Communication system and method, and related device

Abstract

The present application relates to the technical field of communications. Provided are a communication method and system, and a related device. The method comprises: sending indication information to a terminal device, wherein the indication information indicates whether there is co-scheduled user equipment, such that the terminal device receives a physical downlink shared channel (PDSCH) on the basis of a reception algorithm corresponding to the indication information. Thus, when there is a co-scheduled user equipment, a terminal device can receive and process a PDSCH in a more effective manner on the basis of a corresponding reception algorithm, such that the waste of resources is reduced, thereby improving the resource utilization rate of the whole communication system. Moreover, the noise interference during communications is reduced by means of an appropriate reception algorithm, such that the signal quality can also be improved, and the reliability of communications can be improved.

Description

A communication system, method and related equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on March 8, 2024, with application number 202410265326.0 and invention name “A communication system, method and related equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a communication system, method and related equipment. Background Art

[0003] In communication systems, interference refers to unstable electromagnetic waves that hinder radio signal reception. This interference can come from other radio equipment, lightning, industrial noise, and other sources. Interference can negatively impact the performance of communication systems, such as reducing signal quality, increasing bit error rates, and impacting user experience. To reduce interference during communication, the Physical Downlink Shared Channel (PDSCH) protocol defaults to allowing user equipment (UE) to utilize advanced signal processing techniques or algorithms. This improves interference suppression capabilities by implementing signal equalization, thereby enhancing signal transmission performance.

[0004] In related technologies, the UE can use the Extended Linear Minimum Mean Square Error-Interference Rejection Combining (E-LMMSE-IRC) algorithm to construct an equalization matrix based on factors such as channel estimation, co-scheduled UE channel estimation, and interference and noise estimation. This equalization matrix can reflect the channel state, multi-user interference, and noise conditions during signal transmission. Furthermore, based on the equalization matrix, the E-LMMSE-IRC algorithm can achieve signal equalization, thereby reducing multipath interference and spectrum leakage during communication, thereby improving signal transmission performance.

[0005] However, the E-LMMSE-IRC algorithm is highly complex, resulting in a corresponding increase in UE processing power consumption. Furthermore, the E-LMMSE-IRC algorithm is only applicable to multi-user (MU-MIMO) scenarios. If the UE is in a single-user (SU-MIMO) scenario, the increased processing power consumption of the UE will result in a decrease in PDSCH communication performance. Summary of the Invention

[0006] The purpose of this application is to provide a communication system, method and related equipment that can improve the communication performance of PDSCH.

[0007] In a first aspect, the present application provides a communication method, applied to a network device, comprising: sending indication information to a terminal device, the indication information indicating whether there is a co-scheduled user device, so that the terminal device receives a physical downlink shared channel (PDSCH) according to a reception algorithm corresponding to the indication information. Thus, when there is a co-scheduled user device, the terminal device can more efficiently receive and process the PDSCH according to the corresponding reception algorithm, which helps to reduce resource waste and improve resource utilization of the entire communication system. In addition, by reducing noise interference during communication through a suitable reception algorithm, signal quality can be improved and communication reliability can be improved.

[0008] In some specific implementations, indication information is sent to a terminal device, where the indication information indicates whether there is a co-scheduled user device, so that the terminal device receives a physical downlink shared channel PDSCH according to a receiving algorithm corresponding to the indication information, including: sending first indication information to the terminal device, where the first indication information indicates the existence of a co-scheduled user device, so that the terminal device receives PDSCH according to an extended linear minimum mean square error-interference rejection combination E-LMMSE-IRC algorithm; or sending second indication information to the terminal device, where the second indication information indicates the absence of a co-scheduled user device, so that the terminal device receives PDSCH according to a linear minimum mean square error LMMSE algorithm or a minimum mean square error-interference rejection combination LMMSE-IRC algorithm.

[0009] In some specific implementations, it is detected whether a terminal device communicating with a network device has a co-scheduled user device; if so, a first indication message is sent to the terminal device so that the terminal device receives the physical downlink shared channel PDSCH according to the extended linear minimum mean square error-interference rejection combination E-LMMSE-IRC algorithm; if not, a second indication message is sent to the terminal device so that the terminal device receives the PDSCH according to the linear minimum mean square error LMMSE algorithm or the minimum mean square error-interference rejection combination LMMSE-IRC algorithm. Thus, when there is a co-scheduled user device, the PDSCH is received according to the E-LMMSE-IRC algorithm, and when there is no co-scheduled user device, the PDSCH is received according to the LMMSE or LMMSE-IRC algorithm, which helps to reduce resource waste and improve resource utilization of the communication system. In addition, by reducing noise interference during communication through a suitable receiving algorithm, the signal quality can be improved and the reliability of communication can be improved.

[0010] In some specific implementations, sending the second indication information to the terminal device includes: sending a broadcast message and / or a radio resource control (RRC) configuration to the terminal device, wherein the broadcast message and / or the RRC configuration includes the second indication information. Thus, sending the indication information via the broadcast message or RRC configuration is more explicit, and the terminal device can clearly receive the indication information indicating whether there is a co-scheduled user device, which helps the terminal device avoid confusion or uncertainty. Furthermore, the network device can quickly and dynamically adjust the indication information to adapt to different situations and needs, thereby increasing the flexibility and efficiency of sending the indication information.

[0011] In some specific implementations, sending a broadcast message and / or RRC configuration to a terminal device includes: if the number of antennas in the cell corresponding to the network device is lower than a first quantity threshold, or the load of the cell corresponding to the network device is lower than a second quantity threshold, sending a broadcast message and / or RRC configuration to the terminal device. As a result, the clarity of sending the indication information through the broadcast message or RRC configuration is relatively strong, and the terminal device can clearly receive the indication information indicating whether there is a co-scheduled user device, which helps the terminal device avoid confusion or uncertainty. In addition, the network device can quickly and dynamically adjust the indication information to adapt to different situations and needs, so that the flexibility and efficiency of sending the indication information are also relatively high.

[0012] In some specific implementations, sending the first indication information to the terminal device includes: sending a downlink control information DCI indication to the terminal device, where the DCI indication includes the first indication information.

[0013] In some specific implementations, sending a downlink control information (DCI) indication to a terminal device, wherein the DCI indication includes the first indication information, includes: sending a DCI indication to the terminal device, wherein the DCI indication includes a field for a target bit, wherein the field for the target bit includes the first indication information. Thus, more information and control capabilities can be provided without increasing DCI overhead, thereby better meeting the needs of the communication system. Furthermore, as technology advances and needs increase, this 1-bit field can be easily expanded or modified to adapt to new needs.

[0014] In some specific implementations, sending a downlink control information (DCI) indication to a terminal device, wherein the DCI indication includes the first indication information, includes: sending a DCI indication to the terminal device, wherein the DCI indication includes a newly added entry for an antenna port, wherein the newly added entry for the antenna port represents the first indication information. Thus, the network device can use the entry in the antenna port field in the DCI as indication information to indicate the terminal device, thereby helping the terminal device understand the current scheduling policy and resource allocation.

[0015] In some specific implementations, sending first indication information to a terminal device, or sending second indication information to a terminal device, includes: when the network device is configured with two transport blocks TB, sending a DCI indication to the terminal device, wherein the DCI indication includes an antenna port field, and one or more of a modulation and coding scheme MCS, a new data indicator NDI, and a redundancy version RV, the antenna port field, and one or more of MCS, NDI, and RV jointly characterize the first indication information or the second indication information. Indicating the indication information by this method has the following advantages: First, reusing the antenna port field field in the DCI and one or more of MCS, NDI, and RV for indication can reduce additional signaling overhead. This is because this information has been transmitted in the DCI, and the reused field can avoid additional signal transmission and parsing processes, thereby improving communication efficiency. Secondly, this joint indication method can maintain the maximum degree of freedom of DMRS ports indication. Since the correspondence between DMRS ports and antennas is very important for demodulation, maintaining the maximum degree of freedom can better support multi-antenna configurations and multiplexing schemes, thereby improving the flexibility of the communication system.

[0016] In some specific implementations, when the network device is configured with two transport blocks TB, a DCI indication is sent to the terminal device, including: when the network device satisfies one of the following conditions: the demodulation reference signal DMRS is of the first DMRS configuration type and the maximum number of DMRS symbols is 2, or the second DMRS configuration type and the maximum number of DMRS symbols is 1, or the second DMRS configuration type and the maximum number of DMRS symbols is 2, a DCI indication is sent to the terminal device.

[0017] In some specific implementations, the DCI indication includes an antenna port field, and one or more of a modulation and coding scheme MCS, a new data indicator NDI, and a redundancy version RV. The antenna port field, and one or more of MCS, NDI, and RV jointly represent the first indication information or the second indication information, including: if the DCI indication represents that the MCS of the two TBs is not equal to the first target value or the RV of the two TBs is not equal to the second target value, and the DCI indication includes a newly added entry of the antenna port field, the DCI indication represents the first indication information.

[0018] In some specific implementations, the DCI indication includes an antenna port field, and one or more of a modulation and coding scheme MCS, a new data indicator NDI, and a redundancy version RV. The antenna port field, and one or more of MCS, NDI, and RV jointly represent the first indication information or the second indication information, including: if the DCI indication represents that the MCS of the two TBs is not equal to the first target value or the RV of the two TBs is not equal to the second target value, and the DCI indication includes an entry other than the newly added entry in the antenna port field, the DCI indication represents the second indication information.

[0019] In some specific implementations, the DCI indication includes an antenna port field, and one or more of a modulation and coding scheme MCS, a new data indicator NDI, and a redundancy version RV. The antenna port field, and one or more of MCS, NDI, and RV jointly represent the first indication information or the second indication information, including: if the DCI indication represents that the MCS of a TB is equal to a first target value and the RV of a TB is equal to a second target value, the DCI indication represents the second indication information.

[0020] In some specific implementations, the newly added entry is activated by a media access control-control element MAC-CE.

[0021] In a second aspect, the present application discloses a communication method, applied to a terminal device, comprising: receiving indication information sent by a network device, the indication information indicating whether a co-scheduled user device exists; and receiving a PDSCH according to a reception algorithm corresponding to the indication information. Thus, when a co-scheduled user device exists, the terminal device can more efficiently receive and process the PDSCH according to the corresponding reception algorithm, which helps reduce resource waste and improve resource utilization of the entire communication system. Furthermore, by reducing noise interference during communication through a suitable reception algorithm, signal quality can be improved, thereby enhancing communication reliability.

[0022] In some specific implementations, if first indication information sent by a network device is received, PDSCH is received according to the E-LMMSE-IRC algorithm, and the first indication information indicates the presence of a co-scheduled user device; if second indication information sent by the network device is received, PDSCH is received according to the LMMSE algorithm or the LMMSE-IRC algorithm, and the second indication information indicates the absence of a co-scheduled user device. Thus, when there is a co-scheduled user device, PDSCH is received according to the E-LMMSE-IRC algorithm, and when there is no co-scheduled user device, PDSCH is received according to the LMMSE or LMMSE-IRC algorithm, which helps to reduce resource waste and improve resource utilization of the communication system. In addition, by reducing noise interference during communication through a suitable receiving algorithm, signal quality can be improved and communication reliability can be improved.

[0023] In some specific implementations, receiving the second indication information sent by the network device includes: receiving a broadcast message and / or RRC configuration sent by the network device, wherein the broadcast message and / or RRC configuration includes the second indication information. Thus, the indication information sent via the broadcast message or RRC configuration is more clear, and the terminal device can clearly receive the indication information indicating whether there is a co-scheduled user equipment, which helps the terminal device avoid confusion or uncertainty. Furthermore, the network device can quickly and dynamically adjust the indication information to adapt to different situations and needs, thereby increasing the flexibility and efficiency of sending the indication information.

[0024] In some specific implementations, receiving the first indication information sent by the network device includes: receiving a DCI indication sent by the network device, where the DCI indication includes the first indication information.

[0025] In some specific implementations, receiving a DCI indication sent by a network device, wherein the DCI indication includes the first indication information, includes: receiving a DCI indication sent by a network device, wherein the DCI indication includes a field for a target bit, wherein the field for the target bit includes the first indication information. This allows for providing more information and control capabilities without increasing DCI overhead, thereby better meeting the needs of the communication system. Furthermore, as technology advances and needs increase, this one-bit field can be easily expanded or modified to accommodate new requirements.

[0026] In some specific implementations, receiving a DCI indication sent by a network device, where the DCI indication includes first indication information, includes: receiving a DCI indication sent by the network device, where the DCI indication includes a newly added entry for an antenna port, where the newly added entry for the antenna port represents the first indication information. Thus, the network device can use the entry in the antenna port field in the DCI as indication information to indicate to the terminal device, thereby helping the terminal device understand the current scheduling policy and resource allocation.

[0027] In some specific implementations, receiving first indication information sent by a network device, or receiving second indication information sent by a network device, includes: when the network device is configured with two TBs, receiving a DCI indication sent by the network device, the DCI indication including an antenna port field, and one or more of MCS, NDI, and RV, the antenna port field, and one or more of MCS, NDI, and RV jointly represent the first indication information or the second indication information. Indicating indication information by this method has the following advantages: First, reusing the antenna port field field in the DCI and one or more of MCS, NDI, and RV for indication can reduce additional signaling overhead. This is because this information has been transmitted in the DCI, and the reused field can avoid additional signal transmission and parsing processes, thereby improving communication efficiency. Secondly, this joint indication method can maintain the maximum degree of freedom of DMRS ports indication. Since the correspondence between DMRS ports and antennas is very important for demodulation, maintaining the maximum degree of freedom can better support multi-antenna configurations and multiplexing schemes, thereby improving the flexibility of the communication system.

[0028] In some specific implementations, when the network device is configured with two TBs, a DCI indication sent by the network device is received, including: when the network device satisfies one of the following conditions: DMRS is a first DMRS configuration type and the maximum number of DMRS symbols is 2, or, a second DMRS configuration type and the maximum number of DMRS symbols is 1, or, a second DMRS configuration type and the maximum number of DMRS symbols is 2, the DCI indication sent by the network device is received.

[0029] In some specific implementations, the DCI indication includes an antenna port field, and one or more of a modulation and coding scheme MCS, a new data indicator NDI, and a redundancy version RV. The antenna port field, and one or more of MCS, NDI, and RV jointly represent the first indication information or the second indication information, including: if the DCI indication represents that the MCS of the two TBs is not equal to the first target value or the RV of the two TBs is not equal to the second target value, and the DCI indication includes a newly added entry of the antenna port field, the DCI indication represents the first indication information.

[0030] In some specific implementations, the DCI indication includes an antenna port field, and one or more of a modulation and coding scheme MCS, a new data indicator NDI, and a redundancy version RV. The antenna port field, and one or more of MCS, NDI, and RV jointly represent the first indication information or the second indication information, including: if the DCI indication represents that the MCS of the two TBs is not equal to the first target value or the RV of the two TBs is not equal to the second target value, and the DCI indication includes an entry other than the newly added entry in the antenna port field, the DCI indication represents the second indication information.

[0031] In some specific implementations, the DCI indication includes an antenna port field, and one or more of a modulation and coding scheme MCS, a new data indicator NDI, and a redundancy version RV. The antenna port field, and one or more of MCS, NDI, and RV jointly represent the first indication information or the second indication information, including: if the DCI indication represents that the MCS of a TB is equal to a first target value and the RV of a TB is equal to a second target value, the DCI indication represents the second indication information.

[0032] In some specific implementations, the newly added entry is activated by the MAC-CE.

[0033] In a third aspect, the present application provides a network device, comprising: a memory for storing computer programs or computer instructions; and a processor for executing the computer programs or computer instructions stored in the memory, so that the network device performs the method of the first aspect.

[0034] In a fourth aspect, the present application provides a terminal device, which includes: a memory for storing computer programs or computer instructions; and a processor for executing the computer programs or computer instructions stored in the memory, so that the terminal device executes the method of the second aspect.

[0035] In a fifth aspect, the present application provides a communication system, which includes a network device and a terminal device, the network device is used to execute the method as in the first aspect, and the terminal device is used to execute the method as in the second aspect.

[0036] In a sixth aspect, the present application provides a computer storage medium for storing a computer program, which, when executed, is used to implement the methods of the first and second aspects.

[0037] In a seventh aspect, the present application provides a communication device, which is applied to a network device, and the communication device includes: a sending module; the sending module is used to send indication information to a terminal device, where the indication information indicates whether there is a co-scheduled user device, so that the terminal device receives the physical downlink shared channel PDSCH according to the receiving algorithm corresponding to the indication information. Thus, when there is a co-scheduled user device, the terminal device can receive and process the PDSCH more efficiently according to the corresponding receiving algorithm, which helps to reduce resource waste and improve resource utilization of the entire communication system. In addition, by reducing noise interference during communication through a suitable receiving algorithm, it is also possible to improve signal quality and improve communication reliability.

[0038] In an eighth aspect, the present application provides a communication device, which is applied to a terminal device and includes: a first receiving module and a second receiving module; the first receiving module is used to receive indication information sent by a network device, the indication information indicating whether there is a co-scheduled user device; the second receiving module is used to receive PDSCH according to a receiving algorithm corresponding to the indication information. Thus, when there is a co-scheduled user device, the terminal device can receive and process PDSCH more efficiently according to the corresponding receiving algorithm, which helps to reduce resource waste and improve resource utilization of the entire communication system. In addition, by reducing noise interference during communication through a suitable receiving algorithm, it is also possible to improve signal quality and enhance communication reliability.

[0039] Based on the above technical solution, this application has the following beneficial effects:

[0040] The present application provides a communication system, method, and related equipment. The method includes: sending indication information to a terminal device, the indication information indicating whether a co-scheduled user device exists, so that the terminal device receives a physical downlink shared channel (PDSCH) according to a reception algorithm corresponding to the indication information. Thus, when a co-scheduled user device exists, the terminal device can more efficiently receive and process the PDSCH according to the corresponding reception algorithm, which helps reduce resource waste and improve resource utilization of the entire communication system. Furthermore, by reducing noise interference during communication through an appropriate reception algorithm, signal quality can be improved, thereby enhancing communication reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] FIG1 is an example diagram of a scenario of communication between a base station and a terminal provided in an embodiment of the present application;

[0042] FIG2 is a signaling diagram of a communication method provided in an embodiment of the present application;

[0043] FIG3 is a schematic diagram of an antenna port field provided in an embodiment of the present application;

[0044] FIG4A is a schematic diagram of another antenna port field provided in an embodiment of the present application;

[0045] FIG4B is a schematic diagram of a third antenna port field provided in an embodiment of the present application;

[0046] FIG5A is a schematic diagram of a DMRS configuration type 1 provided in an embodiment of the present application;

[0047] FIG5B is a schematic diagram of a DMRS configuration type 2 provided in an embodiment of the present application;

[0048] FIG6 is a schematic diagram of a fourth antenna port field provided in an embodiment of the present application;

[0049] FIG7A is a schematic diagram of a fifth antenna port field provided in an embodiment of the present application;

[0050] FIG7B is a schematic diagram of a sixth antenna port field provided in an embodiment of the present application;

[0051] FIG7C is a schematic diagram of a seventh antenna port field provided in an embodiment of the present application;

[0052] FIG7D is a subsequent schematic diagram of FIG7C ;

[0053] FIG8 is a schematic diagram of a communication method provided in an embodiment of the present application;

[0054] FIG9 is a schematic diagram of another communication method provided in an embodiment of the present application;

[0055] FIG10 is a schematic diagram of the hardware composition of an electronic device provided in an embodiment of the present application;

[0056] FIG11 is a schematic diagram of the hardware composition of another electronic device provided in an embodiment of the present application;

[0057] FIG12 is a schematic diagram of a communication device provided in an embodiment of the present application;

[0058] FIG13 is a schematic diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0059] The terms "first", "second" and "third" in the specification, claims and drawings of this application are used to distinguish different objects rather than to limit a specific order.

[0060] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0061] The embodiments of the present application are applied to a communication system. The communication system may be a second-generation (2G) communication system, a third-generation (3G) communication system, an LTE system, a fifth-generation (5G) communication system, a Long Term Evolution (LTE) and 5G hybrid architecture, a 5G New Radio (5G NR) system, or any new communication system that may emerge in future communication developments.

[0062] The communication system includes a first device and a second device. The first device can be a device on the network side for providing network communication functions, which is sometimes also called a network device or a network element. The network device can generally be a base station (including a functional unit of a base station, or a combination of functional units of a base station) or a core network unit, wherein the core network unit can be a functional unit in the core network, including but not limited to an access and mobility management function (AMF) unit or a session management function (SMF) unit. The second device can be a device for accessing the network, which can generally be a terminal device. See Figure 1, which is an example diagram of a scenario of communication between a base station and a terminal provided in an embodiment of the present application. Figure 1 includes base station 1 and terminal 2.

[0063] In the embodiments provided in the present application, the base station can be any device with wireless transceiver functions, including but not limited to: an evolved base station (NodeB or eNB or e-NodeB, evolutionary Node B) in long term evolution (LTE), a base station (gNodeB or gNB) or a transmission receiving point (TRP) in new radio (NR), a base station of subsequent evolution of 3GPP, an access node in a Wi-Fi system, a wireless relay node, a wireless backhaul node, etc. The base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. The base station can include one or more co-site or non-co-site transmission points (Transmission Reception Point, TRP). The base station can also be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The base station can communicate with the terminal, or communicate with the terminal through a relay station. The terminal can communicate with multiple base stations of different technologies. For example, the terminal can communicate with a base station supporting the LTE network, and can also communicate with a base station supporting the 5G network. It can also establish dual connections with a base station supporting the LTE network and a base station supporting the 5G network.

[0064] In the embodiments provided herein, the terminal may be in various forms, such as a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a vehicle-mounted terminal device, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a wearable terminal device, etc. The terminal may also be sometimes referred to as a terminal device, user equipment (UE), access terminal device, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal device, mobile device, UE terminal device, terminal device, wireless communication device, UE agent or UE device, etc. The terminal may also be a fixed terminal or a mobile terminal.

[0065] As mentioned above, to reduce interference during communications, the communication protocol for the Physical Downlink Shared Channel (PDSCH) allows user equipment (UE) to adopt advanced signal processing technologies or algorithms by default. This improves the ability to suppress interference signals by implementing signal equalization, thereby improving signal reception quality and communication performance.

[0066] Currently, UEs can use the Linear Minimum Mean Square Error (LMMSE) algorithm, the Linear Minimum Mean Square Error-Interference Rejection Combining (LMMSE-IRC) algorithm, and the Extended Linear Minimum Mean Square Error-Interference Rejection Combining (E-LMMSE-IRC) algorithm to suppress interference signals.

[0067] Specifically, the LMMSE algorithm involves the UE constructing an equalization matrix based on channel and noise estimation. This equalization matrix reflects the channel state and noise conditions during signal transmission. Based on this equalization matrix, the LMMSE algorithm can improve signal transmission performance.

[0068] The LMMSE-IRC algorithm involves the UE constructing an equalization matrix based on channel estimation and interference noise estimation. This equalization matrix can reflect the channel state and interference noise conditions during signal transmission. Based on this equalization matrix, the LMMSE-IRC algorithm can improve signal transmission performance. Based on the LMMSE algorithm, the LMMSE-IRC algorithm uses interference suppression combination technology to improve the signal-to-noise ratio by suppressing interference, thereby reducing the bit error rate and improving the performance of the communication system. Therefore, compared to the LMMSE algorithm, the LMMSE-IRC algorithm is more suitable for communication environments with a large amount of interference and noise, and can better improve signal reception quality and communication system performance.

[0069] The E-LMMSE-IRC algorithm means that the UE constructs an equalization matrix based on factors such as channel estimation, co-scheduled UE channel estimation, and interference noise estimation. The equalization matrix can reflect the channel state, multi-user interference, and noise conditions during signal transmission. Moreover, based on the equalization matrix, the E-LMMSE-IRC algorithm can achieve signal equalization, thereby reducing multipath interference and spectrum leakage during communication to improve signal transmission performance. From the above principles, it can be seen that the E-LMMSE-IRC algorithm is more applicable in multi-user (Multi-User Multiple-Input Multiple-Output, MU-MIMO) scenarios.

[0070] In MU-MIMO scenarios, multiple users communicate simultaneously using the same spectrum resources, leading to severe interference and conflicts. Traditional LMMSE-IRC or LMMSE algorithms may encounter performance bottlenecks when handling this multi-user interference. The E-LMMSE-IRC algorithm, by introducing a nonlinear mapping function, can better handle multi-user interference, improving signal reception quality and communication system performance.

[0071] However, the E-LMMSE-IRC algorithm is highly complex, resulting in a corresponding increase in UE processing power consumption. Furthermore, the E-LMMSE-IRC algorithm is only applicable to MU-MIMO scenarios. If the UE is in a single-user (SU-MIMO) scenario, the increased processing power consumption of the UE will result in a decrease in PDSCH communication performance.

[0072] In view of this, the present application provides a communication system, method, and related equipment, the method comprising: sending indication information to a terminal device, the indication information indicating whether there is a co-scheduled user equipment, so that the terminal device receives the physical downlink shared channel (PDSCH) according to the reception algorithm corresponding to the indication information. As a result, when there is a co-scheduled user equipment, the terminal device can more efficiently receive and process the PDSCH according to the corresponding reception algorithm, which helps to reduce resource waste and improve resource utilization of the entire communication system. In addition, by reducing noise interference during communication through a suitable reception algorithm, it is also possible to improve signal quality and enhance communication reliability.

[0073] In order to make the technical solution of the present application clearer and easier to understand, the communication method of the present application is introduced below with reference to the accompanying drawings.

[0074] See Figure 2, which is a signaling diagram of a communication method provided in an embodiment of the present application. The communication method is applied to a communication system 20, which includes a network device 21 and a terminal device 22. The network device 21 can be a network device such as a base station, and the terminal device 22 can be a terminal device such as a mobile phone or a computer.

[0075] S201: The network device sends indication information to the terminal device, where the indication information indicates whether there is a co-scheduled user equipment.

[0076] Co-scheduled UE refers to multiple user devices scheduled by the network device 21 at the same time. These user devices can be terminal devices such as mobile phones, computers, and tablets. They communicate and transmit data by sharing network resources (such as spectrum and bandwidth). If there is a co-scheduled user device, it indicates that the network device 21 and the terminal device 22 are in a MU-MIMO scenario; if there is no co-scheduled user device, it indicates that the network device 21 and the terminal device 22 are in a SU-MIMO scenario. Among them, MU-MIMO refers to a MIMO system mode in which a base station uses multiple antennas to jointly serve multiple users on the same time-frequency resources, and SU-MIMO refers to a MIMO system mode in which a base station uses multiple antennas to serve only a single user on the same time-frequency resources.

[0077] In some specific implementations, the indication information may be provided via a broadcast message or a Radio Resource Control (RRC) configuration. That is, the network device 21 sends a broadcast message or an RRC configuration to the terminal device 22, thereby sending the indication information to the terminal device 22. RRC is a technology that manages, controls, and schedules radio resources through specific policies and methods. It aims to maximize the use of limited wireless network resources while meeting quality of service requirements, ensuring that the planned coverage area is reached, and maximizing service capacity and resource utilization.

[0078] In some examples, when MU-MIMO scheduling is not used for a long time due to a small number of antennas deployed in a cell, the network device 21 can send indication information to the terminal device 22 through a broadcast message or RRC configuration, thereby helping the terminal device 22 understand the current scheduling strategy and resource allocation. The indication information in this case is information indicating that there is no co-scheduled user equipment.

[0079] Specifically, the reason for not using MU-MIMO scheduling when the number of antennas deployed in a cell is small is that MU-MIMO technology leverages multiple antennas to simultaneously transmit multiple independent data streams, thereby achieving higher system capacity and spectral efficiency. When the number of antennas deployed in a cell is small, the multi-antenna gain cannot be fully utilized, so scheduling the transmission of multiple user data streams is unlikely to result in a significant performance improvement. Furthermore, with a small number of antennas, the signal processing and algorithm complexity required to implement MU-MIMO may increase significantly. This can lead to reduced stability and reliability of the communication system in actual operation.

[0080] Specifically, the methods for network device 21 to determine whether the number of antennas deployed in a cell is small may include the following two methods: First, directly determining whether the number of antennas in the cell corresponding to the network device is less than a first number threshold. If so, it can be determined that the number of antennas deployed in the cell is small. Second, utilizing the monitoring and measurement functions of network device 21 to detect one or more of the cell's traffic flow, signal quality, signal strength, and signal coverage. If the difference between the expected data and the actual data measured by the monitoring is greater than a first difference threshold, it can be determined that the number of antennas deployed in the cell is small. It should be noted that this application does not limit the specific determination method.

[0081] In other examples, when it is decided not to use MU-MIMO scheduling for a long time due to a relatively low cell load, the network device 21 may also send indication information to the terminal device 22 by broadcasting a message or RRC configuration, thereby helping the terminal device 22 understand the current scheduling strategy and resource allocation. In this case, the indication information is information indicating that there is no co-scheduled user equipment.

[0082] Specifically, the reason for not using MU-MIMO scheduling when the cell load is relatively low is that MU-MIMO scheduling helps improve spectrum efficiency and network capacity. However, under low load conditions, there is no spectrum competition, and the advantages of MU-MIMO cannot be fully utilized. In such cases, using MU-MIMO scheduling may result in a waste of spectrum resources. Therefore, when network equipment load is low, not using multi-user MU-MIMO scheduling for an extended period can reduce the complexity and computational overhead of network equipment, thereby improving its efficiency and stability.

[0083] Specifically, the network device 21 may determine whether the cell load is low in the following two ways: First, directly determine whether the load of the cell corresponding to the network device is lower than the second quantity threshold. If so, it can be determined that the cell load is low. Second, the network device 21 detects by measuring the cell traffic load. The network device 21 may monitor the cell traffic load, including uplink and downlink traffic. If the cell traffic load is low, the network device 21 may determine that the cell load is relatively low. It should be noted that this application does not limit the specific determination method.

[0084] The clarity of sending indication information through broadcast messages or RRC configuration is high, and terminal device 22 can clearly receive indication information indicating whether there is a co-scheduled user equipment, which helps terminal device 22 avoid confusion or uncertainty. In addition, network device 21 can quickly and dynamically adjust the indication information to adapt to different situations and needs, making the sending of indication information more flexible and efficient.

[0085] In other specific implementations, the indication information may also be indicated via downlink control information (DCI). That is, network device 21 sends a DCI indication to terminal device 22, thereby transmitting the indication information to terminal device 22. DCI is used to indicate downlink control information, including a combination of time domain, frequency domain, and modulation schemes. Once generated, DCI is channel coded and transmitted via the PDCCH.

[0086] In some examples, a 1-bit field can be directly introduced into the DCI, and the 1-bit field contains indication information for indicating whether there is a co-scheduled user equipment. For example, this 1-bit field can be a simple binary value, where 0 indicates that there is no co-scheduled user equipment, and 1 indicates that there is a co-scheduled user equipment. By introducing a 1-bit field, more information and control capabilities can be provided without increasing the DCI overhead, thereby better meeting the needs of the communication system. Moreover, as technology advances and demand increases, this 1-bit field can be easily expanded or modified to adapt to new needs. It should be noted that the above-mentioned 1-bit field is only an example. In actual applications, it can also be a 2-bit field, a 3-bit field, etc., which is not limited in this application.

[0087] In other examples, the antenna port field in the DCI can be reused, and new entries can be added to the original antenna port field or existing entries can be removed. The entries in the antenna port field are indication information. Specifically, the network device 21 can use the entries in the antenna port field in the DCI as indication information to indicate to the terminal device 22, thereby helping the terminal device 22 understand the current scheduling strategy and resource allocation. Among them, the antenna port field is an identifier or field used to identify or describe information related to the antenna port in the communication system. In the communication system, the antenna port can independently send and receive wireless signals, thereby achieving higher transmission rates and better signal quality.

[0088] Specifically, removing existing entries means that network device 21 deletes existing entries in the antenna port field to perform system adjustments, antenna replacement, or optimize transmission performance. By removing unnecessary entries, control information overhead can be reduced and resource utilization of the communication system can be optimized. Adding new entries means that network device 21 adds new entries to the antenna port field to indicate indication information, which helps to better manage downlink signal transmission and improve communication system performance.

[0089] Referring to Figure 3, which is a schematic diagram of an antenna port field provided in an embodiment of the present application, it can be seen from Figure 3 that an entry may include a Value, a Number of DMRS CDM group(s) without data, and a DMRSport(s).

[0090] Wherein, Value represents the sequence number of this entry, and each entry has a uniquely determined Value corresponding to it. In some examples, when the DCI indication sent by network device 21 to terminal device 22 includes Value=1, indication information can be sent according to the Number of DMRS CDM group(s)without data and DMRSport(s) corresponding to Value=1.

[0091] Number of DMRS CDM group(s)without data indicates the number of demodulation reference signal (DMRS) code division multiplexing (CDM) groups that currently have no data. A DMRS CDM group refers to a DMRS signal group that is multiplexed using CDM technology. DMRS is a reference signal used for channel estimation to demodulate data. In wireless communications, especially in systems such as LTE and 5G NR, DMRS is used as a reference signal to help the receiver perform channel estimation and phase calibration so that it can correctly demodulate the received data. CDM is a multiplexing method that uses different coding to distinguish between the original signals. In some examples, when Number of DMRS CDM group(s)without data = 1, it means that there is a DMRS CDM group that currently has no data multiplexed. When Number of DMRS CDM group(s)without data = 2, it means that there are two DMRS CDM groups that currently have no data multiplexed.

[0092] DMRSport(s) represents the identifier of the DMRS port (ports) used. A DMRS port refers to a physical or logical port used to send or receive a DMRS signal. In some examples, when DMRSport(s) = 0, it means that the DMRS signal is sent or received through port 0. In LTE or 5G NR systems, DMRS ports have a direct correspondence with antenna ports. Port 0 may correspond to a specific antenna or antenna combination for sending or receiving data. In other examples, when DMRSport(s) = {0, 1}, it means that the DMRS signal is sent or received through port 0 and port 1 at the same time. This typically occurs in MIMO (Multiple-Input Multiple-Output) transmission, where multiple antenna ports are used to send or receive data simultaneously to improve data throughput and / or link reliability. In this case, port 0 and port 1 may correspond to two different layers or streams of spatial multiplexing.

[0093] As can be seen from Figure 3, the entries corresponding to Value = 12, 13, and 14 are the newly added entries. It should be noted that the newly added entries usually indicate that the user equipment UE believes that the remaining DMRS ports are used for co-scheduled user equipment. That is to say, if the new entry added to the antenna port field in the DCI (i.e., the entry corresponding to Value = 12, 13, and 14) is used to transmit indication information, then the indication information usually indicates that there is a co-scheduled user equipment in the cell, and the network device 21 is in a MU-MIMO scenario, and then the E-LMMSE-IRC receiver can be selected based on the specific interference estimation.

[0094] In some specific implementations, multiple new entries can be configured, and the Media Access Control Control Element (MAC-CE) selects which new entry or entries to activate, so that the network device 21 transmits indication information to the terminal device 22 through the new entry added to the antenna port field in the DCI.

[0095] See Figure 4A, which is a schematic diagram of another antenna port field provided in an embodiment of the present application. See Figure 4B, which is a schematic diagram of a third antenna port field provided in an embodiment of the present application. Figures 4A and 4B are used to configure the antenna port field for DMRS configuration type 1 and DMRS configuration type 2, respectively, and for DMRS symbol data that is all 1. In Figure 4A, the entries corresponding to Value = 12-14 are the newly added entries. In Figure 4B, the entries corresponding to Value = 25-31 are the newly added entries.

[0096] Refer to Figure 5A, which is a schematic diagram of a DMRS configuration type 1 provided in an embodiment of the present application. PDSCH DMRS configuration type 1 supports 8 DMRS ports, mapped to 2 CDM groups. Refer to Figure 5B, which is a schematic diagram of a DMRS configuration type 2 provided in an embodiment of the present application. PDSCH DMRS configuration type 2 supports 12 DMRS ports, mapped to 2 CDM groups. It can be seen that the main difference between DMRS configuration type 1 and DMRS configuration type 2 lies in the configuration method of frequency domain resources and the number of supported antenna ports. First, the difference in the configuration method of frequency domain resources is that DMRS configuration type 1 allocates every two resource elements to DMRS, which increases the density of DMRS. The higher the density, the greater the overhead. In the case of MU-MIMO, this reduces the scope of frequency multiplexing with DMRS belonging to other UEs. DMRS configuration type 2 supports allocating every three pairs of resource elements to DMRS, which increases the scope of frequency multiplexing and correspondingly increases the scope of MU-MIMO. Secondly, the difference in the number of supported antenna ports is that for each symbol's resource element, DMRS configuration type 1 uses 50% of the resources, while DMRS configuration type 2 uses 33%. In terms of antenna port support, DMRS configuration type 1 supports a maximum of 4 and 8 antenna ports in single and dual symbol scenarios, respectively. DMRS configuration type 2 supports a maximum of 6 and 12 antenna ports in single and dual symbol scenarios, respectively.

[0097] It should be noted that the entries in Figures 3, 4A, and 4B are only examples, and the above entries may be selected from existing entries or may be new entries configured by RRC. This application does not limit the specific entries.

[0098] In other specific implementations, when the network device 21 is configured with two transport blocks (TB), joint indication can be performed through the antenna port field in the DCI and one of the modulation and coding scheme (MCS), new data indicator (NDI), and redundancy version (RV).

[0099] The MCS in the DCI indicates the modulation and coding schemes. The modulation scheme defines the waveform and phase of the signal, effectively resistant to interference and noise during transmission over the channel. The coding scheme defines the redundancy and verification mechanism for data transmission to improve data reliability and error correction capabilities. Therefore, the MCS is used to optimize signal transmission performance.

[0100] The NDI is an identifier used to identify new data within a transport block. In communication systems, particularly those like LTE, the NDI is used to distinguish new data from retransmitted data within the same transport block. During data transmission, data may need to be retransmitted to improve reliability. To distinguish new data from retransmitted data, the NDI is introduced into the transport block. When data in a transport block is marked as new data, the corresponding NDI is set to a specific value; when data is marked as a retransmission, the NDI is set to another specific value. By using the NDI, the receiver can distinguish between new and retransmitted data and process it accordingly. This is crucial for ensuring correct data decoding and avoiding duplicate processing of retransmitted data.

[0101] RV is used to indicate the redundancy version and is used in error correction mechanisms such as HARQ. It helps to increase the fault tolerance of the communication system and ensure the reliability of data transmission.

[0102] The above method for indicating information has the following advantages: First, reusing the antenna port field in the DCI and one or more of the three MCS, NDI, and RV for indication can reduce additional signaling overhead. This is because this information has already been transmitted in the DCI, and by reusing the field, additional signal transmission and parsing processes can be avoided, thereby improving communication efficiency. Secondly, this joint indication method can maintain the maximum freedom of DMRS ports indication. Since the correspondence between DMRS ports and antennas is very important for demodulation, maintaining the maximum degree of freedom can better support multi-antenna configurations and multiplexing schemes, thereby improving the flexibility of the communication system.

[0103] Specifically, when the DMRS configuration type is 1 and the maximum number of DMRS symbols is 2, or when the DMRS configuration type is 2 and the maximum number of DMRS symbols is 1, or when the DMRS configuration type is 2 and the maximum number of DMRS symbols is 2, the indication information can be sent using the above-mentioned joint indication method.

[0104] See Figure 6, which is a schematic diagram of the fourth antenna port field provided in an embodiment of the present application. If the MCS of each of the 2TB in the DCI is not equal to 26 or the RV is not equal to 1, it proves that both 2TB are activated, that is, 2TB are transmitted normally. As can be seen from Figure 6, the entry corresponding to Value = 2-25 in Two Codeword is the newly added entry. It should be noted that the newly added entry is usually characterized as the current PDSCH adopting MU-MIMO. That is to say, if Antennaport indicates an existing entry, the terminal device 22 believes that the current PDSCH adopts SU-MIMO. If Antenna port indicates a newly introduced entry, the terminal device 22 believes that the current PDSCH adopts MU-MIMO.

[0105] If the MCS of each of the 2TB in the DCI is equal to 26 and the RV is equal to 1, it proves that only 1TB is activated. At this time, the terminal device 22 believes that the current PDSCH adopts SU-MIMO.

[0106] See Figure 7A, which is a schematic diagram of the fifth antenna port field provided in an embodiment of the present application. See Figure 7B, which is a schematic diagram of the sixth antenna port field provided in an embodiment of the present application. See Figure 7C, which is a schematic diagram of the seventh antenna port field provided in an embodiment of the present application. See Figure 7D, which is a subsequent schematic diagram of Figure 7C. Among them, Figure 7A is the antenna port field when DMRS configuration type 1 and the maximum number of DMRS symbols is 2, Figure 7B is the antenna port field when DMRS configuration type 2 and the maximum number of DMRS symbols is 1, and Figures 7C and 7D are the antenna port fields when DMRS configuration type 2 and the maximum number of DMRS symbols is 2. In Figure 7A, the entries corresponding to Value = 4-30 when Two Codeword are the newly added entries. In Figure 7B, the entries corresponding to Value = 2-22 when Two Codeword are the newly added entries. In Figures 7C and 7D, the entries corresponding to Value = 6-60 when Two Codeword are the newly added entries.

[0107] It should be noted that the entries in Figures 6, 7A, 7B, 7C, and 7D are only examples, and the above entries may be selected from existing entries or may be new entries configured by RRC. This application does not limit the specific entries.

[0108] Specifically, if some entries are selected from existing entries, then the entries indicated during One Codeword can be reused. If the entries are completely new entries configured by RRC, multiple new entries can be configured, and the Media Access Control Control Element (MAC-CE) selects which one or several new entries to activate, so that the network device 21 transmits the indication information to the terminal device 22 through the new entries added to the antenna port field in the DCI.

[0109] S202: If the indication information indicates that there is no co-scheduled user equipment, the terminal device does not use the E-LMMSE-IRC algorithm to receive the PDSCH.

[0110] After obtaining the indication information indicating that there is no co-scheduled user equipment, the terminal device 22 can select a suitable receiving algorithm, such as the LMMSE algorithm or the LMMSE-IRC algorithm, to construct a corresponding equalization matrix W to perform equalization processing on the PDSCH signal.

[0111] In some specific implementations, the relationship between the received signal vector corresponding to the terminal device 22 and the estimated transmitted signal corresponding to the network device 21 is established by the influence of the channel and noise. Specifically, this relationship can be reflected by the following formula (1):

[0112] in, is the estimated transmitted signal, W is the equalization matrix, and y is the received signal vector. Specifically, the estimated transmitted signal refers to the original transmitted signal that is desired to be recovered from the received signal. The equalization matrix represents the various noise and interference introduced during the reception process. The received signal vector refers to the signal received by terminal device 22.

[0113] Specifically, the equilibrium matrix W can generally be expressed by the following formula (2):

[0114] Where W is the equilibrium matrix, is the channel estimation matrix of the desired signal, and R is the correlation matrix. It can be understood that the main difference between different receiving algorithms lies in the calculation method of the correlation matrix R.

[0115] In some examples, the correlation matrix R of the LMMSE algorithm can be expressed as follows:

[0116] Where R is the correlation matrix, is the channel estimation matrix of the desired signal, σ 2is the noise variance, I is the identity matrix, and its size is the same as the number of columns of the channel estimation matrix.

[0117] In other examples, the correlation matrix R of the LMMSE-IRC algorithm can be expressed by the following formula (4):

[0118] Where R is the correlation matrix, is the channel estimation matrix of the desired signal, is the interference signal estimated on the DMRS, r is the DMRS received signal, d0 is the modulation symbol of the desired DMRS, N is the number of elements in the vector, and H is the conjugate transpose operation.

[0119] S203: If the indication information indicates that there is a co-scheduled user equipment, the terminal device uses the E-LMMSE-IRC algorithm to receive the PDSCH.

[0120] After obtaining the indication information indicating that there is no co-scheduled user equipment, the terminal device 22 may select the E-LMMSE-IRC algorithm to construct a corresponding equalization matrix W to perform equalization processing on the PDSCH signal.

[0121] In some examples, the correlation matrix of the E-LMMSE-IRC algorithm can be expressed as follows:

[0122] Where R is the correlation matrix, is the channel estimation matrix of the desired signal, The channel estimation matrix for the main interference source (e.g., another UE in MU-MIMO), is the interference signal estimated on the DMRS, r is the DMRS received signal, d0 is the modulation symbol of the desired DMRS, d1 is the modulation symbol of the main interference source DMRS, N is the number of elements in the vector r~, and H is the conjugate transpose operation.

[0123] In summary, the embodiments of the present application provide a communication system comprising a network device and a terminal device. When a co-scheduled user device is present, PDSCH is received according to the E-LMMSE-IRC algorithm. When a co-scheduled user device is not present, PDSCH is received according to the LMMSE or LMMSE-IRC algorithm. This helps reduce resource waste and improve resource utilization in the communication system. Furthermore, by reducing noise interference during communication through an appropriate reception algorithm, signal quality can be improved, thereby enhancing communication reliability.

[0124] See Figure 8, which is a schematic diagram of a communication method provided in an embodiment of the present application. The communication method is applied to network equipment such as a base station, and the method includes:

[0125] S801: Detect whether there is a co-scheduled user equipment among the terminal devices communicating with the network device.

[0126] S802: If yes, send first indication information to the terminal device, so that the terminal device receives the physical downlink shared channel PDSCH according to the extended linear minimum mean square error-interference rejection combination E-LMMSE-IRC algorithm.

[0127] S803: If not, send second indication information to the terminal device, so that the terminal device receives the PDSCH according to the linear minimum mean square error LMMSE algorithm or the minimum mean square error-interference suppression combination LMMSE-IRC algorithm.

[0128] See Figure 9, which is a schematic diagram of another communication method provided in an embodiment of the present application. The communication method is applied to terminal devices such as mobile phones and computers, and the method includes:

[0129] S901: If first indication information sent by a network device is received, a PDSCH is received according to an E-LMMSE-IRC algorithm, where the first indication information indicates that a co-scheduled user equipment exists.

[0130] S902: If second indication information sent by the network device is received, the PDSCH is received according to the LMMSE algorithm or the LMMSE-IRC algorithm, where the second indication information indicates that there is no co-scheduled user equipment.

[0131] It should be noted that the above communication method has similar static effects to the above communication system, which will not be described in detail here.

[0132] Based on the aforementioned communication method, the present application also provides an electronic device for executing the aforementioned communication method, which will be described below in conjunction with embodiments.

[0133] Refer to Figure 10, which is a schematic diagram of the hardware composition of an electronic device provided in an embodiment of the present application. The electronic device can be a first device, including but not limited to a base station and a core network unit. Figure 10 shows a simplified schematic diagram of the base station structure. The base station includes parts 410, 420, and 430. Part 410 is mainly used for baseband processing, controlling the base station, etc.; Part 410 is usually the control center of the base station, which can usually be called a processor, and is used to control the base station to perform the processing operations on the first device side in the above method embodiment. Part 420 is mainly used to store computer program code and data. Part 430 is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals into baseband signals; Part 430 can usually be called a transceiver module, a transceiver, a transceiver circuit, or a transceiver, etc. The transceiver module of part 430 can also be called a transceiver or a transceiver, etc., which includes an antenna 433 and a radio frequency circuit (not shown in the figure), wherein the radio frequency circuit is mainly used for radio frequency processing. Alternatively, the device for implementing the receiving function in section 430 may be considered a receiver, and the device for implementing the transmitting function may be considered a transmitter, that is, section 430 includes receiver 432 and transmitter 431. The receiver may also be referred to as a receiving module, receiver, or receiving circuit, and the transmitter may be referred to as a transmitting module, transmitter, or transmitting circuit, etc.

[0134] Sections 410 and 420 may include one or more boards, each of which may include one or more processors and one or more memories. The processor is used to read and execute programs in the memory to implement baseband processing functions and control the base station. If multiple boards are present, the boards may be interconnected to enhance processing capabilities. As an optional implementation, multiple boards may share one or more processors, multiple boards may share one or more memories, or multiple boards may simultaneously share one or more processors.

[0135] For example, in one implementation, the transceiver module in section 430 is used to execute the transceiver-related processes executed by the base station (first device) in the aforementioned method embodiment. The processor in section 410 is used to execute the processing-related processes executed by the base station in the aforementioned method embodiment.

[0136] It should be understood that FIG10 is merely an example and not a limitation, and the network device including the processor, memory, and transceiver may not rely on the structure shown in FIG10 .

[0137] Referring to Figure 11, this figure is a schematic diagram of the hardware composition of another electronic device provided in an embodiment of the present application. The electronic device can be a second device, and the second device can be a terminal device, including but not limited to electronic devices such as mobile phones and smart wearable devices (such as smart watches). Taking a mobile phone as an example, the electronic device may include a processor 510, an external memory interface 520, an internal memory 521, an antenna 1, an antenna 2, a mobile communication module 530, and a wireless communication module 540, etc.

[0138] It should be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the electronic device. In other embodiments, the electronic device may include more or fewer components than shown, or some components may be combined or separated, or the components may be arranged differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0139] The processor 510 may include one or more processing units. For example, the processor 510 may include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU). Different processing units may be independent devices or integrated into one or more processors.

[0140] It is understood that the interface connection relationship between the modules illustrated in this embodiment is only a schematic illustration and does not constitute a structural limitation of the electronic device. In other embodiments of the present application, the electronic device may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

[0141] The external memory interface 520 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the electronic device. The external memory card communicates with the processor 510 via the external memory interface 520 to implement data storage functions. For example, files such as music and videos can be stored on the external memory card.

[0142] The internal memory 521 can be used to store computer executable program code, and the executable program code includes instructions. The processor 510 executes various functional applications and data processing of the electronic device by running the instructions stored in the internal memory 521. The internal memory 521 may include a program storage area and a data storage area. Among them, the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc. The data storage area can store data created during the use of the electronic device (such as audio data, a phone book, etc.), etc. In addition, the internal memory 521 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc. The processor 510 executes various functional applications and data processing of the electronic device by running the instructions stored in the internal memory 521, and / or the instructions stored in the memory provided in the processor.

[0143] The wireless communication function of the electronic device can be implemented through antenna 1, antenna 2, mobile communication module 530, wireless communication module 540, modem processor and baseband processor.

[0144] Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in an electronic device can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization. For example, antenna 1 can be reused as a diversity antenna for a wireless local area network. In other embodiments, the antennas can be used in conjunction with a tuning switch.

[0145] The mobile communication module 530 can provide solutions for wireless communications including 2G / 3G / 4G / 5G applied to electronic devices. The mobile communication module 530 may include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), etc. The mobile communication module 530 can receive electromagnetic waves from the antenna 1, and filter, amplify, and process the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. The mobile communication module 530 can also amplify the signal modulated by the modulation and demodulation processor, and convert it into electromagnetic waves for radiation through the antenna 1. In some embodiments, at least some of the functional modules of the mobile communication module 530 can be set in the processor 510. In some embodiments, at least some of the functional modules of the mobile communication module 530 can be set in the same device as at least some of the modules of the processor 510.

[0146] In some embodiments, the electronic device initiates or receives a call request through the mobile communication module 530 and the antenna 1 .

[0147] Furthermore, an operating system runs on the aforementioned components, such as the iOS operating system, the Android operating system, and the Windows operating system. Application programs can be installed and run on the operating system. Those skilled in the art will clearly understand that, for ease of description and brevity, the explanation and beneficial effects of any of the aforementioned electronic devices can be referred to the corresponding method embodiments provided above, and will not be further elaborated here.

[0148] Referring to Figure 12 , which is a schematic diagram of a communication device provided in an embodiment of the present application, communication device 1200 is applied to a network device and includes a transmitting module 1201 configured to transmit indication information to a terminal device, the indication information indicating whether a co-scheduled user equipment exists, so that the terminal device receives a physical downlink shared channel (PDSCH) according to a reception algorithm corresponding to the indication information.

[0149] As a result, when there are co-scheduled user devices, the terminal device can more efficiently receive and process the PDSCH according to the corresponding reception algorithm, which helps reduce resource waste and improve resource utilization of the entire communication system. In addition, by reducing noise interference during communication through appropriate reception algorithms, signal quality can be improved and communication reliability can be enhanced.

[0150] Referring to Figure 13, which is a schematic diagram of another communication device provided in an embodiment of the present application, the communication device 1300 is applied to a terminal device and includes: a first receiving module 1301 and a second receiving module 1302;

[0151] The first receiving module 1301 is configured to receive indication information sent by a network device, where the indication information indicates whether there is a co-scheduled user equipment. The second receiving module 1302 is configured to receive a PDSCH according to a receiving algorithm corresponding to the indication information.

[0152] As a result, when there are co-scheduled user devices, the terminal device can more efficiently receive and process the PDSCH according to the corresponding reception algorithm, which helps reduce resource waste and improve resource utilization of the entire communication system. In addition, by reducing noise interference during communication through appropriate reception algorithms, signal quality can be improved and communication reliability can be enhanced.

[0153] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and apparatuses described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

Claims

1. A communication method, characterized in that: Applied to a network device, the method includes: Detecting the presence of a co-scheduled user equipment in a terminal device communicating with the network device; Sending first indication information to the terminal device, where the first indication information indicates that there is a co-scheduled user equipment, so that the terminal device receives the PDSCH according to an extended linear minimum mean square error-interference rejection combining E-LMMSE-IRC algorithm; Detecting that there is no co-scheduled user equipment in the terminal device communicating with the network device; Send second indication information to the terminal device, where the second indication information indicates that there is no co-scheduled user equipment, so that the terminal device receives PDSCH according to the linear minimum mean square error LMMSE algorithm or the minimum mean square error-interference suppression combination LMMSE-IRC algorithm.

2. The method according to claim 1, characterized in that The sending the second indication information to the terminal device includes: Send a broadcast message and / or radio resource control RRC configuration to the terminal device, wherein the broadcast message and / or RRC configuration includes second indication information.

3. The method according to claim 2, characterized in that The sending a broadcast message and / or an RRC configuration to the terminal device includes: If the number of antennas in the cell corresponding to the network device is lower than a first quantity threshold, or the load of the cell corresponding to the network device is lower than a second quantity threshold, a broadcast message and / or RRC configuration is sent to the terminal device.

4. The method according to claim 3, characterized in that The sending first indication information to the terminal device includes: Send downlink control information DCI indication to the terminal device, where the DCI indication includes first indication information.

5. The method according to claim 4, characterized in that The sending of a downlink control information DCI indication to the terminal device, wherein the DCI indication includes first indication information, includes: A DCI indication is sent to the terminal device, where the DCI indication includes a target bit field, and the target bit field includes first indication information.

6. The method according to claim 5, characterized in that The sending of a downlink control information DCI indication to the terminal device, wherein the DCI indication includes first indication information, includes: A DCI indication is sent to the terminal device, where the DCI indication includes a newly added entry of the antenna port, and the newly added entry of the antenna port represents the first indication information.

7. The method according to claim 1, characterized in that The sending of the first indication information to the terminal device, or the sending of the second indication information to the terminal device, includes: When the network device is configured with two transport blocks TB, a DCI indication is sent to the terminal device, wherein the DCI indication includes an antenna port field, and one or more of a modulation and coding scheme MCS, a new data indicator NDI, and a redundancy version RV. The antenna port field, and one or more of the MCS, NDI, and RV jointly represent the first indication information or the second indication information.

8. The method according to claim 7, characterized in that When the network device is configured with two transport blocks TB, sending a DCI indication to the terminal device includes: When the network device satisfies one of the following conditions: the demodulation reference signal DMRS is of the first DMRS configuration type and the maximum number of DMRS symbols is 2, or the second DMRS configuration type and the maximum number of DMRS symbols is 1, or the second DMRS configuration type and the maximum number of DMRS symbols is 2, a DCI indication is sent to the terminal device.

9. The method according to claim 7, characterized in that The DCI indication includes an antenna port field, and one or more of a modulation and coding scheme MCS, a new data indicator NDI, and a redundancy version RV. The antenna port field and one or more of the MCS, NDI, and RV jointly represent the first indication information or the second indication information, including: If the DCI indication indicates that the MCS of the two TBs is not equal to the first target value or the RV of the two TBs is not equal to the second target value, and the DCI indication includes a newly added entry of the antenna port field, the DCI indication indicates the first indication information.

10. The method according to claim 7, characterized in that The DCI indication includes an antenna port field, and one or more of a modulation and coding scheme MCS, a new data indicator NDI, and a redundancy version RV. The antenna port field and one or more of the MCS, NDI, and RV jointly represent the first indication information or the second indication information, including: If the DCI indication indicates that the MCS of the two TBs is not equal to the first target value or the RV of the two TBs is not equal to the second target value, and the DCI indication includes entries other than the newly added entry in the antenna port field, the DCI indication indicates the second indication information.

11. The method according to claim 7, characterized in that The DCI indication includes an antenna port field, and one or more of a modulation and coding scheme MCS, a new data indicator NDI, and a redundancy version RV. The antenna port field and one or more of the MCS, NDI, and RV jointly represent the first indication information or the second indication information, including: If the DCI indication represents that the MCS of a TB is equal to a first target value and the RV of the TB is equal to a second target value, the DCI indication represents second indication information.

12. The method according to any one of claims 6, 9 and 10, characterized in that The newly added entry is activated by the media access control-control element MAC-CE.

13. A communication method, characterized in that: Applied to a terminal device, the indication information includes first indication information and second indication information, the first indication information indicates the presence of a co-scheduled user equipment, and the second indication information indicates the absence of a co-scheduled user equipment, the method including: receiving indication information sent by a network device, where the indication information indicates whether there is a co-scheduled user equipment; If first indication information sent by the network device is received, receiving the PDSCH according to the E-LMMSE-IRC algorithm, wherein the first indication information indicates that there is a co-scheduled user equipment; If second indication information sent by the network device is received, the PDSCH is received according to the LMMSE algorithm or the LMMSE-IRC algorithm, where the second indication information indicates that there is no co-scheduled user equipment.

14. The method according to claim 13, characterized in that The receiving the second indication information sent by the network device includes: A broadcast message and / or RRC configuration sent by the network device is received, where the broadcast message and / or RRC configuration includes second indication information.

15. The method according to claim 13, characterized in that The receiving of first indication information sent by the network device includes: A DCI indication sent by the network device is received, where the DCI indication includes first indication information.

16. The method according to claim 15, characterized in that The receiving a DCI indication sent by the network device, where the DCI indication includes first indication information, includes: A DCI indication sent by the network device is received, where the DCI indication includes a target bit field, and the target bit field includes first indication information.

17. The method according to claim 15, characterized in that The receiving a DCI indication sent by the network device, where the DCI indication includes first indication information, includes: A DCI indication sent by the network device is received, where the DCI indication includes a newly added entry of an antenna port, and the newly added entry of the antenna port represents first indication information.

18. The method according to claim 13, characterized in that The receiving of first indication information sent by the network device, or the receiving of second indication information sent by the network device, includes: When the network device is configured with two TBs, a DCI indication sent by the network device is received, wherein the DCI indication includes an antenna port field and one or more of MCS, NDI and RV, and the antenna port field and one or more of MCS, NDI and RV jointly represent the first indication information or the second indication information.

19. The method according to claim 18, characterized in that When the network device is configured with two TBs, receiving a DCI indication sent by the network device includes: When the network device satisfies one of the following conditions: DMRS is of the first DMRS configuration type and the maximum number of DMRS symbols is 2, or, the second DMRS configuration type and the maximum number of DMRS symbols is 1, or, the second DMRS configuration type and the maximum number of DMRS symbols is 2, the DCI indication sent by the network device is received.

20. The method according to claim 18, wherein The DCI indication includes an antenna port field, and one or more of a modulation and coding scheme MCS, a new data indicator NDI, and a redundancy version RV. The antenna port field and one or more of the MCS, NDI, and RV jointly represent the first indication information or the second indication information, including: If the DCI indication indicates that the MCS of the two TBs is not equal to the first target value or the RV of the two TBs is not equal to the second target value, and the DCI indication includes a newly added entry of the antenna port field, the DCI indication indicates the first indication information.

21. The method according to claim 18, wherein The DCI indication includes an antenna port field, and one or more of a modulation and coding scheme MCS, a new data indicator NDI, and a redundancy version RV. The antenna port field and one or more of the MCS, NDI, and RV jointly represent the first indication information or the second indication information, including: If the DCI indication indicates that the MCS of the two TBs is not equal to the first target value or the RV of the two TBs is not equal to the second target value, and the DCI indication includes entries other than the newly added entry in the antenna port field, the DCI indication indicates the second indication information.

22. The method according to claim 18, wherein The DCI indication includes an antenna port field, and one or more of a modulation and coding scheme MCS, a new data indicator NDI, and a redundancy version RV. The antenna port field and one or more of the MCS, NDI, and RV jointly represent the first indication information or the second indication information, including: If the DCI indication represents that the MCS of a TB is equal to a first target value and the RV of the TB is equal to a second target value, the DCI indication represents second indication information.

23. The method according to any one of claims 17, 20 and 21, characterized in that The newly added entry is activated by MAC-CE.

24. A network device, characterized in that: The network equipment includes: Memory for storing computer programs or computer instructions; A processor, configured to execute a computer program or computer instruction stored in the memory, so that the network device executes the method according to any one of claims 1 to 12.

25. A terminal device, characterized in that: The terminal device includes: Memory for storing computer programs or computer instructions; A processor, configured to execute a computer program or computer instruction stored in the memory, so that the terminal device executes the method according to any one of claims 13 to 23.

26. A communication system, characterized in that: The system includes a terminal device and the network device, the network device is used to execute the method according to any one of claims 1 to 12, and the terminal device is used to execute the method according to any one of claims 13 to 23.

27. A computer storage medium for storing a computer program, wherein when the computer program is executed, the computer program is used to implement the method according to any one of claims 1 to 23.

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