Information transmission method, device, terminal equipment, base station and storage medium

Abstract

The present disclosure proposes an information transmission method, apparatus, terminal equipment, base station and storage medium, which belongs to the field of communication technology. The method includes: obtaining a target demodulation reference signal DMRS port associated with uplink PT-RS transmission, wherein the target DMRS port configured by the base station is used for PT-RS transmission of the first PUSCH transmission opportunity; determining the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity; wherein, one PT-RS port corresponds to one target DMRS port at each transmission opportunity, the target DMRS port is included in the DMRS port group associated with the corresponding PT-RS port, and the corresponding target DMRS ports of two adjacent transmission opportunities are different; at each transmission opportunity, the PT-RS port is mapped to the corresponding target DMRS port for transmitting the PT-RS. In the method provided by the present disclosure, the PT-RS transmission accuracy is high and the phase noise estimation accuracy is high.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to an information transmission method, apparatus, terminal equipment, base station, and storage medium. Background Art

[0002] PT-RS (Phase-tracking reference signals) is a UE (User Equipment)-specific reference signal configured by the base station to the terminal device. By introducing PT-RS in 5G New Radio (NR), the phase changes caused by phase noise can be tracked, thereby ensuring that the base station can estimate the phase noise of the link to compensate for the impact of phase noise. In related technologies, when the UE sends PT-RS, the PT-RS port will be mapped to the DMRS (demodulation reference signal) port configured by the base station to realize the transmission of PT-RS.

[0003] However, in related art, when PT-RS is repeatedly transmitted, the DMRS port mapped to the PT-RS port at each transmission opportunity is fixed. However, because the channel quality of the channels corresponding to the DMRS ports at different transmission opportunities can vary, it is impossible to ensure that the channel quality of the PT-RS transmission channel at each transmission opportunity is the highest at the current transmission opportunity. This affects the PT-RS transmission accuracy and leads to inaccurate phase noise estimation. Summary of the Invention

[0004] The present disclosure proposes an information transmission method, apparatus, terminal device, base station, and storage medium, which are used to solve the technical problem of inaccurate phase noise estimation caused by low transmission accuracy of PT-RS in related technologies.

[0005] An information transmission method proposed in an embodiment of one aspect of the present disclosure is applied to a terminal device UE, including:

[0006] Acquire a target demodulation reference signal (DMRS) port associated with uplink PT-RS transmission, wherein the target DMRS port is used for PT-RS transmission at a first transmission opportunity of a physical uplink shared channel (PUSCH);

[0007] Determining a target DMRS port corresponding to each subsequent transmission opportunity for sending a PT-RS; wherein one PT-RS port corresponds to one target DMRS port in each transmission opportunity, the target DMRS port is included in a DMRS port group associated with the corresponding PT-RS port, and the target DMRS ports corresponding to two adjacent transmission opportunities are different;

[0008] At each transmission opportunity, a PT-RS port is mapped to a corresponding target DMRS port for transmitting the PT-RS.

[0009] Another aspect of the present disclosure provides an information transmission method, applied to a base station, including:

[0010] A target DMRS port associated with uplink PT-RS transmission is sent to the UE, wherein the target DMRS port is used for transmission of the PT-RS at the first transmission opportunity of the PUSCH.

[0011] Another aspect of the present disclosure provides an information transmission device, including:

[0012] An acquisition module, configured to acquire a target DMRS port associated with uplink PT-RS transmission, wherein the target DMRS port is used for PT-RS transmission at the first transmission opportunity of the PUSCH;

[0013] a determination module, configured to determine a corresponding target DMRS port for transmitting a PT-RS at each subsequent transmission opportunity; wherein one PT-RS port corresponds to one target DMRS port at each transmission opportunity, the target DMRS port being included in a DMRS port group associated with the corresponding PT-RS port, and the corresponding target DMRS ports of two adjacent transmission opportunities being different;

[0014] The mapping module is used to map the PT-RS port to the corresponding target DMRS port at each transmission opportunity to transmit the PT-RS.

[0015] Another aspect of the present disclosure provides an information transmission device, including:

[0016] The sending module is configured to send a target DMRS port associated with uplink PT-RS transmission to the UE, wherein the target DMRS port is used for transmission of PT-RS at the first transmission opportunity of the PUSCH.

[0017] Another aspect of the present disclosure provides a terminal device, comprising: a transceiver; a memory; and a processor, which is connected to the transceiver and the memory, respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and is capable of implementing the method proposed in any of the above embodiments.

[0018] Another aspect of the present disclosure provides a base station, which includes: a transceiver; a memory; and a processor, which is connected to the transceiver and the memory, respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and can implement the method proposed in any of the above embodiments.

[0019] Another aspect of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the method provided in any of the above embodiments can be implemented.

[0020] In the embodiment of the present disclosure, when the terminal device uses the PT-RS port to transmit the PT-RS signal, the PT-RS port will be alternately mapped to different DMRS ports at different transmission times, that is, different channels will be used to transmit PT-RS at different transmission times, thereby avoiding the phenomenon of "using a fixed channel to transmit PT-RS for each transmission time", ensuring the transmission accuracy of PT-RS, and then ensuring the accuracy of phase noise estimation, and solving the problem of inaccurate phase noise estimation caused by channel changes and estimation delays.

[0021] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0023] Figure 1 A flowchart of an information transmission method provided by one embodiment of the present disclosure;

[0024] Figure 2 A flowchart of an information transmission method provided by another embodiment of the present disclosure;

[0025] Figure 3 A flowchart of an information transmission method provided by another embodiment of the present disclosure;

[0026] Figure 4A flowchart of an information transmission method provided by another embodiment of the present disclosure;

[0027] Figure 5 A flowchart of an information transmission method provided by another embodiment of the present disclosure;

[0028] Figure 6 A flowchart of an information transmission method provided by another embodiment of the present disclosure;

[0029] Figure 7 A flowchart of an information transmission method provided by another embodiment of the present disclosure;

[0030] Figure 8 A flowchart of an information transmission method provided by another embodiment of the present disclosure;

[0031] Figure 9 A flowchart of an information transmission method provided by another embodiment of the present disclosure;

[0032] Figure 10 A flowchart of an information transmission method provided by another embodiment of the present disclosure;

[0033] Figure 11 A schematic structural diagram of an information transmission device provided by one embodiment of the present disclosure;

[0034] Figure 12 A schematic structural diagram of an information transmission device provided by one embodiment of the present disclosure;

[0035] Figure 13 This is a block diagram of a terminal device provided by one embodiment of the present disclosure;

[0036] Figure 14 A block diagram of a base station provided in accordance with an embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0038] The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present disclosure. The singular forms "a," "an," and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0039] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0040] The embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be understood as limiting the present disclosure.

[0041] In the information transmission method provided in the embodiment of the present disclosure, the terminal device will obtain a target DMRS (demodulation reference signal) port associated with the transmission of uplink PT-RS (Phase-tracking reference signals), wherein the target DMRS port can be used for PT-RS transmission of the first transmission opportunity of PUSCH (physical uplink shared channel); thereafter, the terminal device will determine the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity; wherein, one PT-RS port corresponds to one target DMRS port at each transmission opportunity, the target DMRS port is included in the DMRS port group associated with the corresponding PT-RS port, and the corresponding target DMRS ports of two adjacent transmission opportunities are different; thereafter, at each transmission opportunity, the PT-RS port will be mapped to the corresponding target DMRS port for transmitting PT-RS.

[0042] It can be seen from this that in the embodiment of the present disclosure, when the terminal device uses the PT-RS port to transmit the PT-RS signal, at different transmission times, the PT-RS port will be alternately mapped to different DMRS ports, that is, at different transmission times, different channels will be used to transmit PT-RS, which can avoid the phenomenon of "using a fixed channel to transmit PT-RS for each transmission time", thereby ensuring the transmission accuracy of PT-RS, and then ensuring the accuracy of phase noise estimation, and solving the problem of inaccurate phase noise estimation caused by channel changes and estimation delays.

[0043] The information transmission method, apparatus, terminal device, base station, and storage medium provided by the present disclosure are described in detail below with reference to the accompanying drawings.

[0044] Figure 1 A flow chart of an information transmission method provided by an embodiment of the present disclosure is applied to UE (Unified Equipment, terminal equipment), such as Figure 1 As shown, the information transmission method may include the following steps:

[0045] Step 101: Acquire a target DMRS port associated with uplink PT-RS transmission, wherein the target DMRS port associated with uplink PT-RS transmission is used for PT-RS transmission at the first transmission opportunity of a PUSCH.

[0046] It should be noted that a UE can refer to a device that provides voice and / or data connectivity to a user. A UE can communicate with one or more core networks via a RAN (Radio Access Network). A UE can be an IoT terminal, such as a sensor device, a mobile phone (also known as a "cellular" phone), and a computer with an IoT terminal. For example, a UE can be a fixed, portable, pocket-sized, handheld, built-in computer, or vehicle-mounted device. For example, a station (STA), subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, or user agent. Alternatively, a UE can be a device on an unmanned aerial vehicle. Alternatively, a UE can be an in-vehicle device, such as a driving computer with wireless communication capabilities, or a wireless terminal connected to an external driving computer. Alternatively, a UE can be a roadside device, such as a streetlight, traffic light, or other roadside device with wireless communication capabilities.

[0047] In one embodiment of the present disclosure, when a UE transmits a PT-RS to a base station, it typically transmits the PT-RS (Phase-tracking reference signals) repeatedly over multiple PUSCH transmission opportunities to ensure the success rate of PT-RS transmission. Furthermore, the UE may utilize multi-layer transmission technology to transmit the PT-RS.

[0048] In one embodiment of the present disclosure, when the UE repeatedly transmits PT-RS using multi-layer transmission technology, the corresponding target DMRS ports for sending PT-RS at two adjacent transmission moments can be made different, thereby realizing alternating mapping of DMRS ports during PT-RS transmission, thereby realizing the use of different channels to transmit PT-RS at different transmission moments, and ensuring the transmission accuracy of PT-RS.

[0049] Here, this step 101 is mainly used to determine the corresponding target DMRS port for sending PT-RS at the first PUSCH transmission opportunity.

[0050] In one embodiment of the present disclosure, the target demodulation reference signal (DMRS) port associated with uplink PT-RS transmission obtained by the UE may be configured by the base station.

[0051] Specifically, in one embodiment of the present disclosure, the base station usually pre-configures a target DMRS port associated with uplink PT-RS transmission for the UE, wherein, in the related art, after the UE obtains the target DMRS port configured by the base station, the PT-RS port is mapped to the target DMRS port configured by the base station at each PUSCH transmission opportunity. However, in one embodiment of the present disclosure, at each PUSCH transmission opportunity, the PT-RS port is not mapped to the target DMRS port configured by the base station, but only the target DMRS port configured by the base station is applied to the transmission of the PT-RS at the first PUSCH transmission opportunity, that is, only at the first PUSCH transmission opportunity, the PT-RS port is mapped to the target DMRS port configured by the base station, and the corresponding target DMRS port of each subsequent transmission opportunity will be re-determined, thereby realizing the alternating mapping of DMRS ports during PT-RS transmission, thereby realizing the use of different channels to transmit PT-RS at different transmission opportunities, and ensuring the transmission accuracy of PT-RS.

[0052] Furthermore, in one embodiment of the present disclosure, the method for the base station to pre-configure the target DMRS port associated with the uplink PT-RS transmission for the UE may be: the base station configures the target DMRS port associated with the uplink PT-RS transmission through DCI (downlink control information) signaling.

[0053] Also, it should be noted that, in one embodiment of the present disclosure, the UE may include a single PT-RS port or multiple PT-RS ports.

[0054] In one embodiment of the present disclosure, when the UE includes a single PT-RS port, the single PT-RS port is associated with a group of DMRS ports scheduled and allocated to the UE; and the method for the base station to configure a target DMRS port for the PT-RS port can be: determining the DMRS port group associated with the single PT-RS port, determining a DMRS port from the DMRS port group associated with the single PT-RS port as the target DMRS port corresponding to the single PT-RS port, and configuring the target DMRS port to the UE.

[0055] In another embodiment of the present disclosure, when a UE includes multiple PT-RS ports, each PT-RS port is associated with a DMRS port group, wherein the DMRS port group associated with each PT-RS port is configured by the base station through higher-layer signaling; and each PT-RS port corresponds to an alternating mapping parameter K. The DMRS port group associated with each PT-RS port is determined, and a DMRS port is determined from the DMRS port group associated with each PT-RS port to serve as a target DMRS port for each PT-RS port. The determined target DMRS port is then configured for the UE.

[0056] In one embodiment of the present disclosure, the DMRS port group associated with the PT-RS port may be configured by the base station through high-layer signaling (eg, RRC (Radio Resource Control) signaling).

[0057] Specifically, in one embodiment of the present disclosure, when a UE includes multiple PT-RS ports, the base station may, through higher-layer signaling, schedule and allocate a group of DMRS ports for each PT-RS port as the DMRS port group associated with each PT-RS port. In another embodiment of the present disclosure, when a UE includes a single PT-RS port, the single PT-RS port may be directly associated with the group of DMRS ports scheduled and allocated to the UE.

[0058] It should also be noted that, in one embodiment of the present disclosure, the step of the base station configuring associated DMRS port groups for multiple PT-RS ports respectively through high-layer signaling may be performed before step 101 .

[0059] It can be seen from the above content that in the embodiment of the present disclosure, one PT-RS port corresponds to one target DMRS port, and the target DMRS port is included in the DMRS port group associated with the corresponding PT-RS port.

[0060] Furthermore, in one embodiment of the present disclosure, a method for a base station to determine a target DMRS port from a DMRS port group may include: defining a priority of channel quality of channels corresponding to DMRS ports in the DMRS port group based on a possible distribution probability of quality of a data layer, and determining the target DMRS port from the DMRS port group based on the priority. For example, the DMRS port with the best signal quality in the DMRS port group defined based on the possible distribution probability of quality of the data layer may be determined as the target DMRS port.

[0061] For example, assuming that the UE only includes PT-RS port 0 (i.e., the 0th allocated PT-RS port of the UE), the DMRS port group corresponding to PT-RS port 0 is: DMRS port 0 (i.e., the 0th allocated DMRS port in the DMRS port group associated with PT-RS port 0), DMRS port 1 (i.e., the 1st allocated DMRS port in the DMRS port group associated with PT-RS port 0), DMRS port 2 (i.e., the 2nd allocated DMRS port in the DMRS port group associated with PT-RS port 0), and DMRS port 1 (i.e., the 3rd allocated DMRS port in the DMRS port group associated with PT-RS port 0). Among them, according to the possible distribution probability of the quality of the data layer, it is defined that the channel quality corresponding to DMRS port 2 is the best. In this case, the base station can determine DMRS port 2 as the target DMRS port corresponding to PT-RS port 0, and configure DMRS port 2 to the UE through DCI signaling.

[0062] Assume that the UE includes PT-RS port 0 and PT-RS port 1 (i.e., the first allocated PT-RS port of the UE), the first DMRS port group corresponding to the PT-RS port 0 is: DMRS port 0 (i.e., the 0th allocated DMRS port in the first DMRS port group), DMRS port 1 (i.e., the first allocated DMRS port in the first DMRS port group); the second DMRS port group corresponding to the PT-RS port 1 is: DMRS port 0 (i.e., the 0th allocated DMRS port in the second DMRS port group), DMRS port 1 (i.e., the first allocated DMRS port in the second DMRS port group). Among them, according to the possible distribution probability of the quality of the data layer, it is defined that the channel quality of the channel corresponding to DMRS port 1 in the first DMRS port group is the best, and the channel quality of the channel corresponding to DMRS port 0 in the second DMRS port group is the best. Then the base station can determine DMRS port 1 in the first DMRS port group as the target DMRS port corresponding to PT-RS port 0, and determine DMRS port 0 in the second DMRS port group as the target DMRS port corresponding to PT-RS port 1, and configure DMRS port 1 in the first DMRS port group and DMRS port 0 in the second DMRS port group to the UE through DCI signaling.

[0063] In another embodiment of the present disclosure, the method for a base station to determine a target DMRS port from a DMRS port group may include: determining any DMRS port in the DMRS port group as the target DMRS port.

[0064] Furthermore, in one embodiment of the present disclosure, when the UE determines the target DMRS port associated with the uplink PT-RS transmission, the determined target DMRS port can be configured into the UE so that the UE uses the target DMRS port configured by the base station for the transmission of the PT-RS at the first PUSCH transmission opportunity.

[0065] Specifically, in one embodiment of the present disclosure, at the first PUSCH transmission opportunity, the PT-RS may be mapped to a target DMRS port indicated by the base station to transmit the DMRS port.

[0066] Step 102: Determine the corresponding target DMRS port for sending the PT-RS at each subsequent transmission opportunity.

[0067] In one embodiment of the present disclosure, after determining the target DMRS port for PT-RS transmission at the first PUSCH transmission opportunity, the target DMRS port for PT-RS transmission at each subsequent transmission opportunity is further determined. Furthermore, the target DMRS ports for two adjacent transmission opportunities are different, thereby achieving alternating mapping of DMRS ports when transmitting PT-RS.

[0068] In one embodiment of the present disclosure, the UE may determine the corresponding target DMRS port for sending the PT-RS at each subsequent transmission opportunity according to the port selection rule and the alternating mapping parameter K.

[0069] In one embodiment of the present disclosure, the alternating mapping parameter K is used to indicate the number of alternating mapped DMRS ports supported by the UE on the PT-RS port, K is a positive integer, and 2≤K≤the number of DMRS ports in the DMRS port group associated with the PT-RS port.

[0070] For example, when the alternating mapping parameter K corresponding to a PT-RS port is 2, it indicates that the PT-RS port supports alternating mapping between two DMRS ports. Thus, the UE can select two DMRS ports from the PT-RS port according to the port selection rule, and use these two DMRS ports as the corresponding target DMRS ports for transmitting the PT-RS at each subsequent transmission opportunity, and ensure that the corresponding target DMRS ports of two adjacent transmission opportunities are different.

[0071] It should be noted that, in the embodiment of the present disclosure, one PT-RS port corresponds to one alternating mapping parameter K. Furthermore, in one embodiment of the present disclosure, the alternating mapping parameter K corresponding to different PT-RS ports may be the same. In another embodiment of the present disclosure, the alternating mapping parameter K corresponding to different PT-RS ports may be different.

[0072] Furthermore, in one embodiment of the present disclosure, the port selection rule may include defining a priority of the channel quality of the channel corresponding to the DMRS port based on the possible distribution probability of the quality of the data layer, and selecting the target DMRS port based on the priority. For example, the first K DMRS ports of the channel quality corresponding to the channel in the DMRS port group defined based on the possible distribution probability of the quality of the data layer can be determined as the target DMRS ports. In another embodiment of the present disclosure, the port selection rule may include randomly selecting K DMRS ports in the DMRS port group as the target DMRS ports.

[0073] In one embodiment of the present disclosure, the port selection rule and / or the alternating mapping parameter K may be predefined (i.e., default). In one embodiment of the present disclosure, the port selection rule and / or the alternating mapping parameter K may be configured by the base station through high-layer signaling. It should be noted that, in one embodiment of the present disclosure, when the base station is not configured with a port selection rule, the UE may determine the target DMRS port according to the predefined port selection rule. In another embodiment of the present disclosure, when the base station is not configured with the alternating mapping parameter K, the UE may determine the target DMRS port according to the predefined alternating mapping parameter K.

[0074] Still further, in one embodiment of the present disclosure, the UE may include a single PR-RS port. In another embodiment of the present disclosure, the UE may include multiple PR-RS ports.

[0075] In one embodiment of the present disclosure, when the UE includes a single PT-RS port, the single PT-RS port is associated with a group of DMRS ports to which the UE is scheduled and allocated; and the method for determining the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity may be: for the single PT-RS port, determining the corresponding target DMRS port for each subsequent transmission opportunity from the associated DMRS port group according to the port selection rule and the alternating mapping parameter K.

[0076] In another embodiment of the present disclosure, when a UE includes multiple PT-RS ports, each PT-RS port is associated with a DMRS port group, wherein the DMRS port group associated with each PT-RS port is configured by the base station through higher-layer signaling; and each PT-RS port is associated with an alternating mapping parameter K. A method for determining a target DMRS port for transmitting a PT-RS at each subsequent transmission opportunity may include: for each PT-RS port for transmitting a PT-RS, determining a target DMRS port for each subsequent transmission opportunity from the associated DMRS port group according to a port selection rule and the alternating mapping parameter K.

[0077] Step 103: At each transmission opportunity, the PT-RS port is mapped to the corresponding target DMRS port for transmitting the PT-RS.

[0078] In one embodiment of the present disclosure, after determining the corresponding target DMRS port for sending PT-RS at each transmission opportunity, when each transmission opportunity arrives, the PT-RS port will be mapped to the corresponding target DMRS port to transmit PT-RS, thereby realizing alternating mapping.

[0079] It should be noted that, in one embodiment of the present disclosure, PT-RS is used for repeated transmission of a scheduled PUSCH, and / or, in another embodiment of the present disclosure, PT-RS is used for repeated transmission of a non-scheduled PUSCH.

[0080] In the information transmission method provided in the embodiments of the present disclosure, when repeatedly transmitting the PT-RS using multi-layer transmission technology, the PT-RS ports of two adjacent transmission opportunities are mapped to different target DMRS ports, thereby achieving alternating mapping of DMRS ports during PT-RS transmission. In other words, different channels are used to transmit the PT-RS at adjacent transmission opportunities, thus avoiding the phenomenon of "using a fixed channel to transmit the PT-RS for each transmission opportunity." This ensures the transmission accuracy of the PT-RS and, in turn, the accuracy of the phase noise estimation, solving the problem of inaccurate phase noise estimation caused by channel variations and estimation delays.

[0081] Figure 2 A flowchart of an information transmission method provided by another embodiment of the present disclosure is applied to a UE, such as Figure 2 As shown, the information transmission method may include the following steps:

[0082] Step 201: Send UE capability information to a base station. The UE capability information is used to indicate whether the UE has a transmission capability that supports PT-RS alternating mapping.

[0083] In one embodiment of the present disclosure, alternating PT-RS mapping means that the PT-RS port of the UE can be alternately mapped to different DMRS ports at different transmission opportunities. For example, at the first transmission opportunity, PT-RS port 0 can be mapped to DMRS port 0; at the second transmission opportunity, PT-RS port 0 can be mapped to DMRS port 1; and at the third transmission opportunity, PT-RS port 0 can be mapped to DMRS port 3.

[0084] Furthermore, in one embodiment of the present disclosure, the subsequent step of "determining the corresponding target DMRS port for sending PT-RS at each transmission opportunity" can be performed only when the UE has the transmission capability to support PT-RS alternating mapping.

[0085] Step 202: When the UE capability information sent by the UE to the base station indicates that the UE has the transmission capability of supporting PT-RS alternating mapping, obtain the alternating mapping configuration instruction sent by the base station, which is used to instruct the UE to transmit PT-RS according to PT-RS alternating mapping.

[0086] In one embodiment of the present disclosure, when the UE capability information sent by the UE to the base station indicates that the UE has the transmission capability to support PT-RS alternating mapping, the base station can send an alternating mapping configuration instruction to the UE so that the UE can perform the subsequent step of "determining the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity" according to the alternating mapping configuration instruction.

[0087] In another embodiment of the present disclosure, when the UE capability information sent by the UE to the base station indicates that the UE has the transmission capability to support PT-RS alternating mapping, the base station may not send the alternating mapping configuration instruction to the UE. At this time, the UE can determine the target DMRS port configured by the base station in the subsequent step 203 as the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity.

[0088] It should be noted that, in one embodiment of the present disclosure, the base station may determine whether to send an alternating mapping configuration instruction to the UE based on the number of channel layers and / or channel quality. Also, in one embodiment of the present disclosure, the base station may configure the alternating mapping configuration instruction to the UE via RRC (Radio Resource Control) signaling.

[0089] Step 203: Acquire a target DMRS port associated with uplink PT-RS transmission, wherein the target DMRS port is used for PT-RS transmission at the first PUSCH transmission opportunity.

[0090] In one embodiment of the present disclosure, a detailed introduction to this step can be found in step 101, which will not be described in detail in this embodiment.

[0091] In one embodiment of the present disclosure, the base station may determine, based on a predefined port selection rule, a target DMRS port associated with uplink PT-RS transmission from a PR-RS port-associated DMRS port group. In one embodiment of the present disclosure, the DMRS port group associated with the PR-RS port may be configured by the base station through higher-layer signaling.

[0092] Step 204: The UE obtains a predefined port selection rule and an alternating mapping parameter K. The port selection rule is: randomly selecting K DMRS ports in the DMRS port group as target DMRS ports.

[0093] In one embodiment of the present disclosure, when the base station does not configure the port selection rule and the alternating mapping parameter K for the UE, the UE may obtain a predefined (eg, default) port selection rule and the alternating mapping parameter K.

[0094] In one embodiment of the present disclosure, the alternating mapping parameter K is used to indicate the number of alternating mapped DMRS ports supported by the UE on the PT-RS port, K is a positive integer, and 2≤K≤the number of DMRS ports in the DMRS port group associated with the PT-RS port.

[0095] For example, when the alternating mapping parameter K corresponding to a PT-RS port is 2, it indicates that the PT-RS port supports alternating mapping between two DMRS ports. Thus, the UE can select two DMRS ports from the PT-RS port according to the port selection rule, and use these two DMRS ports as the corresponding target DMRS ports for transmitting the PT-RS at each subsequent transmission opportunity, and ensure that the corresponding target DMRS ports of two adjacent transmission opportunities are different.

[0096] It should be noted that, in the embodiment of the present disclosure, one PT-RS port corresponds to one alternating mapping parameter K. Furthermore, in one embodiment of the present disclosure, the alternating mapping parameter K corresponding to different PT-RS ports may be the same. In another embodiment of the present disclosure, the alternating mapping parameter K corresponding to different PT-RS ports may be different.

[0097] And, in one embodiment of the present disclosure, the predefined alternating mapping parameter K may be equal to the number of DMRS port groups associated with the PT-RS port. In another embodiment of the present disclosure, the predefined alternating mapping parameter K may be less than the number of DMRS port groups associated with the PT-RS port.

[0098] It should be noted that, in one embodiment of the present disclosure, the port selection rule predefined by the UE and the port selection rule predefined by the base station may be the same. In another embodiment of the present disclosure, the port selection rule predefined by the UE and the port selection rule predefined by the base station may also be different.

[0099] Step 205: The UE determines the corresponding target DMRS port for sending the PT-RS at each subsequent transmission opportunity according to the alternating mapping configuration instruction, the predefined port selection rule, and the alternating mapping parameter K.

[0100] In another embodiment of the present disclosure, the UE may include a single PR-RS port. In another embodiment of the present disclosure, the UE may include multiple PR-RS ports.

[0101] In one embodiment of the present disclosure, when the UE includes a single PT-RS port, the single PT-RS port is associated with a group of DMRS ports to which the UE is scheduled and allocated; and the method for determining the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity may be: for the single PT-RS port, determining the corresponding target DMRS port for each subsequent transmission opportunity from the associated DMRS port group according to the port selection rule and the alternating mapping parameter K.

[0102] In another embodiment of the present disclosure, when a UE includes multiple PT-RS ports, each PT-RS port is associated with a DMRS port group, wherein the DMRS port group associated with each PT-RS port is configured by the base station through higher-layer signaling; and each PT-RS port is associated with an alternating mapping parameter K. A method for determining a target DMRS port for transmitting a PT-RS at each subsequent transmission opportunity may include: for each PT-RS port for transmitting a PT-RS, determining a target DMRS port for each subsequent transmission opportunity from the associated DMRS port group according to a port selection rule and the alternating mapping parameter K.

[0103] Furthermore, in the embodiment of the present disclosure, the UE may determine the target DMRS port corresponding to each subsequent transmission opportunity from the associated DMRS port group according to the port selection rule and the alternating mapping parameter K, which may include:

[0104] K target DMRS ports are determined from the associated DMRS port group according to the port selection rule and the alternating mapping parameter K, and then the K target DMRS ports are respectively determined as the corresponding target DMRS ports for sending PT-RS at each subsequent transmission opportunity.

[0105] For example, assuming that the UE only includes PT-RS port 0, the DMRS port group corresponding to PT-RS port 0 is: DMRS port 0, DMRS port 1, DMRS port 2, and DMRS port 3. The UE will repeatedly transmit the PT-RS using the first transmission opportunity, the second transmission opportunity, the third transmission opportunity, and the fourth transmission opportunity, respectively. The target DMRS port configured by the base station obtained by the UE through step 203 is DMRS port 2, and the alternating mapping parameter K determined by the UE through step 203 is 2. The port selection rule is: randomly select K DMRS ports in the DMRS port group as the target DMRS ports.

[0106] On this basis, in another embodiment of the present disclosure, in this step, the method for the UE to determine the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity according to the alternating mapping configuration instruction according to the predefined port selection rule and the alternating mapping parameter K can be: DMRS port 2 and DMRS port 0 are determined as the corresponding target DMRS ports for subsequent transmission opportunities, and at subsequent transmission opportunities, alternating mapping is performed between DMRS port 2 and DMRS port 0, for example, at the second transmission opportunity, PT-RS port 0 is mapped to DMRS port 0, at the third transmission opportunity, PT-RS port 0 is mapped to DMRS port 2, and at the fourth transmission opportunity, PT-RS port 0 is mapped to DMRS port 0.

[0107] Alternatively, in another embodiment of the present disclosure, DMRS port 2 and DMRS port 3 can be determined as the corresponding target DMRS ports for subsequent transmission opportunities, and alternating mapping is performed between DMRS port 2 and DMRS port 3 at subsequent transmission opportunities. For example, at the second transmission opportunity, PT-RS port 0 is mapped to DMRS port 3, at the third transmission opportunity, PT-RS port 0 is mapped to DMRS port 2, and at the fourth transmission opportunity, PT-RS port 0 is mapped to DMRS port 3.

[0108] It should be noted that, in one embodiment of the present disclosure, the target DMRS ports corresponding to each subsequent transmission opportunity determined in this step may include the target DMRS port configured by the base station in step 203. In another embodiment of the present disclosure, the target DMRS ports corresponding to each subsequent transmission opportunity determined in this step may also not include the target DMRS port configured by the base station in step 203.

[0109] Step 206: At each transmission opportunity, the PT-RS port is mapped to the corresponding target DMRS port for transmitting the PT-RS.

[0110] In one embodiment of the present disclosure, after determining the corresponding target DMRS port for sending PT-RS at each transmission opportunity, when each transmission opportunity arrives, the PT-RS port will be mapped to the corresponding target DMRS port to transmit PT-RS, thereby realizing alternating mapping.

[0111] It should be noted that, in one embodiment of the present disclosure, PT-RS is used for repeated transmission of a scheduled PUSCH, and / or, in another embodiment of the present disclosure, PT-RS is used for repeated transmission of a non-scheduled PUSCH.

[0112] In the information transmission method provided in the embodiments of the present disclosure, when repeatedly transmitting the PT-RS using multi-layer transmission technology, the PT-RS ports of two adjacent transmission opportunities are mapped to different target DMRS ports, thereby achieving alternating mapping of DMRS ports during PT-RS transmission. In other words, different channels are used to transmit the PT-RS at adjacent transmission opportunities, thus avoiding the phenomenon of "using a fixed channel to transmit the PT-RS for each transmission opportunity." This ensures the transmission accuracy of the PT-RS and, in turn, the accuracy of the phase noise estimation, solving the problem of inaccurate phase noise estimation caused by channel variations and estimation delays.

[0113] Figure 3 A flowchart of an information transmission method provided by another embodiment of the present disclosure is applied to a UE, such as Figure 3 As shown, the information transmission method may include the following steps:

[0114] Step 301: Send UE capability information to a base station. The UE capability information is used to indicate whether the UE has a transmission capability that supports PT-RS alternating mapping.

[0115] In one embodiment of the present disclosure, alternating PT-RS mapping means that the PT-RS port of the UE can be alternately mapped to different DMRS ports at different transmission opportunities. For example, at the first transmission opportunity, PT-RS port 0 can be mapped to DMRS port 0; at the second transmission opportunity, PT-RS port 0 can be mapped to DMRS port 1; and at the third transmission opportunity, PT-RS port 0 can be mapped to DMRS port 3.

[0116] Furthermore, in one embodiment of the present disclosure, the subsequent step of "determining the corresponding target DMRS port for sending PT-RS at each transmission opportunity" can be performed only when the UE has the transmission capability to support PT-RS alternating mapping.

[0117] Step 302: When the UE capability information sent by the UE to the base station indicates that the UE has the transmission capability of supporting PT-RS alternating mapping, obtain the alternating mapping configuration instruction sent by the base station, which is used to instruct the UE to transmit PT-RS according to PT-RS alternating mapping.

[0118] In one embodiment of the present disclosure, when the UE capability information sent by the UE to the base station indicates that the UE has the transmission capability to support PT-RS alternating mapping, the base station can send an alternating mapping configuration instruction to the UE so that the UE can perform the subsequent step of "determining the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity" according to the alternating mapping configuration instruction.

[0119] In another embodiment of the present disclosure, when the UE capability information sent by the UE to the base station indicates that the UE has the transmission capability to support PT-RS alternating mapping, the base station may not send the alternating mapping configuration instruction to the UE. At this time, the UE can determine the target DMRS port configured by the base station in the subsequent step 303 as the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity.

[0120] Step 303: Acquire a target DMRS port associated with uplink PT-RS transmission, wherein the target DMRS port is used for PT-RS transmission at the first PUSCH transmission opportunity.

[0121] In one embodiment of the present disclosure, a detailed introduction to this step can be found in step 101, which will not be described in detail in this embodiment.

[0122] In one embodiment of the present disclosure, the base station may determine, based on a predefined port selection rule, a target DMRS port associated with uplink PT-RS transmission from a PR-RS port-associated DMRS port group. In one embodiment of the present disclosure, the DMRS port group associated with the PR-RS port may be configured by the base station through higher-layer signaling.

[0123] Step 304: The UE obtains a predefined port selection rule and an alternating mapping parameter K. The port selection rule is: defining the channel quality of the channel corresponding to the DMRS port according to the possible distribution probability of the quality of the data layer, and selecting the target DMRS port according to the priority.

[0124] In one embodiment of the present disclosure, when the base station does not configure the port selection rule and the alternating mapping parameter K for the UE, the UE may obtain a predefined (eg, default) port selection rule and the alternating mapping parameter K.

[0125] In one embodiment of the present disclosure, the alternating mapping parameter K is used to indicate the number of alternating mapped DMRS ports supported by the UE on the PT-RS port, K is a positive integer, and 2≤K≤the number of DMRS ports in the DMRS port group associated with the PT-RS port.

[0126] For example, when the alternating mapping parameter K corresponding to a PT-RS port is 2, it indicates that the PT-RS port supports alternating mapping between two DMRS ports. Thus, the UE can select two DMRS ports from the PT-RS port according to the port selection rule, and use these two DMRS ports as the corresponding target DMRS ports for transmitting the PT-RS at each subsequent transmission opportunity, and ensure that the corresponding target DMRS ports of two adjacent transmission opportunities are different.

[0127] It should be noted that, in the embodiment of the present disclosure, one PT-RS port corresponds to one alternating mapping parameter K. Furthermore, in one embodiment of the present disclosure, the alternating mapping parameter K corresponding to different PT-RS ports may be the same. In another embodiment of the present disclosure, the alternating mapping parameter K corresponding to different PT-RS ports may be different.

[0128] And, in one embodiment of the present disclosure, the predefined alternating mapping parameter K may be equal to the number of DMRS port groups associated with the PT-RS port. In another embodiment of the present disclosure, the predefined alternating mapping parameter K may be less than the number of DMRS port groups associated with the PT-RS port.

[0129] The port selection rule may include defining a priority of channel quality of channels corresponding to DMRS ports based on a possible distribution probability of quality of the data layer, and selecting a target DMRS port based on the priority. For example, the first K DMRS ports of the channel quality corresponding to the channels in the DMRS port group defined based on the possible distribution probability of quality of the data layer may be determined as the target DMRS ports.

[0130] It should be noted that, in one embodiment of the present disclosure, the port selection rule predefined by the UE and the port selection rule predefined by the base station may be the same. In another embodiment of the present disclosure, the port selection rule predefined by the UE and the port selection rule predefined by the base station may also be different.

[0131] Step 305: The UE determines the corresponding target DMRS port for sending the PT-RS at each subsequent transmission opportunity according to the alternating mapping configuration instruction, the predefined port selection rule, and the alternating mapping parameter K.

[0132] In another embodiment of the present disclosure, the UE may include a single PR-RS port. In another embodiment of the present disclosure, the UE may include multiple PR-RS ports.

[0133] In one embodiment of the present disclosure, when the UE includes a single PT-RS port, the single PT-RS port is associated with a group of DMRS ports to which the UE is scheduled and allocated; and the method for determining the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity may be: for the single PT-RS port, determining the corresponding target DMRS port for each subsequent transmission opportunity from the associated DMRS port group according to the port selection rule and the alternating mapping parameter K.

[0134] In another embodiment of the present disclosure, when a UE includes multiple PT-RS ports, each PT-RS port is associated with a DMRS port group, wherein the DMRS port group associated with each PT-RS port is configured by the base station through higher-layer signaling; and each PT-RS port is associated with an alternating mapping parameter K. A method for determining a target DMRS port for transmitting a PT-RS at each subsequent transmission opportunity may include: for each PT-RS port for transmitting a PT-RS, determining a target DMRS port for each subsequent transmission opportunity from the associated DMRS port group according to a port selection rule and the alternating mapping parameter K.

[0135] Furthermore, in the embodiment of the present disclosure, the UE may determine the target DMRS port corresponding to each subsequent transmission opportunity from the associated DMRS port group according to the port selection rule and the alternating mapping parameter K, which may include:

[0136] K target DMRS ports are determined from the associated DMRS port group according to the port selection rule and the alternating mapping parameter K, and then the K target DMRS ports are respectively determined as the corresponding target DMRS ports for sending PT-RS at each subsequent transmission opportunity.

[0137] For example, assuming that the UE only includes PT-RS port 0, the DMRS port group corresponding to PT-RS port 0 is: DMRS port 0, DMRS port 1, DMRS port 2, and DMRS port 3. The UE will repeatedly send PT-RS using the first transmission opportunity, the second transmission opportunity, the third transmission opportunity, and the fourth transmission opportunity, respectively. The target DMRS port configured by the base station obtained by the UE through the above step 303 is DMRS port 0, and the alternating mapping parameter K determined by the UE through the above step 304 is 2. The port selection rule is: the priority of the channel quality of the channel corresponding to the DMRS port is defined according to the possible distribution probability of the quality of the data layer, and the target DMRS port is selected according to the priority.

[0138] On this basis, in another embodiment of the present disclosure, the method for the UE to determine the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity according to the alternating mapping configuration instruction according to the predefined port selection rule and the alternating mapping parameter K can be: according to the possible distribution probability of the quality of the data layer, the channel quality of the channels corresponding to DMRS port 0, DMRS port 1, DMRS port 2, and DMRS port 3 of each transmission opportunity is defined from high to low, and the first two DMRS ports of the channel quality of the channels corresponding to DMRS port 0, DMRS port 1, DMRS port 2, and DMRS port 3 of a certain transmission opportunity (i.e., the first transmission opportunity or the second transmission opportunity or the third transmission opportunity or the fourth transmission opportunity) are determined as the target DMRS ports, and alternating mapping is performed between the first two DMRS ports in subsequent transmission opportunities.

[0139] For example, assuming that the channel quality of the channels corresponding to DMRS port 0, DMRS port 1, DMRS port 2, and DMRS port 3 at the second transmission opportunity is arranged from high to low according to the possible distribution probability of the quality of the data layer: DMRS port 0>DMRS port 1>DMRS port 2>DMRS port 3, then DMRS port 0 and DMRS port 1 can be determined as target DMRS ports, and in subsequent transmission opportunities, alternating mapping is performed between DMRS port 0 and DMRS port 1. For example, at the second transmission opportunity, PT-RS port 0 is mapped to DMRS port 0, at the third transmission opportunity, PT-RS port 0 is mapped to DMRS port 1, and at the fourth transmission opportunity, PT-RS port 0 is mapped to DMRS port 0.

[0140] It should be noted that, in one embodiment of the present disclosure, the target DMRS ports corresponding to the subsequent transmission opportunities determined in this step may include the target DMRS ports configured by the base station in step 303. In another embodiment of the present disclosure, the target DMRS ports corresponding to the subsequent transmission opportunities determined in this step may also not include the target DMRS ports configured by the base station in step 303.

[0141] Step 306: At each transmission opportunity, the PT-RS port is mapped to the corresponding target DMRS port for transmitting the PT-RS.

[0142] In one embodiment of the present disclosure, after determining the corresponding target DMRS port for sending PT-RS at each transmission opportunity, when each transmission opportunity arrives, the PT-RS port will be mapped to the corresponding target DMRS port to transmit PT-RS, thereby realizing alternating mapping.

[0143] It should be noted that, in one embodiment of the present disclosure, PT-RS is used for repeated transmission of a scheduled PUSCH, and / or, in another embodiment of the present disclosure, PT-RS is used for repeated transmission of a non-scheduled PUSCH.

[0144] In the information transmission method provided in the embodiments of the present disclosure, when repeatedly transmitting the PT-RS using multi-layer transmission technology, the PT-RS ports of two adjacent transmission opportunities are mapped to different target DMRS ports, thereby achieving alternating mapping of DMRS ports during PT-RS transmission. In other words, different channels are used to transmit the PT-RS at adjacent transmission opportunities, thus avoiding the phenomenon of "using a fixed channel to transmit the PT-RS for each transmission opportunity." This ensures the transmission accuracy of the PT-RS and, in turn, the accuracy of the phase noise estimation, solving the problem of inaccurate phase noise estimation caused by channel variations and estimation delays.

[0145] Figure 4 A flowchart of an information transmission method provided by another embodiment of the present disclosure is applied to a UE, such as Figure 4 As shown, the information transmission method may include the following steps:

[0146] Step 401: Send UE capability information to a base station. The UE capability information is used to indicate whether the UE has a transmission capability that supports PT-RS alternating mapping.

[0147] In one embodiment of the present disclosure, alternating PT-RS mapping means that the PT-RS port of the UE can be alternately mapped to different DMRS ports at different transmission opportunities. For example, at the first transmission opportunity, PT-RS port 0 can be mapped to DMRS port 0; at the second transmission opportunity, PT-RS port 0 can be mapped to DMRS port 1; and at the third transmission opportunity, PT-RS port 0 can be mapped to DMRS port 3.

[0148] Furthermore, in one embodiment of the present disclosure, the subsequent step of "determining the corresponding target DMRS port for sending PT-RS at each transmission opportunity" can be performed only when the UE has the transmission capability to support PT-RS alternating mapping.

[0149] Step 402: When the UE capability information sent by the UE to the base station indicates that the UE has the transmission capability of supporting PT-RS alternating mapping, obtain the alternating mapping configuration instruction sent by the base station, which is used to instruct the UE to transmit PT-RS according to PT-RS alternating mapping.

[0150] In one embodiment of the present disclosure, when the UE capability information sent by the UE to the base station indicates that the UE has the transmission capability to support PT-RS alternating mapping, the base station can send an alternating mapping configuration instruction to the UE so that the UE can perform the subsequent step of "determining the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity" according to the alternating mapping configuration instruction.

[0151] In another embodiment of the present disclosure, when the UE capability information sent by the UE to the base station indicates that the UE has the transmission capability to support PT-RS alternating mapping, the base station may not send the alternating mapping configuration instruction to the UE. At this time, the UE can determine the target DMRS port configured by the base station in the subsequent step 404 as the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity.

[0152] Step 403: The UE obtains a port selection rule and / or an alternating mapping parameter K configured by the base station. The port selection rule is: randomly selecting K DMRS ports in the DMRS port group as target DMRS ports.

[0153] In one embodiment of the present disclosure, the base station may configure a port selection rule and / or an alternate mapping parameter K for the UE. It should be noted that, in one embodiment of the present disclosure, when the base station does not configure a port selection rule, the UE may determine the target DMRS port based on a predefined port selection rule. In another embodiment of the present disclosure, when the base station does not configure the alternate mapping parameter K, the UE may determine the target DMRS port based on the predefined alternate mapping parameter K.

[0154] In one embodiment of the present disclosure, the alternating mapping parameter K is used to indicate the number of alternating mapped DMRS ports supported by the UE on the PT-RS port, K is a positive integer, and 2≤K≤the number of DMRS ports in the DMRS port group associated with the PT-RS port.

[0155] For example, when the alternating mapping parameter K corresponding to a PT-RS port is 2, it indicates that the PT-RS port supports alternating mapping between two DMRS ports. Thus, the UE can select two DMRS ports from the PT-RS port according to the port selection rule, and use these two DMRS ports as the corresponding target DMRS ports for transmitting the PT-RS at each subsequent transmission opportunity, and ensure that the corresponding target DMRS ports of two adjacent transmission opportunities are different.

[0156] It should be noted that, in the embodiment of the present disclosure, one PT-RS port corresponds to one alternating mapping parameter K. Furthermore, in one embodiment of the present disclosure, the alternating mapping parameter K corresponding to different PT-RS ports may be the same. In another embodiment of the present disclosure, the alternating mapping parameter K corresponding to different PT-RS ports may be different.

[0157] And, in one embodiment of the present disclosure, the alternating mapping parameter K may be equal to the number of DMRS port groups associated with the PT-RS port. In another embodiment of the present disclosure, the alternating mapping parameter K may be less than the number of DMRS port groups associated with the PT-RS port.

[0158] In one embodiment of the present disclosure, the method for a base station to configure the alternating mapping parameter K may include: the base station directly determining the alternating mapping parameter.

[0159] In another embodiment of the present disclosure, a method for configuring an alternating mapping parameter K by a base station may include: a UE transmitting an alternating mapping support parameter K1 to the base station, where the alternating mapping support parameter K1 is used to indicate the number of alternating mapping DMRS ports supported by the UE on each PT-RS port, K1 being a positive integer, and 2≤K1≤the number of DMRS ports in a DMRS port group associated with the PT-RS port. The base station determines the alternating mapping parameter K based on the alternating mapping support parameter K1, where K≤K1, and configures the determined alternating mapping parameter K to the UE.

[0160] Step 404: Acquire a target DMRS port associated with uplink PT-RS transmission, wherein the target DMRS port is used for PT-RS transmission at the first PUSCH transmission opportunity.

[0161] In one embodiment of the present disclosure, a detailed introduction to this step can be found in step 101, which will not be described in detail in this embodiment.

[0162] In one embodiment of the present disclosure, the base station may determine the target DMRS port associated with uplink PT-RS transmission from the PR-RS port-associated DMRS port group based on the port selection rule configured for the UE. In one embodiment of the present disclosure, the DMRS port group associated with the PR-RS port may be configured by the base station through higher layer signaling.

[0163] Specifically, it can be seen from step 403 that the port selection rule configured by the base station is: randomly selecting a target DMRS port in the DMRS port group. Based on this, in one embodiment of the present disclosure, the method for the base station to configure the target DMRS port associated with the uplink PT-RS transmission according to the port selection rule may include: determining any DMRS port in the DMRS port group associated with the PR-RS port as the target DMRS port.

[0164] Step 405: The UE determines the corresponding target DMRS port for sending the PT-RS at each subsequent transmission opportunity according to the alternating mapping configuration instruction, the predefined port selection rule, and the alternating mapping parameter K.

[0165] In another embodiment of the present disclosure, the UE may include a single PR-RS port. In another embodiment of the present disclosure, the UE may include multiple PR-RS ports.

[0166] In one embodiment of the present disclosure, when the UE includes a single PT-RS port, the single PT-RS port is associated with a group of DMRS ports to which the UE is scheduled and allocated; and the method for determining the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity may be: for the single PT-RS port, determining the corresponding target DMRS port for each subsequent transmission opportunity from the associated DMRS port group according to the port selection rule and the alternating mapping parameter K.

[0167] In another embodiment of the present disclosure, when a UE includes multiple PT-RS ports, each PT-RS port is associated with a DMRS port group, wherein the DMRS port group associated with each PT-RS port is configured by the base station through higher-layer signaling; and each PT-RS port is associated with an alternating mapping parameter K. A method for determining a target DMRS port for transmitting a PT-RS at each subsequent transmission opportunity may include: for each PT-RS port for transmitting a PT-RS, determining a target DMRS port for each subsequent transmission opportunity from the associated DMRS port group according to a port selection rule and the alternating mapping parameter K.

[0168] Furthermore, in the embodiment of the present disclosure, the UE may determine the target DMRS port corresponding to each subsequent transmission opportunity from the associated DMRS port group according to the port selection rule and the alternating mapping parameter K, which may include:

[0169] K target DMRS ports are determined from the associated DMRS port group according to the port selection rule and the alternating mapping parameter K, and then the K target DMRS ports are respectively determined as the corresponding target DMRS ports for sending PT-RS at each subsequent transmission opportunity.

[0170] For example, assuming that the UE only includes PT-RS port 0, the DMRS port group corresponding to PT-RS port 0 is: DMRS port 0, DMRS port 1, DMRS port 2, and DMRS port 3. The UE will repeatedly transmit the PT-RS using the first transmission opportunity, the second transmission opportunity, the third transmission opportunity, and the fourth transmission opportunity, respectively. The target DMRS port configured by the base station obtained by the UE through step 404 is DMRS port 2, and the alternating mapping parameter K determined by the UE through step 403 is 2. The port selection rule is: randomly select K DMRS ports in the DMRS port group as the target DMRS ports.

[0171] On this basis, in another embodiment of the present disclosure, in this step, the method for the UE to determine the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity according to the alternating mapping configuration instruction according to the predefined port selection rule and the alternating mapping parameter K can be: DMRS port 2 and DMRS port 0 are determined as the corresponding target DMRS ports for subsequent transmission opportunities, and at subsequent transmission opportunities, alternating mapping is performed between DMRS port 2 and DMRS port 0, for example, at the second transmission opportunity, PT-RS port 0 is mapped to DMRS port 0, at the third transmission opportunity, PT-RS port 0 is mapped to DMRS port 2, and at the fourth transmission opportunity, PT-RS port 0 is mapped to DMRS port 0.

[0172] Alternatively, in another embodiment of the present disclosure, DMRS port 2 and DMRS port 3 can be determined as the corresponding target DMRS ports for subsequent transmission opportunities, and alternating mapping is performed between DMRS port 2 and DMRS port 3 at subsequent transmission opportunities. For example, at the second transmission opportunity, PT-RS port 0 is mapped to DMRS port 3, at the third transmission opportunity, PT-RS port 0 is mapped to DMRS port 2, and at the fourth transmission opportunity, PT-RS port 0 is mapped to DMRS port 3.

[0173] It should be noted that, in one embodiment of the present disclosure, the target DMRS ports corresponding to each subsequent transmission opportunity determined in this step may include the target DMRS port configured by the base station in step 404. In another embodiment of the present disclosure, the target DMRS ports corresponding to each subsequent transmission opportunity determined in this step may also not include the target DMRS port configured by the base station in step 404.

[0174] Step 406: At each transmission opportunity, the PT-RS port is mapped to the corresponding target DMRS port for transmitting the PT-RS.

[0175] In one embodiment of the present disclosure, after determining the corresponding target DMRS port for sending PT-RS at each transmission opportunity, when each transmission opportunity arrives, the PT-RS port will be mapped to the corresponding target DMRS port to transmit PT-RS, thereby realizing alternating mapping.

[0176] It should be noted that, in one embodiment of the present disclosure, PT-RS is used for repeated transmission of a scheduled PUSCH, and / or, in another embodiment of the present disclosure, PT-RS is used for repeated transmission of a non-scheduled PUSCH.

[0177] In the information transmission method provided in the embodiments of the present disclosure, when repeatedly transmitting the PT-RS using multi-layer transmission technology, the PT-RS ports of two adjacent transmission opportunities are mapped to different target DMRS ports, thereby achieving alternating mapping of DMRS ports during PT-RS transmission. In other words, different channels are used to transmit the PT-RS at adjacent transmission opportunities, thus avoiding the phenomenon of "using a fixed channel to transmit the PT-RS for each transmission opportunity." This ensures the transmission accuracy of the PT-RS and, in turn, the accuracy of the phase noise estimation, solving the problem of inaccurate phase noise estimation caused by channel variations and estimation delays.

[0178] Figure 5 A flowchart of an information transmission method provided by another embodiment of the present disclosure is applied to a UE, such as Figure 5 As shown, the information transmission method may include the following steps:

[0179] Step 501: Send UE capability information to a base station. The UE capability information is used to indicate whether the UE has a transmission capability that supports PT-RS alternating mapping.

[0180] In one embodiment of the present disclosure, alternating PT-RS mapping means that the PT-RS port of the UE can be alternately mapped to different DMRS ports at different transmission opportunities. For example, at the first transmission opportunity, PT-RS port 0 can be mapped to DMRS port 0; at the second transmission opportunity, PT-RS port 0 can be mapped to DMRS port 1; and at the third transmission opportunity, PT-RS port 0 can be mapped to DMRS port 3.

[0181] Furthermore, in one embodiment of the present disclosure, the subsequent step of "determining the corresponding target DMRS port for sending PT-RS at each transmission opportunity" can be performed only when the UE has the transmission capability to support PT-RS alternating mapping.

[0182] Step 502: When the UE capability information sent by the UE to the base station indicates that the UE has the transmission capability of supporting PT-RS alternating mapping, obtain the alternating mapping configuration instruction sent by the base station, which is used to instruct the UE to transmit PT-RS according to PT-RS alternating mapping.

[0183] In one embodiment of the present disclosure, when the UE capability information sent by the UE to the base station indicates that the UE has the transmission capability to support PT-RS alternating mapping, the base station can send an alternating mapping configuration instruction to the UE so that the UE can perform the subsequent step of "determining the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity" according to the alternating mapping configuration instruction.

[0184] In another embodiment of the present disclosure, when the UE capability information sent by the UE to the base station indicates that the UE has the transmission capability to support PT-RS alternating mapping, the base station may not send the alternating mapping configuration instruction to the UE. At this time, the UE can determine the target DMRS port configured by the base station in the subsequent step 504 as the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity.

[0185] Step 503: The UE obtains the port selection rule and / or alternating mapping parameter K configured by the base station. The port selection rule is: defining the priority of the channel quality of the DMRS port corresponding to the channel according to the possible distribution probability of the quality of the data layer, and selecting the target DMRS port according to the priority.

[0186] In one embodiment of the present disclosure, the base station may configure a port selection rule and / or an alternate mapping parameter K for the UE. It should be noted that, in one embodiment of the present disclosure, when the base station does not configure a port selection rule, the UE may determine the target DMRS port based on a predefined port selection rule. In another embodiment of the present disclosure, when the base station does not configure the alternate mapping parameter K, the UE may determine the target DMRS port based on the predefined alternate mapping parameter K.

[0187] In one embodiment of the present disclosure, the alternating mapping parameter K is used to indicate the number of alternating mapped DMRS ports supported by the UE on the PT-RS port, K is a positive integer, and 2≤K≤the number of DMRS ports in the DMRS port group associated with the PT-RS port.

[0188] For example, when the alternating mapping parameter K corresponding to a PT-RS port is 2, it indicates that the PT-RS port supports alternating mapping between two DMRS ports. Thus, the UE can select two DMRS ports from the PT-RS port according to the port selection rule, and use these two DMRS ports as the corresponding target DMRS ports for transmitting the PT-RS at each subsequent transmission opportunity, and ensure that the corresponding target DMRS ports of two adjacent transmission opportunities are different.

[0189] It should be noted that, in the embodiment of the present disclosure, one PT-RS port corresponds to one alternating mapping parameter K. Furthermore, in one embodiment of the present disclosure, the alternating mapping parameter K corresponding to different PT-RS ports may be the same. In another embodiment of the present disclosure, the alternating mapping parameter K corresponding to different PT-RS ports may be different.

[0190] And, in one embodiment of the present disclosure, the alternating mapping parameter K may be equal to the number of DMRS port groups associated with the PT-RS port. In another embodiment of the present disclosure, the alternating mapping parameter K may be less than the number of DMRS port groups associated with the PT-RS port.

[0191] In one embodiment of the present disclosure, the method for a base station to configure the alternating mapping parameter K may include: the base station directly determining the alternating mapping parameter.

[0192] In another embodiment of the present disclosure, a method for configuring an alternating mapping parameter K by a base station may include: a UE transmitting an alternating mapping support parameter K1 to the base station, where the alternating mapping support parameter K1 is used to indicate the number of alternating mapping DMRS ports supported by the UE on each PT-RS port, K1 being a positive integer, and 2≤K1≤the number of DMRS ports in a DMRS port group associated with the PT-RS port. The base station determines the alternating mapping parameter K based on the alternating mapping support parameter K1, where K≤K1, and configures the determined alternating mapping parameter K to the UE.

[0193] The port selection rule may include defining a priority of channel quality of channels corresponding to DMRS ports based on a possible distribution probability of quality of the data layer, and selecting a target DMRS port based on the priority. For example, the first K DMRS ports of the channel quality corresponding to the channels in the DMRS port group defined based on the possible distribution probability of quality of the data layer may be determined as the target DMRS ports.

[0194] Step 504: Acquire a target DMRS port associated with uplink PT-RS transmission, wherein the target DMRS port is used for PT-RS transmission at the first PUSCH transmission opportunity.

[0195] In one embodiment of the present disclosure, a detailed introduction to this step can be found in step 101, which will not be described in detail in this embodiment.

[0196] In one embodiment of the present disclosure, the base station may determine the target DMRS port associated with uplink PT-RS transmission from the PR-RS port-associated DMRS port group based on the port selection rule configured for the UE. In one embodiment of the present disclosure, the DMRS port group associated with the PR-RS port may be configured by the base station through higher layer signaling.

[0197] Specifically, it can be seen from step 503 that the port selection rule configured by the base station is: based on the possible distribution probability of the quality of the data layer, the priority of the channel quality of the channel corresponding to the DMRS port is defined, and the target DMRS port is selected according to the priority. Based on this, in one embodiment of the present disclosure, the method for the base station to configure the target DMRS port associated with the uplink PT-RS transmission according to the port selection rule may include: determining the DMRS port with the highest channel quality in the DMRS port group associated with the PR-RS port as the target DMRS port.

[0198] Step 505: The UE determines the corresponding target DMRS port for sending the PT-RS at each subsequent transmission opportunity according to the alternating mapping configuration instruction, the predefined port selection rule, and the alternating mapping parameter K.

[0199] In another embodiment of the present disclosure, the UE may include a single PR-RS port. In another embodiment of the present disclosure, the UE may include multiple PR-RS ports.

[0200] In one embodiment of the present disclosure, when the UE includes a single PT-RS port, the single PT-RS port is associated with a group of DMRS ports to which the UE is scheduled and allocated; and the method for determining the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity may be: for the single PT-RS port, determining the corresponding target DMRS port for each subsequent transmission opportunity from the associated DMRS port group according to the port selection rule and the alternating mapping parameter K.

[0201] In another embodiment of the present disclosure, when a UE includes multiple PT-RS ports, each PT-RS port is associated with a DMRS port group, wherein the DMRS port group associated with each PT-RS port is configured by the base station through higher-layer signaling; and each PT-RS port is associated with an alternating mapping parameter K. A method for determining a target DMRS port for transmitting a PT-RS at each subsequent transmission opportunity may include: for each PT-RS port for transmitting a PT-RS, determining a target DMRS port for each subsequent transmission opportunity from the associated DMRS port group according to a port selection rule and the alternating mapping parameter K.

[0202] Furthermore, in the embodiment of the present disclosure, the UE may determine the target DMRS port corresponding to each subsequent transmission opportunity from the associated DMRS port group according to the port selection rule and the alternating mapping parameter K, which may include:

[0203] K target DMRS ports are determined from the associated DMRS port group according to the port selection rule and the alternating mapping parameter K, and then the K target DMRS ports are respectively determined as the corresponding target DMRS ports for sending PT-RS at each subsequent transmission opportunity.

[0204] For example, assuming that the UE only includes PT-RS port 0, the DMRS port group corresponding to PT-RS port 0 is: DMRS port 0, DMRS port 1, DMRS port 2, and DMRS port 3. The UE will repeatedly send PT-RS using the first transmission opportunity, the second transmission opportunity, the third transmission opportunity, and the fourth transmission opportunity, respectively. The target DMRS port configured by the base station obtained by the UE through the above step 504 is DMRS port 2, and the alternating mapping parameter K determined by the UE through the above step 503 is 2. The port selection rule is: the priority of the channel quality of the channel corresponding to the DMRS port is defined according to the possible distribution probability of the quality of the data layer, and the target DMRS port is selected according to the priority.

[0205] In another embodiment of the present disclosure, in this step, the method for the UE to determine the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity according to the alternating mapping configuration instruction according to the predefined port selection rule and the alternating mapping parameter K can be: according to the possible distribution probability of the quality of the data layer, the channel quality of the channels corresponding to DMRS port 0, DMRS port 1, DMRS port 2, and DMRS port 3 of each transmission opportunity is defined from high to low, and the first two DMRS ports of the channel quality corresponding to DMRS port 0, DMRS port 1, DMRS port 2, and DMRS port 3 of a certain transmission opportunity (i.e., the first transmission opportunity or the second transmission opportunity or the third transmission opportunity or the fourth transmission opportunity) from high to low are determined as the target DMRS ports, and in subsequent transmission opportunities, alternating mapping is performed between the first two DMRS ports.

[0206] For example, assuming that the channel quality of the channels corresponding to DMRS port 0, DMRS port 1, DMRS port 2, and DMRS port 3 at the second transmission opportunity is arranged from high to low according to the possible distribution probability of the quality of the data layer: DMRS port 0>DMRS port 1>DMRS port 2>DMRS port 3, then DMRS port 0 and DMRS port 1 can be determined as target DMRS ports, and in subsequent transmission opportunities, alternating mapping is performed between DMRS port 0 and DMRS port 1. For example, at the second transmission opportunity, PT-RS port 0 is mapped to DMRS port 0, at the third transmission opportunity, PT-RS port 0 is mapped to DMRS port 1, and at the fourth transmission opportunity, PT-RS port 0 is mapped to DMRS port 0.

[0207] Step 506: At each transmission opportunity, the PT-RS port is mapped to the corresponding target DMRS port for transmitting the PT-RS.

[0208] In one embodiment of the present disclosure, after determining the corresponding target DMRS port for sending PT-RS at each transmission opportunity, when each transmission opportunity arrives, the PT-RS port will be mapped to the corresponding target DMRS port to transmit PT-RS, thereby realizing alternating mapping.

[0209] It should be noted that, in one embodiment of the present disclosure, PT-RS is used for repeated transmission of a scheduled PUSCH, and / or, in another embodiment of the present disclosure, PT-RS is used for repeated transmission of a non-scheduled PUSCH.

[0210] In the information transmission method provided in the embodiments of the present disclosure, when repeatedly transmitting the PT-RS using multi-layer transmission technology, the PT-RS ports of two adjacent transmission opportunities are mapped to different target DMRS ports, thereby achieving alternating mapping of DMRS ports during PT-RS transmission. In other words, different channels are used to transmit the PT-RS at adjacent transmission opportunities, thus avoiding the phenomenon of "using a fixed channel to transmit the PT-RS for each transmission opportunity." This ensures the transmission accuracy of the PT-RS and, in turn, the accuracy of the phase noise estimation, solving the problem of inaccurate phase noise estimation caused by channel variations and estimation delays.

[0211] Figure 6 A flow chart of an information transmission method provided by another embodiment of the present disclosure is applied to a terminal device UE, such as Figure 6 As shown, the information transmission method may include the following steps:

[0212] Step 601: Obtain DCI sent by the base station.

[0213] In one embodiment of the present disclosure, the DCI includes a target DMRS port associated with uplink PT-RS transmission configured by the base station, and the target DMRS port configured by the base station is used for PT-RS transmission at the first PUSCH transmission opportunity.

[0214] Step 602: Determine the target DMRS port associated with uplink PT-RS transmission configured by the base station according to the DCI sent by the base station, and use the target DMRS port configured by the base station for PT-RS transmission at the first transmission opportunity.

[0215] In one embodiment of the present disclosure, a UE may obtain a target DMRS port associated with uplink PT-RS transmission, configured by the base station, based on DCI sent by the base station. The DCI may include an indicator code point, wherein the number of bits in the indicator code point corresponds to the number of PT-RS port groups included in the UE, and different numbers of bits in the indicator code point correspond to different PT-RS ports, indicating the DMRS port corresponding to the corresponding PT-RS port, and different numbers of codes in the indicator code point indicate the target DMRS port corresponding to the corresponding PT-RS port.

[0216] For example, when the UE includes only PT-RS port 0, the DMRS port group scheduled by the UE corresponding to PT-RS port 0 corresponds to a maximum of 4 uplink ports, including: DMRS port 0, DMRS port 1, DMRS port 2, and DMRS port 3. The indicator code point corresponds only to an indication of a specific associated DMRS port, wherein the correspondence between the indicator code point and the DMRS port can be as shown in Table 1.

[0217] Table 1

[0218] Indicator code point DMRS port 0 DMRS port 0 1 DMRS port 1 2 DMRS port 2 3 DMRS port 3

[0219] It can be seen from Table 1 that when the indicator code point in the DCI received by the UE is 0, it can be determined that the target DMRS port indicated by the base station is DMRS port 0; when the indicator code point in the DCI received by the UE is 1, it can be determined that the target DMRS port indicated by the base station is DMRS port 1.

[0220] Furthermore, for the case where the PT-RS reference signal has two ports, the UE includes PT-RS port 0 and PT-RS port 1. PT-RS port 0 corresponds to the DMRS port group configured by higher-layer signaling, including: DMRS port 0 and DMRS port 1; PT-RS port 1 corresponds to the DMRS association group configured by higher-layer signaling, including: DMRS port 0 and DMRS port 1. The indicator codepoint may include two bits, where the upper bit of the indicator codepoint may indicate the DMRS port corresponding to PT-RS port 0, and the lower bit of the indicator codepoint may indicate the DMRS port corresponding to PT-RS port 1. The correspondence between the indicator codepoint and the DMRS port may be as shown in Tables 2 and 3.

[0221] Table 2

[0222] Indicates the high-order bit of the code point DMRS port 0 DMRS port 0 1 DMRS port 1

[0223] Table 3

[0224] Indicates the low-order bit of the code point DMRS port 0 DMRS port 0 1 DMRS port 1

[0225] As shown in Tables 2 and 3, when the indication code point received by the UE is 01, it can be determined that the high-order bit of the indication code point is 0 and the low-order bit is 1, and then it can be determined that the target DMRS port corresponding to PT-RS port 0 indicated by the base station is DMRS port 0, and the target DMRS port corresponding to PT-RS port 1 is DMRS port 1. When the indication code point received by the UE is 10, it can be determined that the high-order bit of the indication code point is 1 and the low-order bit is 0, and then it can be determined that the target DMRS port corresponding to PT-RS port 0 indicated by the base station is DMRS port 1, and the target DMRS port corresponding to PT-RS port 1 is DMRS port 0.

[0226] Therefore, the UE can determine the target DMRS port indicated by the base station through the indication code point included in the DCI sent by the base station.

[0227] Step 603: Determine the corresponding target DMRS port for sending the PT-RS at each subsequent transmission opportunity.

[0228] In one embodiment of the present disclosure, the execution method of this step may refer to the above-mentioned steps 202-205, steps 302-305, steps 402-405, and steps 502-505, which will not be described in detail in this embodiment of the present disclosure.

[0229] Step 604: At each transmission opportunity, the PT-RS port is mapped to the corresponding target DMRS port for transmitting the PT-RS.

[0230] In one embodiment of the present disclosure, after determining the corresponding target DMRS port for sending PT-RS at each transmission opportunity, when each transmission opportunity arrives, the PT-RS port will be mapped to the corresponding target DMRS port to transmit PT-RS, thereby realizing alternating mapping.

[0231] It should be noted that, in one embodiment of the present disclosure, PT-RS is used for repeated transmission of a scheduled PUSCH, and / or, in another embodiment of the present disclosure, PT-RS is used for repeated transmission of a non-scheduled PUSCH.

[0232] In the information transmission method provided in the embodiments of the present disclosure, when repeatedly transmitting the PT-RS using multi-layer transmission technology, the PT-RS ports of two adjacent transmission opportunities are mapped to different target DMRS ports, thereby achieving alternating mapping of DMRS ports during PT-RS transmission. In other words, different channels are used to transmit the PT-RS at adjacent transmission opportunities, thus avoiding the phenomenon of "using a fixed channel to transmit the PT-RS for each transmission opportunity." This ensures the transmission accuracy of the PT-RS and, in turn, the accuracy of the phase noise estimation, solving the problem of inaccurate phase noise estimation caused by channel variations and estimation delays.

[0233] Figure 7 A flow chart of an information transmission method provided by another embodiment of the present disclosure is applied to a base station, such as Figure 7 As shown, the information transmission method may include the following steps:

[0234] Step 701: Send a target DMRS port associated with uplink PT-RS transmission to a UE, wherein the target DMRS port is used for transmission of PT-RS at the first transmission opportunity of a PUSCH.

[0235] In one embodiment of the present disclosure, a detailed introduction to this step can be found in step 101, which will not be described in detail in this embodiment.

[0236] It should be noted that, in one embodiment of the present disclosure, PT-RS is used for repeated transmission of a scheduled PUSCH, and / or, in another embodiment of the present disclosure, PT-RS is used for repeated transmission of a non-scheduled PUSCH.

[0237] In the information transmission method provided by the embodiment of the present disclosure, when repeatedly transmitting PT-RS using multi-layer transmission technology, the target DMRS port configured by the base station is mainly used for the transmission of PT-RS at the first transmission opportunity of PUSCH, and each subsequent transmission opportunity can correspond to other DMRS ports, so that the PT-RS ports of two adjacent transmission opportunities will be mapped to different target DMRS ports, thereby realizing the alternating mapping of DMRS ports during PT-RS transmission. That is, different channels will be used to transmit PT-RS at adjacent transmission opportunities, which can avoid the phenomenon of "using a fixed channel to transmit PT-RS for each transmission opportunity", ensure the transmission accuracy of PT-RS, and then ensure the accuracy of phase noise estimation, and solve the problem of inaccurate phase noise estimation caused by channel changes and estimation delays.

[0238] Figure 8 A flow chart of an information transmission method provided by another embodiment of the present disclosure is applied to a base station, such as Figure 8 As shown, the information transmission method may include the following steps:

[0239] Step 801: Receive UE capability information sent by the UE and send an alternate mapping configuration instruction to the UE, wherein the UE capability information is used to indicate whether the UE has the transmission capability to support PT-RS alternate mapping, and the alternate mapping configuration instruction is used to instruct the UE to transmit PT-RS according to PT-RS alternate mapping.

[0240] In one embodiment of the present disclosure, when the UE capability information received by the base station indicates that the UE has the transmission capability to support PT-RS alternating mapping, the base station can send an alternating mapping configuration instruction to the UE, so that the UE can determine the corresponding target DMRS port for sending PT-RS in each subsequent transmission opportunity according to the alternating mapping configuration instruction, and ensure that the corresponding target DMRS ports of two adjacent transmission opportunities are different.

[0241] In another embodiment of the present disclosure, when the UE capability information received by the base station indicates that the UE has the transmission capability to support PT-RS alternating mapping, the base station may not send the alternating mapping configuration instruction to the UE, so that the UE transmits PT-RS at each transmission opportunity according to the target DMRS port configured by the base station in the subsequent step 802.

[0242] Step 802: Send a target DMRS port associated with uplink PT-RS transmission to the UE, wherein the target DMRS port is used for PT-RS transmission at the first PUSCH transmission opportunity.

[0243] In one embodiment of the present disclosure, a detailed introduction to this step can be found in step 101, which will not be described in detail in this embodiment.

[0244] It should be noted that, in one embodiment of the present disclosure, PT-RS is used for repeated transmission of a scheduled PUSCH, and / or, in another embodiment of the present disclosure, PT-RS is used for repeated transmission of a non-scheduled PUSCH.

[0245] In the information transmission method provided by the embodiment of the present disclosure, when repeatedly transmitting PT-RS using multi-layer transmission technology, the target DMRS port configured by the base station is mainly used for the transmission of PT-RS at the first transmission opportunity of PUSCH, and each subsequent transmission opportunity can correspond to other DMRS ports, so that the PT-RS ports of two adjacent transmission opportunities will be mapped to different target DMRS ports, thereby realizing the alternating mapping of DMRS ports during PT-RS transmission. That is, different channels will be used to transmit PT-RS at adjacent transmission opportunities, which can avoid the phenomenon of "using a fixed channel to transmit PT-RS for each transmission opportunity", ensure the transmission accuracy of PT-RS, and then ensure the accuracy of phase noise estimation, and solve the problem of inaccurate phase noise estimation caused by channel changes and estimation delays.

[0246] Figure 9 A flow chart of an information transmission method provided by another embodiment of the present disclosure is applied to a base station, such as Figure 9 As shown, the information transmission method may include the following steps:

[0247] Step 901: Receive UE capability information sent by the UE and send an alternate mapping configuration instruction to the UE, wherein the UE capability information is used to indicate whether the UE has the transmission capability to support PT-RS alternate mapping, and the alternate mapping configuration instruction is used to instruct the UE to transmit PT-RS according to PT-RS alternate mapping.

[0248] In one embodiment of the present disclosure, when the UE capability information received by the base station indicates that the UE has the transmission capability to support PT-RS alternating mapping, the base station can send an alternating mapping configuration instruction to the UE, so that the UE can determine the corresponding target DMRS port for sending PT-RS in each subsequent transmission opportunity according to the alternating mapping configuration instruction, and ensure that the corresponding target DMRS ports of two adjacent transmission opportunities are different.

[0249] In another embodiment of the present disclosure, when the UE capability information received by the base station indicates that the UE has the transmission capability to support PT-RS alternating mapping, the base station may not send the alternating mapping configuration instruction to the UE, so that the UE transmits PT-RS at each transmission opportunity according to the target DMRS port configured by the base station in the subsequent step 903.

[0250] Step 902: Send the alternate mapping parameter K and / or the port selection rule to the UE via high-layer signaling.

[0251] In another embodiment of the present disclosure, the base station may configure a port selection rule and / or an alternate mapping parameter K for the UE. It should be noted that, in one embodiment of the present disclosure, when the base station does not configure a port selection rule, the UE may determine the target DMRS port based on a predefined port selection rule. In another embodiment of the present disclosure, when the base station does not configure the alternate mapping parameter K, the UE may determine the target DMRS port based on the predefined alternate mapping parameter K.

[0252] In one embodiment of the present disclosure, the alternating mapping parameter K is used to indicate the number of alternating mapped DMRS ports supported by the UE on the PT-RS port, K is a positive integer, and 2≤K≤the number of DMRS ports in the DMRS port group associated with the PT-RS port.

[0253] For example, when the alternating mapping parameter K corresponding to a PT-RS port is 2, it indicates that the PT-RS port supports alternating mapping between two DMRS ports. Thus, the UE can select two DMRS ports from the PT-RS port according to the port selection rule, and use these two DMRS ports as the corresponding target DMRS ports for transmitting the PT-RS at each subsequent transmission opportunity, and ensure that the corresponding target DMRS ports of two adjacent transmission opportunities are different.

[0254] It should be noted that, in the embodiment of the present disclosure, one PT-RS port corresponds to one alternating mapping parameter K. Furthermore, in one embodiment of the present disclosure, the alternating mapping parameter K corresponding to different PT-RS ports may be the same. In another embodiment of the present disclosure, the alternating mapping parameter K corresponding to different PT-RS ports may be different.

[0255] And, in one embodiment of the present disclosure, the alternating mapping parameter K may be equal to the number of DMRS port groups associated with the PT-RS port. In another embodiment of the present disclosure, the alternating mapping parameter K may be less than the number of DMRS port groups associated with the PT-RS port.

[0256] In one embodiment of the present disclosure, the port selection rule may include defining a priority of the channel quality of the channels corresponding to the DMRS ports based on a possible distribution probability of the quality of the data layer, and selecting the target DMRS port based on the priority. For example, the first K DMRS ports with the highest to lowest channel quality corresponding to the channels in the DMRS port group defined based on the possible distribution probability of the quality of the data layer may be determined as the target DMRS ports. In another embodiment of the present disclosure, the port selection rule may include randomly selecting K DMRS ports in the DMRS port group as the target DMRS ports.

[0257] It should be noted that, in one embodiment of the present disclosure, step 901 and step 902 may also be performed in one step.

[0258] Step 903: Send a target DMRS port associated with uplink PT-RS transmission to the UE, wherein the target DMRS port is used for PT-RS transmission at the first PUSCH transmission opportunity.

[0259] In one embodiment of the present disclosure, a detailed introduction to this step can be found in step 101, which will not be described in detail in this embodiment.

[0260] In one embodiment of the present disclosure, the base station may determine the target DMRS port associated with uplink PT-RS transmission from the PR-RS port-associated DMRS port group based on the port selection rule configured for the UE. In one embodiment of the present disclosure, the DMRS port group associated with the PR-RS port may be configured by the base station through higher layer signaling.

[0261] It should be noted that, in one embodiment of the present disclosure, PT-RS is used for repeated transmission of a scheduled PUSCH, and / or, in another embodiment of the present disclosure, PT-RS is used for repeated transmission of a non-scheduled PUSCH.

[0262] In the information transmission method provided by the embodiment of the present disclosure, when repeatedly transmitting PT-RS using multi-layer transmission technology, the target DMRS port configured by the base station is mainly used for the transmission of PT-RS at the first transmission opportunity of PUSCH, and each subsequent transmission opportunity can correspond to other DMRS ports, so that the PT-RS ports of two adjacent transmission opportunities will be mapped to different target DMRS ports, thereby realizing the alternating mapping of DMRS ports during PT-RS transmission. That is, different channels will be used to transmit PT-RS at adjacent transmission opportunities, which can avoid the phenomenon of "using a fixed channel to transmit PT-RS for each transmission opportunity", ensure the transmission accuracy of PT-RS, and then ensure the accuracy of phase noise estimation, and solve the problem of inaccurate phase noise estimation caused by channel changes and estimation delays.

[0263] Figure 10 A flow chart of an information transmission method provided by another embodiment of the present disclosure is applied to a base station, such as Figure 10 As shown, the information transmission method may include the following steps:

[0264] Step 1001: Receive UE capability information sent by a UE, and send an alternate mapping configuration instruction to the UE, wherein the UE capability information is used to indicate whether the UE has a transmission capability to support PT-RS alternate mapping.

[0265] In one embodiment of the present disclosure, when the UE capability information received by the base station indicates that the UE has the transmission capability of supporting PT-RS alternating mapping, the base station can send an alternating mapping configuration instruction to the UE, and the alternating mapping configuration instruction is used to instruct the UE to send PT-RS according to the PT-RS alternating mapping, so that the UE can determine the corresponding target DMRS port for sending PT-RS in each subsequent transmission opportunity according to the alternating mapping configuration instruction, and ensure that the corresponding target DMRS ports of two adjacent transmission opportunities are different.

[0266] In another embodiment of the present disclosure, when the UE capability information received by the base station indicates that the UE has the transmission capability to support PT-RS alternating mapping, the base station may not send the alternating mapping configuration instruction to the UE, so that the UE transmits PT-RS at each transmission opportunity according to the target DMRS port configured by the base station in the subsequent step 1003.

[0267] Step 1002: Send the alternating mapping parameter K and / or the port selection rule to the UE via high-layer signaling.

[0268] In another embodiment of the present disclosure, the base station may configure a port selection rule and / or an alternate mapping parameter K for the UE. It should be noted that, in one embodiment of the present disclosure, when the base station does not configure a port selection rule, the UE may determine the target DMRS port based on a predefined port selection rule. In another embodiment of the present disclosure, when the base station does not configure the alternate mapping parameter K, the UE may determine the target DMRS port based on the predefined alternate mapping parameter K.

[0269] In one embodiment of the present disclosure, the alternating mapping parameter K is used to indicate the number of alternating mapped DMRS ports supported by the UE on the PT-RS port, K is a positive integer, and 2≤K≤the number of DMRS ports in the DMRS port group associated with the PT-RS port.

[0270] For example, when the alternating mapping parameter K corresponding to a PT-RS port is 2, it indicates that the PT-RS port supports alternating mapping between two DMRS ports. Thus, the UE can select two DMRS ports from the PT-RS port according to the port selection rule, and use these two DMRS ports as the corresponding target DMRS ports for transmitting the PT-RS at each subsequent transmission opportunity, and ensure that the corresponding target DMRS ports of two adjacent transmission opportunities are different.

[0271] It should be noted that, in the embodiment of the present disclosure, one PT-RS port corresponds to one alternating mapping parameter K. Furthermore, in one embodiment of the present disclosure, the alternating mapping parameter K corresponding to different PT-RS ports may be the same. In another embodiment of the present disclosure, the alternating mapping parameter K corresponding to different PT-RS ports may be different.

[0272] And, in one embodiment of the present disclosure, the alternating mapping parameter K may be equal to the number of DMRS port groups associated with the PT-RS port. In another embodiment of the present disclosure, the alternating mapping parameter K may be less than the number of DMRS port groups associated with the PT-RS port.

[0273] In one embodiment of the present disclosure, the port selection rule may include defining a priority of the channel quality of the channels corresponding to the DMRS ports based on a possible distribution probability of the quality of the data layer, and selecting the target DMRS port based on the priority. For example, the first K DMRS ports with the highest to lowest channel quality corresponding to the channels in the DMRS port group defined based on the possible distribution probability of the quality of the data layer may be determined as the target DMRS ports. In another embodiment of the present disclosure, the port selection rule may include randomly selecting K DMRS ports in the DMRS port group as the target DMRS ports.

[0274] Step 1003: Send DCI to the UE, where the DCI includes a target DMRS port to configure the target DMRS port associated with uplink PT-RS transmission for the UE, wherein the target DMRS port configured by the base station is used for PT-RS transmission of the first PUSCH transmission opportunity.

[0275] In one embodiment of the present disclosure, a detailed description of this step can be found in steps 601-602, which will not be described in detail in this embodiment.

[0276] It should be noted that, in one embodiment of the present disclosure, PT-RS is used for repeated transmission of a scheduled PUSCH, and / or, in another embodiment of the present disclosure, PT-RS is used for repeated transmission of a non-scheduled PUSCH.

[0277] In the information transmission method provided by the embodiment of the present disclosure, when repeatedly transmitting PT-RS using multi-layer transmission technology, the target DMRS port configured by the base station is mainly used for the transmission of PT-RS at the first transmission opportunity of PUSCH, and each subsequent transmission opportunity can correspond to other DMRS ports, so that the PT-RS ports of two adjacent transmission opportunities will be mapped to different target DMRS ports, thereby realizing the alternating mapping of DMRS ports during PT-RS transmission. That is, different channels will be used to transmit PT-RS at adjacent transmission opportunities, which can avoid the phenomenon of "using a fixed channel to transmit PT-RS for each transmission opportunity", ensure the transmission accuracy of PT-RS, and then ensure the accuracy of phase noise estimation, and solve the problem of inaccurate phase noise estimation caused by channel changes and estimation delays.

[0278] Figure 11 This is a structural diagram of an information transmission device provided by an embodiment of the present disclosure, such as Figure 11 As shown, the apparatus 1100 may include:

[0279] An acquisition module 1101 is configured to obtain a target demodulation reference signal (DMRS) port associated with uplink PT-RS transmission, wherein the target DMRS port is used for PT-RS transmission at the first transmission opportunity of a physical uplink shared channel (PUSCH);

[0280] a determination module 1102 configured to determine a target DMRS port corresponding to each subsequent transmission opportunity for transmitting a PT-RS; wherein one PT-RS port corresponds to one target DMRS port at each transmission opportunity, the target DMRS port being included in a DMRS port group associated with the corresponding PT-RS port, and the target DMRS ports corresponding to two adjacent transmission opportunities being different;

[0281] The mapping module 1103 is configured to map the PT-RS port to the corresponding target DMRS port at each transmission opportunity for transmitting the PT-RS.

[0282] In the information transmission device provided in the embodiment of the present disclosure, when repeatedly transmitting PT-RS using multi-layer transmission technology, the target DMRS port configured by the base station is mainly used for the transmission of PT-RS at the first transmission opportunity of PUSCH, and each subsequent transmission opportunity can correspond to other DMRS ports, so that the PT-RS ports of two adjacent transmission opportunities will be mapped to different target DMRS ports, thereby realizing the alternating mapping of DMRS ports during PT-RS transmission. That is, different channels will be used to transmit PT-RS at adjacent transmission opportunities, which can avoid the phenomenon of "using a fixed channel to transmit PT-RS at each transmission opportunity", ensure the transmission accuracy of PT-RS, and then ensure the accuracy of phase noise estimation, and solve the problem of inaccurate phase noise estimation caused by channel changes and estimation delays.

[0283] In one embodiment of the present disclosure, the apparatus 1100 is further configured to:

[0284] Send UE capability information to the base station, where the UE capability information indicates whether the UE has the ability to support PT-RS alternating mapping.

[0285] When the UE capability information indicates that the UE has a transmission capability that supports PT-RS alternate mapping, obtaining an alternate mapping configuration instruction sent by the base station, where the alternate mapping configuration instruction is used to instruct the UE to transmit PT-RS according to the PT-RS alternate mapping;

[0286] The UE determines the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity according to the alternating mapping configuration instruction, the predefined port selection rule and the alternating mapping parameter K; wherein the alternating mapping parameter K is used to indicate the number of alternating mapping DMRS ports supported by the UE on each PT-RS port, K is a positive integer, 2≤K≤the number of DMRS ports in the DMRS port group associated with the PT-RS port.

[0287] Furthermore, in another embodiment of the present disclosure, the apparatus 1100 is further configured to:

[0288] Send UE capability information to the base station, where the UE capability information indicates whether the UE has the ability to support PT-RS alternating mapping.

[0289] When the UE capability information indicates that the UE has a transmission capability supporting PT-RS alternate mapping, obtaining an alternate mapping configuration instruction sent by the base station, the alternate mapping configuration instruction being used to instruct the UE to transmit PT-RS according to the PT-RS alternate mapping; and simultaneously obtaining an alternate mapping parameter K and / or a port selection rule configured by the base station; wherein the alternate mapping parameter K is used to indicate the number of alternately mapped DMRS ports supported by the UE on each PT-RS port, K being a positive integer, and 2≤K≤the number of DMRS ports in the DMRS port group associated with the PT-RS port;

[0290] The UE determines the corresponding target DMRS port for sending the PT-RS at each subsequent transmission opportunity according to the alternating mapping configuration instruction, the port selection rule, and the alternating mapping parameter K.

[0291] Furthermore, in another embodiment of the present disclosure, the alternating mapping parameter K and / or the port selection rule are configured by the base station through high-layer signaling.

[0292] Furthermore, in another embodiment of the present disclosure, the UE includes a single PT-RS port, and the PT-RS port is associated with a group of DMRS ports scheduled and allocated to the UE.

[0293] Furthermore, in another embodiment of the present disclosure, the UE includes multiple PT-RS ports, each PT-RS port is associated with a DMRS port group, wherein the DMRS port group associated with each PT-RS port is configured by the base station through higher layer signaling;

[0294] And each PT-RS port corresponds to an alternating mapping parameter K that is predefined or configured by the base station.

[0295] Furthermore, in another embodiment of the present disclosure, the acquisition module 1101 is further configured to:

[0296] Acquire downlink control information DCI sent by the base station, where the DCI includes a target DMRS port.

[0297] Furthermore, in another embodiment of the present disclosure, the PT-RS is used for repeated transmission of a scheduled PUSCH and / or repeated transmission of a non-scheduled PUSCH.

[0298] Figure 12 This is a structural diagram of an information transmission device provided by another embodiment of the present disclosure, such as Figure 12 As shown, the apparatus 1200 may include:

[0299] The sending module 1201 is configured to send a target DMRS port associated with uplink PT-RS transmission to the UE, wherein the target DMRS port is used for transmission of PT-RS at the first transmission opportunity of the PUSCH.

[0300] In the information transmission device provided in the embodiment of the present disclosure, when repeatedly transmitting PT-RS using multi-layer transmission technology, the target DMRS port configured by the base station is mainly used for the transmission of PT-RS at the first transmission opportunity of PUSCH, and each subsequent transmission opportunity can correspond to other DMRS ports, so that the PT-RS ports of two adjacent transmission opportunities will be mapped to different target DMRS ports, thereby realizing the alternating mapping of DMRS ports during PT-RS transmission. That is, different channels will be used to transmit PT-RS at adjacent transmission opportunities, which can avoid the phenomenon of "using a fixed channel to transmit PT-RS at each transmission opportunity", ensure the transmission accuracy of PT-RS, and then ensure the accuracy of phase noise estimation, and solve the problem of inaccurate phase noise estimation caused by channel changes and estimation delays.

[0301] In one embodiment of the present disclosure, the apparatus 1200 is further configured to:

[0302] receiving UE capability information sent by the UE, where the UE capability information is used to indicate whether the UE has a transmission capability that supports PT-RS alternating mapping;

[0303] When the UE capability information received by the base station indicates that the UE has the transmission capability of supporting PT-RS alternate mapping, the base station sends an alternate mapping configuration instruction to the UE, where the alternate mapping configuration instruction is used to instruct the UE to transmit PT-RS according to the PT-RS alternate mapping.

[0304] Furthermore, in another embodiment of the present disclosure, the apparatus 1200 is further configured to:

[0305] The alternating mapping parameter K and / or the port selection rule are sent to the UE via high-layer signaling.

[0306] Furthermore, in another embodiment of the present disclosure, the sending module 1201 is further configured to: send DCI to the UE, where the DCI includes a target DMRS port.

[0307] Furthermore, in another embodiment of the present disclosure, the UE includes a single PT-RS port, and the PT-RS port is associated with a group of DMRS ports scheduled and allocated to the UE.

[0308] Furthermore, in another embodiment of the present disclosure, the UE includes multiple PT-RS ports, each PT-RS port is associated with a DMRS port group, wherein the DMRS port group associated with each PT-RS port is configured by the base station through higher layer signaling;

[0309] And each PT-RS port corresponds to an alternating mapping parameter K that is predefined or configured by the base station.

[0310] In order to implement the above embodiments, the present disclosure also proposes a computer storage medium.

[0311] The computer storage medium provided in the embodiment of the present disclosure stores an executable program; after the executable program is executed by the processor, it can achieve the following Figures 1 to 6 or Figures 7 to 10 A method for determining any of the information transmission methods shown.

[0312] In order to implement the above embodiments, the present disclosure also proposes a computer program product, including a computer program, which implements the following when executed by a processor: Figures 1 to 6 or Figures 7 to 10 A method for determining any of the information transmission methods shown.

[0313] In addition, in order to implement the above embodiment, the present disclosure also proposes a computer program, which, when executed by a processor, can implement the following Figures 1 to 6 or Figures 7 to 10 Any of the information transmission methods shown.

[0314] Figure 13 1 is a block diagram of a terminal device UE 1300 provided by one embodiment of the present disclosure. For example, UE 1300 can be a mobile phone, a computer, a digital broadcast terminal device, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0315] Reference Figure 13 UE 1300 may include at least one of the following components: a processing component 1302 , a memory 1304 , a power component 1306 , a multimedia component 1308 , an audio component 1310 , an input / output (I / O) interface 1312 , a sensor component 1314 , and a communication component 1316 .

[0316] Processing component 1302 generally controls the overall operation of UE 1300, such as operations associated with display, phone calls, data communications, camera operation, and recording operations. Processing component 1302 may include at least one processor 1320 to execute instructions to perform all or part of the steps of the above-described method. In addition, processing component 1302 may include at least one module to facilitate interaction between processing component 1302 and other components. For example, processing component 1302 may include a multimedia module to facilitate interaction between multimedia component 1308 and processing component 1302.

[0317] The memory 1304 is configured to store various types of data to support the operation of the UE 1300. Examples of such data include instructions for any application or method operating on the UE 1300, contact data, phone book data, messages, pictures, videos, etc. The memory 1304 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0318] The power component 1306 provides power to various components of the UE 1300. The power component 1306 may include a power management system, at least one power supply, and other components associated with generating, managing, and distributing power to the UE 1300.

[0319] The multimedia component 1308 includes a screen that provides an output interface between the UE 1300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes at least one touch sensor to sense touches, slides, and gestures on the touch panel. The touch sensor may not only sense the boundaries of a touch or slide action, but also detect the wake-up time and pressure associated with the touch or slide action. In some embodiments, the multimedia component 1308 includes a front camera and / or a rear camera. When the UE 1300 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0320] The audio component 1310 is configured to output and / or input audio signals. For example, the audio component 1310 includes a microphone (MIC) that is configured to receive external audio signals when the UE 1300 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 1304 or transmitted via the communication component 1316. In some embodiments, the audio component 1310 further includes a speaker for outputting audio signals.

[0321] I / O interface 1312 provides an interface between processing component 1302 and peripheral interface modules, such as a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to, a home button, volume buttons, a start button, and a lock button.

[0322] Sensor assembly 1314 includes at least one sensor for providing various status assessments for UE 1300. For example, sensor assembly 1314 can detect the open / closed state of device 1300, the relative positioning of components, such as the display and keypad of UE 1300. Sensor assembly 1314 can also detect changes in the position of UE 1300 or a component of UE 1300, the presence or absence of user contact with UE 1300, the orientation or acceleration / deceleration of UE 1300, and changes in the temperature of UE 1300. Sensor assembly 1314 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 1314 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 1314 may also include an accelerometer, a gyroscope, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0323] The communication component 1316 is configured to facilitate wired or wireless communication between UE 1300 and other devices. UE 1300 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 1316 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1316 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0324] In an exemplary embodiment, UE 1300 may be implemented by at least one application-specific integrated circuit (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), controller, microcontroller, microprocessor, or other electronic component to perform the above method.

[0325] Figure 14 1 is a schematic diagram of the structure of a base station 1400 provided in an embodiment of the present application. For example, the base station 1400 can be provided as a base station. Figure 14 , the base station 1400 includes a processing component 1422, which further includes at least one processor, and a memory resource represented by a memory 1432 for storing instructions executable by the processing component 1422, such as an application. The application stored in the memory 1432 may include one or more modules, each corresponding to a set of instructions. In addition, the processing component 1422 is configured to execute instructions to perform any of the aforementioned methods applied to the base station, such as Figures 6-10 Any of the methods shown.

[0326] The base station 1400 may also include a power supply component 1426 configured to perform power management for the base station 1400, a wired or wireless network interface 1450 configured to connect the base station 1400 to a network, and an input / output (I / O) interface 1458. The base station 1400 may operate based on an operating system stored in the memory 1432, such as Windows Server™, MacOS X™, Unix™, Linux™, FreeBSD™, or the like.

[0327] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0328] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An information transmission method, characterized in that: Applicable to terminal equipment UE, including: Acquire a target demodulation reference signal (DMRS) port associated with uplink PT-RS transmission, wherein the target DMRS port is used for PT-RS transmission at a first transmission opportunity of a physical uplink shared channel (PUSCH); Determining a target DMRS port corresponding to each subsequent transmission opportunity for sending a PT-RS; wherein one PT-RS port corresponds to one target DMRS port in each transmission opportunity, the target DMRS port is included in a DMRS port group associated with the corresponding PT-RS port, and the target DMRS ports corresponding to two adjacent transmission opportunities are different; At each transmission opportunity, a PT-RS port is mapped to a corresponding target DMRS port for transmitting the PT-RS; The method further includes: sending UE capability information to a base station, where the UE capability information is used to indicate whether the UE has a transmission capability that supports PT-RS alternating mapping; When the UE capability information indicates that the UE has a transmission capability of supporting PT-RS alternating mapping, obtaining an alternating mapping configuration instruction sent by the base station, where the alternating mapping configuration instruction is used to instruct the UE to transmit the PT-RS according to the PT-RS alternating mapping; The number of target DMRS ports mapped by the PT-RS port is ≥2.

2. The method according to claim 1, wherein Also includes: The UE determines the corresponding target DMRS port for sending PT-RS at each subsequent transmission opportunity according to the alternating mapping configuration instruction, a predefined port selection rule, and an alternating mapping parameter K; wherein the alternating mapping parameter K is used to indicate the number of alternating mapping DMRS ports supported by the UE on each PT-RS port, and K is a positive integer, 2≤K≤the number of DMRS ports in the DMRS port group associated with the PT-RS port.

3. The method according to claim 1, wherein Also includes: Obtaining an alternate mapping parameter K and / or a port selection rule configured by the base station; wherein the alternate mapping parameter K is used to indicate the number of alternately mapped DMRS ports supported by the UE on each PT-RS port, and K is a positive integer, 2≤K≤the number of DMRS ports in the DMRS port group associated with the PT-RS port; The UE determines, according to the alternating mapping configuration instruction, the port selection rule and the alternating mapping parameter K, a corresponding target DMRS port for sending the PT-RS at each subsequent transmission opportunity.

4. The method according to claim 3, wherein The alternating mapping parameter K and / or the port selection rule are configured by the base station through high-layer signaling.

5. The method according to claim 2 or 3, wherein: The UE includes a single PT-RS port, and the PT-RS port is associated with a group of DMRS ports to which the UE is scheduled.

6. The method according to claim 2 or 3, wherein: The UE includes multiple PT-RS ports, each PT-RS port is associated with a DMRS port group, wherein the DMRS port group associated with each PT-RS port is configured by the base station through high-layer signaling; And each PT-RS port corresponds to an alternating mapping parameter K that is predefined or configured by the base station.

7. The method according to claim 1, wherein The acquiring of a target DMRS port associated with uplink PT-RS transmission includes: Acquire downlink control information DCI sent by a base station, wherein the DCI includes the target DMRS port.

8. The method according to claim 1, wherein The PT-RS is used for repeated transmission of a scheduled PUSCH and / or repeated transmission of a non-scheduled PUSCH.

9. An information transmission method, characterized in that: Applied to base stations, including: Sending a target DMRS port associated with uplink PT-RS transmission to the UE, wherein the target DMRS port is used for transmission of the PT-RS at the first transmission opportunity of the PUSCH; wherein the target DMRS port is used to enable the UE to determine a corresponding target DMRS port for transmitting the PT-RS at each subsequent transmission opportunity; wherein one PT-RS port corresponds to one target DMRS port at each transmission opportunity, the target DMRS port is included in a DMRS port group associated with the corresponding PT-RS port, and the corresponding target DMRS ports of two adjacent transmission opportunities are different; Among them, also include: receiving UE capability information sent by the UE, wherein the UE capability information is used to indicate whether the UE has a transmission capability that supports PT-RS alternating mapping; When the UE capability information received by the base station indicates that the UE has a transmission capability of supporting PT-RS alternating mapping, sending an alternating mapping configuration instruction to the UE, where the alternating mapping configuration instruction is used to instruct the UE to transmit the PT-RS according to the PT-RS alternating mapping; The number of target DMRS ports mapped by the PT-RS port is ≥2.

10. The method according to claim 9, wherein Also includes: The alternate mapping parameter K and / or the port selection rule are sent to the UE through high-layer signaling.

11. The method according to claim 9, wherein The sending, to the UE, a target DMRS port associated with uplink PT-RS transmission, includes: Sending DCI to the UE, where the DCI includes the target DMRS port.

12. The method according to claim 9, wherein The UE includes a single PT-RS port, and the PT-RS port is associated with a group of DMRS ports to which the UE is scheduled.

13. The method according to claim 9, wherein The UE includes multiple PT-RS ports, each PT-RS port is associated with a DMRS port group, wherein the DMRS port group associated with each PT-RS port is configured by the base station through high-layer signaling; And each PT-RS port corresponds to an alternating mapping parameter K that is predefined or configured by the base station.

14. An information transmission device, characterized in that: include: An acquisition module is configured to acquire a target demodulation reference signal (DMRS) port associated with uplink PT-RS transmission, wherein the target DMRS port is used for PT-RS transmission at the first transmission opportunity of the PUSCH; a determination module, configured to determine a corresponding target DMRS port for transmitting a PT-RS at each subsequent transmission opportunity; wherein one PT-RS port corresponds to one target DMRS port at each transmission opportunity, the target DMRS port being included in a DMRS port group associated with the corresponding PT-RS port, and the corresponding target DMRS ports of two adjacent transmission opportunities being different; A mapping module, configured to map a PT-RS port to a corresponding target DMRS port at each transmission opportunity for transmitting the PT-RS; The method further includes: sending UE capability information to a base station, where the UE capability information is used to indicate whether the UE has a transmission capability that supports PT-RS alternating mapping; When the UE capability information indicates that the UE has a transmission capability of supporting PT-RS alternating mapping, obtaining an alternating mapping configuration instruction sent by the base station, where the alternating mapping configuration instruction is used to instruct the UE to transmit the PT-RS according to the PT-RS alternating mapping; The number of target DMRS ports mapped by the PT-RS port is ≥2.

15. An information transmission device, characterized in that: include: A sending module, configured to send a target DMRS port associated with uplink PT-RS transmission to a UE, wherein the target DMRS port is used for transmission of the PT-RS at the first transmission opportunity of the PUSCH; wherein the target DMRS port is used to enable the UE to determine a corresponding target DMRS port for transmitting the PT-RS at each subsequent transmission opportunity; wherein one PT-RS port corresponds to one target DMRS port at each transmission opportunity, the target DMRS port is included in a DMRS port group associated with the corresponding PT-RS port, and the corresponding target DMRS ports of two adjacent transmission opportunities are different; Among them, also include: receiving UE capability information sent by the UE, wherein the UE capability information is used to indicate whether the UE has a transmission capability that supports PT-RS alternating mapping; When the UE capability information received by the base station indicates that the UE has a transmission capability of supporting PT-RS alternating mapping, sending an alternating mapping configuration instruction to the UE, where the alternating mapping configuration instruction is used to instruct the UE to transmit the PT-RS according to the PT-RS alternating mapping; The number of target DMRS ports mapped by the PT-RS port is ≥2.

16. A terminal device, characterized in that: include: transceiver; Memory; A processor is connected to the transceiver and the memory, respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and is capable of implementing the method described in any one of claims 1 to 8 or 9 to 13.

17. A base station, characterized in that: include: transceiver; Memory; A processor is connected to the transceiver and the memory, respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and is capable of implementing the method described in any one of claims 1 to 8 or 9 to 13.

18. A computer storage medium, wherein: The computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by the processor, the method according to any one of claims 1 to 8 or 9 to 13 can be implemented.

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