WO2022028325A1

WO2022028325A1 - Communication method and communication apparatus

Info

Publication number: WO2022028325A1
Application number: PCT/CN2021/109638
Authority: WO
Inventors: 钱锋; 金乐; 李振洲
Original assignee: 华为技术有限公司
Priority date: 2020-08-07
Filing date: 2021-07-30
Publication date: 2022-02-10

Abstract

The present application provides a communication method and a communication apparatus. A terminal device generates at least two codebooks; different candidate transmitting antennas are indicated by different codebooks; weighted pilot signals are sent to a network device after different pilot signals are weighted by using different codebooks; the network device measures the received pilot signals, and indicates, to the terminal device, an uplink transmission resource bearing one of the pilot signals; the terminal device determines, according to the uplink transmission resource indicated by the network device, a codebook corresponding to the uplink transmission resource, selects one of at least two candidate antennas as the transmitting antenna according to the codebook, and transmits uplink data to the network device by using the transmitting antenna, thus providing a solution for completing selection of an uplink transmitting antenna on the basis of uplink measurement.

Description

Communication method and communication device

This application claims the priority of the Chinese patent application with the application number 202010794244.7 and the application name "Communication Method and Communication Device", which was submitted to the State Intellectual Property Office on August 7, 2020, and is required to be submitted to the State on December 7, 2020 The Intellectual Property Office, the application number 202011420958.8, the priority of the Chinese patent application titled "communication method and communication device", the entire content of which is incorporated in this application by reference.

technical field

The present application relates to the field of communication, and more particularly, to a communication method and a communication device in the field of communication.

Background technique

At present, terminal equipment often has multiple antennas, but due to the limitation of uplink transmission radio frequency resources, there is often only one transmission channel inside the terminal equipment. Therefore, when performing uplink transmission, the terminal equipment can only select one antenna from multiple antennas. Antennas are used for uplink transmission. Therefore, it is very important to select the antenna to optimize the performance of uplink transmission.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a communication method and a communication device, which can realize the selection of an uplink transmission antenna based on an uplink measurement.

In a first aspect, a method for measurement is provided, comprising: generating at least two codebooks by a terminal device (which may also be a module in the terminal device, such as a chip); The first transmitting antenna transmits the first pilot signal on the first uplink transmission resource; according to the second codebook, the second pilot signal is transmitted on the second uplink transmission resource through the second transmitting antenna at the second moment, the first A codebook and the second codebook are any two of the at least two codebooks, and the first transmit antenna and the second transmit antenna are any two of the at least two candidate transmit antennas; Receive downlink control information (downlink control information, DCI), the DCI indicates a target uplink transmission resource, and the target uplink transmission resource is the first uplink transmission resource and the second uplink transmission resource. The uplink transmission resource of the frequency signal; according to the target uplink transmission resource, determine the target codebook, the target codebook is the first codebook or the second codebook; according to the target codebook, use the target transmission The antenna sends uplink data to the network device, and the target sending antenna is the first sending antenna or the second sending antenna.

Based on the above technical solution, using a non-codebook (NonCodeBook) measurement mechanism, the terminal device generates at least two codebooks, indicates different candidate transmitting antennas through different codebooks, and uses different codebooks to weight different pilot signals to the network device. Send the weighted pilot signal, the network device measures the received pilot signal, and indicates to the terminal device the uplink transmission resource of the pilot signal carrying the maximum signal strength, and the terminal device determines the uplink transmission resource according to the uplink transmission resource indicated by the network device. A codebook corresponding to the uplink transmission resource, and then according to the codebook, one of the at least two candidate antennas is selected as a transmission antenna, and the transmission antenna is used to send uplink data to the network device. In other words, by measuring the uplink pilot signal, according to the measurement result, the one with the best communication quality is selected from the at least two candidate transmitting antennas as the transmitting antenna in the uplink transmission, which is compared with the communication quality through the downlink transmission. To determine the sending antenna for uplink transmission, the method provided by the embodiment of the present application does not need to perform insertion loss conversion of the uplink and downlink paths, and has higher accuracy.

In addition, in a frequency-division duplex (FDD) system, since the frequencies used for uplink transmission and downlink transmission are different, the air interface channel does not have reciprocity. Therefore, the above-mentioned communication quality of downlink transmission determines uplink transmission. This method can only be applied to a time-division duplex (time-division duplex, TDD) system, and is not applicable to an FDD system. In contrast, the method provided by the embodiment of the present application can be applied to a TDD system. , and can be applied in the FDD system, therefore, the applicability is wider.

With reference to the first aspect, in some implementations of the first aspect, the terminal device sends first information, the first information requests the network device to allocate at least two uplink transmission resources, and the at least two uplink transmission resources include the the first uplink transmission resource and the second uplink transmission resource.

Combining the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the method further includes: the terminal device sends second information, the second information indicating that only one uplink transmission resource at the same time carries a pilot frequency Signal.

With reference to the first aspect and the foregoing implementations, in some implementations of the first aspect, the method further includes: the terminal device sends third information, where the third information indicates that the number of transmission layers for uplink transmission is 1.

In a second aspect, a communication apparatus is provided, and the communication apparatus may be the terminal device in the above method, or a chip applied in the terminal device. The communication apparatus includes: a processor, coupled to a memory, and configured to execute instructions in the memory, so as to implement the method executed by the terminal device in the first aspect and any possible implementation manner thereof; or, to implement the second A method performed by a terminal device in the aspect and any possible implementation manner thereof. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

When the communication device is a terminal device, the communication interface may be a transceiver, or an input/output interface.

When the communication device is a chip applied in a terminal device, the communication interface may be an input/output interface.

Optionally, the transceiver may be a transceiver circuit. Optionally, the input/output interface may be an input/output circuit.

In a third aspect, a communication apparatus is provided, and the communication apparatus may be the network device in the above method, or a chip applied in the network device. The communication device includes: a processor, coupled to a memory, and configured to execute instructions in the memory, so as to implement the method executed by the network device in the third aspect and any possible implementation manner thereof; or, to implement the fourth aspect described above A method performed by a network device in the aspect and any of its possible implementations. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

When the communication device is a network device, the communication interface may be a transceiver, or an input/output interface.

When the communication device is a chip applied in a network device, the communication interface may be an input/output interface.

In a fourth aspect, a program is provided, which, when executed by a processor, is used to execute any method in the first aspect and its possible implementations, or to execute the second aspect and its possible implementations Any of the methods in, or for performing any method in the third aspect and possible embodiments thereof, or for performing any method in the fourth aspect and possible embodiments thereof.

In a fifth aspect, a program product is provided, the program product comprising: program code, when the program code is run by a communication device, the communication device is made to execute any method in the first aspect and possible implementations thereof , or for performing any method in the second aspect and its possible implementations, or for performing any method in the third aspect and its possible implementations, or for performing the fourth aspect and its possible implementations any method of the embodiments. In a sixth aspect, a computer-readable storage medium is provided, the computer-readable storage medium stores a program, and when the program is executed, the communication device is made to execute any one of the above-mentioned first aspect and its possible implementation manners. method, either for carrying out any of the second aspect and its possible embodiments, or for carrying out any of the third aspect and its possible embodiments, or for carrying out the fourth aspect and its possible embodiments any method of the embodiments of .

Description of drawings

FIG. 1 is a schematic structural diagram of a mobile communication system applicable to an embodiment of the present application;

FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application;

Figures (a) to (d) in FIG. 3 are schematic diagrams of uplink transmission resources carrying different SRSs provided by an embodiment of the present application;

FIG. 4 is a schematic block diagram of a communication device provided by the present application;

FIG. 5 is a schematic block diagram of another communication apparatus provided by the present application.

detailed description

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (Long Term Evolution, LTE) system, LTE Frequency Division Duplex (Frequency Division Duplex, FDD) system, LTE Time Division Duplex (Time Division Duplex) , TDD) system, new radio (NR) in the fifth generation (5th Generation, 5G) mobile communication system and future mobile communication systems.

FIG. 1 is a schematic structural diagram of a mobile communication system applicable to an embodiment of the present application. As shown in FIG. 1 , the mobile communication system includes a core network device 110 , a radio access network device 120 and at least one terminal device (such as the terminal device 130 and the terminal device 140 in FIG. 1 ). The terminal equipment is connected to the wireless access network equipment in a wireless manner, and the wireless access network equipment is connected with the core network equipment in a wireless or wired manner. The core network device and the radio access network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the radio access network device can be integrated on the same physical device, or they can be one physical device. It integrates the functions of some core network equipment and some functions of the wireless access network equipment. Terminal equipment can be fixed or movable. FIG. 1 is just a schematic diagram, and the communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 1 . The embodiments of the present application do not limit the number of core network devices, wireless access network devices, and terminal devices included in the mobile communication system.

The wireless access network device in this embodiment of the application is an access device that a terminal device wirelessly accesses to the mobile communication system, and may be a base station NodeB, an evolved NodeB (evolved NodeB, eNodeB), a transmission and reception point (transmission and reception point) reception point, TRP), the next generation NodeB (gNB) in the 5G mobile communication system, the base station in the future mobile communication system or the access node in the WiFi system, it can also be a cloud wireless access network (Cloud Radio The wireless controller in the Access Network, CRAN) scenario can also be a relay station, a vehicle-mounted device, a wearable device, and a network device in the future evolved PLMN network. The embodiments of the present application do not limit the specific technology and specific device form adopted by the wireless access network device. In this application, wireless access network equipment is referred to as network equipment for short. Unless otherwise specified, in this application, network equipment refers to wireless access network equipment.

The terminal device in the embodiments of the present application may also be referred to as a terminal terminal, a terminal device (user equipment, UE), a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT), and the like. The terminal device can be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal device, industrial control (industrial control) wireless terminals in ), wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety Terminals, wireless terminals in smart cities, wireless terminals in smart homes, and so on. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

Network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle; can also be deployed on water; can also be deployed in the air on aircraft, balloons and satellites. The embodiments of the present application do not limit the application scenarios of the network device and the terminal device.

Communication between network equipment and terminal equipment can be performed through licensed spectrum (licensed spectrum), or unlicensed spectrum (unlicensed spectrum), or both licensed spectrum and unlicensed spectrum. The network device and the terminal device can communicate through the frequency spectrum below 6 GHz (gigahertz, GHz), and can also communicate through the frequency spectrum above 6 GHz, and can also use the frequency spectrum below 6 GHz and the frequency spectrum above 6 GHz for communication at the same time. The embodiments of the present application do not limit the spectrum resources used between the network device and the terminal device.

The embodiment of the present application provides a communication method. Using the measurement mechanism of NonCodeBook, a terminal device generates at least two codebooks, indicates different candidate transmitting antennas through different codebooks, and uses different codebooks to weight different pilot signals to the network. The device sends the weighted pilot signal, the network device measures the received pilot signal, and indicates to the terminal device the uplink transmission resource that carries the pilot signal with the maximum signal strength, and the terminal device according to the uplink transmission resource indicated by the network device, A codebook corresponding to the uplink transmission resource is determined, and then according to the codebook, one of the at least two candidate antennas is selected as a transmission antenna, and the transmission antenna is used to transmit uplink data to the network device. In other words, by measuring the uplink pilot signal, according to the measurement result, the one with the best communication quality is selected from the at least two candidate transmitting antennas as the transmitting antenna in the uplink transmission, which is compared with the communication quality through the downlink transmission. To determine the sending antenna for uplink transmission, the method provided by the embodiment of the present application does not need to perform insertion loss conversion of the uplink and downlink paths, and has higher accuracy.

In addition, in the FDD system, due to the different frequencies used for uplink transmission and downlink transmission, the air interface channel does not have reciprocity. Therefore, the above-mentioned method of determining the transmitting antenna of uplink transmission based on the communication quality of downlink transmission can only be applied to TDD. In the system, it is not applicable to the FDD system. In contrast, the methods provided in the embodiments of the present application can be applied to both the TDD system and the FDD system, and therefore have wider applicability.

The communication method provided by this embodiment of the present application will be described below with reference to the method 200 . FIG. 2 is a schematic flowchart of the method 200 . Below, each step of the method 200 is described in detail.

In this embodiment of the present application, the method 200 is described by taking a terminal device as an execution subject for executing the method 200 as an example. As an example and not a limitation, the execution body of the method 200 may also be a chip of a corresponding terminal device.

In step 210, the terminal device generates at least two codebooks.

In step 220, the terminal device transmits the first pilot signal on the first uplink transmission resource through the first transmission antenna at the first moment according to the first codebook. Accordingly, the network device receives the first pilot signal.

In step 230, the terminal device transmits the second pilot signal on the second uplink transmission resource through the second transmission antenna at the second moment according to the second codebook, and the first codebook and the second codebook are at least two codes Any two of the above, the first transmitting antenna and the second transmitting antenna are any two of the at least two candidate transmitting antennas. Accordingly, the network device receives the second pilot signal.

In step 240, the terminal device receives the DCI sent by the network device, the DCI indicates the target uplink transmission resource, and the target uplink transmission resource is the uplink transmission resource of the first uplink transmission resource and the second uplink transmission resource that carries the pilot signal with the maximum signal strength .

In step 250, the terminal device determines a target codebook according to the target uplink transmission resource, and the target codebook is the first codebook or the second codebook;

In step 260, the terminal device sends the uplink data to the network device using the target transmit antenna according to the target codebook, and the target transmit antenna is the first transmit antenna or the second transmit antenna.

For example, the terminal device has four candidate antennas, namely Ant1, Ant2, Ant3, and Ant4, but the terminal device has only one transmission channel. Therefore, when performing uplink transmission, the terminal device needs to select one antenna from the four antennas as the Sending antenna, use the selected one of the sending antennas to communicate with the network equipment through the sending channel. Any two of Ant1, Ant2, Ant3, and Ant4 here correspond to the first transmitting antenna and the second transmitting antenna in the method 200. The process of selecting the transmitting antenna by the terminal device will be described in detail below.

In step 210, when selecting a transmitting antenna, the terminal device may generate four different codebooks, which are respectively denoted as W1, W2, W3, and W4. Any two of W1 , W2 , W3 , and W4 here correspond to the first codebook and the second codebook in the method 200 .

It is worth mentioning that the four codebooks generated here are used to indicate the above-mentioned four candidate transmitting antennas, and are generated by the terminal equipment itself, instead of measuring through the downlink channel to obtain the channel quality of the downlink channel, according to The channel reciprocity of the TDD system obtains the channel quality of the uplink channel, and the codebook is generated according to the channel quality of the uplink channel.

For example, W1={1000}, W2={0100}, W3={0010}, W4={0001}, where W1 indicates Ant1, W2 indicates Ant2, W3 indicates Ant3, and W4 indicates Ant4.

In step 220 and step 230, the terminal device uses the four codebooks in step 210 to weight the four pilot signals respectively, and the four pilot signals generated after the weighting pass through different transmitting antennas at different times. Sent to network equipment on different uplink transmission resources.

For example, the pilot signal is a sounding reference signal (SRS), the pilot signal generated after W1 weighting is denoted as SRS1, the pilot signal generated after W2 weighting is denoted as SRS2, and the generated pilot signal after W3 weighting is denoted as SRS2. The pilot signal is denoted as SRS3, and the pilot signal generated after W4 weighting is denoted as SRS4.

For example, the terminal device sends SRS1 to the network device on the uplink transmission resource shown in (a) of FIG. 3 through Ant1, and sends the SRS1 to the network device on the uplink transmission resource shown in (b) of FIG. 3 through Ant2 SRS2, SRS3 is sent to the network device on the uplink transmission resource shown in (c) of FIG. 3 through Ant3, and SRS4 is sent to the network device through Ant4 on the uplink transmission resource shown in (d) of FIG. 3 . Any two of SRS1 , SRS2 , SRS3 , and SRS4 here correspond to the first pilot signal and the second pilot signal in the method 200 . Wherein, n in FIG. 3 is an integer greater than or equal to 0, and x ₁ , x ₂ , and x ₃ in FIG. 3 are all integers greater than or equal to 0.

It should be noted that, the uplink transmission resources bearing SRS1, SRS2, SRS3, and SRS4 shown in FIG. 3 are only used for exemplary description, and are not limited in this embodiment of the present application. For example, in specific implementation, the values of x ₁ , x ₂ , and x ₃ may all be 0, which means that the uplink transmission resources carrying SRS1, SRS2, SRS3, and SRS4 are all located in the time slot (slot) n, as long as it is ensured that the carrying The uplink transmission resources of SRS1, SRS2, SRS3, and SRS4 may not overlap at all.

In the following, for the convenience of description, the uplink transmission resource for sending SRS1 is denoted as SRS port (Port) 1, the uplink transmission resource for sending SRS2 is denoted as SRS Port2, and the uplink transmission resource for sending SRS3 is denoted as SRS Port3 , and denote the uplink transmission resource for sending SRS4 as SRS Port4. Any two of the SRS Port1, SRS Port2, SRS Port3, and SRS Port4 here correspond to the first uplink transmission resource and the second uplink transmission resource in the method 200.

The network device can determine the signal strengths of the four SRSs carried on the four uplink transmission resources. For example, the network device determines the signal-to-interference plus noise ratio (SINR) of SRS1, SRS2, SRS3, and SRS4 respectively. The SRS with the largest SINR is determined therefrom, and the network device may send DCI to the terminal device, and indicate to the terminal device the uplink transmission resource carrying the SRS with the largest SINR through the DCI. Correspondingly, in step 240, the terminal device receives the DCI sent by the network device. The uplink transmission resource bearing the SRS with the largest SINR here corresponds to the target uplink transmission resource in the method 200 .

For example, if the network device determines that the SINR of SRS1 is the largest, then the target uplink transmission resource is SRS Port1, or, if the network device determines that the SINR of SRS2 is the largest, then the target uplink transmission resource is SRS Port2, or, if the network device determines that the SINR of SRS3 is the largest, then the target The uplink transmission resource is SRS Port3, or, if the network device determines that the SINR of SRS4 is the largest, the target uplink transmission resource is SRS Port4.

In step 250, the terminal device determines a target codebook corresponding to the target uplink transmission resource from W1, W2, W3, and W4 according to the target uplink transmission resource. For example, if the target uplink transmission resource is SRS Port1, then the corresponding target codebook is W1, or if the target uplink transmission resource is SRS Port2, then the corresponding target codebook is W2, or if the target uplink transmission resource is SRS Port3, then the corresponding If the target codebook is W3, or the target uplink transmission resource is SRS Port4, the corresponding target codebook is W4.

In step 260, the terminal device determines the target transmit antenna corresponding to the target codebook from Ant1, Ant2, Ant3, and Ant4 according to the target codebook, and uses the target transmit antenna to transmit uplink data to the network device. Accordingly, the network device receives the uplink data. For example, if the target codebook is W1, then the target transmit antenna is Ant1, or if the target codebook is W2, the target transmit antenna is Ant2, or if the target codebook is W3, the target transmit antenna is Ant3. , or, if the target codebook is W4, the corresponding target transmit antenna is Ant4.

For example, the target sending antenna finally determined by the terminal device is Ant1, which means that among SRS1, SRS2, SRS3, and SRS4, the largest SINR is SRS1. When , the used modulation and coding scheme (modulation and coding scheme, MCS) may be the MCS corresponding to the SINR of SRS1.

The above-mentioned four uplink transmission resources for sending SRS1, SRS2, SRS3, and SRS4 may be requested by the terminal equipment from the network equipment. For example, the terminal equipment may request uplink transmission resources in the following ways:

The terminal device sends first information to the network device, the first information requests the network device to allocate at least two uplink transmission resources, and the at least two uplink transmission resources include the first uplink transmission resource and the second uplink transmission resource. Accordingly, the network device receives the first information.

For example, the terminal device sends capability indication information to the network device. The capability indication information includes signaling maxNumberSRS-ResourcePerSet=4. The network device allocates 4 uplink transmission resources to the terminal device according to the capability indication information. At the same time, since maxNumberSRS-ResourcePerSet=4, The network device considers that the terminal device has the ability to use four transmit antennas to transmit four SRSs in parallel on four transport layers at the same time, wherein one transmit antenna is used to transmit one SRS on one transport layer at the same time.

However, since the terminal device has only one transmission channel, in other words, the terminal device can only transmit SRS through one transmission antenna at the same time. If the terminal device simultaneously transmits 4 SRS through this transmission antenna, the SRS received by the network device As a whole, the SINRs of SRS1, SRS2, SRS3, and SRS4 cannot be determined separately, and thus the terminal device cannot be instructed to select the target transmit antenna from Ant1, Ant2, Ant3, and Ant4. Therefore, in order to avoid the occurrence of this situation, the terminal device may send the second information to the network device, the second information indicating that only one uplink transmission resource bears the SRS at the same time. Accordingly, the network device receives the second information.

For example, the terminal device sends capability indication information to the network device, the capability indication information includes signaling maxNumberSimultaneousSRS-ResourceTx=1, and the network device determines that the terminal device can only send one SRS at a time according to the capability indication information.

In addition, since maxNumberSRS-ResourcePerSet=4, the network device will consider that the terminal device has the ability to transmit in parallel on 4 transport layers. At this time, when indicating the target codebook to the terminal device, the network device may indicate at least two target codes. However, since the terminal device only needs to select one of the four candidate transmit antennas as the target transmit antenna according to one target codebook, if the network device indicates at least two target codebooks to the terminal device, the terminal device cannot select one from the candidate transmit antennas. The transmitting antenna selects the target transmitting antenna. Therefore, in order to avoid this situation, the terminal device may also send third information to the network device, where the third information indicates that the number of transmission layers for uplink transmission is 1. Accordingly, the network device receives the third information.

For example, the terminal device sends capability indication information to the network device, where the capability indication information includes signaling maxNumberMIMO-LayersNonCB-PUSCH=1, and the network device determines that the terminal device only supports uplink transmission of one transport layer according to the capability indication information. The device indicates a target codebook so that the terminal device can select one of the four candidate transmit antennas as the target transmit antenna.

It should be noted that, the above only takes the number of candidate transmission antennas as 4 as an exemplary description, and the embodiment of the present application does not limit the number of candidate transmission antennas. For example, in specific implementation, the number of candidate transmit antennas may also be two.

It should also be noted that the above only takes the pilot signal as the SRS as an exemplary description, and the embodiment of the present application does not limit the type of the pilot signal.

It should also be noted that, the above only takes the determination of the target uplink transmission resource according to the SINR of the SRS as an exemplary description, which is not limited in this embodiment of the present application. For example, in specific implementation, the target uplink transmission resource may also be determined according to the reference signal receiving power (reference signal receiving power, RSRP) of the SRS.

It can be understood that, in order to realize the functions in the above embodiments, the terminal device includes corresponding hardware structures and/or software modules for executing each function. Those skilled in the art should easily realize that the units and method steps of each example described in conjunction with the embodiments disclosed in the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software-driven hardware depends on the specific application scenarios and design constraints of the technical solution.

FIG. 4 and FIG. 5 are schematic structural diagrams of possible communication apparatuses provided by embodiments of the present application. These communication apparatuses can be used to implement the functions of the terminal equipment in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In the embodiment of the present application, the communication apparatus may be the terminal device 130 or the terminal device 140 as shown in FIG. 1 , or may be a module (eg, a chip) applied to the terminal device.

As shown in FIG. 4 , the communication apparatus 400 includes a processing unit 410 and a transceiver unit 420 . The communication apparatus 400 is configured to implement the function of the terminal device in the method embodiment shown in FIG. 2 above.

When the communication apparatus 400 is used to implement the function of the terminal device in the method embodiment shown in FIG. 2:

The processing unit 410 is used for the processing unit to generate at least two codebooks.

The transceiver unit 420 is configured to send the first pilot signal on the first uplink transmission resource through the first sending antenna at the first moment according to the first codebook;

The transceiver unit 420 is further configured to send a second pilot signal on the second uplink transmission resource through the second transmission antenna at the second moment according to the second codebook, where the first codebook and the second codebook are Any two of the at least two codebooks, the first transmit antenna and the second transmit antenna are any two of the at least two candidate transmit antennas;

The transceiver unit 420 is further configured to receive downlink control information DCI, where the DCI indicates a target uplink transmission resource, and the target uplink transmission resource is the first uplink transmission resource and the second uplink transmission resource that bears the maximum signal strength. Uplink transmission resources for pilot signals;

The processing unit 410 is further configured to determine a target codebook according to the target uplink transmission resource, where the target codebook is the first codebook or the second codebook;

The transceiver unit 420 is further configured to send uplink data to a network device using a target sending antenna according to the target codebook, where the target sending antenna is the first sending antenna or the second sending antenna.

Optionally, in some embodiments, the transceiver unit 420 is further configured to send first information, where the first information requests the network device to allocate at least two uplink transmission resources, and the at least two uplink transmission resources include the first information. an uplink transmission resource and the second uplink transmission resource.

Optionally, in some embodiments, the transceiver unit 420 is further configured to send second information, where the second information indicates that only one uplink transmission resource at the same moment carries a pilot signal.

Optionally, in some embodiments, the transceiver unit 420 is further configured to send third information, where the third information indicates that the number of transport layers for uplink transmission is 1.

More detailed descriptions about the above-mentioned processing unit 410 and the transceiver unit 420 can be obtained directly by referring to the relevant descriptions in the method embodiment shown in FIG. 2 , and details are not repeated here.

As shown in FIG. 5 , the communication apparatus 500 includes a processor 510 and an interface circuit 520 . The processor 510 and the interface circuit 520 are coupled to each other. It can be understood that the interface circuit 520 can be a transceiver or an input-output interface. Optionally, the communication apparatus 500 may further include a memory 530 for storing instructions executed by the processor 510 or input data required by the processor 510 to execute the instructions or data generated after the processor 510 executes the instructions.

When the communication apparatus 500 is used to implement the method shown in FIG. 2 , the processor 510 is used to perform the functions of the above-mentioned processing unit 410 , and the interface circuit 520 is used to perform the functions of the above-mentioned transceiver unit 420 .

When the above communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiments. The terminal device chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal device, and the information is sent by the network device to the terminal device; or, the terminal device chip sends information to other modules (such as a radio frequency module or an antenna) in the terminal device antenna) to send information, the information is sent by the terminal equipment to the network equipment.

It can be understood that the processor in the embodiments of the present application may be a central processing unit (Central Processing Unit, CPU), and may also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. A general-purpose processor may be a microprocessor or any conventional processor.

The method steps in the embodiments of the present application may be implemented in a hardware manner, or may be implemented in a manner in which a processor executes software instructions. Software instructions can be composed of corresponding software modules, and software modules can be stored in random access memory (Random Access Memory, RAM), flash memory, read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM) , PROM), Erasable Programmable Read-Only Memory (Erasable PROM, EPROM), Electrically Erasable Programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory (Electrically EPROM, EEPROM), registers, hard disks, removable hard disks, CD-ROMs or known in the art in any other form of storage medium. An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and storage medium may reside in an ASIC. Alternatively, the ASIC may be located in a network device or in an end device. Of course, the processor and the storage medium may also exist in the network device or the terminal device as discrete components.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are executed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer program or instructions may be stored in or transmitted over a computer-readable storage medium. The computer-readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server that integrates one or more available media. The usable media can be magnetic media, such as floppy disks, hard disks, magnetic tapes; optical media, such as DVD; and semiconductor media, such as solid state disks (SSD).

In the various embodiments of the present application, if there is no special description or logical conflict, the terms and/or descriptions between different embodiments are consistent and can be referred to each other, and the technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

In this application, "at least one" means one or more, and "plurality" means two or more. "And/or", which describes the relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, it can indicate that A exists alone, A and B exist at the same time, and B exists alone, where A, B can be singular or plural. In the text description of this application, the character "/" generally indicates that the related objects are a kind of "or" relationship; in the formula of this application, the character "/" indicates that the related objects are a kind of "division" Relationship.

It can be understood that, the various numbers and numbers involved in the embodiments of the present application are only for the convenience of description, and are not used to limit the scope of the embodiments of the present application. The size of the sequence numbers of the above processes does not imply the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

A communication method, comprising:

generate at least two codebooks;

According to the first codebook, the first pilot signal is sent on the first uplink transmission resource through the first sending antenna at the first moment;

According to the second codebook, the second pilot signal is sent on the second uplink transmission resource through the second transmission antenna at the second moment, and the first codebook and the second codebook are the at least two codebooks Any two of the first transmission antenna and the second transmission antenna are any two of at least two candidate transmission antennas;

Receive downlink control information DCI, where the DCI indicates a target uplink transmission resource, and the target uplink transmission resource is an uplink transmission resource of the first uplink transmission resource and the second uplink transmission resource that carries the pilot signal with the maximum signal strength ;

determining a target codebook according to the target uplink transmission resource, where the target codebook is the first codebook or the second codebook;

According to the target codebook, uplink data is sent to the network device by using a target sending antenna, where the target sending antenna is the first sending antenna or the second sending antenna.
The method according to claim 1, wherein the method further comprises:

Sending first information, the first information requests the network device to allocate at least two uplink transmission resources, and the at least two uplink transmission resources include the first uplink transmission resource and the second uplink transmission resource.
The method according to claim 1 or 2, wherein the method further comprises:

Send second information, where the second information indicates that only one uplink transmission resource carries a pilot signal at the same time.
The method according to any one of claims 1 to 3, wherein the method further comprises:

Send third information, where the third information indicates that the number of transport layers for uplink transmission is 1.
A communication device, comprising:

a processing unit for generating at least two codebooks;

a transceiver unit, configured to send the first pilot signal on the first uplink transmission resource through the first sending antenna at the first moment according to the first codebook;

The transceiver unit is further configured to send a second pilot signal on the second uplink transmission resource through the second transmitting antenna at the second moment according to the second codebook, the first codebook and the second codebook is any two of the at least two codebooks, and the first transmit antenna and the second transmit antenna are any two of the at least two candidate transmit antennas;

The transceiver unit is further configured to receive downlink control information DCI, where the DCI indicates a target uplink transmission resource, and the target uplink transmission resource is the maximum signal strength carried in the first uplink transmission resource and the second uplink transmission resource the uplink transmission resources of the pilot signal;

The processing unit is further configured to determine a target codebook according to the target uplink transmission resource, where the target codebook is the first codebook or the second codebook;

The transceiver unit is further configured to send uplink data to a network device using a target sending antenna according to the target codebook, where the target sending antenna is the first sending antenna or the second sending antenna.
The communication device according to claim 5, wherein the transceiver unit is further configured to send first information, the first information requests a network device to allocate at least two uplink transmission resources, the at least two uplink transmission resources The resources include the first uplink transmission resource and the second uplink transmission resource.
The communication device according to claim 5 or 6, wherein the transceiver unit is further configured to send second information, the second information indicating that only one uplink transmission resource at the same time carries a pilot signal.
The communication device according to any one of claims 5 to 7, wherein the transceiver unit is further configured to send third information, where the third information indicates that the number of transport layers for uplink transmission is 1.
A communication device, characterized by comprising a processor and an interface circuit, the interface circuit being configured to receive signals from other communication devices other than the communication device and transmit to the processor or transfer signals from the processor The signal is sent to other communication devices than the communication device, and the processor is used to implement the method according to any one of claims 1 to 4 by means of a logic circuit or executing code instructions.
A computer-readable storage medium, characterized in that, a computer program or instruction is stored in the storage medium, and when the computer program or instruction is executed by a communication device, any one of claims 1 to 4 is implemented. Methods.