding to the uplink channel includes at least one SRS transmission symbol in the SRS resource set, uplink transmission is performed by one of the following modes:

mode 1, determining whether an SRS frequency domain resource on the at least one SRS transmission symbol overlaps with a frequency domain resource of the uplink channel on the at least one SRS transmission symbol, and performing uplink transmission based on a determination result;

mode 2, judging whether or not there is SRS transmission on the at least one SRS transmission symbol, and performing uplink transmission based on a judgment result;

mode 3, determining that the uplink channel is not mapped to be transmitted on the at least one SRS transmission symbol.

Thus, when the transmission symbol corresponding to the uplink channel includes at least one SRS transmission symbol in the SRS resource set, uplink transmission may be performed in the above-described mode 1, mode 2, or mode 3.

Optionally, when there is an overlap between the SRS frequency domain resource on the at least one SRS transmission symbol and the frequency domain resource on the at least one SRS transmission symbol of the uplink channel, the mode 1 specifically includes one of the following modes:

mode 1-1: determining that the uplink channel is transmitted on the at least one SRS transmission symbol without being mapped to a frequency domain resource overlapping with an SRS frequency domain resource;

mode 1-2: determining that the uplink channel is not mapped for transmission on the at least one SRS transmission symbol;

modes 1 to 3: if the frequency domain resource of the uplink channel on the at least one SRS transmission symbol comprises an SRS frequency domain resource, adopting a mode 1-1 or a mode 1-2;

if the frequency domain resource of the uplink channel on the at least one SRS transmission symbol is partially overlapped with the SRS frequency domain resource, further judging whether SRS transmission exists on the at least one SRS transmission symbol, and if so, adopting a mode 1-2; if not, then use mode 1-1;

modes 1 to 4: judging whether SRS transmission exists on the at least one SRS transmission symbol, and if so, adopting a mode 1-2; if not, mode 1-1 is employed.

Thus, when there is an overlap between the SRS frequency domain resource on the at least one SRS transmission symbol and the frequency domain resource on the at least one SRS transmission symbol of the uplink channel, uplink transmission may be performed in the above manner 1-1, manner 1-2, manner 1-3, or manner 1-4.

Optionally, when the SRS frequency domain resource on the at least one SRS transmission symbol does not overlap with the frequency domain resource on the at least one SRS transmission symbol of the uplink channel, the mode 1 specifically includes one of the following modes:

modes 1 to 5: transmitting the uplink channel on a transmission symbol and a frequency domain resource corresponding to the uplink channel;

modes 1 to 6: determining whether an SRS transmission is present on the at least one SRS transmission symbol,

if so, determining that the uplink channel is not mapped on a transmission symbol with SRS transmission in the at least one SRS transmission symbol;

and if the uplink channel does not exist, transmitting the uplink channel on the transmission symbol and the frequency domain resource corresponding to the uplink channel.

Thus, when the SRS frequency domain resource on the at least one SRS transmission symbol does not overlap with the frequency domain resource on the at least one SRS transmission symbol of the uplink channel, uplink transmission may be performed in the above-described modes 1 to 5 or modes 1 to 6.

Optionally, the mode 2 specifically includes:

if there is no SRS transmission on the at least one SRS transmission symbol, further determining whether there is overlap with the frequency domain resources of the uplink channel on the at least one SRS transmission symbol,

if there is overlap, specifically, uplink transmission is performed by one of the following modes:

mode 2-1: determining that the uplink channel is transmitted on a frequency domain resource that is not mapped to overlap with an SRS frequency domain resource on the at least one SRS transmission symbol;

mode 2-2: determining that the uplink channel is not mapped for transmission on the at least one SRS transmission symbol;

and if the uplink channel does not overlap, transmitting the uplink channel on the transmission symbol and the frequency domain resource corresponding to the uplink channel.

Thus, when there is no SRS transmission on the at least one SRS transmission symbol and there is an overlap between the SRS frequency domain resource on the at least one SRS transmission symbol and the frequency domain resource on the at least one SRS transmission symbol of the uplink channel, uplink transmission may be performed in the above-described manner 2-1 or manner 2-2.

Optionally, the mode 2 specifically includes:

If SRS transmission is present on the at least one SRS transmission symbol, determining that the uplink channel does not map transmission on a symbol in which SRS transmission is present in the at least one SRS transmission symbol.

Thus, when there is an SRS transmission on the at least one SRS transmission symbol, the uplink channel may not map the transmission on the symbol on which the SRS transmission is present in the at least one SRS transmission symbol.

Optionally, the method further comprises:

and discarding the SRS when the symbol carrying the demodulation reference signal (DMRS) in the resource corresponding to the uplink channel is overlapped with at least one SRS resource in the SRS resource set and SRS transmission exists on the overlapped symbol.

Thus, if the SRS resource set overlaps with the DMRS of the uplink channel, during the uplink channel transmission, the overlapping symbol is determined to be usable for DMRS transmission, but not for SRS transmission, regardless of the overlapping of the DMRS and the SRS resource set.

Optionally, when the number of symbols or the number of resource blocks RBs or the number of resource elements REs required to be reserved for the SRS in the uplink channel exceeds a predetermined threshold, the resource reservation is not performed for the SRS, or only a part of SRS symbols is performed for the resource reservation.

Therefore, when the number of symbols or the number of RBs or the number of REs which are required to be reserved for SRS but cannot be mapped in the uplink channel exceeds a predetermined threshold, the uplink channel can carry out resource mapping and transmission according to the self-configured transmission symbols and RBs; or, only a part of SRS symbols are reserved for resources, for example, a symbol to be reserved or a predetermined part of RBs or REs is selected for resource reservation, for example, the first a symbols, or B RBs starting from low frequency or high frequency, or C REs of time-domain first, frequency-domain second, or time-domain first, or the like.

Optionally, determining the sounding reference signal SRS resource set specifically includes:

and receiving configuration information of the SRS resource set sent by the network side, and determining the SRS resource set according to the configuration information.

Therefore, on the terminal side, the configuration information of the SRS resource set sent by the network side can be received, and the SRS resource set can be determined according to the configuration information.

Optionally, after determining the sounding reference signal SRS resource set, before uplink transmission based on the overlapping situation of the SRS resource set and the uplink channel resource, the method further includes:

and sending the configuration information of the SRS resource set to a terminal.

Therefore, on the base station side, after the Sounding Reference Signal (SRS) resource set is determined, configuration information of the SRS resource set can be sent to the terminal, so that the terminal can determine the Sounding Reference Signal (SRS) resource set based on the configuration information.

Accordingly, an uplink transmission device provided in the embodiment of the present application includes:

a memory for storing program instructions;

and the processor is used for calling the program instructions stored in the memory and executing according to the obtained program:

determining a Sounding Reference Signal (SRS) resource set;

The uplink transmission device provided in the embodiment of the present application may be a terminal, or may be a network side device, for example, a base station. And if the terminal is a terminal, the terminal performs uplink transmission based on the overlapping condition of the SRS resource set and the uplink channel resource, and if the terminal is a network side device, the network side device performs uplink reception based on the overlapping condition of the SRS resource set and the uplink channel resource.

Optionally, the mode 2 specifically includes:

Optionally, the processor is further configured to:

after determining a Sounding Reference Signal (SRS) resource set, sending configuration information of the SRS resource set to a terminal before uplink transmission based on the overlapping condition of the SRS resource set and uplink channel resources.

An uplink transmission device provided in another embodiment of the present application includes:

a first unit, configured to determine a sounding reference signal SRS resource set;

and a second unit, configured to perform uplink transmission based on the overlapping situation of the SRS resource set and the uplink channel resource.

The communication system provided by the embodiment of the application comprises:

a base station, configured to determine a sounding reference signal SRS resource set, send configuration information of the SRS resource set to a terminal, and receive an uplink channel and/or SRS based on an overlapping condition of the SRS resource set and an uplink channel resource;

and the terminal is used for determining an SRS resource set according to the configuration information and transmitting an uplink channel and/or SRS based on the overlapping condition of the SRS resource set and the uplink channel resource.

The communication system provided by the embodiment of the application can be a 5G NR system, so that the specific content of uplink transmission can be determined based on the overlapping condition of the SRS resource set and the uplink channel in the 5G NR system, the mutual interference between the SRS and the uplink channel is avoided, and the uplink transmission performance of the 5G NR system is improved.

Another embodiment of the present application provides a computer storage medium storing computer-executable instructions for causing the computer to perform any one of the methods described above.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of SRS resource aggregation provided in an embodiment of the present application;

fig. 2 to fig. 5 are schematic diagrams of relationships between different SRS resource sets and uplink channel resources provided in the embodiments of the present application, respectively;

fig. 6 is a flow chart of an uplink transmission method provided in the embodiment of the present application;

fig. 7 is a schematic structural diagram of an uplink transmission device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of another uplink transmission device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a third uplink transmission device according to an embodiment of the present application.

Detailed Description

SRS can only be transmitted on the last symbol of one subframe (subframe). The resource allocation of the SRS is specifically configured by RRC signaling (signaling) dedicated to a Cell-specific and RRC signaling dedicated to a user equipment (UE-specific), and the resource allocation at least includes configuration of SRS transmission period, frequency domain resources, and the like. The SRS resources configured by the RRC signaling of the UE-specific are a subset of the SRS resources configured by the RRC signaling of the Cell-specific. Therefore, a User Equipment (UE) may determine, according to the SRS configuration of the cell-specific, a range of resources in which other UEs may transmit the SRS, and then perform rate matching (rate matching) on uplink data based on the resources of the SRS, where the rate matching reserves resources corresponding to SRS transmission in one subframe to the SRS without mapping uplink data, and the uplink data performs rate matching and resource mapping based on resources other than the resources corresponding to the SRS in one subframe.

With the development and variation of mobile communication service requirements, in the 5G NR system, the configuration of SRS is currently performed for each UE, that is, semi-static configuration is performed through RRC signaling of UE-specific, and may start on any symbol on the last 6 symbols in a slot, and occupy 1 or 2 or 4 symbol transmissions. In the 5G NR system, SRS of different UEs may be configured to be transmitted on maximum 4 symbols from any one symbol of the last 6 symbols of a slot, and SRS configuration in the NR system is currently UE-specific, that is, one UE cannot know SRS resource allocation of other UEs, there may be PUCCH or PUSCH resources of one UE, and there may be a collision with SRS of the UE or other UEs. The manner of rate matching SRS for cell-specific SRS resources in LTE is no longer applicable. Therefore, in the embodiment of the present application, it is proposed to determine how to perform uplink transmission according to the overlapping relationship between the SRS resource set and the uplink channel.

The technical scheme provided by the embodiment of the application is suitable for a terminal side and a base station side, and specifically comprises the following steps:

step one: a set of SRS resources is determined.

The SRS resource set includes SRS transmission symbol (e.g., SC-FDMA or DFT-S-OFDM or OFDM symbol) positions and SRS frequency domain resources at each SRS transmission symbol position.

The SRS resource set may be composed of a plurality of SRS resource subsets, and SRS occurrence periods of different SRS resource subsets may be different, i.e., slots that occur may be different even though symbol positions in the same slot (slot) are the same.

For a terminal side, step one, determining an SRS resource set according to configuration information sent by a base station;

for the base station side, the first step includes determining an SRS resource set, and transmitting configuration information of the SRS resource set to the terminal.

Step two: and carrying out uplink transmission based on the overlapping condition of the SRS resource set and the resources of the uplink channel.

For the terminal side, the uplink transmission is embodied by sending an uplink channel and/or SRS;

for the base station side, uplink transmission is embodied in receiving an uplink channel and/or SRS.

Case 1: if the transmission symbol corresponding to the uplink channel does not contain the SRS transmission symbol in the SRS resource set, transmitting the uplink channel on the transmission symbol corresponding to the uplink channel and the frequency domain resource; namely, the uplink channel is directly transmitted without reserving any resource for SRS;

case 2: if the transmission symbol corresponding to the uplink channel includes at least one SRS transmission symbol in the SRS resource set, then:

Mode 1: further determining whether there is overlap between the SRS frequency domain resource on the at least one SRS transmission symbol and the frequency domain resource on the at least one SRS transmission symbol of the uplink channel,

if overlap exists (partial or full overlapping):

mode 1-1: determining that the uplink channel is not mapped to a frequency domain resource (possibly full overlapping or partial overlapping) overlapping with the SRS frequency domain resource on at least one SRS transmission symbol; that is, the information transmitted on the uplink channel is based on that the reservation of the resources overlapping with the SRS resources on at least one SRS transmission symbol is not used, but rate matching (rate matching) is performed, that is, the information transmitted on the uplink channel is mapped to the resources (time domain and frequency domain) corresponding to the uplink channel, the information is transmitted on the resources except the resources overlapping with the SRS resources on at least one SRS transmission symbol, and the rate matching is performed according to the resources corresponding to the mapping mode, that is, if the frequency domain resources of the uplink channel on a certain symbol overlap with the SRS resources only partially, it is determined that the overlapping frequency domain resources on the symbol are not used, and the information is only mapped to the resources not overlapping with the SRS resources on the symbol for transmission;

At this time, if the frequency domain resource of the uplink channel on the at least one SRS transmission symbol includes the SRS frequency domain resource on the at least one SRS transmission symbol (i.e. fully covering (full coverage) with one SRS resource set), it is equivalent to that the uplink channel is not transmitted on the at least one SRS transmission symbol, i.e. the information transmitted on the uplink channel is not mapped on the at least one SRS transmission symbol, and the mapping result is equivalent to modes 1-2;

mode 1-2: determining that the uplink channel is not mapped on at least one SRS transmission symbol; that is, the information transmitted on the uplink channel is mapped to the symbols except for at least one SRS transmission symbol in the transmission symbols corresponding to the uplink channel for transmission based on that at least one SRS transmission symbol is not reserved, and the information is mapped to the symbols except for the at least one SRS transmission symbol for transmission according to the resources corresponding to the mapping mode, that is, if the frequency domain resources of the uplink channel on a certain symbol overlap with the SRS resources, the whole symbol reservation is determined to be not used, and the information is only mapped to the symbols except for the symbol in the transmission symbols corresponding to the uplink channel for transmission;

the following modes 1 to 3 and modes 1 to 4 correspond to the mode 1 to 1 and the mode for determining whether or not an SRS is present (the presence of an SRS means that, for a certain terminal, an SRS transmission of the terminal is present on the at least one SRS transmission symbol, and for a base station, when receiving information from a certain terminal, it is determined that an SRS transmission of the terminal is present on the at least one SRS transmission symbol; the absence of SRS means that for a certain terminal, there is no SRS transmission of the terminal on the at least one SRS transmission symbol, but it is not excluded whether there is SRS transmission of other terminals, and for a base station, when receiving information from a certain terminal, it is determined whether there is no SRS transmission of the terminal on the at least one SRS transmission symbol, but it is not excluded whether there is SRS transmission of other terminals, whether there is an SRS transmission of other terminals can be determined by a preconfigured SRS period, or whether there is an SRS transmission is determined according to an SRS trigger signaling, or the like), and when there is a symbol, a part of overlapped frequency domain resources is reserved.

Modes 1 to 3: if the frequency domain resource of the uplink channel on at least one SRS transmission symbol contains an SRS frequency domain resource (i.e. is overlapping with the SRS frequency domain resource on that symbol), then either mode 1-1 or mode 1-2 is employed; if the frequency domain resource of the uplink channel on at least one SRS transmission symbol partially overlaps with the SRS frequency domain resource (i.e. is overlapped with the SRS frequency domain resource partial overlapping on the symbol), it is further determined whether or not the terminal has SRS transmission on at least one SRS transmission symbol:

if present, means 1-2;

if not, then use mode 1-1; of course, mode 1-2 could be used here, but mode 1-3 is equivalent to mode 1-2 as a result of this.

Modes 1 to 4: further determining whether the terminal has SRS transmission on at least one SRS transmission symbol:

if present, means 1-2;

if not, then use mode 1-1; of course, mode 1-2 could be used here, but mode 1-4 is equivalent to mode 1-2 as a result of this.

In one embodiment, when the uplink channel uses orthogonal frequency division multiplexing multiple access (DFT-s-OFDM) or Single carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access, SC-FDMA) waveform transmission by discrete fourier transform spreading, or uses a frequency domain orthogonal sequence (for example, NR PUCCH format 4), the uplink transmission may be performed in the above manner 1-2, manner 1-3, or manner 1-4; of course, the waveforms of the uplink channels may not be limited, i.e., the above-described modes may be applied regardless of the waveform employed;

If there is no overlap (i.e., the SRS frequency domain resources on the at least one SRS transmission symbol do not overlap with the frequency domain resources on the at least one SRS transmission symbol for the uplink channel), then:

modes 1 to 5: transmitting an uplink channel on a transmission symbol and a frequency domain resource corresponding to the uplink channel;

modes 1 to 6: determining whether the terminal has an SRS transmission on at least one SRS transmission symbol,

if present, then: determining that the uplink channel is not mapped on a transmission symbol in which SRS transmission exists in at least one SRS transmission symbol; that is, the information transmitted on the uplink channel is mapped to the symbols except for at least one SRS transmission symbol in the transmission symbols corresponding to the uplink channel for transmission based on that at least one SRS transmission symbol is not reserved, and the rate matching is performed on the information according to the resources corresponding to the mapping mode;

if not, then: and transmitting the uplink channel on the transmission symbol and the frequency domain resource corresponding to the uplink channel.

In one embodiment, modes 1-6 are used when the uplink channel is transmitted using DFT-s-OFDM or SC-FDMA waveforms or using frequency domain orthogonal sequences (e.g., NR PUCCH format 4); of course, the waveforms of the uplink channels may not be limited, i.e., the above-described modes may be applied regardless of the waveform employed;

Mode 2: determining whether SRS transmission exists on at least one SRS transmission symbol;

if not, further judging whether the SRS frequency domain resource on the at least one SRS transmission symbol is overlapped with the frequency domain resource of the uplink channel on the at least one SRS transmission symbol,

if there is overlap:

mode 2-1: determining that the uplink channel is not mapped to frequency domain resources overlapping with the SRS frequency domain resources on at least one SRS transmission symbol (may be full overlapping or partially overlapping (partial overlapping)); that is, the information transmitted on the uplink channel is rate-matched based on that the resource reservation of the uplink channel overlapping with the SRS resource on at least one SRS transmission symbol is not used, that is, the information transmitted on the uplink channel is mapped to the resources (time domain and frequency domain) corresponding to the uplink channel, the information is transmitted on the resources except the resources overlapping with the SRS resource on at least one SRS transmission symbol, and the rate matching is performed on the information according to the resources corresponding to the mapping mode, that is, if the frequency domain resource of the uplink channel on a certain symbol only partially overlaps with the SRS resource, it is determined that the overlapping frequency domain resource reservation on the symbol is not used, and the information is only mapped to the resources not overlapping with the SRS resource on the symbol.

At this time, if the frequency domain resource of the uplink channel on the at least one SRS transmission symbol includes the SRS frequency domain resource on the at least one SRS transmission symbol (i.e. and one SRS resource set full overlapping), it is equivalent to that the uplink channel does not transmit on the at least one SRS transmission symbol, i.e. the information transmitted on the uplink channel is not mapped on the at least one SRS transmission symbol, and the mapping result is equivalent to mode 2-2;

mode 2-2: determining that the uplink channel is not mapped on at least one SRS transmission symbol; that is, the information transmitted on the uplink channel is mapped to the symbols except for at least one SRS transmission symbol in the transmission symbols corresponding to the uplink channel based on that at least one SRS transmission symbol is not reserved, and the information is mapped to the symbols except for the at least one SRS transmission symbol in the transmission symbols corresponding to the uplink channel and is transmitted according to the resources corresponding to the mapping mode, that is, if the frequency domain resources of the uplink channel on a certain symbol overlap with the SRS resources, it is determined that the whole symbol is not reserved, and the information is only mapped to the symbols except for the symbol in the transmission symbols corresponding to the uplink channel.

In one embodiment, when the uplink channel is transmitted using a DFT-s-OFDM or SC-FDMA waveform or using a frequency domain orthogonal sequence (e.g., NR PUCCH format 4), mode 2-2 is used; of course, the waveforms of the uplink channels may not be limited, i.e., the above-described modes may be applied regardless of the waveform employed;

If there is no overlap (i.e., there is no overlap between the SRS frequency domain resource on the at least one SRS transmission symbol and the frequency domain resource on the at least one SRS transmission symbol of the uplink channel), transmitting the uplink channel on the transmission symbol and the frequency domain resource corresponding to the uplink channel;

if so (i.e., there is SRS transmission on the at least one SRS transmission symbol), determining that the uplink channel is not mapped on a symbol in which there is SRS transmission in the at least one SRS transmission symbol; that is, the information transmitted on the uplink channel is based on that the reservation of the symbol having SRS transmission in at least one SRS transmission symbol is not used, that is, the information transmitted on the uplink channel is mapped to the transmission symbol corresponding to the uplink channel, the information is transmitted on the symbols except for the symbol having SRS transmission in at least one SRS transmission symbol, and the information is mapped according to the resource corresponding to the mapping mode, that is, whether the SRS frequency domain resource overlaps with the frequency domain resource of the uplink channel or not, because the terminal needs to transmit SRS on the symbol, the reservation of the whole symbol is not used, and the information carried on the uplink channel is only mapped to the symbols except for the symbol in the transmission symbol corresponding to the uplink channel for transmission.

Mode 3: determining that the uplink channel is not mapped on at least one SRS transmission symbol; that is, whether or not the frequency domain resource of the SRS overlaps with the frequency domain resource of the uplink channel, the symbol is reserved and not used for uplink channel transmission, and the information transmitted on the uplink channel is mapped to the symbols except for at least one SRS transmission symbol in the transmission symbols corresponding to the uplink channel and is transmitted based on the reservation of at least one SRS transmission symbol, and the information is mapped according to the resources corresponding to the mapping mode.

In the method, when a symbol carrying a demodulation reference signal (Demodulation Reference Signal, DMRS) in a resource corresponding to an uplink channel overlaps at least one SRS resource in an SRS resource set, and the terminal has SRS transmission on the symbol with the overlapping, the SRS is discarded (drop); that is, if the SRS resource set overlaps with the DMRS of the uplink channel, during uplink channel transmission, the overlapping symbol is determined to be usable for DMRS transmission, but not for SRS transmission, regardless of the overlapping of the DMRS and the SRS resource set.

In the above method, when the number of symbols or the number of physical Resource Blocks (RBs) or the number of Resource Elements (REs) that need to be reserved for SRS (i.e. that cannot be used for uplink channel transmission) in the uplink channel exceeds a predetermined threshold, the Resource reservation is not performed for SRS, i.e. the uplink channel may perform Resource mapping and transmission according to the transmission symbol and the frequency domain Resource that are configured by itself, or,

The resource reservation is performed on only part of SRS resources (such as part of SRS symbols, part of SRS RBs, etc.), and the reservation may be any of the above manners, for example, selecting a symbol to be reserved or a predetermined part of RBs or REs to be reserved, for example, the first a symbols, or B RBs starting from a low frequency or a high frequency, or C REs of a time-domain-first, a frequency-domain-second, or a time-domain-first, etc.; wherein A, B, C is a preset positive integer.

It should be noted that the overlapping indicates that the time domain resource and the frequency domain resource have the same position;

the uplink channel may be PUSCH or PUCCH; for any uplink channel, one of the modes can be selected according to the waveform used by the uplink channel, and different waveforms can correspond to different modes, however, the one mode can be uniformly used according to various waveforms, namely, different waveforms correspond to the same mode.

An illustration of specific embodiments is given below.

Examples: assuming that the SRS resource set is composed of two SRS resource subsets, as shown in fig. 1, the SRS symbol included in the SRS resource subset 1 is the 4 th symbol (i.e. 11 th symbol) of the reciprocal of one slot, the frequency domain resource on each symbol is the RB set a, the period is 2 slots, that is, only the slots such as slot0, 2, 4 … exist, the SRS symbol included in the SRS resource subset 2 is the 1 st symbol and the 2 nd symbol (i.e. 13 th and 14 th symbols) of the reciprocal of one slot, the frequency domain resource on each symbol is the RB set B, and the period is 1 slot, that is, the frequency domain resource exists in each slot; assume that the SRS of UE1 is configured to transmit SRS in SRS resource subset 1;

1) When there is one uplink channel transmission in slot0 by UE1, and the time domain resources allocated for the uplink channel are the 8 th to 14 th symbols (symbols numbered 7 to 13, assuming that the symbol numbers in 1 slot start from 0) and the frequency domain resources are RB set C, the transmission symbols of the uplink channel include SRS transmission symbols in the SRS resource set (i.e., the 11 th, 13 th and 14 th symbols in the slot).

Mode 1: judging whether the RB set C of the uplink channel is overlapped with the frequency domain resource RB set A of the SRS or not on the 11 th symbol, and judging whether the RB set C of the uplink channel is overlapped with the frequency domain resource RB set B of the SRS or not on the 13 th symbol and the 14 th symbol; for example, there is no overlap of RB set C with RB set a, but there is overlap with RB set B, then:

mode 1-1+ mode 1-5: on the 11 th symbol, although the UE1 has SRS transmission on the symbol, the SRS and the uplink channel do not overlap, and may be transmitted in parallel, and modes 1-5 are used, on the symbol, the SRS is transmitted on the frequency domain resource of the SRS (the frequency domain resource of the SRS may be a subset or a whole set of RB set a), and the uplink channel is transmitted on the frequency domain resource RB set C of the uplink channel, that is, the uplink channel does not reserve resources on the symbol; on the 13 th and 14 th symbols, there is overlap of frequency domain resources, and using mode 1-1, no uplink channel is transmitted only in the overlapped frequency domain part; as shown in fig. 2.

Mode 1-1+ mode 1-6: on the 11 th symbol, there is no overlap in frequency domain resources, but since UE1 has SRS transmission on the symbol, when DFT-s-OFDM or SC-FDMA waveform is used for uplink transmission, in order to ensure single carrier characteristics (lower PAPR and CM), only one signal or channel transmission can exist on one symbol, and modes 1-6 are used, and no uplink channel is transmitted on the symbol; on the 13 th and 14 th symbols, there is overlap of frequency domain resources, and using mode 1-1, the uplink channel is not transmitted only in the overlapped frequency domain portion, as shown in fig. 3.

Mode 1-2+ mode 1-5: on the 11 th symbol, although the UE1 has SRS transmission on the symbol, the SRS and the uplink channel do not overlap, and may be transmitted in parallel, and modes 1-5 are used, on the symbol, the SRS is transmitted on the frequency domain resource of the SRS (the frequency domain resource of the SRS may be a subset or a whole set of RB set a), and the uplink channel is transmitted on the frequency domain resource RB set C of the uplink channel, that is, the uplink channel does not reserve resources on the symbol; on the 13 th and 14 th symbols, there is overlap of frequency domain resources, using mode 1-2, on which no uplink channel is transmitted, as shown in fig. 4;

Mode 1-2+ mode 1-6: on the 11 th symbol, there is no overlap in frequency domain resources, but since UE1 has SRS transmission on the symbol, when DFT-s-OFDM or SC-FDMA waveform is used for uplink transmission, in order to ensure single carrier characteristics (lower PAPR and CM), only one signal or channel transmission can exist on one symbol, and modes 1-6 are used, and no uplink channel is transmitted on the symbol; on the 13 th and 14 th symbols, there is overlap of frequency domain resources, using mode 1-2, the uplink channel is not transmitted on the symbol, as shown in fig. 5;

on the 13 th and 14 th symbols, when either mode 1-3 or mode 1-4 is used, since UE1 has no SRS transmission, it is determined that there is no SRS, and the mode 1-1 is performed in the same way as mode 1-1, and the mode 1-1 is combined with mode 1-5 and mode 1-6; if it is assumed that the UE1 also has SRS transmission in the SRS resource subset 2, it is determined that there is SRS, and the manner of execution is the same as the manner 1-2, and the manner 1-2 is combined with the manner 1-5 and the manner 1-6;

mode 2: on the 11 th symbol, if the UE1 is judged to have SRS transmission, whether the RB set C of the uplink channel is overlapped with the frequency domain resource RB set A of the SRS or not is judged, the uplink channel is directly determined not to be mapped on the symbol for transmission; on the 13 th and 14 th symbols, if it is determined that the UE1 does not have SRS transmission (the SRS resource may be an SRS transmission resource of another UE), it is further determined whether the RB set C of the uplink channel overlaps with the frequency domain resource RB set B of the SRS; for example, assume that there is an overlap:

Mode 2-1: the uplink channel is not transmitted only in the overlapped frequency domain part, as shown in fig. 3;

mode 2-2: no uplink channel is transmitted on the symbol (13 th, 14 th symbols), as shown in fig. 5;

mode 3: because the transmission symbols of the uplink channel include SRS transmission symbols, no uplink channel transmission is performed on the SRS transmission symbols, i.e. the uplink channel is not mapped to the 1 st, 2 nd and 4 th symbols in slot0 and is only mapped to the 8 th, 9 th, 10 th and 12 th symbols in slot0, as shown in fig. 5;

in the above embodiment, the information carried on the uplink channel is only channel coded and rate matched for the number of REs on these mapped symbols, and in RB set C. In the above embodiment, if the SRS transmission symbol in the SRS resource set overlaps with the DMRS of the uplink channel, on the overlapping symbol, if the UE has SRS transmission, the SRS is drop; optionally, the base station should avoid overlapping the configured SRS symbols with the DMRS symbols. If the priority of the uplink channel is higher or more important, for example, carrying a scheduling request (Scheduling Request, SR)/hybrid automatic repeat request acknowledgement (HARQ-ACK), or Ultra-high reliability and Ultra-low latency communication (URLLC) PUSCH, the base station should optionally avoid resource overlapping between the configured SRs and the uplink channel, and further avoid resource reservation of the uplink channel for the SRs resource.

In summary, referring to fig. 6, an uplink transmission method provided in the embodiment of the present application includes:

s101, determining a sounding reference signal SRS resource set;

s102, uplink transmission is carried out based on the overlapping condition of the SRS resource set and the uplink channel resource.

The method provided by the embodiment of the application can be applied to a terminal side and a base station side. For the terminal side, step S101 is to determine an SRS resource set according to configuration information sent by the base station; for the base station side, step S101 includes determining an SRS resource set, and transmitting configuration information of the SRS resource set to the terminal. For the terminal side, the step S102 of uplink transmission is embodied as sending an uplink channel and/or SRS; for the base station side, the uplink transmission in step S102 is specifically performed by receiving an uplink channel and/or SRS.

Optionally, the mode 2 specifically includes:

Optionally, the method further comprises:

Accordingly, referring to fig. 7, on a network side, an uplink transmission apparatus provided in the embodiment of the present application includes:

a memory 520 for storing program instructions;

a processor 500 for calling program instructions stored in the memory, executing according to the obtained program:

determining a Sounding Reference Signal (SRS) resource set;

based on the overlapping situation of the SRS resource set and the uplink channel resource, uplink transmission (specifically, uplink reception) is performed by the transceiver 510.

Optionally, the processor 500 is further configured to:

after determining the Sounding Reference Signal (SRS) resource set, the configuration information of the SRS resource set is sent to the terminal through the transceiver 510 before uplink transmission based on the overlapping condition of the SRS resource set and uplink channel resources.

A transceiver 510 for receiving and transmitting data under the control of the processor 500.

Wherein in fig. 7, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 500 and various circuits of memory represented by memory 520, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 510 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 in performing operations.

The processor 500 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA), or a complex programmable logic device (Complex Programmable Logic Device, CPLD).

Accordingly, referring to fig. 8, an uplink transmission apparatus provided in the embodiment of the present application includes:

a memory 620 for storing program instructions;

processor 600 for invoking program instructions stored in said memory, executing according to the obtained program:

determining a Sounding Reference Signal (SRS) resource set;

based on the overlapping situation of the SRS resource set and the uplink channel resource, uplink transmission (specifically, uplink transmission) is performed by the transceiver 610.

Optionally, the processor 600 determines the set of sounding reference signal SRS resources, specifically including:

the processor 600 receives configuration information of an SRS resource set sent by a network side, and determines the SRS resource set according to the configuration information.

A transceiver 610 for receiving and transmitting data under the control of the processor 600.

Wherein in fig. 8, a bus architecture may comprise any number of interconnected buses and bridges, and in particular, one or more processors represented by processor 600 and various circuits of memory represented by memory 620, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 610 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 630 may also be an interface capable of interfacing with an inscribed desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.

Alternatively, the processor 600 may be a CPU (Central processing Unit), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable Gate Array, field programmable Gate array), or CPLD (Complex Programmable Logic Device ).

The following applies to both the terminal-side and base station-side devices.

Optionally, the mode 2 specifically includes:

Optionally, the processor is further configured to:

Referring to fig. 9, an uplink transmission apparatus provided in another embodiment of the present application includes:

a first unit 11, configured to determine a sounding reference signal SRS resource set;

and a second unit 12, configured to perform uplink transmission based on the overlapping situation of the SRS resource set and the uplink channel resource.

The uplink transmission device provided in the embodiment of the present application may be a terminal, or may be a network side device, for example, a base station. And if the terminal is a terminal, the terminal performs uplink transmission based on the overlapping condition of the SRS resource set and the uplink channel resource, and if the terminal is a network side device, the network side device performs uplink reception based on the overlapping condition of the SRS resource set and the uplink channel resource. The first unit and the second unit may be implemented by physical devices such as a processor.

and the at least one terminal is used for determining an SRS resource set according to the configuration information and transmitting an uplink channel and/or an SRS based on the overlapping condition of the SRS resource set and the uplink channel resource.

The base station may be the uplink transmission device on the base station side, and the terminal may be the uplink transmission device on the terminal side.

The present embodiments provide a computer storage medium for storing computer program instructions for use with the above-described computing device, which includes a program for executing any of the methods provided in the embodiments of the present application.

The computer storage media may be any available media or data storage device that can be accessed by a computer, including, but not limited to, magnetic storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), and semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), etc.

The method provided by the embodiment of the application can be applied to the terminal equipment and also can be applied to the network equipment.

The Terminal device may also be referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (RAN), or the like, and may optionally be capable of communicating with one or more core networks via a radio access network (Radio Access Network, RAN), for example, the Terminal may be a Mobile phone (or "cellular" phone), or a computer with Mobile properties, or the like, for example, the Terminal may also be a portable, pocket, hand-held, computer-built-in, or vehicle-mounted Mobile device.

The network device may be a base station (e.g., an access point) that refers to a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminals. The base station may be configured to inter-convert the received air frames with IP packets as a router between the wireless terminal and the rest of the access network, which may include an Internet Protocol (IP) network. The base station may also coordinate attribute management for the air interface. For example, the base station may be a base station (BTS, base Transceiver Station) in GSM or CDMA, a base station (NodeB) in WCDMA, or an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in LTE, which is not limited in this embodiment.

In summary, the embodiment of the present application provides how to determine the specific content of uplink transmission based on the overlapping relationship between the SRS resource set and the uplink channel, so as to avoid mutual interference between the SRS and the uplink channel and improve the uplink transmission performance.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. An uplink transmission method, characterized in that the method comprises:

determining a Sounding Reference Signal (SRS) resource set;

uplink transmission is carried out based on the overlapping condition of the SRS resource set and uplink channel resources;

the uplink transmission is performed based on the overlapping condition of the SRS resource set and the uplink channel resource, and specifically includes:

if the transmission symbol corresponding to the uplink channel includes at least one SRS transmission symbol in the SRS resource set, uplink transmission is performed in one of modes 1, 2, and 3:

mode 3, determining that the uplink channel is not mapped to be transmitted on the at least one SRS transmission symbol;

when the SRS frequency domain resource on the at least one SRS transmission symbol overlaps with the frequency domain resource on the at least one SRS transmission symbol of the uplink channel, the mode 1 specifically includes one of the following modes:

modes 1 to 3: if the frequency domain resource of the uplink channel on the at least one SRS transmission symbol is overlapped with the SRS frequency domain resource, adopting a mode 1-1 or a mode 1-2; if the frequency domain resource of the uplink channel on the at least one SRS transmission symbol is partially overlapped with the SRS frequency domain resource, further judging whether SRS transmission exists on the at least one SRS transmission symbol, and if so, adopting a mode 1-2; if not, then use mode 1-1;

2. The method of claim 1, wherein uplink transmission is performed based on an overlapping situation of the SRS resource set and uplink channel resources, specifically comprising:

3. The method of claim 1, wherein the mode 1 specifically comprises one of the following modes when the SRS frequency domain resources on the at least one SRS transmission symbol do not overlap with the frequency domain resources on the at least one SRS transmission symbol of the uplink channel:

4. The method according to claim 1, wherein the mode 2 specifically includes:

5. The method according to claim 1, wherein the mode 2 specifically includes:

6. The method according to any one of claims 1 to 5, further comprising:

7. The method according to any one of claims 1-5, wherein when the number of symbols or the number of resource blocks, RBs, or the number of resource elements, REs, that need to be reserved for SRS in the uplink channel exceeds a predetermined threshold, no resource reservation is performed for SRS, or only a part of SRS transmission symbols are reserved for resources.

8. The method according to any one of claims 1 to 5, wherein determining the set of sounding reference signal, SRS, resources specifically comprises:

9. The method according to any one of claims 1 to 5, wherein after determining the SRS resource set of the sounding reference signal, before uplink transmission based on an overlapping situation of the SRS resource set and uplink channel resources, the method further comprises:

10. An uplink transmission apparatus, comprising:

a memory for storing program instructions;

determining a Sounding Reference Signal (SRS) resource set;

11. The apparatus of claim 10, wherein uplink transmission based on an overlapping situation of the SRS resource set and uplink channel resources specifically comprises:

12. The apparatus of claim 10, wherein the mode 1 specifically comprises one of the following modes when an SRS frequency domain resource on the at least one SRS transmission symbol does not overlap with a frequency domain resource of the uplink channel on the at least one SRS transmission symbol:

13. The apparatus according to claim 10, wherein the mode 2 specifically includes:

14. The apparatus according to claim 10, wherein the mode 2 specifically includes:

15. The apparatus of any one of claims 10 to 14, wherein the processor is further configured to:

16. The apparatus according to any one of claims 10-14, wherein when the number of symbols or the number of resource blocks, RBs, or the number of resource elements, REs, that need to be reserved for SRS in the uplink channel exceeds a predetermined threshold, no resource reservation is performed for SRS, or only a part of SRS transmission symbols is reserved for resources.

17. The apparatus according to any one of claims 10-14, wherein determining the set of sounding reference signal, SRS, resources specifically comprises:

18. The apparatus of any one of claims 10 to 14, wherein the processor is further configured to:

19. An uplink transmission apparatus, comprising:

a second unit, configured to perform uplink transmission based on an overlapping situation of the SRS resource set and an uplink channel resource;

20. A communication system, comprising:

a base station, configured to determine a sounding reference signal SRS resource set, send configuration information of the SRS resource set to a terminal, and perform uplink transmission based on an overlapping condition of the SRS resource set and uplink channel resources, where the receiving includes receiving an uplink channel and/or SRS;

The terminal is used for determining an SRS resource set according to the configuration information, and carrying out uplink transmission based on the overlapping condition of the SRS resource set and uplink channel resources, wherein the uplink transmission comprises the step of sending an uplink channel and/or SRS;

21. A computer-readable storage medium storing computer-executable instructions for causing a computer to perform the method of any one of claims 1 to 9.