CN110149715B

CN110149715B - Information indication method, PT-RS transmission method and device

Info

Publication number: CN110149715B
Application number: CN201810151894.2A
Authority: CN
Inventors: 李辉; 黄秋萍; 高秋彬; 拉盖施; 陈润华
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-02-14
Filing date: 2018-02-14
Publication date: 2023-01-10
Anticipated expiration: 2038-02-14
Also published as: CN110149715A

Abstract

The application discloses an information indication method, a PT-RS transmission method and a PT-RS transmission device. In the information indication method, a base station selects s SRS resources from N SRS resources by measuring SRS sent by a terminal in the N SRS resources, and allocates s demodulation reference signal DMRS ports to the s SRS resources; and the base station determines the resource indication states of the s SRS resources and the port indication states of the s DMRS ports according to a preset mapping rule between the DMRS ports and the phase tracking reference signal PT-RS ports or according to a preset PT-RS port indication rule, and indicates the resource indication states of the s SRS resources and the port indication states of the s DMRS ports to the terminal.

Description

Information indication method, PT-RS transmission method and device

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to an information indication method, a phase-tracking reference signals (PT-RS) transmission method, and an apparatus thereof.

Background

In a fifth generation radio access technology (5G NR) system, uplink transmission includes a codebook-based transmission scheme and a non-codebook-based transmission scheme. When performing uplink transmission, a Physical Uplink Shared Channel (PUSCH) of a terminal may use one or more data layers for transmission, and in order to implement data demodulation, each data layer corresponds to a demodulation reference signal (DMRS) port. When the system is configured with the PT-RS for phase noise tracking, the PT-RS port needs to be associated with a certain DMRS port, namely the PT-RS port transmits in a data layer where the DMRS port is located, and the same precoding as that of the DMRS port is used. In order to guarantee the transmission and demodulation performance of the PT-RS, the PT-RS needs to transmit in the data layer with the strongest channel quality, i.e., associated with the DMRS port corresponding to this data layer.

For a non-codebook uplink transmission mode, a terminal determines precoding by itself, and performs beamforming transmission on one or more Sounding Reference Signal (SRS) resources by using the precoding, wherein each SRS resource comprises an SRS port. A base station (such as a gNB) selects one or more SRS resources by measuring the channel quality of different SRS resources, and allocates a DMRS port to each selected SRS resource. The SRS resource selected by the gNB and the allocated DMRS port are both notified to the terminal through Downlink Control Information (DCI) signaling. When the gNB configuration uses the PT-RS to perform phase noise tracking, how the corresponding relation between the PT-RS and the DMRS port indicates does not have a solution at present.

Disclosure of Invention

The embodiment of the application provides an information indication method and device.

In a first aspect, an information indication method is provided, where the method includes: a base station selects s SRS resources from N SRS resources through measuring SRS transmitted by a terminal in the N SRS resources, and allocates s DMRS ports to the s SRS resources, wherein one SRS resource corresponds to one DMRS port; and the base station determines the resource indication states of the s SRS resources and the port indication states of the s DMRS ports according to a preset mapping rule between the DMRS ports and the PT-RS ports or according to a preset PT-RS port indication rule, and indicates the resource indication states of the s SRS resources and the port indication states of the s DMRS ports to the terminal. The resource indication states of the s SRS resources are used for indicating the s SRS resources and the arrangement sequences thereof, and the port indication states of the s DMRS ports are used for indicating the s DMRS ports and the arrangement sequences thereof. N, s are each integers greater than or equal to 1, and s is less than or equal to N.

According to the embodiment, the base station can indicate the association relationship between the PT-RS port and the DMRS port to the terminal through the resource indication state and the port indication state, so that the terminal can send the PTRS by using the data layer corresponding to the indicated DMRS port according to the association relationship. The source indication state and the port indication state indicated by the base station to the terminal are determined according to the SRS measurement result and the preset mapping rule between the DMRS port and the PT-RS port, or according to the SRS measurement result and the preset PT-RS port indication rule, so that the PT-RS can transmit on a data layer meeting the set requirement by setting a reasonable rule.

In one possible implementation manner, the mapping rule between the DMRS port and the PT-RS port is: one PT-RS port corresponds to a DMRS port meeting the requirement of a set index value, and the DMRS port is mapped to an SRS port corresponding to an SRS resource meeting the requirement of set channel quality.

According to the mapping rule defined in the above embodiment, a DMRS port meeting a set index value requirement may be mapped to an SRS port corresponding to an SRS resource meeting a set channel quality requirement, so that a PT-RS associated with the DMRS port may be transmitted on a data layer meeting the set channel quality requirement.

In a possible implementation manner, the DMRS port meeting the requirement for setting the index value is a DMRS port with a smallest index value in a DMRS port group allocated by the base station, and the SRS resource meeting the requirement for setting the channel quality is an SRS resource with a best channel quality among SRS resources selected by the base station.

According to the mapping rule defined in the foregoing embodiment, the DMRS port with the smallest index value may be mapped to the SRS port corresponding to the SRS resource with the best channel quality, so that the PT-RS associated with the DMRS port may be transmitted on the data layer with the best channel quality.

In a possible implementation manner, the preset PT-RS port indication rule is: and the DMRS port corresponding to the PT-RS port i is indicated by the DMRS port corresponding to the kth (i) SRS resource indicated by the resource indication state, or indicated by the kth (i) DMRS port indicated by the port indication state. Wherein k (i) is system predefined.

According to the indication rule defined in the above embodiment, the PT-RS port i may be indicated by the DMRS port corresponding to the kth (i) SRS resource indicated by the resource indication state, or the PT-RS port may be indicated by the kth (i) DMRS port indicated by the port indication state.

In a possible implementation manner, the s SRS resources correspond to a plurality of different resource indication states, and the s DMRS ports correspond to one port indication state. In this case, the determining, by the base station, the resource indication states of the s SRS resources and the port indication states of the s DMRS ports according to a preset mapping rule between the DMRS ports and the PT-RS ports includes: and the base station selects one resource indication state from a plurality of different resource indication states corresponding to the s SRS resources according to the preset mapping rule between the DMRS port and the PT-RS port and the arrangement position of the DMRS port meeting the set index value requirement and indicated by the port indication states corresponding to the s DMRS ports in the s DMRS ports, so that the DMRS port meeting the set index value requirement corresponds to the SRS resource meeting the set channel quality requirement and indicated by the selected resource indication state.

In a possible implementation manner, the s SRS resources correspond to a plurality of different resource indication states, and the s DMRS ports correspond to one port indication state. In this case, the determining, by the base station, the resource indication states of the s SRS resources and the port indication states of the s DMRS ports according to a preset PT-RS port indication rule includes: and the base station selects one resource indication state from a plurality of different resource indication states corresponding to the s SRS resources according to the SRS measurement result and a preset PT-RS port indication rule, so that the DMRS port corresponding to the kth (i) SRS resource indicated by the resource indication state is the DMRS port corresponding to the PT-RS port i.

In a possible implementation manner, the s SRS resources correspond to one resource indication state, and the s DMRS ports correspond to a plurality of different port indication states. In this case, the determining, by the base station, the resource indication states of the s SRS resources and the port indication states of the s DMRS ports according to a preset mapping rule between the DMRS ports and the PT-RS ports includes: and the base station selects one port indication state from a plurality of different port indication states corresponding to the s DMRS ports according to the preset mapping rule between the DMRS port and the PT-RS port and the arrangement position of the SRS resource which meets the set channel quality requirement and is indicated by the resource indication states corresponding to the s SRS resources in the s SRS resources, so that the SRS resource which meets the set channel quality requirement corresponds to the DMRS port which meets the set index value requirement and is indicated by the selected port indication state.

In a possible implementation manner, the s SRS resources correspond to one resource indication state, and the s DMRS ports correspond to a plurality of different port indication states. In this case, the determining, by the base station, the resource indication states of the s SRS resources and the port indication states of the s DMRS ports according to a preset PT-RS port indication rule includes: and the base station selects one port indication state from a plurality of different port indication states corresponding to the s DMRS ports according to the SRS measurement result and a preset PT-RS port indication rule, so that the kth (i) DMRS port indicated by the port indication state is the DMRS port corresponding to the PT-RS port i.

In one possible implementation, the resource indication states of the s SRS resources are predefined; and/or the port indication status of the s DMRS ports is predefined.

In a second aspect, a base station is provided, which may include: the terminal comprises an SRS measurement module and a receiving module, wherein the SRS measurement module is used for measuring the SRS sent by the terminal in N sounding reference signal SRS resources and selecting s SRS resources from the N SRS resources, wherein N, s is an integer greater than or equal to 1, and s is less than or equal to N; the DMRS port allocation module is used for allocating s demodulation reference signal DMRS ports for the s SRS resources, and one SRS resource corresponds to one DMRS port; a determining module, configured to determine resource indication states of the s SRS resources and port indication states of the s DMRS ports according to a mapping rule between a preset DMRS port and a phase tracking reference signal PT-RS port or according to a preset PT-RS port indication rule, where the resource indication states of the s SRS resources are used to indicate the s SRS resources and their arrangement order, and the port indication states of the s DMRS ports are used to indicate the s DMRS ports and their arrangement order; and the indicating module is used for indicating the resource indicating states of the s SRS resources and the port indicating states of the s DMRS ports to the terminal.

In a third aspect, a base station is provided, including: the system comprises a processor, a memory and a transceiver, wherein the processor, the memory and the transceiver are connected through a bus, and the transceiver is used for transmitting and receiving information according to the control of the processor. The processor is configured to read a program in the memory and execute the method of any of the first aspect.

In a fourth aspect, there is provided a computer-readable storage medium having stored thereon computer-executable instructions for causing the computer to perform the method of any of the above first aspects.

The embodiment of the application also provides a PT-RS transmission method and a PT-RS transmission device.

In a fifth aspect, there is provided a PT-RS transmission method, the method including: a terminal receives resource indication states of s SRS resources and port indication states of s DMRS ports indicated by a base station; the terminal determines SRS resources corresponding to the DMRS ports meeting the requirement of the set index value in the SRS resources indicated by the resource indication state according to preset mapping rules between the DMRS ports and PT-RS ports and the DMRS ports meeting the requirement of the index value in the DMRS ports indicated by the port indication state; and the terminal sends the PT-RS on the data layer corresponding to the SRS resource meeting the set channel quality requirement. The SRS resource corresponding to the DMRS port meeting the requirement of the set index value meets the requirement of the set channel quality; the resource indication states of the s SRS resources are used for indicating the s SRS resources and the arrangement sequence thereof, the port indication states of the s DMRS ports are used for indicating the s DMRS ports and the arrangement sequence thereof, the s SRS resources correspond to the s DMRS ports one to one, and s is an integer greater than or equal to. After the terminal receives the resource indication states of the s SRS resources and the port indication states of the s DMRS ports indicated by the base station, the DMRS ports corresponding to the PT-RS ports and the SRS resources corresponding to the PT-RS ports can be determined according to the preset PT-RS port indication rules and the resource indication states and the port indication states, and the SRS resources meet the requirement of the set channel quality.

In one possible implementation, the sending the PT-RS includes: and sending the PT-RS by using the precoding corresponding to the SRS resource meeting the set channel quality requirement.

In a possible implementation manner, the DMRS port meeting the requirement of setting the index value is the DMRS port with the smallest index value, and the SRS resource meeting the requirement of setting the channel quality is the SRS resource with the best channel quality.

In a possible implementation manner, the preset PT-RS port indication rule is: the DMRS port corresponding to the PT-RS port i is indicated by the DMRS port corresponding to the kth (i) SRS resource indicated by the resource indication state or indicated by the kth (i) DMRS port indicated by the port indication state; the k (i) is predefined by the system.

In one possible implementation, the resource indication states of the s SRS resources are predefined; and/or port indication states of the s DMRS ports are predefined.

In a sixth aspect, a terminal is provided, which may include: a receiving module, configured to receive resource indication states of s SRS resources and port indication states of s DMRS ports, where the resource indication states of the s SRS resources are used to indicate the s SRS resources and their arrangement sequences, the port indication states of the s DMRS ports are used to indicate the s DMRS ports and their arrangement sequences, the s SRS resources and the s DMRS ports are in one-to-one correspondence, and s is an integer greater than or equal to s; the determining module is used for determining SRS resources corresponding to the DMRS ports meeting the set index value requirement in the SRS resources indicated by the resource indication state according to preset mapping rules between the DMRS ports and PT-RS ports and according to the DMRS ports meeting the index value requirement in the DMRS ports indicated by the port indication state, wherein the SRS resources corresponding to the DMRS ports meeting the set index value requirement meet the set channel quality requirement, or determining the DMRS ports corresponding to the PT-RS ports and the SRS resources corresponding to the PT-RS ports according to the resource indication state and the port indication state according to preset PT-RS port indication rules, wherein the SRS resources meet the set channel quality requirement; and a sending module, configured to send the PT-RS on the data layer corresponding to the SRS resource that meets the set channel quality requirement.

In a seventh aspect, a terminal is provided, including: the system comprises a processor, a memory and a transceiver, wherein the processor, the memory and the transceiver are connected through a bus, and the transceiver is used for transmitting and receiving information according to the control of the processor. The processor is configured to read a program in the memory and execute the method of any one of the above fifth aspects.

In an eighth aspect, there is provided a computer-readable storage medium having stored thereon computer-executable instructions for causing the computer to perform the method of any of the above fifth aspects.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture suitable for use in the embodiments of the present application;

fig. 2 is a schematic flow chart of information indication provided in an embodiment of the present application;

fig. 3 and 4 are schematic diagrams of PT-RS transmission flow provided by an embodiment of the present application, respectively;

fig. 5 is a schematic structural diagram of a base station according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a base station according to another embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal according to another embodiment of the present application.

Detailed Description

Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

(1) In the embodiments of the present application, the terms "network" and "system" are often used interchangeably, but those skilled in the art can understand the meaning of the terms.

(2) In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

(3) "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

Referring to fig. 1, a schematic diagram of a possible communication scenario provided in the embodiment of the present application is shown. As shown in fig. 1, a terminal 110 accesses a wireless network through a Radio Access Network (RAN) node 120 to acquire a service of an external network (e.g., the internet) through the wireless network or to communicate with other terminals through the wireless network.

Among them, a terminal is also called User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., and is a device providing voice and/or data connectivity to a user, for example, a handheld device with a wireless connection function, a vehicle-mounted device, etc. Currently, some examples of terminals are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (smart security), a wireless terminal in city (smart city), a wireless terminal in home (smart home), and the like.

The RAN is the part of the network that accesses the terminals to the wireless network. A RAN node (or device) is a node (or device) in a radio access network, which may also be referred to as a base station. Currently, some examples of RAN nodes are: a gbb, a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B, or home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wifi) Access Point (AP), etc. In addition, in one network configuration, the RAN may include a Centralized Unit (CU) node and a Distributed Unit (DU) node.

The communication architecture may be an access network architecture in a 5G system, an evolution version of a Long Term Evolution (LTE) system, or other Orthogonal Frequency Division Multiplexing (OFDM) system or a discrete fourier transform-spread OFDM (DFT-S-OFDM) system.

The embodiments of the present application take a base station and a terminal as examples for description.

The network architecture described in the embodiment of the present application is for more clearly illustrating the technical solution of the embodiment of the present application, and does not constitute a limitation to the technical solution provided in the embodiment of the present application, and it is known by a person skilled in the art that as the network architecture evolves, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

Based on the communication system architecture, the terminal can send the PT-RS to perform the transmit end and receive end phase noise measurements.

The embodiment of the application provides a PT-RS transmission scheme based on a non-codebook uplink transmission mode. In the embodiment of the application, the PT-RS can be ensured to transmit in a data layer meeting the channel quality requirement according to the mapping rule of the PT-RS port and the DMRS port predefined by the system or the PT-RS port indication rule predefined by the system, so that the PT-RS transmission performance can be ensured.

Specific implementations of the embodiments of the present application are described in detail below.

In some embodiments of the present application, a mapping rule of PT-RS ports and DMRS ports may be predefined. The base station can determine the arrangement sequence of SRS resources required to be indicated to the terminal and the arrangement sequence of DMRS ports required to be indicated to the terminal according to the mapping rule, because the SRS resources correspond to the DMRS ports one by one, and each SRS resource corresponds to a PT-RS port, the base station can indicate the association relationship between the PT-RS ports and the DMRS ports to the terminal through the information, and the DMRS ports associated with the PT-RS ports are mapped to the SRS resources meeting the set channel quality requirement according to the mapping rule defined by the embodiment of the application; the terminal can determine the DMRS port associated with the PT-RS port according to the mapping rule, the SRS resource and the arrangement sequence thereof indicated by the base station, and the DMRS port and the arrangement sequence thereof, and further take the data layer where the SRS resource (or the SRS port) mapped by the DMRS port is located as the data layer used for transmitting the PT-RS.

Specifically, the mapping rule between the DMRS port and the PT-RS port may be defined as: one PT-RS port corresponds to a DMRS port meeting the requirement of a set index value, and the DMRS port is mapped to an SRS port corresponding to an SRS resource meeting the requirement of set channel quality.

Optionally, the DMRS port meeting the requirement for setting the index value is a DMRS port with a minimum index value, and the SRS resource meeting the requirement for setting the channel quality is an SRS resource with a best channel quality.

For example, the base station measures the SRS transmitted by the terminal in N SRS resources, selects s SRS resources (s is an integer greater than or equal to 1) with better channel quality from the SRS resources according to the measurement result, allocates DMRS ports to the s SRS resources (the SRS resources correspond to the DMRS ports one to one), and then maps the DMRS port with the smallest index value among the s DMRS ports to the SRS resource with the best channel quality among the s SRS resources according to the mapping rule, and indicates the corresponding relationship to the terminal. On the terminal side, the terminal may determine, according to the above correspondence indicated by the base station, and according to the SRS resource to which the DMRS port with the smallest index value is mapped, that a PT-RS port (the correspondence between the SRS resource and the PT-RS, which may be pre-configured) corresponding to the SRS resource is associated with the DMRS port with the smallest index value, so that the PT-RS may be sent through the PT-RS port on a data layer (a data layer in which the DMRS port is located, that is, a data layer in which the SRS resource to which the DMRS port is mapped is located) in which the DMRS port is located.

In the embodiment of the present application, in order to notify s SRS resources selected by a base station based on measurement, s DMRS ports allocated to the s SRS resources, and a correspondence between the s SRS resources and the s DMRS ports to a terminal, an "SRS resource indication state (resource indication state for short)" and a "DMRS port indication state (port indication state for short)" are introduced.

The SRS resource indication state is used for indicating, for an SRS resource group, SRS resources included in the SRS resource group and an arrangement order thereof. For one SRS resource group, only one resource indication state may be defined (i.e., there is only one arrangement order of SRS resources in the SRS resource group), or a plurality of resource indication states may be defined (i.e., there are a plurality of arrangement orders of SRS resources in the SRS resource group). One SRS resource group includes one or more SRS resources. PR-RS ports corresponding to SRS resources in one SRS resource group are the same, and PT-RS ports corresponding to different SRS resource groups are different. That is, one SRS resource group may be formed corresponding to SRS resources of the same PT-RS port.

For example, if the index values of the SRS resources included in one SRS resource group are: SRS (sounding reference Signal) _n0 ,SRS _n1 ,…,SRS _ns-1 Then, the resource indication status corresponding to the SRS resource group may include:

resource indication state n: { SRS _n0 ,SRS _n1 ,…,SRS _ns-1 }

Resource indication state n +1: { SRS _n1 ,SRS _n0 ,…,SRS _ns-1 }

Where n and n +1 represent the identity or index of the resource indication state.

The DMRS port indication state is used for indicating, for a DMRS port group (one DMRS port group includes one or more DMRS ports), DMRS ports included in the DMRS port group and an arrangement order thereof. For one DMRS port group, only one port indication state may be defined (i.e., DMRS ports in the DMRS port group have only one permutation order), or a plurality of port indication states may be defined (i.e., DMRS ports in the DMRS port group have multiple permutation orders).

For example, if the index values of the DMRS ports included in one DMRS port group are: DMRS _0, DMRS_1, …, DMRS _ s-1, the port indication status corresponding to the DMRS port group may include:

port indication state m: { DMRS _0, DMRS_1, …, DMRS _ s-1}

Port indication state m +1: { DMRS _1, DMRS \0, …, DMRS _ s-1}

Where m and m +1 represent the port indication status identifier or index.

In this embodiment, the resource indication state corresponding to one SRS resource group may be predefined, and the port state indication corresponding to one DMRS port group may be predefined.

In some other embodiments of the present application, the PT-RS port indication rule may be preset.

Optionally, the preset PT-RS port indication rule may be: and the DMRS port corresponding to the PT-RS port i is indicated by the DMRS port corresponding to the kth (i) SRS resource indicated by the resource indication state. That is, in the SRS resource group indicated by the resource indication state sent by the base station to the terminal, the DMRS port corresponding to the kth (i) th SRS resource is associated with the PT-RS port i. Wherein, the "PT-RS port i" is used for identifying a PT-RS port with the number or index i, such as PT-RS port 0 or PT-RS port 1. K (i) represents a function or mapping rule of i, k (i) being predefined by the system.

Optionally, the preset PT-RS port indication rule may also be: and the DMRS port corresponding to the PT-RS port i is indicated by the kth (i) DMRS port indicated by the port indication state sent to the terminal by the base station. That is, PT-RS port i is associated with the kth (i) DMRS port indicated by the port indication status. Wherein k (i) represents a function or mapping rule of i, k (i) being predefined by the system.

Referring to fig. 2, a schematic diagram of an information indication process provided in the embodiment of the present application is shown. The procedure may be performed by a base station. According to the process, the information indicated by the base station to the terminal can be used for the terminal to perform PT-RS transmission.

As shown in fig. 2, the process may include:

s201: the base station measures the SRS sent by the terminal in the N SRS resources, and selects s SRS resources from the N SRS resources according to the measurement result.

Each SRS resource corresponds to one PT-RS port, N, s is an integer greater than or equal to 1, and s is less than or equal to N. Multiple SRS resources may correspond to the same PT-RS port.

In specific implementation, the terminal may determine precoding information of each SRS resource by itself, and the precoding information may be determined by channel reciprocity. After receiving the SRS transmitted by the terminal, the base station may select s SRS resources with stronger signal strength from the N SRS resources for transmitting the SRS according to the received signal strength, for example, reference Signal Receiving Power (RSRP). The selected SRS resource has better channel quality.

S202: and the base station allocates s DMRS ports for the selected s SRS resources, and one SRS resource corresponds to one DMRS port.

And the s DMRS ports form a DMRS port group.

S203: and the base station determines the resource indication states of the s SRS resources and the port indication states of the s DMRS ports according to a preset mapping rule between the DMRS ports and the PT-RS ports or according to a preset PT-RS port indication rule.

According to the predefined SRS resource indication status and the specific case of the DMRS port indication status, S203 may include the following cases:

case 1: the s SRS resources correspond to a plurality of different resource indication states, and the s DMRS ports correspond to one port indication state.

For the case 1, since the s SRS resources selected by the base station correspond to a plurality of different resource indication states, that is, there are a plurality of ordering manners, and the s DMRS ports allocated to the SRS resources correspond to only one port indication state, that is, there is only one ordering manner, a resource indication state can be selected from the plurality of resource indication states according to the only one port indication state corresponding to the s DMRS ports, in combination with the preset mapping rule between the DMRS ports and the PT-RS ports or the PT-RS port indication rule.

Specifically, in some embodiments, the base station selects one resource indication state from a plurality of different resource indication states corresponding to the s SRS resources according to a preset mapping rule between the DMRS ports and the PT-RS ports and according to an arrangement position, in the s DMRS ports, of a DMRS port that meets a set index value requirement and is indicated by a port indication state corresponding to the s DMRS ports, so that the DMRS port that meets the set index value requirement corresponds to an SRS resource that meets the set channel quality requirement and is indicated by the selected resource indication state, so that the PT-RS port corresponds to the DMRS port that meets the set index value requirement and is mapped to an SRS port corresponding to the SRS resource that meets the set channel quality requirement, that is, the DMRS port that meets the set index value requirement is associated with the PT-RS port corresponding to the SRS resource that meets the set channel quality requirement.

In other embodiments, the base station determines SRS resources corresponding to each PT-RS port and DMRS port indication states of the s SRS resources, wherein each SRS resource corresponds to one DMRS port in the DMRS port indication states. And the base station selects one resource indication state from a plurality of different resource indication states corresponding to the s SRS resources according to a preset PT-RS port indication rule and the determined DMRS port indication state. And enabling the DMRS port corresponding to the kth (i) th SRS resource indicated by the resource indication state to be the DMRS port corresponding to the PT-RS port i, namely enabling the SRS resource corresponding to the DMRS port corresponding to the PT-RS port i to meet the set channel quality requirement.

Case 2: the s SRS resources correspond to one resource indication state, and the s DMRS ports correspond to a plurality of different port indication states.

For the case 2, since the s SRS resources selected by the base station correspond to a unique resource indication state, that is, only one ordering manner exists, and the s DMRS ports allocated to the SRS resources correspond to a plurality of port indication states, that is, a plurality of ordering manners exist, a port indication state can be selected from the plurality of port indication states according to the unique resource indication state corresponding to the s SRS resources, in combination with a preset mapping rule between the DMRS port and the PT-RS port or a preset PT-RS port indication rule.

Specifically, in some embodiments, according to the preset mapping rule between the DMRS port and the PT-RS port, and according to the arrangement position, in the s SRS resources, of the SRS resources meeting the set channel quality requirement and indicated by the resource indication states corresponding to the s SRS resources, the base station selects one port indication state from a plurality of different port indication states corresponding to the s SRS ports, so that the SRS resources meeting the set channel quality requirement correspond to the DMRS port meeting the set index value requirement and the DMRS port meeting the set channel quality requirement and is mapped to the SRS port corresponding to the SRS resource meeting the set channel quality requirement, that is, the DMRS port meeting the set index value requirement is associated with the PT-RS port corresponding to the SRS resource meeting the set channel quality requirement.

In other embodiments, the base station determines resource indication states corresponding to the selected s SRS resources, and determines SRS resources corresponding to each PT-RS port. The base station selects a port indication state from a plurality of port indication states according to a preset PT-RS port indication rule and the determined SRS resource indication state, so that the kth (i) th DMRS port indicated by the port indication state is the DMRS port corresponding to the PT-RS port i, namely, the SRS resource corresponding to the DMRS port corresponding to the PT-RS port i meets the set channel quality requirement.

Case 3: the s SRS resources correspond to a plurality of resource indication states, and the s DMRS ports correspond to a plurality of port indication states.

For case 3, two approaches may be employed:

the method comprises the following steps: first, the base station may select one port indication state from a plurality of port indication states corresponding to s DMRS ports, and the following processing is similar to the processing method in case 1 described above and is not repeated here.

The method 2 comprises the following steps: first, the base station may select one resource indication state from a plurality of resource indication states corresponding to s SRS resources, and the following processing is similar to the processing method in case 2 above, and will not be repeated here.

Case 4: the s SRS resources correspond to a resource indication state, and the s DMRS ports correspond to a port indication state.

For case 4, the s SRS resources correspond to one resource indication state, and the s DMRS ports correspond to one port indication state, that is, only one unique ordering manner exists in the s SRS resources and the s DMRS ports, so that the base station can only select and determine to feed back the resource indication state and the port indication state.

S204: and the base station indicates the resource indication states of the s SRS resources and the port indication states of the s DMRS ports to the terminal.

In this step, optionally, the base station may send the resource indication state and the port indication state to the terminal through DCI signaling.

Optionally, the resource indication status sent by the base station may be an index of the resource indication status, so as to reduce signaling overhead.

Optionally, the port indication status sent by the base station may be an index of the port indication status, so as to reduce signaling overhead.

After receiving the resource indication state and the port indication state sent by the base station, the terminal can determine a data layer for transmitting the PT-RS according to the SRS resource indicated by the resource indication state and the corresponding relation between the DMRS ports indicated by the port indication state, and the preset mapping rule between the DMRS ports and the PT-RS ports or the preset PT-RS port indication rule, and transmit the PT-RS in the data layer.

Referring to fig. 3, a PT-RS transmission flow chart according to an embodiment of the present disclosure is shown. The flow may be performed by the terminal. According to the procedure, the terminal can perform the uplink transmission of the PT-RS according to the information indicated by the base station.

As shown in fig. 3, the process may include:

s301: and the terminal receives resource indication states of s SRS resources and port indication states of s DMRS ports indicated by the base station.

For the resource indication states of the s SRS resources and the indication methods of the port indication states of the s DMRS ports, reference may be made to the foregoing embodiments.

S302: and the terminal determines SRS resources corresponding to the DMRS ports meeting the requirement of the set index value in the SRS resources indicated by the resource indication state according to preset mapping rules between the DMRS ports and the PT-RS ports and the DMRS ports meeting the requirement of the index value in the DMRS ports indicated by the port indication state.

And the SRS resource corresponding to the DMRS port meeting the requirement of the set index value meets the requirement of the set channel quality.

S303: and the terminal sends PT-RS on the data layer corresponding to the SRS resource meeting the set channel quality requirement.

Optionally, in this step, the terminal may send the PT-RS using the precoding corresponding to the SRS resource that meets the set channel quality requirement.

As can be seen from the above description, in the embodiment of the present application, since the mapping rule between the DMRS port and the PT-RS port is preset, that is, the PT-RS port corresponding to the DMRS port meeting the requirement of the set index value is specified, and is the PT-RS port corresponding to the SRS resource meeting the requirement of the set channel quality. Therefore, when the base station indicates the SRS resources and the DMRS ports to the terminal, the SRS resources and/or the DMRS ports can be correspondingly sequenced according to the mapping rule, so that the terminal can determine the SRS resources corresponding to the DMRS ports meeting the set index value requirement, and then the data layer corresponding to the SRS resources is used for PT-RS transmission. The SRS resource meets the set channel quality requirement, so that the PT-RS can transmit in a data layer meeting the channel quality requirement, and the transmission performance of the PT-RS can be improved.

Referring to fig. 4, a diagram of a PT-RS transmission flow according to another embodiment of the present application is provided. The flow may be performed by the terminal. According to the process, the terminal can perform the uplink transmission of the PT-RS according to the information indicated by the base station.

As shown in fig. 4, the process may include:

s401: and the terminal receives resource indication states of s SRS resources and port indication states of s DMRS ports indicated by the base station.

S402: and the terminal determines the DMRS port corresponding to the PT-RS port and the SRS resource corresponding to the DMRS port according to a preset PT-RS port indication rule and the resource indication state and the port indication state. The SRS resources meet a set channel quality requirement.

S403: and the terminal sends the PT-RS on the data layer corresponding to the SRS resource meeting the set channel quality requirement.

As can be seen from the foregoing description, in the embodiment of the present application, since the PT-RS port indication rule is preset, that is, the DMRS port corresponding to the PT-RS port i is indicated by the DMRS port corresponding to the kth (i) SRS resource indicated by the resource indication state, or is indicated by the kth (i) DMRS port indicated by the port indication state. Therefore, when the base station indicates the SRS resources and the DMRS ports to the terminal, the SRS resources and/or the DMRS ports can be correspondingly sequenced according to the indication rule, so that the terminal uses the data layer corresponding to the SRS resources indicated by the gNB end to carry out PT-RS transmission. The SRS resource meets the set channel quality requirement, so that the PT-RS can be transmitted in a data layer meeting the channel quality requirement, and the transmission performance of the PT-RS can be improved.

In order to more clearly understand the above embodiments of the present application, the DMRS ports meeting the requirement of setting the index value are taken as DMRS ports with the minimum index value among the DMRS ports allocated to the base station, and the SRS resources meeting the requirement of setting the channel quality are taken as SRS resources with the best channel quality among the SRS resources selected by the base station, and a detailed description is given to the embodiments of the present application in combination with a specific implementation scenario.

Scene one

In scenario one, the SRS resource indication status predefined by the system may be as shown in table 1. Taking 1 SRS resource group as an example, the SRS resources in the SRS resource group include: SRS (sounding reference Signal) _n0 ,SRS _n1 ,…,SRS _ns-1 . 3 kinds of sequential resource index arrangements are predefined for the SRS resource group, that is, 3 resource indication states are predefined.

TABLE 1 SRS resource indication states

SRS resource indication status	Resource indexing
		…	…
n	{SRS _n0 ,SRS _n1 ,…,SRS _ns-1 }
		n+1	{SRS _n1 ,SRS _n0 ,…,SRS _ns-1 }
n+2	{SRS _n2 ,SRS _n1 ,SRS _n0 ,…,SRS _ns-1 }
		…	…

The system predefined DMRS port indication states are shown in table 2. Taking 3 DMRS port groups as an example, each DMRS port group includes s DMRS ports. Only 1 port index ordering is defined per DMRS port group, i.e. only 1 port indication state is defined per DMRS port group.

TABLE 2 DMRS Port indication status

DMRS port indication status	DMRS port index
		…	…
m	{DMRS_0,DMRS_1,…,DMRS_s-1}
		m+1	{DMRS_1,DMRS_2,…,DMRS_s}
m+2	{DMRS_2,DMRS_3,…,DMRS_s+1}
		…	…

The gNB configures N SRS resources for the terminal, and indexes of the N SRS resources are respectively expressed as { SRS ₀ ,SRS ₁ ,…,SRS _N-1 }. Each SRS resource contains 1 SRS port. And the gNB indicates a PT-RS port index for each SRS resource, and the SRS resources with the same PT-RS port index share the same PT-RS port. In a scenario one, the indexes of the PT-RS ports of the N SRS resources are all 0, and at most 1 PT-RS port may be transmitted in uplink.

According to the process shown in fig. 2, the process flow at the base station side includes:

in S201, the terminal determines precoding information of each SRS resource in the N SRS resources by itself, where the precoding information may be determined by channel reciprocity. And after the terminal performs precoding processing on the SRS sent by each SRS port in the N SRS ports by using the corresponding precoding information, the terminal sends the SRS on the corresponding SRS port. The gNB measures N SRS resources, and selects s SRS resources according to the measurement result, wherein the index value is { SRS _n0 ,SRS _n1 ,…,SRS _ns-1 Where the index value is SRS _n1 The channel quality of the SRS resource of (3) is the best.

In S202, the base station allocates S DMRS ports for the S SRS resources, and the indexes of the S DMRS ports comprise { DMRS _0, DMRS _1, …, DMRS _ S-1}.

In S203, only one port indication state m exists according to the DMRS port group { DMRS _0, DMRS _1, …, DMRS _ S-1} allocated to table 2, gnb, where DMRS _0 is the smallest index value. The gNB determines that the DMRS port with the minimum index value should correspond to the SRS resource with the best channel quality according to the preset mapping rule between the DMRS port and the PT-RS port, so that the gNB determines the SRS resource group { SRS resource group according to the table 1 _n0 ,SRS _n1 ,…,SRS _ns-1 The resource indication state of (1) } is n +1, so that the minimum index value DMRS _0 and the index SRS of the SRS resource with the best channel quality are enabled to be the same _n1 Correspond to therebyThe PT-RS can be guaranteed to be transmitted on the data layer with the best channel quality.

In S204, the gNB transmits the determined SRS resource indication state and DMRS port indication state to the terminal through the DCI.

According to the flow shown in fig. 3, the terminal-side processing flow includes:

in S301, the terminal receives a resource indication state n +1 and a port indication state m sent by the base station.

In S302, the terminal determines SRS resource group { SRS resource group according to the resource indication state n +1 and the port indication state m notified by the gNB _n1 ,SRS _n0 ,…,SRS _ns-1 And a DMRS port group { DMRS _0, DMRS _1, …, DMRS _ s-1}, wherein SRS resources in the SRS resource group correspond to DNRS ports in the DMRS port group one by one, and the SRS resource index corresponding to the DMRS port with the minimum index value is SRSn1. According to the preset mapping rule between the DMRS ports and the PT-RS ports, the index value corresponding to the DMRS port with the minimum index value is the SRS _n1 Is the SRS resource with the best channel quality, and therefore the index value is the SRS resource _n1 And on the data layer corresponding to the SRS resource, precoding information corresponding to the SRS resource is used for precoding the PT-RS and then transmitting the PT-RS.

Scene two

In scenario two, the SRS resource indication status predefined by the system can be as shown in table 3. Taking 3 SRS resource groups as an example, each SRS resource group includes s SRS resources. Only one index ordering is defined for each group of SRS resources, i.e. only 1 resource indication state is defined for each group of SRS resources.

TABLE 3 SRS resource indication status

SRS resource indication status	Resource indexing
		…	…
n	{SRS _n0 ,SRS _n1 ,…,SRS _ns-1 }
		n+1	{SRS _n1 ,SRS _n2 ,…,SRS _ns }
n+2	{SRS _n2 ,SRS _n3 ,…,SRS _ns+1 }
		…	…

The system predefined DMRS port indication states are shown in table 4. Taking 1 DMRS port group as an example, the DMRS port group includes s DMRS ports, and indexes of the DMRS ports are: DMRS _0, DMRS_1, …, DMRS _ s-1. 4 port index orderings are defined for the DMRS port group, i.e., 4 port indication states are defined for the DMRS port group.

TABLE 4 DMRS Port indication status

DMRS port indication status	DMRS port index
		…	…
m	{DMRS_0,DMRS_1,…,DMRS_s-1}
		m+1	{DMRS_1,DMRS_0,…,DMRS_s-1}
m+2	{DMRS_2,DMRS_1,DMRS_0,…,DMRS_s-1}
		m+3	{DMRS_3,DMRS_0,DMRS_1,…,DMRS_s-1}
…	…

The gNB configures N SRS resources for the terminal, and indexes of the N SRS resources are respectively expressed as { SRS0, SRS1, …, SRSN-1}. Each SRS resource contains 1 SRS port. And the gNB indicates a PT-RS port index for each SRS resource, and the SRS resources with the same PT-RS port index share the same PT-RS port. In a second scenario, the indexes of the PT-RS ports of the N SRS resources are all 0, and the uplink may transmit 1 PT-RS port at most.

in S201, the terminal determines precoding information of each SRS resource in the N SRS resources by itself, where the precoding information may be determined by channel reciprocity. And after the terminal performs precoding processing on the SRS sent by each SRS port in the N SRS ports by using the corresponding precoding information, the terminal sends the SRS on the corresponding SRS port. The gNB measures N SRS resources, and selects s SRS resources according to the measurement result, wherein the index value is { SRS _n0 ,SRS _n1 ,…,SRS _ns-1 Where the index value is SRS _n1 The channel quality of the SRS resource of (1) is the best.

In S203, the group of SRS resources { SRS } selected by gNB according to Table 3 _n0 ,SRS _n1 ,…,SRS _ns-1 There is only one resource indication state n. And in the DMRS port group { DMRS _0, DMRS _1, … and DMRS _ s-1} allocated by gNB, the DMRS _0 is the minimum index value. The gNB determines that the DMRS port with the minimum index value should correspond to the SRS resource with the best channel quality according to the preset mapping rule between the DMRS port and the PT-RS port, so that the port indication state of the DMRS port group { DMRS _0, DMRS_1, …, DMRS _ s-1} is m +1 according to the table 4, so that the DMRS _0 with the minimum index value and the SRS resource with the best channel quality have the index SRS resource _n1 Accordingly, the PT-RS can be ensured to be transmitted on the data layer with the best channel quality.

in S301, the terminal receives the resource indication state n and the port indication state m +1 sent by the base station.

In S302, the terminal determines a set of SRS resources { SRS group according to the resource indication state n and the port indication state m +1 notified by the gNB _n0 ,SRS _n1 ,…,SRS _ns-1 And a DMRS port group { DMRS _1, DMRS _0, …, DMRS _ s-1}, wherein SRS resources in the SRS resource group correspond to the DMRS ports in the DMRS port group one by one, and the SRS resource index corresponding to the DMRS port with the minimum index value is SRS _n1 . According to the preset mapping rule between the DMRS port and the PT-RS port, the SRS resource with the index value SRSn1 corresponding to the DMRS port with the minimum index value is the SRS resource with the best channel quality, so that the terminal transmits the PT-RS after precoding processing is carried out on the PT-RS by using precoding information corresponding to the SRS resource on a data layer corresponding to the SRS resource with the index value SRSn1.

In order to more clearly understand the above embodiments of the present application, the DMRS port corresponding to the PT-RS port 0 is indicated by the DMRS port corresponding to the 1 st SRS resource indicated by the resource indication state, and the DMRS port corresponding to the PT-RS port 1 is indicated by the DMRS port corresponding to the 2 nd SRS resource indicated by the resource indication state, and the embodiments of the present application are described in detail below with reference to specific implementation scenarios.

The system predefined SRS resource indication state may be as shown in table 5. Taking 1 SRS resource group as an example, the SRS resources in the SRS resource group include: SRS (sounding reference Signal) _n0 ,SRS _n1 ,…,SRS _ns-1 . 3 kinds of sequential resource index arrangements are predefined for the SRS resource group, that is, 3 resource indication states are predefined.

TABLE 5 SRS resource indication status

The system predefined DMRS port indication states are shown in table 6. Taking 3 DMRS port groups as an example, each DMRS port group includes s DMRS ports. Only 1 port index ordering is defined per DMRS port group, i.e. only 1 port indication state is defined per DMRS port group.

TABLE 6 DMRS Port indication status

The gNB configures N SRS resources for the terminal, and indexes of the N SRS resources are respectively expressed as { SRS ₀ ,SRS ₁ ,…,SRS _N-1 }. Each SRS resource contains 1 SRS port. And the gNB indicates a PT-RS port index for each SRS resource, and the SRS resources with the same PT-RS port index share the same PT-RS port. Here, if the index of PT-RS ports of a part of the N SRS resources is 0 and the index of PT-RS ports of another part of the resources is 1, 2 PT-RS ports may be transmitted uplink.

in S201, the terminal determines precoding information of each SRS resource in the N SRS resources by itself, where the precoding information may be determined by channel reciprocity. And after the terminal performs precoding processing on the SRS sent by each SRS port in the N SRS ports by using the corresponding precoding information, the terminal sends the SRS on the corresponding SRS port. The gNB measures N SRS resources, and selects s SRS resources according to the measurement result, wherein the index value is { SRS _n0 ,SRS _n1 ,…,SRS _ns-1 }. The s SRS resources all have two different PT-RS port indexes, wherein, the SRS resource { SRS _n0 ,SRS _n1 ,…,SRS _nk-1 With PT-RS port index 0 _nk ,SRS _nk+1 ,…,SRS _ns-1 Have the same PT-RS port index 1. Wherein, { SRS _n0 ,SRS _n1 ,…,SRS _nk-1 The index of the SRS resource with the best channel quality in the proposal is the SRS resource _n1 ，{SRS _nk ,SRS _nk+1 ,…,SRS _ns-1 The index of the SRS resource with the best channel quality in the proposal is the SRS resource _nk+2 。

In S202, the base station allocates S DMRS ports for the S SRS resources, and the indexes of the S DMRS ports comprise { DMRS _0, DMRS_1, …, DMRS _ S-1}.

In S203, according to the preset PT-RS port indication rule, the 1 st SRS resource indicated by the resource indication state is the SRS resource corresponding to the PT-RS port 0 indicated by the gbb _n1 And the 2 nd SRS resource indicated by the resource indication state is the SRS resource SRS corresponding to the PT-RS port 1 _nk+2 Therefore, the base station determines the SRS resource group { SRS } according to Table 5 _n1 ,SRS _nk+2 ,SRS _n0 ,…,SRS _nk-1, SRS _nk ,SRS _nk+1 ,…,SRS _ns-1 The resource indication state of the PT-RS is n +1, thereby ensuring that the PT-RS is transmitted on the data layer with the best channel quality.

According to the flow shown in fig. 4, the terminal-side processing flow includes:

in S401, the terminal receives the resource indication state n +1 and the port indication state m sent by the base station.

In S402-S403, the terminal determines the SRS resource group { SRS resource group according to the resource indication state n +1 and the port indication state m indicated by the gNB _n1 ,SRS _nk+2 ,SRS _n0 ,…,SRS _nk-1, SRS _nk ,SRS _nk+1 ,…,SRS _ns-1 And a DMRS port group { DMRS _0, DMRS _1, …, DMRS _ s-1}, wherein the SRS resources in the SRS resource group correspond to the DMRS ports in the DMRS port group one by one. Mapping the PT-RS port 0 to DMRS _0 according to a preset PT-RS port indication rule, wherein the index value is SRS _n1 And on the data layer corresponding to the SRS resource, precoding information corresponding to the SRS resource is used for precoding the PT-RS and then transmitting the PT-RS. For PT-RS port 1, mapping to DMRS _1, at index value SRS _nk+2 And on the data layer corresponding to the SRS resource, precoding information corresponding to the SRS resource is used for precoding the PT-RS and then transmitting the PT-RS.

Based on the same technical concept, the embodiment of the present application further provides a base station, and the base station can implement the functions of the base station side in the foregoing embodiments.

Referring to fig. 5, a schematic structural diagram of a base station provided in the embodiment of the present application is shown. The base station may include: the device comprises an SRS measuring module 501, a DMRS port allocating module 502, a determining module 503 and an indicating module 504.

The SRS measurement module 501 is configured to select s SRS resources from the N SRS resources by measuring the SRS sent by the terminal in the N SRS resources. Wherein N, s are integers greater than or equal to 1, and s is less than or equal to N.

The DMRS port allocating module 502 is configured to allocate s demodulation reference signal DMRS ports to the s SRS resources, where one SRS resource corresponds to one DMRS port.

The determining module 503 is configured to determine resource indication states of the s SRS resources and port indication states of the s DMRS ports according to a mapping rule between a preset DMRS port and a phase tracking reference signal PT-RS port or according to a preset PT-RS port indication rule; the resource indication states of the s SRS resources are used for indicating the s SRS resources and the arrangement sequence thereof, and the port indication states of the s DMRS ports are used for indicating the s DMRS ports and the arrangement sequence thereof.

The indicating module 504 is configured to indicate, to the terminal, resource indication states of the s SRS resources and port indication states of the s DMRS ports.

Optionally, the mapping rule between the DMRS port and the PT-RS port is: one PT-RS port corresponds to a DMRS port meeting the requirement of setting an index value, and the DMRS port is mapped to an SRS port corresponding to an SRS resource meeting the requirement of setting channel quality.

Optionally, the DMRS port meeting the requirement for setting the index value is a DMRS port with a minimum index value in a DMRS port group allocated to the base station, and the SRS resource meeting the requirement for setting the channel quality is an SRS resource with a best channel quality among SRS resources selected by the base station.

Optionally, the preset PT-RS port indication rule is: the DMRS port corresponding to the PT-RS port i is indicated by the DMRS port corresponding to the kth (i) SRS resource indicated by the resource indication state or indicated by the kth (i) DMRS port indicated by the port indication state; the k (i) is predefined by the system.

Optionally, the s SRS resources correspond to a plurality of different resource indication states, and the s DMRS ports correspond to one port indication state. In this case, the determining module 503 is specifically configured to: and according to the preset mapping rule between the DMRS port and the PT-RS port and the arrangement position of the DMRS port which meets the requirement of the set index value and is indicated by the port indication state corresponding to the s DMRS ports in the s DMRS ports, selecting one resource indication state from a plurality of different resource indication states corresponding to the s SRS resources, so that the DMRS port which meets the requirement of the set index value corresponds to the SRS resource which meets the requirement of the set channel quality and is indicated by the selected resource indication state.

Optionally, the s SRS resources correspond to a plurality of different resource indication states, and the s DMRS ports correspond to one port indication state. In this case, the determining module 503 is specifically configured to: and according to the SRS measurement result and a preset PT-RS port indication rule, selecting one resource indication state from a plurality of different resource indication states corresponding to the s SRS resources, so that the DMRS port corresponding to the kth (i) SRS resource indicated by the resource indication state is the DMRS port corresponding to the PT-RS port i.

Optionally, the s SRS resources correspond to one resource indication state, and the s DMRS ports correspond to a plurality of different port indication states. In this case, the determining module 503 is specifically configured to: according to the preset mapping rule between the DMRS port and the PT-RS port and the arrangement positions, in the s SRS resources, of the SRS resources meeting the set channel quality requirement and indicated by the resource indication states corresponding to the s SRS resources, one port indication state is selected from a plurality of different port indication states corresponding to the s DMRS ports, and the SRS resources meeting the set channel quality requirement correspond to the DMRS ports meeting the set index value requirement and indicated by the selected port indication states.

Optionally, the s SRS resources correspond to one resource indication state, and the s DMRS ports correspond to a plurality of different port indication states. In this case, the determining module 503 is specifically configured to: and according to the SRS measurement result and a preset PT-RS port indication rule, selecting one port indication state from a plurality of different port indication states corresponding to the s DMRS ports, so that the kth (i) DMRS port indicated by the port indication state is the DMRS port corresponding to the PT-RS port i.

Optionally, resource indication states of the s SRS resources are predefined; and/or port indication states of the s DMRS ports are predefined.

Based on the same technical concept, the embodiment of the present application further provides a terminal, which can implement the functions of the terminal side in the foregoing embodiments.

Referring to fig. 6, a schematic structural diagram of a terminal provided in the embodiment of the present application is shown, where the terminal may include: a receiving module 601, a determining module 602, and a sending module 603.

The receiving module 601 is configured to receive resource indication states of s SRS resources and port indication states of s DMRS ports, which are indicated by a base station; the resource indication states of the s SRS resources are used for indicating the s SRS resources and the arrangement sequences of the S SRS resources, the port indication states of the s DMRS ports are used for indicating the s DMRS ports and the arrangement sequences of the S DMRS ports, the s SRS resources correspond to the s DMRS ports one by one, and s is an integer greater than or equal to.

The determining module 602 is configured to determine, according to a preset mapping rule between a DMRS port and a PT-RS port, an SRS resource corresponding to the DMRS port meeting the requirement for a set index value in SRS resources indicated by the resource indication state according to a DMRS port meeting the requirement for an index value in the DMRS ports indicated by the port indication state, where the SRS resource corresponding to the DMRS port meeting the requirement for the set index value meets the requirement for set channel quality; or, the determining module 602 determines, according to a preset PT-RS port indication rule, a DMRS port corresponding to the PT-RS port and SRS resources corresponding to the DMRS port according to the resource indication state and the port indication state, where the SRS resources meet a set channel quality requirement.

The sending module 603 is configured to send the PT-RS on the data layer corresponding to the SRS resource meeting the set channel quality requirement.

Optionally, the sending module 603 is specifically configured to: and sending the PT-RS by using the precoding corresponding to the SRS resource meeting the set channel quality requirement.

Optionally, the mapping rule between the DMRS port and the PT-RS port is: one PT-RS port corresponds to a DMRS port meeting the requirement of a set index value, and the DMRS port is mapped to an SRS port corresponding to an SRS resource meeting the requirement of set channel quality.

Optionally, the DMRS port meeting the requirement for setting the index value is the DMRS port with the smallest index value, and the SRS resource meeting the requirement for setting the channel quality is the SRS resource with the best channel quality.

Referring to fig. 7, a schematic structural diagram of a base station provided in the embodiment of the present application is shown, where the base station may include: a processor 701, a memory 702, a transceiver 703, and a bus interface.

The processor 701 is responsible for managing the bus architecture and general processing, and the memory 702 may store data used by the processor 701 in performing operations. The transceiver 703 is used for receiving and transmitting data under the control of the processor 701.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 701, and various circuits, represented by memory 702, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 701 is responsible for managing the bus architecture and general processing, and the memory 702 may store data used by the processor 701 in performing operations.

The process disclosed in the embodiments of the present invention may be applied to the processor 701, or implemented by the processor 701. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 701. The processor 701 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702 and completes the steps of the signal processing flow in combination with the hardware thereof.

Specifically, the processor 701 is configured to read a program in the memory 702 and execute the information indication procedure implemented by the base station.

Based on the same technical concept, the embodiment of the present application further provides a terminal, and the base station may implement the function of the terminal side in the foregoing embodiment.

Referring to fig. 8, a schematic structural diagram of a terminal provided in the embodiment of the present application is shown, where the terminal may include: a processor 801, a memory 802, a transceiver 803, and a bus interface.

The processor 801 is responsible for managing the bus architecture and general processing, and the memory 802 may store data used by the processor 801 in performing operations. The transceiver 803 is used for receiving and transmitting data under the control of the processor 801.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by the processor 801 and various circuits of the memory represented by the memory 802 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 801 is responsible for managing the bus architecture and general processing, and the memory 802 may store data used by the processor 801 in performing operations.

The processes disclosed in the embodiments of the present invention can be applied to the processor 801 or implemented by the processor 801. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 801. The processor 801 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software modules may be located in ram, flash, rom, prom, or eprom, registers, etc. as is well known in the art. The storage medium is located in the memory 802, and the processor 801 reads the information in the memory 802, and completes the steps of the signal processing flow in combination with the hardware thereof.

Specifically, the processor 801 is configured to read the program in the memory 802 and execute the PT-RS transmission procedure implemented by the terminal side.

Based on the same technical concept, the embodiment of the application also provides a computer readable storage medium. The computer-readable storage medium stores computer-executable instructions for causing the computer to execute the processes performed by the control terminal in the foregoing embodiments.

Based on the same technical concept, the embodiment of the application also provides a computer readable storage medium. The computer-readable storage medium stores computer-executable instructions for causing the computer to perform the processes performed by the member terminal in the foregoing embodiments.

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 flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

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 information indication method, comprising:

the base station selects s SRS resources from N SRS resources by measuring the SRS sent by the terminal in the N SRS resources; wherein N, s are integers greater than or equal to 1, respectively, and s is less than or equal to N;

the base station allocates s demodulation reference signal (DMRS) ports for the s SRS resources, and one SRS resource corresponds to one DMRS port;

the base station determines resource indication states of the s SRS resources and port indication states of the s DMRS ports according to a preset mapping rule between the DMRS ports and a phase tracking reference signal PT-RS port or according to a preset PT-RS port indication rule; the resource indication states of the s SRS resources are used for indicating the s SRS resources and the arrangement sequence thereof, and the port indication states of the s DMRS ports are used for indicating the s DMRS ports and the arrangement sequence thereof;

and the base station indicates the resource indication states of the s SRS resources and the port indication states of the s DMRS ports to the terminal.

2. The method of claim 1, wherein a mapping rule between the DMRS port and the PT-RS port is:

one PT-RS port corresponds to a DMRS port meeting the requirement of a set index value, and the DMRS port is mapped to an SRS port corresponding to an SRS resource meeting the requirement of set channel quality.

3. The method of claim 2, wherein the DMRS port meeting the requirement for the set index value is a DMRS port with a smallest index value in the DMRS port group allocated by the base station, and wherein the SRS resource meeting the requirement for the set channel quality is an SRS resource with a best channel quality among the SRS resources selected by the base station.

4. The method of claim 1, wherein the preset PT-RS port indication rule is:

the DMRS port corresponding to the PT-RS port i is indicated by the DMRS port corresponding to the kth (i) SRS resource indicated by the resource indication state or indicated by the kth (i) DMRS port indicated by the port indication state; the k (i) is predefined by the system.

5. The method of any of claims 1 to 4, wherein the s SRS resources correspond to a plurality of different resource indication states, and wherein the s DMRS ports correspond to one port indication state;

the base station determines resource indication states of the s SRS resources and port indication states of the s DMRS ports according to a preset mapping rule between the DMRS ports and the PT-RS ports, and the method comprises the following steps:

and the base station selects one resource indication state from a plurality of different resource indication states corresponding to the s SRS resources according to the preset mapping rule between the DMRS port and the PT-RS port and the arrangement position of the DMRS port meeting the set index value requirement and indicated by the port indication states corresponding to the s DMRS ports in the s DMRS ports, so that the DMRS port meeting the set index value requirement corresponds to the SRS resource meeting the set channel quality requirement and indicated by the selected resource indication state.

6. The method of any of claims 1 to 4, wherein the s SRS resources correspond to a plurality of different resource indication states, and wherein the s DMRS ports correspond to one port indication state;

the base station determines the resource indication states of the s SRS resources and the port indication states of the s DMRS ports according to a preset PT-RS port indication rule, and the method comprises the following steps:

and the base station selects one resource indication state from a plurality of different resource indication states corresponding to the s SRS resources according to the SRS measurement result and a preset PT-RS port indication rule, so that the DMRS port corresponding to the kth (i) SRS resource indicated by the resource indication state is the DMRS port corresponding to the PT-RS port i.

7. The method of any of claims 1 to 4, wherein the s SRS resources correspond to one resource indication state, and wherein the s DMRS ports correspond to a plurality of different port indication states;

and the base station selects one port indication state from a plurality of different port indication states corresponding to the s DMRS ports according to the preset mapping rule between the DMRS port and the PT-RS port and the arrangement position of the SRS resource which meets the set channel quality requirement and is indicated by the resource indication states corresponding to the s SRS resources in the s SRS resources, so that the SRS resource which meets the set channel quality requirement corresponds to the DMRS port which meets the set index value requirement and is indicated by the selected port indication state.

8. The method of any of claims 1 to 4, wherein the s SRS resources correspond to one resource indication state, the s DMRS ports correspond to a plurality of different port indication states;

and the base station selects one port indication state from a plurality of different port indication states corresponding to the s DMRS ports according to the SRS measurement result and a preset PT-RS port indication rule, so that the kth (i) DMRS port indicated by the port indication state is the DMRS port corresponding to the PT-RS port i.

9. The method of claim 1, wherein resource indication states of the s SRS resources are predefined; and/or

The port indication status of the s DMRS ports is predefined.

10. A method for transmitting a phase tracking reference signal (PT-RS), comprising:

a terminal receives resource indication states of s SRS resources and port indication states of s DMRS ports indicated by a base station; the resource indication states of the s SRS resources are used for indicating the s SRS resources and the arrangement sequence thereof, the port indication states of the s DMRS ports are used for indicating the s DMRS ports and the arrangement sequence thereof, the s SRS resources correspond to the s DMRS ports one by one, and s is an integer greater than or equal to s;

the terminal determines SRS resources corresponding to the DMRS ports meeting the requirement of the set index value in the SRS resources indicated by the resource indication state according to preset mapping rules between the DMRS ports and PT-RS ports and the DMRS ports meeting the requirement of the set index value in the DMRS ports indicated by the port indication state, wherein the SRS resources corresponding to the DMRS ports meeting the requirement of the set index value meet the requirement of the set channel quality; or the terminal determines a DMRS port corresponding to the PT-RS port and SRS resources corresponding to the DMRS port according to a preset PT-RS port indication rule and the resource indication state, wherein the SRS resources meet the requirement of set channel quality;

and the terminal sends the PT-RS on the data layer corresponding to the SRS resource meeting the set channel quality requirement.

11. The method of claim 10, wherein sending the PT-RS comprises:

and sending the PT-RS by using the precoding corresponding to the SRS resource meeting the set channel quality requirement.

12. The method of claim 10, wherein a mapping rule between the DMRS port and PT-RS port is:

13. The method of claim 12, wherein the DMRS port meeting the set index value requirement is the DMRS port with the smallest index value, and wherein the SRS resource meeting the set channel quality requirement is the SRS resource with the best channel quality.

14. The method of claim 10, wherein the preset PT-RS port indication rule is:

15. The method of claim 10, wherein resource indication states of the s SRS resources are predefined; and/or

The port indication status of the s DMRS ports is predefined.

16. A base station, comprising:

the terminal comprises an SRS measurement module, a receiving module and a processing module, wherein the SRS measurement module is used for measuring the SRS sent by the terminal in N sounding reference signal SRS resources and selecting s SRS resources from the N SRS resources; wherein N, s are integers greater than or equal to 1, respectively, and s is less than or equal to N;

the DMRS port allocation module is used for allocating s demodulation reference signal DMRS ports for the s SRS resources, and one SRS resource corresponds to one DMRS port;

a determining module, configured to determine resource indication states of the s SRS resources and port indication states of the s DMRS ports according to a mapping rule between a preset DMRS port and a phase tracking reference signal PT-RS port or according to a preset PT-RS port indication rule; the resource indication states of the s SRS resources are used for indicating the s SRS resources and the arrangement sequence thereof, and the port indication states of the s DMRS ports are used for indicating the s DMRS ports and the arrangement sequence thereof;

and the indicating module is used for indicating the resource indicating states of the s SRS resources and the port indicating states of the s DMRS ports to the terminal.

17. A terminal, comprising:

a receiving module, configured to receive resource indication states of s SRS resources and port indication states of s DMRS ports, where the resource indication states are indicated by a base station; the resource indication states of the s SRS resources are used for indicating the s SRS resources and the arrangement sequences of the S SRS resources, the port indication states of the s DMRS ports are used for indicating the s DMRS ports and the arrangement sequences of the S DMRS ports, the s SRS resources correspond to the s DMRS ports one by one, and s is an integer greater than or equal to;

the determining module is used for determining SRS resources corresponding to the DMRS ports meeting the requirement of the set index value in the SRS resources indicated by the resource indication state according to preset mapping rules between the DMRS ports and PT-RS ports and the DMRS ports meeting the requirement of the set index value in the DMRS ports indicated by the port indication state, wherein the SRS resources corresponding to the DMRS ports meeting the requirement of the set index value meet the requirement of the set channel quality; or, according to a preset PT-RS port indication rule, according to the resource indication state and the port indication state, determining a DMRS port corresponding to the PT-RS port and SRS resources corresponding to the DMRS port, wherein the SRS resources meet the requirement of set channel quality;

and a sending module, configured to send the PT-RS on the data layer corresponding to the SRS resource that meets the set channel quality requirement.

18. A base station, comprising: the system comprises a processor, a memory and a transceiver, wherein the processor, the memory and the transceiver are connected through a bus, and the transceiver is used for transmitting and receiving information according to the control of the processor;

the processor is used for reading the program in the memory and executing:

selecting s SRS resources from N SRS resources by measuring SRS sent by a terminal in the N SRS resources; wherein N, s are integers greater than or equal to 1, respectively, and s is less than or equal to N;

allocating s demodulation reference signal (DMRS) ports for the s SRS resources, wherein one SRS resource corresponds to one DMRS port;

determining resource indication states of the s SRS resources and port indication states of the s DMRS ports according to a mapping rule between a preset DMRS port and a phase tracking reference signal PT-RS port or according to a preset PT-RS port indication rule; the resource indication states of the s SRS resources are used for indicating the s SRS resources and the arrangement sequence thereof, and the port indication states of the s DMRS ports are used for indicating the s DMRS ports and the arrangement sequence thereof;

and indicating the resource indication states of the s SRS resources and the port indication states of the s DMRS ports to the terminal through the transceiver.

19. The base station of claim 18, wherein the mapping rule between the DMRS port and the PT-RS port is:

20. The base station of claim 19, wherein the DMRS port meeting the requirement for the set index value is a DMRS port with a smallest index value in a DMRS port group allocated by the base station, and wherein the SRS resource meeting the requirement for the set channel quality is an SRS resource with a best channel quality among the SRS resources selected by the base station.

21. The base station of claim 18, wherein the preset PT-RS port indication rule is:

22. The base station of any of claims 18 to 21, wherein the s SRS resources correspond to a plurality of different resource indication states, and wherein the s DMRS ports correspond to one port indication state;

the processor is specifically configured to: and according to the preset mapping rule between the DMRS port and the PT-RS port and the arrangement position of the DMRS port which meets the requirement of the set index value and is indicated by the port indication state corresponding to the s DMRS ports in the s DMRS ports, selecting one resource indication state from a plurality of different resource indication states corresponding to the s SRS resources, so that the DMRS port which meets the requirement of the set index value corresponds to the SRS resource which meets the requirement of the set channel quality and is indicated by the selected resource indication state.

23. The base station of any of claims 18 to 21, wherein the s SRS resources correspond to a plurality of different resource indication states, and wherein the s DMRS ports correspond to one port indication state;

the processor is specifically configured to: and according to the SRS measurement result and a preset PT-RS port indication rule, selecting one resource indication state from a plurality of different resource indication states corresponding to the s SRS resources, so that the DMRS port corresponding to the kth (i) SRS resource indicated by the resource indication state is the DMRS port corresponding to the PT-RS port i.

24. The base station of any of claims 18 to 21, wherein the s SRS resources correspond to one resource indication state and the s DMRS ports correspond to a plurality of different port indication states;

the processor is specifically configured to: and according to the preset mapping rule between the DMRS port and the PT-RS port and the arrangement position of the SRS resource which meets the set channel quality requirement and is indicated by the resource indication states corresponding to the s SRS resources in the s SRS resources, selecting one port indication state from a plurality of different port indication states corresponding to the s DMRS ports, and enabling the SRS resource which meets the set channel quality requirement to correspond to the DMRS port which meets the set index value requirement and is indicated by the selected port indication state.

25. The base station of any of claims 18 to 21, wherein the s SRS resources correspond to one resource indication state, the s DMRS ports correspond to a plurality of different port indication states;

the processor is specifically configured to: and according to the SRS measurement result and a preset PT-RS port indication rule, selecting one port indication state from a plurality of different port indication states corresponding to the s DMRS ports, so that the kth (i) DMRS port indicated by the port indication state is the DMRS port corresponding to the PT-RS port i.

26. The base station of claim 18, wherein resource indication states of the s SRS resources are predefined; and/or

The port indication status of the s DMRS ports is predefined.

27. A terminal, comprising: the system comprises a processor, a memory and a transceiver, wherein the processor, the memory and the transceiver are connected through a bus, and the transceiver is used for transmitting and receiving information according to the control of the processor;

the processor is used for reading the program in the memory and executing:

receiving resource indication states of s SRS resources and port indication states of s DMRS ports indicated by a base station through the transceiver; the resource indication states of the s SRS resources are used for indicating the s SRS resources and the arrangement sequence thereof, the port indication states of the s DMRS ports are used for indicating the s DMRS ports and the arrangement sequence thereof, the s SRS resources correspond to the s DMRS ports one by one, and s is an integer greater than or equal to s;

according to a preset mapping rule between the DMRS port and the PT-RS port, according to the DMRS port which meets the requirement of the index value in the DMRS port indicated by the port indication state, determining the SRS resource corresponding to the DMRS port which meets the requirement of the set index value in the SRS resource indicated by the resource indication state, wherein the SRS resource corresponding to the DMRS port which meets the requirement of the set index value meets the requirement of the set channel quality; or the terminal determines a DMRS port corresponding to the PT-RS port and SRS resources corresponding to the DMRS port according to a preset PT-RS port indication rule and the resource indication state, wherein the SRS resources meet the requirement of set channel quality;

and sending the PT-RS on a data layer corresponding to the SRS resource meeting the set channel quality requirement through the transceiver.

28. The terminal of claim 27, wherein the processor is specifically configured to:

and sending the PT-RS through the transceiver by using the precoding corresponding to the SRS resource meeting the set channel quality requirement.

29. The terminal of claim 27, wherein a mapping rule between the DMRS port and the PT-RS port is:

30. The terminal of claim 29, wherein the DMRS port meeting the set index requirement is the DMRS port with the smallest index value, and wherein the SRS resource meeting the set channel quality requirement is the SRS resource with the best channel quality.

31. The terminal of claim 27, wherein the preset PT-RS port indication rule is:

32. The terminal according to claim 27, wherein the resource indication status of the s SRS resources is predefined; and/or

The port indication status of the s DMRS ports is predefined.