Communication method and communication device

Abstract

The invention discloses a communication method and a communication device. The method comprises the following steps: determining a first geographic position of first communication equipment; sending first configuration information according to the first geographic position, wherein the first configuration information indicates a first frequency domain resource of the uplink reference signal and / or a first generation parameter of a sequence of the uplink reference signal; and receiving a first uplink reference signal, wherein the first uplink reference signal is determined by the first communication device according to the first configuration information. According to the method and the device provided by the embodiment of the invention, the situation that the uplink reference signal sent by the UE is interfered by the uplink reference signals sent by other UEs at different geographic positions, so that the channel estimation quality is poor is avoided.

Description

Technical Field

[0001] This application relates to the field of communications, and more specifically, to a communication method and a communication device. Background Technology

[0002] The sounding reference signal (SRS) is a crucial reference signal for obtaining channel state information, especially in time division duplex (TDD) systems. Leveraging the reciprocity of uplink and downlink channels, uplink and downlink channel information can be obtained through the SRS. In practical systems, considering the overhead of the reference signal and the performance of channel estimation, the number of available orthogonal SRS resources is often limited. However, networks contain numerous cells, and terminal devices in each cell transmit SRS for channel measurements. This leads to the reuse of limited orthogonal SRS resources across multiple cells. For example, under one SRS resource allocation strategy, terminal devices within each cell may be allocated orthogonal SRS resources, while different cells may be allocated non-orthogonal SRS resources, resulting in inter-cell SRS interference. Currently, SRS interference is one of the key factors limiting system performance.

[0003] Although enabling SRS cyclic shift (CS) hopping or comb offset (CO) hopping on the user equipment (UE) can effectively alleviate the aforementioned SRS interference problem, the UE performs CS hopping or CO hopping randomly, and the aforementioned SRS interference still exists. Summary of the Invention

[0004] This application provides a communication method and a communication device. Based on the geographical location information of the UE, the frequency domain resources and / or sequence generation parameters for transmitting uplink reference signals are configured. This can prevent the uplink reference signals transmitted by the UE from being interfered with by the uplink reference signals transmitted by other UEs, thus avoiding poor channel estimation quality.

[0005] Firstly, a communication method is provided. This method can be executed by a network device, or by a communication module configured in the network device, or by a circuit, chip, or chip system (such as a modem chip, also known as a baseband chip, or a system-on-chip (SoC) chip containing a modem core, a processor, or a system-in-package (SIP) chip) responsible for communication functions in the network device. Alternatively, it can be executed by a logic module or software capable of implementing all or part of the network device's functions. The method can also be executed by the network device, or by a component (e.g., a chip, circuit, or chip system) configured in the network device. This application does not limit the scope of this method. Here, the application of this method to a network device is taken as an example.

[0006] The method includes: determining a first geographical location of a first communication device; sending first configuration information based on the first geographical location, the first configuration information indicating a first frequency domain resource of an uplink reference signal and / or first generation parameters of a sequence of uplink reference signals; and receiving a first uplink reference signal, the first uplink reference signal being determined by the first communication device based on the first configuration information.

[0007] Based on the solution provided in the embodiments of this application, by configuring the first configuration information of the first frequency domain resources indicating the uplink reference signal and / or the first generation parameters of the uplink reference signal sequence for the first communication device according to the first geographical location by the network device, it is helpful to avoid the uplink reference signal sent by the UE being interfered with by the uplink reference signal sent by other UEs in different geographical locations, resulting in poor channel estimation quality.

[0008] For example, in some possible implementations, the uplink reference signal is the SRS.

[0009] Optionally, in some possible implementations, the uplink reference signal can also be a reference signal transmitted by other terminals uplink, and this application does not limit this.

[0010] In some possible implementations, the first generation parameter indicates the first sequence offset.

[0011] Optionally, in some possible implementations, the first generation parameter includes a first sequence offset of the uplink reference signal.

[0012] Based on the solution provided in the embodiments of this application, the network device configures a first sequence offset for the first communication device according to the first geographical location, which helps to avoid the uplink reference signal sent by the UE having the same sequence offset as the uplink reference signal sent by other UEs, causing interference and resulting in poor channel estimation quality.

[0013] In some possible implementations, the first geographic location is located in a first region, and first configuration information is sent based on the first geographic location, including: sending the first configuration information based on the first region, the first configuration information indicating a set of first frequency domain resources, and / or a set of first sequence offsets.

[0014] Based on the solution provided in this application, by configuring the set of frequency domain resources and / or the set of sequence generation parameters used for transmitting uplink reference signals by the network device according to the region where the UE is located, the frequency domain resources and / or sequence generation parameters used for transmitting uplink reference signals by UEs in different regions can be different. This helps to avoid the situation where the frequency domain resources and / or sequence offsets used for uplink reference signals transmitted by different UEs in different regions are the same, causing mutual interference between uplink reference signals transmitted by different UEs and resulting in poor channel estimation quality.

[0015] In some possible implementations, the first uplink reference signal is determined by the first communication device based on the first configuration information, including: the first uplink reference signal is determined based on the first frequency domain resources, and the first frequency domain resources are determined based on a set of first frequency domain resources; or, the first uplink reference signal is determined based on the first frequency domain resources, and the first frequency domain resources are determined based on a set of first sequence offsets.

[0016] In some possible implementations, before sending the first configuration information, the method further includes: determining the second geographical location of the second communication device; and sending the first configuration information when the first geographical location and the second geographical location satisfy any of the following: the distance between the first geographical location and the second geographical location is less than or equal to a first threshold; or the distance between the center of the first region and the center of the second region is less than or equal to a second threshold, wherein the first geographical location is located in the first region and the second geographical location is located in the second region.

[0017] Based on the solution provided in the embodiments of this application, by configuring the frequency domain resources and / or sequence generation parameters used for transmitting uplink reference signals according to the distance between different UEs' geographical locations being less than or equal to a first threshold, or according to the distance between the center of the area where different UEs' geographical locations are located being less than or equal to a second threshold, the network device can avoid mutual interference between uplink reference signals transmitted by UEs that are close to each other, which would lead to poor channel estimation quality.

[0018] In some possible implementations, the first threshold is configured, pre-configured, or indicated by an instruction message; and / or, the second threshold is pre-configured or indicated by an instruction message.

[0019] In some possible implementations, the method further includes: receiving a second uplink reference signal, the second uplink reference signal being determined by a second communication device according to second configuration information, the second configuration information indicating a second frequency domain resource of the uplink reference signal and / or a second generation parameter of the sequence of the uplink reference signal; transmitting third configuration information in at least one of the following cases: the first frequency domain resource is the same as the second frequency domain resource, or the first generation parameter is the same as the second generation parameter, wherein the third configuration information indicates a third frequency domain resource of the uplink reference signal and / or a third generation parameter of the sequence of the uplink reference signal; and receiving a third uplink reference signal, the third uplink reference signal being determined by a first communication device according to the third configuration information.

[0020] Based on the solution provided in the embodiments of this application, by reconfiguring the frequency domain resources and / or sequence generation parameters used by a UE to transmit uplink reference signals that are interfered with by uplink reference signals transmitted by other UEs, it is possible to avoid the uplink reference signals transmitted by the UE being continuously interfered with by uplink reference signals transmitted by other UEs.

[0021] In some possible implementations, the third generation parameter indicates the third sequence offset.

[0022] Optionally, in some possible implementations, the third generation parameter includes the third sequence offset of the uplink reference signal.

[0023] In some possible implementations, the first frequency domain resources are different from the third frequency domain resources, and / or the first generation parameters are different from the third generation parameters.

[0024] Based on the solution provided in the embodiments of this application, by reconfiguring the generation parameters of frequency domain resources and / or sequences that are different from those of the UE that have been interfered with by uplink reference signals sent by other UEs, it is possible to further avoid the uplink reference signals sent by the UE being continuously interfered with by uplink reference signals sent by other UEs.

[0025] In some possible implementations, the first communication device and the second communication device belong to different cells.

[0026] Based on the solution provided in the embodiments of this application, by configuring different frequency domain resources and / or sequence generation parameters for different UEs in different cells to transmit uplink reference signals, it is possible to avoid the uplink reference signals transmitted by the UE being interfered with by the uplink reference signals transmitted by other UEs in neighboring cells, which would lead to poor channel estimation quality.

[0027] Secondly, a communication method is provided. This method can be executed by a terminal device, or by a communication module configured in the terminal device, or by a circuit, chip, or chip system responsible for communication functions in the terminal device (such as a modem chip, also known as a baseband chip, or a system-on-chip (SoC) chip containing a modem core, a processor, or a system-in-package (SIP) chip), or by a logic module or software capable of implementing all or part of the terminal device's functions. This method can also be executed by a network device, or by a component (e.g., a chip, circuit, or chip system) configured in the network device. This application does not limit the scope of this method. Here, the application of this method to a terminal device is taken as an example.

[0028] The method includes: sending a first geographical location of a first communication device; receiving first configuration information, the first configuration information being determined based on the first geographical location, the first configuration information indicating a first frequency domain resource of an uplink reference signal and / or first generation parameters of a sequence of uplink reference signals; and sending a first uplink reference signal, the first uplink reference signal being determined by the first communication device based on the first configuration information.

[0029] For example, the first uplink reference signal resource is used by the first communication device to transmit the first uplink reference signal.

[0030] For example, in some possible implementations, the uplink reference signal is the SRS.

[0031] Optionally, in some possible implementations, the uplink reference signal can also be a reference signal transmitted by other terminals uplink, and this application does not limit this.

[0032] In some possible implementations, the first generation parameter indicates the first sequence offset.

[0033] Optionally, in some possible implementations, the first generation parameter includes a first sequence offset of the uplink reference signal.

[0034] In some possible implementations, the first geographic location is located in a first region, and receiving first configuration information includes: receiving first configuration information sent according to the first region, the first configuration information indicating a set of first frequency domain resources, and / or a set of first sequence offsets.

[0035] In some possible implementations, the first uplink reference signal is determined by the first communication device based on the first configuration information, including: the first uplink reference signal is determined based on the first frequency domain resources, and the first frequency domain resources are determined based on a set of first frequency domain resources; or, the first uplink reference signal is determined based on the first frequency domain resources, and the first frequency domain resources are determined based on a set of first sequence offsets.

[0036] In some possible implementations, first configuration information is received when the first geographical location and the second geographical location of the second device satisfy any of the following: the distance between the first geographical location and the second geographical location is less than or equal to a first threshold; or the distance between the center of the first region and the center of the second region is less than or equal to a second threshold, wherein the first geographical location is located in the first region and the second geographical location is located in the second region.

[0037] In some possible implementations, the first communication device and the second communication device belong to different cells; the first frequency domain resources and the second frequency domain resources are different, or the first generation parameters and the second generation parameters are different; the second frequency domain resources and / or the second frequency domain parameters are used by the second communication device to transmit the second uplink reference signal.

[0038] In some possible implementations, the first threshold is configured, pre-configured, or indicated by an instruction message; and / or, the second threshold is configured, pre-configured, or indicated by an instruction message.

[0039] In some possible implementations, the third configuration information is received in at least one of the following situations: the first frequency domain resource is the same as the second frequency domain resource, or the first generation parameter is the same as the second generation parameter, wherein the third configuration information indicates the third frequency domain resource of the uplink reference signal and / or the third generation parameter of the sequence of the uplink reference signal; the method further includes: transmitting a third uplink reference signal, the third uplink reference signal being determined by the first communication device according to the third configuration information.

[0040] In some possible implementations, the third generation parameter indicates the third sequence offset.

[0041] Optionally, in some possible implementations, the third generation parameter includes the third sequence offset of the uplink reference signal.

[0042] In some possible implementations, the first frequency domain resources are different from the third frequency domain resources, and / or the first generation parameters are different from the third generation parameters.

[0043] In some possible implementations, the first communication device and the second communication device belong to different cells.

[0044] Thirdly, a communication device is provided, which may be a network device, or a chip, circuit or chip system configured in a network device, and the embodiments of this application do not limit this.

[0045] The device includes: a processing unit for determining a first geographical location of a first communication device; a transceiver unit for transmitting first configuration information based on the first geographical location, the first configuration information indicating first frequency domain resources of an uplink reference signal and / or first generation parameters of the sequence of the uplink reference signal; the transceiver unit is further configured to receive a first uplink reference signal, the first uplink reference signal being determined by the first communication device based on the first configuration information.

[0046] For example, in some possible implementations, the uplink reference signal is the SRS.

[0047] Optionally, in some possible implementations, the uplink reference signal can also be a reference signal transmitted by other terminals uplink, and this application does not limit this.

[0048] In some possible implementations, the first generation parameter indicates the first sequence offset.

[0049] Optionally, in some possible implementations, the first generation parameter includes a first sequence offset of the uplink reference signal.

[0050] In some possible implementations, the first geographical location is located in a first region, and the transceiver unit is specifically used to: send first configuration information according to the first region, the first configuration information indicating a set of first frequency domain resources, and / or a set of first sequence offsets.

[0051] In some possible implementations, the first uplink reference signal is determined by the first communication device based on the first configuration information, including: the first uplink reference signal is determined based on the first frequency domain resources, and the first frequency domain resources are determined based on a set of first frequency domain resources; or, the first uplink reference signal is determined based on the first frequency domain resources, and the first frequency domain resources are determined based on a set of first sequence offsets.

[0052] In some possible implementations, before sending the first configuration information, the processing unit is further configured to: determine the second geographical location of the second communication device; when the first geographical location and the second geographical location satisfy any one of the following, the transceiver unit is configured to send the first configuration information: the distance between the first geographical location and the second geographical location is less than or equal to a first threshold; or, the distance between the center of the first region and the center of the second region is less than or equal to a second threshold, wherein the first geographical location is located in the first region and the second geographical location is located in the second region.

[0053] In some possible implementations, the first communication device and the second communication device belong to different cells; the first frequency domain resources and the second frequency domain resources are different, or the first generation parameters and the second generation parameters are different; the second frequency domain resources and / or the second frequency domain parameters are used by the second communication device to transmit the second uplink reference signal.

[0054] In some possible implementations, the first threshold is configured, pre-configured, or indicated by an instruction message; and / or, the second threshold is configured, pre-configured, or indicated by an instruction message.

[0055] In some possible implementations, the transceiver unit is further configured to: receive a second uplink reference signal, the second uplink reference signal being determined by a second communication device according to second configuration information, the second configuration information indicating a second frequency domain resource of the uplink reference signal and / or a second generation parameter of the sequence of the uplink reference signal; and, in at least one of the following cases, the transceiver unit is further configured to transmit third configuration information: the first frequency domain resource is the same as the second frequency domain resource, or the first generation parameter is the same as the second generation parameter, wherein the third configuration information indicates a third frequency domain resource of the uplink reference signal and / or a third generation parameter of the sequence of the uplink reference signal; and receive a third uplink reference signal, the third uplink reference signal being determined by a first communication device according to the third configuration information.

[0056] In some possible implementations, the third generation parameter indicates the third sequence offset.

[0057] Optionally, in some possible implementations, the third generation parameter includes the third sequence offset of the uplink reference signal.

[0058] In some possible implementations, the first frequency domain resources are different from the third frequency domain resources, and / or the first generation parameters are different from the third generation parameters.

[0059] In some possible implementations, the first communication device and the second communication device belong to different cells.

[0060] Fourthly, a communication device is provided. This device can be a terminal device, a communication module in the terminal, or a chip, circuit, or chip system configured in the terminal device to perform communication functions. The embodiments of this application do not limit this.

[0061] The device includes: a transceiver unit for transmitting a first geographical location of a first communication device; the transceiver unit is further configured to receive first configuration information, the first configuration information being determined based on the first geographical location, the first configuration information indicating first frequency domain resources of an uplink reference signal and / or first generation parameters of the sequence of the uplink reference signal; the transceiver unit is further configured to transmit a first uplink reference signal, the first uplink reference signal being determined by the first communication device based on the first configuration information.

[0062] For example, in some possible implementations, the uplink reference signal is the SRS.

[0063] Optionally, in some possible implementations, the uplink reference signal can also be a reference signal transmitted by other terminals uplink, and this application does not limit this.

[0064] In some possible implementations, the first generation parameter indicates the first sequence offset.

[0065] Optionally, in some possible implementations, the first generation parameter includes a first sequence offset of the uplink reference signal.

[0066] In some possible implementations, the first geographical location is located in a first region, and the transceiver unit is specifically used to: receive first configuration information sent according to the first region, the first configuration information indicating a set of first frequency domain resources, and / or a set of first sequence offsets.

[0067] In some possible implementations, the first uplink reference signal is determined by the first communication device based on the first configuration information, including: the first uplink reference signal is determined based on the first frequency domain resources, and the first frequency domain resources are determined based on a set of first frequency domain resources; or, the first uplink reference signal is determined based on the first frequency domain resources, and the first frequency domain resources are determined based on a set of first sequence offsets.

[0068] In some possible implementations, the transceiver unit is further configured to receive first configuration information when the first geographical location and the second geographical location satisfy any of the following: the distance between the first geographical location and the second geographical location is less than or equal to a first threshold; or the distance between the center of the first region and the center of the second region is less than or equal to a second threshold, wherein the first geographical location is located in the first region and the second geographical location is located in the second region.

[0069] In some possible implementations, the first communication device and the second communication device belong to different cells; the first frequency domain resources and the second frequency domain resources are different, or the first generation parameters and the second generation parameters are different; the second frequency domain resources and / or the second frequency domain parameters are used by the second communication device to transmit the second uplink reference signal.

[0070] In some possible implementations, the first threshold is configured, pre-configured, or indicated by an instruction message; and / or, the second threshold is configured, pre-configured, or indicated by an instruction message.

[0071] In some possible implementations, the transceiver unit is further configured to receive third configuration information in at least one of the following cases: the first frequency domain resource is the same as the second frequency domain resource, or the first generation parameter is the same as the second generation parameter, wherein the third configuration information indicates the third frequency domain resource of the uplink reference signal and / or the third generation parameter of the sequence of the uplink reference signal; the transceiver unit is further configured to receive a third uplink reference signal, which is determined by the first communication device according to the third configuration information.

[0072] In some possible implementations, the third generation parameter indicates the third sequence offset.

[0073] Optionally, in some possible implementations, the third generation parameter includes the third sequence offset of the uplink reference signal.

[0074] In some possible implementations, the first frequency domain resources are different from the third frequency domain resources, and / or the first generation parameters are different from the third generation parameters.

[0075] In some possible implementations, the first communication device and the second communication device belong to different cells.

[0076] Fifthly, a communication device is provided, which may be a network device, or a chip, circuit or chip system configured in a network device, and the embodiments of this application do not limit this.

[0077] The device includes: a processor for determining a first geographical location of a first communication device; a transceiver for transmitting first configuration information based on the first geographical location, the first configuration information indicating first frequency domain resources of an uplink reference signal and / or first generation parameters of a sequence of uplink reference signals; the transceiver is also configured to receive a first uplink reference signal, the first uplink reference signal being determined by the first communication device based on the first configuration information.

[0078] For example, in some possible implementations, the uplink reference signal is the SRS.

[0079] Optionally, in some possible implementations, the uplink reference signal can also be a reference signal transmitted by other terminals uplink, and this application does not limit this.

[0080] In some possible implementations, the first generation parameter indicates the first sequence offset.

[0081] Optionally, in some possible implementations, the first generation parameter includes a first sequence offset of the uplink reference signal.

[0082] In some possible implementations, the first geographical location is located in a first region, and the transceiver is specifically used to: send first configuration information according to the first region, the first configuration information indicating a set of first frequency domain resources, and / or a set of first sequence offsets.

[0083] In some possible implementations, the first uplink reference signal is determined by the first communication device based on the first configuration information, including: the first uplink reference signal is determined based on the first frequency domain resources, and the first frequency domain resources are determined based on a set of first frequency domain resources; or, the first uplink reference signal is determined based on the first frequency domain resources, and the first frequency domain resources are determined based on a set of first sequence offsets.

[0084] In some possible implementations, before sending the first configuration information, the processor is further configured to: determine the second geographical location of the second communication device; when the first geographical location and the second geographical location satisfy any of the following, the transceiver is configured to send the first configuration information: the distance between the first geographical location and the second geographical location is less than or equal to a first threshold; or, the distance between the center of the first region and the center of the second region is less than or equal to a second threshold, wherein the first geographical location is located in the first region and the second geographical location is located in the second region.

[0085] In some possible implementations, the first communication device and the second communication device belong to different cells; the first frequency domain resources and the second frequency domain resources are different, or the first generation parameters and the second generation parameters are different; the second frequency domain resources and / or the second frequency domain parameters are used by the second communication device to transmit the second uplink reference signal.

[0086] In some possible implementations, the first threshold is configured, pre-configured, or indicated by an instruction message; and / or, the second threshold is configured, pre-configured, or indicated by an instruction message.

[0087] In some possible implementations, the transceiver is further configured to: receive a second uplink reference signal, the second uplink reference signal being determined by a second communication device according to second configuration information, the second configuration information indicating a second frequency domain resource of the uplink reference signal and / or a second generation parameter of the sequence of the uplink reference signal; and, in at least one of the following cases, the transceiver is further configured to transmit third configuration information: the first frequency domain resource is the same as the second frequency domain resource, or the first generation parameter is the same as the second generation parameter, wherein the third configuration information indicates a third frequency domain resource of the uplink reference signal and / or a third generation parameter of the sequence of the uplink reference signal; and receive a third uplink reference signal, the third uplink reference signal being determined by a first communication device according to the third configuration information.

[0088] In some possible implementations, the third generation parameter indicates the third sequence offset.

[0089] Optionally, in some possible implementations, the third generation parameter includes the third sequence offset of the uplink reference signal.

[0090] In some possible implementations, the first frequency domain resources are different from the third frequency domain resources, and / or the first generation parameters are different from the third generation parameters.

[0091] In some possible implementations, the first communication device and the second communication device belong to different cells.

[0092] In a sixth aspect, a communication device is provided. This device can be a terminal device, a communication module in the terminal, or a chip, circuit, or chip system configured in the terminal device to perform communication functions. The embodiments of this application do not limit this.

[0093] The device includes: a transceiver for transmitting a first geographical location of a first communication device; the transceiver is further configured to receive first configuration information, the first configuration information being determined based on the first geographical location, the first configuration information indicating first frequency domain resources of an uplink reference signal and / or first generation parameters of a sequence of uplink reference signals; the transceiver is further configured to transmit a first uplink reference signal, the first uplink reference signal being determined by the first communication device based on the first configuration information.

[0094] For example, in some possible implementations, the uplink reference signal is the SRS.

[0095] Optionally, in some possible implementations, the uplink reference signal can also be a reference signal transmitted by other terminals uplink, and this application does not limit this.

[0096] In some possible implementations, the first generation parameter indicates the first sequence offset.

[0097] Optionally, in some possible implementations, the first generation parameter includes a first sequence offset of the uplink reference signal.

[0098] In some possible implementations, the first geographic location is located in a first region, and the transceiver is specifically configured to: receive first configuration information transmitted according to the first region, the first configuration information indicating a set of first frequency domain resources, and / or a set of first sequence offsets.

[0099] In some possible implementations, the first uplink reference signal is determined by the first communication device based on the first configuration information, including: the first uplink reference signal is determined based on the first frequency domain resources, and the first frequency domain resources are determined based on a set of first frequency domain resources; or, the first uplink reference signal is determined based on the first frequency domain resources, and the first frequency domain resources are determined based on a set of first sequence offsets.

[0100] In some possible implementations, the transceiver is also used to receive first configuration information when the first geographic location and the second geographic location satisfy any of the following: the distance between the first geographic location and the second geographic location is less than or equal to a first threshold; or the distance between the center of the first region and the center of the second region is less than or equal to a second threshold, wherein the first geographic location is located in the first region and the second geographic location is located in the second region.

[0101] In some possible implementations, the first communication device and the second communication device belong to different cells; the first frequency domain resources and the second frequency domain resources are different, or the first generation parameters and the second generation parameters are different; the second frequency domain resources and / or the second frequency domain parameters are used by the second communication device to transmit the second uplink reference signal.

[0102] In some possible implementations, the first threshold is configured, pre-configured, or indicated by an instruction message; and / or, the second threshold is configured, pre-configured, or indicated by an instruction message.

[0103] In some possible implementations, the transceiver is further configured to receive third configuration information in at least one of the following cases: the first frequency domain resource is the same as the second frequency domain resource, or the first generation parameter is the same as the second generation parameter, wherein the third configuration information indicates the third frequency domain resource of the uplink reference signal and / or the third generation parameter of the sequence of the uplink reference signal; the transceiver is further configured to receive a third uplink reference signal, which is determined by the first communication device based on the third configuration information.

[0104] In some possible implementations, the third generation parameter indicates the third sequence offset.

[0105] Optionally, in some possible implementations, the third generation parameter includes the third sequence offset of the uplink reference signal.

[0106] In some possible implementations, the first frequency domain resources are different from the third frequency domain resources, and / or the first generation parameters are different from the third generation parameters.

[0107] In some possible implementations, the first communication device and the second communication device belong to different cells.

[0108] In a seventh aspect, a communication device is provided, which has the function of implementing the methods in the first aspect to the second aspect and any possible implementation thereof. For example, the communication device includes a module, unit or means corresponding to the operation involved in performing the methods in the first aspect to the second aspect and any possible implementation thereof. The module or unit or means may be implemented by software, or by hardware, or by a combination of software and hardware.

[0109] Eighthly, a communication device is provided, the device comprising one or more processors. The one or more processors are capable of executing part or all of a computer program or instructions stored in a memory necessary for implementing the functions involved in the methods of the first to second aspects and any possible implementations thereof, wherein, when the computer program or instructions are executed, the communication device implements the methods of the first to second aspects and any possible implementations thereof.

[0110] In some possible implementations, the communication device may also include interface circuitry, through which the processor communicates with other devices or components.

[0111] In some possible implementations, the communication device may also include the memory.

[0112] The aforementioned communication device may be a terminal, a communication module in a terminal, or a chip in a terminal that is responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip that contains a modem module.

[0113] A ninth aspect provides a communication device, the device comprising: a processor for executing computer instructions to cause the device to perform the methods of the first to second aspects and any possible implementation thereof.

[0114] In some possible implementations, the device also includes a memory.

[0115] In some possible implementations, the device also includes a communication interface coupled to the processor, which is used for inputting and / or outputting information.

[0116] In a tenth aspect, a computer program product is provided, which, when executed by a communication device, implements the methods of the first aspect to the second aspect and any possible implementation thereof.

[0117] Eleventhly, a computer-readable storage medium is provided, characterized in that the storage medium stores a computer program or instructions, which, when executed by a communication device, implement the methods of the first to second aspects and any possible implementation thereof.

[0118] In a twelfth aspect, a chip (or chip system) is provided, including at least one processor for running a computer program that causes a device having the chip mounted to perform the methods described in the first to second aspects and any possible implementation thereof.

[0119] The chip may include an output circuit or interface for transmitting information or data, and an input circuit or interface for receiving information or data.

[0120] In a thirteenth aspect, a communication system is provided, comprising: a network device and a terminal device, wherein the network device is configured to perform the method in the possible implementation of the first aspect described above, and the terminal device is configured to perform the method in the possible implementation of the second aspect described above. Attached Figure Description

[0121] Figure 1 This is a schematic diagram of a communication system applicable to embodiments of this application.

[0122] Figure 2 This is a schematic diagram of channel estimation provided in an embodiment of this application.

[0123] Figure 3 This is a schematic diagram of an SRS resource configuration provided in an embodiment of this application.

[0124] Figure 4 This is a schematic diagram of the frequency domain subcarriers occupied by the comb teeth under different comb tooth degrees, provided in the embodiments of this application.

[0125] Figure 5 This is a schematic diagram of the frequency domain resources occupied by the transmission of SRS provided in the embodiments of this application.

[0126] Figure 6 This is a schematic diagram of SRS transmission in a coherent joint transmission (CJT) scenario provided in an embodiment of this application.

[0127] Figure 7 This is a schematic diagram showing the response of the SRS1 and SRS2 channel estimation results provided in the embodiment of this application in the time delay domain, and how the time delay difference causes SRS interference.

[0128] Figure 8 This is a schematic diagram of SRS resource configuration provided in an embodiment of this application.

[0129] Figure 9 This is a schematic diagram of another SRS resource configuration provided in an embodiment of this application.

[0130] Figure 10 This is a possible schematic diagram of different UEs in adjacent cells transmitting SRS, provided in an embodiment of this application.

[0131] Figure 11 This is a schematic diagram of a communication method provided in an embodiment of this application.

[0132] Figure 12 This is a schematic diagram of an SRS transmission provided in an embodiment of this application.

[0133] Figure 13 This is a schematic diagram of another SRS transmission method provided in an embodiment of this application.

[0134] Figure 14 This is a schematic block diagram of a communication device provided in an embodiment of this application.

[0135] Figure 15 This is a schematic block diagram of a communication device provided in an embodiment of this application. Detailed Implementation

[0136] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0137] The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” “the,” and “this” are intended to also include expressions such as “one or more,” unless the context clearly indicates otherwise. It should also be understood that in the following embodiments of this application, “at least one,” “one or more” refers to one, two, or more than two. The character “ / ” generally indicates that the preceding and following objects are in an “or” relationship.

[0138] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0139] The technical solutions provided in this application can be applied to various communication systems, such as: Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Wireless Local Area Network (WLAN) systems, Narrow Band Internet of Things (NB-IoT) systems, Global System for Mobile Communications (GSM), Enhanced Data Rate for GSM Evolution (EDGE), Wideband Code Division Multiple Access (WCDMA) systems, Code Division Multiple Access 2000 (CDMA2000) systems, Time Division-Synchronization Code Division Multiple Access (TD-SCDMA) systems, 5th Generation (5G) or New Radio (NR) systems, and next-generation mobile communication systems (such as 6th Generation (6G), or higher versions of communication systems).

[0140] The technical solutions provided in this application can also be applied to device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), and Internet of Things (IoT) communication systems or other communication systems.

[0141] 5G NR V2X can support lower transmission latency, more reliable communication, higher throughput, and a better user experience, meeting the needs of a wider range of application scenarios. Furthermore, the vehicle-to-vehicle communication technology supported by V2X can be extended to D2D communication in any system.

[0142] For future connected vehicle services, such as L4 autonomous driving vehicle networking services and in-vehicle entertainment services, as well as L4 autonomous driving scenarios, single-vehicle perception is limited, with blind spots and limited perception capabilities in rain and snow. V2X can provide information perceived by roadside perception devices to expand the perception range. For example, perception radar or cameras are installed on the roadside to collect information in real time, and then the information is sent to vehicles on the road through base stations or roadside units (RSUs) to help vehicles on the road perform autonomous driving better.

[0143] However, the above services have high requirements for speed, latency and reliability. Taking roadside perception information as an example, the data size generated by a single frame can reach several Mbits, and the corresponding transmission latency can be in the millisecond or tens of milliseconds. In addition, a single frame needs to be accurately provided to the vehicle side to ensure the accuracy of the data.

[0144] In this application embodiment, the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user device. This application embodiment uses a terminal device as an example for illustration.

[0145] Figure 1 This is a schematic diagram of a wireless communication system 100 applicable to embodiments of this application. For example... Figure 1 As shown, the wireless communication system includes a wireless access network 100. The wireless access network 100 can be a next-generation (e.g., 6G or higher) wireless access network or a traditional (e.g., 5G, 4G, 3G, or 2G) wireless access network. One or more terminal devices (120a-120j, collectively referred to as 120) can be interconnected or connected to one or more network devices (110a, 110b, collectively referred to as 110) within the wireless access network 100. Network elements in the wireless communication system are connected via interfaces (e.g., NG, Xn) or over-the-air interfaces.

[0146] Figure 1 This is just an illustration; the wireless communication system may also include other devices, such as core network (CN) equipment, wireless relay equipment, and / or wireless backhaul equipment. Figure 1 It is not shown in the middle.

[0147] Terminal device 120 can be a device that provides voice / data, such as a handheld device or vehicle-mounted device with wireless connectivity. Currently, some examples of terminal devices include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving vehicles, complete vehicles, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, wearable devices, terminal devices in 5G networks, or future public land mobile communication networks. Terminal devices in a network (PLMN), etc., are not limited in this application embodiment.

[0148] In this embodiment, the device used to implement the function of the terminal device 120, i.e., the terminal device, can be the terminal device itself or a device capable of supporting the terminal device in implementing the function, such as a chip system, a chip, or a communication module. This device can be installed in the terminal device. In this embodiment, the chip system can be composed of chips or can include chips and other discrete components.

[0149] In the mobile communication system 100, the network device 110 in this embodiment can be a device for communicating with terminal devices. The network device 110 can also be referred to as an access network device or a radio access network (RAN) node (or device), such as a base station. In this embodiment, the network device 110 can refer to a radio access network that connects the terminal device 120 to the wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master station, auxiliary station, motor slide retainer (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or a combination thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. Base stations can also be mobile switching centers, devices that perform base station functions in D2D, V2X, and M2M communications, network-side devices in 6G networks, and devices that perform base station functions in future communication systems. Base stations can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0150] In some deployments, the network devices mentioned in the embodiments of this application may be devices including CU, or DU, or devices including CU and DU, or devices with control plane CU nodes (central unit-control plane (CU-CP)) and user plane CU nodes (central unit-user plane (CU-UP)) and DU nodes.

[0151] In different systems, the CU (or CU-CP and CU-UP), DU, or radio unit (RU) may have different names, but those skilled in the art will understand their meaning. For example, in an open RAN (ORAN) system, the CU may also be called O-CU (open CU), the DU may also be called O-DU, the CU-CP may also be called O-CU-CP, the CU-UP may also be called O-CU-UP, and the RU may also be called O-RU. Any of the units among the CU (or CU-CP, CU-UP), DU, and RU in this application may be implemented through software modules, hardware modules, or a combination of software modules and hardware modules.

[0152] In this embodiment, the apparatus for implementing the function of network device 110 can be the network device itself, or it can be an apparatus capable of supporting the network device in implementing the function, such as a chip system or a chip. This apparatus can be installed in the network device. In this embodiment, the chip system can be composed of chips, or it can include chips and other discrete components.

[0153] In this embodiment, a device in the communication system 100 can send signals to or receive signals from another device. These signals may include information, signaling, data, or reference signals, etc.; the device may also be replaced by an entity, network entity, communication device, communication module, node, communication node, etc., but this application uses a device as an example for description. For instance, the communication system 100 may include at least one terminal device 120 and at least one network device 110. The network device 110 can send downlink signals to the terminal device 120, and / or the terminal device 120 can send uplink signals to the network device 110.

[0154] It should be understood that Figure 1 This is an example illustration of a communication system applicable to the embodiments of this application. It is a simplified diagram for ease of understanding only. The communication system described above may also include other network devices or other terminal devices. Figure 1 It is not shown in the figure. The embodiments of this application can be applied to any communication scenario in which the sending end device and the receiving end device communicate.

[0155] The communication system used in the embodiments of this application is not limited to this. In practical applications, the embodiments of this application are applicable to any scenario in which the device performs channel measurement via SRS.

[0156] It should be understood that Figure 1 This is a simplified illustration for ease of understanding only. The communication system may also include other network devices or other terminal devices. Figure 1 It was not drawn in the middle.

[0157] It should also be understood that Figure 1 These are merely illustrative application scenarios for embodiments of this application, and this application does not limit the scenarios in which the method is applied. This application can be applied to communication between network devices, communication between network devices and terminal devices, communication between terminal devices, etc., and the embodiments of this application do not limit this.

[0158] The embodiments shown below are for ease of understanding and illustration only, and the method provided by the embodiments of this application is described in detail using the interaction between network devices and terminal devices as an example.

[0159] To facilitate understanding of the embodiments of this application, the terminology involved in the embodiments of this application will be briefly introduced below.

[0160] (1) SRS: SRS is an uplink reference signal sent by a terminal device to a network device. After receiving the SRS, the network device can obtain the uplink and downlink channels from the terminal device to the network device based on the SRS. If the uplink and downlink channels are reciprocal in a TDD system, the downlink channel information from the network device to the terminal device can also be obtained based on the uplink channel information using the SRS. After obtaining the downlink channel information corresponding to the terminal device, the network device can perform data transmission resource scheduling or precoding processing on the terminal device based on the channel information.

[0161] Figure 2 This is a schematic diagram of channel estimation provided in an embodiment of this application. A possible channel estimation process is as follows:

[0162] Step 1: The UE sends an SRS to the base station, and the base station performs channel estimation based on the uplink SRS.

[0163] Step 2: The base station sends data to the UE using a weight W.

[0164] Step 3: Complete downlink scheduling and data transmission based on downlink CSI.

[0165] For example, such as Figure 2 As shown, if all antennas (Ant 0 to 3) of a UE with 2T4R (2 transmit antennas and 4 receive antennas) can transmit SRS, a base station with 64 transceivers (64TRX: Rx0 to Rx63) can obtain a 4*64 matrix H of full channel information based on the reciprocity of uplink and downlink channels and the same uplink and downlink channel matrices in the TDD system.

[0166] Figure 3 This is a schematic diagram of an SRS resource configuration provided in an embodiment of this application. A typical scheme for SRS resource configuration is to transmit SRS on each RB of the 13th symbol of the time slot to achieve channel measurement across the entire frequency band. For example... Figure 3 As shown, Figure 3 In this spectrum, D is used for transmitting downlink data, U is used for transmitting uplink data, and S is used for transmitting SRS. However, full-band reuse can cause different UEs in adjacent cells to use the same SRS resources, which may lead to severe uplink measurement interference.

[0167] (2) Port: A port can also be called an SRS port or an antenna port. An SRS port is used to carry an SRS. Each port corresponds to one SRS, and different ports can be multiplexed using code division, frequency division, time division, or space division. In one implementation, an SRS resource may include... There are one SRS port, and each SRS port can correspond to a configured time-frequency code resource. Typically, each SRS port can occupy a different time-frequency code domain resource to reduce mutual interference. Each SRS port can correspond to either a physical antenna or a virtual antenna on the terminal device.

[0168] (3) Cyclic Shift: For different SRS ports, code division multiplexing can be used to transmit on the same time-frequency resources. By multiplying the SRS sequence in the frequency domain by a phase offset factor, an equivalent time-domain response with a cyclic shift can be achieved. Taking advantage of the fact that the maximum delay of the channel is often limited, code division orthogonality can be achieved for different SRS ports through appropriate cyclic shift offset. The appropriate cyclic shift can be called CS. Specifically, the cyclic shift is applied to the transmitted sequence. Due to the characteristics of the transmitted sequence, applying a cyclic shift to the transmitted sequence is equivalent to offsetting the signal in the time delay domain. When different signals are offset differently, the multiplexing effect is achieved.

[0169] (4) Comb: For different SRS ports, transmission can be performed on different frequency domain subcarriers through frequency division multiplexing. The comb divides the frequency domain subcarriers into multiple groups, and the frequency domain spacing between two adjacent subcarriers in each group is a fixed value. CO is a way to distinguish different subcarriers in the frequency domain. Different comb offset values ​​represent different subcarrier groups or subcarrier positions in the frequency domain. SRS resources achieve frequency division multiplexing between ports by allocating different comb offset values ​​to different ports. Figure 4 This is a schematic diagram illustrating the frequency domain subcarriers occupied by the comb teeth under different comb tooth densities, as provided in the embodiments of this application. Figure 4 For example, a comb tooth is a subset of subcarriers extracted at equal intervals in the frequency domain, where the extraction interval is called the comb tooth degree K. TC This is a pre-configured value in radio resource control (RRC), typically set to 2, 4, or 8. For example... Figure 4 As shown in (a), when K TC When the value is 2, the frequency domain can be divided into two comb teeth, allowing for frequency division multiplexing of two sets of SRS ports; for example... Figure 4 As shown in (b) above, when K TC When the value is 4, the frequency domain can be divided into four comb teeth, providing frequency division multiplexing for four groups of SRS ports; for example... Figure 4 As shown in (c), when K TC When the value is 8, the frequency domain can be divided into eight comb teeth, which can be used for frequency division multiplexing of eight SRS ports. Figure 4 A small square represents a subcarrier, and the shaded squares are examples of the subcarrier positions occupied by the comb teeth with a comb tooth offset value of 0 under different comb tooth degrees.

[0170] (5) SRS Measurement Bandwidth and Frequency Hopping Bandwidth: The SRS measurement bandwidth is the total bandwidth used by the network device to perform channel measurements via SRS. At each SRS transmission moment, the SRS resource can transmit signals over the entire measurement bandwidth or only over a portion of the measurement bandwidth. When signals are transmitted only over a portion of the measurement bandwidth, it is called SRS frequency hopping transmission, and the length of the portion of bandwidth transmitted each time is the frequency hopping bandwidth. Through multiple SRS transmission moments, the network device can obtain the channel corresponding to the entire SRS measurement bandwidth. Figure 5 This is a schematic diagram illustrating the frequency domain resources occupied by SRS transmission according to an embodiment of this application. Figure 5 For example, a small square in the figure represents a sub-band in the frequency domain (e.g., a resource block (RB)), and the transmission bandwidth of SRS is 272RB.

[0171] The technical problem to be solved and the technical solution adopted in this application are described below with reference to the accompanying drawings.

[0172] The Reference Signal (SRS) is a crucial reference signal for obtaining channel state information, especially in TDD systems. Leveraging the reciprocity of uplink and downlink channels, uplink and downlink channel information can be obtained through SRS. In practical systems, considering the overhead of the reference signal and the performance of channel estimation, the number of available orthogonal SRS resources is often limited. However, networks contain numerous cells, and terminal devices in each cell transmit SRS for channel measurements. This leads to the reuse of limited orthogonal SRS resources across multiple cells. For example, under one SRS resource allocation strategy, terminal devices within each cell may be allocated orthogonal SRS resources, while different cells may be allocated non-orthogonal SRS resources, resulting in inter-cell SRS interference. Currently, SRS interference is one of the key factors limiting system performance.

[0173] Figure 6 This is a schematic diagram of SRS transmission in a coherent joint transmission (CJT) scenario provided in an embodiment of this application. Figure 6As shown, taking CJT transmission using two TRPs as an example, TRP1 and TRP2 need to obtain channel information between UE1 and UE2 and TRP1 and TRP2 via SRS. By configuring an SRS resource SRS1 and SRS2 for UE1 and UE2 respectively (assuming the maximum number of SRS CS configured for UE1 and UE2 is 12, SRS1 occupies CS 0 / 3 / 6 / 9, while SRS2 occupies CS1 / 4 / 7 / 10, and without delay difference, SRS1 and SRS2 occupy different delay intervals in the delay domain, thus ensuring code division orthogonality), both TRP1 and TRP2 can receive SRS1 and SRS2 sent by UE1 and UE2. Figure 7 This is a schematic diagram illustrating the time delay domain response of the SRS1 and SRS2 channel estimation results provided in the embodiments of this application, and how the time delay difference causes SRS interference. Figure 7 As shown, both UEs under two adjacent base stations need to send uplink reference signals (SRS) to measure channel quality. However, since both base stations TRP1 and TRP2 receive uplink SRS signals, it causes interference problems in uplink channel measurement.

[0174] In another possible scenario where UEs in adjacent cells transmit SRS, the UEs in adjacent cells use the same SRS resources to transmit SRS, and both UEs may be located in the edge area of ​​the adjacent cells. In this case, the base stations of the two cells (for example, base station 1 provides services to devices in cells #1 and #2, cells #1 and #2 are adjacent and UE1 is in cell #1 and UE2 is in cell #2, in which case the base station of the two cells is base station 1; or, base station 1 provides services to UE1 in cell #1 and base station 2 provides services to UE2 in cell #2, in which case the base stations of the two cells are base station 1 and base station 2) can both receive SRS1 and SRS2 transmitted by UE1 and UE2, which will lead to SRS interference between cells.

[0175] The method of SRS interference randomization is introduced below.

[0176] As mentioned above, SRS interference is one of the key factors affecting the performance of communication systems. In order to reduce the impact of SRS interference on the system and avoid the problem of poor channel estimation quality caused by continuous strong interference to SRS, SRS interference randomization is an effective means.

[0177] SRS CS hopping is an effective method for randomizing interference. At different SRS transmission times, the cyclic shift offset value CS corresponding to the SRS port of the target SRS resource can be randomly varied, thereby avoiding the continuous impact of strong interference. When SRS CS hopping is enabled, a port p in the SRS resource... i The corresponding SRS sequence can satisfy:

[0178]

[0179] Wherein, parameter w TDM Indicates the quantity, configured by higher-level parameters, and can be 0 or 1; The SRS base sequences are typically Zadoff-Chu (ZC) sequences, and the specific generation method depends on the sequence length. v and u represent the numbers of specific base sequences within the SRS base sequence group. For different SRS sequence lengths, at least 30 base sequences can be used. Each group corresponds to a group number u (u = 0, 1, 2, ..., 29). Based on different SRS sequence lengths, each group further includes one or two base sequences, corresponding to sequence numbers v (v = 0, 1). δ = log2(K TC ), α i This indicates the corresponding antenna port p i The cyclic shift, l′ represents the orthogonal frequency division multiplexing (OFDM) symbol index of the SRS resource, and n represents the sequence element number. From the above formula (1), it can be seen that given a fixed cyclic shift and the antenna port number p... i The generated SRS sequence can be uniquely determined by the symbol index l′.

[0180] Based on the above formula (1), SRS port p i Corresponding CSα i It can satisfy:

[0181]

[0182] in, The value of K is configured by the higher-level parameter `transmissionComb`. K is a function related to the number of antenna ports and is configured by the higher-level parameter `hoppingFinerGranularity`. K can take the value 1 or 2. This indicates the maximum number of cyclic shifts, configured by higher-level parameters. When the higher-level parameter `cyclicShifiHopping` is configured, the parameter... It can be in A value is randomly selected from the data to achieve random changes in the time domain.

[0183] For example, such as Figure 8 As shown, Figure 8 This is a schematic diagram of SRS resource configuration provided in an embodiment of this application. Figure 8In the diagram, (a) indicates an SRS resource configuration that does not involve SRS CS hopping. Figure 8 In the diagram, (b) represents an SRS resource configuration that has undergone SRSCS hopping. The horizontally filled squares represent SRS resources configured for the traditional UE, and the cross-line filled squares represent SRS resources used by the UE. CS 0 and CS 1 form a subset, CS 3-CS 5 form a subset, and CS 7 forms a subset. From... Figure 8 As can be seen, apart from the SRS resource configuration used by the traditional UE, without time-domain randomization, the SRS sent at different time-domain locations ( Figure 8 The configurations of CS0-CS7 in (a) are fixed, and different UEs in adjacent cells may use the same SRS sequence, resulting in conflicts; after adopting time-domain sequence randomization, different UEs using the same subset of SRS resources can send different SRS sequences. Figure 8 (b) CS0-CS7) in the above, to avoid conflicts.

[0184] SRS CO hopping is another method for randomizing interference. At different SRS transmission times, the comb offset value CO corresponding to the SRS port of the target SRS resource can be randomly varied, thus avoiding the continuous impact of strong interference. When SRS COhopping is enabled, the SRS port p... i The corresponding frequency domain starting position can satisfy:

[0185]

[0186]

[0187] The resource length occupied by the frequency domain can satisfy:

[0188]

[0189] in, Know as well as These are all determined by the high-level parameters configured. This represents the offset of CO at each SRS transmission time. It can be in a set A value randomly selected from the data, m SRS，b It was selected from the configuration table, K. TC ∈{2, 4, 8} is configured by the high-level parameter transmissionComb, P F ∈{2,4} is configured by the high-level parameter FreqScalingFactor.

[0190] For example, such as Figure 9 As shown, Figure 9 This is a schematic diagram of another SRS resource configuration provided in an embodiment of this application. Figure 9 In the example, (a) indicates an SRS resource configuration that does not involve SRS CO hopping. Figure 9 In the diagram, (b) indicates an SRS resource configuration that has undergone SRS CO hopping. Vertically filled squares represent SRS resources occupied by SRS symbols of other SRS resources, horizontally filled squares represent SRS resources configured for traditional UEs, and cross-line filled squares represent SRS resources used by the UE. From... Figure 9 As can be seen, in addition to the SRS resource configuration used by traditional UEs, without frequency domain randomization, different UEs in adjacent cells may use the same SRS resources (e.g., multiple UEs use...). Figure 9 In (a) of the symbol 13, there is a collision due to the combination 0; after adopting sequence randomization in the frequency domain, the UE can randomly transmit on combination 0 to 2 in each SRS transmission to avoid collision.

[0191] However, with the current SRS configuration method and time-frequency resource mapping method, as mentioned above, when multiple stations do not perform joint orthogonal SRS resource allocation, the SRS of different cells are not orthogonal to each other, thus causing inter-cell SRS interference. This is particularly severe for cell edge users, significantly impacting channel measurement performance. When multiple stations perform coordinated transmission and joint orthogonal SRS resource allocation, the varying distances between the UE and the multiple transmitting stations result in propagation delay differences, leading to SRS interference.

[0192] Although enabling SRS CS hopping or SRS CO hopping can mitigate the aforementioned SRS interference problem to some extent, the UE's CS hopping or CO hopping is random, and the aforementioned SRS interference still exists. For example, as... Figure 10 As shown, Figure 10 This is a possible schematic diagram of different UEs in adjacent cells sending SRS according to an embodiment of this application. The small squares filled with horizontal lines represent SRS resources configured by traditional UEs, and the small squares filled with cross lines represent SRS resources used by UEs. CS 0-CS2 form a CO hopping sub-region, and CS 4-CS 6 form a CO hopping sub-region. Figure 10 In the text, (a) indicates that UE1 and UE2 are in different neighboring cells. Figure 10In the diagram, (b) indicates that UE1 performs randomized selection of the reference signal. Figure 10 (c) indicates that UE1 performs randomized selection of the reference signal. If UE1 and UE2 select the same SRS sequence in the same CS hopping sub-region, since UE1 is in the cell served by base station 1 and UE2 is in the cell served by base station 2, and UE1 is close to UE2, the SRS sent by UE1 will inevitably cause serious interference to the channel measurement of UE2, affecting the channel state information measurement.

[0193] This application provides a communication method and a communication device. Based on the geographical location information of the UE, the frequency domain resources and / or sequence generation parameters for transmitting uplink reference signals are configured. This can prevent the uplink reference signals transmitted by the UE from being interfered with by the uplink reference signals transmitted by other UEs, thus avoiding poor channel estimation quality.

[0194] The following describes in detail the possible implementations of the communication method 1100 of the present application embodiments, taking a communication system including one or more network devices (e.g., base station 1 and / or base station 2) and one or more terminal devices (e.g., UE1 and UE2) as an example.

[0195] Figure 11 A schematic diagram of a communication method 1100 is shown. This method may include the following steps:

[0196] S1110, the network device determines the first geographical location of the first communication device, and correspondingly, the first communication device sends the first geographical location of the first communication device.

[0197] Specifically, taking the aforementioned first communication device as a terminal device as an example, the network device can determine the first geographical location of the terminal device. For example, the network device can receive the first geographical location of the terminal device sent by the terminal device.

[0198] For example, taking a communication system including a terminal device (UE1) and a network device (base station 1), before sending an uplink reference signal, UE1 can send its first geographical location to base station 1. Before UE1 sends its first geographical location to base station 1, base station 1 can instruct UE1 to send that first geographical location. For example, base station 1 sends indication information A, which instructs UE1 to send its first geographical location to base station 1. After receiving indication information A, UE1 sends its own first geographical location to base station 1. Cell 1 of base station 1 provides services to UE1.

[0199] For example, in some possible implementations, the first geographic location may include at least one or a combination of the following: lane information of the terminal device (e.g., the terminal device is a vehicle or part of a vehicle), geographic fingerprint information (e.g., the terminal device and the base station providing network services to the terminal device jointly maintain a virtual map, and the terminal device may send the grid index of the virtual map to the base station), spatial grid identity (zone ID) information of the terminal device, or grid identity (grid ID) information of the terminal device.

[0200] For example, in some possible implementations, the coverage area of ​​a cell can be divided into multiple grids (or grates, or spatial grids), with different grids corresponding to different labels. For instance, a base station divides the cell's coverage area into multiple spatial grids. For example, spatial grids can be labeled with zone IDs or grid IDs that have a one-to-one correspondence with each other.

[0201] Furthermore, the aforementioned spatial grids can be non-overlapping.

[0202] It is understood that the above-mentioned first geographical locations are merely possible examples, and any information that can identify the geographical location of different terminal devices can be included in the embodiments of this application, and the embodiments of this application do not limit this.

[0203] For example, in some possible implementations, the first geographic location may be indicated by uplink control information (UCI), by media access control-control element (MAC-CE), or periodically reported by the terminal device. The reporting period may be configured by network RRC parameters, or it may be indicated by downlink control information (DCI) to instruct the terminal device to report. This application embodiment does not limit this.

[0204] Based on the solution provided in the embodiments of this application, by configuring the first configuration information of the first frequency domain resources indicating the uplink reference signal and / or the first generation parameters of the uplink reference signal sequence for the first communication device according to the first geographical location by the network device, it is helpful to avoid the uplink reference signal sent by the UE being interfered with by the uplink reference signal sent by other UEs in different geographical locations, resulting in poor channel estimation quality.

[0205] S1120, the network device sends first configuration information according to the first geographical location, and correspondingly, the first communication device receives the first configuration information determined according to the first geographical location. The first configuration information indicates the first frequency domain resources of the uplink reference signal and / or the first generation parameters of the sequence of the uplink reference signal.

[0206] Specifically, the network device can send first configuration information to the terminal device based on the first geographical location. The first configuration information can indicate the first frequency domain resources of the uplink reference signal and / or the first generation parameters of the uplink reference signal sequence.

[0207] For example, in some possible implementations, the uplink reference signal can be an SRS.

[0208] Optionally, in some possible implementations, the uplink reference signal can also be a reference signal transmitted by other terminals uplink, and this application does not limit this.

[0209] In some possible implementations, the first generation parameter indicates the first sequence offset.

[0210] Optionally, in some possible implementations, the first generation parameter includes a first sequence offset of the uplink reference signal.

[0211] Based on the solution provided in the embodiments of this application, the network device configures a first sequence offset for the first communication device according to the first geographical location, which helps to avoid the uplink reference signal sent by the UE having the same sequence offset as the uplink reference signal sent by other UEs, causing interference and resulting in poor channel estimation quality.

[0212] For example, after receiving the first geographical location sent by UE1, base station 1 can send first configuration information to UE1 based on the first geographical location. This first configuration information can indicate the first frequency domain resources of the uplink reference signal and / or the first generation parameters of the uplink reference signal sequence. For example, when SRS CO hopping is enabled, the SRS port p... i The corresponding frequency domain start position can satisfy the above equation (3), and this first configuration

[0213] Information can be obtained through The value indicates the first frequency domain resource; or, when SRS CS hopping is enabled, the SRS port p i Corresponding CSα i It can satisfy:

[0214]

[0215] Wherein, the parameter fixedoffset represents the SRS sequence offset, and the value of fixedoffset can satisfy... The first configuration information may include the value of fixedoffset. The first configuration information may indicate the first generation parameter through the value of fixedoffset. The value of fixedoffset may be indicated by RRC or by the base station through MAC-CE.

[0216] It is understood that the above parameter fixedoffset is just one example of offset, and other parameters can also be used to represent offset. This application does not limit this.

[0217] For example, the first frequency domain resources of the SRS indicated by the first configuration information satisfy... The value can be a fixed value; or, the value of the fixedoffset satisfied by the first sequence offset indicated by the first configuration information can be a fixed value.

[0218] For example, the edge area of ​​cell 1 (or the area adjacent to other cells of cell 1) is set as the first area, and the first configuration information instructing UEs located in the first area to send SRS is set as the first mode (pattern 1). The first frequency domain resource or the first sequence offset of the SRS corresponding to the first mode can be a fixed value. When the first mode corresponds to Alternatively, in the first mode corresponding to fixedoffset=0, when base station 1 determines that UE1 is in the first area based on the first geographical location sent by UE1, base station 1 sends the first configuration information indication to UE1. satisfy Alternatively, the first configuration information sent by base station 1 to UE1 indicates that fixedoffset satisfies fixedoffset=0.

[0219] Optionally, in some possible implementations, the first generation parameter indicates the first sequence offset, including: the first generation parameter indicates a set of first sequence offsets.

[0220] Specifically, the first generation parameter can indicate a set of sequence offsets that the SRS satisfies. UE1 can randomly select (or select according to a certain rule) a sequence offset from this set for use. For example, the first generation parameter can indicate that the set of first sequence offsets satisfies is {fixedoffset1, fixedoffset2, fixedoffset3}. UE1 can randomly select a sequence offset from this set (for example, UE1 randomly selects fixedoffset1 from this set) and send the SRS according to the selected sequence offset (fixedoffset1).

[0221] In some possible implementations, the first geographic location is located in a first region, and first configuration information is sent based on the first geographic location, including: sending the first configuration information based on the first region, the first configuration information indicating a set of first frequency domain resources, and / or a set of first sequence offsets.

[0222] Based on the solution provided in this application, by configuring the set of frequency domain resources and / or the set of sequence generation parameters used for transmitting uplink reference signals by the network device according to the region where the UE is located, the frequency domain resources and / or sequence generation parameters used for transmitting uplink reference signals by UEs in different regions can be different. This helps to avoid the situation where the frequency domain resources and / or sequence offsets used for uplink reference signals transmitted by different UEs in different regions are the same, causing mutual interference between uplink reference signals transmitted by different UEs and resulting in poor channel estimation quality.

[0223] In some possible implementations, the first uplink reference signal is determined by the first communication device based on the first configuration information, including: the first uplink reference signal is determined based on the first frequency domain resources, and the first frequency domain resources are determined based on a set of first frequency domain resources; or, the first uplink reference signal is determined based on the first frequency domain resources, and the first frequency domain resources are determined based on a set of first sequence offsets.

[0224] Specifically, the cell is divided into a first region and a second region, and a set of first frequency domain resources and / or a set of first sequence offsets are configured according to the region. When base station 1 determines that UE1 is in the second region based on UE1's first geographical location, the first configuration information sent by base station 1 to UE1 may include the set of first frequency domain resources and / or the set of first sequence offsets.

[0225] For example, when SRS CO hopping is enabled, the SRS port p i The corresponding frequency domain start position can satisfy the above equation (3), and this first configuration information can be obtained through... The set of values ​​indicates the set of first frequency domain resources; or, when SRS CS hopping is enabled, the SRS port p i Corresponding CSα i It can satisfy the above formula (5), and the first configuration information can indicate the set of first sequence offsets through the set of values ​​of fixedoffset.

[0226] For example, dividing cell 1 into a first region and a second region, the first configuration information used to instruct UE1 located in the second region to send SRS may include a set of first frequency domain resources and / or a set of first sequence offsets. When base station 1 determines that UE1 is in the second region based on the first geographical location sent by UE1, the first configuration information sent by base station 1 to UE1 may indicate... The value of satisfies the set of first frequency domain resources configured for the second region, Zone#2 = {R1, R3, R5, ...} (for example, the first configuration information indicates...). It can satisfy (any one of the following), or, the first configuration information sent by base station 1 to UE1 may indicate that the value of fixedoffset satisfies the set of first sequence offsets configured for the second region, Zone#2 = {R1, R3, R5, ...} (for example, the first configuration information indicates that fixedoffset can satisfy...). (any one of them).

[0227] S1130, the network device receives the first uplink reference signal, and correspondingly, the first communication device sends the first uplink reference signal, which is determined by the first communication device according to the first configuration information.

[0228] Specifically, base station 1 can receive the first uplink reference signal sent by UE1. The first uplink reference signal is determined by UE1 based on the first configuration information after receiving the first configuration information.

[0229] For example, UE1 can be configured according to the first configuration information. The value satisfies determines the first frequency domain resource of the first uplink reference signal, or UE1 can determine the first sequence offset of the first uplink reference signal based on the value satisfied by the fixedoffset indicated by the first configuration information.

[0230] For example, UE1 can be configured as indicated by the first configuration information. From the set of resources satisfying the first frequency domain condition, select a value as... The value of the fixed offset is used to determine the first frequency domain resource of the first uplink reference signal. Alternatively, UE1 can select a value from the set of first sequence offsets satisfied by the fixed offset indicated by the first configuration information as the value of the fixed offset, and determine the first sequence offset of the first uplink reference signal based on the value.

[0231] For example, the first configuration information indicates The set of first frequency domain resources that satisfy the requirements is: UE1 can select 5 from this set as The value of , the first frequency domain resource of the first uplink reference signal satisfies Alternatively, the set of first sequence offsets satisfied by the fixed offset indicated by the first configuration information is: UE1 can be selected from this set. As the value of fixedoffset, the first sequence offset of the first uplink reference signal satisfies

[0232] Optionally, in some possible implementations, the UE selects from the set. The value that the fixed offset satisfies can also be a value in the set. The values ​​that the fixed offset can satisfy may correspond to those of the UE, but this application does not limit this in the embodiments.

[0233] For example, taking a communication system that also includes a terminal device (UE2) as an example, the set corresponding to UE includes Alternatively, the values ​​that the fixed offset can satisfy can form a mapping relationship with the UE ID. For example, the SRS sent by UE1 in the set indicated by the first configuration information can satisfy... The value is Alternatively, the SRS sent by UE1 can satisfy a fixed offset value of [value missing]. The SRS sent by UE2 in the set indicated by the first configuration information can satisfy [the requirements]. The value is Alternatively, the SRS sent by UE2 can satisfy a fixed offset value of [value missing]. Alternatively, the SRS sent by UE2 in the set indicated by the first configuration information can satisfy the requirements. The value is Alternatively, the SRS sent by UE2 can satisfy a fixed offset value of [value missing]. The SRS sent by UE1 in the set indicated by the first configuration information can satisfy [the requirements]. The value is Alternatively, the SRS sent by UE1 can satisfy a fixed offset value of [value missing].

[0234] It is understandable that the set of UEs mentioned above includes... The mapping relationship between the values ​​of fixed offset and UEID is only for instances; any different UE ID and set... The mapping relationship that can satisfy the value of fixed offset can be included in the embodiments of this application, and the embodiments of this application do not limit it.

[0235] For example, in some possible implementations, the communication system includes at least one or more terminal devices (UE1 and UE2) and one or more network devices (base station 1, or base station 1 and other base stations), wherein base station 1 provides services to UE1 and UE2, UE1 belongs to cell 1, and UE2 belongs to cell 2, and cell 1 and cell 2 are different cells. Taking the second communication device as the terminal device as an example, before sending the uplink reference signal, UE2 can send its second geographical location to base station 1. Before UE2 sends its second geographical location to base station 1, base station 1 can instruct UE2 to send the second geographical location. For example, base station 1 sends indication information B, which instructs UE2 to send its second geographical location to base station 1. After receiving indication information B, UE2 sends its own second geographical location to base station 1.

[0236] For example, in some possible implementations, the second geographic location may include at least one or a combination of the following: lane information of the terminal device (e.g., the terminal device is a vehicle or part of a vehicle), geographic fingerprint information (e.g., the terminal device and a base station providing network services to the terminal device jointly maintain a virtual map, and the terminal device may send the grid index of the virtual map to the base station), zone ID information of the terminal device, or grid ID information of the terminal device.

[0237] In some possible implementations, cell 1 is divided into a first region and a second region, and cell 2 is divided into a third region and a fourth region. The third region and the second region can be geographically adjacent or partially intersecting regions. The first configuration information used to instruct UE1 located in the second region to send SRS may include a set of first frequency domain resources and / or a set of first sequence offsets; the second configuration information used to instruct UE2 located in the third region to send SRS may include a set of second frequency domain resources and / or a set of second sequence offsets. When base station 1 determines that UE1 is in the second region based on the first geographical location sent by UE1, the first configuration information sent by base station 1 to UE1 can indicate... The value of satisfies the set of first frequency domain resources configured for the second region, Zone#2 = {R1, R3, R5, ...}, or the first configuration information sent by base station 1 to UE1 can indicate that the value of fixedoffset satisfies the set of first sequence offsets configured for the second region, Zone#2 = {R1, R3, R5, ...}; when base station 1 determines that UE2 is in the third region based on the second geographical location sent by UE2, base station 1 sends...

[0238] The second configuration information sent by UE2 can indicate The value of satisfies the set of second frequency domain resources configured for the third region, Zone#3 = {R2, R4, R6, ...}, or the second configuration information sent by base station 1 to UE2 can indicate that the value of fixedoffset satisfies the set of second sequence offsets configured for the third region, Zone#3 = {R2, R4, R6, ...}.

[0239] The Zone parameter of this set can be indicated via RRC.

[0240] In some possible implementations, the frequency domain resources of the uplink reference signal are different for different cells.

[0241] Specifically, the base station configures the frequency domain resources for transmitting uplink reference signals for the UE based on the UE's geographical location. The frequency domain resources indicated by the configuration information sent by the base station to UEs in different cells are different.

[0242] In some possible implementations, the set of first frequency domain resources and the set of second frequency domain resources are orthogonal.

[0243] Specifically, the base station configures a set of frequency domain resources for the UE to send uplink reference signals based on the UE's geographical location. The set of frequency domain resources indicated by the configuration information sent by the base station to UEs in different cells are orthogonal.

[0244] Based on the solution provided in the embodiments of this application, by configuring orthogonal frequency domain resources for different cells, it helps to avoid mutual interference between SRS transmitted by UEs in different cells.

[0245] In some possible implementations, the sequence offset of the uplink reference signal is different for different cells.

[0246] Specifically, the base station configures the sequence offset for sending uplink reference signals for the UE based on the UE's geographical location. The sequence offset indicated by the configuration information sent by the base station to UEs in different cells is different.

[0247] Based on the solution provided in the embodiments of this application, by configuring different sequence offsets for different cells, it helps to avoid mutual interference between SRS sent by UEs in different cells.

[0248] In some possible implementations, cell 1 and cell 2 serve geographically adjacent areas.

[0249] In some possible implementations, whether the areas served by cell 1 and cell 2 are geographically adjacent is predefined.

[0250] Specifically, the base station can predefine whether the areas served by cell 1 and cell 2 are geographically adjacent.

[0251] In some other possible implementations, base station 1 provides services to UE1 and base station 2 provides services to UE2, where UE1 belongs to cell 1 and UE2 belongs to cell 2, and cell 1 and cell 2 are different cells.

[0252] In some possible implementations, base station 1 and base station 2 can obtain geographical location information sent by UEs within the serving cell of other base stations through information exchange. For example, after base station 1 receives its first geographical location sent by UE1 to base station 1, base station 2 can obtain the first geographical location through information exchange with base station 1; or, after base station 2 receives its second geographical location sent by UE2 to base station 2, base station 1 can obtain the second geographical location through information exchange with base station 1.

[0253] In some possible implementations, base station 1 or base station 2 determines that the distance between the first geographical location and the second geographical location is less than a first threshold, or that the distance between the center of the first area and the center of the second area is less than or equal to a second threshold. When the first geographical location is located in the first area and the second geographical location is located in the second area, base station 1 and base station 2 instruct UE1 and UE2 to send different frequency domain resources or sequence offsets for SRS.

[0254] For example, base station 1 or base station 2 obtains the geographical location information sent by the UE in the serving cell of other base stations through information interaction between base stations, and determines that the distance between the first geographical location and the second geographical location is less than a first threshold, or the distance between the center of the first area and the center of the second area is less than or equal to a second threshold. When the first geographical location is located in the first area and the second geographical location is located in the second area, base station 1 and base station 2 can negotiate the first configuration information and the second configuration information sent to the UE, such that the frequency domain resources for SRS sent by UE1 in the first configuration information are different from or orthogonal to the frequency domain resources for SRS sent by UE2 in the second configuration information; or, the sequence offset for SRS sent by UE1 in the first configuration information is different from or orthogonal to the sequence offset for SRS sent by UE2 in the second configuration information.

[0255] For example, when UE1's first geographical location is in a first region and UE2's second geographical location is in a second region, and the distance between the center of the first region and the center of the second region is less than or equal to a second threshold, base station 1 and base station 2 can negotiate to send first configuration information and second configuration information to the UE, such that the frequency domain resources for UE1 to send SRS as instructed by the first configuration information are different from or orthogonal to the frequency domain resources for UE2 to send SRS as instructed by the second configuration information; or, the sequence offset for UE1 to send SRS as instructed by the first configuration information is different from or orthogonal to the sequence offset for UE2 to send SRS as instructed by the second configuration information.

[0256] For example, when SRS CS hopping is enabled and base station 1 and / or base station 2 determines that the distance between UE1 and UE2 is less than or equal to a first threshold, base station 1 can instruct UE1 to use a sequence offset that satisfies: fixedoffset = 0, and base station 2 can instruct UE2 to use a sequence offset that satisfies: Alternatively, base station 1 can instruct UE1 to use a sequence offset that satisfies the following when transmitting the SRS sequence: Base station 2 can instruct UE2 to use the sequence offset to send the SRS sequence, which satisfies the following:

[0257] For example, when SRS CO hopping is enabled and base station 1 determines that the distance between UE1 and UE2 is less than or equal to a first threshold, and / or base station 2 determines that the distance between UE1 and UE2 is less than or equal to the first threshold, base station 1 can instruct UE1 to use frequency domain resources to send the SRS sequence that satisfy: Base station 2 can instruct UE2 to use the frequency domain resources to transmit the SRS sequence, which must satisfy: Alternatively, base station 1 can instruct UE1 to use frequency domain resources that satisfy the following conditions when transmitting the SRS sequence: Base station 2 can instruct UE2 to use the frequency domain resources to transmit the SRS sequence, which must satisfy:

[0258] Based on the solution provided in the embodiments of this application, by configuring the frequency domain resources and / or sequence generation parameters used for transmitting uplink reference signals according to the distance between different UEs' geographical locations being less than or equal to a first threshold, or according to the distance between the center of the area where different UEs' geographical locations are located being less than or equal to a second threshold, the network device can avoid mutual interference between uplink reference signals transmitted by UEs that are close to each other, which would lead to poor channel estimation quality.

[0259] In some possible implementations, the first threshold is configured, pre-configured, or indicated by an instruction message; and / or, the second threshold is configured, pre-configured, or indicated by an instruction message.

[0260] For example, the first threshold is configured or pre-configured or indicated by RRC indication information; and / or, the second threshold is configured or pre-configured or indicated by RRC indication information.

[0261] Regarding configuration and pre-configuration: In this application, both configuration and pre-configuration can be used as indication methods. Configuration can refer to the method by which higher layers of the base station or network devices such as servers instruct the base station physical layer or terminal devices on the configuration information or values ​​of certain parameters through messages or signaling, so that the base station physical layer or terminal devices can determine the communication parameters or the resources used during transmission based on the aforementioned values ​​or configuration information. Pre-configuration is similar to configuration. Pre-configuration can refer to the method by which higher layers of the base station or network devices such as servers send parameter information or values ​​to the base station physical layer or terminal devices through communication links or carriers. Pre-configuration can also refer to the definition of corresponding parameters or parameter values ​​given in the standard, or the method by setting relevant parameters or values ​​in the terminal device in advance, such as configuring relevant parameters during factory settings. This application does not limit this.

[0262] It is understandable that the values ​​and parameters of the above configuration and pre-configuration as an indication can be changed or updated.

[0263] It is understandable that the fixed offset indicated by the aforementioned base station or The value of is merely an example. Any value that satisfies the condition that the distance between UE1 and UE2 is less than or equal to a first threshold (e.g., distance(UE1-UE2)≤threshold1) indicates that the first frequency domain resource indicated by base station 1 and the second frequency domain resource indicated by base station 2 are orthogonal. The values ​​of all can be included in the embodiments of this application. The first sequence offset indicated by base station 1 and the second sequence offset indicated by base station 2 are orthogonal. The values ​​of fixedoffset can be included in the embodiments of this application, and the embodiments of this application do not limit this.

[0264] In some possible implementations, method 1100 further includes: receiving a second uplink reference signal, the second uplink reference signal being determined by a second communication device according to second configuration information, the second configuration information indicating a second frequency domain resource of the uplink reference signal and / or a second generation parameter of the sequence of the uplink reference signal; transmitting third configuration information in at least one of the following cases: the first frequency domain resource is the same as the second frequency domain resource, or the first generation parameter is the same as the second generation parameter, wherein the third configuration information indicates a third frequency domain resource of the uplink reference signal and / or a third generation parameter of the sequence of the uplink reference signal; and receiving a third uplink reference signal, the third uplink reference signal being determined by a first communication device according to the third configuration information.

[0265] Specifically, when base station 1 (or base station 2) determines that UE1 is in a first region and UE2 is in a second region (the first region can be the edge region of cell 1, and the second region can be the edge region of cell 2, where cell 1 and cell 2 are different cells), and when base station 1 (or base station 2) determines that UE1 and UE2 use the same frequency domain resources (or the same generation parameters, or the same sequence offset) to transmit SRS, base station 1 can re-instruct UE1 on the frequency domain resources or generation parameters (e.g., sequence offset) to transmit the SRS sequence by sending third configuration information; alternatively, base station 2 can re-instruct UE2 on the frequency domain resources or generation parameters (e.g., sequence offset) to transmit the SRS sequence by sending third configuration information. The third configuration information indicates the third frequency domain resources of the uplink reference signal and / or the third generation parameters of the uplink reference signal sequence. The first communication device can determine and transmit the third uplink reference signal based on the third configuration information.

[0266] Optionally, in some possible implementations, the third generation parameter indicates the third sequence offset.

[0267] Optionally, in some possible implementations, the third generation parameter indicates the third sequence offset, including: the third generation parameter indicates a set of third sequence offsets.

[0268] Specifically, the third generation parameter can indicate a set of sequence offsets that the SRS satisfies. UE1 can randomly select (or select according to a certain rule) a sequence offset from this set for use. For example, the third generation parameter can indicate a set of {fixedoffset1, fixedoffset2, fixedoffset3} that the third sequence offset satisfies. UE1 can randomly select a sequence offset from this set (e.g., UE1 randomly selects fixedoffset1 from this set) and send the SRS according to the selected sequence offset (fixedoffset1).

[0269] For example, the third generation parameter may include a third sequence offset of the uplink reference signal.

[0270] In some possible implementations, the first frequency domain resource is different from the third frequency domain resource, and / or the first generation parameter is different from the third generation parameter.

[0271] For example, the sequence offset used by base station 1 to re-instruct UE1 to transmit the SRS sequence can satisfy:

[0272]

[0273] in, The values ​​of satisfy: Alternatively, the sequence offset used by base station 1 to re-instruct UE1 to transmit the SRS sequence can satisfy the following:

[0274]

[0275] In formula (7) The range of values ​​and the above The range of values ​​is the same; or, base station 1 re-instructs UE1 to use the sequence offset to send the SRS sequence, which satisfies the above equation (5), and, The value of is different from the sequence offset used by the UE to send the SRS sequence before the base station re-indicates.

[0276] For example, the sequence offset re-indicated by base station 1 or base station 2 can be orthogonal to the sequence offset used by the UE to send the SRS sequence before the base station re-indicated.

[0277] For example, the base station determines that the sequence offsets used by UE1 and UE2 to transmit SRS both satisfy the following conditions. The sequence offset re-indicated by base station 1 or base station 2 satisfies or

[0278] In some possible implementations, base station 1 may re-instruct UE1 on the frequency domain resources used to transmit the SRS sequence, or base station 2 may re-instruct UE2 on the frequency domain resources used to transmit the SRS sequence. The re-instructed frequency domain resources may be third frequency domain resources.

[0279] For example, the frequency domain resources used by base station 1 to re-instruct UE1 to transmit the SRS sequence can satisfy:

[0280]

[0281] in, The value can be a set Any one of the following values; or, base station 1 re-instructs UE1 to use the frequency domain resources for transmitting the SRS sequence to satisfy:

[0282]

[0283] In equation (9) The range of values ​​and the above The range of values ​​is the same; or, base station 1 re-instructs UE1 to use frequency domain resources that satisfy the above equation (3) to send the SRS sequence, and, The value of is different from the frequency domain resources used by the UE to send the SRS sequence before the base station re-indicates.

[0284] Based on the solution provided in the embodiments of this application, by reconfiguring the generation parameters of frequency domain resources and / or sequences that are different from those of the UE that have been interfered with by uplink reference signals sent by other UEs, it is possible to further avoid the uplink reference signals sent by the UE being continuously interfered with by uplink reference signals sent by other UEs.

[0285] For example, the frequency domain resources re-indicated by base station 1 or base station 2 can be orthogonal to the frequency domain resources used by the UE to transmit the SRS sequence before the base station re-indicated.

[0286] For example, the base station determines that the frequency domain resources used by UE1 and UE2 to transmit SRS both meet the requirements. The frequency domain resources re-indicated by base station 1 or base station 2 satisfy

[0287] For example, when base station 1 or base station 2 determines that the frequency domain resources or sequence offset used by UE1 to transmit the SRS sequence are the same as those used by UE2 to transmit the SRS sequence, both satisfying the condition... Or all of them satisfy Base station 1 can re-indicate the SRS sequence offset used by UE1 to transmit the SRS sequence, and this re-indicated offset satisfies: or Furthermore, the SRS sequence offset used by UE2 to transmit the SRS sequence, as instructed by base station 2, remains unchanged, still satisfying the following: or Alternatively, when base station 1 or base station 2 determines that the frequency domain resources or sequence offset used by UE1 to transmit the SRS sequence are the same as those used by UE2 to transmit the SRS sequence, both satisfying fixedoffset = 0 or both satisfying Base station 2 can re-indicate the SRS sequence offset used by UE2 to transmit the SRS sequence, and this re-indicated offset satisfies: or Furthermore, the SRS sequence offset used by UE1 to transmit the SRS sequence, as instructed by base station 1, remains unchanged, still satisfying: fixedoffset = 0 or

[0288] For example, such as Figure 12 and Figure 13 As shown, Figure 12 This is a schematic diagram of an SRS transmission provided in an embodiment of this application. Figure 13 This is a schematic diagram of another SRS transmission method provided in this application embodiment. Base station 1 provides services to cells including region 1 and region 2, and base station 2 provides services to cells including region 3 and region 4. Region 2 and region 3 are geographically adjacent regions (region 1, region 2, region 3, and region 4 are...). Figure 12The area represented by the diagonal line is defined as follows: at a certain moment, UE1's first geographical location is in region 2, and UE2's second geographical location is in region 3. When base station 1 or base station 2 determines that the frequency domain resources used by UE1 to transmit the SRS sequence are the same as those used by UE2 to transmit the SRS sequence, the following conditions must be met: Base station 1 can re-instruct UE1 on the frequency domain resources used to transmit SRS sequences, and the re-instructed frequency domain resources satisfy: Furthermore, the frequency domain resources used by base station 2 to instruct UE2 to transmit the SRS sequence remain unchanged, thus still satisfying the following: Alternatively, base station 2 can re-instruct UE2 on the frequency domain resources used to transmit SRS sequences, wherein the re-instructed frequency domain resources satisfy: Furthermore, the frequency domain resources used by base station 1 to instruct UE1 to transmit the SRS sequence remain unchanged, thus still satisfying the following:

[0289] In some possible implementations, the first communication device and the second communication device belong to different cells.

[0290] Based on the solution provided in the embodiments of this application, by configuring different frequency domain resources and / or sequence generation parameters for different UEs in different cells to transmit uplink reference signals, it is possible to avoid the uplink reference signals transmitted by the UE being interfered with by the uplink reference signals transmitted by other UEs in neighboring cells, which would lead to poor channel estimation quality.

[0291] It is understood that the values ​​of the parameters for the frequency domain resources or sequence offsets re-indicated by the base station are merely examples. Any of the above-mentioned parameters that satisfy the condition that when base station 1 (or base station 2) determines that the frequency domain resources (or sequence offsets) used by UE1 and UE2 to transmit SRS are the same, the sequence offset / frequency domain resources used by the base station to re-indicate the UE to transmit the SRS sequence are different from the sequence offset / frequency domain resources used by the base station when it does not re-indicate the UE to transmit the SRS sequence can be included in the embodiments of this application, and the embodiments of this application do not limit this.

[0292] It is understood that the possible implementations of the above communication method 1100 are merely examples, and any scenario of sending / receiving SRS in a communication system including at least two cells is applicable to this communication method 1100. For example, cell 1 and cell 2 are different cells (cell 1 and cell 2 may be adjacent or not). Base stations A and B provide services to cell 1 and cell 2, respectively. Base station A provides services to UE1 located in cell 1, and base station B provides services to UE2 located in cell 2. The communication system can execute the actions of base station 1 through base station A and the actions of base station 2 through base station B, implementing any of the above possible implementations of communication method 1100. Alternatively, base station A serves two or more cells, where cell 1 and cell 2 are different cells (cell 1 and cell 2 may be adjacent or not, and base station A provides services to UE1 located in cell 1 and UE2 located in cell 2). The communication system can execute the actions of base station 1 and base station 2 through base station A (e.g., information interaction between base station 1 and base station 2 is achieved through internal communication of base station A), implementing any of the above possible implementations of communication method 1100. This application embodiment does not limit this aspect.

[0293] Optionally, method 1100 also includes:

[0294] S1140, the network device determines the first channel state based on the first uplink reference signal.

[0295] The base station can determine the channel state between the UE that sent the SRS and the base station based on the acquired SRS.

[0296] The above text combines Figures 11-13 The communication method 1100 provided in the embodiments of this application has been described in detail below. Figure 14 , Figure 15 This application describes a communication device provided in an embodiment.

[0297] Figure 14 This is a schematic block diagram of a communication device provided in an embodiment of this application. Figure 14 As shown, the device 1400 can be a terminal device or a network device, or a component (e.g., a unit, module, chip, or chip system) configured in a terminal device or network device. The device 1400 may include a transceiver unit 1410 and a processing unit 1420.

[0298] The transceiver unit 1410 can be used to perform the transceiver-related operations performed by the terminal device or network device in the above method embodiments. For example, the transceiver unit 1410 can be used to send or receive configuration information, or to send or receive uplink reference signals, or to send or receive geographical location; or to send or receive indication information.

[0299] The processing unit 1420 can be used to perform processing-related operations performed by the terminal device or network device in the above method embodiments. For example, the processing unit 1420 can be used to determine the channel state according to the SRS; or, it can be used to determine the configuration information to be sent to the terminal device according to the geographical location of the terminal device; or, it can be used to determine the uplink reference signal sequence according to the configuration information.

[0300] Figure 15 This is a schematic block diagram of a communication device provided in an embodiment of this application. Figure 15 As shown, the device 1500 may include a processor 1510 and a transceiver 1530. The device 1500 may also include a memory 1520 that stores one or more programs that, when executed by the processor 1510, cause the communication method as described in any of the possible implementations above to be executed.

[0301] For example, device 1500 can be used to perform the communication method 1100 described above.

[0302] Understandable, Figure 15 In the device 1500, the processor 1510 may include one or more processors; the memory 1520 may include one or more memories; and the transceiver 1530 may include one or more transceivers. This application does not limit the scope of the embodiments.

[0303] The processor, also referred to as a processing unit or processing module, can implement certain control functions. The processor can be a general-purpose processor or a special-purpose processor, etc. For example, it includes: a central processing unit (CPU), an application processor, a modem processor, a graphics processor, an image signal processor, a digital signal processor, a video codec processor, a controller, a memory, and / or a neural network processor, etc. The CPU can be used to control the communication device, execute software programs, and / or process data. Different processors can be independent devices or integrated into one or more processors, for example, integrated on one or more application-specific integrated circuits (ASICs). It is understood that the processor in the embodiments of this application can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. A general-purpose processor can be a microprocessor or any conventional processor.

[0304] The transceiver can be referred to as a transceiver unit, transceiver module, transceiver, transceiver circuit, transceiver, input / output interface, etc. The transceiver is used to realize the transmission and reception functions of the communication device through the antenna.

[0305] Optionally, the communication device includes one or more memories for storing instructions that can be executed on the processor. The memory and processor are coupled; this coupling, in this invention, is an indirect coupling or communication connection between devices, units, or modules, and can be electrical, mechanical, or other forms, for information exchange between devices, units, or modules.

[0306] Optionally, the memory may also store data. The processor and memory may be configured separately or integrated together. The memory may be non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or it may be volatile memory, such as random-access memory (RAM). In the embodiments of this application, the processor may also be flash memory, read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), registers, hard disks, portable hard disks, CD-ROMs, or any other form of storage medium known in the art.

[0307] Optionally, the communication device may include instructions (sometimes referred to as code or program) that can be executed on the processor.

[0308] Optionally, the communication device may also include a transceiver and an antenna. The transceiver may be referred to as a transceiver unit, transceiver module, transceiver, transceiver circuit, transceiver, input / output interface, etc., and is used to realize the transmission and reception functions of the communication device through the antenna.

[0309] This application also provides a chip, which includes a processor and a communication interface. The communication interface is used to receive signals and transmit the signals to the processor. The processor processes the signals so that the communication method described in any of the possible implementations above is executed.

[0310] This application also provides a chip system, which may consist of chips or include chips and other discrete devices, and the chip system enables the communication methods described in any of the possible implementations above to be executed.

[0311] This embodiment also provides a computer storage medium storing computer instructions. When the computer instructions are executed on an electronic device, the electronic device performs the aforementioned method steps to implement the communication method in the above embodiment.

[0312] This embodiment also provides a computer program product that, when run on a computer, causes the computer to perform the aforementioned steps to implement the communication method described in the above embodiment.

[0313] In addition, embodiments of this application also provide an apparatus, which may specifically be a chip, component, or module. The apparatus may include a connected processor and a memory. The memory is used to store computer execution instructions. When the apparatus is running, the processor can execute the computer execution instructions stored in the memory to cause the chip to execute the communication methods in the above-described method embodiments.

[0314] In this embodiment, the electronic device, computer storage medium, computer program product or chip are all used to execute the corresponding method provided above. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects of the corresponding method provided above, and will not be repeated here.

[0315] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0316] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0317] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0318] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0319] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0320] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0321] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, The method includes: Determine the first geographical location of the first communication device; First configuration information is sent according to the first geographical location, wherein the first configuration information indicates the first frequency domain resources of the uplink reference signal and / or the first generation parameters of the sequence of the uplink reference signal; The first uplink reference signal is received, which is determined by the first communication device based on the first configuration information.

2. The method according to claim 1, characterized in that, The first generation parameter indicates the first sequence offset.

3. The method according to claim 1 or 2, characterized in that, The first geographical location is located in a first region, and the step of sending the first configuration information according to the first geographical location includes: The first configuration information is sent according to the first region, wherein the first configuration information indicates the set of the first frequency domain resources and / or the set of the first sequence offsets.

4. The method according to any one of claims 1-3, characterized in that, Before sending the first configuration information, the method further includes: determining the second geographical location of the second communication device; The first configuration information is sent when the first geographical location and the second geographical location satisfy any of the following: The distance between the first geographical location and the second geographical location is less than or equal to a first threshold; or, The distance between the center of the first region and the center of the second region is less than or equal to a second threshold, wherein the first geographical location is located in the first region and the second geographical location is located in the second region.

5. The method according to claim 4, characterized in that, The first threshold is configured, pre-configured, or indicated by information; and / or, The second threshold is configured, pre-configured, or indicated by information.

6. The method according to any one of claims 1-5, characterized in that, The method further includes: Receive a second uplink reference signal, the second uplink reference signal being determined by the second communication device according to second configuration information, the second configuration information indicating a second frequency domain resource of the uplink reference signal and / or a second generation parameter of the sequence of the uplink reference signal; Send third configuration information in at least one of the following situations: The first frequency domain resource is the same as the second frequency domain resource, or the first generation parameter is the same as the second generation parameter, wherein the third configuration information indicates the third frequency domain resource of the uplink reference signal and / or the third generation parameter of the sequence of the uplink reference signal; The third uplink reference signal is received, which is determined by the first communication device based on the third configuration information.

7. The method according to claim 6, characterized in that, The third generation parameter indicates the third sequence offset.

8. The method according to claim 6 or 7, characterized in that, The first frequency domain resource is different from the third frequency domain resource, and / or the first generation parameter is different from the third generation parameter.

9. The method according to any one of claims 4-8, characterized in that, The first communication device and the second communication device belong to different cells.

10. A communication method, characterized in that, The method includes: Send the first geographical location of the first communication device; Receive first configuration information, which is determined based on the first geographical location, and the first configuration information indicates a first frequency domain resource for the uplink reference signal and / or a first generation parameter for the sequence of the uplink reference signal; Send a first uplink reference signal, which is determined by the first communication device based on the first configuration information.

11. The method according to claim 10, characterized in that, The first generation parameter indicates the first sequence offset.

12. The method according to claim 10 or 11, characterized in that, The first geographical location is located in the first region, and receiving the first configuration information includes: Receive the first configuration information sent according to the first region, wherein the first configuration information indicates the set of the first frequency domain resources and / or the set of the first sequence offsets.

13. The method according to any one of claims 10-12, characterized in that, The first configuration information is received when the first geographical location and the second geographical location of the second device satisfy any of the following: The distance between the first geographical location and the second geographical location is less than or equal to a first threshold; or, The distance between the center of the first region and the center of the second region is less than or equal to a second threshold, wherein the first geographical location is located in the first region and the second geographical location is located in the second region.

14. The method according to claim 13, characterized in that, The first threshold is configured, pre-configured, or indicated by information; and / or, The second threshold is configured, pre-configured, or indicated by information.

15. The method according to claim 10, characterized in that, Receive third configuration information in at least one of the following situations: The first frequency domain resource is the same as the second frequency domain resource, or the first generation parameter is the same as the second generation parameter, wherein the third configuration information indicates the third frequency domain resource of the uplink reference signal and / or the third generation parameter of the sequence of the uplink reference signal; The method further includes: Send a third uplink reference signal, which is determined by the first communication device based on the third configuration information.

16. The method according to claim 15, characterized in that, The third generation parameter indicates the third sequence offset.

17. The method according to claim 15 or 16, characterized in that, The first frequency domain resource is different from the third frequency domain resource, and / or the first generation parameter is different from the third generation parameter.

18. The method according to any one of claims 13-17, characterized in that, The first communication device and the second communication device belong to different cells.

19. A communication device, characterized in that, It includes a transceiver unit and a processing unit for performing the method according to any one of claims 1-9, or it includes a transceiver unit for performing the method according to any one of claims 10-18.

20. The apparatus according to claim 19, characterized in that, The transceiver unit is a transceiver, and / or the processing unit is a processor.

21. A communication device, characterized in that, include: A processor for executing computer instructions stored in memory to cause the apparatus to perform: the method of any one of claims 1-9, or the method of any one of claims 10-18.

22. The apparatus according to claim 21, characterized in that, The device also includes the memory.

23. The apparatus according to claim 21 or 22, characterized in that, The device also includes a communication interface coupled to the processor. The communication interface is used for inputting and / or outputting information.

24. The apparatus according to any one of claims 21-23, characterized in that, The device is a chip.

25. A computer program product, characterized in that, When the computer program in the computer program product is executed by a communication device, it implements the method as described in any one of claims 1-9, or the method as described in any one of claims 10-18.

26. A computer-readable storage medium, characterized in that, The storage medium stores a computer program or instructions that, when executed by a communication device, implement the method as described in any one of claims 1-9, or the method as described in any one of claims 10-18.

27. A communication system, characterized in that, The communication system includes terminal equipment and network equipment; The network device is used to perform the method as described in any one of claims 1-9, and the terminal device is used to perform the method as described in any one of claims 10-18.

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