A communication system, method and related equipment

Abstract

The present application provides a communication system, method and related equipment, and relates to the field of communication technology. The method includes: 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 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 effectively 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.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication system, method and related equipment. Background Art

[0002] In the communication system, interference refers to some unstable radio waves that hinder the reception of radio signals. The sources of these interferences can be other radio equipment, lightning, industrial noise, etc. Interference will have a negative impact on the performance of the communication system, such as reducing signal quality, increasing bit error rate, and affecting user experience. In order to reduce interference during communication, for the Physical Downlink Shared Channel (PDSCH), the communication protocol defaults to allowing user equipment (UE) to use advanced signal processing technology or algorithms to improve the ability to suppress interference by implementing signal equalization, thereby improving signal transmission performance.

[0003] In the related technology, the UE can use the extended linear minimum mean square error-interference rejection combination (E-LMMSE-IRC) algorithm to construct an equalization matrix based on factors such as channel estimation, co-scheduled user equipment (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.

[0004] However, the complexity of the above E-LMMSE-IRC algorithm is relatively high, which will increase the processing power consumption of the UE accordingly. In addition, the E-LMMSE-IRC algorithm is only applicable to multi-user (Multi-User Multiple-Input Multiple-Output, MU-MIMO) scenarios. If the UE is in a single-user (Single-User Multiple-Input Multiple-Output, SU-MIMO) scenario, the communication performance of the PDSCH will decrease when the processing power consumption of the UE increases. Summary of the invention

[0005] The purpose of this application is to provide a communication system, method and related equipment, which can improve the communication performance of PDSCH.

[0006] In the first aspect, the present application provides a communication method, which is applied to a network device, and the method includes: 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 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 effectively 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, signal quality can be improved and communication reliability can be improved.

[0007] In some specific implementations, indication information is sent 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 receiving algorithm corresponding to the indication information, including: sending first indication information to the terminal device, the first indication information indicating 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, the second indication information indicating 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.

[0008] In some specific implementations, it is detected whether there is a co-scheduled user device in the terminal device communicating with the network 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 suppression 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, signal quality can be improved and communication reliability can be improved.

[0009] 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, the indication information sent through the broadcast message or the RRC configuration is more clear, 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 higher.

[0010] 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. Thus, the indication information sent by broadcast messages or RRC configurations is more clear, 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 higher.

[0011] 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, wherein the DCI indication includes the first indication information.

[0012] In some specific implementations, a downlink control information DCI indication is sent to a terminal device, and the DCI indication includes the first indication information, including: sending a DCI indication to a terminal device, the DCI indication includes a field of a target bit, and the field of the target bit includes the first indication information. Thus, more information and control capabilities can be provided without increasing the DCI overhead, thereby better meeting the needs of the communication system. Moreover, with the advancement of technology and the increase in demand, this 1-bit field can be easily expanded or modified to adapt to new needs.

[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 newly added entry of an antenna port, wherein the newly added entry of 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 strategy and resource allocation.

[0014] In some specific implementations, sending a first indication information to a terminal device, or sending a second indication information to a terminal device, includes: when the network device is configured with two transmission blocks TB, sending a DCI indication to the terminal device, the DCI indication includes an antenna port field, and, one or more of the modulation and coding scheme MCS, the new data indicator NDI and the redundant 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. The indication of 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 the three MCS, NDI and RV for indication can reduce additional signaling overhead. This is because this information has been transmitted in the DCI, and the additional signal transmission and parsing process can be avoided by multiplexing the field, thereby improving communication efficiency. Secondly, this joint indication method can maintain the maximum degree of freedom of the DMRS ports indication. Since the correspondence between the DMRS port and the antenna is very important for demodulation, by maintaining the maximum degree of freedom, multi-antenna configuration and multiplexing schemes can be better supported, thereby improving the flexibility of the communication system.

[0015] In some specific implementations, when the network device is configured with two transmission blocks TB, a DCI indication is sent to the terminal device, including: when the network device satisfies one of the following three 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.

[0016] 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.

[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 entries other than the newly added entries in the antenna port field, the DCI indication represents the second 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 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.

[0019] In some specific implementations, the newly added entry is activated by a media access control-control element MAC-CE.

[0020] In the second aspect, the present application discloses a communication method, which is applied to a terminal device, and the method includes: receiving indication information sent by a network device, the indication information indicating whether there is a co-scheduled user device; receiving 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 effectively 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, signal quality can be improved and communication reliability can be improved.

[0021] In some specific implementations, if the first indication information sent by the network device is received, the PDSCH is received according to the E-LMMSE-IRC algorithm, and the first indication information indicates the existence of a co-scheduled user device; if the second indication information sent by the network device is received, the 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, 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, signal quality can be improved and communication reliability can be improved.

[0022] 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 by 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 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 higher.

[0023] In some specific implementations, receiving first indication information sent by a network device includes: receiving a DCI indication sent by the network device, wherein the DCI indication includes the first indication information.

[0024] In some specific implementations, a DCI indication sent by a network device is received, and the DCI indication includes the first indication information, including: a DCI indication sent by a network device is received, and the DCI indication includes a field of a target bit, and the field of 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. Moreover, with the advancement of technology and the increase in demand, this 1-bit field can be easily expanded or modified to adapt to new needs.

[0025] In some specific implementations, a DCI indication sent by a network device is received, and the DCI indication includes first indication information, including: a DCI indication sent by a network device is received, and the DCI indication includes a newly added entry of an antenna port, and the newly added entry of 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 strategy and resource allocation.

[0026] In some specific implementations, receiving the first indication information sent by the network device, or receiving the second indication information sent by the network device, includes: when the network device is configured with two TBs, receiving the DCI indication sent by the network device, the DCI indication includes the 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 characterize the first indication information or the second indication information. The indication of 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 additional signal transmission and parsing process can be avoided by reusing the field, thereby improving communication efficiency. Secondly, this joint indication method can maintain the maximum degree of freedom of the DMRS ports indication. Since the correspondence between the DMRS port and the antenna is very important for demodulation, by maintaining the maximum degree of freedom, multi-antenna configuration and multiplexing schemes can be better supported, thereby improving the flexibility of the communication system.

[0027] 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 three conditions: the 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.

[0028] 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.

[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 entries other than the newly added entries in the antenna port field, the DCI indication represents the second 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 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.

[0031] In some specific implementations, the newly added entry is activated by the MAC-CE.

[0032] In a third aspect, the present application provides a network device, comprising: a memory for storing computer programs or computer instructions; 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.

[0033] In a fourth aspect, the present application provides a terminal device, comprising: a memory for storing a computer program or computer instructions; and a processor for executing the computer program or computer instructions stored in the memory, so that the terminal device executes the method of the second aspect.

[0034] 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.

[0035] 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 aspect and the second aspect.

[0036] In the 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, and 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 effectively 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.

[0037] In an eighth aspect, the present application provides a communication device, which is applied to a terminal device, comprising: 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 effectively 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, signal quality can be improved and communication reliability can be improved.

[0038] Based on the above technical solution, this application has the following beneficial effects:

[0039] 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 a physical downlink shared channel PDSCH according to a receiving algorithm corresponding to the indication information. Thus, when there is a co-scheduled user equipment, the terminal device can receive and process the PDSCH more effectively 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, signal quality can be improved and communication reliability can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 An example diagram of a scenario of communication between a base station and a terminal provided in an embodiment of the present application;

[0041] Figure 2 A signaling diagram of a communication method provided in an embodiment of the present application;

[0042] Figure 3 A schematic diagram of an antenna port field provided in an embodiment of the present application;

[0043] Figure 4A A schematic diagram of another antenna port field provided in an embodiment of the present application;

[0044] Figure 4B A schematic diagram of a third antenna port field provided in an embodiment of the present application;

[0045] Figure 5A A schematic diagram of a DMRS configuration type 1 provided in an embodiment of the present application;

[0046] Figure 5B A schematic diagram of a DMRS configuration type 2 provided in an embodiment of the present application;

[0047] Figure 6 A schematic diagram of a fourth antenna port field provided in an embodiment of the present application;

[0048] Fig. 7A A schematic diagram of a fifth antenna port field provided in an embodiment of the present application;

[0049] Figure 7B A schematic diagram of a sixth antenna port field provided in an embodiment of the present application;

[0050] Figure 7C A schematic diagram of a seventh antenna port field provided in an embodiment of the present application;

[0051] Fig.7D for Figure 7C The subsequent schematic diagram of

[0052] Figure 8 A schematic diagram of a communication method provided in an embodiment of the present application;

[0053] Fig. 9 A schematic diagram of another communication method provided in an embodiment of the present application;

[0054] Fig.10 A schematic diagram of the hardware composition of an electronic device provided in an embodiment of the present application;

[0055] Fig.11 A schematic diagram of the hardware composition of another electronic device provided in an embodiment of the present application;

[0056] Fig.12 A schematic diagram of a communication device provided in an embodiment of the present application;

[0057] Fig.13 A schematic diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0058] The terms "first", "second", "third", etc. in the specification, claims and drawings of this application are used to distinguish different objects rather than to limit a specific order.

[0059] In the embodiments of the present 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 the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0060] 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, and new communication systems that will emerge in future communication developments.

[0061] The communication system includes a first device and a second device. The first device may be a device on the network side for providing network communication functions, which is also called a network device or a network element in some cases. The network device may 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 may 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 may be a device for accessing the network, which may generally be a terminal device. See Figure 1 , this figure 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 The system includes a base station 1 and a terminal 2.

[0062] In the embodiments provided in the present application, the base station may be any device having a wireless transceiver function, 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 / transmission reception 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 may be: a macro base station, a micro base station, a micro-micro base station, a small station, a relay station, or a balloon station, etc. The base station may include one or more co-site or non-co-site transmission points (Transmission Reception Point, TRP). The base station may 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 may 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 an LTE network, and can also communicate with a base station supporting a 5G network. The terminal can also establish dual connections with a base station supporting an LTE network and a base station supporting a 5G network.

[0063] In the embodiments provided in the present application, the terminal may be in various forms, for example, 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 smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a wearable terminal device, etc. The terminal may also be sometimes referred to as a terminal device, a user equipment (UE), an access terminal device, a vehicle-mounted terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal device, a mobile device, a UE terminal device, a terminal device, a wireless communication device, a UE agent or a UE device, etc. The terminal may also be a fixed terminal or a mobile terminal.

[0064] As mentioned above, in order to reduce interference during communication, for the physical downlink shared channel PDSCH, the communication protocol by default allows the user equipment UE to adopt advanced signal processing technology or algorithms to improve the ability to suppress interference signals by achieving signal equalization, thereby improving the signal reception quality and communication performance.

[0065] Currently, UE can use the linear minimum mean square error (LMMSE) algorithm, the 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.

[0066] Specifically, the LMMSE algorithm means that the UE constructs an equalization matrix based on channel estimation and noise estimation, and the equalization matrix can reflect the channel state and noise conditions during signal transmission. Based on the equalization matrix, the LMMSE algorithm can improve the transmission performance of the signal.

[0067] The E-LMMSE-IRC algorithm means that the UE constructs an equalization matrix based on channel estimation and interference noise estimation. The 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 the transmission performance of the signal. Based on the LMMSE algorithm, the LMMSE-IRC algorithm uses interference suppression combination technology to improve the signal-to-noise ratio of the signal by suppressing interference, thereby reducing the bit error rate and improving the performance of the communication system. Therefore, compared with the LMMSE algorithm, the LMMSE-IRC algorithm is more suitable for communication environments with a lot of interference and noise, and can better improve the signal reception quality and the performance of the communication system.

[0068] The 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 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.

[0069] In MU-MIMO scenarios, multiple users use the same spectrum resources to communicate at the same time, which can cause serious interference and conflicts. Traditional LMMSE-IRC algorithms or LMMSE algorithms may encounter performance bottlenecks when dealing with such multi-user interference. The E-LMMSE-IRC algorithm, by introducing a nonlinear mapping function, can better handle the multi-user interference problem and improve the signal reception quality and the performance of the communication system.

[0070] However, the complexity of the above E-LMMSE-IRC algorithm is relatively high, which will increase the processing power consumption of the UE accordingly. In addition, the E-LMMSE-IRC algorithm is only applicable to MU-MIMO scenarios. If the UE is in a single-user (Single-User Multiple-InputMultiple-Output, SU-MIMO) scenario, the communication performance of the PDSCH will decrease when the processing power consumption of the UE increases.

[0071] 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 receiving algorithm corresponding to the indication information. Thus, when there is a co-scheduled user equipment, the terminal device can receive and process the PDSCH more effectively 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, the signal quality can be improved and the reliability of communication can be improved.

[0072] 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.

[0073] See also 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 may be a network device such as a base station, and the terminal device 22 may be a terminal device such as a mobile phone or a computer.

[0074] S201: The network device sends indication information to the terminal device, where the indication information indicates whether there is a co-scheduled user equipment.

[0075] 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.

[0076] In some specific implementations, the indication information may be indicated by 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. Among them, RRC is a technology that manages, controls and schedules wireless resources through certain strategies and means, aiming to make full use of limited wireless network resources as much as possible while meeting the requirements of service quality, ensuring that the planned coverage area is reached, and improving service capacity and resource utilization as much as possible.

[0077] In some examples, when it is decided not to use MU-MIMO scheduling for a long time due to a small number of antennas deployed in the cell, the network device 21 can 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. The indication information at this time is information indicating that there is no co-scheduled user equipment.

[0078] Specifically, the reason why MU-MIMO scheduling is not used when the number of antennas deployed in the cell is small is that MU-MIMO technology uses multiple antennas to simultaneously transmit multiple independent data streams, thereby achieving higher system capacity and spectrum efficiency. When the number of antennas deployed in the cell is small, the multi-antenna gain cannot be fully utilized, so scheduling the data streams of multiple users for transmission is unlikely to bring significant performance improvements. In addition, when the number of antennas is small, the signal processing and algorithm complexity required to implement MU-MIMO may increase significantly. This may lead to a decrease in the stability and reliability of the communication system in actual operation.

[0079] Specifically, the method for the network device 21 to determine whether the number of antennas deployed in the cell is small may include the following two methods: the first is to directly determine whether the number of antennas in the cell corresponding to the network device is lower than the first number threshold. If so, it can be determined that there are fewer antennas deployed in the cell. The second method is to use the monitoring and measurement function of the network device 21 to detect one or more of the flow, signal quality, signal strength and signal coverage range of the cell. If the difference between the expected data and the actual data measured by the monitoring is greater than the first difference threshold, it can be determined that there are fewer antennas deployed in the cell. It should be noted that this application does not limit the specific judgment method.

[0080] In other examples, when it is decided not to use MU-MIMO scheduling for a long time due to a relatively low load of the cell, the network device 21 can also send indication information to the terminal device 22 by broadcasting a message or RRC configuration, thereby helping the terminal device 22 to understand the current scheduling strategy and resource allocation. The indication information at this time is information indicating that there is no co-scheduled user equipment.

[0081] Specifically, the reason why MU-MIMO scheduling is not used 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 utilized. At this time, if MU-MIMO scheduling is adopted, it may cause a waste of spectrum resources. Therefore, when the network equipment load is low, not using multi-user MU-MIMO scheduling for a long time can reduce the complexity and computing overhead of network equipment and improve the efficiency and stability of network equipment.

[0082] Specifically, the method for the network device 21 to determine whether the load of the cell is low may include the following two methods: the first method is to 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 load of the cell is low. The second method is that the network device 21 detects through the traffic load of the cell. The network device 21 can monitor the traffic load of the cell, including uplink and downlink traffic. If the cell traffic load is low, the network device 21 can deem that the load of the cell is relatively low. It should be noted that this application does not limit the specific judgment method.

[0083] The indication information sent through broadcast messages or RRC configuration is more explicit, and the terminal device 22 can clearly receive the indication information indicating whether there is a co-scheduled user equipment, which helps the terminal device 22 avoid confusion or uncertainty. In addition, the network device 21 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 higher.

[0084] In some other specific implementations, the indication information may also be indicated by downlink control information (DCI). That is, the network device 21 sends a DCI indication to the terminal device 22, thereby sending the indication information to the terminal device 22. Among them, DCI is used to indicate downlink control information, including a combination of time domain, frequency domain and modulation scheme. Once the DCI is formed, it will enter the channel coding and be transmitted through the PDCCH.

[0085] 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. Exemplarily, 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, with the advancement of technology and the increase in demand, 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.

[0086] 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 to 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.

[0087] Specifically, removing existing entries means that the network device 21 deletes existing entries in the antenna port field to make system adjustments, replace antennas, or optimize transmission performance. By removing unnecessary entries, the overhead of control information can be reduced and the resource utilization of the communication system can be optimized. Adding new entries means that the network device 21 adds new entries in the antenna port field to indicate the indication information, which helps to better manage the transmission of downlink signals and improve the performance of the communication system.

[0088] See also Figure 3 , which is a schematic diagram of an antenna port field provided by an embodiment of the present application. Figure 3 It can be seen that an entry may include Value, Number of DMRS CDM group(s)without data and DMRSport(s).

[0089] Wherein, Value represents the serial number of this entry, and each entry has a uniquely determined Value corresponding to it. In some examples, when the DCI indication sent by the network device 21 to the terminal device 22 includes Value=1, the indication information can be sent according to the Number of DMRS CDM group(s)without data and DMRSport(s) corresponding to Value=1.

[0090] 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. Among them, 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 the received data can be correctly demodulated. CDM is a multiplexing method that uses different codes to distinguish the original signals from each channel. 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.

[0091] DMRSport(s) represents the identifier of the DMRS port 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 usually 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.

[0092] Depend on Figure 3 It can be seen that 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. In other words, 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 the indication information, then the indication information usually indicates that there are 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.

[0093] In some specific implementations, 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 indication information to the terminal device 22 through the new entries added to the antenna port field in the DCI.

[0094] See also Figure 4A , which is a schematic diagram of another antenna port field provided in an embodiment of the present application. Figure 4B , which is a schematic diagram of the third antenna port field provided in an embodiment of the present application. Figure 4A and Figure 4B The antenna port fields are used to configure DMRS configuration type 1 and DMRS configuration type 2 respectively, and the DMRS symbol data are all 1. Figure 4A In the example, the entries corresponding to Value=12-14 are the newly added entries. Figure 4B In the example, the entries corresponding to Value=25-31 are the newly added entries.

[0095] See also 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, which are mapped to 2 CDM groups. 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, which are mapped to 2 CDMgroups. It can be seen that the main difference between DMRS configuration type 1 and DMRS configuration type 2 lies in the configuration mode of frequency domain resources and the number of antenna ports supported. On the one hand, the difference in the configuration mode 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. On the other hand, the difference in the number of supported antenna ports is that for each symbol of 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 up to 4 and 8 antenna ports in single symbol and double symbol cases, respectively. DMRS configuration type 2 supports up to 6 and 12 antenna ports in single-symbol and dual-symbol cases, respectively.

[0096] It should be noted that Figure 3 , Figure 4A and Figure 4B The entries in are only examples, and the above entries may be some entries selected from existing entries, or may be new entries configured by RRC. This application does not limit the specific entries.

[0097] In other specific implementations, when the network device 21 is configured with two transport blocks (TransportBlock, TB), joint indication can be performed through the antenna port field in the DCI and one of the modulation and coding scheme (Modulation and CodingScheme, MCS), new data indicator (New Data Indicator, NDI), and redundancy version (Redundancy Version, RV).

[0098] Among them, the MCS in DCI is used to indicate the modulation scheme and coding scheme. The modulation scheme defines the waveform and phase of the signal so that it can effectively resist interference and noise when transmitted in the channel. The coding scheme defines the redundancy and verification mechanism of the data during transmission to improve the reliability and error correction capability of the data. Therefore, MCS is used to optimize the transmission performance of the signal.

[0099] NDI is an identifier used to identify new data in a transport block. In communication systems, especially systems like LTE, NDI is used to distinguish new data from retransmitted data in the same transport block. During data transmission, in order to improve reliability, data may need to be retransmitted. In order to distinguish new data from retransmitted data, NDI is introduced into the transport block. When the data in the transport block is marked as new data, the corresponding NDI is set to a specific value; when the data is marked as retransmitted, NDI is set to another specific value. By using NDI, the receiver can distinguish between new data and retransmitted data and process it accordingly as needed. This is critical to ensure correct decoding of data and avoid repeated processing of retransmitted data.

[0100] RV is used to indicate the redundancy version and is used in error correction mechanisms such as HARQ, which helps to increase the fault tolerance of the communication system and ensure the reliability of data transmission.

[0101] The indication of indication information by the above method 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 been transmitted in the DCI, and the additional signal transmission and parsing process can be avoided by reusing the field, 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.

[0102] Specifically, when the DMRS configuration type is 1 and the maximum number of DMRS symbols is 2, or, the DMRS configuration type is 2 and the maximum number of DMRS symbols is 1, or, the DMRS configuration type is 2 and the maximum number of DMRS symbols is 2, the indication information may be sent in the above-mentioned joint indication manner.

[0103] See also Figure 6 , which is a schematic diagram of the fourth antenna port field provided by the 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 is transmitting normally. Figure 6It can be seen that the entry corresponding to Value=2-25 when TwoCodeword is the newly added entry. It should be noted that the newly added entry is usually characterized as the current PDSCH adopting MU-MIMO. In other words, if Antenna port 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.

[0104] 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.

[0105] See also Fig. 7A , which is a schematic diagram of the fifth antenna port field provided in an embodiment of the present application. Figure 7B , which is a schematic diagram of the sixth antenna port field provided in an embodiment of the present application. Figure 7C , which is a schematic diagram of the seventh antenna port field provided in the embodiment of the present application. Fig.7D , Fig.7D yes Figure 7C The subsequent schematic diagram of Fig. 7A Antenna port field when DMRS configuration type 1 and the maximum number of DMRS symbols is 2, Figure 7B Antenna port field when DMRS configuration type 2 and the maximum number of DMRS symbols is 1, Figure 7C and Fig.7D Antenna port field when DMRS configuration type is 2 and the maximum number of DMRS symbols is 2. Fig. 7A In the example, the entry corresponding to Value=4-30 in Two Codeword is the newly added entry. Figure 7B In the example, the entry corresponding to Value=2-22 in Two Codeword is the newly added entry. Figure 7C and Fig.7D In the example, the entry corresponding to Value=6-60 in Two Codeword is the newly added entry.

[0106] It should be noted that Figure 6 , Fig. 7A , Figure 7B and Figure 7C and Fig.7D The entries in are only examples, and the above entries may be some entries selected from existing entries, or may be new entries configured by RRC. This application does not limit the specific entries.

[0107] Specifically, if some entries are selected from existing entries, then the entries indicated during One Codeword can be reused. If it is a brand new entry 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 entry added to the antenna port field in the DCI.

[0108] 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.

[0109] 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.

[0110] 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 through the influence of the channel and noise. Specifically, this relationship can be reflected by the following formula (1):

[0111] (1)

[0112] in, is the estimation of the transmitted signal, W is the equalization matrix, and y is the received signal vector. Specifically, the estimation of the transmitted signal refers to the original transmitted signal that is expected to be recovered from the received signal. The equalization matrix represents various noises and interferences introduced during the receiving process. The received signal vector refers to the signal received by the terminal device 22.

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

[0114] (2)

[0115] 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.

[0116] In some examples, the correlation matrix R of the LMMSE algorithm can be expressed by the following formula (3):

[0117] (3)

[0118] Where R is the correlation matrix, is the channel estimation matrix of the desired signal, is the noise variance, I is the identity matrix, and its size is the same as the number of columns of the channel estimation matrix.

[0119] In other examples, the correlation matrix R of the LMMSE-IRC algorithm can be expressed by the following formula (4):

[0120] (4)

[0121] Where R is the correlation matrix, is the channel estimation matrix of the desired signal, is the interference signal estimated on DMRS, For DMRS receiving signal, is the modulation symbol of the desired DMRS, N is the vector The number of elements in , H is the conjugate transpose operation.

[0122] 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.

[0123] 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.

[0124] In some examples, the correlation matrix of the E-LMMSE-IRC algorithm can be expressed by the following formula (5):

[0125] (5)

[0126] 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 DMRS, r is the DMRS received signal, d 0 is the modulation symbol of the desired DMRS, d 1 The modulation symbol of the main interference source DMRS, N is the vector The number of elements in , H is the conjugate transpose operation.

[0127] In summary, an embodiment of the present application provides a communication system, which includes a network device and a terminal device. When there is a co-scheduled user equipment, PDSCH is received according to the E-LMMSE-IRC algorithm, and when there is no co-scheduled user equipment, 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.

[0128] See also 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:

[0129] S801: Detect whether there is a co-scheduled user equipment among the terminal devices communicating with the network device.

[0130] 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 combined E-LMMSE-IRC algorithm.

[0131] 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 combined LMMSE-IRC algorithm.

[0132] See also Fig. 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:

[0133] S901: If first indication information sent by a network device is received, PDSCH is received according to an E-LMMSE-IRC algorithm, and the first indication information indicates that there is a co-scheduled user equipment.

[0134] S902: 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 that there is no co-scheduled user equipment.

[0135] It should be noted that the above communication method is similar to the static effect of the above communication system, which will not be repeated here.

[0136] 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 an embodiment.

[0137] See also Fig.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 may be a first device, including but not limited to a base station and a core network unit. Fig.10 A simplified schematic diagram of the base station structure is shown. 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 operation 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 to baseband signals; Part 430 can usually be called a transceiver module, a transceiver, a transceiver circuit, or a transceiver. 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. Optionally, the device used to implement the receiving function in part 430 can be regarded as a receiver, and the device used to implement the sending function can be regarded as a transmitter, that is, part 430 includes a receiver 432 and a transmitter 431. A receiver may also be called a receiving module, a receiver, or a receiving circuit, etc., and a transmitter may be called a transmitting module, a transmitter, or a transmitting circuit, etc.

[0138] Part 410 and part 420 may include one or more single boards, each of which may include one or more processors and one or more memories. The processor is used to read and execute the program in the memory to realize the baseband processing function and the control of the base station. If there are multiple single boards, each single board can be interconnected to enhance the processing capability. As an optional implementation, multiple single boards may share one or more processors, or multiple single boards may share one or more memories, or multiple single boards may share one or more processors at the same time.

[0139] For example, in one implementation, the transceiver module of part 430 is used to execute the transceiver-related process executed by the base station (first device) in the aforementioned method embodiment. The processor of part 410 is used to execute the processing-related process executed by the base station in the aforementioned method embodiment.

[0140] It should be understood that Fig.10 This is only an example and not a limitation. The network device including the processor, memory and transceiver may not rely on Fig.10 The structure shown.

[0141] See also Fig.11, which is a schematic diagram of the hardware composition of another electronic device provided in an embodiment of the present application. The electronic device may be a second device, and the second device may be a terminal device, including but not limited to mobile phones, smart wearable devices (such as smart watches) and other electronic devices. 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.

[0142] It is to 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 in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0143] 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 processor (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), etc. Different processing units may be independent devices or integrated into one or more processors.

[0144] It is understandable 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.

[0145] 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 through the external memory interface 520 to implement a data storage function. For example, files such as music and videos can be stored in the external memory card.

[0146] The internal memory 521 can be used to store computer executable program codes, and the executable program codes include 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 may 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 may 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 (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.

[0147] 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.

[0148] Antenna 1 and antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in the electronic device can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve the utilization of the antennas. For example, antenna 1 can be reused as a diversity antenna for a wireless local area network. In some other embodiments, the antenna can be used in combination with a tuning switch.

[0149] 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.

[0150] In some embodiments, the electronic device initiates or receives a call request through the mobile communication module 530 and the antenna 1 .

[0151] In addition, an operating system is running on the above components. For example, an iOS operating system, an Android operating system, a Windows operating system, etc. Applications can be installed and run on the operating system. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the explanation and beneficial effects of the relevant contents in any of the electronic devices provided above can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0152] See also Fig.12 , which is a schematic diagram of a communication device provided in an embodiment of the present application. The communication device 1200 is applied to a network device, and the communication device 1200 includes: a sending module 1201; the sending module 1201 is used to send indication information to a terminal device, and the indication information indicates whether there is a co-scheduled user equipment, so that the terminal device receives a physical downlink shared channel PDSCH according to a receiving algorithm corresponding to the indication information.

[0153] Therefore, when there are co-scheduled user equipment, the terminal equipment can receive and process PDSCH more effectively according to the corresponding receiving algorithm, which helps to reduce resource waste and improve the resource utilization of the entire communication system. In addition, by reducing noise interference during communication through a suitable receiving algorithm, it can also improve signal quality and communication reliability.

[0154] See also Fig.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;

[0155] The first receiving module 1301 is used 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 used to receive PDSCH according to a receiving algorithm corresponding to the indication information.

[0156] Therefore, when there are co-scheduled user equipment, the terminal equipment can receive and process PDSCH more effectively according to the corresponding receiving algorithm, which helps to reduce resource waste and improve the resource utilization of the entire communication system. In addition, by reducing noise interference during communication through a suitable receiving algorithm, it can also improve signal quality and communication reliability.

[0157] Those skilled in the art can 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.

[0158] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication method, characterized in that: Applied to a network device, the method comprises: Detecting the existence 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 combined E-LMMSE-IRC algorithm; Detecting that there is no co-scheduled user equipment in the terminal device communicating with the network device; Sending second indication information to the terminal device, wherein the second indication information indicates that there is no co-scheduled user equipment, so that the terminal device receives PDSCH according to a linear minimum mean square error LMMSE algorithm or a minimum mean square error-interference suppression combined LMMSE-IRC algorithm.

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

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, comprises: When the network device is configured with two transmission 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 configures two transport blocks TB, sending a DCI indication to the terminal device includes: When the network device satisfies one of the following three 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 entries 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 a 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, and the method includes: 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, and 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, wherein the broadcast message and / or RRC configuration includes second indication information.

15. The method according to claim 13, characterized in that The receiving 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, wherein 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, wherein 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 three conditions: the 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, 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.

21. The method according to claim 18, 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 entries in the antenna port field, the DCI indication indicates the second indication information.

22. The method according to claim 18, 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.

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 comprises: 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 comprises a terminal device and the network device, wherein 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, it is used to implement the method according to any one of claims 1 to 23.

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