Communication method and related equipment

Abstract

The invention provides a communication method and related equipment, and relates to the technical field of communication. The method comprises the following step: the terminal reports sounding reference signal (SRS) antenna insertion loss information of the terminal to network equipment through a radio resource control layer. According to the scheme provided by the embodiment of the invention, the terminal can report the insertion loss information of the SRS antenna.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of communication technology, and in particular, to a communication method, a terminal, a network device, a communication system, a communication device, a computer readable storage medium, and a computer program product. BACKGROUND

[0002] SRS (Sounding Reference Signal) is a reference signal used for channel quality estimation in wireless communication systems such as 5G (5th Generation Mobile Communication Technology). SRS can be used to estimate the frequency domain information of the uplink channel to facilitate frequency-selective scheduling. In the case of assuming uplink and downlink channel reciprocity, SRS can also be used to estimate the downlink channel quality using channel symmetry to provide a basis for downlink beamforming. In 5G NR (new radio / new radio), SRS also participates in the beam management and antenna switching process. By receiving and analyzing SRS signals, a network device (such as a base station) can evaluate the transmission quality of different beams and select the optimal beam for data transmission. SUMMARY

[0003] Embodiments of the present disclosure provide a communication method, which includes: a terminal reporting sounding reference signal SRS antenna insertion loss information of the terminal to a network device through a radio resource control layer. In exemplary embodiments, the method can be executed by the terminal, or the method can be executed by a device (such as a chip, etc.) configured to the terminal.

[0004] Embodiments of the present disclosure provide a communication method, which includes: a network device receiving sounding reference signal SRS antenna insertion loss information of a terminal reported by the terminal through a radio resource control layer. In exemplary embodiments, the method can be executed by the network device (such as a base station), or the method can be executed by a device (such as a chip, etc.) configured to the network device.

[0005] Embodiments of the present disclosure provide a terminal, which includes: a first transceiver unit configured to report sounding reference signal SRS antenna insertion loss information of the terminal to a network device through a radio resource control layer.

[0006] Embodiments of the present disclosure provide a network device, which includes: a second transceiver unit configured to receive sounding reference signal SRS antenna insertion loss information of a terminal reported by the terminal through a radio resource control layer.

[0007] The communication system includes the terminal according to any of the embodiments of the present disclosure and the network device according to any of the embodiments of the present disclosure.

[0008] The communication apparatus can include a module corresponding to each of the methods / operations / steps / actions described in any of the embodiments of the present disclosure. The module can be a hardware circuit, a software, or a combination of hardware circuit and software. In one design, the communication apparatus includes a first transceiver configured to report, to a network device, sounding reference signal (SRS) antenna insertion loss information of the terminal via a radio resource control (RRC) layer. In another design, the communication apparatus includes a second transceiver configured to receive the SRS antenna insertion loss information of the terminal reported by the terminal via the RRC layer.

[0009] The communication apparatus includes a processor. The processor can implement the method in any of the embodiments of the present disclosure. Optionally, the communication apparatus further includes a memory, and the processor is coupled to the memory and is configured to execute a computer program in the memory to implement the method in any of the embodiments of the present disclosure. Optionally, the communication apparatus further includes a communication interface, and the processor is coupled to the communication interface. In the embodiments of the present disclosure, the communication interface can be a transceiver, a pin, a circuit, a bus, a module, or another type of communication interface, which is not limited.

[0010] In one implementation, the communication apparatus is a terminal. When the communication apparatus is a terminal, the communication interface can be a transceiver or an input / output interface.

[0011] In another implementation, the communication apparatus is a chip configured in the terminal. When the communication apparatus is a chip configured in the terminal, the communication interface can be an input / output interface.

[0012] Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0013] In one implementation, the communication apparatus is a network device. When the communication apparatus is a network device, the communication interface can be a transceiver or an input / output interface.

[0014] In another implementation, the communication apparatus is a chip configured in the network device. When the communication apparatus is a chip configured in the network device, the communication interface can be an input / output interface.

[0015] The embodiment of the present disclosure further provides a processor, comprising: an input circuit, an output circuit and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in any embodiment of the present disclosure.

[0016] In the example embodiment, the processor can be one or more chips, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a flip-flop, various logic circuits and the like. The input signal received by the input circuit can be received and input by, for example but not limited to, a receiver, the signal output by the output circuit can be output to and transmitted by, for example but not limited to, a transmitter, and the input circuit and the output circuit can be the same circuit which is used as the input circuit and the output circuit at different times. The embodiment of the present disclosure does not limit the specific implementation of the processor and various circuits.

[0017] The embodiment of the present disclosure further provides a communication system, comprising at least one communication device in the embodiment of the present disclosure.

[0018] The embodiment of the present disclosure provides a communication device, comprising: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to execute the communication method in any embodiment of the present disclosure via execution of the executable instructions.

[0019] The embodiment of the present disclosure provides a computer readable storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the communication method in any embodiment of the present disclosure.

[0020] The embodiment of the present disclosure provides a computer program product comprising a computer program, wherein the computer program is executed by a processor to implement the communication method in any embodiment of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings herein are incorporated into the specification and form a part of the specification, show embodiments consistent with the present disclosure, and together with the specification serve to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0022] Figure 1 A structural schematic diagram of a communication system in the embodiment of the present disclosure is shown.

[0023] Figure 2 A flowchart of a communication method in the embodiment of the present disclosure is shown.

[0024] Figure 3 An interaction diagram illustrating a communication method in an embodiment of the present disclosure is shown.

[0025] Figure 4 An interaction diagram illustrating another communication method in an embodiment of the present disclosure is shown.

[0026] Figure 5 An interaction diagram illustrating another communication method in an embodiment of the present disclosure is shown.

[0027] Figure 6 A flow chart illustrating another communication method in an embodiment of the present disclosure is shown.

[0028] Figure 7 A structural block diagram of a terminal in an embodiment of the present disclosure is shown.

[0029] Figure 8 A structural block diagram of a network device in an embodiment of the present disclosure is shown.

[0030] Figure 9 A structural block diagram of a communication device in an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0031] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations can be implemented in any

[0032] In this disclosure, at least one item can be described as one item or multiple items, and multiple items can be two, three, four, or more items, without limitation. " / " can indicate that the related objects are in an "or" relationship; for example, A / B can mean A or B. "And / or" can be used to describe three relationships between related objects; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone, where A and B can be singular or plural. To facilitate the description of the technical solutions of this application, terms such as "first," "second," "A," or "B" can be used to distinguish technical features with the same or similar functions. These terms do not limit the quantity or execution order. Furthermore, the terms "first," "second," "A," or "B" are not necessarily different. The words “exemplary” or “for example” are used to indicate examples, illustrations, or explanations. Any design described as “exemplary” or “for example” should not be construed as being superior or more advantageous than other design options. The use of words such as “exemplary” or “for example” is intended to present the relevant concepts in a concrete manner to facilitate understanding.

[0033] The specific implementation methods of the embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0034] like Figure 1 As shown, the communication system architecture includes a radio access network and a core network. The radio access network may include at least one radio access network device (such as...). Figure 1 The network device 20 in the middle may also include at least one terminal (such as Figure 1 Terminal 10 in the diagram. The terminal connects wirelessly to the wireless access network device, which in turn connects to the core network wirelessly or via a wired connection. The core network device and the wireless access network device can be independent physical devices, or the functions of the core network device and the logical functions of the wireless access network device can be integrated into the same physical device. Alternatively, a single physical device can integrate some of the functions of the core network device and some of the functions of the wireless access network device. Terminals can connect to each other, and wireless access network devices can connect to each other, via wired or wireless connections. Figure 1 This is just an illustration; the communication system may also include other network devices, such as wireless repeaters and wireless backhaul devices. Figure 1 Not shown in the image.

[0035] Network device 20 can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a 5G mobile communication system, a next-generation base station in a 6G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system; it can also be a module or unit that performs some of the functions of a base station, for example, it can be a central unit (CU) or a distributed unit (DU). Network device 20 can be a macro base station, a micro base station, or an indoor station, or it can be a relay node or a donor node, etc. This disclosure does not limit the specific technology or device form used in network device 20. For ease of description, a base station is used as an example of network device 20 in the following description.

[0036] Terminal 10 can also be referred to as terminal equipment, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiments disclosed herein do not limit the specific technologies or device forms used in the terminals.

[0037] The roles of base stations and terminals can be relative. For example, a helicopter or drone can be configured as a mobile base station. For terminals accessing the wireless access network via the helicopter or drone, the helicopter or drone is the base station; however, for the base station, the helicopter or drone is the terminal. That is, the base station and the helicopter or drone communicate via a wireless air interface protocol. Of course, the base station and the helicopter or drone can also communicate via an interface protocol between base stations. In this case, the helicopter or drone is also a base station relative to the base station. Therefore, both base stations and terminals can be collectively referred to as communication devices / communication equipment. Figure 1The network device 20 in the text can be referred to as a communication device / communication equipment with base station functionality. Figure 1 Terminal 10 in the text can be referred to as a communication device / communication equipment with terminal function.

[0038] In the embodiments of this disclosure, the functions of the base station can be executed by modules (such as chips) within the base station, or by a control subsystem that includes base station functions. This control subsystem, including base station functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal can be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions.

[0039] In embodiments of this disclosure, the term "wireless communication" may also be abbreviated as "communication," and the term "communication" may also be described as "data transmission," "information transmission," or "transmission."

[0040] Those skilled in the art will know that Figure 1 The number of terminals and network devices shown is merely illustrative; any number of terminals and network devices can be used as needed. This disclosure does not limit this.

[0041] Under the above system architecture, this disclosure provides a communication method that can be executed by any communication device with information processing capabilities. In some embodiments, the communication method provided in this disclosure can be executed by a terminal in the above system architecture; in other embodiments, the communication method provided in this disclosure can be implemented by a network device in the above system architecture. In still other embodiments, the communication method provided in this disclosure can be implemented by the terminal and the network device in the above system architecture through interaction.

[0042] Figure 2 A flowchart illustrating a communication method according to an embodiment of this disclosure is shown. Figure 2 As shown, the method provided in this disclosure embodiment may include the following steps.

[0043] In S210, the terminal reports its Sounding Reference Signal (SRS) antenna insertion loss (IL) information to the network device through the Radio Resource Control (RRC) layer.

[0044] RRC (Radio Control Restriction) is a protocol used in mobile communication systems such as LTE and 5G NR to control radio resources. It is primarily responsible for processes such as establishing communication sessions between terminals and base stations, updating configurations, managing mobility, and releasing resources. RRC messages are the information units exchanged in these processes, including various types such as RRC connection requests, RRC connection settings, RRC connection releases, and RRC reconfigurations. RRC reconfiguration messages, also known as RRC reconfiguration signaling, are used to update the terminal's configuration information after a connection is established between the terminal and network equipment.

[0045] In some embodiments, a terminal may report its SRS antenna insertion loss information to a network device via an RRC message. This RRC message may include, for example, one or more of the following: terminal capability query signaling, terminal capability information signaling, RRC reconfiguration signaling, terminal auxiliary information signaling, terminal information query signaling, and terminal information response signaling.

[0046] Insertion loss is a measure of power loss when a signal passes through a device or transmission medium. In wireless and wired communication systems, insertion loss is a crucial parameter that affects signal transmission quality and overall system performance. The unit of insertion loss is decibel (dB), a logarithmic unit used to express power ratios or voltage ratios.

[0047] In wireless communication systems, such as LTE and 5G NR networks, SRS (Short-Range Signal Loss) is used for critical functions such as channel quality estimation, beam management, and antenna switching. The SRS antenna insertion loss information in this disclosure embodiment can also be referred to as SRS insertion loss or SRS insertion loss. SRS insertion loss refers to the signal power loss that occurs during SRS signal transmission due to the insertion of components or devices in the transmission system. It reflects the power change of the signal before and after transmission. For example, during SRS signal transmission, the insertion of components or devices such as cables, connectors, filters, and impedance matching devices leads to signal power loss, which is the SRS insertion loss. In the context of SRS antenna round-robin transmission, insertion loss may be introduced due to factors such as antenna switching, the number of antennas, transmission bandwidth, and signal attenuation in the RF link.

[0048] The communication method provided in this disclosure offers a way to report terminal SRS antenna insertion loss information (e.g., terminal SRS insertion loss) through the RRC layer (e.g., RRC messages). The RRC layer is the main layer responsible for radio resource management in LTE and 5G networks. It is responsible for configuring and managing the radio connection between the terminal and the base station. RRC messages are used to transmit various configuration information, status reports, and measurement reports related to radio resource management, including configurations and parameters related to SRS. Accurate reporting of terminal SRS insertion loss is crucial for precise power control and link optimization by the base station. On the one hand, reporting terminal SRS insertion loss through RRC messages ensures the accuracy and reliability of the information, as the RRC layer provides necessary security and integrity protection mechanisms to prevent information from being tampered with or lost during transmission. On the other hand, RRC messages support flexible configuration and parameter adjustments. As network technology continues to develop and evolve, new functions and parameters may be introduced into the SRS. Reporting through RRC messages allows for convenient expansion and updating of SRS configurations and parameters to adapt to changes and developments in network technology. Furthermore, in LTE and 5G networks, the functions and message formats of the RRC layer adhere to strict international standards (such as 3GPP standards). Reporting SRS insertion loss using RRC messages ensures good interoperability between devices from different vendors, thereby reducing the complexity of network deployment and maintenance. Simultaneously, RRC messages meet the real-time requirements for SRS insertion loss reporting. In addition, the RRC layer is also responsible for the allocation and management of radio resources; therefore, reporting SRS insertion loss via RRC messages can be better integrated with resource allocation strategies to achieve more efficient resource utilization. This reporting method ensures efficient network operation and good terminal performance.

[0049] The solutions provided in this disclosure belong to the field of wireless communication and mainly involve uplink optimization, coverage enhancement, etc., such as 5G wireless communication coverage enhancement.

[0050] 5G networks and other technologies support beamforming, enabling directional transmission to terminals. For a base station to transmit directionally, it must first detect the terminal's location and the quality of the transmission path, allowing for more precise allocation of base station resources to each terminal. Terminals sending SRS information / signals is one way for base stations to detect terminal location and channel quality.

[0051] SRS can be used to estimate uplink channel frequency domain information for frequency-selective scheduling; it can also be used to estimate the uplink channel for downlink beamforming. SRS can employ a round-robin mechanism. SRS round-robin refers to the process where the terminal alternately transmits SRS information on different physical antennas or antenna ports. In the following text, the physical antennas or antenna ports on the terminal used to transmit SRS signals / information can be referred to as SRS antenna ports. SRS round-robin refers to which physical antenna the terminal transmits SRS information on. In SRS mode, the more antennas that can participate in transmitting SRS signals, the more accurate the channel estimation, and consequently, the higher the data rate. If transmission is only performed on a fixed antenna, information from other antennas will be lost, the antennas will not be fully utilized, and it will be difficult to achieve the highest data rate.

[0052] 5G terminals are typically equipped with multiple transceiver antennas, which can support higher levels of MIMO (multiple-in multiple-out) technology, significantly improving data transmission rate and reliability. However, to fully utilize the advantages of these multiple antennas, the base station needs accurate Channel State Information (CSI) between each antenna and the base station. SRS can be used to assist the base station in obtaining CSI. By fully utilizing the multiple antennas of the 5G terminal to report channel information in turn (i.e., SRS antenna round-robin transmission), the base station can obtain more comprehensive information and perform more accurate data transmission. The SRS round-robin mechanism allows the UE to send SRS signals through different antennas or antenna ports at different times or frequency resources. In this way, the base station can receive signals from different antennas of the UE and make more accurate channel estimations. With more comprehensive channel information, the base station can optimize its downlink transmission strategies, such as beamforming, power allocation, and modulation and coding schemes, thereby achieving higher data transmission rates and lower bit error rates. In addition, SRS round-robin transmission also helps improve the flexibility and robustness of the system. Since channel conditions may change over time and with the environment, base stations can update their channel estimation results in real time by periodically or on demand transmitting SRS, and adjust their transmission strategies accordingly to adapt to the current channel conditions.

[0053] Commercial terminals support 4Rx (Receiver) antennas, while 6Rx and 8Rx terminals are under research. 4Rx, 6Rx, and 8Rx terminals refer to terminal devices equipped with 4, 6, and 8 receiving antennas, respectively. As the number of receiving antennas increases, the number of antennas involved in SRS round-robin transmission also increases. This is because the purpose of SRS round-robin transmission is to allow the base station to acquire CSI from different antennas on the terminal for more accurate channel estimation and subsequent data transmission optimization. When the number of antennas increases, the switching trigger frequency of SRS antenna round-robin transmission also increases significantly to maintain the real-time nature and accuracy of channel information. This is because each antenna needs to be used individually or in combination to transmit SRS signals for a period of time so that the base station can collect a complete set of channel information.

[0054] High-frequency SRS antenna switching introduces resistance variations between components, especially when the current PA (Pre-Amplifier) ​​switches to a more distant antenna. These factors can lead to excessive insertion loss, resulting in a power mismatch between the antennas. In high-frequency signal transmission, transmission lines of different lengths (such as antenna connectors) exhibit varying resistance and inductance effects. When the PA switches to a more distant antenna, the increased transmission line length leads to a corresponding increase in resistance and inductance. This resistance variation can affect signal transmission quality, including signal attenuation and phase shift. During SRS antenna switching, if the transmission line is long or of poor quality, insertion loss increases significantly. This weakens the SRS signal strength received by the base station, affecting the accuracy of channel estimation and the reliability of data transmission. Because the transmission line lengths and characteristics may differ between antennas, even if the PA's output power remains constant, the actual transmitted power of different antennas may vary. This power mismatch leads to inconsistent signal strength received by the base station, affecting the accuracy of channel estimation and subsequent data transmission strategies. For example, the 6Rx SRS IL imbalance problem.

[0055] Although some terminals have SRS power compensation function, due to power margin limitations, when the insertion loss exceeds the terminal's maximum compensation capability, the imbalance of transmission power between SRS antennas will be directly reflected on the network side.

[0056] Theoretically, the transmit power P of all SRS ports (or SRS antenna ports) SRS,b,f,c (i,q s ,l) should be equal. For example, it can be calculated according to the following formula (1):

[0057]

[0058] In the above formula, `min` represents taking the minimum value. The transmit power calculation of the SRS port is based on a series of parameters and configurations, including maximum transmit power, P0 value, α value, path loss, power adjustment status, etc. CMAX,f,c (i) represents the maximum output power configured for the serving cell c and carrier frequency f in SRS transmission slot i (SRS transmission occasion, i.e., the current SRS transmission time). It is understood that the serving cell in this embodiment can correspond to a carrier, meaning that the cell and carrier can be interchanged in different scenarios. P 0_SRS,b,f,c (q s This indicates the carrier frequency f, BWP (Bandwidth Part), serving cell c, and SRS resource set q. s The P0 value configured in the system. α SRS,b,f,c (q s ) represents the carrier frequency f, BWP b, serving cell c, and SRS resource set q. s The α value configured in the settings is used to adjust the degree of path loss compensation. SRS,b,f,c (i) represents the amount of SRS bandwidth (in units of RBs, i.e., Resource Blocks) configured on SRS transmission slot i, carrier frequency f, BWP b, and serving cell c. PL b,f,c (q d This indicates the carrier frequency f, BWP b, serving cell c, and SRS resource ID q. d The path loss value is calculated using a configured reference signal (such as SSB or CSI-RS). b,f,c (i,l) represents the power adjustment value in transmission slot i under power adjustment state 1. It may be determined by the TPC (Transmit Power Control) command or the cumulative power control algorithm in DCI (Downlink Control Information).

[0059] μ represents the radio frame structure and subframe configuration. For example, 0 represents one slot per subframe, 1 represents two slots per subframe, and so on.

[0060] SRS Resource Set q sThe P0 value configured in the network is used to determine the initial power level of the SRS signal. In 5G NR networks, the P0 value is typically associated with the SRS resource set and specified in the network configuration, then sent to the UE (User Equipment) via RRC (Radio Resource Control) signaling. The path loss compensation factor α is used to adjust the degree of compensation for path loss in power control. On the network side, the α value can be configured to the UE via RRC signaling or other methods.

[0061] According to the formula above, the calculation of SRS transmission power is theoretically related to the carrier frequency (corresponding to f above), the carrier (i.e., the serving cell c above), and the SRS transmission timing, but not to the ports (or antenna ports) within the SRS resource. However, due to the insertion loss caused by antenna switching, the transmission power of each SRS port is reduced to varying degrees, resulting in a power imbalance between SRS ports.

[0062] First, the terminal may have an adaptive insertion loss compensation mechanism based on its own implementation, but the ability to perform compensation depends on the power headroom. For example, if the terminal's power level is PC2, meaning a maximum transmission power of 26dBm, and the SRS transmission power is set to 24dBm, the terminal can compensate for the insertion loss by increasing the transmission power when the insertion loss is between 0 and 2dBm. However, when the insertion loss is greater than 2dBm, since the terminal's maximum transmission power is only 26dBm, it cannot compensate for the insertion loss and will perform SRS transmission at a transmission power lower than the set value of 24dBm.

[0063] For 6Rx and 8Rx terminals, each SRS antenna is highly likely to experience the above problems. The power imbalance between SRS antennas caused by insertion loss (SRS IL imbalance) will greatly affect the channel detection results and reduce the accuracy of channel estimation. At the same time, since the base station cannot obtain the accurate transmission power of each SRS antenna, it will also affect the reasonable resource scheduling and power allocation for the terminal.

[0064] In SRS round-robin technology, when the number of antennas is large, there is a problem of excessive insertion loss, which may prevent the terminal from adaptively compensating. This disclosure focuses on the insertion loss problem of SRS antennas, proposes a method for reporting terminal SRS insertion loss at the RRC layer, and designs detailed reporting content and messages.

[0065] In an exemplary embodiment, the SRS antenna insertion loss information includes at least one of the following:

[0066] The SRS antenna insertion loss ΔT of the terminal under the current SRS transmission timing RxSRS , where ΔT RxSRS This is the slack in SRS transmission power caused by insertion loss;

[0067] The SRS antenna switching modes and carrier frequencies supported by the terminal, and the corresponding SRS antenna insertion loss ΔT. RxSRS ;

[0068] The actual SRS antenna insertion loss value of the terminal under the current SRS transmission timing;

[0069] The actual insertion loss value of the terminal on each SRS antenna port under the current SRS transmission timing.

[0070] In the embodiments disclosed herein, ΔT RxSRS This is the slack in the transmission power of the SRS antenna. The slack in the transmission power of an SRS antenna refers to an allowable slack in the transmission power setting within an SRS-dependent transceiver or antenna system. This slack can be used to adapt to different channel conditions and optimize system performance. In some embodiments, when the terminal performs SRS transmission, ΔT... RxSRS It can be used as an upper limit or upper limit value for the insertion loss at the antenna port. ΔT RxSRS The insertion loss is related to the antenna switching mode (e.g., omnidirectional switching, directional switching, etc.) and carrier frequency (or frequency layer) during SRS transmission, i.e., it is related to the current SRS resources and represents the relaxation of SRS transmission power due to insertion loss. Insertion loss can be caused by factors such as antenna switching and signal attenuation in the RF link. Therefore, ΔT RxSRS This can refer to the power reduction caused by antenna switching (SRS) in SRS antennas. While it includes, but is not limited to, insertion loss, the primary impact of SRS antenna switching is insertion loss, so it can be used to indicate the upper limit of insertion loss. Therefore, the terminal can report ΔT. RxSRS This is used to indicate the upper limit of SRS insertion loss. However, this disclosure is not limited to this. In other embodiments, new parameters can be defined to indicate the upper limit of SRS insertion loss. In this case, the terminal can report the upper limit to the base station.

[0071] In practical applications, ΔT RxSRS The value can be configured by the network side to the terminal via RRC signaling. After receiving this value, the terminal will adjust the SRS transmit power according to the current SRS resource configuration and antenna switching mode to ensure that the SRS signal can still meet the network requirements after taking insertion loss into account.

[0072] In an exemplary embodiment, the insertion loss ΔT of the SRS antennaRxSRS The granularity is the SRS antenna switching mode.

[0073] In this embodiment of the disclosure, the base station and the terminal know the carrier frequency used by the terminal during the current SRS transmission, but the base station does not know the antenna switching mode (also referred to as the current antenna switching mode) used by the terminal during the current SRS transmission. And ΔT RxSRS The value of ΔT has a one-to-one correspondence with the antenna switching mode and the carrier frequency. That is, once the antenna switching mode and carrier frequency are known, the corresponding antenna switching mode and carrier frequency can be uniquely determined. Therefore, as long as the base station knows the antenna switching mode used by the terminal during the current SRS transmission, it can determine ΔT based on the known carrier frequency used by the terminal. RxSRS The value of ΔT. Therefore, ΔT RxSRS The granularity is the SRS antenna switching mode.

[0074] In other embodiments, the terminal may report the antenna switching mode it uses during the current SRS transmission. Upon receiving the report, the base station determines ΔT based on the antenna switching mode. RxSRS The value of ΔT. In some other embodiments, the terminal may report the antenna switching mode it uses during the current SRS transmission and the corresponding ΔT. RxSRS The value of .

[0075] In an exemplary embodiment, the SRS antenna insertion loss ΔT of the terminal during the current SRS transmission timing is... RxSRS This corresponds to the current SRS antenna switching mode and carrier frequency of the terminal during the current SRS transmission.

[0076] In an exemplary embodiment, the SRS antenna insertion loss ΔT of the terminal during the current SRS transmission timing is... RxSRS It is one of 3.0, 4.0, 4.5, 5.5, 5.8, 6.0, 7.0, 7.3, 7.5, 8.5, 8.8, 9.0, or 10.3 dB.

[0077] In an exemplary embodiment, the SRS switching mode supported by the terminal and the SRS antenna insertion loss ΔT corresponding to the carrier frequency are... RxSRS It is one or more of the following: 3.0, 4.0, 4.5, 5.5, 5.8, 6.0, 7.0, 7.3, 7.5, 8.5, 8.8, 9.0, and 10.3 dB.

[0078] In an exemplary embodiment, the actual SRS antenna insertion loss value of the terminal at the current SRS transmission time is a value between [0, 10.3] dB.

[0079] In an exemplary embodiment, the actual insertion loss value at each SRS antenna port is a value between [0, 10.3] dB.

[0080] In this embodiment, the number of SRS antenna ports can be determined by the upper-layer parameter "nrofSRS-Ports", with a selectable range of {1, 2, 4}. This means that the UE can simultaneously transmit SRS signals on one or more SRS antenna ports. Therefore, during terminal reporting, in some embodiments, the actual insertion loss value of each of these simultaneously transmitted SRS antenna ports can be sent to the base station. For example, if the number of SRS antenna ports is 4, then 4 actual insertion loss values ​​are reported, and each actual insertion loss value is a value between [0, 10.3] dB. In other embodiments, the terminal can sum the actual insertion loss values ​​of all SRS antenna ports simultaneously transmitted to obtain a total actual insertion loss value as the actual SRS antenna insertion loss value of the terminal under the current SRS transmission timing, and report it to the base station.

[0081] In some embodiments, the SRS antenna insertion loss ΔT of the terminal during the current SRS transmission timing is... RxSRS This refers to the ΔT on all SRS antenna ports simultaneously transmitting SRS at the current transmission time. RxSRS The sum of the values.

[0082] In this embodiment of the disclosure, considering implementation complexity and reporting accuracy, at least one of the following four reporting contents is designed:

[0083] 1. Report ΔT under the current SRS transmission timing. RxSRS (corresponding to the current SRS switching mode and carrier frequency), ΔT RxSRS The granularity is the antenna switching mode.

[0084] In this case, it is not necessary to specify which SRS antenna port. For example, it is possible to use four antennas to transmit SRS simultaneously, where ΔT... RxSRS This refers to the ΔT of these four antennas. RxSRS The sum is reported to the base station, which can then use the reported ΔT... RxSRS IL compensation is performed, but the specific compensation algorithm is not limited in this disclosure. The ΔT values ​​on these four antennas... RxSRS The values ​​may be different.

[0085] In different antenna switching modes, the insertion loss will vary due to differences in signal path and power distribution. Therefore, ΔT RxSRSThe value of ΔT needs to be adjusted based on the specific antenna switching mode. For example, in omnidirectional switching mode, the terminal may need to transmit SRS between all antennas in turn to cover a wider area. In directional switching mode, the terminal may only switch between specific antennas to optimize transmission quality in a specific direction. These two modes have different effects on insertion loss, therefore ΔT RxSRS The value will also vary. The frequency and order of switching will also affect the insertion loss.

[0086] In practical applications, the network side first configures ΔT RxSRS The value is configured for the terminal. Upon receiving it, the terminal adjusts the SRS transmission power based on the current SRS resource configuration and antenna switching mode. The terminal also selects an appropriate antenna switching mode for SRS transmission based on network instructions and its own capabilities. For example, in some cases, the terminal may only support switching between specific antennas, or may need to switch according to a specific order and frequency. The terminal reports ΔT to the base station. RxSRS It can be ΔT configured from the network side. RxSRS The option selected can also be determined by the terminal itself based on the antenna switching mode and carrier frequency under the current SRS transmission timing.

[0087] 2. Report all SRS switching modes and carrier frequencies supported by the terminal, and their corresponding ΔT values. RxSRS For example, what can be reported is an SRS switching mode and the corresponding ΔT of the carrier frequency. RxSRS A two-dimensional table, ΔT RxSRS The granularity is the antenna switching mode.

[0088] In this embodiment of the disclosure, the terminal reports all SRS switching modes and carrier frequencies supported by the terminal, along with their corresponding ΔT values. RxSRS And the ΔT corresponding to the configured SRS switching mode and carrier frequency received by the terminal from the base station. RxSRS They may be the same, they may be different, or they may be partially the same.

[0089] For example, the terminal first reports its capabilities to the base station. If it reports that it supports SRS antenna switching modes 1, 2, 3, and 4, the base station, during configuration, may only configure the UE with ΔT for SRS antenna switching modes 1 and 3, depending on its own situation or network conditions. RxSRS Here, the UE reports ΔT for all antenna switching modes it supports (e.g., SRS antenna switching modes 1, 2, 3, and 4). RxSRS The base station is not configured with ΔT for the second and fourth antenna switching modes. RxSRS The terminal can obtain the value by looking up a table.

[0090] Below is a simplified example demonstrating how to report the SRS antenna switching modes supported by the terminal and the corresponding ΔT for the carrier frequency in the form of a two-dimensional table. RxSRS Please note that this is just an example; the actual implementation may vary depending on the specific network standards and protocols.

[0091] Table 1

[0092]

[0093]

[0094] In this two-dimensional table: rows represent different SRS antenna switching modes, such as mode A, mode B, ..., mode M. These modes define how the terminal switches between different antennas to transmit SRS. Columns represent different carrier frequencies, such as carrier 1, carrier 2, ..., carrier N. A carrier frequency refers to the frequency position of a signal in the radio spectrum; different carrier frequencies may correspond to different frequency bands and transmission characteristics. The values ​​in the cells (e.g., ΔT) RxSRS_A1 This indicates the ΔT supported by the terminal under a specific SRS antenna switching mode (e.g., mode A) and a specific carrier frequency (e.g., carrier frequency 1). RxSRS value.

[0095] Actual implementations are likely to be more complex than this simplified example, taking into account factors such as the number of antenna ports, the efficiency of the power amplifier, and the nonlinear characteristics of the RF link. Furthermore, different terminals may support different SRS switching modes and carrier frequency ranges, resulting in different reported two-dimensional tables.

[0096] 3. Report the actual insertion loss value (i.e., the actual SRS antenna insertion loss value) of the terminal during SRS transmission at the current SRS transmission time, instead of ΔT. RxSRS The terminal needs to calculate this itself. Each terminal manufacturer can define its own calculation method; this disclosure does not impose any restrictions on this.

[0097] 4. The terminal also needs to calculate the actual insertion loss value (i.e., actual insertion loss value) on each SRS antenna port under the current SRS transmission timing.

[0098] For example, in a 2T4R SRS switching mode with two SRS transmit ports, the SRS insertion loss values ​​for these two ports are reported. Here, R is short for round, indicating the number of rounds the SRS antennas transmit. In reality, because downlink data is much more abundant than uplink data, the number of receive antennas is much greater than the number of transmit antennas. To predict the channel characteristics of the receive antennas using the uplink signals transmitted by the transmit antennas, switching is used to simulate different rounds. For example, if there are 8 receive antennas, with 2 SRS transmit antennas simultaneously at each time, then 4 rounds are needed; if there are 10 receive antennas, then 5 rounds are needed. The insertion loss occurs during each switchover. For example, 4 rounds involve 3 antenna switches. For instance, switch 1 switches sequentially to antennas 1, 3, 5, and 7, and switch 2 switches sequentially to antennas 2, 4, 6, and 8. The actual insertion loss value for each SRS antenna port can be calculated after these 3 switches, or it can be calculated at each switch and then summed in 3 steps.

[0099] For Schemes 1 and 2 regarding the reported content, ΔT can be specified. RxSRS There are 13 possible values: 3.0, 4.0, 4.5, 5.5, 5.8, 6.0, 7.0, 7.3, 7.5, 8.5, 8.8, 9.0, and 10.3 dB. Option 1 reports one of these 13 possible values. Option 2 reports the SRS antenna switching capability (antenna switching mode) supported by the terminal – the supported frequency bands (i.e., carrier frequencies) and the corresponding two-dimensional table, including one or more of the 13 possible values.

[0100] In some embodiments, the base station first sends RRC configuration signaling to the terminal, which carries the aforementioned 13 values; then, the terminal selects one of these 13 values ​​based on the SRS antenna switching mode and carrier frequency f actually selected during the current SRS transmission, and reports the selected value to the base station. The ΔTRxSRS configured in the RRC configuration signaling can also be a two-dimensional table.

[0101] In other embodiments, these 13 values ​​can be labeled, for example, the indices 0-12 can represent one of these 13 values ​​respectively. In this way, the corresponding index number can be reported when reporting, thereby saving the resources occupied by the terminal when reporting.

[0102] For scheme 3, a value within the range of [0, 10.3] dB is reported. In some embodiments, an integer can be used to report the actual SRS antenna insertion loss value or actual insertion loss value. For example, when the reported value is i, it indicates that the actual SRS antenna insertion loss value or actual insertion loss value of the terminal under the current SRS transmission timing is between (i-1, i] dB, where i is an integer greater than or equal to 1 and less than or equal to 11. Considering that when actually reporting, if the reported value is 1.5, 2.6 or similar with a decimal point, it would be necessary to reserve, for example, an 8-bit field for reporting. Using integer reporting can reduce the uplink resources occupied. And it can already meet the accuracy requirements of the actual SRS antenna insertion loss value or actual insertion loss value. However, this disclosure is not limited to this. In other embodiments, the terminal can also directly report the actual SRS antenna insertion loss value or actual insertion loss value with a decimal point to achieve a more accurate reporting effect.

[0103] For scheme 4, SRS supports simultaneous transmission of SRS from 1 / 2 / 4 antenna ports. Therefore, the terminal reports 1 / 2 / 4 actual insertion loss values, corresponding to each SRS antenna port currently in use, with each value ranging from [0, 10.3] dB.

[0104] In an exemplary embodiment, the method provided in this disclosure further includes: receiving a terminal capability query signaling sent by the network device. The terminal reporting its Sounding Reference Signal (SRS) insertion loss information to the network device includes: in response to the terminal capability query signaling, the terminal sending a terminal capability information signaling to the network device, the terminal capability information signaling including the SRS antenna insertion loss information.

[0105] In an exemplary embodiment, the terminal reports its Sounding Reference Signal (SRS) insertion loss information to the network device, including: after receiving a Radio Resource Control (RRC) reconfiguration signaling sent by the network device, the terminal automatically triggers and sends a Terminal Assistance Information (TAI) signaling to the network device, wherein the TAI includes the SRS antenna insertion loss information.

[0106] In an exemplary embodiment, the method provided in this disclosure further includes: receiving a terminal information query signaling sent by the network device. The terminal reporting its Sounding Reference Signal (SRS) insertion loss information to the network device includes: responding to the terminal information query signaling by sending a terminal information response signaling to the network device, the terminal information response signaling including the SRS antenna insertion loss information.

[0107] In an exemplary embodiment, the terminal capability information signaling, terminal assistance information signaling, or terminal information response signaling includes a first field, which is used to indicate the SRS antenna insertion loss ΔT of the terminal under the current SRS transmission timing. RxSRS .

[0108] In an exemplary embodiment, the first field includes the SRS-delta-TRxSRS-r19 field. It is understood that it is assumed here that the first field included in the terminal capability information signaling, terminal auxiliary information signaling, or terminal information response signaling is represented by the SRS-delta-TRxSRS-r19 field, but this is not actually limited to this. For example, the terminal capability information signaling, terminal auxiliary information signaling, or terminal information response signaling may use different fields to represent the first field, and this disclosure does not limit the naming of the first field, as long as it can be used to indicate the SRS antenna insertion loss ΔT of the terminal under the current SRS transmission timing. RxSRS That's fine. The second to fourth fields below are similar.

[0109] In an exemplary embodiment, the first field is an enumeration type.

[0110] In an exemplary embodiment, the terminal capability information signaling, terminal auxiliary information signaling, or terminal information response signaling includes a second field, which is used to indicate the SRS antenna switching mode supported by the terminal and the SRS antenna insertion loss ΔTRxSRS corresponding to the carrier frequency.

[0111] In an exemplary embodiment, the terminal capability information signaling, terminal auxiliary information signaling, or terminal information response signaling includes one or more second fields, the number of which is determined based on the SRS antenna switching mode and the number of carrier frequencies supported by the terminal.

[0112] In an exemplary embodiment, the second field includes the SRS-delta-TRxSRS-perSRSmode-perBand-r19 field;

[0113] The SRS-delta-TRxSRS-perSRSmode-perBand-r19 field is used to indicate the SRS antenna switching modes supported by the terminal and the ΔTRxSRS of the SRS antenna insertion loss corresponding to each carrier frequency.

[0114] In an exemplary embodiment, the second field is an enumeration type.

[0115] In an exemplary embodiment, the terminal capability information signaling, terminal auxiliary information signaling, or terminal information response signaling includes a third field, which is used to indicate the actual SRS antenna insertion loss value of the terminal under the current SRS transmission timing.

[0116] In an exemplary embodiment, the third field includes the SRS-actual-IL-r19 field.

[0117] In an exemplary embodiment, the third field is an enumeration type or an integer.

[0118] In an exemplary embodiment, when the value of the third field is i, it indicates that the actual SRS antenna insertion loss value of the terminal under the current SRS transmission timing is between (i-1, i) dB, where i is an integer greater than or equal to 1 and less than or equal to 11.

[0119] In an exemplary embodiment, the terminal capability information signaling, terminal auxiliary information signaling, or terminal information response signaling includes a fourth field, which is used to indicate the actual insertion loss value of the terminal on each SRS antenna port under the current SRS transmission timing.

[0120] In an exemplary embodiment, the fourth field includes the SRS-actual-IL-perport-r19 field.

[0121] In an exemplary embodiment, the number of the fourth field is the same as the number of SRS antenna ports that the terminal supports simultaneously transmitting SRS during the current SRS transmission.

[0122] Each fourth field indicates the actual insertion loss value of the terminal on the corresponding SRS antenna port it supports during the current SRS transmission.

[0123] In an exemplary embodiment, the fourth field is an enumeration type or an integer.

[0124] In an exemplary embodiment, when the value of the fourth field is i, it indicates that the actual insertion loss value of the terminal on the corresponding SRS antenna port is between (i-1, i) dB under the current SRS transmission timing, where i is an integer greater than or equal to 1 and less than or equal to 11.

[0125] This disclosure presents a method for reporting SRS insertion loss in RRC-connected mode. After the base station issues an RRC reconfiguration signaling (i.e., the UE triggers the process automatically after the base station issues the RRC reconfiguration signaling) or UE information acquisition signaling (e.g., including terminal capability query signaling and / or terminal information query signaling), the terminal reports its SRS insertion loss status to the network side (e.g., the base station) through UE information (i.e., terminal information response signaling), UE auxiliary information (i.e., terminal auxiliary information signaling), or UE capability (i.e., terminal capability information signaling) reporting processes. This disclosure defines the specific content to be reported and the required RRC signaling IE (Information Element) carrier for reporting, and designs the reporting sequence.

[0126] In an exemplary embodiment, the terminal can report its own relevant information to the network side through the RRC layer in at least one of the following three ways or procedures, all of which can report SRS insertion loss information (i.e., SRS antenna insertion loss information):

[0127] 1. The UE capability transfer process is triggered by the UE capability Enquiry signaling issued by the base station. Subsequently, the terminal reports its own capability information (UE capability information) to the base station, i.e., the terminal capability information signaling / message.

[0128] 2. The UE Assistance Information reporting process is initiated by the terminal itself after the base station sends an RRC reconfiguration to the terminal (as specified in the existing standard) and sends a UE Assistance Information signaling / message to the base station.

[0129] 3. The UE Information reporting process is triggered by the base station issuing a UE information inquiry signaling (UEinformationEnquiry). Subsequently, the terminal reports a signaling (UEinformationResponse) containing its own information to the base station, which is the UE information response signaling / message.

[0130] In an exemplary embodiment, the insertion loss information when the terminal sends SRS via the RRC layer, as provided in this disclosure embodiment, can be reported through any one of the three processes described above (UE capability transfer, UE assistance Information, UE Information Response); at the same time, the specific content reported can be any one of the four types of SRS insertion loss related information.

[0131] Figure 3 This diagram illustrates an interaction diagram of a communication method according to an embodiment of the present disclosure. For example... Figure 3 As shown, the communication method provided in this embodiment may include the following steps.

[0132] In S31, the base station sends a terminal capability query signaling to the terminal.

[0133] In S32, the terminal sends terminal capability information signaling to the base station, which carries SRS antenna insertion loss information.

[0134] exist Figure 3 In this embodiment, the UE is in RRC connected state.

[0135] exist Figure 3 In this embodiment, the terminal capability reporting in process 1 above is illustrated as follows:

[0136] S31. The base station issues a UE capability query request signaling (UEcapabilityEnquiry), which is a terminal capability query signaling.

[0137] S32. After receiving the above request, the terminal reports the terminal capability information signaling (UEcapability information), which includes the terminal SRS antenna insertion loss information.

[0138] A. If Scheme 1 is adopted, a new field SRS-delta-TRxSRS-r19 is added to the UEcapabilityinformation message. This field is of enumerated type (ENUMERATED) and includes any one of 13 values: 3.0, 4.0, 4.5, 5.5, 5.8, 6.0, 7.0, 7.3, 7.5, 8.5, 8.8, 9.0, and 10.3. The UE sends this information to the base station, reporting the terminal's upper limit capability for SRS antenna insertion loss, for example, in terms of ΔT... RxSRS Indicates the upper limit capability. It is represented as follows, with OPTIONAL indicating optional:

[0139] SRS-delta-TRxSRS-r19 ENUMERATED{3.0,4.0,4.5,5.5,5.8,6.0,7.0,7.3,7.5,8.5,8.8,9.0,10.3} OPTIONAL

[0140] B. If Scheme 2 is adopted, a new field SRS-delta-TRxSRS-perSRSmode-perBand-r19 is added to the UE capability information message. Here, "SRSmode" indicates the SRS antenna switching mode, "Band" indicates the frequency band, and there are one or more SRS-delta-TRxSRS-perSRSmode-perBand-r19 fields, determined by the number of SRS antenna switching modes and frequency bands supported by the terminal. Alternatively, it can be an enumeration type, sent by the UE to the base station to report the terminal's upper limit capability for SRS antenna insertion loss, for example, in terms of ΔT... RxSRS Indicates the upper limit of capability.

[0141] C. If Scheme 3 is adopted, an SRS-actual-IL-r19 field is added to the UEcapabilityinformation message. It is an enumeration type or an integer, which can include any one of 11 values. The first value indicates that the SRS IL (i.e., the actual SRS antenna insertion loss value) ∈ (0,1], the second value indicates that the SRS IL ∈ (1,2], and so on. The UE sends the actual value of the terminal's SRS antenna insertion loss to the base station.

[0142] SRS-actual-IL-r19 ENUMERATED{1,2,3,4,5,6,7,8,9,10,11}or INTEGER{1..11} OPTIONAL

[0143] D. If Scheme 4 is adopted, an SRS-actual-IL-perport-r19 field is added to the UE capability information message. The "port" indicates the SRS antenna port. Depending on the number of SRS antenna ports, there may be 1 / 2 / 4 fields of SRS-actual-IL-perport-r19. Similar to C, it is also an enumeration type, indicating any one of 11 cases. The UE sends the information to the base station to report the actual value of the insertion loss on each port of the terminal's SRS antenna.

[0144] Figure 4 This diagram illustrates an interaction diagram of yet another communication method according to an embodiment of the present disclosure. For example... Figure 4 As shown, the communication method provided in this embodiment may include the following steps.

[0145] In S41, the base station sends an RRC reconfiguration signaling message to the terminal.

[0146] In S42, the terminal sends terminal assistance information signaling to the base station, which carries SRS antenna insertion loss information.

[0147] Figure 4 In this embodiment, the terminal is in RRC connected state.

[0148] The following example illustrates the process 2 of the technical solution: terminal auxiliary information reporting.

[0149] S41. The base station sends an RRC reconfiguration signaling message to the terminal, and the terminal completes the RRC reconfiguration (RRRC econfigure).

[0150] S42. The terminal reports UE Assistance Information based on certain triggering conditions (such as a change in antenna switching mode, a change in carrier frequency, or a different SRS transmission timing).

[0151] A. If Scheme 1 is adopted, a new field SRS-delta-TRxSRS-r19 is added to the UEAssistanceInformation message. This field is an enumeration type and includes any one of 13 values: 3.0, 4.0, 4.5, 5.5, 5.8, 6.0, 7.0, 7.3, 7.5, 8.5, 8.8, 9.0, and 10.3dB. The UE sends this information to the base station to report the terminal's upper limit capability for SRS antenna insertion loss.

[0152] SRS-delta-TRxSRS-r19 ENUMERATED{3.0,4.0,4.5,5.5,5.8,6.0,7.0,7.3,7.5,8.5,8.8,9.0,10.3} OPTIONAL

[0153] B. If Scheme 2 is adopted, the field SRS-delta-TRxSRS-perSRSmode-perBand-r19 is added to the UEAssistanceInformation message. "SRSmode" indicates the SRS antenna switching mode, "Band" indicates the frequency band, and there are one or more RS-delta-TRxSRS-perSRSmode-perBand-r19 fields, which are determined by the number of SRS switching modes and frequency bands supported by the terminal. It is also an enumeration type, which is sent by the UE to the base station to report the upper limit of the terminal's SRS antenna insertion loss capability.

[0154] C. If Scheme 3 is adopted, an SRS-actual-IL-r19 field is added to the UEAssistanceInformation message. It is an enumeration type or an integer, including any one of 11 values. The first value represents SRS IL∈(0,1], the second value represents SRS IL∈(1,2], and so on. The UE sends the message to the base station to report the actual value of the terminal's SRS antenna insertion loss.

[0155] SRS-actual-IL-r19 ENUMERATED{1,2,3,4,5,6,7,8,9,10,11}or INTEGER{1..11} OPTIONAL

[0156] D. If Scheme 4 is adopted, the SRS-actual-IL-perport-r19 field is added to the UEAssistanceInformation message. The "port" indicates the SRS antenna port. Depending on the number of SRS antenna ports, there may be 1 / 2 / 4 fields of SRS-actual-IL-perport-r19. Similar to C, it is also an enumeration type, indicating any one of the 11 cases. The UE sends the information to the base station to report the actual value of the insertion loss on each port of the terminal's SRS antenna.

[0157] Figure 5 This diagram illustrates an interaction diagram of another communication method according to an embodiment of this disclosure. For example... Figure 5 As shown, the communication method provided in this embodiment may include the following steps.

[0158] In S51, the base station sends a terminal information query signaling to the terminal.

[0159] In S52, the terminal sends a terminal information response signaling to the base station, which carries SRS antenna insertion loss information.

[0160] Figure 5 In the UE information reporting in this embodiment, the UE is not limited to the RRC connected state.

[0161] For example, regarding the terminal information reporting in process 3 of the technical solution:

[0162] S51. The base station sends a UE information query request signaling (UEinformationEnquiry);

[0163] S52. After receiving the request, the terminal reports the UE information response signaling, which includes the terminal's SRS antenna insertion loss information.

[0164] A. If Scheme 1 is adopted, a new field SRS-de lta-TRxSRS-r19 is added to the UEinformationResponse message. It is an enumeration type and includes any one of 13 values: 3.0, 4.0, 4.5, 5.5, 5.8, 6.0, 7.0, 7.3, 7.5, 8.5, 8.8, 9.0, and 10.3dB. The UE sends this information to the base station to report the upper limit of the terminal's SRS antenna insertion loss capability.

[0165] SRS-delta-TRxSRS-r19 ENUMERATED{3.0,4.0,4.5,5.5,5.8,6.0,7.0,7.3,7.5,8.5,8.8,9.0,10.3} OPTIONAL

[0166] B. If Scheme 2 is adopted, the field SRS-delta-TRxSRS-perSRSmode-perBand-r19 is added to the UEinformationResponse message. "SRSmode" indicates the SRS antenna switching mode, "Band" indicates the frequency band, and there are one or more RS-delta-TRxSRS-perSRSmode-perBand-r19 fields, which are determined by the number of SRS antenna switching modes and frequency bands supported by the terminal. It is also an enumeration type, which is sent by the UE to the base station to report the upper limit capability of the terminal's SRS antenna insertion loss.

[0167] C. If Scheme 3 is adopted, an SRS-actual-IL-r19 field is added to the UEinformationResponse message. It is an enumeration type or an integer, including any one of 11 values. The first value represents SRS IL∈(0,1], the second value represents SRS IL∈(1,2], and so on. The UE sends the actual value of the terminal's SRS antenna insertion loss to the base station.

[0168] SRS-actual-IL-r19 ENUMERATED{1,2,3,4,5,6,7,8,9,10,11}or INTEGER{1..11}OPTIONAL

[0169] D. If Scheme 4 is adopted, the SRS-actual-IL-perport-r19 field is added to the UEinformationResponse message. The "port" indicates the SRS antenna port. Depending on the number of SRS antenna ports, there may be 1 / 2 / 4 fields of SRS-actual-IL-perport-r19. Similar to C, it is also an enumeration type, indicating any one of the 11 cases. The UE sends the information to the base station to report the actual value of the insertion loss on each port of the terminal's SRS antenna.

[0170] Figure 6 A flowchart illustrating another communication method according to an embodiment of this disclosure is shown. For example... Figure 6 As shown, the method provided in this disclosure embodiment may include the following steps.

[0171] In S610, the network device receives the antenna insertion loss information of the probe reference signal (SRS) reported by the terminal through the radio resource control layer.

[0172] Figure 6 Other aspects of the embodiments can be found in the above embodiments, and will not be repeated here.

[0173] The method provided in this disclosure includes the specific content of SRS insertion loss reporting, the specific method of SRS reporting via RRC message, and an example of an embodiment of SRS insertion loss reporting via RRC.

[0174] The power imbalance among SRS antennas caused by insertion loss significantly affects channel detection results and reduces channel estimation accuracy. Simultaneously, the inability of the base station to obtain the accurate transmission power of each SRS antenna also hinders reasonable resource scheduling and power allocation for the terminal. The solution provided in this disclosure can report the SRS insertion loss of the terminal, representing a technological breakthrough in solving this problem. The solution provided in this disclosure utilizes RRC messages to dynamically or statically report the SRS insertion loss of the terminal. In the uplink coverage enhancement domain, better SRS power control is beneficial for ensuring uplink coverage, and can guarantee the accuracy of SRS calculation when the UE is located at a remote point and has a large path loss. In the high-power CA (Carrier Aggregation) domain, the solution provided in this disclosure can ensure the deployment of terminals with multiple receiving antennas (e.g., 6Rx), thereby increasing receive diversity, increasing stream count, and ensuring reliability and effectiveness. The solution provided in this disclosure can guarantee the uplink transmission performance and throughput of high-power UEs, improving network coverage and user experience.

[0175] Figure 7 A structural block diagram of a terminal according to an embodiment of this disclosure is shown. Figure 7As shown, the terminal 700 provided in this embodiment includes a first transceiver unit 710.

[0176] The first transceiver unit 710 is used to report the probe reference signal (SRS) antenna insertion loss information of the terminal to the network device through the radio resource control layer.

[0177] Figure 7 Other aspects of the embodiments can be found in the above embodiments, and will not be repeated here.

[0178] Figure 8 A structural block diagram of a network device according to an embodiment of this disclosure is shown. Figure 8 As shown, the network device 800 provided in this embodiment includes a second transceiver unit 810.

[0179] The second transceiver unit 810 is used to receive the probe reference signal (SRS) antenna insertion loss information of the terminal reported by the terminal through the radio resource control layer.

[0180] Figure 8 Other aspects of the embodiments can be found in the above embodiments, and will not be repeated here.

[0181] This disclosure also provides a communication system, including: a terminal provided in any embodiment of this disclosure and a network device provided in any embodiment of this disclosure.

[0182] This disclosure also provides a communication device, including: a processor; and a memory for storing executable instructions of the processor. The processor is configured to execute the methods described in any embodiment of this disclosure by executing the executable instructions.

[0183] This disclosure also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the methods described in any embodiment of this disclosure.

[0184] This disclosure also provides a computer program product, which includes a computer program that, when run, executes the methods described in any embodiment of this disclosure.

[0185] It should be noted that the above-mentioned modules / units, as part of a device, can be executed in a computer system such as a set of computer-executable instructions.

[0186] Those skilled in the art will understand that various aspects of this disclosure can be implemented as a system, method, or program product. Therefore, various aspects of this disclosure can be specifically implemented in the following forms: a completely hardware implementation, a completely software implementation (including firmware, microcode, etc.), or a combination of hardware and software aspects, collectively referred to herein as a "circuit," "module," or "system."

[0187] Figure 9 A structural block diagram of a communication device according to an embodiment of this disclosure is shown. Referring below... Figure 9 The present disclosure describes a communication device 900 according to such an embodiment, which is, for example, a terminal and / or a network device. Figure 9 The communication device 900 shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments disclosed herein.

[0188] like Figure 9 As shown, the communication device 900 is presented in the form of a general-purpose computing device. The components of the communication device 900 may include, but are not limited to: at least one processing unit 910, at least one storage unit 920, and a bus 930 connecting different system components (including the storage unit 920 and the processing unit 910).

[0189] The storage unit 920 stores program code that can be executed by the processing unit 910, causing the processing unit 910 to perform the steps described in the "Exemplary Methods" section above according to various exemplary embodiments of this disclosure.

[0190] Storage unit 920 may include readable media in the form of volatile storage units, such as random access memory (RAM) 9201 and / or cache memory 9202, and may further include read-only memory (ROM) 9203.

[0191] Storage unit 920 may also include a program / utility 9204 having a set (at least one) program module 9205, such program module 9205 including but not limited to: operating system, one or more application programs, other program modules and program data, each or some combination of these examples may include an implementation of a network environment.

[0192] Bus 930 can represent one or more of several types of bus structures, including a memory cell bus or memory cell controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0193] The communication device 900 can also communicate with one or more external devices 940 (e.g., keyboards, pointing devices, Bluetooth devices, etc.), one or more devices that enable users to interact with the communication device 900, and / or any device that enables the communication device 900 to communicate with one or more other computing devices (e.g., routers, modems, etc.). This communication can be performed via input / output (I / O) interface 950. Furthermore, the communication device 900 can also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via network adapter 960. As shown, network adapter 960 communicates with other modules of the communication device 900 via bus 930. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with the communication device 900, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0194] In particular, according to embodiments of this disclosure, the process described above with reference to the flowchart can be implemented as a computer program product, which includes a computer program that, when executed by a processor, implements the above-described communication method.

[0195] In exemplary embodiments of this disclosure, a computer-readable storage medium is also provided, which may be a readable signal medium or a readable storage medium. The computer-readable storage medium stores a program product capable of implementing the methods described above. In some possible implementations, various aspects of this disclosure may also be implemented as a program product including program code that, when run on a terminal / network device, causes the terminal / network device to perform the steps described in the "Exemplary Methods" section of this specification according to various exemplary embodiments of this disclosure.

[0196] In this disclosure, a computer-readable storage medium may include a data signal propagated in baseband or as part of a carrier wave, carrying readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium, capable of transmitting, propagating, or transmitting a program for use by or in connection with an instruction execution system, apparatus, or device.

[0197] Optionally, the program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination thereof.

[0198] It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to embodiments of this disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0199] Furthermore, although the steps of the method in this disclosure are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additional or alternative steps may be omitted, multiple steps may be combined into one step, and / or a step may be broken down into multiple steps.

[0200] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

Claims

1. A communication method characterized by comprising: Comprising: The terminal reports the sounding reference signal SRS antenna insertion loss information of the terminal to the network device through a radio resource control layer.

2. The method of claim 1, wherein, The SRS antenna insertion loss information comprises at least one of: ΔT is the SRS antenna insertion loss of the terminal at the current SRS transmission occasion RxSRS where ΔT RxSRS is the relaxation amount of SRS transmission power caused by insertion loss; The terminal supports the SRS antenna switching mode and the ΔT of the SRS antenna insertion loss corresponding to the carrier frequency RxSRS ; The actual SRS antenna insertion loss value of the terminal at the current SRS transmission occasion; The actual insertion loss value on each SRS antenna port of the terminal at the current SRS transmission occasion.

3. The method of claim 2, wherein, Delta T of SRS antenna insertion loss RxSRS Granularity is SRS antenna switching pattern.

4. The method of claim 2, wherein, ΔT of SRS antenna insertion loss of the terminal at a current SRS transmission occasion RxSRS corresponding to a current SRS antenna switching pattern and carrier frequency of the terminal at the current SRS transmission occasion.

5. The method of claim 2, wherein, ΔT of the SRS antenna insertion loss of the terminal at the current SRS transmission occasion RxSRS is one of 3.0, 4.0, 4.5, 5.5, 5.8, 6.0, 7.0, 7.3, 7.5, 8.5, 8.8, 9.0, 10.3 dB.

6. The method of claim 2, wherein, the terminal supports and the ΔT of the SRS antenna insertion loss corresponding to the carrier frequency of the SRS antenna switching mode RxSRS is one or more of 3.0, 4.0, 4.5, 5.5, 5.8, 6.0, 7.0, 7.3, 7.5, 8.5, 8.8, 9.0, 10.3 dB.

7. The method of claim 2, wherein, The actual SRS antenna insertion loss value of the terminal at the current SRS transmission occasion is a value between [0, 10.3] dB.

8. The method of claim 2, wherein, The actual insertion loss value on each SRS antenna port is a value between [0, 10.3] dB.

9. The method of claim 1, wherein, Further comprising: Receiving terminal capability query signaling sent by the network device; Wherein, the terminal reports the sounding reference signal SRS insertion loss information of the terminal to the network device, comprising: In response to the terminal capability query signaling, the terminal sends terminal capability information signaling to the network device, and the terminal capability information signaling comprises the SRS antenna insertion loss information.

10. The method of claim 1, wherein, The terminal reports the sounding reference signal SRS insertion loss information of the terminal to the network device, comprising: After receiving the radio resource control reconfiguration signaling sent by the network device, the terminal triggers by itself to send terminal assistance information signaling to the network device, and the terminal assistance information signaling comprises the SRS antenna insertion loss information.

11. The method of claim 1, wherein, Further comprising: Receiving terminal information query signaling sent by the network device; Wherein, the terminal reports the sounding reference signal SRS insertion loss information of the terminal to the network device, comprising: In response to the terminal information query signaling, the terminal sends terminal information response signaling to the network device, and the terminal information response signaling comprises the SRS antenna insertion loss information.

12. The method according to any one of claims 9 to 11, characterized in that, The terminal capability information signaling or the terminal assistance information signaling or the terminal information response signaling includes a first field for indicating a ΔT of SRS antenna insertion loss of the terminal at a current SRS transmission occasion RxSRS .

13. The method of claim 12, wherein, The first field comprises the SRS-delta-TRxSRS-r19 field.

14. The method of claim 12, wherein, The first field is an enumeration type.

15. The method according to any one of claims 9 to 11, characterized in that, The terminal capability information signaling or the terminal auxiliary information signaling or the terminal information response signaling comprises a second field for indicating the SRS antenna switching mode supported by the terminal and the ΔT of the SRS antenna insertion loss corresponding to the carrier frequency RxSRS .

16. The method of claim 15, wherein, The terminal capability information signaling or the terminal assistance information signaling or the terminal information response signaling comprises one or more second fields, and the number of second fields is determined according to the SRS antenna switching mode and the number of carrier frequencies supported by the terminal.

17. The method of claim 15, wherein, The second field comprises the SRS-delta-TRxSRS-perSRSmode-perBand-r19 field. SRS-delta-TRxSRS-perSRSmode-perBand-r19 field is used to indicate the ΔT of each SRS antenna switching mode and each carrier frequency corresponding to the SRS antenna insertion loss supported by the terminal RxSRS .

18. The method of claim 15, wherein, The second field is an enumeration type.

19. The method according to any one of claims 9 to 11, characterized in that, The terminal capability information signaling or the terminal assistance information signaling or the terminal information response signaling comprises a third field, and the third field is used to indicate the actual SRS antenna insertion loss value of the terminal at the current SRS transmission occasion.

20. The method of claim 19, wherein, The third field comprises the SRS-actual-IL-r19 field.

21. The method of claim 19, wherein, The third field is an enumeration type or an integer type.

22. The method of claim 19, wherein, When the value of the third field is i, it indicates that the actual SRS antenna insertion loss value of the terminal at the current SRS transmission occasion is between (i-1, i] dB, i is an integer greater than or equal to 1 and less than or equal to 11.

23. The method according to any one of claims 9 to 11, characterized in that, The terminal capability information signaling or the terminal assistance information signaling or the terminal information response signaling includes a fourth field used for indicating actual insertion loss values of the terminal on each SRS antenna port in a current SRS transmission occasion.

24. The method of claim 23, wherein, The fourth field includes an SRS-actual-IL-perport-r19 field.

25. The method of claim 23, wherein, The number of the fourth fields is the same as the number of SRS antenna ports that the terminal supports to simultaneously send SRS in the current SRS transmission occasion. Each fourth field is used for indicating an actual insertion loss value of the terminal on a corresponding SRS antenna port supported by the terminal in the current SRS transmission occasion.

26. The method of claim 23, wherein, The fourth field is an enumeration type or an integer type.

27. The method of claim 23, wherein, When the value of the fourth field is i, it indicates that the actual insertion loss value of the terminal on the corresponding SRS antenna port in the current SRS transmission occasion is between (i-1, i] dB, i is an integer greater than or equal to 1 and less than or equal to 11.

28. A method of communication, comprising: Comprising: The network device receives SRS antenna insertion loss information of the terminal reported by the terminal through a radio resource control layer.

29. A terminal, characterized by Comprising: The first transceiver is configured to report SRS antenna insertion loss information of the terminal to the network device through a radio resource control layer.

30. A network device, comprising: Comprising: The second transceiver is configured to receive SRS antenna insertion loss information of the terminal reported by the terminal through a radio resource control layer.

31. A communication system, characterized by Comprising: The terminal of claim 29 and the network device of claim 30.

32. A communications device, characterized by Comprising: A processor; And A memory configured to store executable instructions of the processor; The processor is configured to execute the method of any one of claims 1-27 or the method of claim 28 by executing the executable instructions.

33. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the method of any one of claims 1-27 or the method of claim 28.

34. A computer program product comprising a computer program which, when executed by a processor, performs the method of any one of claims 1-27 or the method of claim 28.

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