Uplink communication method and apparatus

Abstract

The embodiment of the present disclosure discloses an uplink communication method and device, which determines the time domain position or frequency domain position of a terminal sending a demodulation reference signal (DMRS), determines the sequence value of the DMRS sent at each time domain position or frequency domain position, and sends the DMRS to a network device on a physical uplink shared channel (PUSCH) based on orthogonal cover code (OCC) multi-user multiplexing, so that the terminal can process the corresponding DMRS sequence value at the time domain position that is originally to be sent but is muted due to OCC multiplexing, ensure the orthogonality of DMRS between different users for OCC multi-user multiplexing, reduce the interference between users and improve the accuracy of channel estimation, effectively improve the communication efficiency of the system, and improve the spectrum and resource utilization.

Description

Uplink communication method and device TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to an uplink communication method and device. BACKGROUND

[0002] In order to improve uplink (UL) coverage and enable a cell to serve more users simultaneously, multi-user multiplexing based on an orthogonal cover code (OCC) can be considered to achieve uplink capacity enhancement.

[0003] SUMMARY

[0004] Embodiments of the present disclosure provide an uplink communication method and device.

[0005] In a first aspect, an uplink communication method is provided, which is performed by a terminal, and includes:

[0006] determining a time domain position or a frequency domain position of a demodulation reference signal (DMRS) to be sent by the terminal;

[0007] determining a sequence value of the DMRS to be sent at each of the time domain position or the frequency domain position;

[0008] sending the DMRS to a network device on a physical uplink shared channel (PUSCH) based on OCC multi-user multiplexing.

[0009] In a second aspect, an uplink communication method is provided, which is performed by a network device, and includes:

[0010] receiving a demodulation reference signal (DMRS) sent by a terminal on a physical uplink shared channel (PUSCH) based on OCC multi-user multiplexing;

[0011] wherein, before sending the DMRS, the terminal determines a time domain position or a frequency domain position of the DMRS, and determines a sequence value of the DMRS to be sent at each of the time domain position or the frequency domain position.

[0012] In a third aspect, a terminal is provided, which includes:

[0013] a processing module configured to determine a time domain position or a frequency domain position of a demodulation reference signal (DMRS) to be sent by the terminal;

[0014] The processing module is further configured to determine a sequence value of the DMRS to be sent at each of the time domain position or the frequency domain position.

[0015] transmit, to a network device, a demodulation reference signal DMRS on a physical uplink shared channel PUSCH based on orthogonal cover code OCC multi-user multiplexing.

[0016] A fourth aspect of the present disclosure provides a network device, comprising:

[0017] a transceiver configured to receive a demodulation reference signal DMRS transmitted by a terminal on a physical uplink shared channel PUSCH based on orthogonal cover code OCC multi-user multiplexing.

[0018] Before transmitting the DMRS, the terminal determines a time domain position or a frequency domain position of the DMRS, and determines a sequence value of the DMRS transmitted at each time domain position or frequency domain position.

[0019] The scheme provided by the embodiments of the present disclosure determines a time domain position or a frequency domain position of a demodulation reference signal DMRS transmitted by a terminal, determines a sequence value of the DMRS transmitted at each time domain position or frequency domain position, and transmits the DMRS to a network device on a physical uplink shared channel PUSCH based on orthogonal cover code OCC multi-user multiplexing, so that the terminal can process the corresponding DMRS sequence value at the time domain position that is originally to be transmitted but is muted due to OCC multiplexing, ensure the orthogonality of DMRS between different users for OCC multi-user multiplexing, reduce the interference between users and improve the accuracy of channel estimation, effectively improve the communication efficiency of the system, and improve the spectrum and resource utilization. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the background art, the drawings needed to be used in the embodiments of the present disclosure or the background art will be described below.

[0021] FIG. 1A is a schematic diagram of an architecture of a communication system provided by an embodiment of the present disclosure;

[0022] FIG. 1B is a schematic diagram of a TDM DMRS orthogonalization method provided by an embodiment of the present disclosure;

[0023] FIG. 2A is an interaction diagram of an uplink communication method provided by an embodiment of the present disclosure;

[0024] FIG. 3A is a flow diagram of an uplink communication method provided by an embodiment of the present disclosure;

[0025] FIG. 4A is a flow diagram of an uplink communication method provided by an embodiment of the present disclosure;

[0026] FIG. 5 is a flow diagram of an uplink communication method provided by an embodiment of the present disclosure;

[0027] FIG. 6A is a structural schematic diagram of a terminal according to an embodiment of the present disclosure;

[0028] FIG. 6B is a structural schematic diagram of a network device according to an embodiment of the present disclosure;

[0029] FIG. 7A is a structural schematic diagram of a communication device according to an embodiment of the present disclosure;

[0030] FIG. 7B is a structural schematic diagram of a chip according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] Embodiments of the present disclosure provide an uplink communication method and device.

[0032] In a first aspect, embodiments of the present disclosure provide an uplink communication method, which comprises:

[0033] determining a time domain position or a frequency domain position at which a terminal transmits a demodulation reference signal (DMRS);

[0034] determining a sequence value of the DMRS transmitted at each of the time domain position or the frequency domain position;

[0035] transmitting the DMRS to a network device on a physical uplink shared channel (PUSCH) based on orthogonal cover code (OCC) multi-user multiplexing.

[0036] In the above embodiments, the terminal can process the sequence value of the DMRS at the time domain position that is originally to be transmitted but is muted due to OCC multiplexing, thereby ensuring the orthogonality of the DMRS between different users subjected to OCC multi-user multiplexing, reducing the interference between users and improving the accuracy of channel estimation, effectively improving the communication efficiency of the system and improving the spectrum and resource utilization.

[0037] In some embodiments in combination with the first aspect, in some embodiments, the determination of the time domain position at which the terminal transmits the DMRS comprises:

[0038] determining the number of a time slot in which the time domain position at which the terminal transmits the DMRS is located based on a first value;

[0039] wherein the DMRS is transmitted based on a single subcarrier, and the DMRS of the terminal is time division multiplexed (TDM) with the DMRS of other terminals in the same OCC multiplexed user group;

[0040] the first value is indicated by the network device, or the first value is predefined;

[0041] the time-frequency domain resources of the PUSCH corresponding to the terminals in the same user group are the same.

[0042] In some embodiments of the first aspect, in some embodiments, the determining the frequency domain position at which the terminal transmits the DMRS comprises:

[0043] determining, based on the second value, a number of a subcarrier at which the time domain position at which the DMRS is transmitted is located;

[0044] The DMRS is transmitted based on multiple subcarriers, and the DMRS of the terminal is frequency division multiplexed (FDM) with the DMRS corresponding to other terminals in the same OCC multiplexing user group.

[0045] The second value is indicated by the network device, or the second value is predefined.

[0046] The time-frequency domain resources of the PUSCH corresponding to the terminals in the same user group are the same.

[0047] In some embodiments of the first aspect, in some embodiments, the first value is one of:

[0048] The length of the OCC;

[0049] A value determined based on the length of the OCC;

[0050] The number of multiplexing users of the OCC;

[0051] A value determined based on the number of multiplexing users of the OCC;

[0052] The maximum number of multiplexing users of the OCC;

[0053] A value determined based on the maximum number of multiplexing users of the OCC.

[0054] In some embodiments of the first aspect, in some embodiments, the second value is one of:

[0055] The length of the OCC;

[0056] A value determined based on the length of the OCC;

[0057] The number of multiplexing users of the OCC;

[0058] A value determined based on the number of multiplexing users of the OCC;

[0059] The maximum number of multiplexing users of the OCC;

[0060] A value determined based on the maximum number of multiplexing users of the OCC.

[0061] In some embodiments of the first aspect, in some embodiments, the determining the sequence value of the DMRS transmitted at each of the time domain positions or the frequency domain positions comprises:

[0062] determining the sequence value of the DMRS based on the number of the subcarrier where the DMRS is sent; or

[0063] determining the sequence value of the DMRS based on the number of the subcarrier where the DMRS is sent.

[0064] In some embodiments of the first aspect, determining the sequence value of the DMRS sent at each of the time domain positions or frequency domain positions comprises:

[0065] determining the sequence value of the DMRS based on the order of the DMRS in the plurality of DMRSs actually sent by the terminal.

[0066] In some embodiments of the first aspect, determining the sequence value of the DMRS based on the order of the DMRS in the plurality of DMRSs actually sent by the terminal comprises:

[0067] determining the sequence value of the DMRS based on formula (1) or formula (2):

[0068] In some embodiments of the first aspect, the first number corresponding to different terminals in the same user group is different; or

[0069] the second number corresponding to different terminals in the same user group is different.

[0070] In a second aspect, the disclosure provides an uplink communication method, the method comprising:

[0071] receiving a demodulation reference signal (DMRS) sent by a terminal on a physical uplink shared channel (PUSCH) based on orthogonal cover code (OCC) multi-user multiplexing;

[0072] Before sending the DMRS, the terminal determines the time domain position or frequency domain position of the DMRS, and determines the sequence value of the DMRS sent at each of the time domain positions or frequency domain positions.

[0073] In the above embodiments, the terminal can process the sequence value of the DMRS at the time domain position where the DMRS is originally to be sent but is muted due to OCC multiplexing, ensuring the orthogonality of DMRSs between different users subjected to OCC multi-user multiplexing, reducing inter-user interference and improving the accuracy of channel estimation, effectively improving the communication efficiency of the system and improving the spectrum and resource utilization.

[0074] In some embodiments of the second aspect, the terminal determines a number of a time slot in which the time domain position of the DMRS is located based on the first value.

[0075] The DMRS is transmitted based on a single subcarrier, and the DMRS of the terminal is time-division multiplexed (TDM) with the DMRS corresponding to other terminals in the same OCC multiplexing user group.

[0076] The first value is indicated by the network device, or the first value is predefined.

[0077] The time-frequency domain resources of the PUSCH corresponding to the terminals in the same user group are the same.

[0078] In some embodiments of the second aspect, the terminal determines a number of a subcarrier in which the time domain position of the DMRS is located based on the second value.

[0079] The DMRS is transmitted based on a plurality of subcarriers, and the DMRS of the terminal is frequency-division multiplexed (FDM) with the DMRS corresponding to other terminals in the same OCC multiplexing user group.

[0080] The second value is indicated by the network device, or the second value is predefined.

[0081] The time-frequency domain resources of the PUSCH corresponding to the terminals in the same user group are the same.

[0082] In some embodiments of the second aspect, the first value is one of:

[0083] The length of the OCC;

[0084] A value determined based on the length of the OCC;

[0085] The number of multiplexed users of the OCC;

[0086] A value determined based on the number of multiplexed users of the OCC;

[0087] The maximum number of multiplexed users of the OCC;

[0088] A value determined based on the maximum number of multiplexed users of the OCC.

[0089] In some embodiments of the second aspect, the second value is one of:

[0090] The length of the OCC;

[0091] A value determined based on the length of the OCC;

[0092] a number of multiplexed users of the OCC;

[0093] a number determined based on the number of multiplexed users of the OCC;

[0094] a maximum number of multiplexed users of the OCC;

[0095] a number determined based on the maximum number of multiplexed users of the OCC.

[0096] With reference to the second aspect, in some embodiments, the terminal determines the sequence value of the DMRS based on a number of a time slot in which the DMRS is sent; or,

[0097] determines the sequence value of the DMRS based on a number of a subcarrier in which the DMRS is sent.

[0098] With reference to the second aspect, in some embodiments, the terminal determines the sequence value of the DMRS based on an order of the DMRS in a plurality of DMRSs actually sent by the terminal.

[0099] With reference to the second aspect, in some embodiments, the terminal determines the sequence value of the DMRS based on an order of the DMRS in a plurality of DMRSs actually sent by the terminal, including:

[0100] determines the sequence value of the DMRS based on formula (1) or formula (2):

[0101] With reference to the second aspect, in some embodiments, the first number corresponding to different terminals in the same user group is different; or,

[0102] the second number corresponding to different terminals in the same user group is different.

[0103] In a third aspect, the present disclosure provides an uplink communication method, including:

[0104] The terminal determines a time domain position or a frequency domain position of a demodulation reference signal (DMRS) sent by the terminal.

[0105] The terminal determines a sequence value of the DMRS sent at each of the time domain position or the frequency domain position.

[0106] The terminal sends the DMRS to a network device on a physical uplink shared channel (PUSCH) based on OCC multi-user multiplexing.

[0107] In the above embodiments, the terminal is enabled to process the DMRS sequence value at the time-domain position where the DMRS is originally to be sent but is muted due to OCC multiplexing, the orthogonality of DMRS between different users subjected to OCC multi-user multiplexing is ensured, the inter-user interference is reduced and the accuracy of channel estimation is improved, the communication efficiency of the system is effectively improved, and the spectrum and resource utilization rates are improved.

[0108] In a fourth aspect, the embodiments of the present disclosure provide a terminal, the terminal comprising a transceiver module and a processing module; wherein the terminal is configured to perform the first aspect and the optional implementation manners of the first aspect.

[0109] In a fifth aspect, the embodiments of the present disclosure provide a network device, the network device comprising a transceiver module and a processing module; wherein the network device is configured to perform the second aspect and the optional implementation manners of the second aspect.

[0110] In a sixth aspect, the embodiments of the present disclosure provide a communication apparatus, the communication apparatus comprising one or more processors; wherein the communication apparatus is configured to perform the first aspect and the optional implementation manners of the first aspect.

[0111] In a seventh aspect, the embodiments of the present disclosure provide a communication apparatus, the communication apparatus comprising one or more processors; wherein the communication apparatus is configured to perform the second aspect and the optional implementation manners of the second aspect.

[0112] In an eighth aspect, the embodiments of the present disclosure provide a communication system, the communication system comprising a terminal and a network device; wherein the terminal is configured to perform the method described in the first aspect and the optional implementation manners of the first aspect, and the network device is configured to perform the method described in the second aspect and the optional implementation manners of the second aspect.

[0113] In a ninth aspect, the embodiments of the present disclosure provide a storage medium, the storage medium storing instructions, when the instructions are executed on a communication device, causing the communication device to perform the method described in the first aspect and the optional implementation manners of the first aspect, the second aspect and the optional implementation manners of the second aspect.

[0114] In a tenth aspect, the embodiments of the present disclosure provide a program product, when the program product is executed by a communication device, causing the communication device to perform the method described in the first aspect and the optional implementation manners of the first aspect, the second aspect and the optional implementation manners of the second aspect.

[0115] In an eleventh aspect, the embodiments of the present disclosure provide a computer program, when the computer program is executed on a computer, causing the computer to perform the method described in the first aspect and the optional implementation manners of the first aspect, the second aspect and the optional implementation manners of the second aspect.

[0116] In a twelfth aspect, an embodiment of the present disclosure provides a chip or chip system. The chip or chip system includes processing circuitry configured to perform the method described in the first aspect and optional implementation of the first aspect, the second aspect and optional implementation of the second aspect.

[0117] It can be understood that the terminal, access network device, core network device, communication system, storage medium, program product, computer program, chip or chip system described above are used to execute the method proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved thereby can refer to the beneficial effects in the corresponding method, which will not be described here.

[0118] The embodiments of the present disclosure propose an uplink communication method and device. In some embodiments, the uplink communication method and information processing method, communication method, and other terms can be replaced with each other, the uplink communication device and information processing device, communication device, and other terms can be replaced with each other, and the uplink communication system and information processing system, communication system, and other terms can be replaced with each other.

[0119] The embodiments of the present disclosure are not exhaustive, but only illustrate some embodiments, and are not specific limitations on the protection scope of the present disclosure. In the case of no contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily, for example, the scheme after removing some steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, some or all steps of different embodiments can be combined arbitrarily, and an embodiment can be combined with the optional implementation of other embodiments.

[0120] In each embodiment of the present disclosure, the terms and / or descriptions between the embodiments are consistent if there is no special description and logical conflict, and can be referred to each other, and the technical features in different embodiments can be combined to form a new embodiment according to their inherent logical relationship.

[0121] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments, and not as a limitation on the present disclosure.

[0122] In the embodiments of the present disclosure, unless otherwise specified, the elements expressed in singular form, such as "one", "one", "the", "the", "the", "the", "this", etc., can represent "one and only one", or "one or more", "at least one", etc. For example, in the case of using articles such as "a", "an", "the" in English, the noun after the article can be understood as singular expression, or can be understood as plural expression.

[0123] In the embodiments of the present disclosure, "multiple" refers to two or more.

[0124] In some embodiments, the terms "at least one of", "one or more of", "a plurality of", "multiple", and the like can be replaced with each other.

[0125] In some embodiments, the description of "at least one of A, B", "A and / or B", "A in one case and B in another case", "in response to a case A, in response to a case B", and the like can include the following technical solutions according to the case: in some embodiments A (A is executed regardless of B); in some embodiments B (B is executed regardless of A); in some embodiments, A and B are selectively executed (A and B are selectively executed); in some embodiments, A and B (A and B are executed). When there are more branches such as A, B, C, and the like, it is similar to the above.

[0126] In some embodiments, the description of "A or B" and the like can include the following technical solutions according to the case: in some embodiments A (A is executed regardless of B); in some embodiments B (B is executed regardless of A); in some embodiments, A and B are selectively executed (A and B are selectively executed). When there are more branches such as A, B, C, and the like, it is similar to the above.

[0127] The prefix words of "first", "second" and the like in the embodiments of the present disclosure are merely used to distinguish different description objects, and do not constitute limitation on the position, order, priority, quantity or content of the description objects. The description objects are described in the claims or embodiments, and should not be construed as redundant limitation because of the use of the prefix words. For example, the description object is "field", and the ordinal words before "field" in "first field" and "second field" do not limit the position or order between "fields", and "first" and "second" do not limit whether the "fields" modified thereby are in the same message or not, nor limit the order of "first field" and "second field". For another example, the description object is "level", and the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description object is not limited by the ordinal words, and can be one or more. For example, "first device", wherein the quantity of "device" can be one or more. In addition, the objects modified by different prefix words can be the same or different, for example, the description object is "device", and "first device" and "second device" can be the same device or different devices, and the types thereof can be the same or different. For another example, the description object is "information", and "first information" and "second information" can be the same information or different information, and the contents thereof can be the same or different.

[0128] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0129] In some embodiments, the terms of "in response to", "in response to determining", "in the case of", "when", "when", "if", "if" and the like can be replaced with each other.

[0130] In some embodiments, the terms of "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", "above" and the like can be replaced with each other, and the terms of "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", "below" and the like can be replaced with each other.

[0131] In some embodiments, the apparatuses and devices can be interpreted as physical, as well as virtual, whose names are not limited to the names described in the embodiments, and in some cases can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0132] In some embodiments, "network" can be interpreted as an apparatus contained in the network, such as an access network device, a core network device, etc.

[0133] In some embodiments, "access network device (AN device)" can also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments can also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0134] In some embodiments, a "terminal" or "terminal device" can be referred to as a "user equipment" (UE), a "user terminal," a Narrow Band-Internet of Things (NB-IoT) device, a "mobile station" (MS), a "mobile terminal" (MT), a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, and so on.

[0135] In some embodiments, an access network device, a core network device, or a network device can be replaced with a terminal. For example, for a structure in which communication between an access network device, a core network device, or a network device and a terminal is replaced with communication between a plurality of terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), and so on), embodiments of the present disclosure can also be applied. In this case, a structure in which a terminal has all or part of the functions of an access network device can also be provided. Further, terms such as "uplink," "downlink," and so on can also be replaced with terms corresponding to inter-terminal communication (e.g., "side"). For example, an uplink channel, a downlink channel, and so on can be replaced with a side channel, and an uplink, a downlink, and so on can be replaced with a side link.

[0136] In some embodiments, the terminal can be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device can also be configured to have all or part of the functions of the terminal.

[0137] In some embodiments, the data, information, and the like can be acquired in compliance with the laws and regulations of the country where the terminal is located.

[0138] In some embodiments, the data, information, and the like can be acquired after obtaining the consent of the user.

[0139] In addition, each element, each row, or each column in the table of the embodiments of the present disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0140] FIG. 1A is a schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure.

[0141] As shown in FIG. 1A, the communication system 100 includes a terminal 101 and a network device 102.

[0142] In some embodiments, the terminal 101 includes at least one of a mobile phone, a wearable device, an Internet of Things device, a Narrow Band-Internet of Things (NB-IoT) device, a satellite communication device, a car with communication function, a smart car, a 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 smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, a wireless terminal device in smart home, a RedCap terminal, and the like, but is not limited thereto.

[0143] In some embodiments, the network device 102, for example, is a node or device that accesses a terminal to a wireless network, and the network device can include at least one of a satellite or a drone in an uplink communication network, an evolved NodeB (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation NodeB (gNB), a next generation RAN node (NG-RAN node), 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 RAN, a Cloud RAN, a base station in other communication systems, an access node in a Wi-Fi system, but is not limited thereto.

[0144] In some embodiments, the technical solutions of the present disclosure can be applied to an Open RAN architecture, at this time, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be realized through software or programs.

[0145] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), wherein the CU can also be referred to as a control unit (control unit). The CU-DU structure can split the protocol layers of the access network device, and part of the functions of the protocol layers are controlled by the CU, and the remaining part or all of the functions of the protocol layers are distributed in the DU and controlled by the CU, but the present disclosure is not limited thereto.

[0146] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions proposed in the embodiments of the present disclosure. It can be known by those skilled in the art that, with the evolution of system architecture and the appearance of new business scenarios, the technical solutions proposed in the embodiments of the present disclosure are also applicable to similar technical problems.

[0147] The following embodiments of the present disclosure can be applied to the communication system 100 shown in FIG. 1A or part of the subjects, but are not limited thereto. The subjects shown in FIG. 1A are illustrative, and the communication system can include all or part of the subjects in FIG. 1A, or other subjects other than those in FIG. 1A. The number and form of each subject is arbitrary, each subject can be physical or virtual, the connection relationship between each subject is illustrative, each subject can not be connected or can be connected, the connection can be in any way, can be direct connection or indirect connection, can be wired connection or wireless connection.

[0148] Embodiments of the present disclosure can be applied to a Non-terrestrial Network (NTN), Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (Bluetooth (registered trademark)), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Narrow Band-IoT (NB-IoT) system, Vehicle-to-Everything (V2X), system using other communication methods, next-generation system expanded based on them, and the like. Further, a plurality of systems can be combined (for example, combination of LTE or LTE-A and 5G, and the like).

[0149] In some embodiments, in order to improve the coverage of uplink (UL), uplink capacity enhancement is considered to be able to serve more users at the same time. Multi-user multiplexing based on orthogonal cover code (OCC) can be considered to achieve uplink capacity enhancement.

[0150] In the transmission scenario of format 1 single-tone narrow-band physical uplink shared channel (NPUSCH), the frequency domain resource unit (RU) can be as shown in the following table:

[0151] The determination of the time domain resource position of the demodulation reference signal (DMRS): for 3.75 kHz sub-carrier spacing (SCS), the DMRS of NPUSCH format 1 is located on symbol 4; for 15 kHz SCS, the DMRS of NPUSCH format 1 is located on symbol 3 (NPUSCH occupies 7 symbols in a slot).

[0152] For OCC multiplexing in NPUSCH format 1, the design of DMRS needs to ensure that the DMRS between different users remains orthogonal to reduce inter-user interference and improve the accuracy of channel estimation. DMRS orthogonality can be achieved by time division multiplexing (TDM), frequency division multiplexing (FDM) (for multi-tone), etc. For example, a TDM DMRS orthogonalization method is shown in FIG. 1B, UE4 transmits DMRS on slot#1, and for the other three UEs, the position of the DMRS on slot#1 is neither data nor signal, i.e., muted. Further, a problem to be solved is how to handle the DMRS sequence value at the time domain position that is originally to be transmitted but is muted to support NPUSCH OCC multi-user multiplexing to achieve system expansion, so that more users can perform uplink transmission under the premise of limited time-frequency resources and limited terminal transmission power.

[0153] The uplink communication method and apparatus provided by the present disclosure are described in detail below with reference to the accompanying drawings.

[0154] FIG. 2A is an interaction diagram of an uplink communication method according to an embodiment of the present disclosure. As shown in FIG. 2A, the present embodiment relates to an uplink communication method, and the method comprises:

[0155] In step S2101, the terminal 101 determines the time domain position or the frequency domain position of the DMRS.

[0156] In some embodiments, the terminal 101 determines the time domain position or the frequency domain position of the actually transmitted DMRS.

[0157] In some embodiments, the terminal 101 performs the transmission of the DMRS on the physical uplink shared channel (PUSCH) based on orthogonal cover code (OCC) multi-user multiplexing.

[0158] In some embodiments, the DMRS of the terminal 101 and the DMRS corresponding to other terminals in the same OCC multiplexed user group are TDM or FDM.

[0159] Optionally, for OCC multiplexing in NPUSCH format 1, a TDM or FDM DMRS orthogonal manner can be used. Which DMRS orthogonal manner to use can be determined by the protocol in advance, by the configuration / indication of the base station, or by the combination of the protocol and the configuration / indication of the base station. Optionally, the configuration / indication signaling of the base station can be radio resource control (RRC), downlink control information (DCI), etc.

[0160] In some embodiments, the terminal 101 determines the number of the time slot in which the time domain position of the DMRS is located based on the first value. The DMRS is transmitted based on a single subcarrier, and the DMRS of the terminal 101 and the DMRS corresponding to other terminals in the same OCC multiplexed user group are time division multiplexed (TDM).

[0161] The first value is indicated by the network device 102, or the first value is predefined.

[0162] The time-frequency domain resources of the PUSCH corresponding to the terminals in the same user group are the same.

[0163] In some embodiments, the first value is one of the following:

[0164] The length of the OCC;

[0165] a value determined based on the length of the OCC;

[0166] a multiplexed user number of the OCC;

[0167] a value determined based on the multiplexed user number of the OCC;

[0168] a maximum multiplexed user number of the OCC;

[0169] a value determined based on the maximum multiplexed user number of the OCC.

[0170] In some embodiments, the first value corresponding to different terminals in the same user group is different.

[0171] Optionally, the terminal 101 indicates, through the network device 102, and / or a protocol preset rule, the number of the time slot in which the time domain position requiring DMRS transmission is located.

[0172] Optionally, as a possible implementation manner, the following formula can be used to determine the number of the time slot in which the time domain position requiring DMRS transmission is located:

[0173] mod(slot i, L)=x

[0174] Wherein, x is the first value, which is indicated by the network device 102 or determined by a protocol preset rule.

[0175] Wherein, the value of x is related to OCC length (L) or OCC multiplexed user number (L) or OCC maximum multiplexed user number (L), x=0, 1, …, L-1. OCC length (L) or OCC multiplexed user number (L) or OCC maximum multiplexed user number (L) is configured or indicated by the network device 102 or preset by the protocol.

[0176] Wherein, slot i is the relative time slot (slot) number of the terminal 101 in all repetition times.

[0177] As an example, assuming L (L is not excluded from taking other values, for example, L takes value 2) = 4, for a specific UE, x takes value 0, then the above formula is mod (slot i, 4) = 0, so it can be determined that the slot number where the time domain position of the DMRS transmission of the above specific UE is located is 0, 4, 8, …, that is, the time domain position used by the above specific UE to transmit DMRS corresponds to the DMRS time domain position used by UE4 in FIG. 1B. In FIG. 1B, TDM is in units of single slots, and UE1-UE4 are four terminals in the same user group. The DMRS symbol of UE4 is on slot #0 and slot #4; the DMRS symbol of UE3 is on slot #1 and slot #5; the DMRS symbol of UE2 is on slot #2 and slot #6; and the DMRS symbol of UE1 is on slot #3 and slot #7. For UE4, the slot number where the time domain position of the DMRS transmission is located is 0, 4, 8, …; for UE3, the slot number where the time domain position of the DMRS transmission is located is 1, 5, 9, …; for UE2, the slot number where the time domain position of the DMRS transmission is located is 2, 6, 10, …; and for UE1, the slot number where the time domain position of the DMRS transmission is located is 3, 7, 11, ….

[0178] In addition, the slot number where the time domain position of the DMRS transmission of other UEs is located can be determined according to the legacy DMRS pattern or the above formula, and the above specific UE does not perform DMRS transmission at the time domain position of the DMRS transmission of the other UEs.

[0179] In addition, it can be understood that in the above embodiments, in the case of using the TDM DMRS orthogonal manner, for a specific terminal (for example, UE1), the DMRS time domain position where no actual DMRS is transmitted (that is, the blank position in FIG. 1B, which is used for other users to transmit DMRS according to FIG. 1B) and no data is transmitted.

[0180] In some embodiments, the terminal 101 determines the subcarrier number where the time domain position of the DMRS is located based on a second value. The DMRS is transmitted based on multiple subcarriers, and the DMRS of the terminal 101 is frequency division multiplexed FDM with the DMRS corresponding to other terminals in the same OCC multiplexed user group.

[0181] The above second value is indicated by the network device 102, or the above second value is predefined.

[0182] The time-frequency domain resources of the PUSCH corresponding to the terminals in the same user group are the same.

[0183] In some embodiments, the second value is one of:

[0184] a length of the OCC;

[0185] a value determined based on the length of the OCC;

[0186] a number of multiplexed users of the OCC;

[0187] a value determined based on the number of multiplexed users of the OCC;

[0188] a maximum number of multiplexed users of the OCC;

[0189] a value determined based on the maximum number of multiplexed users of the OCC.

[0190] In some embodiments, the second value corresponding to different terminals in the same user group is different.

[0191] Optionally, the terminal 101 indicates, and / or a protocol pre-set rule determines, the number of subcarriers in which the time domain position requiring DMRS transmission is located.

[0192] Optionally, as a possible implementation, the number of subcarriers in which the time domain position requiring DMRS transmission is located can be determined by using the following formula:

[0193] mod(subcarrier k, L) = y

[0194] Wherein, y is the second value, which is indicated by the network device 102 or determined by a protocol pre-set rule.

[0195] Wherein, the value of y is related to OCC length (L) or OCC multiplexed user number (L) or OCC maximum multiplexed user number (L), y = 0, 1, …, L-1. OCC length (L) or OCC multiplexed user number (L) or OCC maximum multiplexed user number (L) is configured or indicated by the network device 102 or pre-set by the protocol.

[0196] Wherein, subcarrier k is the relative subcarrier number of the terminal 101 in all repetition times,

[0197] As an example, assuming L (L is not excluded from taking other values, for example, L takes a value of 2) = 4, for a specific UE, y takes a value of 0, then the above formula is mod (subcarrier k, 4) = 0, so it can be determined that the subcarrier number of the time domain position where the specific UE needs to perform DMRS transmission is 0, 4, 8, ….

[0198] In addition, the subcarrier number of the time domain position where other UEs perform DMRS transmission can be determined according to the legacy DMRS pattern or the above formula, and the specific UE does not perform DMRS transmission at the DMRS transmission time domain position of the other UEs.

[0199] Step S2102, the terminal 101 determines the sequence value of the DMRS transmitted at each of the above time domain positions or frequency domain positions.

[0200] In some embodiments, the terminal 101 determines the sequence value of the DMRS transmitted at each of the above time domain positions or frequency domain positions based on the number of the time slot where the DMRS is transmitted; or determines the sequence value of the DMRS transmitted at each of the above time domain positions or frequency domain positions based on the number of the subcarrier where the DMRS is transmitted.

[0201] It should be noted that when the terminal 101 determines the sequence value of the DMRS transmitted at each of the above time domain positions or frequency domain positions based on the number of the time slot where the DMRS is transmitted, or based on the number of the subcarrier where the DMRS is transmitted, whether the actual position of the DMRS transmission or the position that is originally intended to transmit a signal but is muted, the sequence value of the DMRS will be determined.

[0202] Alternatively, as a possible implementation, the sequence value of the DMRS transmitted at each of the above time domain positions or frequency domain positions can be determined by the following formula, wherein for the position that is originally intended to transmit a signal but is muted, the terminal 101 directly removes the sequence value of the corresponding DMRS (that is, the terminal 101 normally generates the sequence value of the DMRS corresponding to the position, but when transmitting the sequence value of the DMRS to the network device, the sequence value of the DMRS corresponding to the position is removed (only the sequence value of the actually transmitted DMRS is transmitted, and the sequence value of the DMRS of the muted position is not transmitted)):

[0203] Single-tone: Or

[0204] Multi-tone:

[0205] In some embodiments, the terminal 101 determines the sequence value of the DMRS transmitted at each of the above time domain positions or frequency domain positions based on the order of the DMRS actually transmitted by the terminal 101 among the plurality of DMRSs.

[0206] It should be noted that when the terminal 101 determines the sequence value of the DMRS transmitted at each of the above time domain positions or frequency domain positions based on the order of the DMRS actually transmitted by the terminal 101 among the plurality of DMRSs, the terminal 101 only determines the sequence value of the actually transmitted DMRS, and does not determine the sequence value of the DMRS for the position that is originally intended to be transmitted but is muted.

[0207] Alternatively, as a first possible implementation, the sequence value of the DMRS transmitted at each of the above time domain positions or frequency domain positions can be determined by the following formula, wherein for the position that is originally intended to be transmitted but is muted, the terminal 101 does not generate the sequence value of the DMRS corresponding to the position, but postpones the generation of the sequence value of the DMRS to the position of the next actually transmitted DMRS:

[0208] Single-tone:

[0209] wherein a possible way is that i is determined by mod(slot i, L) = x, wherein, x is a first numerical value used to determine the frequency domain position of the actually transmitted DMRS, which is configured / indicated by the network device 102 or preset by the protocol, x = 0, 1, …, L-1;

[0210] Multi-tone:

[0211] wherein a possible way is that k is determined by Mod(subcarrier k, L) = y, wherein, y is a first numerical value used to determine the frequency domain position of the actually transmitted DMRS, which is configured / indicated by the network device 102 or preset by the protocol, y = 0, 1, …, L-1.

[0212] Alternatively, as a second possible implementation, the terminal 101 determines the sequence value of the DMRS transmitted at each of the above time domain positions or frequency domain positions based on formula (1) or formula (2):

[0213] As an example, a possible DMRS generation formula is as follows:

[0214] For 2UE multiplexing, i.e., DMRS TDM2 or DMRS FDM2, the following formula is used:

[0215] Single-tone:

[0216] wherein n = 0, 1, 2, …;

[0217] i' = 0, 1 (i' of one UE cycles 0 and 1) ;

[0218] 2n+i' in the formula is to be able to take the sequence of DMRS in order, for 2n+i', first take n = 0, then i' = 0, i' = 1, then take n = 1, then i' = 0, i' = 1, then take n = 2, then i' = 0, i' = 1, and so on, thus, the value of 2n+i' is 0, 1, 2, 3, ….

[0219] i = 4*n+2i'+delta;

[0220] i is the number of relative time slots of UE in all repetition times.

[0221] In the value formula of i, the coefficient before n is determined according to the maximum value of 2i'(here the coefficient before i' is determined according to the number of terminals in the same OCC multiplexing user group (here it is for 2 UE multiplexing, so the coefficient before i' here is 2))+delta, for example, the maximum value of i' here is 1, and the maximum value of delta is also 1, so the maximum value of 2i'+delta is 3, the coefficient before n is obtained by 3(maximum value of 2i'+delta)+1, so that all UE occupied time slots can be traversed once.

[0222] In the value formula of i, the coefficient before i' is determined according to the number of terminals in the same OCC multiplexing user group, for example, it is for 2 UE multiplexing, that is, the number of terminals in the same OCC multiplexing user group is 2, so the coefficient before i' in the value formula of i is also 2.

[0223] delta = 0, 1;

[0224] delta is determined by the terminal 101 through the network equipment 102 configuration / indication parameter or protocol preset rule, and different UE uniquely determines a delta value, mod(slot i, L) = delta.

[0225] Multi-tone:

[0226] wherein n = 0, 1, 2, …;

[0227] k' = 0, 1 (k' of one UE cycles 0 and 1) ;

[0228] 2n+k' is used to get the sequence of DMRS in order. For 2n+k', n=0 is taken first, then k'=0, k'=1, n=1 is taken next, then k'=0, k'=1, n=2 is taken next, then k'=0, k'=1, and so on. In this way, the values of 2n+k' are ensured to be 0, 1, 2, 3, and so on.

[0229] k = 4*n+2k'+delta;

[0230] k is the number of relative subcarriers of the UE in all repetition times.

[0231] In the value formula of k, the coefficient before n is determined according to the maximum value of 2k'(here, the coefficient before k' is determined according to the number of terminals in the same OCC multiplexing user group (here, it is 2 UE multiplexing, so the coefficient before k' here is 2))+delta, for example, the maximum value of k' here is 1, and the maximum value of delta is also 1, so the maximum value of 2k'+delta is 3, and the coefficient before n is obtained by 3(maximum value of 2k'+delta)+1, which can ensure that all occupied time slots of the UE can be traversed once.

[0232] In the value formula of k, the coefficient before k' is determined according to the number of terminals in the same OCC multiplexing user group, for example, it is 2 UE multiplexing, that is, the number of terminals in the same OCC multiplexing user group is 2, so the coefficient before k' in the value formula of k is also 2.

[0233] delta = 0, 1;

[0234] delta is determined by a parameter or protocol preset rule configured / indicated by the terminal 101 through the network device 102, and a delta value is uniquely determined for different UEs, mod(subcarrier k, L) = delta.

[0235] For 4 UE multiplexing, that is, DMRS TDM4 or DMRS FDM4, the following formula is used:

[0236] Single-tone:

[0237] Wherein, n = 0, 1, 2, …;

[0238] i' = 0, 1 (i' of one UE is cyclically taken as 0 and 1);

[0239] 2n+i' is used to take the sequence of DMRS in order. For 2n+i', n=0 is taken first, then i'=0, i'=1, then n=1, then i'=0, i'=1, then n=2, then i'=0, i'=1, and so on. In this way, the value of 2n+i' is ensured to be 0, 1, 2, 3, and so on.

[0240] i = 8*n+4i'+delta;

[0241] i is the number of the relative slot of the UE in all repetition times.

[0242] In the value formula of i, the coefficient before n is determined according to the maximum value of 4i'(here, the coefficient before i' is determined according to the number of terminals in the same OCC multiplexing user group (here, it is 4 UE multiplexing, so the coefficient before i' here is 4))+delta, for example, the maximum value of i' here is 1, and the maximum value of delta is 3, so the maximum value of 4i'+delta is 7, and the coefficient before n is obtained by 7(maximum value of 4i'+delta)+1, so that all the time slots occupied by the UE can be traversed once.

[0243] In the value formula of i, the coefficient before i' is determined according to the number of terminals in the same OCC multiplexing user group, for example, it is 4 UE multiplexing, that is, the number of terminals in the same OCC multiplexing user group is 4, so the coefficient before i' in the value formula of i is also 4.

[0244] delta = 0, 1, 2, 3;

[0245] delta is determined by a parameter or protocol preset rule configured / indicated by the terminal 101 through the network device 102, and a delta value is uniquely determined for different UEs, mod(slot i, L) = delta.

[0246] Multi-tone:

[0247] Wherein, n = 0, 1, 2, …;

[0248] k' = 0, 1 (k' of one UE is cyclically taken as 0 and 1);

[0249] 2n+k' in the formula is used to take the sequence of DMRS in order. For 2n+k', n=0 is taken first, then k'=0, k'=1, then n=1, then k'=0, k'=1, then n=2, then k'=0, k'=1, and so on. In this way, the value of 2n+k' is ensured to be 0, 1, 2, 3, and so on.

[0250] k = 8*n + 4k' + delta;

[0251] k is the number of relative subcarrier of UE in all repetition times.

[0252] In the value formula of k, the coefficient before n is determined according to the maximum value of 4k'(here, the coefficient before k' is determined according to the number of terminals in the same OCC multiplexing user group (here, it is 4 UE multiplexing, so the coefficient before k' here is 4)) + delta, for example, the maximum value of k' here is 1, and the maximum value of delta is 3, so the maximum value of 4k' + delta is 7, and the coefficient before n is obtained by 7(maximum value of 4k' + delta) + 1, so that the time slots occupied by all UEs can be traversed once.

[0253] In the value formula of k, the coefficient before k' is determined according to the number of terminals in the same OCC multiplexing user group, for example, it is 4 UE multiplexing, that is, the number of terminals in the same OCC multiplexing user group is 4, so the coefficient before k' in the value formula of k is also 4.

[0254] delta = 0, 1, 2, 3;

[0255] delta is determined by a parameter or protocol preset rule configured / indicated by the terminal 101 through the network device 102, and a delta value is uniquely determined for different UEs, mod(subcarrier k, L) = delta.

[0256] In step S2103, the terminal 101 sends the above-mentioned DMRS.

[0257] In some embodiments, the network device 102 receives the above-mentioned DMRS.

[0258] In some embodiments, the above-mentioned DMRS is sent on the OCC multi-user multiplexing based PUSCH.

[0259] In some embodiments, the terminal 101 can further determine the sequence value of the DMRS sent at each time domain position or frequency domain position after determining the time domain position or frequency domain position of the sent DMRS, and then send the DMRS.

[0260] In some embodiments, the terms "eNB", "gNB", "base station", "NG-RAN node" and the like can be replaced with each other.

[0261] In some embodiments, the terms "carrier", "band", "frequency" and the like can be replaced with each other.

[0262] In some embodiments, the names of information and the like are not limited to the names described in the embodiments, and the terms of "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", "chip", and the like can be replaced with each other.

[0263] In some embodiments, the names of information and the like are not limited to the names described in the embodiments, and the terms of "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", "chip", and the like can be replaced with each other.

[0264] In some embodiments, the terms of "physical downlink shared channel (PDSCH)", "DL data", and the like can be replaced with each other, and the terms of "physical uplink shared channel (PUSCH)", "UL data", and the like can be replaced with each other.

[0265] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based", and the like can be replaced with each other.

[0266] In some embodiments, the terms "resource block (RB)", "physical resource block (PRB)", "sub-carrier group (SCG)", "resource element group (REG)", "PRB pair", "RB pair", "resource element (RE)", "sub-carrier", and the like can be replaced with each other.

[0267] In some embodiments, the terms "acquire", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive", and the like can be replaced with each other, and can be interpreted as receiving from other subjects, acquiring from protocols, obtaining from higher layers, processing by oneself, implementing autonomously, and the like.

[0268] In some embodiments, the terms "send", "transmit", "report", "issue", "transmit", "bidirectional transmission", "send and / or receive", and the like can be replaced with each other.

[0269] In some embodiments, the terms "certain", "preset", "pre-set", "set", "indicated", "certain", "arbitrary", "first", and the like can be replaced with each other, and "certain A", "preset A", "pre-set A", "set A", "indicated A", "certain A", "arbitrary A", "first A" can be interpreted as A specified in advance in protocols and the like, A obtained by setting, configuring, or indicating, and the like, A that is certain, A that is arbitrary, or A that is first, and the like, but are not limited thereto.

[0270] In some embodiments, 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, by comparison of numerical values (for example, comparison with a predetermined value), and the like, but is not limited thereto.

[0271] In some embodiments, "not expecting to receive" can be interpreted as not receiving on the time domain resource and / or the frequency domain resource, or can be interpreted as, after receiving the data, etc., not performing subsequent processing on the data, etc.; "not expecting to send" can be interpreted as not sending, or can be interpreted as sending but not expecting the receiving party to respond to the content of the sending.

[0272] The communication method related to the embodiments of the present disclosure can include at least one of steps S2101-S2103. For example, step 2101 can be implemented as an independent embodiment, step 2102 can be implemented as an independent embodiment, step 2103 can be implemented as an independent embodiment, steps 2101+2102 can be implemented as an independent embodiment, steps 2102+2103 can be implemented as an independent embodiment, steps 2101+2103 can be implemented as an independent embodiment, steps 2101+2102+2103 can be implemented as an independent embodiment, and the like, but are not limited thereto.

[0273] In some embodiments, step S2101 is optional, and one or more of the steps can be omitted or replaced in different embodiments.

[0274] In some embodiments, reference can be made to other optional implementations described before or after the description corresponding to FIG. 2A.

[0275] FIG. 3A is a flow diagram of an uplink communication method according to an embodiment of the present disclosure. As shown in FIG. 3A, the embodiments of the present disclosure relate to an uplink communication method, the method is performed by a terminal 101, and the method includes:

[0276] Step S3101, determining a time domain position or a frequency domain position of a DMRS.

[0277] Optional implementations of step S3101 can be referred to optional implementations of step S2101 of FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which will not be described herein.

[0278] Step S3102, determining a sequence value of the DMRS transmitted at each of the time domain positions or the frequency domain positions.

[0279] Optional implementations of step S3102 can be referred to optional implementations of step S2102 of FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which will not be described herein.

[0280] Step S3103, transmitting the DMRS.

[0281] The optional implementation of step S3103 can refer to the optional implementation of step S2103 in FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which will not be repeated here.

[0282] The communication method related to the embodiments of the present disclosure can include at least one of steps S3101-S3103. For example, step 3101 can be implemented as an independent embodiment, step 3102 can be implemented as an independent embodiment, step 3103 can be implemented as an independent embodiment, steps 3101+3102 can be implemented as an independent embodiment, steps 3102+3103 can be implemented as an independent embodiment, steps 3101+3103 can be implemented as an independent embodiment, steps 3101+3102+3103 can be implemented as an independent embodiment, and the like, but are not limited thereto.

[0283] In some embodiments, step S3101 is optional, and one or more of the steps can be omitted or replaced in different embodiments.

[0284] FIG. 4A is a flow diagram of an uplink communication method according to an embodiment of the present disclosure. As shown in FIG. 4A, the embodiments of the present disclosure relate to an uplink communication method, which is performed by the network device 102, and the method includes:

[0285] Step S4101, receiving the DMRS sent by the terminal 101.

[0286] The optional implementation of step S4101 can refer to the optional implementation of step S2103 in FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which will not be repeated here.

[0287] FIG. 5 is a flow diagram of an uplink communication method according to an embodiment of the present disclosure. As shown in FIG. 5, the embodiments of the present disclosure relate to a method for a communication system 100, and the method includes:

[0288] Step S5101, the terminal 101 determines the time domain position or frequency domain position of the demodulation reference signal DMRS.

[0289] Step S5102, the terminal 101 determines the sequence value of the DMRS sent at each of the time domain positions or frequency domain positions.

[0290] Step S5103, the terminal 101 sends the DMRS to the network device 102 on the PUSCH based on OCC multi-user multiplexing.

[0291] The optional implementation of steps S5101-S5103 can refer to the steps in any one or more of the above-mentioned embodiments of FIG. 2A, FIG. 3A, and FIG. 4A, and other associated parts in the embodiments involved in FIG. 2A, FIG. 3A, and FIG. 4A.

[0292] In some embodiments, the above-mentioned method can include the above-mentioned method of the above-mentioned communication system side, terminal side, network device side, and the like, which will not be repeated here.

[0293] In the present embodiment or example, each step can be independent, arbitrarily combined, or the order can be exchanged without contradiction, the optional mode or optional example can be arbitrarily combined, and can be arbitrarily combined with any step of other embodiments or other examples.

[0294] The embodiments of the present disclosure also propose a device for implementing any one of the above methods, for example, a device is proposed, which includes units or modules for implementing each step performed by the terminal in any one of the above methods. For another example, another device is also proposed, which includes units or modules for implementing each step performed by the network device (such as an access network device, a core network function node, a core network device, etc.) in any one of the above methods.

[0295] It should be understood that the division of each unit or module in the above apparatus is only a logical function division, and all or part of them can be integrated into a physical entity or physically separated in actual implementation. In addition, the units or modules in the apparatus can be implemented in the form of processor calling software: for example, the apparatus includes a processor connected with a memory, the memory stores instructions, and the processor calls the instructions stored in the memory to implement any of the above methods or realize the functions of each unit or module of the above apparatus, wherein the processor is, for example, a general processor such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the apparatus or a memory outside the apparatus. Alternatively, the units or modules in the apparatus can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be realized by the design of the hardware circuit. The above hardware circuit can be understood as one or more processors; for example, in one implementation, the above hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the above units or modules are realized by the design of the logical relationship of the elements in the circuit; for example, in another implementation, the above hardware circuit is a programmable logic device (PLD), and a field programmable gate array (FPGA) is taken as an example, which can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, so as to realize the functions of part or all of the above units or modules. All units or modules of the above apparatus can be implemented in the form of processor calling software, or all units or modules can be implemented in the form of hardware circuit, or part of the units or modules are implemented in the form of processor calling software, and the remaining part is implemented in the form of hardware circuit.

[0296] In the embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), a digital signal processor (DSP), or the like. In another implementation, the processor can implement certain functions through a logical relationship of a hardware circuit, and the logical relationship of the hardware circuit is fixed or can be reconfigured. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads a configuration document to implement the configuration of the hardware circuit. It can be understood that the processor loads instructions to implement the functions of the above part or all units or modules. In addition, 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), and the like.

[0297] FIG. 6A is a structural schematic diagram of a network device according to an embodiment of the present disclosure. As shown in FIG. 6A, the terminal 6100 can include at least one of a transceiver module 6101, a processing module 6102, and the like. In some embodiments, the processing module 6102 is configured to determine a time domain position or a frequency domain position of a demodulation reference signal (DMRS) transmitted by the terminal; the processing module 6102 is further configured to determine a sequence value of the DMRS transmitted at each of the time domain position or the frequency domain position; and the transceiver module 6101 is configured to transmit the DMRS to a network device on a physical uplink shared channel (PUSCH) based on orthogonal cover code (OCC) multi-user multiplexing.

[0298] Optionally, the determination of the time domain position of the DMRS transmitted by the terminal includes:

[0299] determining a number of a time slot in which the time domain position of the DMRS is located based on the first value;

[0300] The DMRS is transmitted based on a single subcarrier, and the DMRS of the terminal is time division multiplexed (TDM) with the DMRS corresponding to other terminals in the same OCC multiplexing user group.

[0301] The first value is indicated by the network device, or the first value is predefined.

[0302] The time-frequency domain resources of the PUSCH corresponding to the terminals in the same user group are the same.

[0303] Optionally, the frequency domain position of the DMRS transmitted by the terminal is determined based on the first value.

[0304] The time domain position of the DMRS transmitted by the terminal is determined based on a second value.

[0305] The DMRS is transmitted based on multiple subcarriers, and the DMRS of the terminal is frequency division multiplexed (FDM) with the DMRS corresponding to other terminals in the same OCC multiplexing user group.

[0306] The second value is indicated by the network device, or the second value is predefined.

[0307] The time-frequency domain resources of the PUSCH corresponding to the terminals in the same user group are the same.

[0308] Optionally, the first value is one of the following:

[0309] The length of the OCC;

[0310] A value determined based on the length of the OCC;

[0311] The number of multiplexed users of the OCC;

[0312] A value determined based on the number of multiplexed users of the OCC;

[0313] The maximum number of multiplexed users of the OCC;

[0314] A value determined based on the maximum number of multiplexed users of the OCC.

[0315] Optionally, the second value is one of the following:

[0316] The length of the OCC;

[0317] A value determined based on the length of the OCC;

[0318] The number of multiplexed users of the OCC;

[0319] A value determined based on the number of multiplexed users of the OCC;

[0320] a maximum multiplexed user number of the OCC;

[0321] a value determined based on the maximum multiplexed user number of the OCC.

[0322] Optionally, the determining of the sequence value of the DMRS transmitted at each of the time domain positions or the frequency domain positions comprises:

[0323] determining the sequence value of the DMRS based on a number of a time slot in which the DMRS is transmitted; or

[0324] determining the sequence value of the DMRS based on a number of a subcarrier in which the DMRS is transmitted.

[0325] Optionally, the determining of the sequence value of the DMRS transmitted at each of the time domain positions or the frequency domain positions comprises:

[0326] determining the sequence value of the DMRS based on an order of the DMRS in a plurality of DMRSs actually transmitted by the terminal.

[0327] Optionally, the determining of the sequence value of the DMRS based on the order of the DMRS in the plurality of DMRSs actually transmitted by the terminal comprises:

[0328] determining the sequence value of the DMRS based on formula (1) or formula (2):

[0329] Optionally, the first values corresponding to different terminals in the same user group are different; or

[0330] the second values corresponding to different terminals in the same user group are different.

[0331] Optionally, the transceiver is configured to perform at least one of the communication steps (for example, steps S2101 and S2103, but not limited thereto) of the transmitting and / or receiving performed by the terminal in any of the above methods, which will not be described herein again.

[0332] Optionally, the processing module is configured to perform at least one of the other steps (for example, step S2102, but not limited thereto) of the terminal in any of the above methods, which will not be described herein again.

[0333] FIG. 6B is a structural schematic diagram of another network device according to an embodiment of the present disclosure. As shown in FIG. 6B, the network device 6200 can include at least one of a transceiver module 6201, a processing module 6202, and the like. In some embodiments, the transceiver module 6201 is configured to receive a demodulation reference signal (DMRS) sent by a terminal on a physical uplink shared channel (PUSCH) based on orthogonal cover code (OCC) multi-user multiplexing. In some embodiments, the terminal determines a time domain position or a frequency domain position of the DMRS and determines a sequence value of the DMRS sent at each of the time domain position or the frequency domain position before sending the DMRS.

[0334] Optionally, in combination with some embodiments of the second aspect, in some embodiments, the terminal determines a number of a time slot in which the time domain position of the DMRS is located based on the first value.

[0335] In some embodiments, the DMRS is sent based on a single subcarrier, and the DMRS of the terminal is time division multiplexed (TDM) with the DMRS of another terminal in the same OCC multiplexing user group.

[0336] The first value is indicated by the network device, or the first value is predefined.

[0337] The time-frequency domain resources of the PUSCH corresponding to the terminals in the same user group are the same.

[0338] Optionally, the terminal determines a number of a subcarrier in which the time domain position of the DMRS is located based on a second value.

[0339] In some embodiments, the DMRS is sent based on multiple subcarriers, and the DMRS of the terminal is frequency division multiplexed (FDM) with the DMRS of another terminal in the same OCC multiplexing user group.

[0340] The second value is indicated by the network device, or the second value is predefined.

[0341] The time-frequency domain resources of the PUSCH corresponding to the terminals in the same user group are the same.

[0342] Optionally, the first value is one of the following:

[0343] A length of the OCC;

[0344] A value determined based on the length of the OCC;

[0345] A number of multiplexing users of the OCC;

[0346] A value determined based on the number of multiplexing users of the OCC;

[0347] a maximum multiplexing user number of the OCC;

[0348] a value determined based on the maximum multiplexing user number of the OCC.

[0349] Optionally, the second value is one of:

[0350] a length of the OCC;

[0351] a value determined based on the length of the OCC;

[0352] a multiplexing user number of the OCC;

[0353] a value determined based on the multiplexing user number of the OCC;

[0354] a maximum multiplexing user number of the OCC;

[0355] a value determined based on the maximum multiplexing user number of the OCC.

[0356] Optionally, the terminal determines the sequence value of the DMRS based on a number of a time slot in which the DMRS is sent; or,

[0357] the sequence value of the DMRS is determined based on a number of a subcarrier in which the DMRS is sent.

[0358] Optionally, the terminal determines the sequence value of the DMRS based on an order of the DMRS in a plurality of DMRSs actually sent by the terminal.

[0359] Optionally, the terminal determines the sequence value of the DMRS based on an order of the DMRS in a plurality of DMRSs actually sent by the terminal, comprising:

[0360] the sequence value of the DMRS is determined based on formula (1) or formula (2):

[0361] Optionally, the first value corresponding to different terminals in the same user group is different; or,

[0362] the second value corresponding to different terminals in the same user group is different.

[0363] Optionally, the transceiver module is configured to perform at least one of the communication steps (for example, steps S2101 and S2103, but not limited thereto) of the sending and / or receiving performed by the network device in any of the above methods, which will not be described herein again.

[0364] Optionally, the processing module is configured to perform at least one of the other steps of the network device in any of the above methods, which will not be described herein again.

[0365] In some embodiments, the transceiving module can include a transmitting module and / or a receiving module, which can be separate or integrated together. Alternatively, the transceiving module can be mutually replaced with a transceiver.

[0366] In some embodiments, the processing module can be one module or include multiple sub-modules. Alternatively, the multiple sub-modules perform all or part of the steps required to be performed by the processing module respectively. Alternatively, the processing module can be mutually replaced with a processor.

[0367] FIG. 7A is a structural schematic diagram of a communication device 7100 according to the embodiments of the present disclosure. The communication device 7100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor supporting the network device to implement any of the above methods, or a chip, a chip system, or a processor supporting the terminal to implement any of the above methods. The communication device 7100 can be used to implement the methods described in the above method embodiments, which can be referred to the descriptions in the above method embodiments.

[0368] As shown in FIG. 7A, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general purpose processor or a special purpose processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process data of the programs. The communication device 7100 is used to implement any of the above methods.

[0369] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Alternatively, all or part of the memory 7102 can also be outside the communication device 7100.

[0370] In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the transceiver 7103 performs at least one of the communication steps such as transmitting and / or receiving in the above methods, and the processor 7101 performs at least one of the other steps.

[0371] In some embodiments, the transceiver can include a receiver and / or a transmitter, which can be separate or integrated together. Optionally, the terms transceiver, transceiving unit, transceiver, transceiving circuit, etc. can be replaced by each other, the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced by each other, and the terms receiver, receiving unit, receiver, receiving circuit, etc. can be replaced by each other.

[0372] In some embodiments, the communication device 7100 can include one or more interface circuits 7104. Optionally, the interface circuit 7104 is connected with the memory 7102, and the interface circuit 7104 can be used to receive signals from the memory 7102 or other devices, and can be used to send signals to the memory 7102 or other devices. For example, the interface circuit 7104 can read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0373] The communication device 7100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 can not be limited by FIG. 7A. The communication device can be a standalone device or can be part of a larger device. For example, the above communication device can be: (1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally also include storage components for storing data, programs; (3) an ASIC, such as a Modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) other devices, etc.

[0374] FIG. 7B is a structural schematic diagram of a chip 7200 according to an embodiment of the present disclosure. For the case where the communication device 7100 is a chip or a chip system, the structural schematic diagram of the chip 7200 shown in FIG. 7B can be referred to, but is not limited thereto.

[0375] The chip 7200 includes one or more processors 7201, and the chip 7200 is configured to execute any of the above methods.

[0376] In some embodiments, the chip 7200 further includes one or more interface circuits 7202. Optionally, the interface circuit 7202 is connected with the memory 7203, and the interface circuit 7202 can be used to receive signals from the memory 7203 or other devices, and can be used to send signals to the memory 7203 or other devices. For example, the interface circuit 7202 can read instructions stored in the memory 7203 and send the instructions to the processor 7201.

[0377] In some embodiments, the interface circuit 7202 performs at least one of the communication steps of sending and / or receiving in the above-described methods, and the processor 7201 performs at least one of the other steps.

[0378] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc. can be replaced by each other.

[0379] In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Optionally, all or part of the memories 7203 can be outside the chip 7200.

[0380] The disclosure further proposes a storage medium having instructions stored thereon, which, when executed on the communication device 7100, causes the communication device 7100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Optionally, the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a transitory storage medium.

[0381] The disclosure further proposes a program product, which, when executed by the communication device 7100, causes the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0382] The disclosure further proposes a computer program, which, when executed on a computer, causes the computer to perform any of the above methods.

[0383] In the above embodiments, all or part can be implemented by software, hardware, firmware, or any combination thereof. When implemented by software, all or part can be implemented in the form of a computer program product. The above computer program product includes one or more computer programs. When the above computer programs are loaded and executed on a computer, all or part of the above processes or functions are generated according to the embodiments of the present disclosure. The above computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The above computer programs can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another, for example, the above computer programs can be transferred from one website, computer, server or data center to another through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The above computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The above available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (such as a solid state disk (solid state disk, SSD)), etc.

[0384] Those of ordinary skill in the art can be aware that, in combination with the embodiments disclosed in the specification, units and algorithm steps of each example described in the embodiments can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present disclosure.

[0385] Those of ordinary skill in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0386] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the above claims.

Claims

1. An uplink communication method, characterized by, The method is performed by a terminal, and the method comprises: determining time domain positions or frequency domain positions at which the terminal transmits demodulation reference signals (DMRSs); determining sequence values of the DMRSs transmitted at each of the time domain positions or the frequency domain positions; transmitting, to a network device, the DMRSs on a physical uplink shared channel (PUSCH) that is subjected to multi-user multiplexing based on an orthogonal cover code (OCC).

2. The method of claim 1, wherein, The determination of the time domain positions at which the terminal transmits the DMRSs comprises: determining, based on a first value, a number of a time slot in which the time domain positions at which the terminal transmits the DMRSs are located. The DMRSs are transmitted based on a single subcarrier, and the DMRS of the terminal is time division multiplexed (TDM) with DMRSs of other terminals in a same OCC multiplexing user group. The first value is indicated by the network device, or the first value is predefined. The time-frequency domain resources of PUSCHs corresponding to terminals in the same user group are the same.

3. The method of claim 1, wherein, The determination of the frequency domain positions at which the terminal transmits the DMRSs comprises: determining, based on a second value, a number of a subcarrier in which the frequency domain positions at which the terminal transmits the DMRSs are located. The DMRSs are transmitted based on multiple subcarriers, and the DMRS of the terminal is frequency division multiplexed (FDM) with DMRSs of other terminals in a same OCC multiplexing user group. The second value is indicated by the network device, or the second value is predefined. The time-frequency domain resources of PUSCHs corresponding to terminals in the same user group are the same.

4. The method of claim 2, wherein, The first value is at least one of: a length of the OCC; a value determined based on the length of the OCC; a number of multiplexing users of the OCC; a value determined based on the number of multiplexing users of the OCC; a maximum number of multiplexing users of the OCC; and a value determined based on the maximum number of multiplexing users of the OCC.

5. The method of claim 3, wherein, The second value is at least one of: a length of the OCC; a value determined based on the length of the OCC; a number of multiplexing users of the OCC; a value determined based on the number of multiplexing users of the OCC; a maximum number of multiplexing users of the OCC; and a value determined based on the maximum number of multiplexing users of the OCC.

6. The method according to claim 2 or 3, characterized in that, The determination of the sequence values of the DMRSs transmitted at each of the time domain positions or the frequency domain positions comprises: determining the sequence value of the DMRS based on the number of the time slot in which the DMRS is located; or determining the sequence value of the DMRS based on the number of the subcarrier in which the DMRS is located.

7. The method of claim 2 or 3, wherein, The determination of the sequence values of the DMRSs transmitted at each of the time domain positions or the frequency domain positions comprises: determining the sequence value of the DMRS based on an order of the DMRS in multiple DMRSs actually transmitted by the terminal.

8. The method of claim 7, wherein, The determination of the sequence value of the DMRS based on the order of the DMRS in multiple DMRSs actually transmitted by the terminal comprises: determining a sequence value of the DMRS based on the formula (1) or the formula (2):

9. The method according to any one of claims 2-8, characterized in that, the first value corresponding to different terminals in the same user group is different; or the second value corresponding to different terminals in the same user group is different.

10. An uplink communication method characterized by comprising: The method is performed by a network device, and the method comprises: A demodulation reference signal (DMRS) sent by a receiving terminal on a physical uplink shared channel (PUSCH) based on orthogonal cover code (OCC) multi-user multiplexing; The terminal determines a time domain position or a frequency domain position of the DMRS before sending the DMRS, and determines a sequence value of the DMRS sent at each of the time domain positions or the frequency domain positions.

11. The method of claim 10, wherein, The terminal determines a number of a time slot in which the time domain position of the DMRS is located based on a first value. The DMRS is sent based on a single subcarrier, and the DMRS of the terminal is time division multiplexed (TDM) with the DMRS corresponding to another terminal in a same OCC multi-user group. The first value is indicated by the network device, or the first value is predefined. The time-frequency domain resources of the PUSCH corresponding to the terminals in the same user group are the same. The terminal determines a number of a subcarrier in which the time domain position of the DMRS is located based on a second value.

12. The method of claim 10, wherein, The DMRS is sent based on multiple subcarriers, and the DMRS of the terminal is frequency division multiplexed (FDM) with the DMRS corresponding to another terminal in a same OCC multi-user group. The second value is indicated by the network device, or the second value is predefined. The time-frequency domain resources of the PUSCH corresponding to the terminals in the same user group are the same. The first value is one of:

13. The method of claim 11, wherein, A length of the OCC; A value determined based on the length of the OCC; A number of multi-users of the OCC; A value determined based on the number of multi-users of the OCC; A maximum number of multi-users of the OCC; A value determined based on the maximum number of multi-users of the OCC. The second value is one of:

14. The method of claim 12, wherein, A length of the OCC; A value determined based on the length of the OCC; A number of multi-users of the OCC; A value determined based on the number of multi-users of the OCC; A maximum number of multi-users of the OCC; A value determined based on the maximum number of multi-users of the OCC. The terminal determines the sequence value of the DMRS based on a number of a time slot in which the DMRS is sent; or 15. The method of claim 11 or 12, wherein, The terminal determines the sequence value of the DMRS based on a number of a subcarrier in which the DMRS is sent. The terminal determines the sequence value of the DMRS based on an order of the DMRS in multiple DMRSs actually sent by the terminal.

16. The method of claim 11 or 12, wherein, The terminal determines the sequence value of the DMRS based on an order of the DMRS in multiple DMRSs actually sent by the terminal, including:

17. The method of claim 16, wherein, The first values corresponding to different terminals in the same user group are different; or determining a sequence value of the DMRS based on the formula (1) or the formula (2):

18. The method according to any one of claims 10-17, characterized in that, The second values corresponding to different terminals in the same user group are different. The terminal includes:

19. A terminal, characterized by A processing module configured to determine a time domain position or a frequency domain position of a demodulation reference signal (DMRS) sent by the terminal; The processing module is further configured to determine a sequence value of the DMRS sent at each of the time domain positions or the frequency domain positions; A transceiver module configured to send the DMRS to a network device on a physical uplink shared channel (PUSCH) based on orthogonal cover code (OCC) multi-user multiplexing. ​ 20. A network device, comprising: The network device comprises: a transceiver module, configured to receive a demodulation reference signal (DMRS) sent by a terminal on a physical uplink shared channel (PUSCH) based on orthogonal cover code (OCC) multi-user multiplexing; wherein, before sending the DMRS, the terminal determines a time domain position or a frequency domain position of the DMRS, and determines a sequence value of the DMRS sent at each of the time domain positions or the frequency domain positions.

21. A communications device, characterized by The terminal comprises: one or more processors; wherein, the terminal is configured to perform the uplink communication method in any one of claims 1-9.

22. A communications device, characterized by The network device comprises: one or more processors; wherein, the network device is configured to perform the uplink communication method in any one of claims 10-18.

23. A communication system, characterized by The terminal and the network device are comprised, wherein the terminal is configured to implement the model training method in any one of claims 1-9, and the network device is configured to implement the uplink communication method in any one of claims 10-18.

24. A storage medium, the storage medium storing instructions, wherein, When the instructions run on the communication device, the communication device is caused to perform the uplink communication method in any one of claims 1-9 or 10-18.

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