Reference signal configuration method and apparatus

Abstract

Provided in the embodiments of the present application are a reference signal configuration method and apparatus. The method comprises: a terminal device receiving configuration information from a network device, wherein the configuration information is used for configuring the terminal device to perform 3-port uplink transmission; and the terminal device being configured with a 3-port sounding reference signal (SRS), and / or a phase tracking reference signal (PTRS) for 3-port uplink transmission, and / or a demodulation reference signal (DMRS) for 3-port uplink transmission.

Description

Reference signal configuration method and device Technical Field

[0001] The embodiments of the present application relate to the field of communication technologies. Background Art

[0002] In New Radio (NR) systems, codebook-based uplink transmissions, such as Physical Uplink Shared Channel (PUSCH) transmissions, are supported. PUSCH transmissions can use a single port, two ports, four ports, or eight ports. To support codebook-based transmissions, the Sounding Reference Signal (SRS) is also configured with a single port, two ports, four ports, or eight ports.

[0003] It should be noted that the above introduction to the technical background is merely intended to provide a clear and complete description of the technical solutions of this application and facilitate understanding by those skilled in the art. Simply because these solutions are described in the background technology section of this application, it should not be assumed that the above technical solutions are well known to those skilled in the art.

[0004] Summary of the Invention

[0005] The inventors discovered that current codebook-based uplink transmission does not support UEs with 3Tx, that is, does not support 3-port uplink transmission. There is currently no clear solution for configuring the 3-port SRS and the Phase Tracking Reference Signal (PTRS) and / or Demodulation Reference Signal (DMRS) for 3-port uplink transmission.

[0006] To address at least one of the above problems, embodiments of the present application provide a reference signal configuration method and apparatus.

[0007] According to one aspect of an embodiment of the present application, a reference signal configuration method is provided, including:

[0008] The terminal device receives configuration information from the network device; wherein the configuration information is used to configure the terminal device to perform 3-port uplink transmission;

[0009] The terminal device is configured with a 3-port sounding reference signal (SRS), and / or a phase tracking reference signal (PTRS) for 3-port uplink transmission, and / or a demodulation reference signal (DMRS) for 3-port uplink transmission.

[0010] According to another aspect of an embodiment of the present application, a reference signal configuration apparatus is provided, including:

[0011] A receiving unit, which receives configuration information from a network device; wherein the configuration information is used to configure the terminal device to perform 3-port uplink transmission;

[0012] The terminal device is configured with a 3-port sounding reference signal (SRS), and / or a phase tracking reference signal (PTRS) for 3-port uplink transmission, and / or a demodulation reference signal (DMRS) for 3-port uplink transmission.

[0013] According to another aspect of an embodiment of the present application, a reference signal configuration method is provided, including:

[0014] The network device sends configuration information to the terminal device; wherein the configuration information is used to configure the terminal device to perform 3-port uplink transmission;

[0015] The terminal device is configured with a 3-port sounding reference signal (SRS), and / or a phase tracking reference signal (PTRS) for 3-port uplink transmission, and / or a demodulation reference signal (DMRS) for 3-port uplink transmission.

[0016] According to another aspect of an embodiment of the present application, a reference signal configuration apparatus is provided, including:

[0017] a sending unit, configured to send configuration information to a terminal device, wherein the configuration information is used to configure the terminal device to perform 3-port uplink transmission;

[0018] The terminal device is configured with a 3-port sounding reference signal (SRS), and / or a phase tracking reference signal (PTRS) for 3-port uplink transmission, and / or a demodulation reference signal (DMRS) for 3-port uplink transmission.

[0019] According to another aspect of an embodiment of the present application, a communication system is provided, including:

[0020] A network device that sends configuration information to a terminal device, wherein the configuration information is used to configure the terminal device to perform 3-port uplink transmission;

[0021] A terminal device is configured with a 3-port sounding reference signal (SRS), and / or a phase tracking reference signal (PTRS) for 3-port uplink transmission, and / or a demodulation reference signal (DMRS) for 3-port uplink transmission.

[0022] One of the beneficial effects of the embodiments of the present application is that: the terminal device receives configuration information from the network device; wherein, the terminal device is configured with a 3-port SRS and / or a PTRS for a 3-port uplink transmission and / or a DMRS for a 3-port uplink transmission; thereby, the reference signal for uplink transmission can be appropriately configured to improve the performance and efficiency of uplink transmission.

[0023] With reference to the following description and accompanying drawings, specific embodiments of the present application are disclosed in detail, indicating the manner in which the principles of the present application can be employed. It should be understood that the embodiments of the present application are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present application include many variations, modifications and equivalents.

[0024] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0025] It should be emphasized that the term "include / comprising" when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The elements and features described in one figure or one embodiment of the present application can be combined with the elements and features shown in one or more other figures or embodiments. In addition, in the accompanying drawings, similar reference numerals represent corresponding parts in several figures and can be used to indicate corresponding parts used in more than one embodiment.

[0027] FIG1 is a schematic diagram of a communication system according to an embodiment of the present application;

[0028] FIG2 is a schematic diagram of a reference signal configuration method according to an embodiment of the present application;

[0029] FIG3 is a schematic diagram of a reference signal configuration method according to an embodiment of the present application;

[0030] FIG4 is a schematic diagram of a reference signal configuration device according to an embodiment of the present application;

[0031] FIG5 is a schematic diagram of a reference signal configuration device according to an embodiment of the present application;

[0032] FIG6 is a schematic diagram of a terminal device according to an embodiment of the present application;

[0033] FIG7 is a schematic diagram of a network device according to an embodiment of the present application. DETAILED DESCRIPTION

[0034] The above and other features of the present application will become apparent through the following description with reference to the accompanying drawings. In the description and the accompanying drawings, specific embodiments of the present application are disclosed in detail, which illustrate some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations and equivalents that fall within the scope of the appended claims.

[0035] In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements from the name, but do not indicate the spatial arrangement or temporal order of these elements, and these elements should not be limited by these terms. The term "and / or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having", etc. refer to the presence of the stated features, elements, components or components, but do not exclude the presence or addition of one or more other features, elements, components or components.

[0036] In the embodiments of this application, the singular forms "a," "the," etc. include plural forms and should be broadly understood to mean "a" or "a type" rather than being limited to "one." Furthermore, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. Furthermore, the term "according to" should be understood to mean "at least in part based on...", and the term "based on" should be understood to mean "at least in part based on...", unless the context clearly indicates otherwise.

[0037] In the embodiments of the present application, the term "communication network" or "wireless communication network" may refer to a network that complies with any of the following communication standards, such as Long Term Evolution (LTE), enhanced Long Term Evolution (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0038] Furthermore, communication between devices in the communication system may be carried out according to communication protocols of any stage, for example, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G, New Radio (NR), future 6G, etc., and / or other communication protocols currently known or to be developed in the future.

[0039] In the embodiments of the present application, the term "network device" refers to, for example, a device in a communication system that connects a terminal device to the communication network and provides services to the terminal device. Network devices may include, but are not limited to, the following devices: base station (BS), access point (AP), transmission reception point (TRP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

[0040] Among them, base stations may include but are not limited to: NodeB (NodeB or NB), evolved NodeB (eNodeB or eNB) and 5G base station (gNB), IAB host, etc., and may also include remote radio head (RRH, Remote Radio Head), remote radio unit (RRU, Remote Radio Unit), relay (relay) or low-power node (such as femeto, pico, etc.). The term "base station" can include some or all of their functions. Each base station can provide communication coverage for a specific geographical area. The term "cell" can refer to a base station and / or its coverage area, depending on the context in which the term is used.

[0041] In the embodiments of the present application, the term "user equipment" (UE) or "terminal equipment" (TE) refers to, for example, a device that accesses a communication network through a network device and receives network services. A terminal device can be fixed or mobile and may also be referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), a station, and so on.

[0042] Among them, terminal devices may include but are not limited to the following devices: cellular phones, personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, cordless phones, smart phones, smart watches, digital cameras, etc.

[0043] For another example, in scenarios such as the Internet of Things (IoT), the terminal device can also be a machine or device for monitoring or measurement, including but not limited to: machine type communication (MTC) terminal, vehicle-mounted communication terminal, device-to-device (D2D) terminal, machine-to-machine (M2M) terminal, and so on.

[0044] In addition, the term "network side" or "network device side" refers to one side of the network, which can be a base station or one or more network devices as described above. The term "user side" or "terminal side" or "terminal device side" refers to the user or terminal side, which can be a UE or one or more terminal devices as described above. Unless otherwise specified herein, "device" can refer to either network equipment or terminal equipment.

[0045] The following describes the scenarios of the embodiments of the present application through examples, but the present application is not limited thereto.

[0046] FIG1 is a schematic diagram of a communication system according to an embodiment of the present application, schematically illustrating a situation using a terminal device and a network device as an example. As shown in FIG1 , a communication system 100 may include a network device 101 and terminal devices 102 and 103. For simplicity, FIG1 illustrates only two terminal devices and one network device as an example, but the embodiments of the present application are not limited thereto.

[0047] In the embodiment of the present application, existing services or future services can be transmitted between the network device 101 and the terminal devices 102 and 103. For example, these services may include but are not limited to: enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable and low-latency communication (URLLC), etc.

[0048] It is worth noting that FIG1 shows that both terminal devices 102 and 103 are within the coverage range of network device 101, but the present application is not limited thereto. Both terminal devices 102 and 103 may not be within the coverage range of network device 101, or one terminal device 102 may be within the coverage range of network device 101 while the other terminal device 103 is outside the coverage range of network device 101.

[0049] In the embodiments of the present application, the signaling may be, for example, radio resource control (RRC) signaling; for example, an RRC message, including, for example, an MIB, system information, or a dedicated RRC message; or an RRC information element (RRC IE). The signaling may also be, for example, MAC (Medium Access Control) signaling; or a MAC control element (MAC CE). However, the present application is not limited thereto.

[0050] In the following description, to avoid confusion, the terms "PUCCH" and "physical uplink control channel" or "uplink control information" are interchangeable, and the terms "PUSCH" and "physical uplink data channel" or "uplink data" are also interchangeable. Furthermore, transmitting or receiving the PUSCH can be understood as transmitting or receiving uplink data carried by the PUSCH. Furthermore, the terms "transmit" and "send" are interchangeable.

[0051] Embodiments of the first aspect

[0052] An embodiment of the present application provides a reference signal configuration method, which is described from the perspective of a terminal device.

[0053] FIG2 is a schematic diagram of a reference signal configuration method according to an embodiment of the present application. As shown in FIG2 , the method includes:

[0054] 201. A terminal device receives configuration information from a network device; wherein the configuration information is used to configure the terminal device to perform three-port uplink transmission;

[0055] 202. The terminal device is configured with a 3-port sounding reference signal (SRS), and / or a phase tracking reference signal (PTRS) for 3-port uplink transmission, and / or a demodulation reference signal (DMRS) for 3-port uplink transmission.

[0056] It is worth noting that FIG2 above is merely a schematic illustration of an embodiment of the present application, and the present application is not limited thereto. For example, the execution order of the various operations may be appropriately adjusted, and other operations may be added or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above description, and are not limited to the description of FIG2 above.

[0057] The following first describes SRS enhancement.

[0058] In some embodiments, a 3-port sounding reference signal (SRS) uses bundled SRS resources.

[0059] For example, a 2-port SRS resource and a single-port SRS resource are bundled for use in a 3-port SRS. The bundled SRS resources may be located in the same OFDM symbol, or in different OFDM symbols. For another example, three single-port SRS resources may be bundled for use in a 3-port SRS. The present application is not limited thereto.

[0060] In some embodiments, the same beam, the same TCI state, or the same spatial relation is configured for the bundled SRS resources, and / or the same SRS power control parameter is configured for the bundled SRS resources.

[0061] For example, if 3-port SRS operation is performed through bundled SRS resources, the same beam can be configured for the bundled SRS resources, or the same TCI state can be configured for the bundled SRS resources, or the same spatial relationship can be configured for the bundled SRS resources.

[0062] For another example, for bundled SRS resources, the SRS power control parameters can be the same. The SRS power control parameters may include a path loss reference signal, an SRS closed-loop power control state, parameters P0 and α, etc. The present application is not limited thereto, and specific parameters can be referred to in related art.

[0063] In some embodiments, the bundled SRS resources are configured with the same frequency bandwidth, and / or the bundled SRS resources are configured with the same time domain behavior, and / or the bundled SRS resources are configured with the same frequency hopping pattern, and / or the bundled SRS resources are configured with the same group hopping or sequence hopping, and / or the bundled SRS resources are configured with the same partial frequency sounding pattern, and / or the bundled SRS resources are configured with the same repetition hopping pattern and number of OFDM symbols.

[0064] For example, the same frequency bandwidth may be allocated to the bundled SRS resources.

[0065] For another example, the bundled SRS resources may be configured with the same time-domain behavior; for example, aperiodic / periodic / semi-persistent.

[0066] For another example, the same frequency hopping pattern can be configured for the bundled SRS resources. In addition, the same packet hopping / sequence hopping can also be configured. In addition, if the partial frequency detection pattern is enabled, the same partial frequency detection pattern can be configured for the bundled SRS resources.

[0067] For another example, the bundled SRS resources may be configured with the same repetition pattern and the same number of OFDM symbols.

[0068] In some embodiments, SRS resources are on different OFDM symbols and are configured with the same comb offset and / or comb size.

[0069] In some embodiments, SRS resources are configured with different comb offsets and / or comb sizes on different OFDM symbols.

[0070] For example, for bundled SRS resources, if the SRS resources are in different OFDM symbols, the same comb offset (or different comb offsets) can be configured for these SRS resources. In addition, the same comb size (or different comb sizes) can be configured for these SRS resources.

[0071] In some embodiments, the SRS resources are on the same OFDM symbol and are configured with the same comb offset and / or comb size.

[0072] For example, for bundled SRS resources, if the SRS resources are in the same OFDM symbol, the same comb offset can be configured for these SRS resources. In addition, the same comb size can be configured for these SRS resources.

[0073] For another example, comb offset hopping may be applied to bundled SRS resources.

[0074] For another example, comb offset hopping may not be applied to bundled SRS resources.

[0075] For another example, cyclic shift hopping may be applied to bundled SRS resources.

[0076] For another example, cyclic shift hopping may not be applied to bundled SRS resources.

[0077] The above examples illustrate the configuration of bundled SRS resources, but the present application is not limited thereto. For example, one of the above examples may be used alone, or two or more examples may be combined with each other.

[0078] In some embodiments, the bundled SRS resources are on different OFDM symbols, a portion of the OFDM symbols of the bundled SRS resources are dropped, then all OFDM symbols used for 3-port SRS are dropped, or the remaining OFDM symbols used for 3-port SRS are sent.

[0079] For example, if 3-port SRS operation is performed through bundled SRS resources and the bundled SRS resources are on different OFDM symbols, if a portion of the OFDM symbols of the bundled SRS resources are dropped due to a conflict with other uplink channels / signals with higher priority, all OFDM symbols of the 3-port SRS are dropped.

[0080] For another example, if a 3-port SRS operation is performed through bundled SRS resources, and the bundled SRS resources are on different OFDM symbols, if a portion of the OFDM symbols of the bundled SRS resources are dropped due to a conflict with other uplink channels / signals with higher priority, only the OFDM symbols that conflict with other uplink transmissions with higher priority are dropped, and the remaining OFDM symbols are still sent.

[0081] In some embodiments, the 3-port SRS uses bundled 2-port SRS resources and single-port SRS resources, and the bundled SRS resources are on different OFDM symbols. All OFDM symbols of the 2-port SRS resources or all OFDM symbols of the single-port SRS resources are dropped, then all OFDM symbols used for the 3-port SRS are dropped.

[0082] For example, when a 3-port SRS operation is performed by bundling a 2-port SRS resource and a single-port SRS resource on different OFDM symbols, if all OFDM symbols of the 2-port SRS resource (or all OFDM symbols of the single-port SRS resource) are discarded due to a conflict with other uplink channels / signals having a higher priority, all OFDM symbols used for the 3-port SRS are discarded.

[0083] In some embodiments, the 3-port SRS uses bundled 2-port SRS resources and single-port SRS resources, and the bundled SRS resources are on different OFDM symbols. A portion of the OFDM symbols of the 2-port SRS resources or a portion of the OFDM symbols of the single-port SRS resources are dropped, and the remaining OFDM symbols used for the 3-port SRS are still sent.

[0084] For example, when a 3-port SRS operation is performed by bundling a 2-port SRS resource and a single-port SRS resource on different OFDM symbols, if a portion of the OFDM symbols of the 2-port SRS resource (or a portion of the OFDM symbols in the single-port SRS resource) is dropped due to a conflict with other uplink channels / signals with a higher priority, the remaining OFDM symbols of the 3-port SRS are still transmitted.

[0085] The above example illustrates 3-port SRS-related OFDM symbols. The term “drop” may be understood as “skip”, “not process”, “not send”, etc., and the present application is not limited thereto.

[0086] The above schematically illustrates SRS enhancement, and the following will further illustrate PTRS enhancement and / or DMRS enhancement.

[0087] In some embodiments, a non-coherent terminal device with 3Tx supports two PTRS ports, PUSCH port #1000 and PUSCH port #1002 are associated with PTRS port #0, and PUSCH port #1001 is associated with PTRS port #1.

[0088] For example, for a non-coherent UE with 3Tx, two PTRS ports are supported. The mapping between PTRS ports (PTRS port #0 and PTRS port #1) and PUSCH ports (PUSCH port #1000, PUSCH port #1001, PUSCH port #1002) can be as follows:

[0089] PUSCH port #1000 and PUSCH port #1002 are associated with PTRS port #0;

[0090] PUSCH port #1001 is associated with PTRS port #1.

[0091] In some embodiments, a non-coherent terminal device with 3Tx supports two PTRS ports, PUSCH port #1000 and PUSCH port #1001 are associated with PTRS port #0, and PUSCH port #1002 is associated with PTRS port #1.

[0092] For example, for a non-coherent UE with 3Tx, two PTRS ports are supported. The mapping between PTRS ports (PTRS port #0 and PTRS port #1) and PUSCH ports (PUSCH port #1000, PUSCH port #1001, PUSCH port #1002) can be as follows:

[0093] PUSCH port #1000 and PUSCH port #1001 are associated with PTRS port #0;

[0094] PUSCH port #1002 is associated with PTRS port #1.

[0095] In some embodiments, for a terminal device with 3Tx, the length of the PTRS-DMRS association field in DCI format 0_1 ​​and / or DCI format 0_2 is 2 bits.

[0096] For example, for a UE with 3Tx, in DCI format 0_1 / 0_2, the length of the "PTRS-DMRS association" field may be 2 bits, and the association may be as shown in Table 1, where MSB represents the most significant bit and LSB represents the least significant bit.

[0097] Table 1 PTRS-DMRS association for uplink PTRS ports 0 and 1

[0098] (PTRS-DMRS association for UL PTRS ports 0 and 1)

[0099] In some embodiments, for a terminal device with 3Tx, the length of the PTRS-DMRS association field in DCI format 0_1 ​​and / or DCI format 0_2 is 1 bit.

[0100] For example, for a UE with 3Tx, in DCI format 0_1 / 0_2, the length of the "PTRS-DMRS association" field can be 1 bit. If two PTRS ports are used according to the indicated TPMI (both PTRS port 0 and PTRS port 1 are used), and there is a PTRS port shared by two layers, Table 2 is used to indicate the PTRS-DMRS association of the PTRS port shared by the two layers. For the other PTRS port, since it is shared by only one layer, this indication is unnecessary.

[0101] Table 2 PTRS-DMRS association for uplink PTRS port 0 or port 1

[0102] (PTRS-DMRS association for UL PTRS port 0 or port 1)

[0103] For another example, for maxRank = 2, in DCI format 0_1 / 0_2, the length of the "PTRS-DMRS association" field can be 1 bit. If one PTRS port is used according to the indicated TPMI (PTRS port 0 or PTRS port 1 is used), which is shared by two layers, Table 2 is used to indicate the PTRS-DMRS association of the PTRS port. If two PTRS ports are used according to the indicated TPMI (PTRS port 0 and PTRS port 1 are used), PTRS port 0 is associated with the first DMRS port sharing PTRS port 0, and PTRS port 1 is associated with the first DMRS port sharing PTRS port 1, and this indication is unnecessary.

[0104] For maxRank=3, the length of the "PTRS-DMRS association" field in DCI format 0_1 / 0_2 can be 1 bit. If two PTRS ports are used according to the indicated TPMI (PTRS port 0 and PTRS port 1 are used), and one PTRS port is shared by two layers, Table 2 is used to indicate the PTRS-DMRS association of the PTRS ports shared by the two layers. For the other PTRS port, since it is shared by only one layer, this indication is unnecessary.

[0105] For maxRank=3, if one PTRS port is used according to the indicated TPMI (PTRS port 0 or PTRS port 1 is used), and the PTRS port is shared by two layers, Table 2 is used to indicate the PTRS-DMRS association of the PTRS port, PTRS port 0 is associated with the first DMRS port of the shared PTRS port 0, and PTRS port 1 is associated with the first DMRS port of the shared PTRS port 1, and this indication is unnecessary.

[0106] In some embodiments, for non-coherent UEs with 3Tx, a single PTRS port is supported.

[0107] In some embodiments, for a terminal device with 3Tx, the transform precoder in DCI format 0_1 ​​and / or DCI format 0_2 is disabled, then for dmrs-Type=1 and maxLength=1, the length of the antenna port field for DMRS is X1 bits, where X1 is less than 3.

[0108] For example, for a UE with 3Tx, in DCI format 0_1 / 0_2, if the transform precoder is disabled, the length of the "Antenna Port" field for DMRS can be X1 bits (for dmrs-Type=1 and maxLength=1), where X1 can be less than 3, for example, 2 bits.

[0109] In some embodiments, for a terminal device with 3Tx, the transform precoder in DCI format 0_1 ​​and / or DCI format 0_2 is disabled, then for dmrs-Type=1 and maxLength=2, the length of the antenna port field for DMRS is X2 bits, where X2 is less than 4.

[0110] For example, for a UE with 3Tx, in DCI format 0_1 / 0_2, if the transform precoder is disabled, the length of the "Antenna Port" field for DMRS can be X2 bits (for dmrs-Type=1 and maxLength=2), where X2 can be less than 4, for example, 2 bits or 3 bits.

[0111] In some embodiments, for a terminal device with 3Tx, the transform precoder in DCI format 0_1 ​​and / or DCI format 0_2 is disabled, then for dmrs-Type=2 and maxLength=1, the length of the antenna port field for DMRS is X3 bits, where X3 is less than 4.

[0112] For example, for a UE with 3Tx, in DCI format 0_1 / 0_2, if the transform precoder is disabled, the length of the "Antenna Port" field for DMRS can be X3 bits (for dmrs-Type=2 and maxLength=1), where X3 can be less than 4, for example, 2 bits or 3 bits.

[0113] In some embodiments, for a terminal device with 3Tx, the transform precoder in DCI format 0_1 ​​and / or DCI format 0_2 is disabled, then for dmrs-Type=2 and maxLength=2, the length of the antenna port field for DMRS is X4 bits, where X4 is less than 5.

[0114] For example, for a UE with 3Tx, in DCI format 0_1 / 0_2, if the transform precoder is disabled, the length of the "Antenna Port" field for DMRS can be X4 bits (for dmrs-Type = 2 and maxLength = 2), where X4 can be less than 5, for example, 2 bits, 3 bits, or 4 bits.

[0115] The above schematically illustrates PTRS / DMRS. For the specific content or meaning of the DCI format and each domain, each port, and parameters such as maxRank, dmrs-Type, and maxLength in the above embodiments, please refer to the relevant technology, and this application will not go into details here.

[0116] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0117] It can be seen from the above embodiments that the terminal device receives configuration information from the network device; wherein, the terminal device is configured with 3-port SRS and / or PTRS for 3-port uplink transmission and / or DMRS for 3-port uplink transmission; thereby, the reference signal for uplink transmission can be appropriately configured to improve the performance and efficiency of uplink transmission.

[0118] Embodiments of the second aspect

[0119] The embodiment of the present application provides a reference signal configuration method, which is described from the perspective of a network device. The embodiment of the second aspect can be combined with the embodiment of the first aspect, and the same contents as the embodiment of the first aspect will not be repeated.

[0120] FIG3 is another schematic diagram of a reference signal configuration method according to an embodiment of the present application. As shown in FIG3 , the method includes:

[0121] 301. A network device sends configuration information to a terminal device, wherein the configuration information is used to configure the terminal device to perform 3-port uplink transmission.

[0122] The terminal device is configured with a 3-port sounding reference signal (SRS), and / or a phase tracking reference signal (PTRS) for 3-port uplink transmission, and / or a demodulation reference signal (DMRS) for 3-port uplink transmission.

[0123] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0124] It can be seen from the above embodiments that the terminal device receives configuration information from the network device; wherein, the terminal device is configured with 3-port SRS and / or PTRS for 3-port uplink transmission and / or DMRS for 3-port uplink transmission; thereby, the reference signal for uplink transmission can be appropriately configured to improve the performance and efficiency of uplink transmission.

[0125] Embodiments of the third aspect

[0126] The embodiment of the present application provides a reference signal configuration device, which may be, for example, a terminal device, or one or more components or assemblies configured in the terminal device, and the contents identical to those in the first and second aspects of the embodiment will not be repeated.

[0127] FIG4 is a schematic diagram of a reference signal configuration apparatus according to an embodiment of the present application. As shown in FIG4 , the reference signal configuration apparatus 400 according to an embodiment of the present application includes:

[0128] A receiving unit 401 receives configuration information from a network device; wherein the configuration information is used to configure the terminal device to perform 3-port uplink transmission;

[0129] The processing unit 402 is configured with a 3-port sounding reference signal (SRS), and / or a phase tracking reference signal (PTRS) for 3-port uplink transmission, and / or a demodulation reference signal (DMRS) for 3-port uplink transmission.

[0130] In some embodiments, a 3-port sounding reference signal (SRS) uses bundled SRS resources.

[0131] In some embodiments, the same beam, the same TCI state, or the same spatial relation is configured for the bundled SRS resources, and / or the same SRS power control parameter is configured for the bundled SRS resources.

[0132] In some embodiments, the bundled SRS resources are configured with the same frequency bandwidth, and / or the bundled SRS resources are configured with the same time domain behavior, and / or the bundled SRS resources are configured with the same frequency hopping pattern, and / or the bundled SRS resources are configured with the same group hopping or sequence hopping, and / or the bundled SRS resources are configured with the same partial frequency sounding pattern, and / or the bundled SRS resources are configured with the same repetition hopping pattern and number of OFDM symbols.

[0133] In some embodiments, SRS resources are on different OFDM symbols and are configured with the same comb offset and / or comb size.

[0134] In some embodiments, SRS resources are configured with different comb offsets and / or comb sizes on different OFDM symbols.

[0135] In some embodiments, the SRS resources are on the same OFDM symbol and are configured with the same comb offset and / or comb size.

[0136] In some embodiments, the bundled SRS resources are on different OFDM symbols, a portion of the OFDM symbols of the bundled SRS resources are dropped, then all OFDM symbols used for 3-port SRS are dropped, or the remaining OFDM symbols used for 3-port SRS are sent.

[0137] In some embodiments, the 3-port SRS uses bundled 2-port SRS resources and single-port SRS resources, and the bundled SRS resources are on different OFDM symbols.

[0138] All OFDM symbols of the 2-port SRS resource or all OFDM symbols of the 1-port SRS resource are dropped, and all OFDM symbols for the 3-port SRS are dropped.

[0139] In some embodiments, the 3-port SRS uses bundled 2-port SRS resources and single-port SRS resources, and the bundled SRS resources are on different OFDM symbols.

[0140] A portion of the OFDM symbols of the 2-port SRS resource or a portion of the OFDM symbols of the 1-port SRS resource is dropped, and the remaining OFDM symbols for the 3-port SRS are still transmitted.

[0141] In some embodiments, a non-coherent terminal device with 3Tx supports two PTRS ports, PUSCH port #1000 and PUSCH port #1002 are associated with PTRS port #0, and PUSCH port #1001 is associated with PTRS port #1.

[0142] In some embodiments, a non-coherent terminal device with 3Tx supports two PTRS ports, PUSCH port #1000 and PUSCH port #1001 are associated with PTRS port #0, and PUSCH port #1002 is associated with PTRS port #1.

[0143] In some embodiments, for a terminal device with 3Tx, the length of the PTRS-DMRS association field in DCI format 0_1 ​​and / or DCI format 0_2 is 2 bits.

[0144] In some embodiments, for a terminal device with 3Tx, the length of the PTRS-DMRS association field in DCI format 0_1 ​​and / or DCI format 0_2 is 1 bit.

[0145] In some embodiments, for a terminal device with 3Tx, the transform precoder in DCI format 0_1 ​​and / or DCI format 0_2 is disabled, then for dmrs-Type=1 and maxLength=1, the length of the antenna port field for DMRS is X1 bits, where X1 is less than 3.

[0146] In some embodiments, for a terminal device with 3Tx, the transform precoder in DCI format 0_1 ​​and / or DCI format 0_2 is disabled, then for dmrs-Type=1 and maxLength=2, the length of the antenna port field for DMRS is X2 bits, where X2 is less than 4.

[0147] In some embodiments, for a terminal device with 3Tx, the transform precoder in DCI format 0_1 ​​and / or DCI format 0_2 is disabled, then for dmrs-Type=2 and maxLength=1, the length of the antenna port field for DMRS is X3 bits, where X3 is less than 4.

[0148] In some embodiments, for a terminal device with 3Tx, the transform precoder in DCI format 0_1 ​​and / or DCI format 0_2 is disabled, then for dmrs-Type=2 and maxLength=2, the length of the antenna port field for DMRS is X4 bits, where X4 is less than 5.

[0149] In some embodiments, as shown in FIG4 , the reference signal configuration apparatus 400 may further include:

[0150] The sending unit 403 uses 3 ports to send uplink transmission to the network device.

[0151] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0152] It is worth noting that the above description only describes the components or modules related to the present application, but the present application is not limited thereto. The reference signal configuration apparatus 400 may also include other components or modules. For details of these components or modules, please refer to the relevant art.

[0153] In addition, for the sake of simplicity, FIG4 only illustrates the connection relationship or signal direction between various components or modules. However, it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

[0154] It can be seen from the above embodiments that the terminal device receives configuration information from the network device; wherein, the terminal device is configured with 3-port SRS and / or PTRS for 3-port uplink transmission and / or DMRS for 3-port uplink transmission; thereby, the reference signal for uplink transmission can be appropriately configured to improve the performance and efficiency of uplink transmission.

[0155] Embodiments of the fourth aspect

[0156] The embodiment of the present application provides a reference signal configuration device, which may be, for example, a network device, or one or more components or assemblies configured in the network device, and the contents identical to those in the first to third aspects of the embodiment will not be repeated.

[0157] FIG5 is another schematic diagram of a reference signal configuration apparatus according to an embodiment of the present application. As shown in FIG5 , the reference signal configuration apparatus 500 includes:

[0158] A sending unit 501 sends configuration information to a terminal device; wherein the configuration information is used to configure the terminal device to perform 3-port uplink transmission;

[0159] The terminal device is configured with a 3-port sounding reference signal (SRS), and / or a phase tracking reference signal (PTRS) for 3-port uplink transmission, and / or a demodulation reference signal (DMRS) for 3-port uplink transmission.

[0160] In some embodiments, as shown in FIG5 , the reference signal configuration apparatus 500 may further include:

[0161] The receiving unit 502 receives the uplink transmission sent by the terminal device using port 3.

[0162] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0163] It is worth noting that the above description only describes the components or modules related to the present application, but the present application is not limited thereto. The reference signal configuration apparatus 500 may also include other components or modules, and for details of these components or modules, reference may be made to related technologies.

[0164] In addition, for simplicity, FIG5 only illustrates the connection relationship or signal path between various components or modules. However, those skilled in the art should be aware that various related technologies such as bus connection can be used. The above-mentioned components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; this application is not limited to this.

[0165] It can be seen from the above embodiments that the terminal device receives configuration information from the network device; wherein, the terminal device is configured with 3-port SRS and / or PTRS for 3-port uplink transmission and / or DMRS for 3-port uplink transmission; thereby, the reference signal for uplink transmission can be appropriately configured to improve the performance and efficiency of uplink transmission.

[0166] Embodiments of the fifth aspect

[0167] An embodiment of the present application also provides a communication system, and reference may be made to FIG1 . The contents that are the same as those in the first to fourth aspects of the embodiments will not be repeated.

[0168] In some embodiments, the communication system 100 may include at least:

[0169] A network device that sends configuration information to a terminal device; wherein the configuration information is used to configure the terminal device to perform 3-port uplink transmission;

[0170] A terminal device is configured with a 3-port sounding reference signal (SRS), and / or a phase tracking reference signal (PTRS) for 3-port uplink transmission, and / or a demodulation reference signal (DMRS) for 3-port uplink transmission.

[0171] The embodiment of the present application also provides a terminal device, but the present application is not limited thereto and may also be other devices.

[0172] Figure 6 is a schematic diagram of a terminal device according to an embodiment of the present application. As shown in Figure 6 , terminal device 600 may include a processor 610 and a memory 620. Memory 620 stores data and programs and is coupled to processor 610. It should be noted that this diagram is exemplary; other types of structures may be used to supplement or replace this structure to implement telecommunication or other functions.

[0173] For example, the processor 610 may be configured to execute a program to implement the reference signal configuration method as described in the embodiment of the first aspect. For example, the processor 610 may be configured to perform the following control: receiving configuration information from a network device; wherein the configuration information is used to configure a terminal device for 3-port uplink transmission; the terminal device is configured with a 3-port sounding reference signal (SRS), and / or a phase tracking reference signal (PTRS) for 3-port uplink transmission, and / or a demodulation reference signal (DMRS) for 3-port uplink transmission.

[0174] As shown in Figure 6 , the terminal device 600 may further include: a communication module 630, an input unit 640, a display 650, and a power supply 660. The functions of these components are similar to those in the prior art and are not described in detail here. It is worth noting that the terminal device 600 does not necessarily include all of the components shown in Figure 6 , and the aforementioned components are not essential. Furthermore, the terminal device 600 may also include components not shown in Figure 6 , for which reference may be made to the prior art.

[0175] An embodiment of the present application further provides a network device, which may be, for example, a base station, but the present application is not limited thereto and may also be other network devices.

[0176] Figure 7 is a schematic diagram illustrating the structure of a network device according to an embodiment of the present application. As shown in Figure 7, network device 700 may include a processor 710 (e.g., a central processing unit (CPU)) and a memory 720; memory 720 is coupled to processor 710. Memory 720 may store various data and may also store an information processing program 730, which is executed under the control of processor 710.

[0177] For example, the processor 710 may be configured to execute a program to implement the reference signal configuration method as described in the embodiment of the second aspect. For example, the processor 710 may be configured to perform the following control: sending configuration information to a terminal device; the configuration information is used to configure the terminal device to perform 3-port uplink transmission; wherein the terminal device is configured with a 3-port sounding reference signal (SRS), and / or a phase tracking reference signal (PTRS) for 3-port uplink transmission, and / or a demodulation reference signal (DMRS) for 3-port uplink transmission.

[0178] In addition, as shown in Figure 7, network device 700 may further include: a transceiver 740 and an antenna 750; wherein, the functions of the above components are similar to those in the prior art and are not described here in detail. It is worth noting that network device 700 does not necessarily include all the components shown in Figure 7; in addition, network device 700 may also include components not shown in Figure 7, and reference may be made to the prior art for details.

[0179] An embodiment of the present application also provides a computer program, wherein when the program is executed in a terminal device, the program enables the terminal device to execute the reference signal configuration method described in the embodiment of the first aspect.

[0180] An embodiment of the present application also provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the reference signal configuration method described in the embodiment of the first aspect.

[0181] An embodiment of the present application further provides a computer program, wherein when the program is executed in a network device, the program causes the network device to execute the reference signal configuration method described in the embodiment of the second aspect.

[0182] An embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program enables a network device to execute the reference signal configuration method described in the embodiment of the second aspect.

[0183] The above devices and methods of the present application can be implemented by hardware or by a combination of hardware and software. The present application relates to such a computer-readable program that, when executed by a logic component, enables the logic component to implement the devices or components described above, or enables the logic component to implement the various methods or steps described above. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0184] The method / device described in conjunction with the embodiments of the present application can be directly embodied as hardware, a software module executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams shown in the figure and / or one or more combinations of functional block diagrams can correspond to various software modules of the computer program flow or to various hardware modules. These software modules can respectively correspond to the various steps shown in the figure. These hardware modules can be implemented by solidifying these software modules, for example, using a field programmable gate array (FPGA).

[0185] The software module may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. A storage medium may be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be an integral part of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) uses a large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large-capacity flash memory device.

[0186] One or more of the functional blocks and / or one or more combinations of functional blocks described in the accompanying drawings may be implemented as a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any appropriate combination thereof for performing the functions described in this application. One or more of the functional blocks and / or one or more combinations of functional blocks described in the accompanying drawings may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

[0187] The present application has been described above in conjunction with specific embodiments. However, those skilled in the art should understand that these descriptions are merely illustrative and are not intended to limit the scope of protection of the present application. Those skilled in the art may make various modifications and variations to the present application based on the spirit and principles of the present application, and such modifications and variations are also within the scope of the present application.

[0188] Regarding the implementation methods including the above embodiments, the following additional notes are also disclosed:

[0189] 1. A reference signal configuration method, comprising:

[0190] The terminal device receives configuration information from the network device; wherein the configuration information is used to configure the terminal device to perform 3-port uplink transmission;

[0191] The terminal device is configured with a 3-port sounding reference signal (SRS), and / or a phase tracking reference signal (PTRS) for 3-port uplink transmission, and / or a demodulation reference signal (DMRS) for 3-port uplink transmission.

[0192] 2. A reference signal configuration method, comprising:

[0193] The network device sends configuration information to the terminal device; wherein the configuration information is used to configure the terminal device to perform 3-port uplink transmission;

[0194] The terminal device is configured with a 3-port sounding reference signal (SRS), and / or a phase tracking reference signal (PTRS) for 3-port uplink transmission, and / or a demodulation reference signal (DMRS) for 3-port uplink transmission.

[0195] 3. A terminal device comprises a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the reference signal configuration method as described in Note 1.

[0196] 4. A network device comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the reference signal configuration method as described in Note 2.

[0197] 5. A computer program product, comprising at least a computer program, wherein when the computer program is executed by a processor, the terminal device executes the reference signal configuration method as described in Note 1.

[0198] 6. A computer program product, comprising at least a computer program, wherein when the computer program is executed by a processor, the network device executes the reference signal configuration method as described in Note 2.

Claims

1. A reference signal configuration device, comprising: A receiving unit, which receives configuration information from a network device; wherein the configuration information is used to configure the terminal device to perform 3-port uplink transmission; A processing unit is configured with a 3-port sounding reference signal, and / or a phase tracking reference signal for 3-port uplink transmission, and / or a demodulation reference signal for 3-port uplink transmission.

2. The device according to claim 1, wherein The 3-port sounding reference signal uses bundled SRS resources.

3. The device according to claim 2, wherein The same beam, the same TCI state, or the same spatial relationship is configured for the bundled SRS resources, and / or the same SRS power control parameter is configured for the bundled SRS resources.

4. The device according to claim 2, wherein The bundled SRS resources are configured with the same frequency bandwidth, and / or the bundled SRS resources are configured with the same time domain behavior, and / or the bundled SRS resources are configured with the same frequency hopping pattern, and / or the bundled SRS resources are configured with the same group hopping or sequence hopping, and / or the bundled SRS resources are configured with the same partial frequency detection pattern, and / or the bundled SRS resources are configured with the same repetition pattern and number of OFDM symbols.

5. The device according to claim 2, wherein If the SRS resources are on different OFDM symbols, the same comb offset and / or comb size are configured.

6. The device according to claim 2, wherein If the SRS resources are on different OFDM symbols, different comb offsets and / or comb sizes are configured.

7. The device according to claim 2, wherein If the SRS resources are on the same OFDM symbol, the same comb offset and / or comb size are configured.

8. The device according to claim 2, wherein The bundled SRS resources are on different OFDM symbols, a portion of the OFDM symbols of the bundled SRS resources are discarded, and then all OFDM symbols for the 3-port SRS are discarded, or the remaining OFDM symbols for the 3-port SRS are transmitted.

9. The device according to claim 2, wherein The 3-port SRS uses a bundled 2-port SRS resource and a single-port SRS resource, and the bundled SRS resources are on different OFDM symbols. All OFDM symbols of the 2-port SRS resource or all OFDM symbols of the single-port SRS resource are discarded, and all OFDM symbols used for the 3-port SRS are discarded.

10. The device according to claim 2, wherein The 3-port SRS uses a bundled 2-port SRS resource and a single-port SRS resource, and the bundled SRS resources are on different OFDM symbols. A portion of the OFDM symbols of the 2-port SRS resource or a portion of the OFDM symbols of the 1-port SRS resource is discarded, and the remaining OFDM symbols for the 3-port SRS are still transmitted.

11. The device according to claim 1, wherein A non-coherent terminal device with 3Tx supports two PTRS ports, PUSCH port #1000 and PUSCH port #1002 are associated with PTRS port #0, and PUSCH port #1001 is associated with PTRS port #1.

12. The device according to claim 1, wherein A non-coherent terminal device with 3Tx supports two PTRS ports, PUSCH port #1000 and PUSCH port #1001 are associated with PTRS port #0, and PUSCH port #1002 is associated with PTRS port #1.

13. The device according to claim 1, wherein For a terminal device with 3Tx, the length of the PTRS-DMRS association field in DCI format 0_1 ​​and / or DCI format 0_2 is 2 bits.

14. The device according to claim 1, wherein For a terminal device with 3Tx, the length of the PTRS-DMRS association field in DCI format 0_1 ​​and / or DCI format 0_2 is 1 bit.

15. The device according to claim 1, wherein For a terminal device with 3Tx, the transform precoder in DCI format 0_1 ​​and / or DCI format 0_2 is disabled, then for dmrs-Type=1 and maxLength=1, the length of the antenna port field for DMRS is X1 bits, where X1 is less than 3.

16. The device according to claim 1, wherein For a terminal device with 3Tx, the transform precoder in DCI format 0_1 ​​and / or DCI format 0_2 is disabled, then for dmrs-Type=1 and maxLength=2, the length of the antenna port field for DMRS is X2 bits, where X2 is less than 4.

17. The device according to claim 1, wherein For a terminal device with 3Tx, the transform precoder in DCI format 0_1 ​​and / or DCI format 0_2 is disabled, then for dmrs-Type=2 and maxLength=1, the length of the antenna port field for DMRS is X3 bits, where X3 is less than 4.

18. The device according to claim 1, wherein For a terminal device with 3Tx, the transform precoder in DCI format 0_1 ​​and / or DCI format 0_2 is disabled, then for dmrs-Type=2 and maxLength=2, the length of the antenna port field for DMRS is X4 bits, where X4 is less than 5.

19. A reference signal configuration device, comprising: A sending unit, which sends configuration information to a terminal device; wherein the configuration information is used to configure the terminal device to perform 3-port uplink transmission; The terminal device is configured with a 3-port sounding reference signal and / or a corresponding signal for 3-port uplink transmission. Bit tracking reference signal, and / or demodulation reference signal for 3-port uplink transmission.

20. A communication system comprising: A network device that sends configuration information to a terminal device; wherein the configuration information is used to configure the terminal device to perform 3-port uplink transmission; A terminal device is configured with a 3-port sounding reference signal, and / or a phase tracking reference signal for 3-port uplink transmission, and / or a demodulation reference signal for 3-port uplink transmission.

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