Communication method and device

Abstract

The present application proposes a communication method and apparatus, relating to the field of communication technologies. The solution is as follows: Based on reference signal configuration parameters, reference signal transmission is configured for cross-time unit transmission or retransmission. The reference signal is used for phase estimation, and the frequency-domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal (DMRS) transmission. In the present application, the terminal configures reference signal transmission for cross-time unit transmission or retransmission based on the reference signal configuration parameters. The reference signal is used for phase estimation, and the frequency-domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal (DMRS) transmission. Thus, the terminal can achieve phase tracking and calibration according to the reference signal, and can solve the problem in the related art that accurate phase tracking cannot be achieved when using the method of reducing the density of the demodulation reference signal for coverage enhancement, which is beneficial to ensuring the correctness of demodulation and improving the transmission performance.

Description

Technical Field

[0001] This application relates to the field of communications, and in particular, to a communication method and apparatus. Background Art

[0002] Currently, with the development of network technologies, for example, in order to meet the high requirements of network services for transmission rate and latency, terminals need to perform coverage enhancement. In related technologies, a method of reducing the density of Demodulation Reference Signals (DMRS) can be used for coverage enhancement. However, this method brings the problem of phase mutation. The demodulation reference signal transmitted in the previous time unit only represents the phase change of this transmission in the frequency domain and cannot track the phase change brought by the transmission in the next time unit. As a result, the phase distortion that occurs in the transmission of the next time unit cannot be compensated, which further affects subsequent demodulation and the transmission performance deteriorates. Summary of the Invention

[0003] The communication method, apparatus, terminal, base station, electronic device, and storage medium proposed in this application are used to solve the problem that the phase cannot be accurately tracked when using the method of reducing the density of demodulation reference signals for coverage enhancement in related technologies.

[0004] A first aspect embodiment of this application proposes a communication method applied to a terminal. The communication method includes: configuring reference signal transmission for cross-time unit transmission or retransmission based on reference signal configuration parameters, where the reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than the frequency domain resources occupied by the demodulation reference signal DMRS transmission.

[0005] A second aspect embodiment of this application proposes another communication method applied to a terminal. The communication method includes: receiving reference signal transmission for cross-time unit transmission or retransmission from a base station based on reference signal configuration parameters, where the reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than the frequency domain resources occupied by the demodulation reference signal DMRS transmission.

[0006] A third aspect embodiment of this application proposes another communication method applied to a base station. The communication method includes: configuring reference signal transmission for cross-time unit transmission or retransmission based on reference signal configuration parameters, where the reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than the frequency domain resources occupied by the demodulation reference signal DMRS transmission.

[0007] A fourth aspect embodiment of the present application proposes another communication method, including: for two adjacent time units in cross-time unit transmission or retransmission, signal transmissions are respectively configured in the last symbol of the first time unit and the first symbol of the second time unit, and the signal transmissions are used for phase estimation.

[0008] A fifth aspect embodiment of the present application proposes another communication method, including: for two adjacent time units in cross-time unit transmission or retransmission, signal transmissions are respectively received in the last symbol of the first time unit and the first symbol of the second time unit; and phase estimation is performed based on the signal transmissions.

[0009] A sixth aspect embodiment of the present application proposes a communication device applied to a terminal. The communication device includes: a first configuration module configured to configure reference signal transmission for cross-time unit transmission or retransmission based on reference signal configuration parameters, where the reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than those occupied by demodulation reference signal DMRS transmission.

[0010] A seventh aspect embodiment of the present application proposes another communication device applied to a terminal. The communication device includes: a receiving module configured to receive reference signal transmission from a base station for cross-time unit transmission or retransmission based on reference signal configuration parameters, where the reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than those occupied by demodulation reference signal DMRS transmission.

[0011] An eighth aspect embodiment of the present application proposes another communication device applied to a base station. The communication device includes: a second configuration module configured to configure reference signal transmission for cross-time unit transmission or retransmission based on reference signal configuration parameters, where the reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than those occupied by demodulation reference signal DMRS transmission.

[0012] A ninth aspect embodiment of the present application proposes another communication device, including: a third configuration module configured to respectively configure signal transmissions in the last symbol of the first time unit and the first symbol of the second time unit for two adjacent time units in cross-time unit transmission or retransmission, and the signal transmissions are used for phase estimation.

[0013] A tenth aspect embodiment of the present application proposes another communication device, including: a second receiving module configured to respectively receive signal transmissions in the last symbol of the first time unit and the first symbol of the second time unit for two adjacent time units in cross-time unit transmission or retransmission; and an estimation module configured to perform phase estimation based on the signal transmissions.

[0014] An embodiment of the eleventh aspect of the present application provides a terminal, including the communication device described in the sixth aspect embodiment of the present application, or the communication device described in the seventh aspect embodiment of the present application, or the communication device described in the ninth aspect embodiment of the present application, or the communication device described in the tenth aspect embodiment of the present application.

[0015] An embodiment of the twelfth aspect of the present application provides a base station, including the communication device described in the eighth aspect embodiment of the present application, or the communication device described in the ninth aspect embodiment of the present application, or the communication device described in the tenth aspect embodiment of the present application.

[0016] An embodiment of the thirteenth aspect of the present application provides an electronic device, including: at least one processor; and a memory communicatively connected to the at least one processor; wherein, the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the communication method described in the first aspect embodiment of the present application, or the communication method described in the second aspect embodiment of the present application, or the communication method described in the third aspect embodiment of the present application, or the communication method described in the fourth aspect embodiment of the present application, or the communication method described in the fifth aspect embodiment of the present application.

[0017] An embodiment of the fourteenth aspect of the present application provides a computer-readable storage medium storing computer instructions, and the computer instructions are used to cause the computer to execute the communication method described in the first aspect embodiment of the present application, or the communication method described in the second aspect embodiment of the present application, or the communication method described in the third aspect embodiment of the present application, or the communication method described in the fourth aspect embodiment of the present application, or the communication method described in the fifth aspect embodiment of the present application.

[0018] The embodiments provided by the present application at least have the following beneficial technical effects:

[0019] According to the communication method of the embodiments of the present application, a terminal configures reference signal transmission for cross-time unit transmission or retransmission based on reference signal configuration parameters. The reference signal is used for phase estimation, and the frequency-domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal (DMRS) transmission. Thus, the terminal can perform phase tracking and calibration according to the reference signal, and can solve the problem in the related art that when using the method of reducing the density of demodulation reference signals for coverage enhancement, the phase cannot be accurately tracked, which is beneficial to ensuring the correctness of demodulation and improving the transmission performance.

[0020] The additional aspects and advantages of the present application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, where:

[0022] Figure 1 It is a schematic flowchart of a communication method provided by an embodiment of the present application;

[0023] Figure 2 It is a schematic diagram of another communication method provided by an embodiment of the present application;

[0024] Figure 3 It is a schematic flowchart of another communication method provided by an embodiment of the present application;

[0025] Figure 4 It is a schematic flowchart of another communication method provided by an embodiment of the present application;

[0026] Figure 5 It is a schematic flowchart of another communication method provided by an embodiment of the present application;

[0027] Figure 6 It is a schematic flowchart of another communication method provided by an embodiment of the present application;

[0028] Figure 7 It is a schematic diagram of the structure of an electronic device provided by an embodiment of the present application. Detailed implementation manners

[0029] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application and should not be construed as limiting the present application.

[0030] The specific description of the base station in the embodiments of the present application is as follows: The base station (Base Station, BS) is deployed in the radio access network and provides wireless access functions for terminals. The base station can communicate wirelessly with the terminal via one or more antennas. The base station can provide communication coverage for its geographical area. The base station can include different types such as macro base stations, micro base stations, relay stations, access points, etc. In some embodiments, the base station may be referred to by those skilled in the art as base station transceiver, radio base station, access point, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Node B, evolved Node B (eNB or eNodeB), or some other appropriate terms. Exemplarily, in the 5G system, the base station is called gNB. For the convenience of description, in the embodiments of the present application, the device that provides wireless communication functions for the terminal is collectively referred to as the base station.

[0031] The specific description of the terminal in the embodiments of the present application is as follows: Terminals can be scattered throughout the mobile communication system, and each terminal can be stationary or mobile. Terminals may also be referred to by those skilled in the art as mobile stations, user stations, mobile units, user units, radio units, remote units, mobile devices, terminal devices, radio devices, radio communication devices, remote devices, mobile user stations, access user equipment, mobile user equipment, radio user equipment, remote user equipment, handheld devices, user agents, mobile clients, clients, or some other appropriate terms. Terminals can be cellular phones, Personal Digital Assistants (PDAs), radio modems, radio communication devices, handheld devices, tablet computers, laptop computers, cordless phones, Wireless Local Loop (WLL) stations, etc., capable of communicating with base stations in the mobile communication system.

[0032] Figure 1 It is a schematic flowchart of a communication method provided by the embodiments of the present application, executed by the terminal, as Figure 1 shown. The communication method includes the following steps:

[0033] S101, based on the reference signal configuration parameters, configure the reference signal transmission for cross-time unit transmission or retransmission. The reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than those occupied by the Demodulation Reference Signal (DMRS) transmission.

[0034] Currently, with the development of network technologies, for example, in order to meet the higher requirements of network services for transmission rate and latency, the terminal needs to enhance coverage. In related technologies, a method of reducing the density of the Demodulation Reference Signal (DMRS) can be used to enhance coverage. However, this method will bring the problem of phase mutation. The demodulation reference signal transmitted in the previous time unit only represents the phase change of this transmission in the frequency domain and cannot track the phase change brought by the transmission in the next time unit, resulting in the phase distortion that occurs in the transmission of the next time unit cannot be compensated, thereby affecting subsequent demodulation and reducing the transmission performance.

[0035] In the embodiments of the present application, the reference signal transmission can be configured for cross-time unit transmission or repetition based on the reference signal configuration parameters. The reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal DMRS transmission. Thus, the terminal can achieve phase tracking and calibration according to the reference signal transmission, and can solve the problem that in related technologies, when using the method of reducing the density of the demodulation reference signal to enhance coverage, the phase cannot be accurately tracked, which is beneficial to ensuring the correctness of demodulation and improving the transmission performance.

[0036] For example, as Figure 2 shown, the frequency domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal DMRS transmission.

[0037] Optionally, the reference signal is a Phase Tracking Reference Signal (PT-RS).

[0038] Optionally, the configuration of the reference signal for cross-time unit transmission or repetition is performed in response to notification indication information from the base station. It can be understood that the base station can send notification indication information to the terminal. Correspondingly, the terminal can configure the reference signal for cross-time unit transmission or repetition in response to the notification indication information from the base station.

[0039] Among them, the notification indication information includes a start notification indication of the DMRS-less (reducing the density of the demodulation reference signal) mode. It can be understood that the terminal can also start the DMRS-less mode in response to the start notification indication of the DMRS-less mode to enhance coverage by reducing the density of the demodulation reference signal.

[0040] Optionally, the reference signal configuration parameters are determined by at least one of the following methods: determining the reference signal configuration parameters based on control signaling from the base station, or determining the reference signal configuration parameters according to a communication protocol or pre-configuration.

[0041] Optionally, the configuration parameters of the reference signal include at least one of the following parameters: the time-domain density of the reference signal, the frequency-domain density of the reference signal, the starting time-domain offset, and the starting frequency-domain offset.

[0042] It can be understood that the time-domain density, the frequency-domain density, the starting time-domain offset, and the starting frequency-domain offset can all be set according to the actual situation. For example, the starting time-domain offset of the reference signal transmission in the time units occupied by cross-time-unit transmission or retransmission is determined based on the first time-domain symbol occupied in the first time unit occupied by the cross-time-unit transmission or retransmission, and the starting frequency-domain offset of the reference signal transmission in the time units occupied by cross-time-unit transmission or retransmission is determined based on the first frequency-domain resource unit occupied in the first time unit occupied by the cross-time-unit transmission or retransmission.

[0043] Optionally, configuring the reference signal transmission for cross-time-unit transmission or retransmission includes configuring the reference signal transmission within at least some of the time units occupied by the cross-time-unit transmission or retransmission, where at least one of the partial time units does not include DMRS transmission. That is to say, the reference signal transmission can be discontinuous in the time domain, which is beneficial to reducing the number of reference signals and increasing the transmission of data information, thereby improving the coverage performance.

[0044] Optionally, configuring the reference signal transmission for cross-time-unit transmission or retransmission includes determining not to configure the reference signal transmission for cross-time-unit transmission or retransmission based on the modulation and coding strategy (MCS) level. It can be understood that if the current MCS level can tolerate the phase deviation caused by cross-time-unit or retransmission, it can be determined not to configure the reference signal transmission for cross-time-unit transmission or retransmission. Thus, this method can take into account the influence of the MCS level on the configuration of the reference signal transmission for cross-time-unit transmission or retransmission, which is relatively flexible.

[0045] It should be noted that in the embodiments of the present application, the frequency band in which the terminal operates is not limited. For example, the terminal can operate in the FR1 frequency band specified by the communication protocol. In addition, the time unit includes but is not limited to a slot, a transmission time interval (TTI), etc., and will not be further limited here. In addition, the type of the channel where the time unit is located is not restricted either. For example, the time unit can be a time unit within a physical uplink shared channel (PUSCH), or can also be a time unit within a physical uplink control channel (PUCCH), etc.

[0046] According to the communication method of the embodiments of the present application, the terminal configures reference signal transmission for cross-time unit transmission or retransmission based on reference signal configuration parameters. The reference signal is used for phase estimation, and the frequency-domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal (DMRS) transmission. Thus, the terminal can perform phase tracking and calibration based on the reference signal, and can solve the problem in the related art that the phase cannot be accurately tracked when the coverage is enhanced by reducing the density of the demodulation reference signal, which is beneficial to ensuring the correctness of demodulation and improving the transmission performance.

[0047] Figure 3 The flowchart of another communication method provided by the embodiments of the present application is executed by the terminal. As Figure 3 shown, the communication method includes the following steps:

[0048] S201, based on reference signal configuration parameters, receive reference signal transmission for cross-time unit transmission or retransmission from the base station. The reference signal is used for phase estimation, and the frequency-domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal (DMRS) transmission.

[0049] In the embodiments of the present application, the terminal can receive reference signal transmission for cross-time unit transmission or retransmission from the base station based on reference signal configuration parameters. The reference signal is used for phase estimation, and the frequency-domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal (DMRS) transmission. Thus, the terminal can perform phase tracking and calibration based on the received reference signal transmission, and can solve the problem in the related art that the phase cannot be accurately tracked when the coverage is enhanced by reducing the density of the demodulation reference signal, which is beneficial to ensuring the correctness of demodulation and improving the transmission performance.

[0050] Optionally, configuring reference signal transmission for cross-time unit transmission or retransmission includes configuring reference signal transmission within at least some of the time units occupied by the cross-time unit transmission or retransmission, where at least one of the partial time units does not include DMRS transmission. That is to say, the reference signal transmission can be discontinuous in the time domain, which is beneficial to reducing the number of reference signals, increasing the transmission of data information, and thus improving the coverage performance.

[0051] According to the communication method of the embodiments of the present application, the terminal receives reference signal transmission for cross-time unit transmission or retransmission from the base station based on reference signal configuration parameters. The reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal (DMRS) transmission. Thus, the terminal can achieve phase tracking and calibration according to the received reference signal transmission, which can solve the problem in the related art that the phase cannot be accurately tracked when the coverage is enhanced by reducing the density of the demodulation reference signal, is beneficial to ensuring the correctness of demodulation, and improves the transmission performance.

[0052] Figure 4 The flowchart of another communication method provided by the embodiments of the present application is executed by the base station. As Figure 4 shown, the communication method includes the following steps:

[0053] S301, configure reference signal transmission for cross-time unit transmission or retransmission based on reference signal configuration parameters. The reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal (DMRS) transmission.

[0054] According to the communication method of the embodiments of the present application, the base station can configure reference signal transmission for cross-time unit transmission or retransmission based on reference signal configuration parameters. The reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal (DMRS) transmission. Thus, the base station can achieve phase tracking and calibration according to the reference signal transmission, which can solve the problem in the related art that the phase cannot be accurately tracked when the coverage is enhanced by reducing the density of the demodulation reference signal, is beneficial to ensuring the correctness of demodulation, and improves the transmission performance.

[0055] Figure 5 The flowchart of another communication method provided by the embodiments of the present application is executed by the base station or the terminal. As Figure 5 shown, the communication method includes the following steps:

[0056] S401, for two adjacent time units in cross-time unit transmission or retransmission, configure signal transmission in the last symbol of the first time unit and the first symbol of the second time unit respectively. The signal transmission is used for phase estimation.

[0057] In the embodiments of the present application, a base station or a terminal may configure signal transmissions respectively in the last symbol of the first time unit and the first symbol of the second time unit for two adjacent time units in cross-time-unit transmission or retransmission. The signal transmissions are used for phase estimation. That is to say, signal transmissions may be configured respectively on the time-domain edge symbols of two adjacent time units. Thus, signal transmissions are configured on both of the two adjacent time units, and phase estimation can be performed respectively using their own signal transmissions, which can solve the problem of discontinuous phase of the same transport block (TBS) in cross-time-unit transmission, is beneficial to ensuring the correctness of demodulation, and improves the transmission performance.

[0058] Optionally, the signal transmission is the transmission of the same service data or the transmission of the demodulation reference signal DMRS.

[0059] According to the communication method of the embodiments of the present application, a base station or a terminal may configure signal transmissions respectively in the last symbol of the first time unit and the first symbol of the second time unit for two adjacent time units in cross-time-unit transmission or retransmission. The signal transmissions are used for phase estimation. Thus, signal transmissions are configured on both of the two adjacent time units, and phase estimation can be performed respectively using their own signal transmissions, which can solve the problem of discontinuous phase of the same transport block in cross-time-unit transmission, is beneficial to ensuring the correctness of demodulation, and improves the transmission performance.

[0060] Figure 6 It is a schematic flowchart of another communication method provided by the embodiments of the present application, which is executed by a base station or a terminal. As Figure 6 shown, the communication method includes the following steps:

[0061] S501, for two adjacent time units in cross-time-unit transmission or retransmission, receive signal transmissions respectively in the last symbol of the first time unit and the first symbol of the second time unit.

[0062] S502, perform phase estimation based on the signal transmissions.

[0063] Optionally, the signal transmission is the transmission of the same service data or the transmission of the demodulation reference signal DMRS.

[0064] According to the communication method of the embodiments of the present application, a base station or a terminal can receive signal transmissions respectively in the last symbol of the first time unit and the first symbol of the second time unit for adjacent two time units in cross-time unit transmission or retransmission, and perform phase estimation based on the signal transmissions. Thus, signal transmissions are configured on both adjacent two time units, and phase estimation can be respectively performed using their own signal transmissions, which can solve the problem of discontinuous phase of the same transmission resource block in cross-time unit transmission, is beneficial to ensuring the correctness of demodulation, and improves the transmission performance.

[0065] Corresponding to the communication methods provided in the above several embodiments, the present application further provides a communication device, and the communication device is applied to a terminal. Since the communication device provided in the embodiments of the present application corresponds to the Figure 1 communication method provided in the above embodiments, the implementation manners of the communication method are also applicable to the communication device provided in this embodiment, and will not be described in detail in this embodiment.

[0066] The communication device of the embodiments of the present application is applied to a terminal, and the communication device includes: a first configuration module, configured to configure reference signal transmission for cross-time unit transmission or retransmission based on reference signal configuration parameters, where the reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than the frequency domain resources occupied by the demodulation reference signal DMRS transmission.

[0067] The communication device of the embodiments of the present application configures reference signal transmission for cross-time unit transmission or retransmission based on reference signal configuration parameters. The reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than the frequency domain resources occupied by the demodulation reference signal DMRS transmission. Thus, the device can implement phase tracking and calibration according to the reference signal, which can solve the problem that in the related art, when using the method of reducing the density of the demodulation reference signal for coverage enhancement, the phase cannot be accurately tracked, is beneficial to ensuring the correctness of demodulation, and improves the transmission performance.

[0068] Corresponding to the communication methods provided in the above several embodiments, the present application further provides a communication device, and the communication device is applied to a terminal. Since the communication device provided in the embodiments of the present application corresponds to the Figure 3 communication method provided in the above embodiments, the implementation manners of the communication method are also applicable to the communication device provided in this embodiment, and will not be described in detail in this embodiment.

[0069] The communication device according to the embodiment of the present application is applied to a terminal. The communication device includes: a receiving module, configured to receive a reference signal transmission for phase estimation for cross-time unit transmission or retransmission from a base station based on reference signal configuration parameters, where the frequency domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal (DMRS) transmission.

[0070] The communication device according to the embodiment of the present application receives a reference signal transmission for cross-time unit transmission or retransmission from a base station based on reference signal configuration parameters. The reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal (DMRS) transmission. Thus, the device can implement phase tracking and calibration according to the received reference signal transmission, and can solve the problem in the related art that when using the method of reducing the density of the demodulation reference signal for coverage enhancement, the phase cannot be accurately tracked, which is beneficial to ensuring the correctness of demodulation and improving the transmission performance.

[0071] Corresponding to the communication methods provided in the above several embodiments, the present application further provides a communication device. The communication device is applied to a terminal. Since the communication device provided in the embodiment of the present application corresponds to the Figure 4 communication method provided in the above embodiment, the implementation manners of the communication method are also applicable to the communication device provided in this embodiment, and will not be described in detail in this embodiment.

[0072] The communication device according to the embodiment of the present application is applied to a base station. The communication device includes: a second configuration module, configured to configure a reference signal transmission for cross-time unit transmission or retransmission based on reference signal configuration parameters, where the reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal (DMRS) transmission.

[0073] The communication device according to the embodiment of the present application can configure a reference signal transmission for cross-time unit transmission or retransmission based on reference signal configuration parameters. The reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal (DMRS) transmission. Thus, the device can implement phase tracking and calibration according to the reference signal transmission, and can solve the problem in the related art that when using the method of reducing the density of the demodulation reference signal for coverage enhancement, the phase cannot be accurately tracked, which is beneficial to ensuring the correctness of demodulation and improving the transmission performance.

[0074] Corresponding to the communication methods provided in the above several embodiments, the present application further provides a communication device. The communication device is applied to a terminal. Since the communication device provided in the embodiment of the present application corresponds to the Figure 5The communication method provided by the embodiment is corresponding, so the implementation manners of the communication method are also applicable to the communication device provided by this embodiment and will not be described in detail in this embodiment.

[0075] The communication device according to an embodiment of the present application includes: a third configuration module configured to respectively configure signal transmissions in the last symbol of the first time unit and the first symbol of the second time unit for adjacent two time units in cross-time unit transmission or retransmission, where the signal transmissions are used for phase estimation.

[0076] The communication device according to an embodiment of the present application can respectively configure signal transmissions in the last symbol of the first time unit and the first symbol of the second time unit for adjacent two time units in cross-time unit transmission or retransmission, and the signal transmissions are used for phase estimation. Thus, signal transmissions are configured on both adjacent two time units, and phase estimation can be respectively performed by using their own signal transmissions, which can solve the problem of discontinuous phase of the same transmission resource block in cross-time unit transmission, is beneficial to ensuring the correctness of demodulation, and improves the transmission performance.

[0077] Corresponding to the communication methods provided by the above several embodiments, the present application further provides a communication device, and the communication device is applied to a terminal. Since the communication device provided by the embodiment of the present application corresponds to the Figure 6 communication method provided by the above embodiment, the implementation manners of the communication method are also applicable to the communication device provided by this embodiment and will not be described in detail in this embodiment.

[0078] The communication device according to an embodiment of the present application includes: a second receiving module configured to respectively receive signal transmissions in the last symbol of the first time unit and the first symbol of the second time unit for adjacent two time units in cross-time unit transmission or retransmission; an estimation module configured to perform phase estimation based on the signal transmissions.

[0079] The communication device according to an embodiment of the present application can respectively receive signal transmissions in the last symbol of the first time unit and the first symbol of the second time unit for adjacent two time units in cross-time unit transmission or retransmission, and perform phase estimation based on the signal transmissions. Thus, signal transmissions are configured on both adjacent two time units, and phase estimation can be respectively performed by using their own signal transmissions, which can solve the problem of discontinuous phase of the same transmission resource block in cross-time unit transmission, is beneficial to ensuring the correctness of demodulation, and improves the transmission performance.

[0080] According to an embodiment of the present application, the present application further provides a terminal including the communication device provided by the embodiment of the present application.

[0081] The terminal according to the embodiment of the present application configures reference signal transmission for cross-time unit transmission or retransmission based on reference signal configuration parameters. The reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal (DMRS) transmission. Thus, the terminal can achieve phase tracking and calibration according to the reference signal, and can solve the problem in the related art that the phase cannot be accurately tracked when the method of reducing the density of the demodulation reference signal is used for coverage enhancement, which is beneficial to ensuring the correctness of demodulation and improving the transmission performance.

[0082] According to an embodiment of the present application, the present application further provides a base station, including the communication device provided by the embodiment of the present application.

[0083] The base station according to the embodiment of the present application can configure reference signal transmission for cross-time unit transmission or retransmission based on reference signal configuration parameters. The reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal (DMRS) transmission. Thus, the base station can achieve phase tracking and calibration according to the reference signal transmission, and can solve the problem in the related art that the phase cannot be accurately tracked when the method of reducing the density of the demodulation reference signal is used for coverage enhancement, which is beneficial to ensuring the correctness of demodulation and improving the transmission performance.

[0084] According to an embodiment of the present application, the present application further provides an electronic device and a readable storage medium.

[0085] As Figure 7 shown, it is a block diagram of an electronic device according to an embodiment of the present application. The electronic device is intended to represent various forms of digital computers, such as, a laptop computer, a desktop computer, a workbench, a personal digital assistant, a server, a blade server, a mainframe computer, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as, a personal digital processor, a cellular phone, a smart phone, a wearable device, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are only examples and are not intended to limit the implementation of the present application described and / or claimed herein.

[0086] As Figure 7As shown, the electronic device includes: one or more processors 1100, a memory 1200, and interfaces for connecting various components, including a high-speed interface and a low-speed interface. Each component is interconnected using different buses and can be mounted on a common motherboard or installed in other ways as needed. The processor can process instructions executed within the electronic device, including instructions stored in the memory or on the memory for displaying graphical information of a GUI on an external input / output device (such as a display device coupled to the interface). In other embodiments, if needed, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple electronic devices can be connected, with each device providing part of the necessary operations (such as an array of servers, a set of blade servers, or a multi-processor system). Figure 7 Here, one processor 1100 is taken as an example.

[0087] The memory 1200 is the non-transitory computer-readable storage medium provided by this application. Among them, the memory stores instructions executable by at least one processor, enabling the at least one processor to execute the communication method provided by this application. The non-transitory computer-readable storage medium of this application stores computer instructions for causing a computer to execute the communication method provided by this application.

[0088] As a non-transitory computer-readable storage medium, the memory 1200 can be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as the program instructions / modules corresponding to the communication method in the embodiments of this application (for example, the first configuration module 110 shown in the appendix). Figure 4 By running the non-transitory software programs, instructions, and modules stored in the memory 1200, the processor 1100 thus executes various functional applications and data processing of the server, that is, implements the communication method in the above method embodiments.

[0089] The memory 1200 can include a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created according to the use of the positioning electronic device, etc. In addition, the memory 1200 can include high-speed random access memory and can also include non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. Optionally, the memory 1200 can optionally include memories remotely set relative to the processor 1100, and these remote memories can be connected to the positioning electronic device through a network. Examples of the above network include but are not limited to the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0090] The electronic device may further include: an input device 1300 and an output device 1400. The processor 1100, the memory 1200, the input device 1300, and the output device 1400 may be connected via a bus or other means. Figure 7 Taking the connection via the bus as an example.

[0091] The input device 1300 can receive input digital or character information, and generate key signal inputs related to the user settings and function controls for positioning the electronic device, such as input devices like touchscreens, keypads, mice, trackpads, touchpads, pointing sticks, one or more mouse buttons, trackballs, joysticks, etc. The output device 1400 may include a display device, an auxiliary lighting device (e.g., LED), and a haptic feedback device (e.g., a vibration motor), etc. The display device may include, but is not limited to, a liquid crystal display (LCD), a light-emitting diode (LED) display, and a plasma display. In some embodiments, the display device may be a touchscreen.

[0092] Various embodiments of the systems and techniques described herein can be implemented in digital electronic circuit systems, integrated circuit systems, dedicated ASICs (application-specific integrated circuits), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include: implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a dedicated or general-purpose programmable processor, and can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit the data and instructions to the storage system, the at least one input device, and the at least one output device.

[0093] These computing programs (also referred to as programs, software, software applications, or code) include machine instructions for a programmable processor, and these computing programs can be implemented using high-level procedural and / or object-oriented programming languages, and / or assembly / machine languages. As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, device, and / or apparatus (e.g., disks, optical disks, memories, programmable logic devices (PLDs)) for providing machine instructions and / or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal for providing machine instructions and / or data to a programmable processor.

[0094] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the computer. Other kinds of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, speech input, or tactile input).

[0095] The systems and techniques described herein can be implemented in a computing system including backend components (e.g., as a data server), or a computing system including middleware components (e.g., an application server), or a computing system including frontend components (e.g., a user computer having a graphical user interface or a web browser through which the user can interact with an implementation of the systems and techniques described herein), or a computing system including any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected by digital data communication in any form or medium (e.g., a communication network). Examples of communication networks include: local area network (LAN), wide area network (WAN), and the Internet.

[0096] A computer system can include a client and a server. The client and the server are generally far from each other and typically interact through a communication network. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other.

[0097] According to the communication method of an embodiment of the present application, a terminal configures reference signal transmission for cross-time unit transmission or retransmission based on reference signal configuration parameters. The reference signal is used for phase estimation, and the frequency domain resources occupied by the reference signal transmission are less than those occupied by the demodulation reference signal (DMRS) transmission. Thus, the terminal can implement phase tracking and calibration based on the reference signal, and can solve the problem in the related art that when the method of reducing the density of the demodulation reference signal is used for coverage enhancement, the phase cannot be accurately tracked, which is beneficial to ensuring the correctness of demodulation and improving the transmission performance.

[0098] It should be understood that various forms of the processes shown above can be used, steps can be reordered, added, or deleted. For example, the steps recited in this application can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in this application can be achieved, and no limitation is imposed herein.

Claims

1. A communication method, comprising: For two adjacent time units in cross-time unit transmission or retransmission, signal transmissions are respectively configured in the last symbol of the first time unit and the first symbol of the second time unit, and the signal transmissions are used for phase estimation.

2. The method according to claim 1, wherein The signal transmission is the transmission of the same service data or the transmission of the demodulation reference signal DMRS.

3. A communication method, comprising: For two adjacent time units in cross-time unit transmission or retransmission, signal transmissions are respectively received in the last symbol of the first time unit and the first symbol of the second time unit; Phase estimation is performed based on the signal transmission.

4. The method according to claim 3, wherein, The signal transmission is the transmission of the same service data or the transmission of the demodulation reference signal DMRS.

5. A communication device, comprising: A third configuration module, configured to respectively configure signal transmissions in the last symbol of the first time unit and the first symbol of the second time unit for two adjacent time units in cross-time unit transmission or retransmission, and the signal transmissions are used for phase estimation.

6. A communication device, comprising: A second receiving module, configured to respectively receive signal transmissions in the last symbol of the first time unit and the first symbol of the second time unit for two adjacent time units in cross-time unit transmission or retransmission; An estimation module, configured to perform phase estimation based on the signal transmission.

7. A terminal, characterized in that, Comprising: The communication device according to claim 5, or the communication device according to claim 6.

8. A base station, characterized in that, Comprising: The communication device according to claim 5, or the communication device according to claim 6.

9. An electronic device, characterized in that, Comprising: At least one processor; And A memory communicatively connected to the at least one processor; wherein, The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the communication method according to any one of claims 1-2, or the communication method according to any one of claims 3-4.

10. A computer-readable storage medium storing computer instructions, characterized in that, The computer instructions are used to cause the computer to execute the communication method according to any one of claims 1-2, or the communication method according to any one of claims 3-4.

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