Method for signaling assistance information to user equipment

Abstract

In accordance with an embodiment, a method and apparatus are disclosed for receiving a configuration for multi-user multiple-input multiple-output from a network; and applying at least one default setting for at least one parameter for the multi-user multiple-input multiple-output advanced receiver based on the configuration for the multi-user multiple-input multiple-output; receiving, from a network, a configuration for at least one parameter for a multi-user multiple-input multiple-output advanced receiver; and in response to one or more of the at least one parameter being present within the configuration for the at least one parameter for the multi-user multiple-input multiple-output advanced receiver, applying at least one non-default setting for one or more of the at least one parameter for the multi-user multiple-input multiple-output advanced receiver.

Description

Technical Field

[0001] The exemplary and non-limiting exemplary embodiments relate generally to communications, and more particularly, to methods for signaling auxiliary information to user equipment supporting an advanced receiver for MU-MIMO. Background Art

[0002] It is known that a communication device receives signaling in a communication network. Summary of the invention

[0003] Various aspects of examples of the invention are set out in the claims.

[0004] According to a first aspect of the present invention, a method and apparatus are disclosed for receiving a configuration for a multi-user multiple-input multiple-output (MIMO) from a network; and applying at least one default setting for at least one parameter for a multi-user multiple-input multiple-output (MIMO) advanced receiver based on the configuration for the multi-user multiple-input multiple-output (MIMO).

[0005] According to a second aspect of the present invention, a method and apparatus are disclosed for determining a configuration for a multi-user multi-input multi-output; and sending the configuration for the multi-user multi-input multi-output to a user equipment; wherein the configuration for the multi-user multi-input multi-output causes the user equipment to apply at least one default setting for at least one parameter for a multi-user multi-input multi-output advanced receiver. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The foregoing aspects and other features are explained in the following description in conjunction with the accompanying drawings.

[0007] Figure 1 is a block diagram of one possible and non-limiting system in which example embodiments may be practiced.

[0008] Figure 2 Configuration of a UE with default and non-default network assisted signaling settings for a MU-MIMO advanced receiver is shown.

[0009] Figure 3 is an example apparatus configured to implement the examples described herein.

[0010] Figure 4 Representations of examples of non-volatile storage media for storing instructions implementing the examples described herein are shown.

[0011] Figure 5 is an example method based on the examples described herein.

[0012] Figure 6 is an example method based on the examples described herein. DETAILED DESCRIPTION

[0013] Steering Figure 1 , which shows a block diagram of one possible and non-limiting example in which the example embodiments may be implemented. A user equipment (UE) 110, a radio access network (RAN) node 170 and a network element 190 are illustrated. Figure 1 In the example of , a user equipment (UE) 110 wirelessly communicates with a wireless network 100. A UE is a wireless device that can access the wireless network 100. The UE 110 includes one or more processors 120, one or more memories 125, and one or more transceivers 130 interconnected by one or more buses 127. Each transceiver in the one or more transceivers 130 includes a receiver Rx132 and a transmitter Tx 133. The one or more buses 127 can be address, data, or control buses, and can include any interconnection mechanism, such as a series of lines on a motherboard or integrated circuit, optical fiber or other optical communication devices, etc. The one or more transceivers 130 are connected to one or more antennas 128. The one or more memories 125 include computer program code 123. The UE 110 includes a module 140, which includes one or both of the parts 140-1 and / or 140-2 that can be implemented in a variety of ways. The module 140 can be implemented in hardware as the module 140-1, such as being implemented as part of the one or more processors 120. Module 140-1 may also be implemented as an integrated circuit or implemented by other hardware such as a programmable gate array. In another example, module 140 may be implemented as module 140-2, which is implemented as computer program code 123 and executed by one or more processors 120. For example, one or more memories 125 and computer program code 123 may be configured to utilize one or more processors 120 to cause user equipment 110 to perform one or more operations as described herein. UE 110 communicates with RAN node 170 via wireless link 111.

[0014] In this example, the RAN node 170 is a base station that provides access to the wireless network 100 for wireless devices, such as the UE 110. The RAN node 170 may be, for example, a base station for 5G, also known as New Radio (NR). In 5G, the RAN node 170 may be a NG-RAN node, which is defined as a gNB or ng-eNB. A gNB is a node that provides NR user plane and control plane protocol termination to the UE, and is connected to the 5GC (e.g., network element 190) via an NG interface, such as connection 131. An ng-eNB is a node that provides E-UTRA user plane and control plane protocol termination to the UE, and is connected to the 5GC via an NG interface, such as connection 131. The NG-RAN node may include multiple gNBs, which may also include a central unit (CU) (gNB-CU) 196 and a distributed unit (DU) (gNB-DU), with DU 195 being shown. Note that the DU 195 may include or be coupled to and control a radio unit (RU). The gNB-CU 196 is a logical node that hosts the radio resource control (RRC), SDAP and PDCP protocols of the gNB or the RRC and PDCP protocols of the en-gNB, which controls the operation of one or more gNB-DUs. The gNB-CU 196 terminates the F1 interface connected to the gNB-DU 195. The F1 interface is shown as reference numeral 198, although reference numeral 198 also shows a link between a remote element of the RAN node 170 and a centralized element of the RAN node 170, such as between the gNB-CU 196 and the gNB-DU 195. The gNB-DU 195 is a logical node that hosts the RLC, MAC and PHY layers of the gNB or en-gNB, and its operation is partially controlled by the gNB-CU 196. One gNB-CU 196 supports one or more cells. One cell can be supported by one gNB-DU 195, or one cell can be supported / shared by multiple DUs under RAN sharing. The gNB-DU 195 terminates the F1 interface 198 which is connected to the gNB-CU 196. Note that the DU 195 is considered to include the transceiver 160, e.g., as part of the RU, but some examples herein may have the transceiver 160 as part of a separate RU, e.g., under the control of and connected to the DU 195. The RAN node 170 may also be an eNB (evolved Node B) base station for LTE (Long Term Evolution), or any other suitable base station or node.

[0015] The RAN node 170 includes one or more processors 152, one or more memories 155, one or more network interfaces (N / WI / F) 161, and one or more transceivers 160 interconnected by one or more buses 157. Each of the one or more transceivers 160 includes a receiver Rx 162 and a transmitter Tx 163. The one or more transceivers 160 are connected to one or more antennas 158. The one or more memories 155 include computer program code 153. The CU 196 may include the processor 152, the one or more memories 155, and the network interface 161. Note that the DU 195 may also contain its own memory / memories and processor and / or other hardware, but these are not shown.

[0016] The RAN node 170 includes a module 150, which includes one or both of the parts 150-1 and / or 150-2 that can be implemented in a variety of ways. The module 150 can be implemented in hardware as the module 150-1, such as being implemented as part of one or more processors 152. The module 150-1 can also be implemented as an integrated circuit or implemented by other hardware such as a programmable gate array. In another example, the module 150 can be implemented as a module 150-2, which is implemented as a computer program code 153 and executed by one or more processors 152. For example, one or more memories 155 and the computer program code 153 are configured to utilize the one or more processors 152 to cause the RAN node 170 to perform one or more of the operations described herein. Note that the functionality of the module 150 can be distributed, such as being distributed between the DU 195 and the CU 196, or implemented only in the DU 195.

[0017] One or more network interfaces 161 communicate across networks, such as via links 176 and 131. Two or more gNBs 170 may communicate using, for example, link 176. Link 176 may be wired or wireless or both, and may implement, for example, an Xn interface for 5G, an X2 interface for LTE, or other suitable interfaces for other standards.

[0018] The one or more buses 157 may be address, data, or control buses, and may include any interconnection mechanism, such as a series of wires on a motherboard or integrated circuit, optical fiber or other optical communication devices, wireless channels, etc. For example, the one or more transceivers 160 may be implemented as a remote radio head (RRH) 195 for LTE or a distributed unit (DU) 195 for a gNB implementation for 5G, where other elements of the RAN node 170 may be physically located at a different location from the RRH / DU 195, and the one or more buses 157 may be implemented in part, for example, as fiber optic cables or other suitable network connections to connect other elements of the RAN node 170 (e.g., central unit (CU), gNB-CU 196) to the RRH / DU 195. Reference numeral 198 also indicates those suitable network links.

[0019] The RAN node / gNB may include one or more TRPs to which the methods described herein may be applied. Figure 1 RAN node 170 is shown to include TRP 51 and TRP 52 in addition to the TRP represented by transceiver 160. Similar to transceiver 160, TRP 51 and TRP 52 may each include a transmitter and a receiver. RAN node 170 may host or include Figure 1 Other TRPs not shown.

[0020] The relay nodes in NR are called integrated access and backhaul nodes. The mobile terminal part of the IAB node facilitates the backhaul (parent link) connection. In other words, the mobile terminal part includes the functionality of carrying UE functionality. The distributed unit part of the IAB node facilitates the so-called access link (sub-link) connection (i.e., for access link UE, and for the backhaul of other IAB nodes, in the case of multi-hop IAB). In other words, the distributed unit part is responsible for certain base station functions. The IAB scenario can follow a so-called split architecture, in which the central unit hosts the higher layer protocols to the UE and terminates the control plane and user plane interfaces to the 5G core network.

[0021] Note that the description herein indicates that a "cell" performs a function, but it should be clear that the devices that form the cell can perform the function. A cell constitutes part of a base station. That is, each base station can have multiple cells. For example, there may be three cells for a single carrier frequency and associated bandwidth, each covering one-third of a 360-degree area, so that the coverage area of ​​a single base station covers an approximate ellipse or circle. In addition, each cell may correspond to a single carrier, and a base station may use multiple carriers. Therefore, if each carrier has three 120-degree cells and there are two carriers, the base station has a total of 6 cells.

[0022] The wireless network 100 may include a network element or element 190, which may include core network functionality and provide connectivity to another network, such as a telephone network and / or a data communication network (e.g., the Internet), via a link or link 181. Such core network functionality for 5G may include a location management function (LMF) and / or an access and mobility management function (AMF) and / or a user plane function (UPF) and / or a session management function (SMF). Such core network functionality for LTE may include MME (mobility management entity) / SGW (serving gateway) functionality. Such core network functionality may include SON (self-organizing / optimized network) functionality. These are merely example functions that may be supported by the network element 190, and it is noted that both 5G and LTE functionality may be supported. The RAN node 170 is coupled to the network element 190 via a link 131. Link 131 may be implemented, for example, as an NG interface for 5G, or an S1 interface for LTE, or other suitable interfaces for other standards. The network element 190 includes one or more processors 175, one or more memories 171, and one or more network interfaces (N / WI / F) 180 interconnected by one or more buses 185. The one or more memories 171 include computer program code 173. The computer program code 173 may include SON and / or MRO functionality 172.

[0023] The wireless network 100 may implement network virtualization, which is the process of combining hardware and software network resources and network functionality into a single, software-based managed entity or virtual network. Network virtualization involves platform virtualization, which is often combined with resource virtualization. Network virtualization is classified as combining many networks or portions of networks into a virtual unit externally, or providing network-like functionality internally to software containers on a single system. Note that the virtualized entities resulting from network virtualization are still implemented to some extent using hardware such as processors 152 or 175 and memories 155 and 171, and such virtualized entities also create technical effects.

[0024] Computer readable memories 125, 155, and 171 may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as semiconductor-based memory devices, flash memory, magnetic memory devices and systems, optical memory devices and systems, non-volatile memory, transient memory, fixed memory, and removable memory. Computer readable memories 125, 155, and 171 may be components for performing storage functions. As non-limiting examples, processors 120, 152, and 175 may be of any type suitable for the local technical environment and may include one or more of a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), and a processor based on a multi-core processor architecture. Processors 120, 152, and 175 may be components for performing functions, such as controlling UE 110, RAN node 170, network element 190, and other functions described herein.

[0025] In general, various example embodiments of the user device 110 may include, but are not limited to, a cellular phone, such as a smart phone, a tablet computer, a personal digital assistant (PDA) with wireless communication capabilities, a portable computer with wireless communication capabilities, an image capture device such as a digital camera with wireless communication capabilities, a gaming device with wireless communication capabilities, a music storage and playback device with wireless communication capabilities, an Internet device including those that allow wireless Internet access and browsing, a tablet device with wireless communication capabilities, a head-mounted display such as those that implement virtual / augmented / mixed reality, and a portable unit or terminal incorporating a combination of such functions. The UE 110 may also be a vehicle such as a car, or a UE installed in a vehicle, a UAV such as, for example, a drone, or a UE installed in a UAV. The user device 110 may be a terminal device such as a mobile phone, a mobile device, a sensor device, etc., which may be a device used by a user or a device not used by a user.

[0026] UE 110, RAN node 170 and / or network element 190 (and associated memory, computer program code and modules) may be configured to implement (eg, in part) the methods described herein. Figure 1 The computer program code 123, module 140-1, module 140-2 and other elements / features of the UE 110 shown in FIG. 1 may implement the user equipment related aspects of the examples described herein. Similarly, Figure 1 The computer program code 153, module 150-1, module 150-2, and other elements / features of the RAN node 170 shown in the figure may implement the example gNB / TRP related aspects described herein. Figure 1The computer program code 173 and other elements / features of the network element 190 shown in FIG. 1 may be configured to implement the example network element related aspects described herein.

[0027] Having thus introduced a suitable but non-limiting technical context for practicing example embodiments, example embodiments are now described in more detail.

[0028] Under the 3GPP Rel-18 RAN work item (WI) for NR demodulation performance evolution [RP-232685], RAN Working Group 4 (RAN4) has examined how to further enhance DL throughput and coverage performance by studying and specifying requirements for more advanced UE receivers for MU-MIMO scenarios.

[0029] A primary objective of this WI is to introduce network assisted signaling to support advanced UE receivers to eliminate inter-user interference in the context of MU-MIMO, for example in accordance with R4-2309895 and R4-2316980, with the following related sub-objectives: identifying the signaling required to support advanced receivers to eliminate inter-user interference for MU-MIMO, introducing DCI-based assisted signaling, and introducing RRC-based assisted signaling and UE capabilities.

[0030] Further details of the high-level requirements considered for RRC-based network assisted signalling are discussed in a RAN4 liaison statement to RAN Working Group 2 (RAN2), described in detail below [R4-2316980].

[0031] RAN4 discussed the need for UE network assistance signaling for MU-MIMO advanced receivers for UEs that are able to utilize the cancellation of one or more co-scheduled UEs. As a result, RAN4 agreed to introduce new Rel-18 RRC-based network assistance signaling to assist UEs supporting MU-MIMO advanced receivers by providing additional information related to co-scheduled UEs. Regarding the content of Rel-18 new RRC network assistance signaling, RAN4 agreed on the needs for the following (1 to 2):

[0032] 1. When the information is available, dedicated RRC signaling is provided to the UE (target UE) to indicate the information in the following points (1a to 1d) respectively:

[0033] 1a. For a target and any co-scheduled UE in different CDM groups and with the same DMRS sequence, when PRG=2 or 4, can the target UE assume that the precoding and resource allocation of the co-scheduled UE is the same as the precoding and resource allocation in the PRG level grid configured to the target UE.

[0034] 1b. Whether the DM-RS power boost configuration (i.e., the number of DM-RS CDM groups without data, TS38.214 of Table 4.1-1) of all co-scheduled UEs with the same DM-RS sequence as the target UE is the same as that of the target UE.

[0035] 1c. Whether the time domain resource allocation of PDSCH symbols for all co-scheduled UEs having the same DM-RS sequence as the target UE is the same as that of the target UE.

[0036] 1d. The MCS table with the highest modulation order among all MCS tables configured for the co-scheduled UEs with the same DM-RS sequence as the target UE. The MCS table is one of the following: 1024QAM MCS table (from Table 5.1.3.1-4 of TS38.214), 256QAM MCS table (from Table 5.1.3.1-2 of TS38.214), or 64QAM MCS table (from Table 5.1.3.1-1 or 5.1.3.1-3 of TS38.214).

[0037] 2. In addition, RAN4 agrees that the presence of MU-MIMO DCI signaling included in the liaison statement to RAN Working Group 1 (RAN1) in R4-2309895 is configured by RRC signaling.

[0038] In R4-2315907, some additional aspects of RRC-based network-assisted signaling are discussed; for example, it is suggested that by default, a UE supporting an advanced receiver for MU-MIMO should assume that each of the first three points described under (1) should be valid / true, and the network can optionally signal from the network to the UE in an RRC message whether any one or more of those assumptions are false.

[0039] In Rel-17, a similar concept of applying default assumptions for network assisted signaling and explicitly indicating when these assumptions are invalid is specified for CRS interference mitigation in scenarios with overlapping LTE-NR spectrum [TS38.331 section 6.3.2]. For this scenario, the UE assumes that a set of default configurations is valid unless the network explicitly indicates via RRC signaling the field lte-NeighCellsCRS-Assumptions as false and at the same time indicates a list of LTE neighbor cell configuration information under lte-NeighCellsCRS-AssistInfoList, which is used to assist the UE in performing CRS interference mitigation.

[0040] In RAN4 discussions, many companies prefer that the network explicitly signal to the target UE whether each of the following high-level receiver assumptions is valid (true) or invalid (false) (a to c):

[0041] a) When PRG=2 or 4, the precoding and resource allocation of the co-scheduled UE having the same DM-RS sequence as the target UE and in a different CDM group from the target UE are the same as the precoding and resource allocation in the PRG level grid configured to the target UE.

[0042] b) Whether the DM-RS power boost configuration of all co-scheduled UEs having the same DM-RS sequence as the target UE is the same as that of the target UE.

[0043] c) Whether the time domain resource allocation of PDSCH symbols for all co-scheduled UEs having the same DM-RS sequence as the target UE is the same as that of the target UE.

[0044] However, under this framework, there will be ambiguity when the network does not send any auxiliary signaling for MU-MIMO Advanced receiver to the UE. Therefore, this motivates the need to define some default configuration for MU-MIMO Advanced receiver.

[0045] Assuming that some default configuration may be known, another question is how to inform the UE when the default configuration no longer applies and how to return to such a default configuration assumption. One way to handle this may be to use explicit signaling to inform whether the default assumption is valid (in the same way as network-assisted signaling for CRS interference mitigation for overlapping LTE-NR spectrum), but this may not be the only approach.

[0046] A method is described herein for a network to signal to a UE supporting a MU-MIMO advanced receiver whether to apply a default or non-default assumption related to a co-scheduled UE of a target UE to support inter-user interference cancellation at the advanced UE receiver. In this case, the "default" assumption (true or false) is based on the validity of the following statements related to the co-scheduled UE of the target UE. Each statement is associated with a parameter configured by an RRC information element for MU-MIMO advanced receiver network assisted signaling ((a) to (c)):

[0047] (a) When PRG = 2 or 4, the precoding and resource allocation of the co-scheduled UE having the same DM-RS sequence as the target UE and in a different CDM group from the target UE are the same as the precoding and resource allocation in the PRG level grid configured to the target UE.

[0048] (b) Whether the DM-RS power boost configuration of all co-scheduled UEs having the same DM-RS sequence as the target UE is the same as that of the target UE.

[0049] (c) Whether the time domain resource allocation of PDSCH symbols for all co-scheduled UEs having the same DM-RS sequence as the target UE is the same as that of the target UE.

[0050] Since MU-MIMO advanced receiver functionality depends on the UE being configured to receive MU-MIMO DCI signaling a priori, there is no need to explicitly signal a default configuration for MU-MIMO advanced receiver network assisted signaling settings: upon being notified of the presence of the MU-MIMO DCI configuration via RRC signaling, the target UE applies the advanced receiver settings based on the default validity for the parameters associated with statements (a), (b), (c). The MU-MIMO advanced receiver network assisted signaling parameters with default settings / validity need not be limited to parameters associated with (a), (b) and (c), however: once the MU-MIMO DCI configuration is provided to the UE, additional parameters with default settings / validity known to the UE may also be specified.

[0051] After providing the MU-MIMO DCI configuration to the UE, the network may optionally signal to the target UE in an RRC information element for MU-MIMO advanced receiver network assisted configuration whether the UE should apply non-default settings / validity for any one or more of the parameters.

[0052] The network may also provide additional parameters within the same RRC information unit, which may or may not have a default setting / validity. For example, the network may notify the UE of the MCS table with the highest modulation order among all MCS tables configured for co-scheduled UEs with the same DM-RS sequence as the target UE. In this case, the network explicitly signals: the MCS table with the highest modulation order among all MCS tables configured for co-scheduled UEs with the same DM-RS sequence as the target UE. The MCS table is one of the following: a 1024QAM MCS table, a 256 QAM MCS table, or a 64QAM MCS table. If the network does not signal this parameter, the default assumption made by the UE is that any one of the three MCS tables (1024QAM, 256QAM, 64QAM) mentioned above is applicable.

[0053] The parameter associated with the MCS table with the highest modulation order may be signaled in the same MU-MIMO advanced receiver configuration as parameters (a), (b), (c). In this sense, this may be considered parameter (d). The default assumption for parameter (d) is not associated with a valid / invalid state / assumption, but rather: "The UE assumes that any one of the three MCS tables (1024QAM, 256QAM, 64QAM) may have the highest modulation order among all MCS tables configured for co-scheduled UEs. The non-default case for parameter (d) is that the network explicitly indicates which MCS table is the highest modulation order among all MCS tables configured for co-scheduled UEs.

[0054] Once the UE is configured with non-default settings / validity for any one or more advanced receiver parameters, the network resets the configuration for the parameter to the default setting / validity by signaling the RRC information element for the MU-MIMO advanced receiver network-assisted signaling configuration to the target UE and omitting the corresponding parameter from the RRC configuration. By omitting the parameter from the RRC information element, the network implicitly notifies the UE that the configuration for the parameter should be reset to the default setting.

[0055] Figure 2 The steps involved in configuring the default / non-default network assisted signaling settings for the MU-MIMO advanced receiver for the UE 110 based on RRC signaling are shown. Specifically, Figure 2 A signaling exchange between the UE 110 and a network, which may include a RAN node 170 and / or one or more network elements 190, is shown.

[0056] In step 1 (201), the UE is notified by the network of the configuration for MU-MIMO DCI. Based on the MU-MIMO DCI configuration, the UE may apply MU-MIMO advanced receiver settings based on network assisted signaling, and in step 2 (202), apply the default settings for parameters (a), (b), (c) associated with the network assisted signaling.

[0057] The concept in step 1 (201) and step 2 (202) is that after being informed of the MU-MIMO DCI configuration, the UE 110 will apply the default MU-MIMO advanced receiver settings (in which case no RRC-based network-assisted signaling is required to configure the advanced receiver). Only in subsequent steps, explicit RRC-based network-assisted signaling is required.

[0058] In step 3 (203), the network explicitly signals the non-default configuration to be used for parameters (a), (b), (c) via network-assisted signaling for MU-MIMO advanced receivers. In step 4 (204), the UE applies these (non-default) settings for parameters (a), (b), (c).

[0059] In step 5 (205), the network explicitly signals the non-default configuration to be used for parameter (c) through network-assisted signaling for the MU-MIMO advanced receiver; however, the network omits the configuration of parameters (a) and (b), implicitly notifying the UE to apply the default settings associated with parameters (a) and (b). In step 6 (206), the UE applies the default settings associated with parameters (a) and (b) and the non-default settings explicitly signaled for parameter (c).

[0060] In step 7 (207), the network sends an empty RRC information element for MU-MIMO advanced receiver network assistance signaling, which implicitly notifies the UE to apply the default settings associated with all parameters ((a), (b), (c)). In step 8 (208), the UE applies the default settings associated with all parameters ((a), (b), (c)).

[0061] The examples described herein may be standardized in 3GPP, such as 3GPP TS 38.331, and possibly 38.306 or 38.213; 3GPP Release 18 compliant UEs capable of utilizing MU-MIMO Advanced receivers and supporting cancellation of one or more co-scheduled UEs and gNBs supporting network assisted signaling configured for MU-MIMO Advanced receivers may implement the examples described herein. However, the examples described herein need not be limited to Rel-18, and the examples described herein may also be part of releases beyond 5G or 6G related to MU-MIMO Advanced receivers.

[0062] Figure 3 300 is an example apparatus 300 configured to implement the examples described herein, which may be implemented in hardware. The apparatus 300 includes at least one processor 302 (e.g., an FPGA and / or a CPU), one or more memories 304 including computer program code 305 having instructions to perform the methods described herein, wherein the at least one memory 304 and the computer program code 305 are configured to cause the apparatus 300 to implement circuit systems, processes, components, modules, or functions (implemented using a control module 306) using the at least one processor 302 to implement the examples described herein. The memory 304 may be a non-volatile memory, a transient memory, a volatile memory (e.g., a RAM), or a non-volatile memory (e.g., a ROM).

[0063] The optionally included Tx MU-MIMO receiver configuration 330 may implement aspects described herein related to transmission of MU-MIMO configuration signaling and transmission of MU-MIMO advanced receiver network assisted signaling. The optionally included Rx MU-MIMO receiver configuration 340 may implement aspects described herein related to reception of MU-MIMO configuration signaling and reception of MU-MIMO advanced receiver network assisted signaling. The optionally included Application MU-MIMO receiver configuration 350 may implement aspects described herein related to application of MU-MIMO configuration signaling and application of MU-MIMO advanced receiver network assisted signaling.

[0064] The device 300 includes a display and / or I / O interface 308, which includes user interface (UI) circuit systems and elements, which can be used to display aspects or states of the methods described herein (e.g., while one of the methods is being performed or at a subsequent time), or to receive input from a user, such as using a keypad, camera, touch screen, touch area, microphone, biometrics, one or more sensors, etc. The device 300 includes one or more communications, such as network (N / W) interfaces (I / F) 310. The communication I / F 310 can be wired and / or wireless, and communicate across the Internet / other network via any communication technology including through one or more links 324. The link 324 can be from Figure 1 Links 131 and / or 176. Figure 1 Links 131 and / or 176 may also be implemented using transceiver 316 and corresponding wireless link 326. Communication I / F 310 may include one or more transmitters or one or more receivers.

[0065] The transceiver 316 includes one or more transmitters 318 and one or more receivers 320. The transceiver 316 and / or the communication I / F 310 may include standard well-known components such as amplifiers, filters, frequency converters, (de)modulators and decoder / decoder circuits and one or more antennas, such as antenna 314 for communicating across a wireless link 326.

[0066] The control module 306 of the device 300 includes one or both of the parts 306-1 and / or 306-2 that can be implemented in a variety of ways. The control module 306 can be implemented in hardware as the control module 306-1, such as being implemented as a part of one or more processors 302. The control module 306-1 can also be implemented as an integrated circuit or implemented by other hardware such as a programmable gate array. In another example, the control module 306 can be implemented as a control module 306-2, which is implemented as a computer program code (with corresponding instructions) 305 and executed by one or more processors 302. For example, one or more memories 304 store instructions that, when executed by one or more processors 302, cause the device 300 to perform one or more operations as described herein. In addition, one or more processors 302, one or more memories 304, and example algorithms (e.g., as flow charts and / or signaling diagrams) that are decoded as instructions, programs, or codes are components for causing the execution of the operations described herein.

[0067] The apparatus 300 for implementing the functionality of the control 306 may be a UE 110, a RAN node 170 (e.g., a gNB), or one or more network elements 190 (e.g., a LMF 190). Thus, the processor 302 may correspond to the processor 120, the processor 152, and / or the processor 175, the memory 304 may correspond to one or more memories 125, one or more memories 155, and / or one or more memories 171, the computer program code 305 may correspond to the computer program code 123, the computer program code 153, and / or the computer program code 173, the control module 306 may correspond to the module 140-1, the module 140-2, the module 150-1, and / or the module 150-2, and the communication I / F 310 and / or the transceiver 316 may correspond to the transceiver 130, the antenna 128, the transceiver 160, the antenna 158, the N / WI / F 161, and / or the N / WI / F 180. Alternatively, apparatus 300 and its elements may not correspond to any of UE 110, RAN node 170, or network element 190 and their respective elements, as apparatus 300 may be part of a Self-Organizing / Optimizing Network (SON) node or other node (e.g., a node in the cloud).

[0068] The apparatus 300 may also be distributed throughout a network (eg, network 100 ), including within and between the apparatus 300 and any network elements (such as a network control element (NCE) 190 and / or RAN node 170 and / or UE 110 ).

[0069] like Figure 3As shown, interface 312 implements data communication and signaling between various items of device 300. For example, interface 312 can be one or more buses, such as address, data or control buses, and can include any interconnection mechanism, such as a series of lines on a motherboard or integrated circuit, optical fiber or other optical communication devices, etc. The computer program code (e.g., instructions) 305 including control 306 can include object-oriented software configured to pass data or messages between objects within computer program code 305. The computer program code (e.g., instructions) 305 including control 306 can include process, function or script code. Device 300 does not need to include each of the features mentioned, or can also include other features. The various components of device 300 can be at least partially located in a common housing 328 (e.g., the components can be located in housing 328), or subsets of the various components of device 300 can be at least partially located in different housings, and different housings can include housing 328.

[0070] Figure 4 Schematic diagrams of non-volatile memory media 400a (e.g., a computer / compact disk (CD) or digital versatile disk (DVD)) and 400b (e.g., a universal serial bus (USB) memory stick) and 400c (e.g., cloud storage for downloading instructions and / or parameters 402 or receiving emailed instructions and / or parameters 402) storing instructions and / or parameters 402 that, when executed by a processor, allow the processor to perform one or more steps of the methods described herein. The instructions and / or parameters 402 may represent non-transitory computer-readable media.

[0071] Figure 5 The present invention is an example method 500 based on the example embodiments described herein. At 510, the method includes receiving a configuration for a multi-user multi-input multi-output from a network. At 520, the method includes applying at least one default setting for at least one parameter for a multi-user multi-input multi-output advanced receiver based on the configuration for the multi-user multi-input multi-output. The method 500 may be performed using the UE 110 or the apparatus 300.

[0072] Figure 6 The present invention is an example method 600 based on example embodiments described herein. At 610, the method includes determining a configuration for a multi-user multi-input multi-output. At 620, the method includes sending the configuration for the multi-user multi-input multi-output to a user equipment. At 630, the method includes wherein the configuration for the multi-user multi-input multi-output causes the user equipment to apply at least one default setting for at least one parameter for a multi-user multi-input multi-output advanced receiver. The method 600 may be performed using the RAN node 170, one or more network elements 190, or the apparatus 300.

[0073] The following examples are provided and described in this article.

[0074] Example 1. An apparatus comprising: at least one processor; and at least one memory storing instructions, which, when executed by the at least one processor, cause the apparatus to at least: receive a configuration for a multi-user multi-input multi-output from a network; and based on the configuration for the multi-user multi-input multi-output, apply at least one default setting for at least one parameter for a multi-user multi-input multi-output advanced receiver.

[0075] Example 2. The apparatus of example 1, wherein the instructions, when executed by at least one processor, cause the apparatus to at least: receive a configuration for at least one parameter for a multi-user multiple-input multiple-output advanced receiver from a network.

[0076] Example 3. An apparatus according to Example 2, wherein the instructions, when executed by at least one processor, cause the apparatus to at least: receive from a network an empty information unit associated with a configuration of at least one parameter for a multi-user multiple-input multiple-output advanced receiver; in response to receiving the empty information unit associated with the configuration of at least one parameter for the multi-user multiple-input multiple-output advanced receiver, apply at least one default setting for at least one parameter for the multi-user multiple-input multiple-output advanced receiver.

[0077] Example 4. An apparatus according to any one of Examples 2 to 3, wherein the instructions, when executed by at least one processor, cause the apparatus to at least: determine to apply at least one non-default setting to one or more of at least one parameter for the multi-user multi-input multi-output advanced receiver in response to one or more of the at least one parameter being present within a configuration for at least one parameter for the multi-user multi-input multi-output advanced receiver.

[0078] Example 5. An apparatus according to any one of Examples 2 to 4, wherein the instructions, when executed by at least one processor, cause the apparatus to at least: determine to apply at least one default setting for one or more of at least one parameter for the multi-user multi-input multi-output advanced receiver in response to one or more of at least one parameter being omitted from the configuration of at least one parameter for the multi-user multi-input multi-output advanced receiver.

[0079] Example 6. The apparatus of any one of Examples 2 to 5, wherein the configuration for at least one parameter for the multi-user multiple-input multiple-output advanced receiver is received from a network via radio resource control signaling.

[0080] Example 7. An apparatus according to any one of Examples 2 to 6, wherein the instructions, when executed by at least one processor, cause the apparatus to at least: receive signaling for configuration of at least one parameter for a multi-user multiple-input multiple-output advanced receiver from a network; wherein the signaling for configuration of at least one parameter for the multi-user multiple-input multiple-output advanced receiver includes a modulation and coding scheme table, the modulation and coding scheme table having a highest modulation order higher than at least one modulation order of the corresponding at least one modulation and coding scheme table configured for the corresponding at least one co-scheduled user equipment, wherein the demodulation reference signal sequence of the at least one co-scheduled user equipment is the same as the demodulation reference signal sequence of the apparatus; wherein the at least one modulation and coding scheme table includes one of the following: a 1024 orthogonal amplitude modulation modulation and coding scheme table, or a 256 orthogonal amplitude modulation modulation and coding scheme table, or a 64 orthogonal amplitude modulation modulation and coding scheme table; and apply a non-default setting for at least one parameter for the multi-user multiple-input multiple-output advanced receiver, wherein the non-default setting is based on the modulation and coding scheme table, the modulation and coding scheme table having a highest modulation order higher than at least one modulation order of the corresponding at least one modulation and coding scheme table configured for the corresponding at least one co-scheduled user equipment.

[0081] Example 8. An apparatus according to any one of Examples 2 to 7, wherein the instructions, when executed by at least one processor, cause the apparatus to at least: in response to determining that signaling for configuration of at least one parameter for a multi-user multiple-input multiple-output advanced receiver is received without requiring a modulation and coding scheme table having a highest modulation order higher than at least one modulation order of the corresponding at least one modulation and coding scheme table configured for the corresponding at least one co-scheduled user equipment, apply a default assumption for at least one parameter, the default assumption being that any one of the three modulation and coding scheme tables has a highest modulation order higher than at least one modulation order of the corresponding at least one modulation and coding scheme table configured for the corresponding at least one co-scheduled user equipment; wherein the three modulation and coding scheme tables include a 1024 quadrature amplitude modulation modulation and coding scheme table, a 256 quadrature amplitude modulation modulation and coding scheme table, and a 64 quadrature amplitude modulation modulation and coding scheme table.

[0082] Example 9. The apparatus of any one of Examples 2 to 8, wherein the configuration for at least one parameter for the multi-user multiple-input multiple-output advanced receiver is received from the network via explicit radio resource control based network assisted signaling.

[0083] Example 10. The apparatus of any one of Examples 1 to 9, wherein at least one parameter is associated with a valid state or a valid hypothesis.

[0084] Example 11. The apparatus of any of Examples 1 to 10, wherein at least one parameter is associated with an invalid state or an invalid hypothesis.

[0085] Example 12. An apparatus according to any one of Examples 1 to 11, wherein at least one parameter is associated with the following: when there are two or four consecutive resource blocks associated with a precoding resource block group, in a precoding resource block group level grid configured to the apparatus, the precoding and resource allocation of at least one co-scheduled user equipment are the same as the precoding and resource allocation of the apparatus, wherein the demodulation reference signal sequence of at least one co-scheduled user equipment is the same as the demodulation reference signal sequence of the apparatus, and wherein at least one co-scheduled user equipment is in a first code division multiplexing group and the apparatus is in a second code division multiplexing group different from the first code division multiplexing group.

[0086] Example 13. An apparatus according to any one of Examples 1 to 12, wherein at least one parameter is associated with the following: at least one demodulation reference signal power boost configuration of at least one corresponding co-scheduled user equipment is the same as the demodulation reference signal power boost configuration of the apparatus, and wherein the demodulation reference signal sequence of at least one co-scheduled user equipment is the same as the demodulation reference signal sequence of the apparatus.

[0087] Example 14. An apparatus according to any one of Examples 1 to 13, wherein at least one parameter is associated with the following: at least one time domain resource allocation for a physical downlink shared channel symbol of at least one corresponding co-scheduled user equipment is the same as the time domain resource allocation for the physical downlink shared channel symbol of the apparatus, wherein the demodulation reference signal sequence of at least one co-scheduled user equipment is the same as the demodulation reference signal sequence of the apparatus.

[0088] Example 15. The apparatus of any of Examples 1 to 14, wherein after receiving the configuration for the multi-user multiple-input multiple-output, at least one default setting for at least one parameter for the multi-user multiple-input multiple-output advanced receiver is known to the apparatus.

[0089] Example 16. An apparatus according to any one of Examples 1 to 15, wherein in response to receiving a configuration for a multi-user multiple-input multiple-output, at least one default setting for at least one parameter for the multi-user multiple-input multiple-output advanced receiver is applied without receiving or using radio resource control-based network assisted signaling for configuration of the multi-user multiple-input multiple-output advanced receiver.

[0090] Example 17. An apparatus according to any one of Examples 1 to 16, wherein the apparatus comprises a user equipment.

[0091] Example 18. An apparatus comprising: at least one processor; and at least one memory storing instructions, which, when executed by the at least one processor, cause the apparatus to at least: determine a configuration for a multi-user multi-input multi-output; and send the configuration for the multi-user multi-input multi-output to a user device; wherein the configuration for the multi-user multi-input multi-output causes the user device to apply at least one default setting for at least one parameter for a multi-user multi-input multi-output advanced receiver.

[0092] Example 19. The apparatus of Example 18, wherein the instructions, when executed by at least one processor, cause the apparatus to at least: send a configuration for at least one parameter for a multi-user multiple-input multiple-output advanced receiver to a user equipment.

[0093] Example 20. An apparatus according to Example 19, wherein the instructions, when executed by at least one processor, cause the apparatus to at least: send an empty information unit associated with the configuration of at least one parameter for a multi-user multi-input multi-output advanced receiver to a user equipment; and wherein the empty information unit associated with the configuration of at least one parameter for the multi-user multi-input multi-output advanced receiver is configured to cause the user equipment to apply at least one default setting for at least one parameter for the multi-user multi-input multi-output advanced receiver.

[0094] Example 21. An apparatus according to any one of Examples 19 to 20, wherein when one or more of the at least one parameter is present in the configuration of at least one parameter for the multi-user multi-input multi-output advanced receiver, the configuration of at least one parameter for the multi-user multi-input multi-output advanced receiver causes the user device to apply at least one non-default setting for one or more of the at least one parameter for the multi-user multi-input multi-output advanced receiver.

[0095] Example 22. An apparatus according to any one of Examples 19 to 21, wherein when one or more of the at least one parameter are omitted from the configuration of at least one parameter for the multi-user multi-input multi-output advanced receiver, the configuration of at least one parameter for the multi-user multi-input multi-output advanced receiver causes the user device to apply at least one default setting for one or more of the at least one parameter for the multi-user multi-input multi-output advanced receiver.

[0096] Example 23. An apparatus according to any of Examples 19 to 22, wherein the configuration of at least one parameter for the multi-user multiple-input multiple-output advanced receiver is sent to the user equipment via radio resource control signaling.

[0097] Example 24. An apparatus according to any one of Examples 19 to 23, wherein the instructions, when executed by at least one processor, cause the apparatus to at least: send signaling for configuration of at least one parameter for a multi-user multiple-input multiple-output advanced receiver to a user equipment; wherein the signaling for configuration of at least one parameter for the multi-user multiple-input multiple-output advanced receiver includes a modulation and coding scheme table, the modulation and coding scheme table having a highest modulation order higher than at least one modulation order of the corresponding at least one modulation and coding scheme table configured to the corresponding at least one co-scheduled user equipment, wherein a demodulation reference signal sequence of the at least one co-scheduled user equipment is identical to a demodulation reference signal sequence of the user equipment; The present invention relates to a method for transmitting the signaling signal of a plurality of modulation and coding schemes of a plurality of signals to a user equipment. The method comprises: providing a plurality of modulation and coding schemes for transmitting the signaling ...

[0098] Example 25. An apparatus according to any one of Examples 19 to 24, wherein the instructions, when executed by at least one processor, cause the apparatus to at least: send signaling for configuration of at least one parameter for a multi-user multiple-input multiple-output advanced receiver to a user equipment without requiring a modulation and coding scheme table, the modulation and coding scheme table having a highest modulation order higher than at least one modulation order of the corresponding at least one modulation and coding scheme table configured to the corresponding at least one co-scheduled user equipment; wherein the signaling for configuration of at least one parameter for the multi-user multiple-input multiple-output advanced receiver without requiring a modulation and coding scheme table, the modulation and coding scheme table having a highest modulation order higher than the modulation order of the corresponding at least one modulation and coding scheme table configured to the corresponding at least one co-scheduled user equipment A highest modulation order higher than at least one modulation order of at least one modulation and coding scheme table of corresponding at least one co-scheduled user equipment is given to the user equipment, so that the user equipment applies a default assumption, which default assumption is that any one of the three modulation and coding scheme tables has a highest modulation order higher than at least one modulation order of the corresponding at least one modulation and coding scheme table configured for the corresponding at least one co-scheduled user equipment; wherein the three modulation and coding scheme tables include a 1024 orthogonal amplitude modulation modulation and coding scheme table, a 256 orthogonal amplitude modulation modulation and coding scheme table, and a 64 orthogonal amplitude modulation modulation and coding scheme table.

[0099] Example 26. An apparatus according to any of Examples 19 to 25, wherein configuration of at least one parameter for a multi-user multiple-input multiple-output advanced receiver is sent to the user equipment via explicit radio resource control based network assisted signaling.

[0100] Example 27. An apparatus according to any of Examples 18 to 26, wherein at least one parameter is associated with a valid state or a valid hypothesis.

[0101] Example 28. An apparatus according to any of Examples 18 to 27, wherein at least one parameter is associated with an invalid state or an invalid hypothesis.

[0102] Example 29. An apparatus according to any one of Examples 18 to 28, wherein at least one parameter is associated with the following: when there are two or four consecutive resource blocks associated with a precoding resource block group, in a precoding resource block group level grid configured to the user equipment, the precoding and resource allocation of at least one co-scheduled user equipment are the same as the precoding and resource allocation of the user equipment, wherein the demodulation reference signal sequence of at least one co-scheduled user equipment is the same as the demodulation reference signal sequence of the user equipment, and wherein at least one co-scheduled user equipment is in a first code division multiplexing group, and the user equipment is in a second code division multiplexing group different from the first code division multiplexing group.

[0103] Example 30. An apparatus according to any one of Examples 18 to 29, wherein at least one parameter is associated with: at least one demodulation reference signal power boost configuration of the corresponding at least one co-scheduled user equipment is the same as the demodulation reference signal power boost configuration of the user equipment, and wherein the demodulation reference signal sequence of at least one co-scheduled user equipment is the same as the demodulation reference signal sequence of the user equipment.

[0104] Example 31. An apparatus according to any one of Examples 18 to 30, wherein at least one parameter is associated with the following: at least one time domain resource allocation for a physical downlink shared channel symbol of a corresponding at least one co-scheduled user equipment is the same as the time domain resource allocation for the physical downlink shared channel symbol of the user equipment, wherein the demodulation reference signal sequence of at least one co-scheduled user equipment is the same as the demodulation reference signal sequence of the user equipment.

[0105] Example 32. An apparatus according to any one of Examples 18 to 31, wherein after transmission of a configuration for a multi-user multiple-input multiple-output, at least one default setting for at least one parameter for a multi-user multiple-input multiple-output advanced receiver is known to the user equipment.

[0106] Example 33. An apparatus according to any one of Examples 18 to 32, wherein transmission of a configuration for a multi-user multiple-input multiple-output causes a user equipment to apply at least one default setting for at least one parameter for a multi-user multiple-input multiple-output advanced receiver without transmitting or using radio resource control-based network assisted signaling for the configuration of the multi-user multiple-input multiple-output advanced receiver.

[0107] Example 34. An apparatus according to any of Examples 18 to 33, wherein the apparatus comprises a radio access network node.

[0108] Example 35. A method comprising: receiving a configuration for a multi-user multiple input multiple output from a network; and applying at least one default setting for at least one parameter for a multi-user multiple input multiple output advanced receiver based on the configuration for the multi-user multiple input multiple output.

[0109] Example 36. A method comprising: determining a configuration for a multi-user multi-input multi-output; and sending the configuration for the multi-user multi-input multi-output to a user device; wherein the configuration for the multi-user multi-input multi-output causes the user device to apply at least one default setting for at least one parameter for a multi-user multi-input multi-output advanced receiver.

[0110] Example 37. An apparatus comprising: a component for receiving a configuration for a multi-user multiple input multiple output from a network; and a component for applying at least one default setting for at least one parameter for a multi-user multiple input multiple output advanced receiver based on the configuration for the multi-user multiple input multiple output.

[0111] Example 38. An apparatus comprising: a component for determining a configuration for a multi-user multi-input multi-output; and a component for sending the configuration for the multi-user multi-input multi-output to a user device; wherein the configuration for the multi-user multi-input multi-output causes the user device to apply at least one default setting for at least one parameter for a multi-user multi-input multi-output advanced receiver.

[0112] Example 39. A non-transitory computer-readable medium includes program instructions stored thereon, the program instructions being used to perform at least the following operations: receiving a configuration for a multi-user multi-input multi-output from a network; and based on the configuration for the multi-user multi-input multi-output, applying at least one default setting for at least one parameter for a multi-user multi-input multi-output advanced receiver.

[0113] Example 40. A non-transitory computer-readable medium includes program instructions stored thereon, the program instructions being used to perform at least the following operations: determining a configuration for a multi-user multi-input multi-output; and sending the configuration for the multi-user multi-input multi-output to a user device; wherein the configuration for the multi-user multi-input multi-output causes the user device to apply at least one default setting for at least one parameter for a multi-user multi-input multi-output advanced receiver.

[0114] References to "computers", "processors", etc. should be understood to cover not only computers with different architectures, such as single / multi-processor architectures and sequential or parallel architectures, but also special-purpose circuits such as field programmable gate arrays (FPGAs), application-specific circuits (ASICs), signal processing devices, and other processing circuit systems. References to computer programs, instructions, code, etc. should be understood to cover software for programmable processors or firmware, such as, for example, programmable content of hardware devices, whether instructions for a processor, or configuration settings for a fixed-function device, gate array, or programmable logic device, etc.

[0115] The memory as described herein can be implemented using any suitable data storage technology, such as semiconductor-based memory devices, flash memory, magnetic memory devices and systems, optical memory devices and systems, non-volatile memory, transient memory, fixed memory, and removable memory. The memory can include a database for storing data.

[0116] As used herein, the term "circuitry" may refer to the following: (a) hardware circuit implementations, such as implementations in analog and / or digital circuitry, and (b) combinations of circuitry and software (and / or firmware), such as (as applicable): (i) a combination of processors or (ii) portions of processors / software, including a digital signal processor, software, and memory that work together to enable the device to perform various functions; and (c) circuitry, such as a microprocessor or portion of a microprocessor, that requires software or firmware for operation, even if the software or firmware is not physically present. As another example, as used herein, the term "circuitry" would also cover an implementation of only a processor (or multiple processors) or portion of a processor and its (or their) accompanying software and / or firmware. The term "circuitry" would also cover, for example and if applicable to the particular element, a baseband integrated circuit or application processor integrated circuit for a mobile phone or a similar integrated circuit in a server, cellular network device, or another network device.

[0117] It should be understood that the above description is illustrative only. Various alternatives and modifications may be devised by those skilled in the art. For example, the features described in the various dependent claims may be combined with each other in any suitable combination. In addition, the features from the different example embodiments described above may be selectively combined into new example embodiments. Therefore, this specification is intended to cover all such alternatives, modifications and variations that fall within the scope of the appended claims.

[0118] The following acronyms and abbreviations that may be found in the specification and / or drawings are given below (abbreviations and acronyms may be appended / combined with each other or with other characters using, for example, dashes, hyphens, slashes, letters or numbers, and may be case-insensitive): 3GPP Third Generation Partnership Project 4G Fourth Generation 5G Fifth Generation 5GC 5G Core Network 6G Sixth Generation AMF Access and Mobility Management Function ASIC Application-Specific Integrated Circuit CD Compact / Computer Disk CDM Code Division Multiple Access CPU Central Processing Unit CRS Cell-specific reference signal CU Central Unit or Centralized Unit DCI Downlink Control Information DL Downlink DMRS,DM-RS Demodulation Reference Signal DSP Digital Signal Processor DU Distributed Unit DVD Digital Versatile Disc eNB Evolved Node B (e.g., LTE base station) EN-DC E-UTRAN New Radio - Dual Connectivity en-gNB provides the UE with the node where the NR user plane and control plane protocols terminate, and acts as a secondary node in EN-DC E-UTRA Evolved UMTS Terrestrial Radio Access, also known as LTE radio access technology E-UTRAN E-UTRA Network F1 Interface between CU and DU FPGA Field Programmable Gate Array gNB is a base station for 5G / NR, that is, a node that provides NR user plane and control plane protocol termination to UE and is connected to 5GC via NG interface. IAB Integrated Access and Backhaul I / F Interface I / O Input / Output LMF Location Management Function LTE Long Term Evolution (4G) MAC Medium Access Control MCS Modulation and Coding Scheme MME Mobility Management Entity MRO mobility robustness optimization MU-MIMO Multi-User Multiple Input Multiple Output NCE Network Control Unit Neighborhood ng or NG new generation ng-eNB Next Generation eNB NG-RAN Next Generation Radio Access Network NR New Radio N / W Network OAM Operations, Administration and Maintenance PDA Personal Digital Assistant PDCP Packet Data Convergence Protocol PDSCH Physical Downlink Shared Channel PHY Physical Layer PRG Precoding resource block group QAM Quadrature Amplitude Modulation R4 RAN file (e.g. R4-2309895) RAM Random Access Memory RAN Radio Access Network RAN1 RAN Workgroup 1, or Radio Layer 1 RAN2 RAN Working Group 2 RAN4 RAN Working Group 4 Rel version RLC Radio Link Control ROM Read Only Memory RP RAN Plenary Meeting RRC Radio Resource Control RU Radio Unit Rx Receive, or Receiver SDAP Service Data Adaptation Protocol SGW Service Gateway SMF session management functions SON self-organizing / self-optimizing network TRP Transmit Receiving Point TS Technical Specifications Tx Send, or transmitter, or transmit UAV Unmanned Aerial Vehicle UE User Equipment (e.g. wireless, usually mobile) UI UMTS Universal Mobile Telecommunications System UPF User Plane Function USB Universal Serial Bus WI Work Items X2 Network interface between RAN nodes and between RAN and core network Xn Network between NG-RAN nodes

Claims

1. A device for communication, comprising: at least one processor; as well as at least one memory storing instructions, which, when executed by the at least one processor, cause the apparatus to at least: receiving a configuration for a multi-user multiple-input multiple-output from a network; as well as Based on said configuration for the multi-user multiple-input multiple-output, at least one default setting is applied for at least one parameter for the multi-user multiple-input multiple-output advanced receiver.

2. The apparatus of claim 1 , wherein the instructions, when executed by the at least one processor, cause the apparatus to at least: A configuration for the at least one parameter for the multi-user multiple-input multiple-output advanced receiver is received from the network.

3. The apparatus of claim 2, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least: receiving from the network a null information element associated with the configuration for the at least one parameter for the multi-user multiple-input multiple-output advanced receiver; In response to receiving the null information element associated with the configuration for the at least one parameter for the multi-user multiple-input multiple-output advanced receiver, applying the at least one default setting for the at least one parameter for the multi-user multiple-input multiple-output advanced receiver.

4. The apparatus of claim 2, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least: In response to one or more of the at least one parameter being present within the configuration for the at least one parameter for the multi-user multiple-input multiple-output advanced receiver, it is determined to apply at least one non-default setting for the one or more of the at least one parameter for the multi-user multiple-input multiple-output advanced receiver.

5. The apparatus of claim 2 or 4, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least: In response to one or more of the at least one parameter being omitted from the configuration for the at least one parameter for the multi-user multiple-input multiple-output advanced receiver, determining to apply the at least one default setting for the one or more of the at least one parameter for the multi-user multiple-input multiple-output advanced receiver.

6. The apparatus according to any one of claims 2 to 4, wherein the configuration for the at least one parameter for the multi-user multiple-input multiple-output advanced receiver is received from the network via radio resource control signaling.

7. The apparatus according to any one of claims 2 to 4, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least: receiving signaling from the network for the configuration of the at least one parameter for a multi-user multiple-input multiple-output advanced receiver; wherein said signaling for said configuration of said at least one parameter for said multi-user multiple-input multiple-output advanced receiver comprises a table of modulation and coding schemes having a highest modulation order higher than at least one modulation order of a corresponding at least one modulation and coding scheme table configured to a corresponding at least one co-scheduled user equipment, wherein a demodulation reference signal sequence of said at least one co-scheduled user equipment is the same as a demodulation reference signal sequence of said apparatus; wherein the at least one modulation and coding scheme table comprises one of the following: a 1024 quadrature amplitude modulation modulation and coding scheme table, or a 256 quadrature amplitude modulation modulation and coding scheme table, or a 64 quadrature amplitude modulation modulation and coding scheme table; as well as A non-default setting is applied to at least one parameter for the multi-user multiple-input multiple-output advanced receiver, wherein the non-default setting is based on the modulation and coding scheme table, the modulation and coding scheme table having the highest modulation order higher than the at least one modulation order of the corresponding at least one modulation and coding scheme table configured for the corresponding at least one co-scheduled user equipment.

8. The apparatus of any one of claims 2 to 4, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least: responsive to determining that signaling for said configuration of said at least one parameter for said multi-user multiple-input multiple-output advanced receiver is received without requiring a modulation and coding scheme table having a highest modulation order higher than at least one modulation order of a corresponding at least one modulation and coding scheme table configured to a corresponding at least one co-scheduled user equipment, applying a default assumption for said at least one parameter, said default assumption being that any one of three modulation and coding scheme tables has said highest modulation order higher than said at least one modulation order of the corresponding at least one modulation and coding scheme table configured to a corresponding at least one co-scheduled user equipment; The three modulation and coding scheme tables include a 1024 quadrature amplitude modulation modulation and coding scheme table, a 256 quadrature amplitude modulation modulation and coding scheme table, and a 64 quadrature amplitude modulation modulation and coding scheme table.

9. The apparatus according to any one of claims 2 to 4, wherein the configuration for the at least one parameter for the multi-user multiple-input multiple-output advanced receiver is received from the network via explicit radio resource control based network assisted signaling.

10. The apparatus according to any one of claims 1 to 4, wherein the at least one parameter is associated with a valid state or a valid hypothesis.

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