CN114449562B - Communication method, terminal device and network device - Google Patents
Communication method, terminal device and network device Download PDFInfo
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- CN114449562B CN114449562B CN202210061528.4A CN202210061528A CN114449562B CN 114449562 B CN114449562 B CN 114449562B CN 202210061528 A CN202210061528 A CN 202210061528A CN 114449562 B CN114449562 B CN 114449562B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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Abstract
The application provides a communication method, terminal equipment and network equipment. The method comprises the following steps: the terminal equipment sends a first SRS to the network equipment, wherein the first SRS is used for diagnosing whether the first antenna port of the terminal equipment is abnormal or not. The terminal device and/or the network device may determine an abnormal situation of the first antenna port according to the first SRS. According to the abnormal condition of the first antenna port, the antenna port used by the terminal equipment for data transmission can be adjusted, so that the antenna port which is not abnormal can normally communicate, and the uplink and downlink throughput when the antenna port is abnormal is improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a communications method, a terminal device, and a network device.
Background
The terminal device may include one or more antenna ports (ports). The bit error rate may increase when one or more of the antenna ports is abnormal or malfunctioning. The related art reduces the error rate by reducing the MCS level of scheduling, retransmission, etc. because it cannot be determined which antenna port or ports are abnormal. It will be appreciated that this approach may result in reduced throughput for all antenna ports, i.e. non-failed antenna ports may also be affected by failed antenna ports. Therefore, when an abnormality occurs in one or some antenna ports of the terminal device, the uplink and downlink throughput is greatly reduced.
Disclosure of Invention
In view of this, the present application provides a communication method, a terminal device, and a network device, so as to solve the problem of reduced uplink and downlink throughput caused by an abnormal antenna port.
In a first aspect, the present application provides a communication method, including: the terminal device sends a first SRS to the network device, wherein the first SRS is used for diagnosing a first antenna port of the terminal device.
In a second aspect, the present application provides a communication method, including: the network equipment receives a first SRS sent by the terminal equipment, wherein the first SRS is used for diagnosing a first antenna port of the terminal equipment.
In a third aspect, the present application provides a terminal device, including: and the first sending unit is used for sending a first SRS to the network equipment, and the first SRS is used for diagnosing whether the first antenna port of the terminal equipment is abnormal or not.
In a fourth aspect, the present application provides a network device, including a third receiving unit, configured to receive a first SRS sent by a terminal device, where the first SRS is used to diagnose whether an abnormality occurs in a first antenna port of the terminal device.
In a fifth aspect, the present application provides a terminal device comprising a processor, a memory, a communication interface, the memory being configured to store one or more computer programs, the processor being configured to invoke the computer programs in the memory to cause the terminal device to perform the method of the first aspect.
In a sixth aspect, the present application provides a network device comprising a processor, a memory, a communication interface, the memory for storing one or more computer programs, the processor for invoking the computer programs in the memory to cause the network device to perform the method of the second aspect.
In a seventh aspect, embodiments of the present application provide a communication system, where the system includes the terminal device and/or the network device. In another possible design, the system may further include other devices that interact with the terminal or the network device in the solution provided in the embodiments of the present application.
In an eighth aspect, embodiments of the present application provide a computer-readable storage medium storing a computer program, the computer program causing a terminal device to perform some or all of the steps in the method of the first aspect.
In a ninth aspect, embodiments of the present application provide a computer-readable storage medium storing a computer program that causes a network device to perform some or all of the steps of the method of the second aspect described above.
In a tenth aspect, embodiments of the present application provide a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program operable to cause a terminal to perform some or all of the steps of the method of the first aspect above. In some implementations, the computer program product can be a software installation package.
In an eleventh aspect, embodiments of the present application provide a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program operable to cause a network device to perform some or all of the steps of the method of the second aspect described above. In some implementations, the computer program product can be a software installation package.
In a twelfth aspect, embodiments of the present application provide a chip comprising a memory and a processor, the processor being operable to invoke and run a computer program from the memory to implement some or all of the steps described in the methods of the first or second aspects above.
In a thirteenth aspect, there is provided a computer program product comprising a program for causing a computer to perform the method of the first aspect.
In a fourteenth aspect, there is provided a computer program product comprising a program for causing a computer to perform the method of the second aspect.
In a fifteenth aspect, there is provided a computer program for causing a computer to perform the method of the first aspect.
In a sixteenth aspect, there is provided a computer program for causing a computer to perform the method of the second aspect.
The terminal device and/or the network device may determine an anomaly of the first antenna port from the first sounding reference signal (sounding reference signal, SRS). According to the abnormal condition of the first antenna port, the antenna port used by the terminal equipment for data transmission can be adjusted, so that the antenna port which is not abnormal can normally communicate, and the uplink and downlink throughput when the antenna port is abnormal is improved.
Drawings
Fig. 1 is a schematic diagram of a communication system to which the present application may be applied.
Fig. 2 is a schematic flow chart of a communication method provided in an embodiment of the present application.
Fig. 3 is an exemplary diagram of a transmission port diagnosis SRS according to an embodiment of the present application.
Fig. 4 is an exemplary diagram of a first SRS resource set provided in an embodiment of the present application.
Fig. 5 is an exemplary diagram of an SRS time domain resource according to an embodiment of the present application.
Fig. 6 is an exemplary diagram of another SRS time domain resource provided in an embodiment of the present application.
Fig. 7 is a schematic flow chart of another communication method provided in an embodiment of the present application.
Fig. 8 is a schematic flow chart of still another communication method provided in an embodiment of the present application.
Fig. 9 is a schematic structural diagram of a terminal device provided in an embodiment of the present application.
Fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present application.
Fig. 11 is a schematic structural diagram of a communication device of an embodiment of the present application.
Detailed Description
The technical solutions in the present application will be described below with reference to the accompanying drawings.
Fig. 1 is a wireless communication system 100 to which embodiments of the present application apply. The wireless communication system 100 may include a network device 110 and a terminal device 120. Network device 110 may be a device that communicates with terminal device 120. Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices 120 located within the coverage area.
Fig. 1 illustrates one network device and two terminals, alternatively, the wireless communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within a coverage area, which is not limited in this embodiment of the present application.
Optionally, the wireless communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.
It should be understood that the technical solution of the embodiments of the present application may be applied to various communication systems, for example: fifth generation (5th generation,5G) systems or New Radio (NR), long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD), and the like. The technical scheme provided by the application can also be applied to future communication systems, such as a sixth generation mobile communication system, a satellite communication system and the like.
The terminal device in the embodiments of the present application may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a Mobile Station (MS), a Mobile Terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the application can be a device for providing voice and/or data connectivity for a user, and can be used for connecting people, things and machines, such as a handheld device with a wireless connection function, a vehicle-mounted device and the like. The terminal device in the embodiments of the present application may be a mobile phone (mobile phone), a tablet (Pad), a notebook, a palm, a mobile internet device (mobile internet device, MID), a wearable device, a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), or the like. Alternatively, the UE may be used to act as a base station. For example, the UEs may act as scheduling entities that provide side-uplink signals between UEs in V2X or D2D, etc. For example, a cellular telephone and a car communicate with each other using side-link signals. Communication between the cellular telephone and the smart home device is accomplished without relaying communication signals through the base station.
The network device in the embodiments of the present application may be a device for communicating with a terminal device, which may also be referred to as an access network device or a radio access network device, e.g. the network device may be a base station. The network device in the embodiments of the present application may refer to a radio access network (radio access network, RAN) node (or device) that accesses the terminal device to the wireless network. The base station may broadly cover or replace various names in the following, such as: a node B (NodeB), an evolved NodeB (eNB), a next generation NodeB (gNB), a relay station, an access point, a transmission point (transmitting and receiving point, TRP), a transmission point (transmitting point, TP), a master MeNB, a secondary SeNB, a multi-mode wireless (MSR) node, a home base station, a network controller, an access node, a wireless node, an Access Point (AP), a transmission node, a transceiver node, a baseband unit (BBU), a remote radio unit (Remote Radio Unit, RRU), an active antenna unit (active antenna unit, AAU), a radio head (remote radio head, RRH), a Central Unit (CU), a Distributed Unit (DU), a positioning node, and the like. The base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. A base station may also refer to a communication module, modem, or chip for placement within the aforementioned device or apparatus. The base station may also be a mobile switching center, a device-to-device (D2D), a vehicle-to-device (V2X), a device that assumes a base station function in machine-to-machine (M2M) communication, a network-side device in a 6G network, a device that assumes a base station function in a future communication system, or the like. The base stations may support networks of the same or different access technologies. The embodiment of the application does not limit the specific technology and the specific device form adopted by the network device.
The base station may be fixed or mobile. For example, a helicopter or drone may be configured to act as a mobile base station, and one or more cells may move according to the location of the mobile base station. In other examples, a helicopter or drone may be configured to function as a device to communicate with another base station.
In some deployments, the network device in embodiments of the present application may refer to a CU or a DU, or the network device includes a CU and a DU. The gNB may also include an AAU.
Network devices and terminal devices may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; the device can be deployed on the water surface; but also on aerial planes, balloons and satellites. In the embodiment of the application, the scene where the network device and the terminal device are located is not limited.
It should be understood that all or part of the functionality of the communication device in this application may also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (e.g. a cloud platform).
The terminal device may include one or more antenna ports. The antenna ports may be used for data transmission and/or reception. The bit error rate may increase when one or more of the antenna ports is abnormal or malfunctioning. The related art reduces the error rate by reducing the MCS level of scheduling, retransmission, etc. because it cannot be determined which antenna port or ports are abnormal. It will be appreciated that this approach may result in reduced throughput for all antenna ports, i.e. non-failed antenna ports may also be affected by failed antenna ports. Therefore, when an abnormality occurs in one or some antenna ports of the terminal device, the uplink and downlink throughput is greatly reduced.
In view of the above, the present application proposes a communication method that can be used to diagnose whether an antenna port of a terminal device is abnormal or not, and determine which antenna port of the terminal device is abnormal.
Fig. 2 is a schematic flow chart of a communication method provided in an embodiment of the present application. The method shown in fig. 2 may be implemented by a terminal device and a network device. The method shown in fig. 2 may include step S210.
In step S210, the terminal device sends a first SRS to the network device.
The first SRS may be used to diagnose whether an abnormality occurs in the first antenna port of the terminal device. For example, the network device may measure the received first SRS to obtain a measurement result of the first SRS. The network device and/or the terminal device may determine whether the first antenna port is abnormal according to the measurement result of the first SRS. In some embodiments, an SRS similar to the first SRS for diagnosis of an antenna port may be referred to as a port diagnosis SRS.
It should be noted that the first antenna port may be used for data transmission and/or data reception. That is, the first SRS may be used for diagnosing a transmitting antenna port as well as a receiving antenna port.
The terminal device and/or the network device may determine an abnormal situation of the first antenna port according to the first SRS. According to the abnormal condition of the first antenna port, the antenna port used by the terminal equipment for data transmission can be adjusted, so that the antenna port which is not abnormal can normally communicate, and the uplink and downlink throughput when the antenna port is abnormal is improved.
The terminal device may include one or more antenna ports. The first antenna port may be any one of one or more antenna ports. As an implementation, the first SRS may be transmitted through a first antenna port of the terminal device. It is understood that in the case where the terminal device includes a plurality of antenna ports, the plurality of antenna ports may respectively correspond to one port diagnostic SRS. SRS for multiple port diagnostics may be transmitted on the corresponding antenna port.
Fig. 3 is an exemplary diagram of a transmission port diagnosis SRS according to an embodiment of the present application. The terminal device may include 4 antenna ports. The 4 antenna ports may be antenna port 0, antenna port 1, antenna port 2, and antenna port 3, respectively. The 4 antenna ports may correspond one-to-one with the 4 port diagnostic SRS. The terminal device may diagnose whether an abnormality occurs in the corresponding antenna port by transmitting one or more of the 4 port diagnostic SRS.
The first SRS may include an identification of the first antenna port such that the first SRS corresponds to the first antenna port. For example, the resource parameter of the first SRS may include an identification of an antenna port. The identification of the antenna port may be, for example, a port index (index).
Alternatively, the terminal device may transmit the first SRS a plurality of times. The terminal device and/or the network device may diagnose whether an abnormality occurs in the first antenna port in combination with the measurement results of the plurality of first SRSs. It can be appreciated that, according to the measurement results of the plurality of first SRSs, an error of a single first SRS measurement can be avoided, thereby diagnosing whether the first antenna port is abnormal or not more accurately.
The antenna port diagnostic event of the terminal device may be an emergency event, and thus, the first SRS may be an aperiodic SRS. With reference to the specifications of the related art (e.g., 38.214 or 38.211 protocol), the first SRS may be triggered by downlink control information (downlink control information, DCI). For example, the network device may send the first DCI to the terminal device. The first DCI may be used to schedule the first SRS. The first DCI may be used to indicate resources of the first SRS. For example, the first DCI may indicate a first SRS resource set (SRS resource set) for port diagnostics. Wherein the first SRS resource set may include resources of the first SRS. It is to be appreciated that the first DCI can indicate a plurality of SRS resource sets, each of which can be used for port diagnostics. The first SRS resource set may be any one of a plurality of SRS resource sets. The terminal device may parse the first DCI, thereby specifying the first SRS resource set, and perform transmission of the first SRS according to the scheduling configuration of the first DCI.
The number of SRS resources in the first SRS resource set may be less than or equal to the number of antenna ports of the terminal device. Taking the terminal device with 4 antenna ports as an example, the number of SRS resources in the first SRS resource set may be less than or equal to 4. Fig. 4 is an exemplary diagram of a first SRS resource set provided in an embodiment of the present application. The first SRS resource set shown in fig. 4 may include 4 SRS resources for diagnosis of antenna ports of a terminal device including 4 ports. The 4 antenna ports of the terminal device can be expressed as: port0 (port 0), port1 (port 1), port2 (port 2), and port3 (port 3). The 4 SRS resources of the first SRS resource set may be a port 0SRS resource, a port 1SRS resource, a port 2SRS resource, and a port 3SRS resource, respectively. The first SRS may be used for diagnosing any one of the antenna ports of port0, port1, port2, and port 3. That is, the resources occupied by the first SRS may be any one of the port 0SRS resources, the port 1SRS resources, the port 2SRS resources, and the port 3SRS resources.
As one implementation, the network device may send a command directly to instruct the terminal device to send the first SRS. That is, the terminal device may passively trigger the first antenna port diagnostic procedure based on the first SRS. For example, the network device may itself send the first DCI to the terminal device to instruct the terminal device to send the first SRS.
The application does not limit the first triggering condition that the network device instructs the terminal device to send the first SRS. The first trigger condition may be determined according to MCS level, retransmission situation, measurement situation. For example, the first trigger condition may include one or more of the following conditions: the MCS level of the downlink transmission of the terminal device is reduced, the terminal device applies for downlink retransmission to the network device, the network device initiates uplink retransmission for multiple times, the MCS level of the uplink scheduling of the network device is greatly reduced, and the quality of the SRS or PUSCH DMRS signal measured by the network device is reduced (for example, the quality is lower than a threshold value for multiple times).
As another implementation, the terminal device may request transmission of the first SRS. I.e. the terminal device may actively trigger a first antenna port diagnosis based on the first SRS. For example, the terminal device may send a first message to the network device. The first message may be for requesting the network device to allocate resources of the first SRS. The first message may be carried by PUSCH and/or PUCCH. After receiving the first message, the network device may send a first DCI to the terminal device to schedule the first SRS.
The application does not limit the second trigger condition that the terminal device requests to initiate the first SRS. The second trigger condition may be determined according to MCS level, retransmission situation, measurement situation. For example, the second trigger condition may include at least one of the following conditions: the MCS level of the downlink transmission of the terminal device is reduced, the measurement result of the downlink CSI/SSB is poor (for example, the measurement result is lower than the threshold value for a plurality of times), the network device initiates uplink retransmission for a plurality of times, or the MCS level of the uplink scheduling is reduced.
The network device may measure the first SRS to obtain a measurement result of the first SRS. The measurement result may include, for example, a signal quality of the first SRS. The network device and/or the terminal device may determine, according to the measurement result of the first SRS, whether an abnormality occurs in the first antenna port corresponding to the first SRS. For example, if the measurement of the first SRS is below the threshold, then the first antenna port anomaly may be determined.
It can be appreciated that the terminal device can transmit the first SRS multiple times. The network device may measure the first SRS that is sent multiple times, and the network device and/or the terminal device may determine, according to multiple measurement results of the first SRS, whether an abnormality occurs in a first antenna port corresponding to the first SRS. For example, if the measurement result n of the first SRS (n is an integer greater than 0) is lower than or equal to the threshold value a number of times, it may be determined that the first antenna port is abnormal. The abnormal condition of the first antenna port is determined through the measurement results of the first SRS for many times, so that the measurement error of the first SRS can be avoided, and the accuracy of the diagnosis of the first antenna port is improved.
The network device may send the measurement result of the first SRS to the terminal device, so that the terminal device obtains the measurement result of the first SRS, so that the terminal device determines whether an abnormality occurs in the first antenna port.
The network device may map the measurement result of the first SRS to a plurality of quantization levels and transmit the quantization levels as the measurement result of the first SRS to the terminal device. Wherein each quantization level may correspond to a respective measurement range. It can be appreciated that the number of bits occupied by the quantization level may be the measurement result of the first SRS of the cell, and thus, the network device transmits the quantization level to the terminal device, which may save signaling overhead for transmitting the measurement result of the first SRS.
The present application does not limit the number of quantization levels. For example, the number of quantization levels may be 16 levels, i.e., the measurement result of the first SRS may be mapped to 16 levels. It can be appreciated that the greater the number of quantization levels, the finer the accuracy of the representation of the measurement result of the first SRS by the quantization levels. The fewer the number of quantization levels, the fewer the transmission resources occupied by the quantization levels, and the fewer the signaling overhead occupied by transmitting the measurement result of the first SRS.
As one implementation, the quantization level of the measurement result of the first SRS may be transmitted through the second information. That is, the network device may transmit second information to the terminal device, wherein the second information may include a quantization level of the measurement result of the first SRS. The second information may also include an identification of a first antenna port corresponding to the first SRS. The second information may be carried, for example, by DCI.
The terminal device or the network device may adjust an antenna port of the data transmission (transmission and/or reception) according to the detection result of the first SRS. For example, in the case where an abnormality occurs in the first antenna port, the network device and/or the terminal device may not use the first antenna port for data transmission, so that the antenna port where no abnormality occurs may be allowed to communicate normally (e.g., transmit using a higher MCS). As one implementation, the network device may adjust the antenna ports used for transmission by configuring a codebook. For example, the network device may set the weighting coefficient of the antenna port where the abnormality occurs to 0 by selecting the codebook. As another implementation, the terminal device may adjust the use of the antenna ports.
The number of symbols (symbols) occupied by the first SRS is not limited, for example, the first SRS may occupy 1 symbol or 2 symbols.
Alternatively, the plurality of port diagnosis SRS may be transmitted separately in the time domain. A guard interval may be included between two adjacent SRS resources. The guard interval may enable the terminal device to implement port switching. The guard interval may be, for example, 1 symbol.
Fig. 5 is an exemplary diagram of an SRS time domain resource according to an embodiment of the present application. Fig. 5 shows a port diagnostic SRS time domain resource distribution for one terminal device including 4 antenna ports. The first slot (slot) shown in fig. 5 may be any slot in the communication process. For example, the first time slot may be an nth time slot, n being an integer greater than 0. The antenna ports of the terminal device may include port 0, port 1, port 2, and port 3. The port diagnostic SRS resources of the terminal device may include port 0SRS resources, port 1SRS resources, port 2SRS resources, and port 3SRS resources. The port 0SRS resource, the port 1SRS resource, the port 2SRS resource, and the port 3SRS resource may be in one-to-one correspondence with the port 0, the port 1, the port 2, and the port 3, respectively. As shown in fig. 5, the per-port diagnostic SRS resource may occupy 1 symbol. The guard interval may occupy 1 symbol. The distribution of SRS resources may conform to the specifications of the related art, and the distribution of SRS resources may be different from the specifications of the related art. For example, according to the NR rel16 protocol of the 5G system, SRS can occupy only the last 12 symbols of one slot at most. According to the NR rel16 protocol of the 5G system, in the example shown in fig. 5, SRS resources for port diagnosis may occupy time domain resources of symbols 7 to 13.
The embodiments provided herein may be applied to carrier aggregation. Carrier aggregation may enable aggregation of multiple carriers. The terminal device may send SRS for port diagnosis corresponding to the antenna port for each of the plurality of carriers, so as to diagnose whether the antenna port is abnormal in the frequency bands corresponding to the plurality of carriers. The terminal device or the network device can adjust the scheme of using the antenna ports on different frequency bands according to the measurement results of the network device on the SRS of different carriers.
For example, the plurality of carriers may include a first carrier and a second carrier. The terminal device may send a first SRS on the first carrier, or send a second SRS on the second carrier, where the first SRS may be used to diagnose whether the first antenna port is abnormal on the frequency band of the first carrier, and the second SRS may be used to diagnose whether the first antenna port is abnormal on the frequency band of the second carrier.
As one implementation, port diagnostic SRS for multiple carriers may be transmitted separately in the time domain for the same antenna port. For example, the terminal device may alternately transmit the port diagnosis SRS carrier by carrier in the time domain. Continuing with the first carrier and the second carrier described above as examples, the time domain resources occupied by the first SRS and the time domain resources occupied by the second SRS may be different.
Fig. 6 is an exemplary diagram of a two-carrier SRS time domain resource according to an embodiment of the present application. The terminal device may include 4 antenna ports, port 0, port 1, port 2, and port 3, respectively. For the first carrier, the port diagnostic SRS may occupy 1 symbol. For example, the first SRS may occupy any one of a port 0SRS resource, a port 1SRS resource, a port 2SRS resource, and a port 3SRS resource of the first carrier. For the second carrier, the port diagnostic SRS may occupy 2 symbols. The second SRS may occupy any one of a port 0SRS resource, a port 1SRS resource, a port 2SRS resource, and a port 3SRS resource of the second carrier. The port diagnostic SRS for the first carrier may be transmitted on the second slot. The port diagnostic SRS for the second carrier may be transmitted on the third slot. The second time slot may be an nth time slot, the third time slot may be an n+1th time slot, and n may be an integer greater than 0.
As another embodiment, port diagnostic SRS for multiple carriers may be transmitted on the same time domain resource, i.e., simultaneously, for the same antenna port. Taking the first carrier and the second carrier as examples, the first SRS may occupy the same time domain resource as the second SRS.
It can be appreciated that the time domain resources of the port diagnostic SRS for the plurality of carriers can be determined based on the terminal capabilities. For example, if the capability of the terminal device supports simultaneous transmission of SRS on multiple carriers, the terminal device may simultaneously transmit port diagnostic SRS for different carriers on multiple carriers. Alternatively, if the capability of the terminal device does not support simultaneous SRS transmission on multiple carriers, the terminal device may transmit port diagnostic SRS for different carriers on different time domain resources.
It can be appreciated that the terminal device can transmit the first SRS and the second SRS multiple times. The terminal device and/or the network device may determine, according to the measurement result of the plurality of first SRS, whether the first antenna port is abnormal for the first carrier. Or, the terminal device and/or the network device may determine, according to the measurement result of the second SRS for multiple times, whether the first antenna port is abnormal for the second carrier.
In one embodiment, in the case where the first SRS and the second SRS are transmitted multiple times, the time domain resource occupied by the first SRS and the time domain resource occupied by the second SRS may be the same or different. For example, the terminal device may transmit the first SRS and the second SRS separately in the time domain after the first SRS and the second SRS are simultaneously transmitted. Alternatively, the terminal device may transmit the first SRS and the second SRS simultaneously after separately transmitting the first SRS and the second SRS in the time domain. According to the multiple measurement results, the terminal equipment can acquire signal leakage states among multiple carriers, so that whether the antenna port of the terminal equipment is abnormal or not can be accurately determined.
A schematic flowchart of a communication method provided in an embodiment of the present application is described in detail below with reference to fig. 7 and 8.
Fig. 7 is a schematic flowchart of a communication method provided in an embodiment of the present application. The method can be applied to terminal equipment and network equipment. The method shown in the figure may include steps S710 to S760.
In step S710, the terminal device determines whether the port diagnosis SRS needs to be transmitted. The terminal device may determine whether the port diagnosis SRS needs to be transmitted by detecting an uplink or downlink MCS level, the number of retransmissions, or a signal measurement result, etc. As an implementation, the terminal device may determine that a port diagnostic SRS needs to be transmitted in at least one of the following cases: descending the downlink MCS, descending the uplink MCS, and repeatedly initiating uplink retransmission by the network equipment, wherein the downlink CSI/SSB measurement result is poor.
In step S720, if the terminal device determines that the port diagnosis SRS needs to be transmitted, the terminal device transmits a port diagnosis SRS transmission request to the network device.
In step S730, the network device transmits DCI to the terminal device to schedule the port diagnosis SRS.
In step S740, the terminal device analyzes the DCI of the scheduled port diagnosis SRS, and determines the resources of the port diagnosis SRS according to the DCI. For example, the terminal device may determine a set of SRS resources for the port diagnostic SRS.
In step S750, the terminal device transmits at least one antenna port diagnosis SRS. The terminal device may comprise at least one antenna port. The at least one port diagnostic SRS may correspond one-to-one with the at least one antenna port. The at least one port diagnostic SRS may include a first SRS. At least one port diagnostic SRS may be transmitted on each antenna port in turn.
In step S760, the network device measures the received port diagnosis SRS and obtains the measurement result of the port diagnosis SRS. The network device may quantize the measurement results such that the measurement results are mapped to a plurality of quantization levels.
The method shown in fig. 7 may further include step S770 and step S780.
In step S770, the network device feeds back the second information to the terminal device. The second information may include a quantization level of SRS measurements and corresponding antenna port identification. The second information may be carried through DCI.
In step S780, the terminal device may adjust an antenna port for data transmission or reception according to the received second information.
Fig. 8 is a schematic flow chart of a communication method provided in an embodiment of the present application. The method can be applied to terminal equipment and network equipment. The method shown in the figure may include steps S810 to S850.
In step S810, the network device determines whether the port diagnosis SRS needs to be transmitted. The network device may determine whether the port diagnosis SRS needs to be transmitted by detecting an uplink or downlink MCS level, the number of retransmissions, or a signal measurement result, etc. As one implementation, the network device may determine that a port diagnostic SRS needs to be transmitted in at least one of the following cases: downlink MCS drop, uplink MCS drop, poor measurement result of SRS or PUSCH DMRS, and multiple initiation of uplink retransmission by the network device.
In step S820, the network device transmits DCI to the terminal device to schedule the port diagnosis SRS.
In step S830, the terminal device analyzes the DCI of the scheduled port diagnosis SRS, and determines the resources of the port diagnosis SRS according to the DCI. For example, the terminal device may determine a set of SRS resources for the port diagnostic SRS.
In step S840, the terminal device transmits the port diagnosis SRS. The terminal device may comprise at least one antenna port. The at least one antenna port may correspond to the at least one port diagnostic SRS. The at least one port diagnostic SRS may include a first SRS. At least one port diagnostic SRS may be transmitted on each antenna port in turn.
In step S850, the network device measures the port diagnosis SRS, and obtains a measurement result of the port diagnosis SRS. The network device may quantize the measurement results such that the measurement results are mapped to a plurality of quantization levels.
The method shown in fig. 8 may further include step S860 and step S870.
In step S860, the network device feeds back the second information to the terminal device. The second information may include a quantization level of SRS measurements and corresponding antenna port identification. The second information may be carried through DCI.
In step S870, the terminal device may adjust an antenna port for data transmission or reception according to the received second information.
It should be noted that in some embodiments, the antenna port may also be referred to as a port.
Method embodiments of the present application are described above in detail in connection with fig. 1-8, and apparatus embodiments of the present application are described below in detail in connection with fig. 9-11. It is to be understood that the description of the method embodiments corresponds to the description of the device embodiments, and that parts not described in detail can therefore be seen in the preceding method embodiments.
Fig. 9 is a schematic block diagram of a terminal device 900 provided in an embodiment of the present application. The terminal device 900 may include a first transmitting unit 910.
The first transmitting unit 910 may be configured to transmit, to a network device, a first SRS, where the first SRS is used to diagnose whether an abnormality occurs in a first antenna port of the terminal device.
Alternatively, the first transmitting unit 910 may include: and the second sending unit is used for sending the first SRS at a first antenna port of the terminal equipment, wherein the first SRS comprises an identifier of the first antenna port.
Optionally, the terminal device 900 may further include: a first receiving unit, configured to receive a first DCI sent by the network device, where the first DCI is used to schedule the first SRS.
Optionally, the terminal device 900 may further include: and the third sending unit is used for sending a first message to the network equipment, wherein the first message is used for requesting the network equipment to allocate the resources of the first SRS.
Optionally, the terminal device 900 may further include: and the second receiving unit is used for receiving second information sent by the network equipment, wherein the second information comprises the quantization level of the measurement result of the first SRS.
Optionally, the first SRS belongs to a first carrier, where the first SRS is used to diagnose whether an abnormality occurs in a first antenna port of the terminal device for the first carrier, and the terminal device 900 may further include: a fourth transmitting unit, configured to transmit a second SRS to the network device; the second SRS belongs to a second carrier, and the second SRS is used for diagnosing whether a first antenna port of the terminal device is abnormal to the second carrier, and a time domain resource for transmitting the first SRS is different from a time domain resource for transmitting the second SRS.
Fig. 10 is a schematic block diagram of a network device 1000 according to an embodiment of the present application. The network device 1000 may include a third receiving unit 1010.
The third receiving unit 1010 may be configured to receive a first SRS sent by a terminal device, where the first SRS is used to diagnose whether an abnormality occurs in a first antenna port of the terminal device.
Optionally, the first SRS includes an identification of the first antenna port, and the first SRS is transmitted at the first antenna port of the terminal device.
Optionally, the network device 1000 may further include: and a fifth sending unit, configured to send a first DCI to the terminal device, where the first DCI is used to schedule the first SRS.
Optionally, the network device 1000 may further include: and a fourth receiving unit, configured to receive a first message sent by the terminal device, where the first message is used to request a network device to allocate a resource of the first SRS.
Optionally, the network device 1000 may further include: a sixth transmitting unit, configured to transmit second information to the terminal device, where the second information includes a quantization level of a measurement result of the first SRS.
Optionally, the first SRS belongs to a first carrier, where the first SRS is used to diagnose whether an abnormality occurs in a first antenna port of the terminal device for the first carrier, and the network device 1000 may further include: a fifth receiving unit, configured to receive a second SRS sent to the terminal device; the second SRS belongs to a second carrier, and the second SRS is used for diagnosing whether a first antenna port of the terminal device is abnormal to the second carrier, and a time domain resource for transmitting the first SRS is different from a time domain resource for transmitting the second SRS.
Optionally, the network device 1000 may further include: a determining unit, configured to determine, according to a measurement result of the first SRS, whether the first antenna port is abnormal; a setting unit, configured to set, in a case where the first antenna port is abnormal, a weighting coefficient of the first antenna port to 0 through codebook selection.
Fig. 11 is a schematic structural diagram of a communication device of an embodiment of the present application. The dashed lines in fig. 11 indicate that the unit or module is optional. The apparatus 1100 may be used to implement the methods described in the method embodiments above. The apparatus 1100 may be a chip, a terminal device or a network device.
The apparatus 1100 may include one or more processors 1110. The processor 1110 may support the apparatus 1100 to implement the methods described in the method embodiments above. The processor 1110 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (central processing unit, CPU). Alternatively, the processor may be another general purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), an off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The apparatus 1100 may also include one or more memories 1120. The memory 1120 has stored thereon a program that can be executed by the processor 1110 to cause the processor 1110 to perform the method described in the method embodiments above. The memory 1120 may be separate from the processor 1110 or may be integrated within the processor 1110.
The apparatus 1100 may also include a transceiver 1130. Processor 1110 may communicate with other devices or chips through transceiver 1130. For example, the processor 1110 may transmit and receive data to and from other devices or chips through the transceiver 1130.
The embodiment of the application also provides a computer readable storage medium for storing a program. The computer-readable storage medium may be applied to a terminal or a network device provided in the embodiments of the present application, and the program causes a computer to execute the method performed by the terminal or the network device in the embodiments of the present application.
Embodiments of the present application also provide a computer program product. The computer program product includes a program. The computer program product may be applied to a terminal or a network device provided in embodiments of the present application, and the program causes a computer to perform the methods performed by the terminal or the network device in the embodiments of the present application.
The embodiment of the application also provides a computer program. The computer program may be applied to a terminal or a network device provided in embodiments of the present application, and cause a computer to perform the methods performed by the terminal or the network device in the embodiments of the present application.
It should be understood that the terms "system" and "network" may be used interchangeably in this application. In addition, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The terms "first," "second," "third," and "fourth" and the like in the description and in the claims of this application and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
In the embodiment of the present application, the "indication" may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.
In the embodiment of the present application, "B corresponding to a" means that B is associated with a, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.
In the embodiment of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, or the like.
In the embodiment of the present application, the "pre-defining" or "pre-configuring" may be implemented by pre-storing a corresponding code, a table or other manners that may be used to indicate relevant information in a device (including, for example, a terminal device and a network device), and the specific implementation manner is not limited in this application. Such as predefined may refer to what is defined in the protocol.
In this embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited in this application.
In the embodiment of the present application, the term "and/or" is merely an association relationship describing the association object, which indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In various embodiments of the present application, the sequence number of each process does not mean the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disk (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (24)
1. A method of communication, the method comprising:
the method comprises the steps that a terminal device sends a first sounding reference signal SRS to a network device, wherein the first SRS is used for diagnosing whether an abnormality occurs in a first antenna port of the terminal device;
the first SRS belongs to a first carrier, and is used for diagnosing whether an abnormality occurs in a first antenna port of the terminal device for the first carrier, and the method further includes:
the terminal equipment sends a second SRS to the network equipment;
the second SRS belongs to a second carrier, and the second SRS is used for diagnosing whether a first antenna port of the terminal device is abnormal to the second carrier, and a time domain resource for transmitting the first SRS is different from a time domain resource for transmitting the second SRS.
2. The method of claim 1, wherein the terminal device transmitting the first SRS comprises:
and transmitting the first SRS at a first antenna port of the terminal equipment, wherein the first SRS comprises an identification of the first antenna port.
3. The method according to claim 1, wherein the method further comprises:
the terminal equipment receives first Downlink Control Information (DCI) sent by the network equipment, wherein the first DCI is used for scheduling the first SRS.
4. The method according to claim 1, wherein the method further comprises:
and the terminal equipment sends a first message to the network equipment, wherein the first message is used for requesting the network equipment to allocate the resource of the first SRS.
5. The method according to claim 1, wherein the method further comprises:
the terminal equipment receives second information sent by the network equipment, wherein the second information comprises a quantization level of a measurement result of the first SRS.
6. A method of communication, the method comprising:
the network equipment receives a first Sounding Reference Signal (SRS) sent by terminal equipment, wherein the first SRS is used for diagnosing whether an abnormality occurs in a first antenna port of the terminal equipment;
The first SRS belongs to a first carrier, and is used for diagnosing whether an abnormality occurs in a first antenna port of the terminal device for the first carrier, and the method further includes:
the network equipment receives a second SRS sent to the terminal equipment;
the second SRS belongs to a second carrier, and the second SRS is used for diagnosing whether a first antenna port of the terminal device is abnormal to the second carrier, and a time domain resource for transmitting the first SRS is different from a time domain resource for transmitting the second SRS.
7. The method of claim 6, wherein the first SRS comprises an identification of the first antenna port, the first SRS being transmitted at the first antenna port of the terminal device.
8. The method of claim 6, wherein the method further comprises:
the network device sends first Downlink Control Information (DCI) to the terminal device, wherein the first DCI is used for scheduling the first SRS.
9. The method of claim 6, wherein the method further comprises:
the network device receives a first message sent by the terminal device, where the first message is used to request the network device to allocate the resource of the first SRS.
10. The method of claim 6, wherein the method further comprises:
the network device transmits second information to the terminal device, wherein the second information comprises a quantization level of a measurement result of the first SRS.
11. The method of claim 6, wherein the method further comprises:
according to the measurement result of the first SRS, the network equipment determines whether the first antenna port is abnormal;
and under the condition that the first antenna port is abnormal, the network equipment sets the weighting coefficient of the first antenna port to 0 through codebook selection.
12. A terminal device, characterized in that the terminal device comprises:
a first sending unit, configured to send a first sounding reference signal SRS to a network device, where the first SRS is used to diagnose whether an abnormality occurs in a first antenna port of the terminal device;
the first SRS belongs to a first carrier, and is used for diagnosing whether an abnormality occurs in a first antenna port of the terminal device for the first carrier, and the terminal device further includes:
a fourth transmitting unit, configured to transmit a second SRS to the network device;
The second SRS belongs to a second carrier, and the second SRS is used for diagnosing whether a first antenna port of the terminal device is abnormal to the second carrier, and a time domain resource for transmitting the first SRS is different from a time domain resource for transmitting the second SRS.
13. The terminal device according to claim 12, wherein the first transmitting unit comprises:
and the second sending unit is used for sending the first SRS at a first antenna port of the terminal equipment, wherein the first SRS comprises an identifier of the first antenna port.
14. The terminal device according to claim 12, characterized in that the terminal device further comprises:
a first receiving unit, configured to receive first downlink control information DCI sent by the network device, where the first DCI is used to schedule the first SRS.
15. The terminal device according to claim 12, characterized in that the terminal device further comprises:
and the third sending unit is used for sending a first message to the network equipment, wherein the first message is used for requesting the network equipment to allocate the resources of the first SRS.
16. The terminal device according to claim 12, characterized in that the terminal device further comprises:
And the second receiving unit is used for receiving second information sent by the network equipment, wherein the second information comprises the quantization level of the measurement result of the first SRS.
17. A network device, the network device comprising:
a third receiving unit, configured to receive a first sounding reference signal SRS sent by a terminal device, where the first SRS is used to diagnose whether an abnormality occurs in a first antenna port of the terminal device;
the first SRS belongs to a first carrier, and is used for diagnosing whether an abnormality occurs in a first antenna port of the terminal device for the first carrier, and the network device further includes:
a fifth receiving unit, configured to receive a second SRS sent to the terminal device;
the second SRS belongs to a second carrier, and the second SRS is used for diagnosing whether a first antenna port of the terminal device is abnormal to the second carrier, and a time domain resource for transmitting the first SRS is different from a time domain resource for transmitting the second SRS.
18. The network device of claim 17, wherein the first SRS comprises an identification of the first antenna port, the first SRS being transmitted at the first antenna port of the terminal device.
19. The network device of claim 17, wherein the network device further comprises:
a fifth sending unit, configured to send first downlink control information DCI to the terminal device, where the first DCI is used to schedule the first SRS.
20. The network device of claim 17, wherein the network device further comprises:
and a fourth receiving unit, configured to receive a first message sent by the terminal device, where the first message is used to request a network device to allocate a resource of the first SRS.
21. The network device of claim 17, wherein the network device further comprises:
a sixth transmitting unit, configured to transmit second information to the terminal device, where the second information includes a quantization level of a measurement result of the first SRS.
22. The network device of claim 17, wherein the network device further comprises:
a determining unit, configured to determine, according to a measurement result of the first SRS, whether the first antenna port is abnormal;
a setting unit, configured to set, in a case where the first antenna port is abnormal, a weighting coefficient of the first antenna port to 0 through codebook selection.
23. A terminal device comprising a memory for storing a program and a processor for invoking the program in the memory to perform the method of any of claims 1-5.
24. A network device comprising a memory for storing a program and a processor for invoking the program in the memory to perform the method of any of claims 6-11.
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