WO2025035304A1 - 通信方法和装置、通信设备及存储介质 - Google Patents

通信方法和装置、通信设备及存储介质 Download PDF

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Publication number
WO2025035304A1
WO2025035304A1 PCT/CN2023/112704 CN2023112704W WO2025035304A1 WO 2025035304 A1 WO2025035304 A1 WO 2025035304A1 CN 2023112704 W CN2023112704 W CN 2023112704W WO 2025035304 A1 WO2025035304 A1 WO 2025035304A1
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WIPO (PCT)
Prior art keywords
downlink
domain density
ports
downlink ptrs
ptrs
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PCT/CN2023/112704
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English (en)
French (fr)
Inventor
朱亚军
洪伟
卢依一
李勇
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to PCT/CN2023/112704 priority Critical patent/WO2025035304A1/zh
Priority to CN202380010632.3A priority patent/CN119923818A/zh
Publication of WO2025035304A1 publication Critical patent/WO2025035304A1/zh
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a communication method and apparatus, communication equipment and storage medium.
  • the millimeter wave band has a huge available bandwidth, can provide extremely high transmission rates, and has a short wavelength, which is conducive to the integration of antenna elements. These advantages make the research of millimeter wave wireless communication technology very popular. However, millimeter waves also have obvious defects, such as being easily blocked by obstacles and being very sensitive to phase noise (PN).
  • PN phase noise
  • the network device indicates the number of downlink phase tracking reference signal (PTRS) ports to the terminal, so that the terminal can determine the corresponding PTRS time-frequency domain density configuration based on the number of PTRS ports, thereby achieving accurate estimation and compensation of PN and improving the overall system performance.
  • PTRS downlink phase tracking reference signal
  • a communication method which is executed by a network device, and the method includes: sending configuration information, where the configuration information is used to indicate the number of downlink PTRS ports, and the downlink PTRS is used to estimate and compensate for the PN generated by a local oscillator used by at least one RF chain.
  • a communication method which is executed by a terminal, and the method includes: receiving configuration information, the configuration information is used to indicate the number of downlink PTRS ports; based on the number of downlink PTRS ports, determining the time-frequency domain density configuration of the downlink PTRS; wherein the downlink PTRS is used to estimate and compensate for the PN generated by the local oscillator used by at least one RF chain.
  • a communication device which can be applied to a network device, and the communication device includes: a sending module, configured to send configuration information, the configuration information is used to indicate the number of downlink PTRS ports, and the downlink PTRS is used to estimate and compensate for the PN generated by a local oscillator used by at least one RF chain.
  • a communication device which can be applied to a terminal, and the communication device includes: a receiving module, configured to receive configuration information, the configuration information is used to indicate the number of downlink PTRS ports; a processing module, configured to determine the time-frequency domain density configuration of the downlink PTRS based on the number of downlink PTRS ports; wherein the downlink PTRS is used to estimate and compensate for the PN generated by a local oscillator used by at least one RF chain.
  • a communication device such as a network device or a terminal.
  • the communication device comprises: at least one processor; a memory coupled to the at least one processor, the memory storing executable instructions, and when the executable instructions are executed by the at least one processor, the communication device executes the method described in any one of the first aspect, the second aspect, and the embodiments thereof.
  • a storage medium wherein instructions are stored in the storage medium, and when the instructions are executed in a communication device, the communication device executes the method as described in any one of the first aspect, the second aspect and the embodiments thereof.
  • the storage medium stores instructions. When the instructions are executed by the processor, the method described in any one of the first aspect, the second aspect and the embodiments thereof is performed.
  • a computer program or a computer program product includes code.
  • the instructions are executed by a processor, the method as described in any one of the first aspect, the second aspect and the embodiments thereof is executed.
  • the embodiments of the present disclosure can be used to accurately estimate and compensate PN.
  • FIG1 is a schematic diagram of an architecture of a communication system provided according to an embodiment of the present disclosure.
  • FIG2 is a schematic diagram of an OFDM system affected by PN in a centralized local oscillator architecture according to an embodiment of the present disclosure.
  • FIG3 is a schematic diagram of an OFDM system affected by PN under a distributed local oscillator architecture according to an embodiment of the present disclosure.
  • FIG. 4 is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure.
  • FIG5A is a schematic diagram of a structure of a network device provided according to an embodiment of the present disclosure.
  • FIG5B is another schematic diagram of the structure of a network device provided according to an embodiment of the present disclosure.
  • FIG. 6 is an exemplary flowchart of a communication method performed on a network device side according to an embodiment of the present disclosure.
  • FIG. 7 is an exemplary flowchart of a communication method performed by a terminal side according to an embodiment of the present disclosure.
  • FIG8 is an exemplary structural diagram of a communication device provided according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of a structure of a communication device provided according to an embodiment of the present disclosure.
  • Embodiments of the present disclosure provide a communication method and apparatus, a communication device, and a storage medium.
  • the present disclosure provides a communication method, which is performed by a network device, and the method includes: sending configuration information, configuring the information Used to indicate the number of downlink PTRS ports.
  • the downlink PTRS is used to estimate and compensate for the PN generated by the local oscillator used by at least one radio frequency chain.
  • the network device indicates the number of downlink PTRS ports to the terminal, so that the terminal can determine the time-frequency domain density configuration of the corresponding downlink PTRS according to the number of downlink PTRS ports.
  • the time-frequency domain density configuration at this time is more conducive to the terminal to accurately estimate and compensate for PN, thereby improving the overall performance of the system.
  • the configuration information includes at least one of the following: the maximum number of downlink PTRS ports; the number of transmission configuration indication (TCI) states; the number of code division multiplexing (CDM) groups corresponding to demodulation reference signal (DMRS) ports.
  • TCI transmission configuration indication
  • CDM code division multiplexing
  • sending configuration information includes at least one of the following: sending downlink PTRS configuration information, the downlink PTRS configuration information includes the maximum number of downlink PTRS ports and/or the number of CDM groups corresponding to the DMRS ports; sending downlink control information (downlink control information, DCI), DCI is used to indicate the number of TCI states.
  • the number of downlink PTRS ports is 1 or N, where N is an integer greater than or equal to 2.
  • the maximum number of downstream PTRS ports is configured to be 1, the number of downstream PTRS ports is 1.
  • the maximum number of downlink PTRS ports when the maximum number of downlink PTRS ports is configured to N and N is equal to 2, when the number of TCI states is equal to 2 and the number of CDM groups corresponding to the DMRS ports is equal to 2, the number of downlink PTRS ports is 2; or, when the number of TCI states is equal to 1 and/or the number of CDM groups corresponding to the DMRS ports is equal to 1, the number of downlink PTRS ports is 1.
  • the two downlink PTRS ports are respectively associated with the lowest index DMRS ports in the two DMRS port groups indicating the TCI state.
  • the number of downlink PTRS ports is 1 corresponding to a first time-frequency domain density configuration; the number of downlink PTRS ports is N corresponding to a second time-frequency domain density configuration.
  • the second time-frequency domain density configuration includes: time domain density and frequency domain density; the value of the time domain density is one of the following: 6, 4, 2; the value of the frequency domain density is one of the following: 1, 2.
  • the second time-frequency domain density configuration includes at least one of the following: the modulation and coding scheme (MCS) of the downlink PTRS scheduling is greater than or equal to the first MCS threshold and less than the second MCS threshold, and the time domain density value is 6; the MCS of the downlink PTRS scheduling is greater than or equal to the second MCS threshold and less than the third MCS threshold, and the time domain density value is 4; the MCS of the downlink PTRS scheduling is greater than or equal to the third MCS threshold and less than the fourth MCS threshold, and the time domain density value is 2.
  • MCS modulation and coding scheme
  • the second time-frequency domain density configuration includes at least one of the following: the bandwidth of the downlink PTRS scheduling is greater than or equal to the first bandwidth threshold and less than the second bandwidth threshold, and the value of the frequency domain density is 1; the bandwidth of the downlink PTRS scheduling is greater than or equal to the second bandwidth threshold and less than the third bandwidth threshold, and the value of the frequency domain density is 2.
  • the present disclosure implements a communication method, which is executed by a terminal, and the method includes: receiving configuration information, the configuration information is used to indicate the number of downlink PTRS ports; based on the number of downlink PTRS ports, determining the time-frequency domain density configuration of the downlink PTRS; wherein the downlink PTRS is used to estimate and compensate for the PN generated by the local oscillator used by at least one RF chain.
  • the configuration information includes at least one of the following: the maximum number of downlink PTRS ports; the number of TCI states; the number of code CDM groups corresponding to the DMRS ports.
  • receiving configuration information includes at least one of the following: receiving downlink PTRS configuration information, the downlink PTRS configuration information includes the maximum number of downlink PTRS ports and/or the number of CDM groups corresponding to the DMRS ports; receiving DCI, the DCI includes the number of TCI states.
  • the number of downlink PTRS ports is 1 or N, where N is an integer greater than or equal to 2.
  • the maximum number of downlink PTRS ports is configured to be 1
  • the number of downlink PTRS ports is configured to be 1.
  • the maximum number of downlink PTRS ports when the maximum number of downlink PTRS ports is configured to N and N is equal to 2, when the number of TCI states is equal to 2 and the number of CDM groups corresponding to the DMRS ports is equal to 2, the number of downlink PTRS ports is 2; or, when the number of TCI states is equal to 1 and/or the number of CDM groups corresponding to the DMRS ports is equal to 1, the number of downlink PTRS ports is 1.
  • the two downlink PTRS ports are respectively associated with the lowest index DMRS ports in the two DMRS port groups indicating the TCI state.
  • the time-frequency of the downlink PTRS is determined based on the number of downlink PTRS ports.
  • the domain density configuration includes: when the number of downlink PTRS ports is 1, determining the time-frequency domain density configuration as the first time-frequency domain density configuration; or, when the number of downlink PTRS ports is N, determining the time-frequency domain density configuration as the second time-frequency domain density configuration.
  • the time-frequency domain density configuration range of the downlink PTRS required by the terminal for PN estimation and compensation is different.
  • PN elimination also known as estimation and compensation
  • the distributed local oscillator architecture since the phase deflections caused by the new interference items on different subcarriers are different, only CPE cannot be eliminated, so PN elimination requires a larger frequency domain density of PTRS, while the time domain density can be reduced due to the shortening of the symbol length.
  • the second time-frequency domain density configuration includes: time domain density and frequency domain density; the value of the time domain density is one of the following: 6, 4, 2; the value of the frequency domain density is one of the following: 1, 2.
  • the second time-frequency domain density configuration includes at least one of the following: the MCS of the downlink PTRS scheduling is greater than or equal to the first MCS threshold and less than the second MCS threshold, and the time domain density value is 6; the MCS of the downlink PTRS scheduling is greater than or equal to the second MCS threshold and less than the third MCS threshold, and the time domain density value is 4; the MCS of the downlink PTRS scheduling is greater than or equal to the third MCS threshold and less than the fourth MCS threshold, and the time domain density value is 2.
  • the present disclosure implements a communication device that can be applied to a network device, and the communication device includes: a sending module, configured to send configuration information, the configuration information is used to indicate the number of downlink PTRS ports, and the downlink PTRS is used to estimate and compensate for the PN generated by a local oscillator used by at least one RF chain.
  • a sending module configured to send configuration information
  • the configuration information is used to indicate the number of downlink PTRS ports
  • the downlink PTRS is used to estimate and compensate for the PN generated by a local oscillator used by at least one RF chain.
  • the configuration information includes at least one of the following: the maximum number of downlink PTRS ports; the number of TCI states; the number of CDM groups corresponding to the DMRS ports.
  • the sending module is configured to perform at least one of the following: sending downlink PTRS configuration information, the downlink PTRS configuration information including the maximum number of downlink PTRS ports and/or the number of CDM groups corresponding to the DMRS ports; sending DCI, DCI is used to indicate the number of TCI states.
  • the number of downlink PTRS ports is 1 or N, where N is an integer greater than or equal to 2.
  • the maximum number of downstream PTRS ports is configured to be 1, the number of downstream PTRS ports is 1.
  • the maximum number of downlink PTRS ports when the maximum number of downlink PTRS ports is configured to N and N is equal to 2, when the number of TCI states is equal to 2 and the number of CDM groups corresponding to the DMRS ports is equal to 2, the number of downlink PTRS ports is 2; or, when the number of TCI states is equal to 1 and/or the number of CDM groups corresponding to the DMRS ports is equal to 1, the number of downlink PTRS ports is 1.
  • the two downlink PTRS ports are respectively associated with the lowest index DMRS ports in the two DMRS port groups indicating the TCI state.
  • the number of downlink PTRS ports is 1 corresponding to a first time-frequency domain density configuration; or, the number of downlink PTRS ports is N corresponding to a second time-frequency domain density configuration.
  • the second time-frequency domain density configuration includes: time domain density and frequency domain density; the value of the time domain density is one of the following: 6, 4, 2; the value of the frequency domain density is one of the following: 1, 2.
  • the second time-frequency domain density configuration includes at least one of the following: the MCS of the downlink PTRS scheduling is greater than or equal to the first MCS threshold and less than the second MCS threshold, and the time domain density value is 6; the MCS of the downlink PTRS scheduling is greater than or equal to the second MCS threshold and less than the third MCS threshold, and the time domain density value is 4; the MCS of the downlink PTRS scheduling is greater than or equal to the third MCS threshold and less than the fourth MCS threshold, and the time domain density value is 2.
  • the second time-frequency domain density configuration includes at least one of the following: the bandwidth of the downlink PTRS scheduling is greater than or equal to the first bandwidth threshold and less than the second bandwidth threshold, and the value of the frequency domain density is 1; the bandwidth of the downlink PTRS scheduling is greater than or equal to the second bandwidth threshold and less than the third bandwidth threshold, and the value of the frequency domain density is 2.
  • the configuration information includes at least one of the following: the maximum number of downlink PTRS ports; the number of TCI states; the number of code CDM groups corresponding to the DMRS ports.
  • the receiving module is configured to perform at least one of the following: receiving downlink PTRS configuration information, the downlink PTRS configuration information including the maximum number of downlink PTRS ports and/or the number of CDM groups corresponding to the DMRS ports; receiving DCI, the DCI including the number of TCI states.
  • the number of downlink PTRS ports is 1 or N, where N is an integer greater than or equal to 2.
  • the number of downlink PTRS ports is configured to be 1.
  • the maximum number of downlink PTRS ports is configured to N and N is equal to 2, when the number of TCI states is equal to 2 and the number of CDM groups corresponding to the DMRS ports is equal to 2, the number of downlink PTRS ports is 2; or, when the number of TCI states is equal to 1 and/or the number of CDM groups corresponding to the DMRS ports is equal to 1, the number of downlink PTRS ports is 1.
  • the two downlink PTRS ports are respectively associated with the lowest index DMRS ports in the two DMRS port groups indicating the TCI state.
  • the processing module is configured to, when the number of downstream PTRS ports is 1, determine that the time-frequency domain density configuration is the first time-frequency domain density configuration; or, when the number of downstream PTRS ports is N, determine that the time-frequency domain density configuration is the second time-frequency domain density configuration.
  • the second time-frequency domain density configuration includes: time domain density and frequency domain density; the value of the time domain density is one of the following: 6, 4, 2; the value of the frequency domain density is one of the following: 1, 2.
  • the second time-frequency domain density configuration includes at least one of the following: the MCS of the downlink PTRS scheduling is greater than or equal to the first MCS threshold and less than the second MCS threshold, and the time domain density value is 6; the MCS of the downlink PTRS scheduling is greater than or equal to the second MCS threshold and less than the third MCS threshold, and the time domain density value is 4; the MCS of the downlink PTRS scheduling is greater than or equal to the third MCS threshold and less than the fourth MCS threshold, and the time domain density value is 2.
  • the second time-frequency domain density configuration includes at least one of the following: the bandwidth of the downlink PTRS scheduling is greater than or equal to the first bandwidth threshold and less than the second bandwidth threshold, and the value of the frequency domain density is 1; the bandwidth of the downlink PTRS scheduling is greater than or equal to the second bandwidth threshold and less than the third bandwidth threshold, and the value of the frequency domain density is 2.
  • an embodiment of the present disclosure provides a communication device, such as a terminal or a network device.
  • the communication device includes: at least one processor; a memory coupled to the at least one processor, the memory storing executable instructions, and when the executable instructions are executed by the at least one processor, the communication device executes the method as described in any one of the first aspect, the second aspect, and the embodiments thereof.
  • an embodiment of the present disclosure provides a storage medium.
  • the storage medium stores instructions.
  • the communication device executes the method as described in any one of the first aspect, the second aspect, and the embodiments thereof.
  • a computer program or a computer program product comprises code.
  • the instructions are executed by a processor, the method as described in any one of the first aspect, the second aspect and the embodiments thereof is performed.
  • the embodiments of the present disclosure provide a communication method and apparatus, a communication device and a storage medium.
  • the terms such as the communication method and the PTRS configuration method, the method for determining the PTRS time-frequency resource density configuration, and the information processing method can be interchangeable, and the terms such as the communication device and the PTRS configuration device and the information processing device can be interchangeable.
  • each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined.
  • a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged.
  • the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined, for example, some or all of the steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.
  • elements expressed in the singular form such as “a”, “an”, “a kind of”, “the”, “above”, “said”, “aforementioned”, “this”, etc., may mean “one and only one", or “one or more”, “at least one”, etc.
  • the noun after the article may be understood as a singular expression or a plural expression.
  • plurality refers to two or more.
  • the terms “at least one”, “one or more”, etc. can be used interchangeably.
  • "at least one of A and B", “A and/or B”, “A in one case, B in another case”, “A in one case, B in another case”, etc. may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). When there are more branches such as A, B, C, etc., the above is also similar.
  • the recording method of "A or B” may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed).
  • A A is executed independently of B
  • B B is executed independently of A
  • execution is selected from A and B (A and B are selectively executed).
  • prefixes such as “first” and “second” in the embodiments of the present disclosure are only used to distinguish different description objects, and do not constitute restrictions on the position, order, priority, quantity or content of the description objects.
  • the statement of the description object refers to the description in the context of the claims or embodiments, and should not constitute unnecessary restrictions due to the use of prefixes.
  • the description object is a "field”
  • the ordinal number before the "field” in the "first field” and the "second field” does not limit the position or order between the "fields”
  • the "first” and “second” do not limit whether the "fields” they modify are in the same message, nor do they limit the order of the "first field” and the "second field”.
  • the description object is a "level”
  • the ordinal number before the "level” in the “first level” and the “second level” does not limit the priority between the "levels”.
  • the number of description objects is not limited by the ordinal number, and can be one or more. Taking the "first device” as an example, the number of "devices” can be one or more.
  • the objects modified by different prefixes may be the same or different. For example, if the description object is "device”, then the “first device” and the “second device” may be the same device or different devices, and their types may be the same or different. For another example, if the description object is "information”, then the "first information” and the “second information” may be the same information or different information, and their contents may be the same or different.
  • “including A”, “comprising A”, “used to indicate A”, and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.
  • terms such as “...”, “determine...”, “in the case of...”, “at the time of...”, “when...”, “if...”, “if...”, etc. can be used interchangeably.
  • terms such as “greater than”, “greater than or equal to”, “not less than”, “more than”, “more than or equal to”, “not less than”, “higher than”, “higher than or equal to”, “not lower than”, and “above” can be replaced with each other, and terms such as “less than”, “less than or equal to”, “not greater than”, “less than”, “less than or equal to”, “no more than”, “lower than”, “lower than or equal to”, “not higher than”, and “below” can be replaced with each other.
  • devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments.
  • Terms such as “device”, “equipment”, “device”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, and “subject” can be used interchangeably.
  • network can be interpreted as devices included in the network (eg, access network equipment, core network equipment, data network equipment, etc.).
  • terminal In some embodiments, the terms "terminal”, “terminal device”, “user equipment (UE)”, “user terminal” “mobile station (MS)”, “mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client and the like can be used interchangeably.
  • the access network device, the core network device, or the network device may be replaced by a terminal.
  • the embodiments of the present disclosure may also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.).
  • the terminal may also be configured that the terminal has all or part of the functions of the access network device.
  • terms such as "uplink” and "downlink” may also be replaced by terms corresponding to communication between terminals (for example, "side”).
  • an uplink channel, a downlink signal, or a downlink channel may be replaced by a downlink signal.
  • the uplink, downlink, etc. can be replaced by the sidelink.
  • the terminal may be replaced by an access network device, a core network device, or a network device.
  • the access network device, the core network device, or the network device may also be configured to have a structure that has all or part of the functions of the terminal.
  • the access network device may also be referred to as an access network function, an access network element, etc.
  • the core network device may also be referred to as a core network function, a core network, a core network element, etc.
  • each network device in the core network may also be referred to as a network function, a network element, etc.
  • the acquisition of data, information, etc. may comply with the laws and regulations of the country where the data is obtained.
  • data, information, etc. may be obtained with the user's consent.
  • each element, each row, or each column in the table of the embodiments of the present disclosure may be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns may also be implemented as an independent embodiment.
  • Fig. 1 is a schematic diagram of an architecture of a communication system provided according to an embodiment of the present disclosure.
  • a communication system 100 includes a terminal 101 and a network device 102.
  • the network device 102 may be an access network device.
  • the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things (IoT) device, a car with communication function, a smart car, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.
  • IoT Internet of Things
  • TV virtual reality
  • AR augmented reality
  • the access network device may be a node or device that accesses a terminal to a wireless network.
  • the access network device may include an evolved Node B (eNB), a next generation evolved Node B (ng-eNB), a next generation Node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a satellite base station, a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.
  • eNB evolved Node B
  • ng-eNB next generation evolved Node B
  • gNB next generation Node B
  • the technical solution of the present disclosure may be applicable to the Open RAN architecture.
  • the interfaces within the network equipment involved in the embodiments of the present disclosure may become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces may be implemented through software or programs.
  • the access network device may be composed of a centralized unit (central unit, CU) and a distributed unit (distributed unit, DU), wherein the CU may also be called a control unit (control unit).
  • the CU-DU structure may be used to split the protocol layers of the network device, with some functions of the protocol layers being centrally controlled by the CU, and the remaining part or all of the functions of the protocol layers being distributed in the DU, which is centrally controlled by the CU, but is not limited to this.
  • the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure.
  • a person skilled in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.
  • the following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or part of the subject, but are not limited thereto.
  • the subjects shown in FIG1 are examples, and the communication system may include all or part of the subjects in FIG1 , or may include other subjects other than FIG1 , and the number and form of the subjects are arbitrary, and the connection relationship between the subjects is an example, and the subjects may be connected or disconnected, and the connection may be in any manner, which may be a direct connection or an indirect connection, and may be a wired connection or a wireless connection.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-B LTE-Beyond
  • SUPER 3G IMT-Advanced
  • 4G the fourth generation mobile communication system
  • 5G 5G new radio
  • FAA New Radio Access
  • NX New Radio access
  • FX Future generation radio access
  • UMC Global System for Mobile Communications
  • GSM Global System for Mobile communications
  • CDMA2000 Code Division Multiple Access 2000
  • UMB Ultra Mobile Broadband
  • IEEE802.11 Wi-Fi (registered trademark)
  • IEEE 802.16 WiMAX (registered trademark)
  • IEEE 802.20 Ultra Wideband (UWB)
  • Bluetooth registered trademark
  • PLMN Public Land Mobile Network
  • D2D Device-to-Device
  • M2M Machine-to-Machine
  • IoT Internet of Things
  • V2X Vehicle-to-Everything
  • systems using other communication methods next-generation systems expanded based on them, etc.
  • a combination of multiple systems for example, a combination of LTE or LTE-A with 5G, etc.
  • a combination of multiple systems for example, a combination of LTE or LTE-A with 5G, etc.
  • the millimeter wave frequency band has a huge available bandwidth, can provide extremely high transmission rates, and has a short wavelength, which is conducive to the integration of antenna elements.
  • network equipment In communication systems, network equipment usually adopts a centralized local oscillator architecture, that is, only one local oscillator (hereinafter referred to as local oscillator) is used, and the number of antennas is also small. All DMRS antenna ports are coherent ports, and only one PTRS port is required.
  • the impact of PN on OFDM signals is two-fold: one part is that all subcarrier signals have the same phase deflection, which is called common phase error (CPE); the other part is the interference of the value of the adjacent subcarrier affected by the phase noise superimposed on the current subcarrier signal, which is called inter-carrier interference (ICI).
  • CPE common phase error
  • ICI inter-carrier interference
  • a distributed local oscillator architecture has been introduced.
  • a large-scale multiple-in multiple-out (MIMO) OFDM system usually adopts a distributed local oscillator architecture.
  • MIMO multiple-in multiple-out
  • each RF chain is connected to a dedicated local oscillator, which causes the transmitted signals of different RF chains to experience independent PN.
  • the impact of PN on the OFDM signal is three parts: the first part is that all subcarriers have the same phase rotation, that is, CPE; the second part is that the signal on the adjacent m-th subcarrier affected by phase noise is added to the current k-th subcarrier, that is, ICI; the third part is that the current k-th subcarrier is subject to a phase deflection related to the subcarrier index k, that is, the phase deflection on different subcarriers is different, which is a new interference term.
  • PN is the phase error between the phase of the local oscillator and the phase of the actual carrier signal, which means that the phase of the sine wave generated by the local oscillator will change randomly over time and cause the power spectrum density of the generated carrier to expand.
  • PN is usually characterized in the frequency domain.
  • the PN size at a fixed frequency that deviates from the carrier frequency can be expressed as the ratio of the noise power in a 1Hz bandwidth at that frequency to the carrier signal power, in dBc/Hz.
  • PN is introduced at the up-conversion and down-conversion locations due to imperfect oscillators.
  • the effects of PN are observed as multiplicative noise on OFDM signals, introduced when the baseband signal is multiplied by the high-frequency carrier generated by the oscillator for frequency up-conversion, and also introduced at the receiver during the down-conversion of the passband signal to baseband.
  • the central local oscillator architecture means that multiple RF chains (also called RF links) share the local oscillator, and the phase noise multiplied by the signals on all transmitting antennas is the same, and the phase noise multiplied by the signals on all receiving antennas is the same.
  • FIG2 is a schematic diagram of an OFDM system affected by PN under a centralized local oscillator architecture provided according to an embodiment of the present disclosure.
  • the OFDM system uses multiple antennas to achieve multiplexing gain.
  • the baseband processing unit 211 at the transmitting end is connected to multiple transmitting antennas 212, and the baseband processing unit 221 at the receiving end is connected to multiple receiving antennas 222.
  • PN is introduced due to the non-ideal characteristics of the oscillator, and reaches the receiving end after passing through the multipath channel and being affected by additive white Gaussian noise.
  • PN is also introduced during the down-conversion process at the receiving end. Due to the use of a centralized local oscillator architecture, the PN multiplied by the signals on all transmitting antennas (or receiving antennas) is the same. Then, the impact of PN on the transmitted signal includes CPE and ICI.
  • the distributed local oscillator architecture means that multiple RF links have dedicated local oscillators one by one, and different local oscillators produce different PNs.
  • FIG3 is a schematic diagram of an OFDM system affected by PN under a distributed local oscillator architecture provided according to an embodiment of the present disclosure.
  • the PN multiplied by the signal on each transmitting antenna 212 is no longer the same.
  • PN 1i or PN 2j are independent of each other, so that the influence of PN on the transmitted signal changes from the original two items (CPE and ICI) to three items (CPE, ICI and new interference items).
  • CPE and ICI original two items
  • CPE, ICI and new interference items three items
  • new interference items also makes the PN under the distributed local oscillator architecture more difficult to track and compensate.
  • Fig. 4 is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure.
  • the present disclosure embodiment relates to a communication method, which is applied to a communication system 100, including an access network device and a terminal. As shown in Fig. 4, the method includes steps S410 to S420.
  • step S410 the network device sends configuration information.
  • the network device may adopt a centralized local oscillator architecture, in which case N radio frequency chains share one local oscillator, where N is an integer greater than or equal to 2.
  • FIG5A is a schematic diagram of a structure of a network device provided according to an embodiment of the present disclosure. As shown in FIG5A, two radio frequency chains 51 of a network device (such as a base station) use one local oscillator PN. At this time, the network device requires one downlink PTRS port to estimate and compensate for the PN generated by the local oscillator.
  • the network device may adopt a distributed local oscillator architecture, in which case N radio frequency chains correspond one to one with N local oscillators.
  • the N RF chains of the network device use their own local oscillators PN 1 , PN 2 , ...PN N , and PN 1 , PN 2 , ...PN N are independent of each other.
  • the network device requires N downlink PTRS ports to respectively estimate and compensate for the PN generated by their respective local oscillators.
  • the value of N can be 2, 4, 8, 16, etc.
  • the terminal receives configuration information.
  • the configuration information is used to indicate the number of downstream PTRS ports.
  • the downlink PTRS is used to track and compensate for the PN generated by one or N local oscillators in the network device.
  • the configuration information includes at least one of the following: the maximum number of downlink PTRS ports, the number of TCI states, and the number of CDM groups corresponding to DMRS ports.
  • the maximum number of groups of downlink PTRS ports may be a high-level parameter maxNrofPorts.
  • CDM group corresponding to the DMRS port may also be called a DMRS port group.
  • the number of downlink PTRS ports may be indicated by radio resource control (RRC) configuration information, or may be indicated by both RRC configuration information and DCI.
  • RRC radio resource control
  • the network device sends downlink PTRS configuration information (ie, RRC configuration information).
  • RRC configuration information ie, RRC configuration information
  • the downlink PTRS configuration information includes a maximum number of downlink PTRS ports.
  • the downlink PTRS configuration information includes the maximum number of downlink PTRS ports and the number of CDM groups corresponding to the DMRS ports.
  • the network device sends DCI.
  • the DCI includes the number of TCI states.
  • the network device may have one downstream PTRS port. Then, the network device may use one downstream PTRS port to send the downstream PTRS. At this time, the number of downstream PTRS ports indicated by the configuration information is 1.
  • the network device may have N downstream PTRS ports. Then, the network device may use N downstream PTRS ports to send downstream PTRS. At this time, the number of downstream PTRS ports indicated by the configuration information is N.
  • the number of PTRS ports is related to the number of PN sources.
  • the number of PN sources can be N, such as 2, 4, 8, 16, etc.
  • the number of downlink PTRS ports can be N, such as 2, 4, 8, 16, etc.
  • the network device can use 2 downlink PTRS ports, and can also use 4 downlink PTRS ports, 8 downlink PTRS ports, 16 downlink PTRS ports, etc.
  • the number of antennas in the communication device can be further increased, and a larger-scale antenna array can be used.
  • the number N of the corresponding downlink PTRS ports can also be increased accordingly. Therefore, the embodiment of the present disclosure does not specifically limit the number of downlink PTRS ports.
  • step S420 the terminal determines the time-frequency domain density configuration of the downlink PTRS based on the number of downlink PTRS ports.
  • the terminal receives configuration information and determines the number of downlink PTRS ports according to the configuration information. In one embodiment, the terminal determines the number of downlink PTRS ports according to the maximum number of downlink PTRS ports, the number of TCI states, and the number of CDM groups corresponding to the DMRS ports.
  • the terminal determines that the number of downlink PTRS ports is 1.
  • the terminal determines that the number of downlink PTRS ports is 1.
  • the terminal when the terminal determines that the number of downlink PTRS ports is 1, it considers that the network device adopts a centralized local oscillator architecture.
  • the terminal determines that the number of downlink PTRS ports is 1, the downlink PTRS port is associated with the DMRS port with the lowest index among the DMRS ports allocated for the physical downlink shared channel (PDSCH).
  • the maximum number of downlink PTRS ports is configured as 2
  • the number of TCI states is equal to 2
  • the number of CDM groups corresponding to the DMRS ports is equal to 2
  • the terminal determines that the number of downlink PTRS ports is 2.
  • the terminal when the terminal determines that the number of downlink PTRS ports is 2, it considers that the network device adopts a distributed local oscillator architecture.
  • the two downlink PTRS ports are respectively associated with the lowest index DMRS ports in the CDM group corresponding to the DMRS ports of the indicated two TCI states (such as the first TCI state and the second TCI state).
  • the high-level parameter maxNrofPorts is set to 1, at which time the terminal determines that the number of downlink PTRS ports is 1.
  • the high-level parameter maxNrofPorts is set to 2
  • the number of TCI states indicated by the DCI and the number of CDM groups corresponding to the DMRS ports are both 2, at which time the terminal determines that the downlink PTRS port is 2.
  • the terminal will receive the downlink PTRS sent by the two downlink PTRS ports.
  • the two downlink PTRS ports are respectively associated with the lowest index DMRS ports in the CDM group corresponding to the DMRS ports corresponding to the two TCI states.
  • the lowest index DMRS port in the CDM group corresponding to the DMRS ports of the two indicated TCI states can also be described as: “the lowest index DMRS port among the DMRS ports of the two indicated TCI states", “the lowest index DMRS port among the DMRS ports corresponding to the indicated first TCI state and the second TCI state", etc., and the embodiments of the present disclosure do not make specific limitations.
  • the high-level parameter maxNrofPorts is configured to 2, the number of TCI states indicated by the DCI is 1, and the number of CDM groups corresponding to the DMRS port is 2, at this time, the terminal determines that the number of downlink PTRS ports is 1.
  • the high-level parameter maxNrofPorts is set to 2, the number of TCI states indicated by the DCI is 2, and the number of CDM groups corresponding to the DMRS port is 1, at this time, the terminal determines that the number of downlink PTRS ports is 1.
  • the terminal determines that the number of downlink PTRS ports is 1 or 2.
  • the terminal determines that the number of downlink PTRS ports is 4.
  • the 4 downlink PTRS ports are respectively associated with the lowest index DMRS ports in the CDM group corresponding to the 4 DMRS ports indicating the TCI state.
  • the high-level parameter maxNrofPorts is set to 4, and the number of TCI states indicated by the DCI and the number of CDM groups corresponding to the DMRS port are both 4.
  • the terminal determines that the downlink PTRS port is 4. Then. The terminal will receive the downlink PTRS sent by 4 downlink PTRS ports. These 4 downlink PTRS ports are respectively associated with the lowest index DMRS port in the CDM group corresponding to the DMRS port corresponding to the 4 TCI states.
  • the high-level parameter maxNrofPorts is set to 4, the number of TCI states indicated by the DCI is 1 or 2, and the number of CDM groups corresponding to the DMRS port is 4.
  • the terminal determines that the number of downlink PTRS ports is 1 or 2.
  • the high-level parameter maxNrofPorts is set to 4, the number of TCI states indicated by the DCI is 4, and the number of CDM groups corresponding to the DMRS port is 1 or 2. In this case, the terminal determines that the number of downlink PTRS ports is 1 or 2.
  • the terminal determines that the number of downlink PTRS ports is 1, 2 or 4.
  • the terminal determines that the number of downlink PTRS ports is 8.
  • the 8 downlink PTRS ports are respectively associated with the lowest index DMRS ports in the CDM group corresponding to the 8 DMRS ports indicating the TCI state.
  • the high-level parameter maxNrofPorts is set to 8, and the number of TCI states indicated by the DCI and the number of CDM groups corresponding to the DMRS port are both 8.
  • the terminal determines that the downlink PTRS port is 8. Then. The terminal will receive the downlink PTRS sent by 8 downlink PTRS ports. These 8 downlink PTRS ports are respectively associated with the lowest index DMRS port in the CDM group corresponding to the DMRS port corresponding to the 8 TCI states.
  • the high-level parameter maxNrofPorts is set to 8, the number of TCI states indicated by the DCI is 1, 2 or 4, and the number of CDM groups corresponding to the DMRS port is 8.
  • the terminal determines that the number of downlink PTRS ports is 1, 2 or 4.
  • the high-level parameter maxNrofPorts is set to 8, the number of TCI states indicated by the DCI is 8, and the number of CDM groups corresponding to the DMRS port is 1, 2 or 4. In this case, the terminal determines that the number of downlink PTRS ports is 1, 2 or 4.
  • the time-frequency domain density configuration of the downlink PTRS is different.
  • the terminal can determine the corresponding time-frequency domain density configuration of the downlink PTRS according to the number of downlink PTRS ports.
  • the time-frequency domain density configuration of the downlink PTRS may be a first time-frequency domain density configuration. Since the network device adopts a centralized local oscillator architecture when the number of downlink PTRS ports is 1, the downlink PTRS with the first time-frequency domain density configuration has a smaller frequency domain density and a larger time domain density.
  • the time-frequency domain density configuration of the downlink PTRS may be a second time-frequency domain density configuration. Since the network device adopts a distributed local oscillator architecture when the number of downlink PTRS ports is N, the downlink PTRS with the second time-frequency domain density configuration has a larger frequency domain density and a smaller time domain density.
  • the time-frequency domain density configuration of the downlink PTRS includes time-domain density and frequency-domain density.
  • the first time-frequency domain density configuration includes a first time-domain density and a first frequency-domain density.
  • the second time-frequency domain density configuration includes a second time-domain density and a second frequency-domain density.
  • the first time-frequency domain density configuration includes a first time-domain density and a first frequency-domain density, wherein the first time-domain density is one of the following: 4, 2, 1; and the first frequency-domain density is one of the following: 2, 4.
  • the terminal may determine the first time domain density according to the MSC scheduled by the downlink PTRS.
  • the mapping relationship between the MSC scheduled by the downlink PTRS and the first time domain density may be as shown in Table 1 below.
  • I MSC is the value of the MSC scheduled by the downlink PTRS
  • ptrs-MCS i are the first MSC threshold, the second MCS threshold, the third MCS threshold, and the fourth MCS threshold, respectively.
  • the terminal may determine the first time domain density according to the bandwidth of the downlink PTRS scheduling.
  • the mapping relationship between the bandwidth of the downlink PTRS scheduling and the first frequency domain density may be as shown in Table 2 below.
  • N RB is the value of the bandwidth of the downlink PTRS scheduling
  • the second time-frequency domain density configuration includes a second time-domain density and a second frequency-domain density, wherein the second time-domain density is one of the following: 6, 4, 2; and the second frequency-domain density is one of the following: 1, 2.
  • the terminal may determine the second time domain density according to the MSC scheduled by the downlink PTRS.
  • the mapping relationship between the MSC scheduled by the downlink PTRS and the second time domain density may be as shown in Table 3 below.
  • the terminal may determine the second time domain density according to the bandwidth scheduled by the downlink PTRS.
  • the mapping relationship between the bandwidth scheduled by the downlink PTRS and the second frequency domain density may be as shown in Table 4 below.
  • the above table can be an RRC table, that is, the time-frequency domain density of the downlink PTRS is configured to the terminal through RRC signaling.
  • RRC table that is, the time-frequency domain density of the downlink PTRS is configured to the terminal through RRC signaling.
  • the communication method involved in the embodiment of the present disclosure may include at least one of step S410 to step S420.
  • step S410 may be implemented as an independent embodiment.
  • step S420 may be implemented as an independent embodiment. It should be noted that the possible independent embodiments consisting of one or more steps in step S410 to step S420 are not limited thereto.
  • the network device indicates the number of downlink PTRS ports to the terminal, so that the terminal can determine the time-frequency domain density configuration of the corresponding downlink PTRS according to the number of downlink PTRS ports.
  • the time-frequency domain density configuration at this time is more conducive to the terminal to accurately estimate and compensate for PN, thereby improving the overall performance of the system.
  • the time-domain density configuration range of the downlink PTRS required by the terminal for PN estimation and compensation is different.
  • the frequency domain density of the PTRS required for PN elimination is relatively small, while the time domain density is large.
  • the frequency domain density of the PTRS required for PN elimination is large, while the time domain density can be reduced due to the shortening of the symbol length.
  • the names of information, etc. are not limited to the names described in the embodiments, "information", “message” or “information”.
  • terms such as “moment”, “time point”, “time”, and “time position” can be interchangeable, and terms such as “duration”, “period”, “time window”, “window”, and “time” can be interchangeable.
  • obtain can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from high levels, obtaining by self-processing, autonomous implementation, etc.
  • terms such as “certain”, “preset”, “preset”, “setting”, “indicated”, “some”, “any”, and “first” can be interchangeable, and "specific A”, “preset A”, “preset A”, “setting A”, “indicated A”, “some A”, “any A”, and “first A” can be interpreted as A pre-defined in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., and can also be interpreted as specific A, some A, any A, or first A, etc., but is not limited to this.
  • the determination or judgment can be performed by a value represented by 1 bit (0 or 1), by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values (for example, comparison with a predetermined value), but is not limited to this.
  • Fig. 6 is an exemplary flow chart of a communication method performed by a network device side according to an embodiment of the present disclosure.
  • the present disclosure embodiment relates to a communication method, which is applied to a network device. As shown in Fig. 6, the method includes step S610.
  • step S610 configuration information is sent.
  • step S610 can refer to the optional implementation of step S410 in FIG. 4 , and other related parts in the embodiment involved in FIG. 4 , which will not be described in detail here.
  • the network device (such as an access network device) sends configuration information to the terminal, but is not limited to this, and the configuration information may also be sent to other entities.
  • Fig. 7 is an exemplary flow chart of a communication method performed by a terminal side according to an embodiment of the present disclosure.
  • the present disclosure embodiment relates to a communication method, which is applied to a terminal. As shown in Fig. 7, the method includes steps S710 to S720.
  • step S710 configuration information is received.
  • step S710 can refer to the optional implementation of step S410 in FIG. 4 and other related parts in the embodiment involved in FIG. 4 , which will not be described in detail here.
  • the terminal receives configuration information sent by a network device (such as an access network device), but is not limited thereto, and may also receive configuration information sent by other entities.
  • a network device such as an access network device
  • step S720 the time-frequency domain density configuration of the downlink PTRS is determined based on the number of downlink PTRS ports.
  • step S720 can refer to the optional implementation of step S420 in Figure 4 and other related parts in the embodiment involved in Figure 4, which will not be repeated here.
  • the embodiment of the present disclosure provides specific solutions respectively, so that the configuration of PTRS is more conducive to the estimation and compensation of PN under the current local oscillator architecture, and improves the overall performance of the system.
  • the technical solutions and specific scenarios for solving the two problems are given below:
  • the distributed local oscillator architecture in Problem 1 needs to indicate the number of PTRS ports and the associated DMRS ports to the mid-terminal during downlink transmission. This problem occurs because the number of PTRS ports is related to the number of PN sources. When there are multiple independent PN sources, i.e., multiple local oscillators under the distributed local oscillator architecture, each PN source requires a PTRS port for PN estimation.
  • the high-level parameter maxNrofPorts configures the maximum number of downlink PTRS antenna ports in each TCI state. If maxNrofPorts is set to 1, the number of scheduled PTRS ports is 1. If maxNrofPorts is set to 2, and the number of TCI states indicated by the DCI and the number of CDM groups corresponding to the DMRS ports are both 2, the terminal will receive two PTRS ports, which are respectively associated with the lowest indexed DMRS ports in the DMRS port groups corresponding to the 2 TCI states.
  • maxNrofPorts is set to 2
  • the number of TCI states indicated by the DCI is 2, but the number of CDM groups corresponding to the DMRS ports is 1, the terminal will receive 1 PTRS port, which is associated with the lowest indexed DMRS port in the DMRS ports allocated for PDSCH.
  • the distributed local oscillator architecture shown in FIG. 5B is used as an example.
  • the two RF chains use their own local oscillators.
  • This downlink requires two PTRS ports to estimate and compensate for the PN generated by their respective local oscillators.
  • the high-level parameter maxNrofPorts is set to 2, and the number of TCI states indicated by the DCI and the number of CDM groups corresponding to the DMRS ports are both 2.
  • the terminal will receive two PTRS ports, which are respectively associated with the lowest index DMRS ports in the DMRS port groups corresponding to the two TCI states (which can be recorded as the first DMRS port group and the second DMRS port group).
  • PTRS time-frequency domain density configuration ranges are required under different local oscillator architectures.
  • the solution is to add new PTRS time-frequency domain density configuration tables for the distributed local oscillator architecture in the protocol, such as Table 3 and Table 4 above.
  • the terminal determines whether to search for the RRC table corresponding to the centralized local oscillator architecture (such as Table 1 and Table 2 above, refer to Table 5.1.6.3-1-1 and Table 5.1.6.3-2-1 in 3GPP TS 38.214) or the RRC table corresponding to the distributed local oscillator architecture (such as Table 3 and Table 4 above) according to the number of downlink PTRS ports, and then searches for the PTRS time-frequency domain density in the corresponding table in combination with the scheduled MCS and the scheduled bandwidth.
  • the centralized local oscillator architecture such as Table 1 and Table 2 above, refer to Table 5.1.6.3-1-1 and Table 5.1.6.3-2-1 in 3GPP TS 38.214
  • the RRC table corresponding to the distributed local oscillator architecture such as Table 3 and Table 4 above
  • the network device (such as access network device) side still takes the distributed local oscillator architecture shown in Figure 5B as an example.
  • the two RF chains use their own local oscillators, the high-level parameter maxNrofPorts is set to 2, and the number of TCI states indicated by the DCI and the number of CDM groups corresponding to the DMRS port are both 2.
  • the terminal will receive two PTRS ports, which are respectively associated with the lowest index DMRS port in the DMRS port groups corresponding to the two DMRS port groups indicating the TCI states (which can be recorded as the first DMRS port group and the second DMRS port group).
  • the terminal learns that there are two PTRS ports that need to be received, it believes that the network device side is a distributed local oscillator architecture, so the time-frequency domain density of the two PTRS ports will be determined by looking up Table 3 and Table 4 according to the scheduled MCS and the scheduled bandwidth.
  • part or all of the steps and their optional implementations may be arbitrarily combined with part or all of the steps in other embodiments, or may be arbitrarily combined with optional implementations of other embodiments.
  • the embodiments of the present disclosure also provide a device for implementing any of the above methods.
  • the embodiments of the present disclosure provide a device.
  • the above device includes a unit or module for implementing each step performed by the terminal in any of the above methods.
  • another device is also provided, including a unit or module for implementing each step performed by a network device (e.g., an access network device, or a core network device, etc.) in any of the above methods.
  • a network device e.g., an access network device, or a core network device, etc.
  • the division of the units or modules in the above device is only a division of logical functions, which can be fully or partially integrated into one physical entity or physically separated in actual implementation.
  • the units or modules in the device can be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and instructions are stored in the memory.
  • the processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory inside the device or a memory outside the device.
  • CPU central processing unit
  • microprocessor a microprocessor
  • the units or modules in the device may be implemented in the form of hardware circuits, and the functions of some or all of the units or modules may be implemented by designing the hardware circuits.
  • the hardware circuits may be understood as one or more processors; for example, in one implementation, the hardware circuits are application-specific integrated circuits (ASICs), and the functions of some or all of the above units or modules may be implemented by designing the logical relationship of the components in the circuits; for another example, in another implementation, the hardware circuits may be implemented by programmable logic devices (PLDs), and Field Programmable Gate Arrays (FPGAs) may be used as an example, which may include a large number of logic gate circuits, and the connection relationship between the logic gate circuits may be configured by configuring the configuration files, thereby implementing the functions of some or all of the above units or modules. All units or modules of the above devices may be implemented in the form of software called by the processor, or in the form of hardware circuits, or in the form of software called by the processor, and the remaining part may be implemented in
  • the processor is a circuit with signal processing capability.
  • the processor may be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which may be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor may implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of the above hardware circuit may be fixed or reconfigurable, such as a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the process of the processor loading a configuration document to implement the hardware circuit configuration may be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules.
  • it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.
  • NPU neural network processing unit
  • TPU tensor processing unit
  • DPU deep learning processing unit
  • FIG8 is an exemplary structural diagram of a communication device provided according to an embodiment of the present disclosure.
  • the communication device 800 may include at least one of a receiving module 801 , a processing module 802 , and a sending module 803 .
  • the communication device 800 may be arranged in a network device.
  • the communication device 800 includes a sending module 803 .
  • the sending module 803 is configured to send configuration information, where the configuration information is used to indicate the number of downlink PTRS ports, and the downlink PTRS is used to estimate and compensate for PN generated by a local oscillator used by at least one RF chain.
  • the configuration information includes at least one of the following: the maximum number of downlink PTRS ports; the number of TCI states; the number of CDM groups corresponding to the DMRS ports.
  • the sending module 803 is configured to perform at least one of the following: sending downlink PTRS configuration information, downlink PTRS
  • the configuration information includes the maximum number of downlink PTRS ports and/or the number of CDM groups corresponding to the DMRS ports; DCI is sent, and the DCI is used to indicate the number of TCI states.
  • the number of downlink PTRS ports is 1 or N, where N is an integer greater than or equal to 2.
  • the number of downstream PTRS ports is 1.
  • the two downlink PTRS ports are respectively associated with the lowest index DMRS ports in the two DMRS port groups indicating the TCI state.
  • the number of downlink PTRS ports is 1 corresponding to a first time-frequency domain density configuration; or, the number of downlink PTRS ports is N corresponding to a second time-frequency domain density configuration.
  • the second time-frequency domain density configuration includes: time domain density and frequency domain density; the value of the time domain density is one of the following: 6, 4, 2; the value of the frequency domain density is one of the following: 1, 2.
  • the second time-frequency domain density configuration includes at least one of the following: the MCS of the downlink PTRS scheduling is greater than or equal to the first MCS threshold and less than the second MCS threshold, and the time domain density value is 6; the MCS of the downlink PTRS scheduling is greater than or equal to the second MCS threshold and less than the third MCS threshold, and the time domain density value is 4; the MCS of the downlink PTRS scheduling is greater than or equal to the third MCS threshold and less than the fourth MCS threshold, and the time domain density value is 2.
  • the second time-frequency domain density configuration includes at least one of the following: the bandwidth of the downlink PTRS scheduling is greater than or equal to the first bandwidth threshold and less than the second bandwidth threshold, and the value of the frequency domain density is 1; the bandwidth of the downlink PTRS scheduling is greater than or equal to the second bandwidth threshold and less than the third bandwidth threshold, and the value of the frequency domain density is 2.
  • the communication device 800 may be arranged in a terminal.
  • the communication device 800 includes a receiving module 801 and a processing module 802 .
  • the receiving module 801 is configured to receive configuration information, where the configuration information is used to indicate the number of downlink PTRS ports; the processing module 802 is configured to determine the time-frequency domain density configuration of the downlink PTRS based on the number of downlink PTRS ports; wherein the downlink PTRS is used to estimate and compensate for the PN generated by the local oscillator used by at least one RF chain.
  • the configuration information includes at least one of the following: the maximum number of downlink PTRS ports; the number of TCI states; the number of code CDM groups corresponding to the DMRS ports.
  • the receiving module 801 is configured to perform at least one of the following: receiving downlink PTRS configuration information, the downlink PTRS configuration information including the maximum number of downlink PTRS ports and/or the number of CDM groups corresponding to the DMRS ports; receiving DCI, the DCI including the number of TCI states.
  • the number of downlink PTRS ports is 1 or N, where N is an integer greater than or equal to 2.
  • the number of downstream PTRS ports is configured as 1.
  • the two downlink PTRS ports are respectively associated with the lowest index DMRS ports in the two DMRS port groups indicating the TCI state.
  • the processing module 802 is configured to determine that the time-frequency domain density configuration is a first time-frequency domain density configuration when the number of downlink PTRS ports is 1; or, when the number of downlink PTRS ports is N, determine that the time-frequency domain density configuration is a second time-frequency domain density configuration.
  • the second time-frequency domain density configuration includes: time domain density and frequency domain density; the value of the time domain density is one of the following: 6, 4, 2; the value of the frequency domain density is one of the following: 1, 2.
  • the second time-frequency domain density configuration includes at least one of the following: the MCS of the downlink PTRS scheduling is greater than or equal to the first MCS threshold and less than the second MCS threshold, and the time domain density value is 6; the MCS of the downlink PTRS scheduling is greater than or equal to the second MCS threshold and less than the third MCS threshold, and the time domain density value is 4; the MCS of the downlink PTRS scheduling is greater than or equal to the third MCS threshold and less than the fourth MCS threshold, and the time domain density value is 2.
  • the second time-frequency domain density configuration includes at least one of the following: the bandwidth of the downlink PTRS scheduling is greater than or equal to the first bandwidth threshold and less than the second bandwidth threshold, and the value of the frequency domain density is 1; the bandwidth of the downlink PTRS scheduling is greater than or equal to the second bandwidth threshold and less than the third bandwidth threshold, and the value of the frequency domain density is 2.
  • FIG9 is a schematic diagram of a structure of a communication device provided according to an embodiment of the present disclosure.
  • the communication device 900 may be a network device (e.g., an access network device), or a terminal, or a chip, a chip system, or a processor that supports the network device to implement any of the above methods, or a chip, a chip system, or a processor that supports the terminal to implement any of the above communication methods.
  • the communication device 900 may be used to implement
  • the communication method described in the above method embodiment may refer to the description in the above method embodiment for details.
  • the communication device 900 includes one or more processors 901.
  • the processor 901 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit.
  • the baseband processor may be used to process the communication protocol and the communication data
  • the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a program, and process the data of the program.
  • the processor 901 is used to call instructions so that the communication device 900 executes any of the above communication methods.
  • the communication device 900 further includes one or more memories 902 for storing instructions.
  • the memory 902 may also be outside the communication device 900.
  • the communication device 900 further includes one or more transceivers 903.
  • the communication steps such as sending and receiving in the above method are executed by the transceiver 903, and the other steps are executed by the processor 901.
  • the transceiver may include a receiver and a transmitter, and the receiver and the transmitter may be separate or integrated.
  • the terms such as transceiver, transceiver unit, transceiver, transceiver circuit, etc. may be replaced with each other, the terms such as transmitter, transmission unit, transmitter, transmission circuit, etc. may be replaced with each other, and the terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.
  • the communication device 900 further includes one or more interface circuits 904, which are connected to the memory 902.
  • the interface circuit 904 can be used to receive signals from the memory 902 or other devices, and can be used to send signals to the memory 902 or other devices.
  • the interface circuit 904 can read instructions stored in the memory 902 and send the instructions to the processor 901.
  • the communication device 900 described in the above embodiment may be an access network device, a core network device, an external network device or a terminal, but the scope of the communication device 900 described in the embodiment of the present disclosure is not limited thereto, and the structure of the communication device 900 may not be limited by FIG. 9.
  • the communication device may be an independent device or may be part of a larger device.
  • the communication device may be: (1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) other devices.
  • the embodiment of the present disclosure also provides a storage medium, on which instructions are stored.
  • the communication device 900 executes any one of the above communication methods.
  • the storage medium is an electronic storage medium.
  • the storage medium is a computer-readable storage medium, but it can also be a storage medium readable by other devices.
  • the storage medium can be a non-transitory storage medium, but it can also be a temporary storage medium.
  • the embodiment of the present disclosure further provides a program product, and when the program product is executed by the communication device 900, the communication device 900 executes any one of the above communication methods.
  • the program product is a computer program product.
  • the embodiment of the present disclosure also provides a computer program, which, when executed on a computer, enables the computer to execute any one of the above communication methods.

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Abstract

本公开实施例提供一种通信方法和装置、通信设备及存储介质。该方法包括：发送配置信息，所述配置信息用于指示下行相位跟踪参考信号PTRS端口的数量，下行PTRS用于对至少一个射频链所使用的本地振荡器产生的相位噪声(PN)进行估计和补偿，如此，实现对相位噪声进行准确的估计和补偿。

Description

通信方法和装置、通信设备及存储介质 技术领域
本公开涉及通信技术领域，尤其涉及一种通信方法和装置、通信设备及存储介质。
背景技术
毫米波频段具有巨大的可用带宽，能够提供极高的传输速率，并且波长很短从而有利于天线元件的集成，这些优点使得毫米波无线通信技术的研究炙手可热。然而，毫米波也存在明显的缺陷，比如容易受到障碍物的阻挡、对相位噪声(phase noise，PN)十分敏感等。
发明内容
在不同本地振荡器架构下，网络设备通过向终端指示下行相位跟踪参考信号(phase tracking reference signal，PTRS)端口的数量，使得终端能够根据PTRS端口的数量，确定相应的PTRS的时频域密度配置，从而实现对PN进行准确的估计和补偿，提升系统整体性能。
根据本公开实施例的第一方面，提供了一种通信方法，由网络设备执行，该方法包括：发送配置信息，配置信息用于指示下行PTRS端口的数量，下行PTRS用于对至少一个射频链所使用的本地振荡器产生的PN进行估计和补偿。
根据本公开实施例的第二方面，提供了一种通信方法，由终端执行，该方法包括：接收配置信息，配置信息用于指示下行PTRS端口的数量；基于下行PTRS端口的数量，确定下行PTRS的时频域密度配置；其中，下行PTRS用于对至少一个射频链所使用的本地振荡器产生的PN进行估计和补偿。
根据本公开实施例的第三方面，提供了一种通信装置，可以应用于网络设备，该通信装置包括：发送模块，被配置为发送配置信息，配置信息用于指示下行PTRS端口的数量，下行PTRS用于对至少一个射频链所使用的本地振荡器产生的PN进行估计和补偿。
根据本公开实施例的第四方面，提供了一种通信装置，可以应用于终端，该通信装置包括：接收模块，被配置为接收配置信息，配置信息用于指示下行PTRS端口的数量；处理模块，被配置为基于下行PTRS端口的数量，确定下行PTRS的时频域密度配置；其中，下行PTRS用于对至少一个射频链所使用的本地振荡器产生的PN进行估计和补偿。
根据本公开实施例的第五方面，提供了一种通信设备，如网络设备或终端。该通信设备包括：至少一个处理器；耦合于至少一个处理器的存储器，存储器存储有可执行指令，可执行指令被所述至少一个处理器执行时，使通信设备执行如第一方面、第二方面及其实施例中任一项所述的方法。
根据本公开实施例的第六方面，提供了一种存储介质。存储介质中存储有指令，该指令在通信设备中运行时使通信设备执行如第一方面、第二方面及其实施例中任一项所述的方法。
该存储介质存储有指令。指令在被处理器执行时执行如第一方面、第二方面及其实施例中任一项所述的方法。
根据本公开实施例的第七方面，提供了一种计算机程序或计算机程序产品。该计算机程序或计算机程序产品包括代码。指令在被处理器执行时执行如第一方面、第二方面及其实施例中任一项所述的方法。
通过本公开实施例以实现对PN进行准确的估计和补偿。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不构成对本公开实施例的限制。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明实施例，并与说明书一起用于解释本发明实施例的原理。
图1是根据本公开实施例提供的通信系统的一种架构示意图。
图2是根据本公开实施例提供的中心式本振架构下受PN影响的OFDM系统的示意图。
图3是根据本公开实施例提供的分布式本振架构下受PN影响的OFDM系统的示意图。
图4是根据本公开实施例提供的通信方法的一种示例性交互图。
图5A是根据本公开实施例提供的网络设备的一种结构示意图。
图5B是根据本公开实施例提供的网络设备的另一种结构示意图。
图6是根据本公开实施例提供的网络设备侧执行通信方法的一种示例性流程图。
图7是根据本公开实施例提供的终端侧执行通信方法的一种示例性流程图。
图8是根据本公开实施例提供的通信装置的一种示例性结构图。
图9是根据本公开实施例提供的通信设备的一种结构示意图。
具体实施方式
本公开实施例提供了一种通信方法和装置、通信设备及存储介质。
第一方面，本公开实施提供一种通信方法，由网络设备执行，该方法包括：发送配置信息，配置信息 用于指示下行PTRS端口的数量，下行PTRS用于对至少一个射频链所使用的本地振荡器产生的PN进行估计和补偿。
在本公开实施例中，网络设备向终端指示下行PTRS端口的数量，使得终端能够根据下行PTRS端口的数量，确定相应的下行PTRS的时频域密度配置。此时的时频域密度配置更有利于终端对PN进行准确的估计和补偿，提升系统整体性能。
结合第一方面的一些实施例，在一些实施例中，配置信息包括以下至少之一：下行PTRS端口的最大数量；传输配置指示(transmission configuration indication，TCI)状态的数量；解调参考信号(demodulation reference signal，DMRS)端口对应的码分复用(code division multiplexing，CDM)组的数量。
结合第一方面的一些实施例，在一些实施例中，发送配置信息，包括以下至少之一：发送下行PTRS配置信息，下行PTRS配置信息包括下行PTRS端口的最大数量和/或DMRS端口对应的CDM组的数量；发送下行控制信息(downlink control information，DCI)，DCI用于指示TCI状态的数量。
结合第一方面的一些实施例，在一些实施例中，下行PTRS端口的数量为1或N，N为大于或等于2的整数。
结合第一方面的一些实施例，在一些实施例中，在下行PTRS端口的最大数量配置为1的情况下，下行PTRS端口的数量为1。
结合第一方面的一些实施例，在一些实施例中，在下行PTRS端口的最大数量配置为N，且N等于2的情况下，当TCI状态的数量等于2以及DMRS端口对应的CDM组的数量等于2时，下行PTRS端口的数量为2；或，当TCI状态的数量等于1和/或DMRS端口对应的CDM组的数量等于1时，下行PTRS端口的数量为1。
结合第一方面的一些实施例，在一些实施例中，在下行PTRS端口的数量为2的情况下，2个下行PTRS端口分别与2个指示TCI状态的DMRS端口组中的最低索引DMRS端口关联。
结合第一方面的一些实施例，在一些实施例中，下行PTRS端口的数量为1对应于第一时频域密度配置；下行PTRS端口的数量为N对应于第二时频域密度配置。
结合第一方面的一些实施例，在一些实施例中，第二时频域密度配置包括：时域密度和频域密度；时域密度的取值为以下之一：6、4、2；频域密度的取值为以下之一：1、2。
结合第一方面的一些实施例，在一些实施例中，第二时频域密度配置包括以下至少之一：下行PTRS调度的调制和编码策略(modulation and coding scheme，MCS)大于或等于第一MCS阈值且小于第二MCS阈值，时域密度的取值为6；下行PTRS调度的MCS大于或等于第二MCS阈值且小于第三MCS阈值，时域密度的取值为4；下行PTRS调度的MCS大于或等于第三MCS阈值且小于第四MCS阈值，时域密度的取值为2。
结合第一方面的一些实施例，在一些实施例中，第二时频域密度配置包括以下至少之一：下行PTRS调度的带宽大于或等于第一带宽阈值且小于第二带宽阈值，频域密度的取值为1；下行PTRS调度的带宽大于或等于第二带宽阈值且小于第三带宽阈值，频域密度的取值为2。
第二方面，本公开实施提供一种通信方法，由终端执行，该方法包括：接收配置信息，配置信息用于指示下行PTRS端口的数量；基于下行PTRS端口的数量，确定下行PTRS的时频域密度配置；其中，下行PTRS用于对至少一个射频链所使用的本地振荡器产生的PN进行估计和补偿。
结合第二方面的一些实施例，在一些实施例中，配置信息包括以下至少之一：下行PTRS端口的最大数量；TCI状态的数量；DMRS端口对应的码CDM组的数量。
结合第二方面的一些实施例，在一些实施例中，接收配置信息，包括以下至少之一：接收下行PTRS配置信息，下行PTRS配置信息包括下行PTRS端口的最大数量和/或DMRS端口对应的CDM组的数量；接收DCI，DCI包括TCI状态的数量。
结合第二方面的一些实施例，在一些实施例中，下行PTRS端口的数量为1或N，N为大于或等于2的整数。
结合第二方面的一些实施例，在一些实施例中，在下行PTRS端口的最大数量配置为1的情况下，下行PTRS端口的数量配置为1。
结合第二方面的一些实施例，在一些实施例中，在下行PTRS端口的最大数量配置为N，且N等于2的情况下，当TCI状态的数量等于2以及DMRS端口对应的CDM组的数量等于2时，下行PTRS端口的数量为2；或，当TCI状态的数量等于1和/或或DMRS端口对应的CDM组的数量等于1时，下行PTRS端口的数量为1。
结合第二方面的一些实施例，在一些实施例中，在下行PTRS端口的数量为2的情况下，2个下行PTRS端口分别与2个指示TCI状态的DMRS端口组中的最低索引DMRS端口关联。
结合第二方面的一些实施例，在一些实施例中，基于下行PTRS端口的数量，确定下行PTRS的时频 域密度配置，包括：在下行PTRS端口的数量为1的情况下，确定时频域密度配置为第一时频域密度配置；或，在下行PTRS端口的数量为N的情况下，确定时频域密度配置为第二时频域密度配置。
在本公开实施例中，在不同的本振架构下，由于PN对发送信号产生的影响不同，终端进行PN估计和补偿时所需的下行PTRS的时频域密度配置范围不同。在中心式本振架构下，由于所有子载波上CPE占据相噪的主体，因此进行PN消除(也可以称为估计和补偿)需要PTRS的频域密度较小而时域密度大。在分布式本振架构下，由于新干扰项在不同子载波上造成的相位偏转不同，不能只消除CPE，因此进行PN消除需要PTRS的频域密度大，而时域密度则可以因为符号长度的缩短而减小。通过针对不同本振架构，配置不同的时频域密度配，使得终端在进行PN估计和补偿时能够更加准确，进一步提升系统性能。
结合第二方面的一些实施例，在一些实施例中，第二时频域密度配置包括：时域密度和频域密度；时域密度的取值为以下之一：6、4、2；频域密度的取值为以下之一：1、2。
结合第二方面的一些实施例，在一些实施例中，第二时频域密度配置包括以下至少之一：下行PTRS调度的MCS大于或等于第一MCS阈值且小于第二MCS阈值，时域密度的取值为6；下行PTRS调度的MCS大于或等于第二MCS阈值且小于第三MCS阈值，时域密度的取值为4；下行PTRS调度的MCS大于或等于第三MCS阈值且小于第四MCS阈值，时域密度的取值为2。
结合第二方面的一些实施例，在一些实施例中，第二时频域密度配置包括以下至少之一：下行PTRS调度的带宽大于或等于第一带宽阈值且小于第二带宽阈值，频域密度的取值为1；下行PTRS调度的带宽大于或等于第二带宽阈值且小于第三带宽阈值，频域密度的取值为2。
第三方面，本公开实施提供一种通信装置，可应用与网络设备，该通信装置包括：发送模块，被配置为发送配置信息，配置信息用于指示下行PTRS端口的数量，下行PTRS用于对至少一个射频链所使用的本地振荡器产生的PN进行估计和补偿。
结合第三方面的一些实施例，在一些实施例中，配置信息包括以下至少之一：下行PTRS端口的最大数量；TCI状态的数量；DMRS端口对应的CDM组的数量。
结合第三方面的一些实施例，在一些实施例中，发送模块，被配置为执行以下至少之一：发送下行PTRS配置信息，下行PTRS配置信息包括下行PTRS端口的最大数量和/或DMRS端口对应的CDM组的数量；发送DCI，DCI用于指示TCI状态的数量。
结合第三方面的一些实施例，在一些实施例中，下行PTRS端口的数量为1或N，N为大于或等于2的整数。
结合第三方面的一些实施例，在一些实施例中，在下行PTRS端口的最大数量配置为1的情况下，下行PTRS端口的数量为1。
结合第三方面的一些实施例，在一些实施例中，在下行PTRS端口的最大数量配置为N，且N等于2的情况下，当TCI状态的数量等于2以及DMRS端口对应的CDM组的数量等于2时，下行PTRS端口的数量为2；或，当TCI状态的数量等于1和/或DMRS端口对应的CDM组的数量等于1时，下行PTRS端口的数量为1。
结合第三方面的一些实施例，在一些实施例中，在下行PTRS端口的数量为2的情况下，2个下行PTRS端口分别与2个指示TCI状态的DMRS端口组中的最低索引DMRS端口关联。
结合第三方面的一些实施例，在一些实施例中，下行PTRS端口的数量为1对应于第一时频域密度配置；或，下行PTRS端口的数量为N对应于第二时频域密度配置。
结合第三方面的一些实施例，在一些实施例中，第二时频域密度配置包括：时域密度和频域密度；时域密度的取值为以下之一：6、4、2；频域密度的取值为以下之一：1、2。
结合第三方面的一些实施例，在一些实施例中，第二时频域密度配置包括以下至少之一：下行PTRS调度的MCS大于或等于第一MCS阈值且小于第二MCS阈值，时域密度的取值为6；下行PTRS调度的MCS大于或等于第二MCS阈值且小于第三MCS阈值，时域密度的取值为4；下行PTRS调度的MCS大于或等于第三MCS阈值且小于第四MCS阈值，时域密度的取值为2。
结合第三方面的一些实施例，在一些实施例中，第二时频域密度配置包括以下至少之一：下行PTRS调度的带宽大于或等于第一带宽阈值且小于第二带宽阈值，频域密度的取值为1；下行PTRS调度的带宽大于或等于第二带宽阈值且小于第三带宽阈值，频域密度的取值为2。
第四方面，本公开实施提供一种通信装置，可以应用与终端。该通信装置包括：接收模块，被配置为接收配置信息，配置信息用于指示下行PTRS端口的数量；处理模块，被配置为基于下行PTRS端口的数量，确定下行PTRS的时频域密度配置；其中，下行PTRS用于对至少一个射频链所使用的本地振荡器产生的PN进行估计和补偿。
结合第四方面的一些实施例，在一些实施例中，配置信息包括以下至少之一：下行PTRS端口的最大数量；TCI状态的数量；DMRS端口对应的码CDM组的数量。
结合第四方面的一些实施例，在一些实施例中，接收模块，被配置为执行以下至少之一：接收下行PTRS配置信息，下行PTRS配置信息包括下行PTRS端口的最大数量和/或DMRS端口对应的CDM组的数量；接收DCI，DCI包括TCI状态的数量。
结合第四方面的一些实施例，在一些实施例中，下行PTRS端口的数量为1或N，N为大于或等于2的整数。
结合第四方面的一些实施例，在一些实施例中，在下行PTRS端口的最大数量配置为1的情况下，下行PTRS端口的数量配置为1。
结合第四方面的一些实施例，在一些实施例中，在下行PTRS端口的最大数量配置为N，且N等于2的情况下，当TCI状态的数量等于2以及DMRS端口对应的CDM组的数量等于2时，下行PTRS端口的数量为2；或，当TCI状态的数量等于1和/或或DMRS端口对应的CDM组的数量等于1时，下行PTRS端口的数量为1。
结合第四方面的一些实施例，在一些实施例中，在下行PTRS端口的数量为2的情况下，2个下行PTRS端口分别与2个指示TCI状态的DMRS端口组中的最低索引DMRS端口关联。
结合第四方面的一些实施例，在一些实施例中，处理模块，被配置为在下行PTRS端口的数量为1的情况下，确定时频域密度配置为第一时频域密度配置；或，在下行PTRS端口的数量为N的情况下，确定时频域密度配置为第二时频域密度配置。
结合第四方面的一些实施例，在一些实施例中，第二时频域密度配置包括：时域密度和频域密度；时域密度的取值为以下之一：6、4、2；频域密度的取值为以下之一：1、2。
结合第四方面的一些实施例，在一些实施例中，第二时频域密度配置包括以下至少之一：下行PTRS调度的MCS大于或等于第一MCS阈值且小于第二MCS阈值，时域密度的取值为6；下行PTRS调度的MCS大于或等于第二MCS阈值且小于第三MCS阈值，时域密度的取值为4；下行PTRS调度的MCS大于或等于第三MCS阈值且小于第四MCS阈值，时域密度的取值为2。
结合第四方面的一些实施例，在一些实施例中，第二时频域密度配置包括以下至少之一：下行PTRS调度的带宽大于或等于第一带宽阈值且小于第二带宽阈值，频域密度的取值为1；下行PTRS调度的带宽大于或等于第二带宽阈值且小于第三带宽阈值，频域密度的取值为2。
在第五方面，本公开实施例提供了一种通信设备，如终端或网络设备。该通信设备包括：至少一个处理器；耦合于至少一个处理器的存储器，存储器存储有可执行指令，可执行指令被所述至少一个处理器执行时，使通信设备执行如第一方面、第二方面及其实施例中任一项所述的方法。
在第六方面，本公开实施例提供了一种存储介质。该存储介质中存储有指令。该指令在通信设备中运行时使通信设备执行如第一方面、第二方面及其实施例中任一项所述的方法。
在第七方面，提供了一种计算机程序或计算机程序产品。该计算机程序或计算机程序产品包括代码。指令在被处理器执行时执行如第一方面、第二方面及其实施例中任一项所述的方法。
可以理解地，上述通信装置、通信设备、存储介质、计算机程序、计算机程序产品均用于执行本公开实施例所提供的方法。因此，其所能达到的有益效果可以参考对应方法中的有益效果，此处不再赘述。
本公开实施例提出了一种通信方法和装置、通信设备及存储介质。在一些实施例中，通信方法与PTRS的配置方法、确定PTRS时频资源密度配置的方法、信息处理方法等术语可以相互替换，通信装置与PTRS配置装置、信息处理装置等术语可以相互替换。
本公开实施例并非穷举，仅为部分实施例的示意，不作为对本公开保护范围的具体限制。在不矛盾的情况下，某一实施例中的每个步骤均可以作为独立实施例来实施，且各步骤之间可以任意组合，例如，在某一实施例中去除部分步骤后的方案也可以作为独立实施例来实施，且在某一实施例中各步骤的顺序可以任意交换，另外，某一实施例中的可选实现方式可以任意组合；此外，各实施例之间可以任意组合，例如，不同实施例的部分或全部步骤可以任意组合，某一实施例可以与其他实施例的可选实现方式任意组合。
在各本公开实施例中，如果没有特殊说明以及逻辑冲突，各实施例之间的术语和/或描述具有一致性，且可以互相引用，不同实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
本公开实施例中所使用的术语只是为了描述特定实施例的目的，而并非作为对本公开的限制。
在本公开实施例中，除非另有说明，以单数形式表示的元素，如“一”、“一个”、“一种”、“该”、“上述”、“所述”、“前述”、“这一”等，可以表示“一个且只有一个”，也可以表示“一个或多个”、“至少一个”等。例如，在翻译中使用如英语中的“a”、“an”、“the”等冠词(article)的情况下，冠词之后的名词可以理解为单数表达形式，也可以理解为复数表达形式。
在本公开实施例中，“多个”是指两个或两个以上。
在一些实施例中，“至少一者(至少之一、至少一项、至少一个)(at least one of)”、“一个或多个(one or more)”等术语可以相互替换。
在一些实施例中，“A、B中的至少一者”、“A和/或B”、“在一情况下A，在另一情况下B”、“一情况A，另一情况B”等记载方式，根据情况可以包括以下技术方案：在一些实施例中A(与B无关地执行A)；在一些实施例中B(与A无关地执行B)；在一些实施例中从A和B中选择执行(A和B被选择性执行)；在一些实施例中A和B(A和B都被执行)。当有A、B、C等更多分支时也类似上述。
在一些实施例中，“A或B”等记载方式，根据情况可以包括以下技术方案：在一些实施例中A(与B无关地执行A)；在一些实施例中B(与A无关地执行B)；在一些实施例中从A和B中选择执行(A和B被选择性执行)。当有A、B、C等更多分支时也类似上述。
本公开实施例中的“第一”、“第二”等前缀词，仅仅为了区分不同的描述对象，不对描述对象的位置、顺序、优先级、数量或内容等构成限制，对描述对象的陈述参见权利要求或实施例中上下文的描述，不应因为使用前缀词而构成多余的限制。例如，描述对象为“字段”，则“第一字段”和“第二字段”中“字段”之前的序数词并不限制“字段”之间的位置或顺序，“第一”和“第二”并不限制其修饰的“字段”是否在同一个消息中，也不限制“第一字段”和“第二字段”的先后顺序。再如，描述对象为“等级”，则“第一等级”和“第二等级”中“等级”之前的序数词并不限制“等级”之间的优先级。再如，描述对象的数量并不受序数词的限制，可以是一个或者多个，以“第一装置”为例，其中“装置”的数量可以是一个或者多个。此外，不同前缀词修饰的对象可以相同或不同，例如，描述对象为“装置”，则“第一装置”和“第二装置”可以是相同的装置或者不同的装置，其类型可以相同或不同；再如，描述对象为“信息”，则“第一信息”和“第二信息”可以是相同的信息或者不同的信息，其内容可以相同或不同。
在一些实施例中，“包括A”、“包含A”、“用于指示A”、“携带A”，可以解释为直接携带A，也可以解释为间接指示A。
在一些实施例中，“……”、“确定……”、“在……的情况下”、“在……时”、“当……时”、“若……”、“如果……”等术语可以相互替换。
在一些实施例中，“大于”、“大于或等于”、“不小于”、“多于”、“多于或等于”、“不少于”、“高于”、“高于或等于”、“不低于”、“以上”等术语可以相互替换，“小于”、“小于或等于”、“不大于”、“少于”、“少于或等于”、“不多于”、“低于”、“低于或等于”、“不高于”、“以下”等术语可以相互替换。
在一些实施例中，装置等可以解释为实体的、也可以解释为虚拟的，其名称不限定于实施例中所记载的名称，“装置”、“设备(equipment)”、“设备(device)”、“电路”、“网元”、“节点”、“功能”、“单元”、“部件(section)”、“系统”、“网络”、“芯片”、“芯片系统”、“实体”、“主体”等术语可以相互替换。
在一些实施例中，“网络”可以解释为网络中包含的装置(例如，接入网设备、核心网设备、数据网设备等)。
在一些实施例中，“接入网设备(access network device，AN device)”、“无线接入网设备(radio access network device，RAN device)”、“基站(base station，BS)”、“无线基站(radio base station)”、“固定台(fixed station)”、“节点(node)”、“接入点(access point)”、“发送点(transmission point，TP)”、“接收点(reception point，RP)”、“发送接收点(transmission/reception point，TRP)”、“面板(panel)”、“天线面板(antenna panel)”、“天线阵列(antenna array)”、“小区(cell)”、“宏小区(macro cell)”、“小型小区(small cell)”、“毫微微小区(femto cell)”、“微微小区(pico cell)”、“扇区(sector)”、“小区组(cell group)”、“服务小区”、“载波(carrier)”、“分量载波(component carrier)”、“带宽部分(bandwidth part，BWP)”等术语可以相互替换。
在一些实施例中，“终端(terminal)”、“终端设备(terminal device)”、“用户设备(user equipment，UE)”、“用户终端(user terminal)”、“移动台(mobile station，MS)”、“移动终端(mobile terminal，MT)”、订户站(subscriber station)、移动单元(mobile unit)、订户单元(subscriber unit)、无线单元(wireless unit)、远程单元(remote unit)、移动设备(mobile device)、无线设备(wireless device)、无线通信设备(wireless communication device)、远程设备(remote device)、移动订户站(mobile subscriber station)、接入终端(access terminal)、移动终端(mobile terminal)、无线终端(wireless terminal)、远程终端(remote terminal)、手持设备(handset)、用户代理(user agent)、移动客户端(mobile client)、客户端(client)等术语可以相互替换。
在一些实施例中，接入网设备、核心网设备、或网络设备可以被替换为终端。例如，针对将接入网设备、核心网设备、或网络设备以及终端间的通信置换为多个终端间的通信(例如，设备对设备(device-to-device，D2D)、车联网(vehicle-to-everything，V2X)等)的结构，也可以应用本公开的各实施例。在该情况下，也可以设为终端具有接入网设备所具有的全部或部分功能的结构。此外，“上行”、“下行”等术语也可以被替换为与终端间通信对应的术语(例如，“侧行(side)”)。例如，上行信道、下行信 道等可以被替换为侧行信道，上行链路、下行链路等可以被替换为侧行链路。
在一些实施例中，终端可以被替换为接入网设备、核心网设备、或网络设备。在该情况下，也可以设为接入网设备、核心网设备、或网络设备具有终端所具有的全部或部分功能的结构。
在一些实施例中，接入网设备也可以被称为接入网功能、接入网元等。
在一些实施例中，核心网设备也可以被称为核心网功能、核心网、核心网元等。进一步地，在一些实施例中，核心网中的各网络设备也可以被称为网络功能、网元等。
在一些实施例中，获取数据、信息等可以遵照所在地国家的法律法规。
在一些实施例中，可以在得到用户同意后获取数据、信息等。
此外，本公开实施例的表格中的每一元素、每一行、或每一列均可以作为独立实施例来实施，任意元素、任意行、任意列的组合也可以作为独立实施例来实施。
图1是根据本公开实施例提供的通信系统的一种架构示意图。如图1所示，通信系统100包括终端101、网络设备102。网络设备102可以为接入网设备。
在一些实施例中，终端101例如包括手机(mobile phone)、可穿戴设备、物联网(internet of things，IoT)设备、具备通信功能的汽车、智能汽车、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self-driving)中的无线终端设备、远程手术(remote medical surgery)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备、智慧家庭(smart home)中的无线终端设备中的至少一者，但不限于此。
在一些实施例中，接入网设备，例如可以是将终端接入到无线网络的节点或设备，接入网设备可以包括5G通信系统中的演进节点B(evolved NodeB，eNB)、下一代演进节点B(next generation eNB，ng-eNB)、下一代节点B(next generation NodeB，gNB)、节点B(node B，NB)、家庭节点B(home node B，HNB)、家庭演进节点B(home evolved nodeB，HeNB)、无线回传设备、无线网络控制器(radio network controller，RNC)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、基带单元(base band unit，BBU)、移动交换中心、6G通信系统中的基站、开放型基站(Open RAN)、云基站(Cloud RAN)、卫星基站、其他通信系统中的基站、Wi-Fi系统中的接入节点中的至少一者，但不限于此。
在一些实施例中，本公开的技术方案可适用于Open RAN架构，此时，本公开实施例所涉及的网络设备内的接口可变为Open RAN的内部接口，这些内部接口之间的流程和信息交互可以通过软件或者程序实现。
在一些实施例中，接入网设备可以由集中单元(central unit，CU)与分布式单元(distributed unit，DU)组成的，其中，CU也可以称为控制单元(control unit)，采用CU-DU的结构可以将网络设备的协议层拆分开，部分协议层的功能放在CU集中控制，剩下部分或全部协议层的功能分布在DU中，由CU集中控制DU，但不限于此。
可以理解的是，本公开实施例描述的通信系统是为了更加清楚的说明本公开实施例的技术方案，并不构成对于本公开实施例提供的技术方案的限定，本领域普通技术人员可知，随着系统架构的演变和新业务场景的出现，本公开实施例提供的技术方案对于类似的技术问题同样适用。
下述本公开实施例可以应用于图1所示的通信系统100、或部分主体，但不限于此。图1所示的各主体是例示，通信系统可以包括图1中的全部或部分主体，也可以包括图1以外的其他主体，各主体数量和形态为任意，各主体之间的连接关系是例示，各主体之间可以不连接也可以连接，其连接可以是任意方式，可以是直接连接也可以是间接连接，可以是有线连接也可以是无线连接。
本公开各实施例可以应用于长期演进(Long Term Evolution，LTE)、LTE-Advanced(LTE-A)、LTE-Beyond(LTE-B)、SUPER 3G、IMT-Advanced、第四代移动通信系统(4th generation mobile communication system，4G)、)、第五代移动通信系统(5th generation mobile communication system，5G)、5G新空口(new radio，NR)、未来无线接入(Future Radio Access，FRA)、新无线(New Radio，NR)、新无线接入(New radio access，NX)、未来一代无线接入(Future generation radio access，FX)、Global System for Mobile communications(GSM(注册商标))、CDMA2000、超移动宽带(上行tra Mobile Broadband，UMB)、IEEE802.11(Wi-Fi(注册商标))、IEEE 802.16(WiMAX(注册商标))、IEEE 802.20、超宽带(上行tra-WideBand，UWB)、蓝牙(Bluetooth(注册商标))、陆上公用移动通信网(Public Land Mobile Network，PLMN)网络、设备到设备(Device-to-Device，D2D)系统、机器到机器(Machine to Machine，M2M)系统、物联网(Internet of Things，IoT)系统、车联网(Vehicle-to-Everything，V2X)、利用其他通信方法的系统、基于它们而扩展的下一代系统等。此外，也可以将多个系统组合(例如，LTE或者LTE-A与5G的组合等)应用。
毫米波频段具有巨大的可用带宽，能够提供极高的传输速率，并且波长很短从而有利于天线元件的集 成，这些优点使得毫米波无线通信技术的研究炙手可热。然而，毫米波也存在明显的缺陷，比如容易受到障碍物的阻挡、对PN十分敏感等。
在通信系统中，通常，网络设备通常采用中心式本振架构，即只采用一个本地振荡器(以下简称本振)，天线数目也较少。所有的DMRS天线端口都是相干端口，只需要一个PTRS端口。在中心式本振架构下，PN对OFDM信号的影响是两部分：一部分是导致所有子载波信号有一个相同的相位偏转，这称为公共相位误差(common phase error，CPE)；另一部分是受到相位噪声影响的相邻子载波上的值叠加到当前子载波信号上的干扰，称为子载波间干扰(inter-carrier interference，ICI)。
然而，随着无线通信技术的发展，通信系统中本振架构有所改变，引入了分布式本振架构。例如，大规模多进多出(multiple-in multipleout，MIMO)OFDM系统通常是采用分布式本振架构。在分布式本振架构中，每个射频链连接专用的本振，这导致不同射频链的发送信号经历相互独立的PN。如此，PN对OFDM信号的影响是三部分：第一部分为所有子载波上都有一个相同的相位旋转，即CPE；第二部分为被相位噪声影响的相邻的第m个子载波上的信号加在当前第k个子载波上，即ICI；第三部分为当前第k个子载波受到与子载波索引k有关的相位偏转，即不同子载波上受到的相位偏转不同，这是新的干扰项。可见，分布式本振架构下高频毫米波OFDM系统的PN消除算法中，不能像传统的中心式本振架构时只考虑消除CPE，PTRS的排布在频域上不应过于稀疏。此外，毫米波会使用更大的子载波间隔，时域符号将会大幅缩短，PN在时域上可能不再是逐符号改变，PTRS的排布在时域上可以不再过于密集。
由此可见，针对中心式本振架构和分布式本振架构，PTRS在频域和时域上排布的密度需求是不一样的。那么，针对不同的本振架构，终端如何实现对PN的估计和补偿是一个亟待解决的问题。
在本公开实施例进行进一步详细说明之前，对本公开实施例中涉及的名词和术语进行说明，本公开实施例中涉及的名词和术语适用于如下的解释。
一、相位噪声(PN)
PN是本地振荡器的相位与实际产生的载波信号相位之间的相位误差，这意味着本地振荡器产生的正弦波的相位会随时间而随机变化，并导致所产生载波的功率谱密度扩展。PN通常在频域内表征，偏离载波频率某一固定频率处的PN大小可以表示为在该频率处1Hz带宽内的噪声功率与载波信号功率的比值，单位是dBc/Hz。
在无线通信系统中，PN是在上变频和下变频位置处由于不完美的振荡器而被引入的。在离散时域中，PN的影响被观察为对OFDM信号的乘性噪声，基带信号与振荡器产生的高频率载波相乘进行频率上转换时引入PN，在接收机上带通信号进行下转换为基带的过程中，同样会引入接收机处的PN。
二、中心式本振架构
中心本振架构是指多个射频链(也可以称为射频链路)共用本振，所有发射天线上信号所乘的相位噪声相同，所有接收天线上信号所乘的相位噪声相同。
图2是根据本公开实施例提供的中心式本振架构下受PN影响的OFDM系统的示意图，如图2所示，假设每个天线意味着一个基带端口，OFDM系统使用多个天线来实现复用增益。发送端的基带处理单元211连接多根发送天线212，接收端的基带处理单元221连接多根接收天线222。基带信号的上变频过程中由于振荡器的非理想特性引入PN，经过多径信道并收到加性高斯白噪声影响后达到接收端。在接收端进行下变频的过程中同样会引入PN。由于采用中心式本振架构，所有发射天线(或者接收天线)上的信号所乘的PN相同。那么，PN对发送信号的影响包括CPE和ICI两项。
三、分布式本振架构
分布式本振架构是指多个射频连一一对应有专用的本振，不同的本振产生不同的PN。
图3是根据本公开实施例提供的分布式本振架构下受PN影响的OFDM系统的示意图，如图3所示，每个发送天线212(或者接收天线222)上信号所乘的PN不再相同，如发送天线212对应PN1i(i＝1、…、m、…、n，n为发送天线212的数量，m＜n)，接收天线222对应PN2j(j＝1、…、m、…、n，n为接收天线222的数量，m＜n)，PN1i或PN2j是相互独立，使得PN对发送信号的影响从原来的两项(CPE和ICI)变为了三项(CPE、ICI和新干扰项)，新干扰项的出现也让分布式本振架构下的PN变得更难追踪和补偿。
图4是根据本公开实施例提供的通信方法的一种示例性交互图。本公开实施例涉及通信方法，应用于通信系统100，其中包括接入网设备和终端。如图4所示，该方法包括步骤S410至步骤S420。
在步骤S410中，网络设备发送配置信息。
在一些实施例中，网络设备可以采用中心式本振架构，此时，N个射频链共用一个本振，N为大于或者等于2的整数。示例性的，图5A是根据本公开实施例提供的网络设备的一种结构示意图。如图5A所示，网络设备(如基站)的2个射频链51使用一个本振PN。此时，网络设备需要1个下行PTRS端口估计并补偿本振产生的PN。
在一些实施例中，网络设备可以采用分布式本振架构，此时，N个射频链与N个本振一一对应。示例 性的，图5B是根据本公开实施例提供的网络设备的另一种结构示意图。如图5B所示，以N＝2为例，网络设备(如基站)的2个射频链51使用各自的本振PN1和PN2，PN1和PN2相互独立。此时，网络设备需要2个下行PTRS端口分别估计并补偿各自本振产生的PN。示例性的，N>2，网络设备(如基站)的N个射频链使用各自的本振PN1、PN2、…PNN，PN1、PN2、…PNN相互独立。此时，网络设备需要N个下行PTRS端口分别估计并补偿各自本振产生的PN。在一些实施例中，N的取值可以为2、4、8、16等。
在一些实施例中，终端接收配置信息。
在一些实施例中，配置信息用于指示下行PTRS端口的数量。
在一些实施例中，下行PTRS用于对网络设备中1个或者N个本振产生的PN进行追踪和补偿。
在一些实施例中，配置信息包括以下至少之一：下行PTRS端口的最大数量、TCI状态的数量、DMRS端口对应的CDM组的数量。示例性的，下行PTRS端口的组最大数量可以为高层参数maxNrofPorts。
需要说明的还是，DMRS端口对应的CDM组也可以称为DMRS端口组。
在一些实施例中，下行PTRS端口的数量可以由无线资源控制(radio resource control，RRC)配置信息指示，也可以由RRC配置信息以及DCI共同指示。
在一些实施例中，网络设备发送下行PTRS配置信息(即RRC配置信息)。
在一实施例中，下行PTRS配置信息包括下行PTRS端口的最大数量。
在一实施例中，下行PTRS配置信息包括下行PTRS端口的最大数量以及DMRS端口对应的CDM组的数量。
在一些实施例中，网络设备发送DCI。在一实施例中，DCI包括TCI状态的数量。
在一些实施例中，在上述中心式本振架构下，网络设备可以具有1个下行PTRS端口。那么，网络设备可以采用1个下行PTRS端口发送下行PTRS。此时，配置信息指示的下行PTRS端口的数量即为1。
在一些实施例中，在上述分布式本振架构下，网络设备可以具有N个下行PTRS端口。那么，网络设备可以采用N个下行PTRS端口发送下行PTRS。此时，配置信息指示的下行PTRS端口的数量即为N。
在一些实施例中，由于PTRS端口个数与PN源的个数有关。在分布式本振架构的情况下，PN源的数量可以为N个，如2、4、8、16等，此时，下行PTRS端口的个数可以为N个，如2、4、8、16等。那么，网络设备在发送下行PTRS时可以采用2个下行PTRS端口，还可以采用4个下行PTRS端口、8个下行PTRS端、16个下行PTRS端口等。当然，随着通信系统的演进，通信设备中天线数量可以进一步增加，采用更大规模的天线阵列，那么，相应的下行PTRS端口的数量N也可以相应增加，因此，本公开实施例对下行PTRS端口的数量不做具体限定。
在步骤S420中，终端基于下行PTRS端口的数量，确定下行PTRS的时频域密度配置。
在一些实施例中，终端接收配置信息，并根据配置信息确定下行PTRS端口的数量。在一实施例中，终端根据下行PTRS端口的最大数量、TCI状态的数量、DMRS端口对应的CDM组的数量，确定下行PTRS端口的数量。
在一些实施例中，在下行PTRS端口的最大数量等配置为1的情况下，终端确定下行PTRS端口的数量为1。
在一些实施例中，在下行PTRS端口的最大数量配置为2，且TCI状态的数量和DMRS端口对应的CDM组的数量中的至少之一等于1的情况下，终端确定下行PTRS端口的数量为1。
在一些实施例中，终端在确定下行PTRS端口数量为1时，认为网络设备采用中心式本振架构。
在一些实施例中，在终端确定下行PTRS端口的数量为1的情况下，该下行PTRS端口与为物理下行共享信道(physical downlink share channel，PDSCH)分配的DMRS端口中的最低索引的DMRS端口关联。在一些实施例中，在下行PTRS端口的最大数量配置为2、TCI状态的数量等于2且DMRS端口对应的CDM组的数量等于2的情况下，终端确定下行PTRS端口的数量为2。
在一些实施例中，终端在确定下行PTRS端口数量为2时，认为网络设备采用分布式本振架构。
在一些实施例中，在终端确定下行PTRS端口的数量为2的情况下，2个下行PTRS端口分别与被指示的2个TCI状态(如第一TCI状态和第二TCI状态)的DMRS端口对应的CDM组中的最低索引DMRS端口关联。示例性的，在一种情况下，高层参数maxNrofPorts设置为1，此时，终端确定下行PTRS端口数量为1。在另一种情况下，高层参数maxNrofPorts设置为2，且DCI指示的TCI状态的数量以及DMRS端口对应的CDM组的数量均为2，此时，终端确定下行PTRS端口为2。那么。终端将接收到2个下行PTRS端口发送的下行PTRS。这2个下行PTRS端口分别与对应于2个TCI状态的DMRS端口对应的CDM组中的最低索引DMRS端口相关联。
需要说明的是，上述“被指示的2个TCI状态的DMRS端口对应的CDM组中的最低索引DMRS端口”还可以描述为：“被指示的2个TCI状态的DMRS端口中的最低索引DMRS端口”、“被指示的第一TCI状态和第二TCI状态对应的DMRS端口中的最低索引DMRS端口”等，本公开实施例不做具体限定。
示例性的，在一种情况下，高层参数maxNrofPorts配置为2，DCI指示的TCI状态的数量为1且DMRS端口对应的CDM组的数量为2，此时，终端确定下行PTRS端口数量为1。在另一种情况下，高层参数maxNrofPorts设置为2，DCI指示的TCI状态的数量为2且DMRS端口对应的CDM组的数量为1，此时，终端确定下行PTRS端口数量为1。
在一些实施例中，在下行PTRS端口的最大数量配置为4，且TCI状态的数量和DMRS端口对应的CDM组的数量中的至少之一等于1或2的情况下，终端确定下行PTRS端口的数量为1或2。
在一些实施例中，在下行PTRS端口的最大数量配置为4、TCI状态的数量等于4且DMRS端口对应的CDM组的数量等于4的情况下，终端确定下行PTRS端口的数量为4。
在一些实施例中，在终端确定下行PTRS端口的数量为4的情况下，4个下行PTRS端口分别与4个指示TCI状态的DMRS端口对应的CDM组中的最低索引DMRS端口关联。
示例性的，在一种情况下，高层参数maxNrofPorts设置为4，且DCI指示的TCI状态的数量以及DMRS端口对应的CDM组的数量均为4，此时，终端确定下行PTRS端口为4。那么。终端将接收到4个下行PTRS端口发送的下行PTRS。这4个下行PTRS端口分别与对应于4个TCI状态的DMRS端口对应的CDM组中的最低索引DMRS端口相关联。在另一种情况下，高层参数maxNrofPorts设置为4，DCI指示的TCI状态的数量为1或2且DMRS端口对应的CDM组的数量为4，此时，终端确定下行PTRS端口数量为1或2。在又一种情况下，高层参数maxNrofPorts设置为4，DCI指示的TCI状态的数量为4且DMRS端口对应的CDM组的数量为1或2，此时，终端确定下行PTRS端口数量为1或2。
在一些实施例中，在下行PTRS端口的最大数量配置为8，且TCI状态的数量和DMRS端口对应的CDM组的数量中的至少之一等于1、2或4的情况下，终端确定下行PTRS端口的数量为1、2或4。
在一些实施例中，在下行PTRS端口的最大数量配置为8、TCI状态的数量等于8且DMRS端口对应的CDM组的数量等于8的情况下，终端确定下行PTRS端口的数量为8。
在一些实施例中，在终端确定下行PTRS端口的数量为8的情况下，8个下行PTRS端口分别与8个指示TCI状态的DMRS端口对应的CDM组中的最低索引DMRS端口关联。
示例性的，在一种情况下，高层参数maxNrofPorts设置为8，且DCI指示的TCI状态的数量以及DMRS端口对应的CDM组的数量均为8，此时，终端确定下行PTRS端口为8。那么。终端将接收到8个下行PTRS端口发送的下行PTRS。这8个下行PTRS端口分别与对应于8个TCI状态的DMRS端口对应的CDM组中的最低索引DMRS端口相关联。在另一种情况下，高层参数maxNrofPorts设置为8，DCI指示的TCI状态的数量为1、2或4且DMRS端口对应的CDM组的数量为8，此时，终端确定下行PTRS端口数量为1、2或4。在又一种情况下，高层参数maxNrofPorts设置为8，DCI指示的TCI状态的数量为8且DMRS端口对应的CDM组的数量为1、2或4，此时，终端确定下行PTRS端口数量为1、2或4。
在一些实施例中，针对不同的PTRS端口的数量，下行PTRS的时频域密度配置是不同的。终端可以根据下行PTRS端口的数量确定对应的下行PTRS的时频域密度配置。
在一些实施例中，在下行PTRS端口的数量为1时，下行PTRS的时频域密度配置可以为第一时频域密度配置。由于在下行PTRS端口的数量为1时网络设备采用中心式本振架构，那么，具有第一时频域密度配置的下行PTRS在频域密度较小而时域密度较大。
在一些实施例中，在下行PTRS端口的数量为N时，下行PTRS的时频域密度配置可以为第二时频域密度配置。由于在下行PTRS端口的数量为N时，网络设备采用分布式本振架构，那么，具有第二时频域密度配置的下行PTRS在频域密度较大而时域密度较小。
在一些实施例中，下行PTRS的时频域密度配置包括时域密度和频域密度。第一时频域密度配置包括第一时域密度和第一频域密度。第二时频域密度配置包括第二时域密度和第二频域密度。
在一些实施例中，第一时频域密度配置包括第一时域密度和第一频域密度。其中，第一时域密度的取值为以下之一：4、2、1；第一频域密度的取值为以下之一：2、4。
在一些实施例中，终端可以根据下行PTRS调度的MSC，确定第一时域密度。示例性的，下行PTRS调度的MSC与第一时域密度的映射关系可以如下表1所示。其中，IMSC为下行PTRS调度的MSC的值，ptrs-MCSi(i＝1、2、3、4)分别为第一MSC阈值、第二MCS阈值、第三MCS阈值和第四MCS阈值。
在一些实施例中，终端可以根据下行PTRS调度的带宽，确定第一时域密度。示例性的，下行PTRS调度的带宽与第一频域密度的映射关系可以如下表2所示。其中，NRB为下行PTRS调度的带宽的值，NRbi(i＝0、1)分别为第一带宽阈值和第二带宽阈值。
表1
表2
在一些实施例中，第二时频域密度配置包括第二时域密度和第二频域密度。其中，第二时域密度的取值为以下之一：6、4、2；第二频域密度的取值为以下之一：1、2。
在一些实施例中，终端可以根据下行PTRS调度的MSC，确定第二时域密度。示例性的，下行PTRS调度的MSC与第二时域密度的映射关系可以如下表3所示。
在一些实施例中，终端可以根据下行PTRS调度的带宽，确定第二时域密度。示例性的，下行PTRS调度的带宽与第二频域密度的映射关系可以如下表4所示。
表3
表4
在一些实施例中，上述表格可以为RRC表格，即通过RRC信令向终端配置下行PTRS的时频域密度，如此，无需在DCI中新增额外的字段，只需要新增两张RRC表格，就可以实现不同本振架构下不同PTRS端口数量对应的PTRS时频域密度范围的指示，对通信协议的改动较小。另外，通过增加新的RRC表格，便可以针对不同的场景分别定义不同的PTRS时频域密度配置范围，可扩展性强。
本公开实施例所涉及的通信方法可以包括步骤S410至步骤S420中的至少一者。例如，步骤S410可以作为独立实施例来实施。例如，步骤S420可以作为独立实施例来实施。需要说明的是，步骤S410至步骤S420中的一个或多个步骤组成的可能的独立实施例不限于此。
在本公开实施例中，网络设备向终端指示下行PTRS端口的数量，使得终端能够根据下行PTRS端口的数量，确定相应的下行PTRS的时频域密度配置。此时的时频域密度配置更有利于终端对PN进行准确的估计和补偿，提升系统整体性能。
进一步地，在本公开实施例中，在不同的本振架构下，由于PN对发送信号产生的影响不同，终端进行PN估计和补偿时所需的下行PTRS的时频域密度配置范围不同。在中心式本振架构下，由于所有子载波上CPE占据相噪的主体，因此进行PN消除需要PTRS的频域密度较小而时域密度大。在分布式本振架构下，由于新干扰项在不同子载波上造成的相位偏转不同，不能只消除CPE，因此进行PN消除需要PTRS的频域密度大，而时域密度则可以因为符号长度的缩短而减小。通过针对不同本振架构，配置不同的时频 域密度配，使得终端能够更加准确地对PN进行估计和补偿，进一步提升系统性能。
在一些实施例中，信息等的名称不限定于实施例中所记载的名称，“信息(information)”、“消息
(message)”、“信号(signal)”、“信令(signaling)”、“报告(report)”、“配置(configuration)”、“指示(indication)”、“指令(instruction)”、“命令(command)”、“信道”、“参数(parameter)”、“域”、“字段”、“符号(symbol)”、“码元(symbol)”、“码本(codebook)”、“码字(codeword)”、“码点(codepoint)”、“比特(bit)”、“数据(data)”、“程序(program)”、“码片(chip)”等术语可以相互替换。
在一些实施例中，“时刻”、“时间点”、“时间”、“时间位置”等术语可以相互替换，“时长”、“时段”、“时间窗口”、“窗口”、“时间”等术语可以相互替换。
在一些实施例中，“获取”、“获得”、“得到”、“接收”、“传输”、“双向传输”、“发送和/或接收”可以相互替换，其可以解释为从其他主体接收，从协议中获取，从高层获取，自身处理得到、自主实现等多种含义。
在一些实施例中，“发送”、“发射”、“上报”、“下发”、“传输”、“双向传输”、“发送和/或接收”等术语可以相互替换。
在一些实施例中，“特定(certain)”、“预定(preset)”、“预设”、“设定”、“指示(indicated)”、“某一”、“任意”、“第一”等术语可以相互替换，“特定A”、“预定A”、“预设A”、“设定A”、“指示A”、“某一A”、“任意A”、“第一A”可以解释为在协议等中预先规定的A，也可以解释为通过设定、配置、或指示等得到的A，也可以解释为特定A、某一A、任意A、或第一A等，但不限于此。
在一些实施例中，判定或判断可以通过以1比特表示的值(0或1)来进行，也可以通过以真(true)或者假(false)表示的真假值(布尔值(boolean))来进行，也可以通过数值的比较(例如，与预定值的比较)来进行，但不限于此。
图6是根据本公开实施例提供的网络设备侧执行通信方法的一种示例性流程图。本公开实施例涉及通信方法，应用于网络设备。如图6所示，该方法包括步骤S610。
在步骤S610中，发送配置信息。
步骤S610的可选实现方式可以参见图4的步骤S410的可选方式、以及图4所涉及的实施例中其他关联部分，此处不再赘述。
在一些实施例中，网络设备(如接入网设备)向终端发送的配置信息，但不限于此，也可以向其他主体发送配置信息。
图7是根据本公开实施例提供的终端侧执行通信方法的一种示例性流程图。本公开实施例涉及通信方法，应用于终端。如图7所示，该方法包括步骤S710至步骤S720。
在步骤S710中，接收配置信息。
步骤S710的可选实现方式可以参见图4的步骤S410的可选方式、以及图4所涉及的实施例中其他关联部分，此处不再赘述。
在一些实施例中，终端接收网络设备(如接入网设备)发送的配置信息，但不限于此，也可以接收来自其他主体发送的配置信息。
在步骤S720中，基于下行PTRS端口的数量，确定下行PTRS的时频域密度配置。
步骤S720的可选实现方式可以参见图4的步骤S420的可选方式、以及图4所涉及的实施例中其他关联部分，此处不再赘述。
在本公开实施例涉及的通信方法中，为解决不同本振架构下的“PTRS端口个数指示”问题(问题1)和“各自的PTRS时频域密度范围指示”问题(问题2)，本公开实施例分别给出了具体的解决方案，使得PTRS的配置更有利于当前本振架构下PN的估计和补偿，提升系统整体性能。下面分别给出解决两个问题的技术方案及具体场景：
在一些实施例中，问题1中分布式本振架构在下行传输时需要向中终端指示PTRS端口个数以及关联的DMRS端口。出现此问题是因为PTRS端口个数与PN源的个数有关。当存在多个独立的PN源时，即分布式本振架构下的多个本振，每个PN源均需要一个PTRS端口用于对其进行PN估计。
那么，高层参数maxNrofPorts配置了每个TCI状态下的最大下行PTRS天线端口数。如果maxNrofPorts设置为1，那么调度的PTRS端口数就是1。如果maxNrofPorts设置为2，且DCI指示的TCI状态的数量以及DMRS端口对应的CDM组的数量都是2，则终端将接收两个PTRS端口，这两个PTRS端口分别与对应于2个TCI状态的DMRS端口组中的最低索引DMRS端口相关联。如果maxNrofPorts设置为2，DCI指示的TCI状态的数量为2，但DMRS端口对应的CDM组的数量为1，则终端将接收1个PTRS端口，该端口与为PDSCH分配的DMRS端口中的最低索引的DMRS端口关联。
下面是具体的示例：
网络设备(如接入网设备)侧以图5B所示的分布式本振架构为例，2个射频链使用各自的本振，因 此下行需要2个PTRS端口分别估计并补偿各自本振产生的PN。高层参数maxNrofPorts设置为2，且DCI指示的TCI状态的数量以及DMRS端口对应的CDM组的数量都是2，终端将接收两个PTRS端口，这两个PTRS端口分别与对应于2个指示TCI状态的DMRS端口组(可以记为第一DMRS端口组和第二DMRS端口组)中的最低索引DMRS端口相关联。
在一些实施例中，问题2中在不同本振架构下，需要不同的PTRS时频域密度配置范围。解决方案是在协议中为分布式本振架构增加新的PTRS时频域密度配置表格，如上述表3和表4。终端根据下行PTRS端口个数确定需要查找的是中心式本振架构对应的RRC表格(如上述表1和表2，可以参考3GPP TS 38.214中的表5.1.6.3-1-1和表5.1.6.3-2-1)还是分布式本振架构对应的RRC表格(如上述表3和表4)，再结合被调度的MCS和被调度的带宽在相应的表格中查找PTRS时频域密度。
下面是具体示例：
网络设备(如接入网设备)侧仍以图5B所示的分布式本振架构为例，2个射频链使用各自的本振，高层参数maxNrofPorts被设置为2，且DCI指示的TCI状态的数量以及DMRS端口对应的CDM组的数量都是2，终端将接收两个PTRS端口，这两个PTRS端口分别与对应于2个指示TCI状态的DMRS端口组(可以记为第一DMRS端口组和第二DMRS端口组)中的最低索引DMRS端口相关联。
终端在获知有2个PTRS端口需要接收时，认为网络设备侧是分布式本振架构，因此这两个PTRS端口的时频域密度将根据被调度的MCS和被调度的带宽，查表3和表4确定。
在本公开实施例中，部分或全部步骤、其可选实现方式可以与其他实施例中的部分或全部步骤任意组合，也可以与其他实施例的可选实现方式任意组合。
本公开实施例还提供用于实现以上任一方法的装置。例如，本公开实施例提供一种装置。上述装置包括用以实现以上任一种方法中终端所执行的各步骤的单元或模块。再如，还提供另一种装置，包括用以实现以上任一种方法中网络设备(例如，接入网设备、或者核心网设备等)所执行的各步骤的单元或模块。
应理解以上装置中各单元或模块的划分仅是一种逻辑功能的划分，在实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。此外，装置中的单元或模块可以以处理器调用软件的形式实现：例如装置包括处理器，处理器与存储器连接，存储器中存储有指令，处理器调用存储器中存储的指令，以实现以上任一种方法或实现上述装置各单元或模块的功能，其中处理器例如为通用处理器，例如中央处理单元(Central Processing Unit，CPU)或微处理器，存储器为装置内的存储器或装置外的存储器。或者，装置中的单元或模块可以以硬件电路的形式实现，可以通过对硬件电路的设计实现部分或全部单元或模块的功能，上述硬件电路可以理解为一个或多个处理器；例如，在一种实现中，上述硬件电路为专用集成电路(application-specific integrated circuit，ASIC)，通过对电路内元件逻辑关系的设计，实现以上部分或全部单元或模块的功能；再如，在另一种实现中，上述硬件电路为可以通过可编程逻辑器件(programmable logic device，PLD)实现，以现场可编程门阵列(Field Programmable Gate Array，FPGA)为例，其可以包括大量逻辑门电路，通过配置文件来配置逻辑门电路之间的连接关系，从而实现以上部分或全部单元或模块的功能。以上装置的所有单元或模块可以全部通过处理器调用软件的形式实现，或全部通过硬件电路的形式实现，或部分通过处理器调用软件的形式实现，剩余部分通过硬件电路的形式实现。
在本公开实施例中，处理器是一种具有信号处理能力的电路，在一种实现中，处理器可以是具有指令读取与运行能力的电路，例如中央处理单元(Central Processing Unit，CPU)、微处理器、图形处理器(graphics processing unit，GPU)(可以理解为一种微处理器)、或数字信号处理器(digital signal processor，DSP)等；在另一种实现中，处理器可以通过硬件电路的逻辑关系实现一定功能，上述硬件电路的逻辑关系是固定的或可以重构的，例如处理器为专用集成电路(application-specific integrated circuit，ASIC)或可编程逻辑器件(programmable logic device，PLD)实现的硬件电路,例如FPGA。在可重构的硬件电路中，处理器加载配置文档，实现硬件电路配置的过程，可以理解为处理器加载指令，以实现以上部分或全部单元或模块的功能的过程。此外，还可以是针对人工智能设计的硬件电路，其可以理解为一种ASIC，例如神经网络处理单元(Neural Network Processing Unit，NPU)、张量处理单元(Tensor Processing Unit，TPU)、深度学习处理单元(Deep learning Processing Unit，DPU)等。
图8是根据本公开实施例提供的通信装置的一种示例性结构图。如图8所示，通信装置800可以包括接收模块801、处理模块802、发送模块803中的至少一者。
在一些实施例中，通信装置800可以设置在网络设备中，此时，通信装置800包括发送模块803。
在一些实施例中，发送模块803，被配置为发送配置信息，配置信息用于指示下行PTRS端口的数量，下行PTRS用于对至少一个射频链所使用的本地振荡器产生的PN进行估计和补偿。
在一些实施例中，配置信息包括以下至少之一：下行PTRS端口的最大数量；TCI状态的数量；DMRS端口对应的CDM组的数量。
在一些实施例中，发送模块803，被配置为执行以下至少之一：发送下行PTRS配置信息，下行PTRS 配置信息包括下行PTRS端口的最大数量和/或DMRS端口对应的CDM组的数量；发送DCI，DCI用于指示TCI状态的数量。
在一些实施例中，下行PTRS端口的数量为1或N，N为大于或者等于2的整数。
在一些实施例中，在下行PTRS端口的最大数量配置为1的情况下，下行PTRS端口的数量为1。
在一些实施例中，在下行PTRS端口的最大数量配置为N，且N＝2的情况下，当TCI状态的数量等于2以及DMRS端口对应的CDM组的数量等于2时，下行PTRS端口的数量为2；或，当TCI状态的数量等于1和/或DMRS端口对应的CDM组的数量等于1时，下行PTRS端口的数量为1。
在一些实施例中，在下行PTRS端口的数量为2的情况下，2个下行PTRS端口分别与2个指示TCI状态的DMRS端口组中的最低索引DMRS端口关联。
在一些实施例中，下行PTRS端口的数量为1对应于第一时频域密度配置；或，下行PTRS端口的数量为N对应于第二时频域密度配置。
在一些实施例中，第二时频域密度配置包括：时域密度和频域密度；时域密度的取值为以下之一：6、4、2；频域密度的取值为以下之一：1、2。
在一些实施例中，第二时频域密度配置包括以下至少之一：下行PTRS调度的MCS大于或等于第一MCS阈值且小于第二MCS阈值，时域密度的取值为6；下行PTRS调度的MCS大于或等于第二MCS阈值且小于第三MCS阈值，时域密度的取值为4；下行PTRS调度的MCS大于或等于第三MCS阈值且小于第四MCS阈值，时域密度的取值为2。
在一些实施例中，第二时频域密度配置包括以下至少之一：下行PTRS调度的带宽大于或等于第一带宽阈值且小于第二带宽阈值，频域密度的取值为1；下行PTRS调度的带宽大于或等于第二带宽阈值且小于第三带宽阈值，频域密度的取值为2。
在一些实施例中，通信装置800可以设置在终端中，此时，通信装置800包括接收模块801和处理模块802。
在一些实施例中，接收模块801，被配置为接收配置信息，配置信息用于指示下行PTRS端口的数量；处理模块802，被配置为基于下行PTRS端口的数量，确定下行PTRS的时频域密度配置；其中，下行PTRS用于对至少一个射频链所使用的本地振荡器产生的PN进行估计和补偿。
在一些实施例中，配置信息包括以下至少之一：下行PTRS端口的最大数量；TCI状态的数量；DMRS端口对应的码CDM组的数量。
在一些实施例中，接收模块801，被配置为执行以下至少之一：接收下行PTRS配置信息，下行PTRS配置信息包括下行PTRS端口的最大数量和/或DMRS端口对应的CDM组的数量；接收DCI，DCI包括TCI状态的数量。
在一些实施例中，下行PTRS端口的数量为1或N，N为大于或者等于2的整数。
在一些实施例中，在下行PTRS端口的最大数量配置为1的情况下，下行PTRS端口的数量配置为1。
在一些实施例中，在下行PTRS端口的最大数量配置为N，且N＝2的情况下，当TCI状态的数量等于2以及DMRS端口对应的CDM组的数量等于2时，下行PTRS端口的数量为2；或，当TCI状态的数量等于1和/或或DMRS端口对应的CDM组的数量等于1时，下行PTRS端口的数量为1。
在一些实施例中，在下行PTRS端口的数量为2的情况下，2个下行PTRS端口分别与2个指示TCI状态的DMRS端口组中的最低索引DMRS端口关联。
在一些实施例中，处理模块802，被配置为在下行PTRS端口的数量为1的情况下，确定时频域密度配置为第一时频域密度配置；或，在下行PTRS端口的数量为N的情况下，确定时频域密度配置为第二时频域密度配置。
在一些实施例中，第二时频域密度配置包括：时域密度和频域密度；时域密度的取值为以下之一：6、4、2；频域密度的取值为以下之一：1、2。
在一些实施例中，第二时频域密度配置包括以下至少之一：下行PTRS调度的MCS大于或等于第一MCS阈值且小于第二MCS阈值，时域密度的取值为6；下行PTRS调度的MCS大于或等于第二MCS阈值且小于第三MCS阈值，时域密度的取值为4；下行PTRS调度的MCS大于或等于第三MCS阈值且小于第四MCS阈值，时域密度的取值为2。
在一些实施例中，第二时频域密度配置包括以下至少之一：下行PTRS调度的带宽大于或等于第一带宽阈值且小于第二带宽阈值，频域密度的取值为1；下行PTRS调度的带宽大于或等于第二带宽阈值且小于第三带宽阈值，频域密度的取值为2。
图9是根据本公开实施例提供的通信设备的一种结构示意图。通信设备900可以是网络设备(例如，接入网设备)，也可以是终端，也可以是支持网络设备实现以上任一种方法的芯片、芯片系统、或处理器等，还可以是支持终端实现以上任一种通信方法的芯片、芯片系统、或处理器等。通信设备900可用于实 现上述方法实施例中描述的通信方法，具体可以参见上述方法实施例中的说明。
如图9所示，通信设备900包括一个或多个处理器901。处理器901可以是通用处理器或者专用处理器等，例如可以是基带处理器或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对通信装置(如，基站、基带芯片，终端设备、终端设备芯片，DU或CU等)进行控制，执行程序，处理程序的数据。处理器901用于调用指令以使得通信设备900执行以上任一种通信方法。
在一些实施例中，通信设备900还包括用于存储指令的一个或多个存储器902。可选地，全部或部分存储器902也可以处于通信设备900之外。
在一些实施例中，通信设备900还包括一个或多个收发器903。在通信设备900包括一个或多个收发器903时，上述方法中的发送接收等通信步骤由收发器903执行，其他步骤由处理器901执行。
在一些实施例中，收发器可以包括接收器和发送器，接收器和发送器可以是分离的，也可以集成在一起。可选地，收发器、收发单元、收发机、收发电路等术语可以相互替换，发送器、发送单元、发送机、发送电路等术语可以相互替换，接收器、接收单元、接收机、接收电路等术语可以相互替换。
可选地，通信设备900还包括一个或多个接口电路904，接口电路904与存储器902连接，接口电路904可用于从存储器902或其他装置接收信号，可用于向存储器902或其他装置发送信号。例如，接口电路904可读取存储器902中存储的指令，并将该指令发送给处理器901。
以上实施例描述中的通信设备900可以是接入网设备、核心网设备、外网设备或者终端，但本公开实施例中描述的通信设备900的范围并不限于此，通信设备900的结构可以不受图9的限制。通信设备可以是独立的设备或者可以是较大设备的一部分。例如所述通信设备可以是：(1)独立的集成电路IC，或芯片，或，芯片系统或子系统；(2)具有一个或多个IC的集合，可选地，上述IC集合也可以包括用于存储数据，程序的存储部件；(3)ASIC，例如调制解调器(Modem)；(4)可嵌入在其他设备内的模块；(5)接收机、终端设备、智能终端设备、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等；(6)其他设备。
本公开实施例还提供一种存储介质，上述存储介质上存储有指令，当上述指令在通信设备900上运行时，使得通信设备900执行以上任一种通信方法。可选地，上述存储介质是电子存储介质。可选地，上述存储介质是计算机可读存储介质，但也可以是其他装置可读的存储介质。可选地，上述存储介质可以是非暂时性(non-transitory)存储介质，但也可以是暂时性存储介质。
本公开实施例还提供一种程序产品，上述程序产品被通信设备900执行时，使得通信设备900执行以上任一种通信方法。可选地，上述程序产品是计算机程序产品。
本公开实施例还提供一种计算机程序，当其在计算机上运行时，使得计算机执行以上任一种通信方法。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本发明的其它实施方案。本公开旨在涵盖本发明的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本发明的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本发明的真正范围和精神由下面的权利要求指出。
应当理解的是，本发明并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本发明的范围仅由所附的权利要求来限制。

Claims (26)

  1. 一种通信方法，由网络设备执行，所述方法包括：
    发送配置信息，所述配置信息用于指示下行相位跟踪参考信号PTRS端口的数量，下行PTRS用于对至少一个射频链所使用的本地振荡器产生的相位噪声PN进行估计和补偿。
  2. 根据权利要求1所述的方法，其中，所述配置信息包括以下至少之一：
    下行PTRS端口的最大数量；
    传输配置指示TCI状态的数量；
    解调参考信号DMRS端口对应的码分复用CDM组的数量。
  3. 根据权利要求2所述的方法，其中，所述发送配置信息，包括以下至少之一：
    发送下行PTRS配置信息，所述下行PTRS配置信息包括所述下行PTRS端口的最大数量和/或所述DMRS端口对应的CDM组的数量；
    发送下行控制信息DCI，所述DCI用于指示所述TCI状态的数量。
  4. 根据权利要求1至3任一项所述的方法，其中，所述下行PTRS端口的数量为1或N，N为大于或等于2的整数。
  5. 根据权利要求4所述的方法，其中，在下行PTRS端口的最大数量配置为1的情况下，所述下行PTRS端口的数量为1。
  6. 根据权利要求4所述的方法，其中，在下行PTRS端口的最大数量配置为N，且N等于2的情况下，
    当TCI状态的数量等于2以及DMRS端口对应的CDM组的数量等于2时，所述下行PTRS端口的数量为2；或，
    当TCI状态的数量等于1和/或DMRS端口对应的CDM组的数量等于1时，所述下行PTRS端口的数量为1。
  7. 根据权利要求6所述的方法，其中，在所述下行PTRS端口的数量为2的情况下，2个下行PTRS端口分别与2个指示TCI状态的DMRS端口组中的最低索引DMRS端口关联。
  8. 根据权利要求4至7任一项所述的方法，其中，所述下行PTRS端口的数量为1对应于第一时频域密度配置；或，所述下行PTRS端口的数量为N对应于第二时频域密度配置。
  9. 根据权利要求8所述的方法，其中，所述第二时频域密度配置包括：时域密度和频域密度；所述时域密度的取值为以下之一：6、4、2；所述频域密度的取值为以下之一：1、2。
  10. 根据权利要求9所述的方法，其中，所述第二时频域密度配置包括以下至少之一：
    所述下行PTRS调度的调制和编码策略MCS大于或等于第一MCS阈值且小于第二MCS阈值，所述时域密度的取值为6；
    所述下行PTRS调度的MCS大于或等于第二MCS阈值且小于第三MCS阈值，所述时域密度的取值为4；
    所述下行PTRS调度的MCS大于或等于第三MCS阈值且小于第四MCS阈值，所述时域密度取值为2。
  11. 根据权利要求9所述的方法，其中，所述第二时频域密度配置包括以下至少之一：
    所述下行PTRS调度的带宽大于或等于第一带宽阈值且小于第二带宽阈值，所述频域密度的取值为1；
    所述下行PTRS调度的带宽大于或等于第二带宽阈值且小于第三带宽阈值，所述频域密度的取值为2。
  12. 一种通信方法，由终端执行，所述方法包括：
    接收配置信息，所述配置信息用于指示下行相位跟踪参考信号PTRS端口的数量；
    基于所述下行PTRS端口的数量，确定下行PTRS的时频域密度配置；
    其中，所述下行PTRS用于对至少一个射频链所使用的本地振荡器产生的相位噪声PN进行估计和补偿，所述射频链与所述本地振荡器一一对应。
  13. 根据权利要求12所述的方法，其中，所述配置信息包括以下至少之一：
    下行PTRS端口的最大数量；
    传输配置指示TCI状态的数量；
    解调参考信号DMRS端口对应的码分复用CDM组的数量。
  14. 根据权利要求13所述的方法，其中，所述接收配置信息，包括以下至少之一：
    接收下行PTRS配置信息，所述下行PTRS配置信息包括所述下行PTRS端口的最大数量和/或所述DMRS端口对应的CDM组的数量；
    接收DCI，所述DCI包括所述TCI状态的数量。
  15. 根据权利要求12至14任一项所述的方法，其中，所述下行PTRS端口的数量为1或N，N为大 于或等于2的整数。
  16. 根据权利要求15所述的方法，其中，在下行PTRS端口的最大数量配置为1的情况下，所述下行PTRS端口的数量配置为1。
  17. 根据权利要求15所述的方法，其中，在下行PTRS端口的最大数量配置为N，且N等于2的情况下，
    当TCI状态的数量等于2以及DMRS端口对应的CDM组的数量等于2时，所述下行PTRS端口的数量为2；或，
    当TCI状态的数量等于1和/或或DMRS端口对应的CDM组的数量等于1时，所述下行PTRS端口的数量为1。
  18. 根据权利要求17所述的方法，其中，在所述下行PTRS端口的数量为2的情况下，2个下行PTRS端口分别与2个指示TCI状态的DMRS端口组中的最低索引DMRS端口关联。
  19. 根据权利要求15至18任一项所述的方法，其中，所述基于所述下行PTRS端口的数量，确定下行PTRS的时频域密度配置，包括：
    在所述下行PTRS端口的数量为1的情况下，确定所述时频域密度配置为第一时频域密度配置；或，
    在所述下行PTRS端口的数量为N的情况下，确定所述时频域密度配置为第二时频域密度配置。
  20. 根据权利要求19所述的方法，其中，所述第二时频域密度配置包括：时域密度和频域密度；所述时域密度的取值为以下之一：6、4、2；所述频域密度的取值为以下之一：1、2。
  21. 根据权利要求20所述的方法，其中，所述第二时频域密度配置包括以下至少之一：
    所述下行PTRS调度的调制和编码策略MCS大于或等于第一MCS阈值且小于第二MCS阈值，所述时域密度的取值为6；
    所述下行PTRS调度的MCS大于或等于第二MCS阈值且小于第三MCS阈值，所述时域密度的取值为4；
    所述下行PTRS调度的MCS大于或等于第三MCS阈值且小于第四MCS阈值，所述时域密度的取值为2。
  22. 根据权利要求20所述的方法，其中，所述第二时频域密度配置包括以下至少之一：
    所述下行PTRS调度的带宽大于或等于第一带宽阈值且小于第二带宽阈值，所述频域密度的取值为1；
    所述下行PTRS调度的带宽大于或等于第二带宽阈值且小于第三带宽阈值，所述频域密度的取值为2。
  23. 一种通信装置，包括：
    发送模块，被配置为发送配置信息，所述配置信息用于指示下行相位跟踪参考信号PTRS端口的数量，下行PTRS用于对至少一个射频链所使用的本地振荡器产生的相位噪声PN进行估计和补偿，所述射频链与所述本地振荡器一一对应。
  24. 一种通信装置，包括：
    接收模块，被配置为接收配置信息，所述配置信息用于指示下行相位跟踪参考信号PTRS端口的数量；
    处理模块，被配置为基于所述下行PTRS端口的数量，确定下行PTRS的时频域密度配置；
    其中，所述下行PTRS用于对至少一个射频链所使用的本地振荡器产生的相位噪声PN进行估计和补偿，所述射频链与所述本地振荡器一一对应。
  25. 一种通信设备，包括：
    至少一个处理器；
    耦合于所述至少一个处理器的存储器，所述存储器存储有可执行指令，所述可执行指令被所述至少一个处理器执行时，使所述通信设备执行如权利要求1至22中任一项所述的方法。
  26. 一种存储介质，其中，所述存储介质中存储有指令，所述指令在通信设备中运行时使所述通信设备执行如权利要求1至22中任一项所述的方法。
PCT/CN2023/112704 2023-08-11 2023-08-11 通信方法和装置、通信设备及存储介质 Pending WO2025035304A1 (zh)

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