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

Communication system, method, and related device

[0001] This application claims priority from the Chinese patent application No. 202410265326.0 filed on March 08, 2024, and entitled "Communication system, method, and related device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

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

[0003] In a communication system, interference refers to some stray electric waves that hinder signal reception when receiving radio signals. The sources of these interferences can be other radio equipment, lightning, industrial noise, etc. Interference can have a negative impact on the performance of the communication system, such as reducing signal quality, increasing bit error rate, affecting user experience, etc. In order to reduce interference during communication, for the physical downlink shared channel (PDSCH), the communication protocol allows the user equipment (UE) to adopt advanced signal processing techniques or algorithms by default to improve the suppression ability of interference through signal equalization, thereby improving the transmission performance of the signal.

[0004] In the related art, the UE can adopt an extended linear minimum mean square error-interference rejection combining (E-LMMSE-IRC) algorithm to construct an equalization matrix from 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. And based on the equalization matrix, the E-LMMSE-IRC algorithm can achieve signal equalization, thereby reducing multipath interference and spectral leakage during communication to improve the transmission performance of the signal.

[0005] However, the complexity of the above-mentioned E-LMMSE-IRC algorithm is high, which increases the processing power consumption of the UE. Moreover, the E-LMMSE-IRC algorithm is only applicable to the multi-user (MU-MIMO) scenario. If the UE is in the single-user (SU-MIMO) scenario, the communication performance of the PDSCH will decrease while the processing power consumption of the UE increases. SUMMARY

[0006] The application aims to provide a communication system, a method and related devices, which can improve the communication performance of a PDSCH.

[0007] In a first aspect, the application provides a communication method applied to a network device, which 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 more effectively receive and process the PDSCH according to the corresponding receiving algorithm, which helps to reduce resource waste and improve the resource utilization of the entire communication system. Moreover, reducing the noise interference during communication through a suitable receiving algorithm can also improve the signal quality and the reliability of communication.

[0008] In some specific implementation manners, the sending of the indication information to the 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, includes: sending first indication information to the terminal device, the first indication information indicating that there is a co-scheduled user device, so that the terminal device receives the PDSCH according to an extended linear minimum mean square error-interference rejection combining (E-LMMSE-IRC) algorithm; or, sending second indication information to the terminal device, the second indication information indicating that there is no co-scheduled user device, so that the terminal device receives the PDSCH according to a linear minimum mean square error (LMMSE) algorithm or a minimum mean square error-interference rejection combining (LMMSE-IRC) algorithm.

[0009] In some specific implementation manners, it is detected whether there is a co-scheduled user device for a terminal device in communication with the network device; if yes, first indication information is sent to the terminal device, so that the terminal device receives a physical downlink shared channel (PDSCH) according to an extended linear minimum mean square error-interference rejection combining (E-LMMSE-IRC) algorithm; if no, second indication information is sent to the terminal device, so that the terminal device receives the PDSCH according to a linear minimum mean square error (LMMSE) algorithm or a minimum mean square error-interference rejection combining (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 the resource utilization of the communication system. Moreover, reducing the noise interference during communication through a suitable receiving algorithm can improve the signal quality and the reliability of communication.

[0010] In some specific implementation manners, the sending, to the terminal device, of the second indication information comprises: sending, to the terminal device, a broadcast message and / or a radio resource control (RRC) configuration, and the second indication information is included in the broadcast message and / or the RRC configuration. In this way, the explicitness of sending the indication information through the broadcast message or the RRC configuration is relatively strong, and the terminal device can explicitly receive the indication information representing whether there is a co-scheduled user equipment, which helps the terminal device to avoid confusion or uncertainty. Moreover, the network device can quickly and dynamically adjust the indication information to adapt to different situations and requirements, so that the flexibility and efficiency of sending the indication information are also relatively high.

[0011] In some specific implementation manners, the sending, to the terminal device, of the broadcast message and / or the RRC configuration comprises: if the number of antennas in a 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, to the terminal device, the broadcast message and / or the RRC configuration. In this way, the explicitness of sending the indication information through the broadcast message or the RRC configuration is relatively strong, and the terminal device can explicitly receive the indication information representing whether there is a co-scheduled user equipment, which helps the terminal device to avoid confusion or uncertainty. Moreover, the network device can quickly and dynamically adjust the indication information to adapt to different situations and requirements, so that the flexibility and efficiency of sending the indication information are also relatively high.

[0012] In some specific implementation manners, the sending, to the terminal device, of the first indication information comprises: sending, to the terminal device, a downlink control information (DCI) indication, and the first indication information is included in the DCI indication.

[0013] In some specific implementation manners, the sending, to the terminal device, of the DCI indication comprising the first indication information comprises: sending, to the terminal device, the DCI indication, and a field of target bits is included in the DCI indication, and the first indication information is included in the field of target bits. In this way, more information and control capability can be provided without increasing the DCI overhead, so as to better meet the requirements of the communication system. Moreover, with the progress of technology and the increase of requirements, this 1-bit field can be easily extended or modified to adapt to new requirements.

[0014] In some specific implementation manners, the sending, to the terminal device, of the DCI indication comprising the first indication information comprises: sending, to the terminal device, the DCI indication, and a newly-added entry of an antenna port is included in the DCI indication, and the first indication information is represented by the newly-added entry of the antenna port. In this way, the network device can use an entry in an antenna port field in the DCI as the indication information and indicate it to the terminal device, so as to help the terminal device to understand the current scheduling strategy and resource allocation situation.

[0015] In some specific implementation manners, the sending, to the terminal device, of the first indication information or the sending, to the terminal device, of the second indication information comprises: when the network device configures two transport blocks (TBs), sending, to the terminal device, a DCI indication, the DCI indication comprising 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 the one or more of the MCS, the NDI, and the RV jointly representing the first indication information or the second indication information. The method has the following advantages: first, the reuse of the antenna port field in the DCI and the one or more of the MCS, the NDI, and the RV for indication can reduce additional signaling overhead. This is because the information is already transmitted in the DCI, and the reuse of the field can avoid additional signal transmission and analysis processes, thereby improving communication efficiency. Second, the joint indication manner can maintain the maximum degree of freedom of the DMRS port indication. Since the correspondence between the DMRS port and the antenna is very important for demodulation, the maintenance of the maximum degree of freedom can better support multiple antenna configurations and multiplexing schemes, thereby improving the flexibility of the communication system.

[0016] In some specific implementation manners, when the network device configures two transport blocks (TBs), the sending, to the terminal device, of the DCI indication comprises: when the network device satisfies one of the following conditions, sending, to the terminal device, the DCI indication: a first demodulation reference signal (DMRS) configuration type and a maximum number of DMRS symbols being 2, or a second DMRS configuration type and a maximum number of DMRS symbols being 1, or a second DMRS configuration type and a maximum number of DMRS symbols being 2.

[0017] In some specific implementation manners, the DCI indication comprises 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 the one or more of the MCS, the NDI, and the RV jointly representing the first indication information or the second indication information, which comprises: if MCSs of the two TBs are not equal to a first target value or RVs of the two TBs are not equal to a second target value, and a new entry of the antenna port field is included in the DCI indication, the DCI indication represents the first indication information.

[0018] In some specific implementation manners, 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 the one or more of the MCS, the NDI, and the RV jointly representing the first indication information or the second indication information, and the DCI indication represents the second indication information when the DCI indication represents that the MCS of one TB is equal to the first target value and the RV of one TB is equal to the second target value.

[0019] In some specific implementation manners, 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 the one or more of the MCS, the NDI, and the RV jointly representing the first indication information or the second indication information, and the DCI indication represents the second indication information when the DCI indication represents that the MCS of one TB is equal to the first target value and the RV of one TB is equal to the second target value.

[0020] In some specific implementation manners, the new entry is activated by a medium access control-control element (MAC-CE).

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

[0022] In some specific implementation manners, if first indication information sent by the network device is received, the PDSCH is received according to an E-LMMSE-IRC algorithm, the first indication information representing that there is a co-scheduled user device; and if second indication information sent by the network device is received, the PDSCH is received according to an LMMSE algorithm or an LMMSE-IRC algorithm, the second indication information representing that there is no 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 the resource utilization of the communication system. Moreover, reducing noise interference during communication through a suitable receiving algorithm can improve signal quality and communication reliability.

[0023] In some specific implementation manners, the receiving the second indication information sent by the network device comprises: receiving a broadcast message and / or RRC configuration sent by the network device, and the second indication information is included in the broadcast message and / or RRC configuration. In this way, the explicitness of sending the indication information through the broadcast message or the RRC configuration is higher, and the terminal device can explicitly receive the indication information representing whether there is a co-scheduled user equipment, which helps the terminal device to avoid confusion or uncertainty. Moreover, 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.

[0024] In some specific implementation manners, the receiving the first indication information sent by the network device comprises: receiving a DCI indication sent by the network device, and the first indication information is included in the DCI indication.

[0025] In some specific implementation manners, the receiving the DCI indication sent by the network device, and the first indication information is included in the DCI indication comprises: receiving a DCI indication sent by the network device, and a target bit field is included in the DCI indication, and the first indication information is included in the target bit field. In this way, more information and control capability can be provided without increasing the DCI overhead, so as to better meet the needs of the communication system. Moreover, with the progress of technology and the increase of needs, this 1-bit field can be easily extended or modified to adapt to new needs.

[0026] In some specific implementation manners, the receiving the DCI indication sent by the network device, and the first indication information is included in the DCI indication comprises: receiving a DCI indication sent by the network device, and a new entry of an antenna port is included in the DCI indication, and the first indication information is represented by the new entry of the antenna port. In this way, the network device can use the entry in the antenna port field in the DCI as the indication information to indicate to the terminal device, so as to help the terminal device to understand the current scheduling strategy and resource allocation situation.

[0027] In some specific implementation manners, the receiving the first indication information sent by the network device or the receiving the second indication information sent by the network device comprises: when the network device configures two TBs, receiving DCI indication sent by the network device, the DCI indication comprising 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), and the antenna port field and the one or more of the MCS, the NDI and the RV jointly representing the first indication information or the second indication information. The method has the following advantages: first, the reuse of the antenna port field in the DCI and one or more of the MCS, the NDI and the RV for indication can reduce additional signaling overhead. This is because the information has been transmitted in the DCI, and by multiplexing the field, additional signal transmission and analysis process can be avoided, thereby improving the communication efficiency. Second, the joint indication manner can maintain the maximum degree of freedom of the DMRS port indication. Since the correspondence between the DMRS port and the antenna is very important for demodulation, by maintaining the maximum degree of freedom, the multi-antenna configuration and multiplexing scheme can be better supported, thereby improving the flexibility of the communication system.

[0028] In some specific implementation manners, when the network device configures two TBs, the receiving the DCI indication sent by the network device comprises: when the network device satisfies one of the following conditions: a first DMRS configuration type and a maximum number of DMRS symbols being 2, or a second DMRS configuration type and a maximum number of DMRS symbols being 1, or a second DMRS configuration type and a maximum number of DMRS symbols being 2, receiving the DCI indication sent by the network device.

[0029] In some specific implementation manners, the DCI indication comprises 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), and the antenna port field and the one or more of the MCS, the NDI and the RV jointly representing the first indication information or the second indication information, which comprises: if the MCSs of the two TBs indicated by the DCI indication are not equal to a first target value or the RVs of the two TBs indicated by the DCI indication are not equal to a second target value, and the DCI indication comprises a newly added entry of the antenna port field, the DCI indication represents the first indication information.

[0030] In some specific implementation manners, 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 the one or more of the MCS, the NDI, and the RV jointly representing 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 a first target value or the RV of the two TBs is not equal to a second target value, and the DCI indication includes an entry of the antenna port field other than a newly-added entry, the DCI indication represents the second indication information.

[0031] In some specific implementation manners, 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 the one or more of the MCS, the NDI, and the RV jointly representing the first indication information or the second indication information, including: if the DCI indication represents that the MCS of the one TB is equal to the first target value and the RV of the one TB is equal to the second target value, the DCI indication represents the second indication information.

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

[0033] In a third aspect, the present application provides a network device, including: a memory, configured to store a computer program or computer instructions; and a processor, configured to execute the computer program or computer instructions stored in the memory, so that the network device executes the method in the first aspect.

[0034] In a fourth aspect, the present application provides a terminal device, including: a memory, configured to store a computer program or computer instructions; and a processor, configured to execute the computer program or computer instructions stored in the memory, so that the terminal device executes the method in the second aspect.

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

[0036] In a sixth aspect, the present application provides a computer storage medium, configured to store a computer program, the computer program is executed to implement the method in the first aspect and the second aspect.

[0037] In a seventh aspect, the present application provides a communication device, which is applied to a network device, and the communication device comprises a sending module. The sending module is configured to send 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 more effectively receive and process the PDSCH according to the corresponding receiving algorithm, which helps to reduce resource waste and improve the resource utilization of the whole communication system. Moreover, the noise interference during communication is reduced through the appropriate receiving algorithm, which can also improve the signal quality and the reliability of communication.

[0038] In an eighth aspect, the present application provides a communication device, which is applied to a terminal device, and the communication device comprises a first receiving module and a second receiving module. The first receiving module is configured to receive indication information sent by a network device, the indication information indicating whether there is a co-scheduled user equipment. The second receiving module is configured to receive a PDSCH according to a receiving algorithm corresponding to the indication information. Thus, when there is a co-scheduled user equipment, the terminal device can more effectively receive and process the PDSCH according to the corresponding receiving algorithm, which helps to reduce resource waste and improve the resource utilization of the whole communication system. Moreover, the noise interference during communication is reduced through the appropriate receiving algorithm, which can also improve the signal quality and the reliability of communication.

[0039] Based on the above technical solutions, the present application has the following beneficial effects:

[0040] The present application provides a communication system, method and related device, and the method comprises the following steps: 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 more effectively receive and process the PDSCH according to the corresponding receiving algorithm, which helps to reduce resource waste and improve the resource utilization of the whole communication system. Moreover, the noise interference during communication is reduced through the appropriate receiving algorithm, which can also improve the signal quality and the reliability of communication. BRIEF DESCRIPTION OF DRAWINGS

[0041] FIG. 1 is a scene diagram of a base station and terminal communication provided by an embodiment of the present application;

[0042] FIG. 2 is a signaling diagram of a communication method provided by an embodiment of the present application;

[0043] FIG. 3 is a schematic diagram of an antenna port field provided by an embodiment of the present application;

[0044] FIG. 4A is a schematic diagram of another antenna port field provided by an embodiment of the present application;

[0045] FIG. 4B is a schematic diagram of a third antenna port field according to an embodiment of the present application;

[0046] FIG. 5A is a schematic diagram of a DMRS configuration type 1 according to an embodiment of the present application;

[0047] FIG. 5B is a schematic diagram of a DMRS configuration type 2 according to an embodiment of the present application;

[0048] FIG. 6 is a schematic diagram of a fourth antenna port field according to an embodiment of the present application;

[0049] FIG. 7A is a schematic diagram of a fifth antenna port field according to an embodiment of the present application;

[0050] FIG. 7B is a schematic diagram of a sixth antenna port field according to an embodiment of the present application;

[0051] FIG. 7C is a schematic diagram of a seventh antenna port field according to an embodiment of the present application;

[0052] FIG. 7D is a subsequent schematic diagram of FIG. 7C;

[0053] FIG. 8 is a schematic diagram of a communication method according to an embodiment of the present application;

[0054] FIG. 9 is a schematic diagram of another communication method according to an embodiment of the present application;

[0055] FIG. 10 is a schematic diagram of a hardware composition of an electronic device according to an embodiment of the present application;

[0056] FIG. 11 is a schematic diagram of a hardware composition of another electronic device according to an embodiment of the present application;

[0057] FIG. 12 is a schematic diagram of a communication apparatus according to an embodiment of the present application;

[0058] FIG. 13 is a schematic diagram of another communication apparatus according to an embodiment of the present application. DETAILED DESCRIPTION

[0059] The terms “first”, “second”, and “third” and the like in the description and in the claims of the present application and the accompanying drawings are used to distinguish between similar objects, not to imply a specific order.

[0060] In the embodiments of the present application, the words “exemplary” and “for example” are used to mean serving as an example, instance, or illustration. Any implementation or design solution described as “exemplary” or “for example” in the embodiments of the present application should not be construed as being preferred or advantageous over other implementations or design solutions. Rather, the use of the words “exemplary” and “for example” is intended to present concepts in a concrete manner.

[0061] Embodiments of the present application are applied to a communication system. The communication system can 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 a new communication system in future communication development, etc.

[0062] The communication system includes a first device and a second device. The first device can be a device for providing network communication function on the network side, also known as network device or network element in some cases. The network device can be a base station (including a functional unit of the base station or a combination of functional units of the base station) or a core network unit in general. 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 accessing the network, which can be a terminal device in general. Referring to FIG. 1, which is an example diagram of a scenario of communication between a base station and a terminal provided by an embodiment of the present application. FIG. 1 includes a base station 1 and a terminal 2.

[0063] In the embodiments provided in the present application, the base station can be any kind of device with wireless transceiving function, including but not limited to: an evolved Node B (eNB or e-NodeB) in long term evolution (LTE), a base station (gNodeB or gNB) or transmission receiving point (TRP) in new radio (NR), a base station in 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 micro station, a relay station, or a balloon station, etc. The base station can include one or more co-sited or non-co-sited transmission points (TRPs). The base station can also be a radio controller in a cloud radio access network (CRAN) scenario, a centralized unit (CU), and / or a distributed unit (DU). The base station can communicate with the terminal, or communicate with the terminal through the 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, and can also communicate with a base station supporting an LTE network and a base station supporting a 5G network in dual connectivity.

[0064] In the embodiments provided in the present application, the terminal can be various forms, for example, a mobile phone, a tablet computer, a computer with wireless transceiving 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 treatment, 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, and the like. The terminal can also be 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 apparatus, and the like. The terminal can also be a fixed terminal or a mobile terminal.

[0065] As described above, in order to reduce interference during communication, for a physical downlink shared channel (PDSCH), a communication protocol allows a user equipment (UE) to use an advanced signal processing technique or algorithm to improve the ability to suppress interference signals by implementing signal equalization, thereby improving the reception quality of signals and communication performance.

[0066] Currently, the UE can use a linear minimum mean square error (LMMSE) algorithm, a linear minimum mean square error-interference rejection combining (LMMSE-IRC) algorithm, and an extended linear minimum mean square error-interference rejection combining (E-LMMSE-IRC) algorithm to suppress interference signals.

[0067] Specifically, the LMMSE algorithm refers to that the UE constructs an equalization matrix from channel estimation and noise estimation, and the equalization matrix can reflect the channel state and noise condition during signal transmission. Based on the equalization matrix, the LMMSE algorithm can improve the transmission performance of signals.

[0068] The LMMSE-IRC algorithm refers to 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 during signal transmission. Based on the equalization matrix, the LMMSE-IRC algorithm can improve the transmission performance of the signal. The LMMSE-IRC algorithm uses interference suppression combination technology based on the LMMSE algorithm, suppresses interference to improve the signal-to-noise ratio of the signal, 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 a communication environment with a large amount of interference and noise, and can better improve the reception quality of the signal and the performance of the communication system.

[0069] The E-LMMSE-IRC algorithm refers to that the UE constructs an equalization matrix based on 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. Based on the equalization matrix, the E-LMMSE-IRC algorithm can achieve signal equalization, thereby reducing multipath interference and spectral leakage during communication to improve the transmission performance of the signal. As can be known from the above principle, the E-LMMSE-IRC algorithm is more suitable for a Multi-User Multiple-Input Multiple-Output (MU-MIMO) scenario.

[0070] In the MU-MIMO scenario, multiple users simultaneously use the same spectrum resource for communication, which can cause serious interference and conflict. The traditional LMMSE-IRC algorithm or LMMSE algorithm can encounter a performance bottleneck when processing such multi-user interference. The E-LMMSE-IRC algorithm can better handle the multi-user interference problem and improve the reception quality of the signal and the performance of the communication system by introducing a nonlinear mapping function.

[0071] However, the complexity of the above-mentioned E-LMMSE-IRC algorithm is high, which can increase the processing power consumption of the UE. Moreover, the E-LMMSE-IRC algorithm is only suitable for the MU-MIMO scenario. If the UE is in a Single-User Multiple-Input Multiple-Output (SU-MIMO) scenario, the communication performance of the PDSCH can be reduced in the case of increased processing power consumption of the UE.

[0072] Therefore, the application provides a communication system, a method and related devices. The method comprises: 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 more effectively receive and process the PDSCH according to the corresponding receiving algorithm, which helps to reduce resource waste and improve the resource utilization of the whole communication system. In addition, reducing noise interference during communication through a suitable receiving algorithm can also improve signal quality and communication reliability.

[0073] In order to make the technical solutions of the application clearer and easier to understand, the communication method of the application will be introduced below in combination with the drawings.

[0074] Referring to FIG. 2, which is a signaling diagram of a communication method provided by an embodiment of the application. The communication method is applied to a communication system 20, which comprises 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, the indication information indicating whether there is a co-scheduled user equipment.

[0076] The co-scheduled user equipment (co-scheduled UE) refers to multiple user equipments scheduled by the network device 21 at the same time, which can be terminal devices such as mobile phones, computers and tablet computers. They communicate and transmit data by sharing network resources such as frequency spectrum and bandwidth. If there is a co-scheduled user equipment, 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 equipment, it indicates that the network device 21 and the terminal device 22 are in a SU-MIMO scenario. MU-MIMO refers to a MIMO system mode in which a base station serves multiple users on the same time-frequency resource using multiple antennas, and SU-MIMO refers to a MIMO system mode in which a base station serves only a single user on the same time-frequency resource using multiple antennas.

[0077] In some specific implementations, the indication information can 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, so as to send the indication information to the terminal device 22. The RRC is a technology for wireless resource management, control and scheduling through certain strategies and means, aiming to make full use of limited wireless network resources as much as possible under the requirement of quality of service, ensure reaching the planned coverage area, and improve the service capacity and resource utilization as much as possible.

[0078] In some examples, when it is determined that the MU-MIMO scheduling is not used for a long time due to the small number of antennas deployed in the cell, the network device 21 can send the indication information to the terminal device 22 by means of a broadcast message or an RRC configuration, so as to help the terminal device 22 understand the current scheduling strategy and resource allocation. The indication information at this time is information representing the absence of co-scheduled user equipment.

[0079] Specifically, the reason for not using the MU-MIMO scheduling due to the small number of antennas deployed in the cell is that the MU-MIMO technology uses multiple antennas to simultaneously transmit multiple independent data streams, so as to achieve 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, and therefore it is not likely to bring significant performance improvement to schedule multiple user data streams for transmission. Moreover, in the case of a small number of antennas, the signal processing and algorithm complexity required to implement the MU-MIMO can be significantly increased. This can lead to a decrease in the stability and reliability of the communication system in actual operation.

[0080] Specifically, the method for the network device 21 to determine whether the number of antennas deployed in the cell is small can include the following two methods: the first method is to directly determine whether the number of antennas in the cell corresponding to the network device is less than a first number threshold. If yes, it can be determined that the number of antennas deployed in the cell is small. The second method is to use the monitoring and measurement function of the network device 21 to detect one or more of the traffic, signal quality, signal strength and signal coverage range of the cell, and if the difference between the expected data and the actual data monitored and measured 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 the specific determination method is not limited in the present application.

[0081] In some examples, the network device 21 can also send the indication information to the terminal device 22 through a broadcast message or RRC configuration, so as to help the terminal device 22 understand the current scheduling strategy and resource allocation, when it is determined that the MU-MIMO scheduling is not used for a long time due to the relatively low load of the cell. The indication information at this time is information indicating that there is no co-scheduled user equipment.

[0082] Specifically, the reason why the MU-MIMO scheduling is not used for a long time due to the relatively low load of the cell is that the MU-MIMO scheduling helps to improve the spectrum efficiency and network capacity, but in the case of low load, there is no spectrum competition, and the advantage of MU-MIMO cannot be utilized. At this time, if the MU-MIMO scheduling is used, it may cause waste of spectrum resources. Therefore, in the case of low load of the network device, the long-time non-use of the multi-user MU-MIMO scheduling can reduce the complexity and calculation overhead of the network device, and improve the efficiency and stability of the network device.

[0083] Specifically, the method for the network device 21 to determine whether the load of the cell is relatively low can include the following two kinds: the first kind is to directly determine whether the load of the cell corresponding to the network device is lower than a second number threshold. If yes, it can be determined that the load of the cell is relatively low. The second kind 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 traffic load of the cell is low, the network device 21 can consider that the load of the cell is relatively low. It should be noted that the specific determination method is not limited in the present application.

[0084] The explicitness of sending the indication information through the broadcast message or RRC configuration is relatively high, and the terminal device 22 can explicitly receive the indication information indicating whether there is co-scheduled user equipment, which helps the terminal device 22 to avoid confusion or uncertainty. Moreover, 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 relatively high.

[0085] In some specific implementation manners, the indication information can also be indicated by the downlink control information (DCI). That is, the network device 21 sends the DCI indication to the terminal device 22, so as to send the indication information to the terminal device 22. The DCI is used to indicate the downlink control information, including the combination scheme of time domain, frequency domain and modulation. Once the DCI is formed, it will enter the channel coding and be transmitted through the PDCCH.

[0086] In some examples, a 1-bit field can be introduced directly in the DCI, which contains the 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 represents the absence of co-scheduled user equipment, and 1 represents the presence of 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 needs increase, this 1-bit field can be easily extended or modified to meet new needs. It should be noted that the above 1-bit field is only an example, and in actual application it can also be a 2-bit field, a 3-bit field, etc., which is not limited by the present 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 to understand the current scheduling strategy and resource allocation. The antenna port field is a kind of identification 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 transmit and receive wireless signals, thereby achieving higher transmission rate and better signal quality.

[0088] Specifically, removing existing entries means that the network device 21 deletes existing entries in the antenna port field, thereby adjusting the system, replacing the antenna, or optimizing the transmission performance, etc. 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 to 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.

[0089] Referring to FIG. 3, which is a schematic diagram of an antenna port field provided by an embodiment of the present application. As shown in FIG. 3, an entry can include Value, Number of DMRS CDM group(s) without data, and DMRS port(s).

[0090] Value indicates the sequence number of this entry, and each entry has a unique Value corresponding to it. In some examples, when the DCI indication sent by the network device 21 to the terminal device 22 contains Value = 1, the Number of DMRS CDM group(s) without data and DMRS port(s) sending indication information corresponding to Value = 1 can be sent.

[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. DMRS CDM group refers to a group of DMRS signals that are multiplexed using CDM technology. Among them, DMRS is a reference signal used for channel estimation to demodulate data. In wireless communication, 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 whose principle is to use different codes to distinguish each original signal. In some examples, when Number of DMRS CDM group(s) without data = 1, it means that there is one 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) indicates the identifier of the DMRS port used. DMRS port refers to the physical or logical port used to send or receive DMRS signals. 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 used to send or receive data. In other examples, when DMRSport(s) = {0, 1}, it means that the DMRS signal is sent or received through both port 0 and port 1 simultaneously. 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.

[0093] As shown in FIG. 3, the entries corresponding to Value = 12, 13, 14 are the newly added entries. It should be noted that the newly added entries generally represent that the remaining DMRS ports are used for co-scheduled user equipment according to the user equipment UE. That is, if the transmission of the indication information is indicated by the newly added entries (i.e., the entries corresponding to Value = 12, 13, 14) in the antenna port field in the DCI, the indication information generally represents that there is co-scheduled user equipment in the cell, the network device 21 is in the MU-MIMO scenario, and then the E-LMMSE-IRC receiver can be selected for use according to the specific interference estimation.

[0094] In some specific implementations, a plurality of new entries can be configured, and the specific one or more new entries to be activated can be selected by the media access control-control element (MAC-CE), so that the network device 21 transmits the indication information to the terminal device 22 by the newly added entries in the antenna port field in the DCI.

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

[0096] Referring to FIG. 5A, which is a schematic diagram of a DMRS configuration type 1 according to an embodiment of the present application. The PDSCH DMRS configuration type 1 supports 8 DMRS ports, which are mapped onto 2 CDM groups. Referring to FIG. 5B, which is a schematic diagram of a DMRS configuration type 2 according to an embodiment of the present application. The PDSCH DMRS configuration type 2 supports 12 DMRS ports, which are mapped onto 2 CDM groups. It can be seen that the main difference between the DMRS configuration type 1 and the DMRS configuration type 2 lies in the configuration manner of the frequency domain resource and the number of supported antenna ports. First, the difference in the configuration manner of the frequency domain resource is that the 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 range of frequency multiplexing with DMRS belonging to other UEs. While the DMRS configuration type 2 supports allocating every three pairs of resource elements to DMRS, which increases the range of frequency multiplexing and accordingly increases the range of MU-MIMO. Second, the difference in the number of supported antenna ports is that, for each symbol resource particle, the DMRS configuration type 1 uses 50% of the resources, while the DMRS configuration type 2 uses 33%. In terms of support for antenna ports, the DMRS configuration type 1 supports up to 4 and 8 antenna ports in the case of single-symbol and double-symbol, respectively. While the DMRS configuration type 2 supports up to 6 and 12 antenna ports in the case of single-symbol and double-symbol, respectively.

[0097] It should be noted that the entries in FIG. 3, FIG. 4A and FIG. 4B are only examples, and the above entries can be part of entries selected from existing entries, or brand new entries configured by RRC. For specific entries, the present application does not make any limitation.

[0098] In some specific implementation manners, when the network device 21 configures two transport blocks (TBs), the antenna port field in the DCI and one of the modulation and coding scheme (MCS), new data indicator (NDI), and redundancy version (RV) in the DCI can be used for joint indication.

[0099] The MCS in the DCI is used to indicate the modulation scheme and the coding scheme. The modulation scheme defines the waveform and phase of the signal so as to effectively resist interference and noise when transmitting in the channel. The coding scheme defines the degree of redundancy and the checking mechanism of the data in the transmission process, so as to improve the reliability and error correction capability of the data. Therefore, the MCS is used to optimize the transmission performance of the signal.

[0100] NDI is an identifier used to identify new data in a transport block. In a communication system, especially a system like LTE, NDI is used to distinguish new data and retransmission data in the same transport block. In the process of data transmission, retransmission of data may be needed in order to improve reliability. In order to distinguish new data and retransmission 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; while when the data is marked as retransmission, the NDI is set to another specific value. By using NDI, the receiving end can distinguish new data and retransmission data, and perform corresponding processing as needed. This is crucial to ensure correct decoding of data and avoid repeated processing of retransmission data.

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

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

[0104] Referring to FIG. 6, which is a schematic diagram of a fourth antenna port field provided by the embodiments of the present application. If the 2TBs in the DCI have different MCSs and the RVs are not equal to 1, it is proved that both 2TBs are activated, i.e., 2TB normal transmission. As can be seen from FIG. 6, the entries corresponding to Value = 2-25 when Two Codeword are the newly added entries. It should be noted that the newly added entries generally represent that the current PDSCH uses MU-MIMO. That is, if the Antenna port indicates an existing entry, the terminal device 22 considers that the current PDSCH uses SU-MIMO. If the Antenna port indicates a newly introduced entry, the terminal device 22 considers that the current PDSCH uses MU-MIMO.

[0105] If the 2TBs in the DCI have the same MCS equal to 26 and the RVs are equal to 1, it is proved that only 1TB is activated. At this time, the terminal device 22 considers that the current PDSCH uses SU-MIMO.

[0106] Referring to FIG. 7A, which is a schematic diagram of a fifth antenna port field provided by the embodiments of the present application. Referring to FIG. 7B, which is a schematic diagram of a sixth antenna port field provided by the embodiments of the present application. Referring to FIG. 7C, which is a schematic diagram of a seventh antenna port field provided by the embodiments of the present application. Referring to FIG. 7D, which is a subsequent schematic diagram of FIG. 7C. Among them, FIG. 7A is the antenna port field when the DMRS configuration type is 1 and the maximum number of DMRS symbols is 2, FIG. 7B is the antenna port field when the DMRS configuration type is 2 and the maximum number of DMRS symbols is 1, and FIG. 7C and FIG. 7D are the antenna port field when the DMRS configuration type is 2 and the maximum number of DMRS symbols is 2. In FIG. 7A, the entries corresponding to Value = 4-30 when Two Codeword are the newly added entries. In FIG. 7B, the entries corresponding to Value = 2-22 when Two Codeword are the newly added entries. In FIG. 7C and FIG. 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 FIG. 6, FIG. 7A, FIG. 7B, and FIG. 7C and FIG. 7D are only examples, and the above entries can be part of the entries selected from the existing entries, or completely new entries configured by RRC. For specific entries, the present application does not make any limitation.

[0108] Specifically, if the selected entries are from the existing entries, the entries can be reused according to the entries indicated in One Codeword. If the entries are newly configured by RRC, multiple new entries can be configured, and the specific activation of one or more new entries can be selected by a media access control control element (MAC-CE), so that the network device 21 transmits the indication information to the terminal device 22 through the new entries added in 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 the terminal device 22 obtains the indication information indicating that there is no co-scheduled user equipment, the terminal device 22 can select a suitable receiving algorithm, such as an LMMSE algorithm or an 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 receiving signal vector corresponding to the terminal device 22 and the estimation of the transmitted signal corresponding to the network device 21 is established through the influence of the channel and the noise. Specifically, the relationship can be embodied by the following formula (1):

[0112] wherein, is the estimation of the transmitted signal, W is the equalization matrix, and y is the receiving 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 in the receiving process. The receiving signal vector refers to the signal received by the terminal device 22.

[0113] Specifically, the equalization matrix W can be embodied by the following formula (2):

[0114] wherein, W is the equalization matrix, is the channel estimation matrix of the expected 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 represented by the following formula (3):

[0116] wherein, R is the correlation matrix, is the channel estimation matrix of the expected signal, and σ 2is the noise variance, I is an identity matrix with the same size as the number of columns of the channel estimation matrix.

[0117] In some examples, the correlation matrix R of the LMMSE-IRC algorithm can be represented by the following formula (3):

[0118] wherein 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 represents that there is a co-scheduled user equipment, the terminal equipment receives the PDSCH using the E-LMMSE-IRC algorithm.

[0120] After obtaining the indication information representing that there is no co-scheduled user equipment, the terminal equipment 22 can 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 R of the E-LMMSE-IRC algorithm can be represented by the following formula (5):

[0122] wherein R is the correlation matrix, is the channel estimation matrix of the desired signal, is the channel estimation matrix of the main interference source (such as 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 DMRS of the main interference source, 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, which includes a network device and a terminal equipment. When there is a co-scheduled user equipment, the PDSCH is received according to the E-LMMSE-IRC algorithm, and when there is no co-scheduled user equipment, the PDSCH is received according to the LMMSE or LMMSE-IRC algorithm, which helps to reduce resource waste and improve the resource utilization rate of the communication system. Moreover, by using a suitable receiving algorithm to reduce noise interference during communication, the signal quality and the reliability of communication can be improved.

[0124] Referring to FIG. 8, which is a schematic diagram of a communication method provided by an embodiment of the present application. The communication method is applied to a network device such as a base station, and the method includes:

[0125] S801: detecting whether there is a co-scheduled user equipment for a terminal equipment in communication with a network device.

[0126] S802: if yes, sending first indication information to the terminal equipment, so that the terminal equipment receives a physical downlink shared channel (PDSCH) according to an extended linear minimum mean square error-interference rejection combining (E-LMMSE-IRC) algorithm.

[0127] S803: if no, sending second indication information to the terminal equipment, so that the terminal equipment receives the PDSCH according to a linear minimum mean square error (LMMSE) algorithm or a LMMSE-IRC algorithm.

[0128] Referring to FIG. 9, which is a schematic diagram of another communication method provided by an embodiment of the present application. The communication method is applied to a terminal equipment such as a mobile phone or a computer, and the method comprises:

[0129] S901: if the first indication information sent by the network device is received, receiving the PDSCH according to the E-LMMSE-IRC algorithm, the first indication information indicating that there is a co-scheduled user equipment.

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

[0131] It should be noted that the communication method is similar to the static effect of the communication system, and thus will not be described here.

[0132] Based on the foregoing communication method, the present application further provides an electronic device for executing the foregoing communication method. The following will be described in conjunction with embodiments.

[0133] Referring to FIG. 10, which is a schematic diagram of a hardware composition of an electronic device according to an embodiment of the present application. The electronic device can be a first device, including but not limited to a base station, a core network unit. FIG. 10 shows a simplified schematic diagram of a base station structure. The base station includes a 410 part, a 420 part, and a 430 part. The 410 part is mainly used for baseband processing, controlling the base station, etc. The 410 part is usually the control center of the base station, which can be referred to as a processor, and is used to control the base station to perform the processing operations of the first device side in the above method embodiments. The 420 part is mainly used for storing computer program codes and data. The 430 part is mainly used for transceiving radio frequency signals and converting radio frequency signals and baseband signals. The 430 part can be referred to as a transceiver module, a transceiver, a transceiving circuit, or a transceiver, etc. The transceiver module of the 430 part, which can also be referred to as a transceiver or a transceiver, etc., 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 devices in the 430 part for realizing the receiving function can be regarded as a receiver, and the devices for realizing the sending function can be regarded as a transmitter, i.e., the 430 part includes a receiver 432 and a transmitter 431. The receiver can also be referred to as a receiving module, a receiver, or a receiving circuit, etc., and the transmitter can be referred to as a transmitting module, a transmitter, or a transmitting circuit, etc.

[0134] The 410 part and the 420 part can include one or more single boards, and each single board can include one or more processors and one or more memories. The processors are used to read and execute the programs in the memories to realize the baseband processing functions and control the base station. If there are multiple single boards, the single boards can be interconnected to enhance the processing capability. As an optional implementation, the multiple single boards can also share one or more processors, or share one or more memories, or share one or more processors at the same time.

[0135] For example, in an implementation, the transceiver module of the 430 part is used to execute the transceiving-related processes performed by the base station (the first device) in the above method embodiments. The processor of the 410 part is used to execute the processing-related processes performed by the base station in the above method embodiments.

[0136] It should be understood that FIG. 10 is only an example and not limiting, and the above network device including a processor, a memory, and a transceiver can not depend on the structure shown in FIG. 10.

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

[0138] It can be understood that the structure illustrated in the embodiment does not constitute a specific limitation on the electronic device. In other embodiments, the electronic device can include more or fewer components than those illustrated, or combine certain components, or split certain components, or different arrangement of components. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.

[0139] The processor 510 can include one or more processing units, for example: the processor 510 can 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), etc. Different processing units can be independent devices, or can be integrated in one or more processors.

[0140] It can be understood that the interface connection relationship between the modules illustrated in the embodiment is only illustrative, and does not constitute a structural limitation on the electronic device. In other embodiments of the present application, the electronic device can also use 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 through the external memory interface 520 to realize the data storage function. For example, files such as music and videos are saved in the external memory card.

[0142] The internal memory 521 can be used to store computer executable program codes including instructions. The processor 510 performs various function applications and data processing of the electronic device by executing the instructions stored in the internal memory 521. The internal memory 521 can include a program storage area and a data storage area. The program storage area can store an operating system, at least one application program (such as a sound play function, an image play function, etc.) required by a function, etc. The data storage area can store data (such as audio data, a phone book, etc.) created during the use of the electronic device, etc. In addition, the internal memory 521 can include a high-speed random access memory, and can further include a non-volatile memory such as at least one magnetic disk storage device, a flash memory device, a universal flash storage (UFS), etc. The processor 510 performs various function applications and data processing of the electronic device by executing 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 the antenna 1, the antenna 2, the mobile communication module 530, the wireless communication module 540, a modem processor, and a baseband processor, etc.

[0144] The antenna 1 and the 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 multiplexed to improve the utilization rate of the antennas. For example, the antenna 1 can be multiplexed as a diversity antenna of a wireless local area network. In some other embodiments, the antennas can be used in combination with a tuning switch.

[0145] The mobile communication module 530 can provide a solution including 2G / 3G / 4G / 5G wireless communication applied to the electronic device. The mobile communication module 530 can 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 perform filtering, amplification, etc. on the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The mobile communication module 530 can also amplify the signals modulated by the modem processor, and convert the signals into electromagnetic waves to be radiated out through the antenna 1. In some embodiments, at least part of the function modules of the mobile communication module 530 can be arranged in the processor 510. In some embodiments, at least part of the function modules of the mobile communication module 530 and at least part of the modules of the processor 510 can be arranged in the same device.

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

[0147] In addition, an operating system runs on the components. For example, an iOS operating system, an Android operating system, a Windows operating system, and the like. An application program can be installed and run on the operating system. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the explanations and beneficial effects of the above-mentioned related contents in any of the electronic devices can refer to the corresponding method embodiments provided above, and will not be described here.

[0148] Referring to FIG. 12, which is a schematic diagram of a communication apparatus provided in an embodiment of the present application. The communication apparatus 1200 is applied to a network device, and the communication apparatus 1200 comprises: a sending module 1201; the sending module 1201 is configured to send 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.

[0149] Therefore, when there is a co-scheduled user equipment, the terminal device can more effectively receive and process the PDSCH according to the corresponding receiving algorithm, which helps to reduce resource waste and improve the resource utilization rate of the entire communication system. Moreover, reducing noise interference during communication through a suitable receiving algorithm can also improve signal quality and communication reliability.

[0150] Referring to FIG. 13, which is a schematic diagram of another communication apparatus provided in an embodiment of the present application. The communication apparatus 1300 is applied to a terminal device, and comprises: 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, the indication information indicating whether there is a co-scheduled user equipment; and the second receiving module 1302 is configured to receive a PDSCH according to a receiving algorithm corresponding to the indication information.

[0152] Therefore, when there is a co-scheduled user equipment, the terminal device can more effectively receive and process the PDSCH according to the corresponding receiving algorithm, which helps to reduce resource waste and improve the resource utilization rate of the entire communication system. Moreover, reducing noise interference during communication through a suitable receiving algorithm can also improve signal quality and communication reliability.

[0153] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and apparatus can refer to the corresponding processes in the foregoing method embodiments, and will not be described here.

Claims

1. A communication method characterized by comprising: The method is applied to a network device, and comprises the following steps: Detecting that a terminal device in communication with the network device has a co-scheduled user equipment; Sending first indication information to the terminal device, the first indication information indicating that there is a co-scheduled user equipment, so that the terminal device receives a PDSCH according to an extended linear minimum mean square error-interference rejection combining (E-LMMSE-IRC) algorithm; Detecting that a terminal device in communication with the network device does not have a co-scheduled user equipment; Sending second indication information to the terminal device, the second indication information indicating that there is no co-scheduled user equipment, so that the terminal device receives a PDSCH according to a linear minimum mean square error (LMMSE) algorithm or a minimum mean square error-interference rejection combining (LMMSE-IRC) algorithm.

2. The method of claim 1, wherein, The step of sending the second indication information to the terminal device comprises the following steps: Sending a broadcast message and / or a radio resource control (RRC) configuration to the terminal device, the broadcast message and / or the RRC configuration comprising the second indication information.

3. The method of claim 2, wherein, The step of sending the broadcast message and / or the RRC configuration to the terminal device comprises the following steps: If the number of antennas in a cell corresponding to the network device is less than a first threshold, or the load of the cell corresponding to the network device is less than a second threshold, then sending the broadcast message and / or the RRC configuration to the terminal device.

4. The method of claim 3, wherein, The step of sending the first indication information to the terminal device comprises the following steps: Sending a downlink control information (DCI) indication to the terminal device, the DCI indication comprising the first indication information.

5. The method of claim 4, wherein, The step of sending the DCI indication to the terminal device, the DCI indication comprising the first indication information, comprises the following steps: Sending the DCI indication to the terminal device, the DCI indication comprising a target bit field, the target bit field comprising the first indication information.

6. The method of claim 5, wherein, The step of sending the DCI indication to the terminal device, the DCI indication comprising the first indication information, comprises the following steps: Sending the DCI indication to the terminal device, the DCI indication comprising a newly-added antenna port entry, the newly-added antenna port entry indicating the first indication information.

7. The method of claim 1, wherein, The step of sending the first indication information to the terminal device, or the step of sending the second indication information to the terminal device, comprises the following steps: When the network device configures two transport blocks (TBs), sending the DCI indication to the terminal device, the DCI indication comprising 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 the one or more of the MCS, the NDI, and the RV collectively indicating the first indication information or the second indication information.

8. The method of claim 7, wherein, The step of sending the DCI indication to the terminal device when the network device configures the two TBs, comprises the following steps: When the network device satisfies one of the following conditions: a first demodulation reference signal (DMRS) configuration type and a maximum number of DMRS symbols being 2, a second DMRS configuration type and a maximum number of DMRS symbols being 1, or a second DMRS configuration type and a maximum number of DMRS symbols being 2, then sending the DCI indication to the terminal device.

9. The method of claim 7, 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 the one or more of the MCS, the NDI, and the RV jointly representing first indication information or second indication information, including: If the DCI indication represents a MCS of two TBs not equal to a first target value or a RV of the two TBs not equal to a 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.

10. The method of claim 7, 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 the one or more of the MCS, the NDI, and the RV jointly representing first indication information or second indication information, including: If the DCI indication represents a MCS of two TBs not equal to a first target value or a RV of the two TBs not equal to a second target value, and the DCI indication includes an entry other than the newly added entry of the antenna port field, the DCI indication represents the second indication information.

11. The method of claim 7, 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 the one or more of the MCS, the NDI, and the RV jointly representing first indication information or second indication information, including: If the DCI indication represents a MCS of one TB equal to a first target value and a RV of the TB equal to a second target value, the DCI indication represents the 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 medium access control-control element (MAC-CE).

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

14. The method of claim 13, wherein, The receiving of the second indication information sent by the network device includes: Receiving a broadcast message and / or RRC configuration sent by the network device, the broadcast message and / or RRC configuration including the second indication information.

15. The method of claim 13, wherein, The receiving of the first indication information sent by the network device includes: Receiving a DCI indication sent by the network device, the DCI indication including the first indication information.

16. The method of claim 15, wherein, The receiving of the DCI indication sent by the network device, the DCI indication including the first indication information, includes: The DCI indication sent by the network device is received, and the DCI indication includes a target bit field, and the target bit field includes first indication information.

17. The method of claim 15, wherein, The DCI indication sent by the network device is received, and the DCI indication includes first indication information. The DCI indication sent by the network device is received, and the DCI indication includes an added entry of an antenna port, and the added entry of the antenna port represents first indication information.

18. The method of claim 13, wherein, The first indication information sent by the network device is received, or the second indication information sent by the network device is received. When the network device configures two TBs, the DCI indication sent by the network device is received, the DCI indication includes an antenna port field, and one or more of modulation and coding scheme (MCS), new data indicator (NDI), and redundancy version (RV), and the antenna port field and the one or more of the MCS, the NDI, and the RV jointly represent first indication information or second indication information.

19. The method of claim 18, wherein, When the network device configures two TBs, the DCI indication sent by the network device is received. When the network device satisfies one of the following conditions: a first DMRS configuration type and a maximum number of DMRS symbols is 2, a second DMRS configuration type and a maximum number of DMRS symbols is 1, or a second DMRS configuration type and a maximum number of DMRS symbols is 2, the DCI indication sent by the network device is received.

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

21. The method of claim 18, wherein, The DCI indication includes an antenna port field, and one or more of modulation and coding scheme (MCS), new data indicator (NDI), and redundancy version (RV), and the antenna port field and the one or more of the MCS, the NDI, and the RV jointly represent first indication information or second indication information. If the MCS of the two TBs indicated by the DCI indication is not equal to a first target value or the RV of the two TBs indicated by the DCI indication is not equal to a second target value, and the DCI indication includes an entry of an antenna port field other than the added entry, the DCI indication represents second indication information.

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

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

24. A network device, comprising: The network device comprises: 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 executes the method according to any one of claims 1 to 12.

25. A terminal device, comprising: The terminal device comprises: 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 terminal device executes the method according to any one of claims 13 to 23.

26. A communication system, characterized by The system comprises a terminal device and the network device, wherein the network device is configured to execute the method according to any one of claims 1 to 12, and the terminal device is configured to execute the method according to any one of claims 13 to 23.

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

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