WO2025160963A1 - Information processing method and apparatus, and communication system - Google Patents

Abstract

Provided in the embodiments of the present application are an information processing method and apparatus, and a communication system. The information processing method comprises: a terminal device receiving configuration information from a network device, wherein the configuration information is used for configuring a first transmission mode; and in the first transmission mode, the terminal device assuming that a first target signal is quasi-co-located with a first reference signal of at least one transmission configuration indication state.

Description

Information processing method, device and communication system Technical Field

The embodiments of the present application relate to the field of communication technologies.

Background Art

In the new radio (NR) system, users can measure the current channel according to the channel state information (CSI) resource settings and channel state information reporting settings configured on the base station side, and report feedback through the uplink control information (UCI) carrying CSI in the uplink channel (such as the physical uplink control channel (PUCCH) and the physical uplink shared channel (PUSCH)).

Multiple-transmission reception point (M-TRP) coordinated transmission is a key technology in NR systems for improving cell-edge throughput and providing more balanced quality of service for serving cells. M-TRP transmission schemes can be broadly categorized into two types: C-JT (coherent joint transmission) and NC-JT (non-coherent joint transmission).

It should be noted that the above introduction to the technical background is merely intended to provide a clear and complete description of the technical solutions of this application and facilitate understanding by those skilled in the art. Simply because these solutions are described in the background technology section of this application, it should not be assumed that the above technical solutions are well known to those skilled in the art.

Summary of the Invention

The inventors discovered that: in the existing transmission scheme, taking the C-JT scheme as an example, the scheme only considers the transmission of data and/or reference signals under ideal scenarios (for example, ideal backhaul, ideal synchronization, etc.). However, in real scenarios, the geographical locations of different transmission points lead to large differences in the delay transmission characteristics and frequency deviation characteristics of different transmission points, which in turn leads to the fact that when the channels of different signals are superimposed according to different delays and frequency deviations, the signals cannot achieve complete synchronous transmission and cannot achieve ideal coherent transmission. In addition, the non-ideal backhaul caused by the radio frequency units of different transmission points will also cause delays and asynchrony in the backhaul between different transmission points and the central processing unit (CU). This leads to a decrease in data transmission performance and a decrease in the throughput of single users and the entire network.

In response to at least one of the above problems or other similar problems, embodiments of the present application provide an information processing method, apparatus, and communication system.

According to one aspect of an embodiment of the present application, there is provided an information processing apparatus configured in a terminal device, the apparatus comprising: a receiving unit, which receives configuration information from a network device, wherein the configuration information is used to configure a first transmission mode; and a processing unit, which, in the first transmission mode, assumes that a first target signal is quasi-co-located with a first reference signal indicating a state of at least one transmission configuration.

According to another aspect of an embodiment of the present application, an information processing method is provided, which is applied to a terminal device, and the method includes: the terminal device receives configuration information from a network device, and the configuration information is used to configure a first transmission mode. In the first transmission mode, the terminal device assumes that the first target signal is quasi-co-located with a first reference signal indicating a state of at least one transmission configuration.

According to another aspect of an embodiment of the present application, there is provided an information processing apparatus configured in a network device, the apparatus comprising: a sending unit, which sends configuration information to a terminal device, the configuration information being used to configure a first transmission mode.

According to another aspect of an embodiment of the present application, there is provided an information processing method, which is applied to a network device. The method includes: sending configuration information to a terminal device, where the configuration information is used to configure a first transmission mode.

According to another aspect of an embodiment of the present application, a communication system is provided, comprising a network device and a terminal device, wherein the network device sends configuration information to the terminal device, the configuration information being used to configure a first transmission mode; the terminal device receives the configuration information, and in the first transmission mode, it is assumed that a first target signal is quasi-co-located with a first reference signal indicating a state of at least one transmission configuration.

One of the beneficial effects of the embodiments of the present application is that: in the first transmission mode, the UE assumes that the first target signal is quasi-co-located with the first reference signal of at least one transmission configuration indication state. Thus, when the network device pre-processes (pre-compensates) the delay and/or frequency deviation of the first target signal, the UE can accurately receive the first target signal, thereby improving transmission efficiency, enhancing data transmission performance, and increasing the overall network (and the terminal device) throughput.

With reference to the following description and accompanying drawings, specific embodiments of the present application are disclosed in detail, indicating the manner in which the principles of the present application can be employed. It should be understood that the embodiments of the present application are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present application include many variations, modifications and equivalents.

Features described and/or illustrated with respect to one embodiment may be implemented in the same or similar manner in one or more embodiments. The present invention may be used in other embodiments, combined with features of other embodiments, or replace features of other embodiments.

It should be emphasized that the term "include/comprising" when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components.

BRIEF DESCRIPTION OF THE DRAWINGS

The elements and features described in one figure or one embodiment of the present application can be combined with the elements and features shown in one or more other figures or embodiments. In addition, in the accompanying drawings, similar reference numerals represent corresponding parts in several figures and can be used to indicate corresponding parts used in more than one embodiment.

FIG1 is a schematic diagram of a communication system according to an embodiment of the present application;

FIG2 is a schematic diagram of a transmission scheme;

FIG3 is another schematic diagram of a transmission scheme;

FIG4 is a schematic diagram of an information processing method according to an embodiment of the present application;

FIG5 is a schematic diagram of an information processing device according to an embodiment of the present application;

FIG6 is a schematic diagram of an information processing method according to an embodiment of the present application;

FIG7 is a schematic diagram of an information processing device according to an embodiment of the present application;

FIG8 is a schematic diagram of a network device according to an embodiment of the present application;

FIG9 is a schematic diagram of a terminal device according to an embodiment of the present application.

DETAILED DESCRIPTION

The above and other features of the present application will become apparent through the following description with reference to the accompanying drawings. In the description and the accompanying drawings, specific embodiments of the present application are disclosed in detail, which illustrate some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations and equivalents that fall within the scope of the appended claims.

In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements from the name, but do not indicate the spatial arrangement or temporal order of these elements, and these elements should not be limited by these terms. The term "and/or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having", etc. refer to the presence of the stated features, elements, components or components, but do not exclude the presence or addition of one or more other features, elements, components or components.

In the embodiments of this application, the singular forms "a," "the," etc. include plural forms and should be broadly understood to mean "a" or "a type" rather than being limited to "one." Furthermore, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. Furthermore, the term "according to" should be understood to mean "at least in part based on...", and the term "based on" should be understood to mean "at least in part based on...", unless the context clearly indicates otherwise.

In the embodiments of the present application, the term "communication network" or "wireless communication network" may refer to a network that complies with any of the following communication standards, such as Long Term Evolution (LTE), enhanced Long Term Evolution (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed Packet Access (HSPA), etc.

Furthermore, communication between devices in the communication system may be carried out according to communication protocols of any stage, such as but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G, New Radio (NR), 6G, etc., and/or other communication protocols currently known or to be developed in the future.

In the embodiments of the present application, the term "network device" refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device. Network devices may include, but are not limited to, the following devices: base station (BS), access point (AP), transmission reception point (TRP), transmission point (TP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

Base stations may include, but are not limited to, NodeB (NB), evolved NodeB (eNodeB or eNB), 5G base stations (gNB), IAB hosts, and more. They may also include remote radio heads (RRHs), remote radio units (RRUs), relays, or low-power nodes (e.g., femto, pico, etc.). The term "base station" may include some or all of their functions, and each base station may provide communication coverage for a specific geographic area. The term "cell" may refer to a base station and/or its coverage area, depending on the context in which the term is used.

In the embodiments of the present application, the term "user equipment" (UE) refers to, for example, a device that accesses a communication network through a network device and receives network services, and may also be referred to as "terminal equipment" (TE). Terminal equipment may be fixed or mobile, and may also be referred to as a mobile station (MS), terminal, user, subscriber station (SS), access terminal (AT), station, mobile terminal (MT), etc.

Terminal devices may include but are not limited to the following devices: cellular phones, personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, cordless phones, smart phones, smart watches, digital cameras, etc.

For another example, in scenarios such as the Internet of Things (IoT), the terminal device can also be a machine or device for monitoring or measurement, including but not limited to: machine type communication (MTC) terminals, vehicle-mounted communication terminals, device-to-device (D2D) terminals, machine-to-machine (M2M) terminals, and the like.

In addition, the term "network side" or "network device side" refers to one side of the network, which can be a base station or one or more network devices as described above. The term "user side" or "terminal side" or "terminal device side" refers to the user or terminal side, which can be a UE or one or more terminal devices as described above. Unless otherwise specified herein, "device" can refer to either network equipment or terminal equipment.

In the following description, the terms "uplink control signal" and "uplink control information (UCI)" or "physical uplink control channel (PUCCH)" are interchangeable, and the terms "uplink data signal" and "uplink data information" or "physical uplink shared channel (PUSCH)" are interchangeable to avoid confusion.

The terms "downlink control signal" and "downlink control information (DCI)" or "physical downlink control channel (PDCCH)" are interchangeable, and the terms "downlink data signal" and "downlink data information" or "physical downlink shared channel (PDSCH)" are interchangeable.

In addition, the uplink signal may include an uplink data signal and/or an uplink control signal and/or a PRACH and/or an SRS (sounding reference signal), etc., which may also be referred to as an uplink transmission (UL transmission) or an uplink information or an uplink channel. Sending/receiving an uplink transmission on an uplink resource may be understood as sending/receiving the uplink transmission using the uplink resource. The downlink signal may include a downlink data signal and/or a downlink control signal and/or a synchronization signal (SS, such as PSS/SSS) and/or a broadcast channel (PBCH) and/or an SSB (SS/PBCH block, including PSS, SSS and PBCH and its DMRS) and/or a CSI-RS, etc., which may also be referred to as a downlink transmission (DL transmission) or a downlink information or a downlink channel. Sending/receiving a downlink transmission on a downlink resource may be understood as sending/receiving the downlink transmission using the downlink resource. In the embodiment of the present application, the high-layer signaling may be, for example, radio resource control (RRC) signaling; RRC signaling may include, for example, RRC messages, such as broadcast/public RRC messages/signaling (e.g., master information block (MIB), system information), Dedicated RRC message/signaling; or RRC information element (RRC information element, RRC IE); or an information field included in an RRC message or RRC information element (or an information field included in an information field). High-layer signaling may also be, for example, Medium Access Control (MAC) signaling; or MAC control element (MAC control element, MAC CE). However, the present application is not limited thereto.

In the embodiments of the present application, a plurality refers to at least two, or two or more.

In the embodiments of the present application, predefined means specified in the protocol or determined according to the rules specified in the protocol, and no additional configuration is required. Configuration/indication refers to direct or indirect configuration/indication by the network device through high-layer signaling and/or physical layer signaling. Configuration/indication can be achieved by introducing high-layer parameters in high-layer signaling, and high-layer parameters refer to information fields (fields) and/or information elements/information units/information elements (IEs) in high-layer signaling. Physical layer signaling refers to, for example, control information (DCI) carried by the physical downlink control channel or control information carried by the sequence, but is not limited thereto.

For ease of description, the following description will be made using a base station as an example of an access network device. In the following description, "if ...", "under ..." and "when ..." can be used interchangeably without causing confusion.

The following describes the scenarios of the embodiments of the present application through examples, but the present application is not limited thereto.

FIG1 is a schematic diagram of a communication system according to an embodiment of the present application, schematically illustrating a situation using a terminal device and a network device as an example. As shown in FIG1 , a communication system 100 may include a network device 101 and terminal devices 102 and 103. For simplicity, FIG1 illustrates only two terminal devices and one network device as an example, but the embodiments of the present application are not limited thereto.

In the embodiment of the present application, existing services or future services can be transmitted between the network device 101 and the terminal devices 102 and 103. For example, these services may include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable and low-latency communication (URLLC), etc.

The terminal device 102 may send data to the network device 101, for example, using an authorized or unauthorized transmission mode. The network device 101 may receive data sent by one or more terminal devices 102 and provide feedback to the terminal device 102, such as ACK/NACK information. The terminal device 102 may confirm the end of the transmission process, or may continue with new data transmission, or may retransmit the data based on the feedback information.

It is worth noting that FIG1 shows that both terminal devices 102 and 103 are within the coverage of the network device 101, but the present application is not limited thereto. Both terminal devices 102 and 103 may not be within the coverage of the network device 101, or one terminal device 102 may be within the coverage of the network device 101 while the other terminal device 103 may not be within the coverage of the network device 101. 103 is out of the coverage of network device 101.

The following describes the terms involved in this application, but the following explanations do not constitute a limitation on the embodiments of this application.

In the embodiments of the present application, high-layer signaling may be, for example, radio resource control (RRC) signaling; for example, an RRC message, including, for example, a master information block (MIB), system information, or a dedicated RRC message; or an RRC IE (RRC information element). High-layer signaling may also be, for example, MAC (Medium Access Control) signaling; or a MAC CE (MAC control element). However, the present application is not limited thereto.

In the following description, if there is no confusion, TP, transmission point, TRP, transmitting and receiving point, and transmitting and receiving node can be used interchangeably; multiple TRPs, multi-TRP (multiple transmission and reception point), mTRP, multi-TRP, and MTRP can be used interchangeably; multi-point joint transmission, multi-transmission point cooperative transmission, and mTRP-based transmission can be used interchangeably.

In the following description, the terms "Doppler shift", "Doppler frequency deviation" and "Doppler shift" are used interchangeably.

Figure 2 is a schematic diagram of a transmission scheme, and Figure 3 is another schematic diagram of a transmission scheme. Figure 2 corresponds to the single-transmission reception point (S-TRP) scheme, Figure 3 (a) corresponds to the C-JT scheme, and Figure 3 (b) corresponds to the NC-JT scheme.

The specific difference between the C-JT and NC-JT schemes lies in the different mapping relationships between layers and multiple TRPs. In the C-JT scheme, all PDSCH/DMRS ports sent jointly from multiple TRPs and signals from multiple TRPs are coherently transmitted; in the NC-JT scheme, PDSCH/DMRS ports are sent separately from each TRP.

In previous standardization work, in Release 15 or 16 (Rel-15/16, R15/16), users all provided feedback or reported CSI based on the single-transmission reception point (S-TRP) scheme, where CSI included PMI (Precoding Matrix Indicator), RI (rank indication), LI (layer indication), CQI (Channel Quality Indicator), etc.

Release 17 (Rel-17, R17) supports CSI resource configuration and reporting enhancements for the NC-JT scheme. The UE can perform joint channel measurement based on the reference signals sent by multiple transmission points based on NC-JT (for example, M transmission points, M greater than or equal to 2), and report M PMIs, M RIs, M LIs, and N CQIs (single codeword N=1, dual codeword N=2). Currently, R17 only supports the 'typeI single-panel' codebook configuration. CSI report.

Release 18 (Rel-18, R18) supports enhanced CSI resource configuration and reporting for the C-JT solution. The UE can perform joint channel measurement based on reference signals sent by multiple transmission points using C-JT and report the complete CSI for a single joint channel. Currently, R18 supports CSI reporting based on both eType II and feType II codebook configurations.

In the C-JT solution, each data layer is mapped to multiple coordinated TRPs/panels using a weighted vector. This solution is equivalent to splicing multiple subarrays into a higher-dimensional virtual array. Therefore, the C-JT solution can achieve higher shaping/precoding/multiplexing gains and significantly improve cell-edge user throughput and average cell throughput.

(1) The current Rel-18 standardization process has explicitly supported C-JT transmission schemes and enhanced CSI reporting in ideal time-frequency synchronization and backhaul scenarios. The UE can perform joint channel measurement based on the reference signals sent by K transmission points based on C-JT transmission, and jointly report a single PMI, RI, LI, and N CQIs (single codeword N = 1, dual codeword N = 2).

(2) PMI/precoding reporting scheme: In the C-JT transmission scheme, the following precoding information is supported, which is calculated and jointly fed back based on K CSI-RS resources. The minimum frequency domain subband width of subband precoding is 2PRB:

Wherein, w _k (i) is the PMI information of the k-th transmission point, 0≤k≤K.

(3) NR supports the measurement of delay and Doppler frequency deviation based on TRS (Tracking Reference Signal), where:

a) TRS is configured as a TRS burst. X, Y, _St , and N represent the TRS burst length, TRS burst period, TRS OFDM symbol interval, and the number of OFDM symbols occupied by the TRS in a time slot, respectively. X and Y are both expressed in terms of the number of slots. The TRS time domain structure is designed as follows:

For frequency range 1 (FR1), i.e. less than 6 GHz, X = 2, _St = 4, N = 2;

For frequency range 2 (FR2), ie, greater than 6 GHz, X=1 or 2, _St =4, and N=2.

b) Specifically, each TRS resource is a CSI-RS resource of a single port and a single OFDM symbol. Therefore, a CSI-RS resource set including N CSI-RS resources can be regarded as a TRS burst.

c) Supports traditional CSI-RS configurations such as P, SP, and AP. A CSI-RS resource setting can contain K non-zero power CSI-RS resource sets (NZP CSI-RS resource sets), each of which can be configured as trs-Info via RRC.

i. One resource is one OFDM symbol, so one burst requires 2 or 4 TRSs.

d) In R15-R17, TRS is only used for UE time-frequency tracking because TRS-based CSI reporting is not supported, that is, the reporting amount is ‘none’.

(4) Quasi Co-Location (QCL) means that the large-scale parameters of the channel experienced by the symbols on one antenna port can be inferred from the channel experienced by the symbols on another antenna port. The large-scale parameters may include delay spread, average delay, Doppler spread, Doppler shift, average gain, and spatial Rx parameters.

In NR systems, all QCL types are as follows:

QCL-TypeA:{Doppler shift,Doppler spread,average delay,delay spread};

QCL-TypeB:{Doppler shift,Doppler spread};

QCL-TypeC: {Doppler shift, average delay}, only for frequency bands above 6 GHz;

QCL-TypeD:{Spatial Rx parameter}, only for frequency bands above 6 GHz.

Taking the QCL relationship after RRC configuration as an example, Table 1 shows the QCL types and reference signal types supported below 6 GHz, and Table 2 shows the QCL types and reference signal types supported above 6 GHz.

Table 1 QCL relationship after RRC configuration (below 6 GHz)

Table 2 QCL relationship after RRC configuration (above 6 GHz)

In response to at least one of the above problems, embodiments of the present application provide an information processing method, apparatus, and communication system.

Embodiments of the first aspect

The present application embodiment provides an information processing method, which is described from the perspective of a terminal device. FIG4 is a schematic diagram of the information processing method of the present application embodiment. As shown in FIG4 , the method includes:

401. The terminal device receives configuration information from the network device, where the configuration information is used to configure a first transmission mode; and

402. In a first transmission mode, a terminal device assumes that a first target signal is quasi-co-located with a first reference signal of at least one transmission configuration indication state.

According to the above embodiment, in the first transmission mode, the UE assumes that the first target signal is quasi-co-located with the first reference signal of at least one transmission configuration indication state. Thus, when the network device pre-processes (pre-compensates) the delay and/or frequency deviation of the first target signal, the UE can accurately receive the first target signal, thereby improving the transmission efficiency, enhancing the data transmission performance, and increasing the throughput of the entire network (and the terminal device).

It is worth noting that FIG4 above is merely a schematic illustration of an embodiment of the present application, and the present application is not limited thereto. For example, the execution order of the various operations may be appropriately adjusted, and other operations may be added or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above description, and are not limited to the description of FIG4 above.

In some embodiments, the first transmission mode may be a multi-point joint transmission mode. The first transmission mode may include at least one of the following: a multi-point joint transmission mode A that is predefined or configured, activated, or indicated by at least one of higher layer signaling (e.g., RRC), a media access control layer control element MAC CE, and downlink control information DCI, and/or a multi-point joint transmission mode B that is predefined or configured, activated, or indicated by at least one of higher layer signaling, a media access control layer control element, and downlink control information.

In some embodiments, in multi-point joint transmission mode A, the delay of the first target signal is compensated. For example, the UE receives coherent transmissions of TRP1 and TRP2, and receives delay compensation from TRP1 and TRP2 respectively. The first target signal received from TRP1 and the first target signal received from TRP2 have the same delay. For example, the delays of the first target signals from multiple TRPs are compensated as the delay of the first target signal of the reference TRP.

In some embodiments, in multi-point joint transmission mode B, the delay and frequency offset of the first target signal are compensated. For example, the UE receives the coherent transmissions of TRP1 and TRP2, and receives the first target signal with delay compensation and Doppler frequency offset compensation from TRP1 and TRP2, respectively. The first target signal received from TRP1 and the first target signal received from TRP2 have the same delay and the same receiving frequency. For example, the delay and frequency offset of the first target signals from multiple TRPs are compensated to the delay and frequency offset of the first target signal of the reference TRP. The manner in which the network device performs delay compensation or frequency offset compensation on the first target signal can refer to the relevant technology and will not be described in detail here.

In some embodiments, the first target signal may include at least one of the following: a demodulation reference signal DMRS of a physical downlink shared channel PUSCH; a demodulation reference signal DMRS of a physical downlink control channel PDCCH; and a channel state information reference signal CSI-RS.

In some embodiments, the first reference signal may include at least one of the following: a tracking reference signal TRS for time-frequency tracking; a channel state information reference signal CSI-RS for channel measurement; and a channel state information reference signal CSI-RS for beam management.

In some embodiments, the first target signal is quasi-co-located with at least one first reference signal indicating a transmission configuration state, meaning that large-scale parameters of a channel traversed by the first target signal can be inferred from the channel traversed by the first reference signal. This can also be stated as: the first target signal is associated with quasi-co-location information indicating the at least one transmission configuration state.

In some embodiments, the UE can measure and report the delay and/or frequency offset information for different TRPs. The network device can pre-process/compensate for the delay and/or frequency offset based on the measurement information reported by the UE. The network device can configure the TCI for the UE so that the UE can accurately receive the pre-processed/compensated data, thereby eliminating the delay/frequency offset spread between different transmission points.

In some embodiments, the UE may assume that the first target signal is associated with quasi co-location type A information of a first transmission configuration indication state among multiple transmission configuration indication states, and is associated with quasi co-location type B information of other transmission configuration indication states among the multiple transmission configuration indication states; or

The UE may expect that, among multiple transmission configuration indication states, only one transmission configuration indication state has a quasi-co-location type of type A and/or type D, and the other transmission configuration indication states have a quasi-co-location type of type B and/or type D; or

If the quasi-co-location types of multiple transmission configuration indication states are all type A, the UE may assume that the first target signal is associated with all quasi-co-location parameters in the quasi-co-location type A information of the first transmission configuration indication state among the multiple transmission configuration indication states, and is only associated with the Doppler offset parameters and Doppler extension parameters in the quasi-co-location type A information of other transmission configuration indication states among the multiple transmission configuration indication states.

In some embodiments, the UE may assume that the first target signal is associated only with the quasi-co-location type A information of the first transmission configuration indication state in the multiple transmission configuration indication states, and is not quasi-co-located with the first reference signal in other transmission configuration indication states in the multiple transmission configuration indication states; or

The UE may expect the first target signal to be indicated or activate 1 transmission configuration indication state.

The following is an exemplary description of the TCI status configured by the network device and the corresponding processing of the UE.

Take multi-point joint transmission mode A as an example:

Implementation Method 1

In some embodiments, for multi-point joint transmission mode A, the network device can configure multiple transmission configuration indication states, and the multiple transmission configuration indication states can be in the following form: the quasi-co-location type of the first transmission configuration indication state among the multiple transmission configuration indication states is type A, and the quasi-co-location type of other transmission configuration indication states among the multiple transmission configuration indication states is type B.

The UE may assume that the first target signal is associated with the quasi-co-location type A information of the first transmission configuration indication state among multiple transmission configuration indication states, and is associated with the quasi-co-location type B information of the other transmission configuration indication states among the multiple transmission configuration indication states.

Since the delay of the first target signal is compensated in multi-point joint transmission mode A, by assuming that the first target signal is associated with the quasi-co-location type A information of the first TCI state and the quasi-co-location type B information of other TCI states, the UE can accurately determine the delay information corresponding to multiple transmission points and thus accurately receive the first target signal.

Among them, the quasi-co-location type A information association between the first target signal and the first TCI state among multiple TCI states can also be expressed as: the first target signal is quasi-co-located with the first reference signal TypeA of the first TCI state among multiple TCI states; or expressed as the first target signal is quasi-co-located with the first reference signal TypeA of the first TCI state among multiple TCI states, wherein the quasi-co-location type of the first TCI state is TypeA.

For example, a UE receives coherent transmissions of TRP1 and TRP2, where the UE is configured with the TCI corresponding to TRP1. State 1 and TCI state 2 corresponding to TRP2. The quasi-colocation type of TCI state 1 is Type A, and the quasi-colocation information includes: {Doppler shift, Doppler spread, average delay, delay spread}. The quasi-colocation type of TCI state 2 is Type B, and the quasi-colocation information includes: {Doppler shift, Doppler spread}.

In this case, the UE assumes that the first target signal is associated with the quasi-co-location Type A information of TCI state1, that is, the large-scale parameters {Doppler shift, Doppler spread, average delay, delay spread} of the channel experienced by the first target signal can be determined based on the large-scale parameters {Doppler shift, Doppler spread, average delay, delay spread} of the channel experienced by the first reference signal of TCI state1.

The UE assumes that the first target signal is associated with the quasi-co-location Type B information of TCI state2, that is, the large-scale parameters {Doppler shift, Doppler spread} of the channel experienced by the first target signal can be determined based on the large-scale parameters {Doppler shift, Doppler spread} of the channel experienced by the first reference signal of TCI state2.

That is, the quasi-co-site delay information of the first target signals from TRP1 and TRP2 can be determined based on the delay information of the first reference signal in TCI state 1. The quasi-co-site frequency offset information of the first target signals from TRP1 and TRP2 can be determined based on the frequency offset information of the first reference signals in TCI state 1 and TCI state 2, respectively. This allows the UE to accurately receive the first target signal after delay pre-compensation.

In some embodiments, the first TCI state may correspond to a reference TRP.

In some embodiments, the first TCI state may include at least one of the following: a TCI state corresponding to the first reference signal with the lowest reference signal index value, a TCI state with the lowest TCI index value, and a TCI state of the second reference signal in the first reference signal.

In some embodiments, the second reference signal may be a predefined reference signal, or configured, activated or indicated by at least one of higher layer signaling (e.g., RRC), a media access control layer control element MAC CE and downlink control information DCI.

Implementation Method 2

In some embodiments, for multi-point joint transmission mode A, the network device can configure multiple TCI states, and the multiple TCI states can be in the following form: among the multiple TCI states, only one TCI state has a quasi-co-location type of type A and/or type D, and the quasi-co-location types of the other TCI states are type B and/or type D.

That is, the UE expects that among multiple TCI states, only one TCI state has a quasi-co-location type of type A and/or type D, and the quasi-co-location types of other TCI states are type B and/or type D.

In this case, the first target signal is only quasi-co-located with type A and/or type D information of one TCI state. The UE is associated with the quasi-co-location type B and/or type D information of other TCI states, so that the UE can accurately determine the delay information corresponding to multiple transmission points, and thus can accurately receive the first target signal.

Among them, the association of the first target signal with the quasi-co-location type A and/or type D information of one TCI state in multiple TCI states can also be expressed as: the first target signal is quasi-co-located with the first reference signal Type A and/or Type D of one TCI state in multiple TCI states; or it can be expressed as the first target signal is quasi-co-located with the first reference signal of one TCI state in multiple TCI states, wherein the quasi-co-location type of the TCI state is Type A and/or Type D. Similarly, the association of the first target signal with the quasi-co-location type B and/or type D information of other TCI states can also be expressed as: the first target signal is quasi-co-located with the first reference signal Type B and/or Type D of other TCI states; or it can be expressed as the first target signal is quasi-co-located with the first reference signal of other TCI states, wherein the quasi-co-location type of the TCI state is Type B and/or Type D.

For example, a UE receives coherent transmissions from TRP1, TRP2, TRP3, and TRP4. The UE is configured with TCI state 1 for TRP1, TCI state 2 for TRP2, TCI state 3 for TRP3, and TCI state 4 for TRP4. The quasi-colocation type for TCI state 1 is Type A, and the quasi-colocation information includes: {Doppler shift, Doppler spread, average delay, delay spread}. The quasi-colocation types for the other TCI states are Type B, and the quasi-colocation information includes: {Doppler shift, Doppler spread}.

Thus, the quasi-co-located delay information of the first target signals from the four TRPs can be determined based on the delay information of the first reference signal in TCI state 1. The quasi-co-located frequency offset information of the first target signals from the four TRPs can be determined based on the frequency offset information of the first reference signals in TCI state 1, TCI state 2, TCI state 3, and TCI state 4, respectively. This allows the UE to accurately receive the first target signal after delay pre-compensation.

For another example, a UE receives coherent transmissions from TRP1, TRP2, TRP3, and TRP4. The UE is configured with TCI state 1 corresponding to TRP1 and TRP2, and TCI state 2 corresponding to TRP3 and TRP4 (i.e., a TCI state can correspond to one or more TRPs). The quasi-co-location type for TCI state 1 is Type A, and the quasi-co-location information includes: {Doppler shift, Doppler spread, average delay, delay spread}. The quasi-co-location type for TCI state 2 is Type B, and the quasi-co-location information includes: {Doppler shift, Doppler spread}.

Thus, the quasi-co-site delay information of the first target signals from the four TRPs can be determined based on the delay information of the first reference signal in TCI state 1, and the quasi-co-site frequency offset information of the first target signals from the four TRPs can be determined based on the frequency offset information of the first reference signals in TCI state 1 and TCI state 2, respectively. As a result, the UE can accurately receive the first target signal after delay pre-compensation.

Implementation Method 3

In some embodiments, for multi-point joint transmission mode A, the network device may configure multiple transmission configuration indication states, which may be in the following form: the quasi-co-location types of multiple TCI states are all type A.

The UE may assume that the first target signal is associated with all quasi-co-location parameters in the quasi-co-location Type A information for a first TCI state among the multiple TCI states, and is associated only with the Doppler shift parameter and Doppler spread parameter in the quasi-co-location Type A information for other TCI states among the multiple TCI states. In this way, the UE can accurately determine the delay information corresponding to the multiple transmission points, and thus accurately receive the first target signal.

For example, a UE receives coherent transmissions from TRP1 and TRP2. The UE is configured with TCI state 1 corresponding to TRP1 and TCI state 2 corresponding to TRP2. The quasi-co-location type for both TCI state 1 and TCI state 2 is Type A, and the quasi-co-location information includes: {Doppler shift, Doppler spread, average delay, delay spread}.

In this case, the UE assumes that the first target signal is associated with all quasi-co-location parameters {Doppler shift, Doppler spread, average delay, delay spread} in the quasi-co-location TypeA information of TCI state1; the first target signal is associated with the quasi-co-location parameters {Doppler shift, Doppler spread} in the quasi-co-location TypeA information of TCI state1.

Thus, the quasi-co-site delay information of the first target signals from TRP1 and TRP2 can be determined based on the delay information of the first reference signal in TCI state 1. The quasi-co-site frequency offset information of the first target signals from TRP1 and TRP2 can be determined based on the frequency offset information of the first reference signals in TCI state 1 and TCI state 2, respectively. This allows the UE to accurately receive the first target signal after delay pre-compensation.

In some embodiments, the first TCI state may correspond to a reference TRP.

In some embodiments, the first TCI state may include at least one of the following: a TCI state corresponding to the first reference signal with the lowest reference signal index value, a TCI state with the lowest TCI index value, and a TCI state of the second reference signal in the first reference signal.

In some embodiments, the second reference signal may be a predefined reference signal, or configured, activated or indicated by at least one of higher layer signaling (e.g., RRC), a media access control layer control element MAC CE and downlink control information DCI.

Take multi-point joint transmission mode B as an example:

Implementation Method 1

In some embodiments, for multi-point joint transmission mode B, the network device may be configured with multiple transmission configuration indication states. The multiple transmission configuration indication states may be in the following form: the quasi-co-location type of the first TCI state among the multiple TCI states is type A. The other TCI states among the multiple TCI states may be of various types, for example, the aforementioned types A, B, C, and D, etc., which are not specifically limited in this application.

The UE may assume that the first target signal is associated only with the quasi-co-location type A information of the first TCI state among multiple TCI states, and is not quasi-co-located with the first reference signal of other TCI states among multiple TCI states, that is, is not associated with the QCL information of other TCI states among multiple TCI states.

Since the delay and frequency offset of the first target signal are compensated in multi-point joint transmission mode B, by assuming that the first target signal is associated with the quasi-co-location type A information of the first TCI state and is not associated with the quasi-co-location information of other TCI states, the UE can accurately determine the delay and frequency offset information corresponding to multiple transmission points, and thus can accurately receive the first target signal.

For example, a UE receives coherent transmissions from TRP1 and TRP2. The UE is configured with TCI state 1 corresponding to TRP1 and TCI state 2 corresponding to TRP2. The quasi-colocation type for TCI state 1 is Type A, and the quasi-colocation information includes: {Doppler shift, Doppler spread, average delay, delay spread}. The quasi-colocation type for TCI state 2 is Type B, and the quasi-colocation information includes: {Doppler shift, Doppler spread}.

In this case, the UE assumes that the first target signal is associated only with the quasi-co-location Type A information of TCI state 1. That is, the large-scale parameters {Doppler shift, Doppler spread, average delay, delay spread} of the channel experienced by the first target signal can be determined based on the large-scale parameters {Doppler shift, Doppler spread, average delay, delay spread} of the channel experienced by the first reference signal in TCI state 1. The UE assumes that the first target signal is not associated with the quasi-co-location Type B information of TCI state 2.

In other words, the quasi-co-site delay and frequency offset information of the first target signals from TRP1 and TRP2 are determined based on the delay and frequency offset information of the first reference signal in TCI state 1. This allows the UE to accurately receive the first target signal after delay and frequency offset pre-compensation.

In some embodiments, the first TCI state may correspond to a reference TRP.

In some embodiments, the first TCI state may include at least one of the following: a TCI state corresponding to the first reference signal with the lowest reference signal index value, a TCI state with the lowest TCI index value, and a TCI state of the second reference signal in the first reference signal.

In some embodiments, the second reference signal may be a predefined reference signal, or configured, activated or indicated by at least one of higher layer signaling (e.g., RRC), a media access control layer control element MAC CE and downlink control information DCI.

Implementation Method 2

In some embodiments, for multi-point joint transmission mode B, the network device may configure only one TCI state. That is, the first target signal indicates or activates one TCI state. The quasi co-location type of the one TCI state may be type A and/or type D.

In multi-point joint transmission mode B, the delay and frequency offset of the first target signal are compensated. By indicating or activating a single TCI state for the first target signal, the delay and frequency offset information of the first target signals from multiple TRPs are determined based on the delay and frequency offset information of the first reference signal in that single TCI state. This allows the UE to accurately receive the first target signal after delay and frequency offset pre-compensation.

In some embodiments, the configuration information from the network device may be various configuration information related to the first transmission mode. For example, the configuration information may include the aforementioned TCI state, so that after receiving the aforementioned TCI state, the UE can accurately receive the first target signal based on the corresponding assumption or expectation.

In some embodiments, as shown in FIG1 , the information processing method may further include:

403. The terminal device receives a first target signal from the network device. For example, the terminal device may receive the first target signal based on the above assumption or expectation, thereby enabling the terminal device to accurately receive the first target signal and thus improve throughput.

The information processing method of the present application is described below with reference to specific examples.

Method 1:

Step 1: The UE reports the delay and/or frequency offset information of each transmission point to the base station through CSI measurement. For example, the UE identifies and measures the delay and/or frequency offset information of four transmission points.

Step 2: The base station pre-compensates the delay and/or frequency offset information of each transmission point through pre-processing. For example, when sending PDSCH/PDCCH/DMRS, the base station pre-compensates the delays of transmission points 2, 3, and 4 by X1, X2, and X3, respectively, where X1, X2, and X3 are the offset values of the delays of transmission points 2, 3, and 4 relative to transmission point 1.

Therefore, when the PDSCH/PDCCH/DMRS is received at the UE side, ideally, the delays from transmission points 1, 2, 3, and 4 to the UE are the same.

Step 3: The UE receives the TCI status of multiple transmission points and makes the following assumptions about the QCL of PDCCH/PDSCH/DMRS:

Step 3-1: If the DMRS of PDSCH/PDCCH is indicated/activated as two or more TCI states, the UE assumes that the first TCI state is the QCL-Type A information of the DMRS of PDSCH, and the UE assumes that the remaining TCI states are the QCL-Type B information of the DMRS of PDSCH.

Step 3-2: If the UE receives the pre-processed/pre-compensated transmission mode under multi-point joint transmission, when the DMRS of PDSCH/PDCCH is indicated/activated with two or more TCI states, the UE expects that only one TCI state is Type A and/or D, and the rest of the TCI states are Type B and/or D.

Step 3-3: If two or more TCI states are indicated/activated for the DMRS of the PDSCH/PDCCH, the UE assumes that the first TCI state is the QCL-Type A information of the DMRS of the PDSCH, and the UE assumes that only the following parameters {Doppler frequency deviation, Doppler spread} in the QCL information of the remaining TCI states are used.

Method 2:

Step 1: The UE reports the delay and/or frequency offset information of each transmission point to the base station through CSI measurement. For example, the UE identifies and measures the delay and/or frequency offset information of four transmission points.

Step 2: The base station side pre-compensates the delay and/or frequency offset information of each transmission point through pre-processing. For example, when sending PDSCH/PDCCH/DMRS, the base station side pre-compensates the delay of X1, X2, and X3 and the frequency offset of Y1, Y2, and Y3 for transmission points 2, 3, and 4 respectively in advance, where X1, X2, and X3 are the relative values of the delay of transmission points 2, 3, and 4 relative to transmission point 1, and Y1, Y2, and Y3 are the relative values of the frequency offset of transmission points 2, 3, and 4 relative to transmission point 1.

Therefore, when the PDSCH/PDCCH/DMRS is received at the UE side, ideally, the delay and frequency offset from transmission points 1, 2, 3, and 4 to the UE are the same.

Step 3: The UE receives the TCI status of multiple transmission points and makes the following assumptions about the QCL of PDCCH/PDSCH/DMRS:

Step 3-1: If the DMRS of PDSCH/PDCCH is indicated/activated as two or more TCI states, the UE only assumes the QCL-Type A information of the DMRS of PDSCH in the first TCI state, and the UE does not assume the QCL information of the DMRS of PDSCH in the remaining TCI states.

Step 3-2: If the UE receives the pre-processed/pre-compensated transmission mode under the multi-point joint transmission, the UE does not expect the DMRS of the PDSCH/PDCCH to be indicated/activated with two or more TCI states.

The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

According to the above embodiment, in the first transmission mode, the UE assumes that the first target signal is quasi-co-located with the first reference signal of at least one transmission configuration indication state. Thus, when the network device pre-processes (pre-compensates) the delay and/or frequency deviation of the first target signal, the UE can accurately receive the first target signal, thereby improving the transmission efficiency, enhancing the data transmission performance, and increasing the throughput of the entire network (and the terminal device).

Embodiments of the second aspect

The embodiment of the present application provides an information processing device, which may be, for example, a terminal device, or one or more components or assemblies configured in the terminal device, and the same contents as those in the embodiment of the first aspect will not be repeated here.

Figure 5 is a schematic diagram of an information processing device according to an embodiment of the present application. As shown in Figure 5, information processing device 500 includes a receiving unit 501 and a processing unit 502. Receiving unit 501 receives configuration information from a network device, where the configuration information is used to configure a first transmission mode. In the first transmission mode, processing unit 502 assumes that a first target signal is quasi-co-located with at least one first reference signal indicating a transmission configuration state.

According to the above embodiment, in the first transmission mode, the UE assumes that the first target signal is quasi-co-located with the first reference signal of at least one transmission configuration indication state. Thus, when the network device pre-processes (pre-compensates) the delay and/or frequency deviation of the first target signal, the UE can accurately receive the first target signal, thereby improving the transmission efficiency, enhancing the data transmission performance, and increasing the throughput of the entire network (and the terminal device).

In some embodiments, the first target signal includes at least one of the following: a demodulation reference signal of a physical downlink shared channel; a demodulation reference signal of a physical downlink control channel; and a channel state information reference signal.

In some embodiments, the first reference signal includes at least one of the following: a tracking reference signal for time-frequency tracking; a channel state information reference signal for channel measurement; and a channel state information reference signal for beam management.

In some embodiments, the first transmission mode includes at least one of the following: a multi-point joint transmission mode A that is predefined or configured, activated or indicated by at least one of higher-layer signaling, media access control layer control elements and downlink control information; a multi-point joint transmission mode B that is predefined or configured, activated or indicated by at least one of higher-layer signaling, media access control layer control elements and downlink control information.

In some embodiments, in the multi-point joint transmission mode A, the delay of the first target signal is compensated; or in the multi-point joint transmission mode B, the delay and frequency offset of the first target signal are compensated.

In some embodiments, in the multi-point joint transmission mode A, the processing unit 502 assumes that the first target signal is associated with the quasi-co-location type A information of the first transmission configuration indication state among the multiple transmission configuration indication states, and is associated with the quasi-co-location type B information of other transmission configuration indication states among the multiple transmission configuration indication states.

In some embodiments, the first transmission configuration indicates a state including at least one of the following:

the transmission configuration indication state corresponding to the first reference signal having the lowest reference signal index value,

The transmission configuration indication state with the lowest transmission configuration indication index value,

The transmission configuration indication state of the second reference signal in the first reference signal.

In some embodiments, the second reference signal is a predefined reference signal, or is configured, activated or indicated through at least one of higher layer signaling, a media access control layer control element and downlink control information.

In some embodiments, in the multi-point joint transmission mode A, only one of the multiple transmission configuration indication states has a quasi-co-location type of type A and/or type D, and the quasi-co-location types of the other transmission configuration indication states are type B and/or type D.

In some embodiments, in the multi-point joint transmission mode A, the quasi-co-location types of the multiple transmission configuration indication states are all type A, and the processing unit 502 assumes that the first target signal is associated with all quasi-co-location parameters in the quasi-co-location type A information of the first transmission configuration indication state among the multiple transmission configuration indication states, and is only associated with the Doppler offset parameters and Doppler extension parameters in the quasi-co-location type A information of other transmission configuration indication states among the multiple transmission configuration indication states.

In some embodiments, the first transmission configuration indicates a state including at least one of the following:

the transmission configuration indication state corresponding to the first reference signal having the lowest reference signal index value,

The transmission configuration indication state with the lowest transmission configuration indication index value,

The transmission configuration indication state of the second reference signal in the first reference signal.

In some embodiments, the second reference signal is a predefined reference signal, or is configured, activated or indicated through at least one of higher layer signaling, a media access control layer control element and downlink control information.

In some embodiments, in the multi-point joint transmission mode B, the processing unit 502 assumes that the first target signal is only in the quasi-co-location type of the first transmission configuration indication state in the plurality of transmission configuration indication states. The type A information is associated and is not quasi-co-located with the first reference signals of other transmission configuration indication states in the plurality of transmission configuration indication states.

In some embodiments, the first transmission configuration indication state includes at least one of the following: the transmission configuration indication state corresponding to the first reference signal with the lowest reference signal index value, the transmission configuration indication state with the lowest transmission configuration indication index value, and the transmission configuration indication state of the second reference signal in the first reference signal.

In some embodiments, the second reference signal is a predefined reference signal, or is configured, activated or indicated through at least one of higher layer signaling, a media access control layer control element and downlink control information DCI.

In some embodiments, in the multi-point joint transmission mode B, the first target signal is indicated or activates 1 transmission configuration indication state.

In some embodiments, the quasi-co-location type of the one transmission configuration indication state is type A and/or type D.

In some embodiments, the receiving unit 501 is further configured to receive the first target signal based on the assumption or the expectation.

In some embodiments, the processing unit 502 assumes that the first target signal is associated with the quasi-co-location type A information of the first transmission configuration indication state among the multiple transmission configuration indication states, and is associated with the quasi-co-location type B information of the other transmission configuration indication states among the multiple transmission configuration indication states; or

Among the multiple transmission configuration indication states, only one transmission configuration indication state has a quasi-co-location type of type A and/or type D, and the other transmission configuration indication states have a quasi-co-location type of type B and/or type D; or

The quasi-co-location types of the multiple transmission configuration indication states are all type A, and the processing unit 502 assumes that the first target signal is associated with all quasi-co-location parameters in the quasi-co-location type A information of the first transmission configuration indication state among the multiple transmission configuration indication states, and is only associated with the Doppler shift parameter and the Doppler extension parameter in the quasi-co-location type A information of other transmission configuration indication states among the multiple transmission configuration indication states; or

The processing unit 502 assumes that the first target signal is associated only with the quasi-co-location type A information of a first transmission configuration indication state among the multiple transmission configuration indication states, and is not quasi-co-located with the first reference signals in other transmission configuration indication states among the multiple transmission configuration indication states; or

The first target signal is indicated or activates a transmission configuration indication state.

The above embodiments are merely exemplary descriptions of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The information processing device 500 may also include other components or modules. For the specific contents of these components or modules, reference may be made to the relevant art.

In addition, for simplicity, FIG5 only illustrates the connection relationship or signal path between various components or modules. However, those skilled in the art should be aware that various related technologies such as bus connection can be used. The above-mentioned components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; this application is not limited to this.

According to the above embodiment, in the first transmission mode, the UE assumes that the first target signal is quasi-co-located with the first reference signal of at least one transmission configuration indication state. Thus, when the network device pre-processes (pre-compensates) the delay and/or frequency deviation of the first target signal, the UE can accurately receive the first target signal, thereby improving the transmission efficiency, enhancing the data transmission performance, and increasing the throughput of the entire network (and the terminal device).

Embodiments of the third aspect

The embodiment of the present application provides an information processing method, which is described from the perspective of a network device. The contents that are the same as those in the embodiment of the first aspect are not repeated here.

FIG6 is a schematic diagram of an information processing method according to an embodiment of the present application. As shown in FIG6 , the method includes:

601. Send configuration information to a terminal device, where the configuration information is used to configure a first transmission mode.

According to the above embodiment, the network device sends configuration information for configuring the first transmission mode to the terminal device, thereby enabling the UE to communicate with the network device in the first transmission mode. When the network device preprocesses (pre-compensates) the delay and/or frequency offset of the first target signal, the UE can accurately receive the first target signal, thereby improving transmission efficiency, enhancing data transmission performance, and increasing the throughput of the entire network (and the terminal device).

It is worth noting that FIG6 above is merely a schematic illustration of an embodiment of the present application, and the present application is not limited thereto. For example, the execution order of the various operations may be appropriately adjusted, and other operations may be added or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above description, and are not limited to the description of FIG6 above.

In some embodiments, the first transmission mode includes at least one of the following: a multi-point joint transmission mode A that is predefined or configured, activated or indicated by at least one of higher-layer signaling, media access control layer control elements and downlink control information; a multi-point joint transmission mode B that is predefined or configured, activated or indicated by at least one of higher-layer signaling, media access control layer control elements and downlink control information.

In some embodiments, in the multi-point joint transmission mode A, the delay of the first target signal is compensated.

In some embodiments, in the multi-point joint transmission mode B, the time delay and frequency offset of the first target signal are compensated.

In some embodiments, the configuration information includes at least one of the following transmission configuration indication states:

The quasi-co-location type of the first transmission configuration indication state among the multiple transmission configuration indication states is type A, and the quasi-co-location type of the other transmission configuration indication states among the multiple transmission configuration indication states is type B; or

Among the multiple transmission configuration indication states, only one transmission configuration indication state has a quasi-co-location type of type A and/or type D, and the other transmission configuration indication states have a quasi-co-location type of type B and/or type D; or

The quasi-co-location types of the plurality of transmission configuration indication states are all type A; or

The quasi-co-location type of the first transmission configuration indication state among the multiple transmission configuration indication states is type A; or

The first target signal is indicated or activates 1 transmission configuration indication state.

In some embodiments, for multi-point joint transmission mode A, the transmission configuration indication state includes at least one of the following:

The quasi-co-location type of the first transmission configuration indication state among the multiple transmission configuration indication states is type A, and the quasi-co-location type of the other transmission configuration indication states among the multiple transmission configuration indication states is type B; or

Among the multiple transmission configuration indication states, only one transmission configuration indication state has a quasi-co-location type of type A and/or type D, and the other transmission configuration indication states have a quasi-co-location type of type B and/or type D; or

The quasi-co-location types of the multiple transmission configuration indication states are all type A.

In some embodiments, the first transmission configuration indication state includes at least one of the following: the transmission configuration indication state corresponding to the first reference signal with the lowest reference signal index value, the transmission configuration indication state with the lowest transmission configuration indication index value, and the transmission configuration indication state of the second reference signal in the first reference signal.

In some embodiments, the second reference signal is a predefined reference signal, or is transmitted through high-layer signaling, At least one of the media access control layer control element and the downlink control information is configured, activated or indicated.

In some embodiments, for multi-point joint transmission mode B, the transmission configuration indication state includes at least one of the following:

The quasi-co-location type of the first transmission configuration indication state among the multiple transmission configuration indication states is type A; or

The first target signal is indicated or activates 1 transmission configuration indication state.

In some embodiments, the first transmission configuration indication state includes at least one of the following: the transmission configuration indication state corresponding to the first reference signal with the lowest reference signal index value, the transmission configuration indication state with the lowest transmission configuration indication index value, and the transmission configuration indication state of the second reference signal in the first reference signal.

In some embodiments, the second reference signal is a predefined reference signal, or is configured, activated or indicated through at least one of higher layer signaling, a media access control layer control element and downlink control information.

In some embodiments, the first target signal includes at least one of the following: a demodulation reference signal of a physical downlink shared channel; a demodulation reference signal of a physical downlink control channel; and a channel state information reference signal.

In some embodiments, the first target signal is quasi-co-located with at least one first reference signal that transmits a configuration indication state.

In some embodiments, the first reference signal includes at least one of the following: a tracking reference signal for time-frequency tracking; a channel state information reference signal for channel measurement; and a channel state information reference signal for beam management.

In some embodiments, the quasi-co-location type of the one transmission configuration indication state is type A and/or type D.

In some embodiments, the network device may perform delay compensation on the first target signal, or perform delay and frequency offset compensation on the first target signal.

In some embodiments, as shown in FIG6 , the information processing method may further include:

602. Send the first target signal to the terminal device.

The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

According to the above embodiment, the network device sends configuration information for configuring the first transmission mode to the terminal device. Thus, the UE can communicate with the network device in the first transmission mode. When the network device preprocesses (precompensates) the delay and/or frequency offset of the first target signal, the UE can accurately receive the first target signal, thereby improving transmission efficiency, enhancing data transmission performance, and increasing the overall network (and the terminal device) throughput.

Embodiments of the fourth aspect

The embodiment of the present application provides an information processing device, which may be, for example, a network device, or one or more components or assemblies configured on the network device, and the contents that are the same as those in the embodiment of the third aspect are not repeated here.

Figure 7 is a schematic diagram of an information processing apparatus according to an embodiment of the present application. As shown in Figure 7, the information processing apparatus 700 includes a sending unit 701. The sending unit 701 sends configuration information to a terminal device, where the configuration information is used to configure a first transmission mode.

According to the above embodiment, the network device sends configuration information for configuring the first transmission mode to the terminal device, thereby enabling the UE to communicate with the network device in the first transmission mode. When the network device preprocesses (pre-compensates) the delay and/or frequency offset of the first target signal, the UE can accurately receive the first target signal, thereby improving transmission efficiency, enhancing data transmission performance, and increasing the throughput of the entire network (and the terminal device).

In some embodiments, the first transmission mode includes at least one of the following: a multi-point joint transmission mode A that is predefined or configured, activated or indicated by at least one of higher-layer signaling, media access control layer control elements and downlink control information; a multi-point joint transmission mode B that is predefined or configured, activated or indicated by at least one of higher-layer signaling, media access control layer control elements and downlink control information.

In some embodiments, in the multi-point joint transmission mode A, the delay of the first target signal is compensated.

In some embodiments, in the multi-point joint transmission mode B, the time delay and frequency offset of the first target signal are compensated.

In some embodiments, the configuration information includes at least one of the following transmission configuration indication states:

The quasi-co-location type of the first transmission configuration indication state among the multiple transmission configuration indication states is type A, and the quasi-co-location type of the other transmission configuration indication states among the multiple transmission configuration indication states is type B; or

Among the multiple transmission configuration indication states, only one transmission configuration indication state has a quasi-co-location type of type A and/or type D, and the quasi-co-location type of the other transmission configuration indication state is type B and/or type D; or

The quasi-co-location types of the plurality of transmission configuration indication states are all type A; or

The quasi-co-location type of the first transmission configuration indication state among the multiple transmission configuration indication states is type A; or

The first target signal is indicated or activates 1 transmission configuration indication state.

In some embodiments, for multi-point joint transmission mode A, the transmission configuration indication state includes at least one of the following:

The quasi-co-location type of the first transmission configuration indication state among the multiple transmission configuration indication states is type A, and the quasi-co-location type of the other transmission configuration indication states among the multiple transmission configuration indication states is type B; or

Among the multiple transmission configuration indication states, only one transmission configuration indication state has a quasi-co-location type of type A and/or type D, and the other transmission configuration indication states have a quasi-co-location type of type B and/or type D; or

The quasi-co-location types of the multiple transmission configuration indication states are all type A.

In some embodiments, the first transmission configuration indication state includes at least one of the following: the transmission configuration indication state corresponding to the first reference signal with the lowest reference signal index value, the transmission configuration indication state with the lowest transmission configuration indication index value, and the transmission configuration indication state of the second reference signal in the first reference signal.

In some embodiments, the second reference signal is a predefined reference signal, or is configured, activated or indicated through at least one of higher layer signaling, a media access control layer control element and downlink control information.

In some embodiments, for multi-point joint transmission mode B, the transmission configuration indication state includes at least one of the following:

The quasi-co-location type of the first transmission configuration indication state among the multiple transmission configuration indication states is type A; or

The first target signal is indicated or activates 1 transmission configuration indication state.

In some embodiments, the first transmission configuration indication state includes at least one of the following: the transmission configuration indication state corresponding to the first reference signal with the lowest reference signal index value, the transmission configuration indication state with the lowest transmission configuration indication index value, and the transmission configuration indication state of the second reference signal in the first reference signal.

In some embodiments, the second reference signal is a predefined reference signal, or is configured, activated or indicated through at least one of higher layer signaling, a media access control layer control element and downlink control information.

In some embodiments, the first target signal includes at least one of the following: Demodulation reference signal; demodulation reference signal of physical downlink control channel; channel state information reference signal.

In some embodiments, the first target signal is quasi-co-located with at least one first reference signal that transmits a configuration indication state.

In some embodiments, the first reference signal includes at least one of the following: a tracking reference signal for time-frequency tracking; a channel state information reference signal for channel measurement; and a channel state information reference signal for beam management.

In some embodiments, the quasi-co-location type of the one transmission configuration indication state is type A and/or type D.

In some embodiments, the network device may perform delay compensation on the first target signal, or perform delay and frequency offset compensation on the first target signal.

In some embodiments, the sending unit 701 may further send the first target signal to the terminal device.

The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

It is worth noting that the above description only describes the components or modules related to the present application, but the present application is not limited thereto. The information processing device 700 may also include other components or modules. For details of these components or modules, reference may be made to related technologies.

In addition, for the sake of simplicity, FIG7 only illustrates the connection relationship or signal direction between various components or modules. However, it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

According to the above embodiment, the network device sends configuration information for configuring the first transmission mode to the terminal device, thereby enabling the UE to communicate with the network device in the first transmission mode. When the network device preprocesses (pre-compensates) the delay and/or frequency offset of the first target signal, the UE can accurately receive the first target signal, thereby improving transmission efficiency, enhancing data transmission performance, and increasing the throughput of the entire network (and the terminal device).

Embodiments of the fifth aspect

An embodiment of the present application also provides a communication system, and reference may be made to FIG1 . The contents that are the same as those in the embodiments of the first to fourth aspects will not be repeated.

In some embodiments, the communication system 100 may include at least a network device and a terminal device. The network device sends configuration information to the terminal device, where the configuration information is used to configure a first transmission mode. The terminal device receives the configuration information and assumes, in the first transmission mode, that a first target signal is quasi-co-located with at least one first reference signal indicating a transmission configuration state.

An embodiment of the present application further provides a network device, which may be, for example, a base station, but the present application is not limited thereto and may also be other network devices.

Figure 8 is a schematic diagram illustrating the structure of a network device according to an embodiment of the present application. As shown in Figure 8 , network device 800 may include a processor 810 (e.g., a central processing unit (CPU)) and a memory 820 ; the memory 820 is coupled to the processor 810 . The memory 820 may store various data and may also store an information processing program 830 , which is executed under the control of the processor 810 .

For example, the processor 810 may be configured to execute a program to implement the operation of the network device in the method according to the embodiment of the third aspect. For example, the processor 810 may be configured to perform the following control: sending configuration information to the terminal device, the configuration information being used to configure the first transmission mode.

In addition, as shown in FIG8 , the network device 800 may further include: a transceiver 840 and an antenna 850, etc.; wherein, the functions of the above components are similar to those in the related art and are not further described here. It is worth noting that the network device 800 does not necessarily include all the components shown in FIG8 ; in addition, the network device 800 may also include components not shown in FIG8 , and reference may be made to the related art for details.

The embodiment of the present application also provides a terminal device, but the present application is not limited thereto and may also be other devices.

Figure 9 is a schematic diagram of a terminal device according to an embodiment of the present application. As shown in Figure 9 , terminal device 900 may include a processor 910 and a memory 920. Memory 920 stores data and programs and is coupled to processor 910. It should be noted that this diagram is exemplary; other types of structures may be used to supplement or replace this structure to implement telecommunication or other functions.

For example, the processor 910 may be configured to execute a program to implement the method according to the embodiment of the first aspect. For example, the processor 910 may be configured to perform the following control: the terminal device receives configuration information from the network device, where the configuration information is used to configure a first transmission mode, where in the first transmission mode, it is assumed that the first target signal is quasi-co-located with at least one first reference signal indicating a transmission configuration state.

As shown in Figure 9 , the terminal device 900 may further include: a communication module 930, an input unit 940, a display 950, and a power supply 960. The functions of these components are similar to those in the related art and are not described here in detail. It is worth noting that the terminal device 900 does not necessarily include all of the components shown in Figure 9 , and the above components are not essential. Furthermore, the terminal device 900 may also include components not shown in Figure 9 , for which reference may be made to the related art.

An embodiment of the present application further provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the method described in the embodiment of the first aspect.

An embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the method described in the embodiment of the first aspect.

An embodiment of the present application further provides a computer program, wherein when the program is executed in a network device, the program causes the network device to execute the method described in the embodiment of the third aspect.

An embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program enables a network device to execute the method described in the embodiment of the third aspect.

The above devices and methods of the present application can be implemented by hardware or by a combination of hardware and software. The present application relates to such a computer-readable program that, when executed by a logic component, enables the logic component to implement the devices or components described above, or enables the logic component to implement the various methods or steps described above. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

The method/device described in conjunction with the embodiments of the present application can be directly embodied as hardware, a software module executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams shown in the figure and/or one or more combinations of functional block diagrams can correspond to various software modules of the computer program flow or to various hardware modules. These software modules can respectively correspond to the various steps shown in the figure. These hardware modules can be implemented by solidifying these software modules, for example, using a field programmable gate array (FPGA).

The software module may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other form of storage medium known in the art. A storage medium may be coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be an integral part of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if a device (such as a mobile terminal) uses a large capacity If a MEGA-SIM card or a large-capacity flash memory device is used, the software module can be stored in the MEGA-SIM card or the large-capacity flash memory device.

One or more of the functional blocks and/or one or more combinations of functional blocks described in the accompanying drawings may be implemented as a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any appropriate combination thereof for performing the functions described in this application. One or more of the functional blocks and/or one or more combinations of functional blocks described in the accompanying drawings may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

The present application has been described above in conjunction with specific embodiments. However, those skilled in the art should understand that these descriptions are merely illustrative and are not intended to limit the scope of protection of the present application. Those skilled in the art may make various modifications and variations to the present application based on the spirit and principles of the present application, and such modifications and variations are also within the scope of the present application.

Regarding the implementation methods including the above embodiments, the following additional notes are also disclosed:

Note 1. An information processing method, applied to a terminal device, comprising:

The terminal device receives configuration information from the network device, where the configuration information is used to configure the first transmission mode;

In the first transmission mode, the terminal device assumes that the first target signal is quasi-co-located with a first reference signal of at least one transmission configuration indication state.

Supplementary note 2. The method according to Supplementary note 1, wherein the first target signal includes at least one of the following:

Demodulation reference signal of physical downlink shared channel;

Demodulation reference signal of physical downlink control channel;

Channel State Information Reference Signal.

Supplementary note 3. The method according to Supplementary note 2, wherein the first reference signal comprises at least one of the following:

Tracking reference signal for time-frequency tracking;

Channel state information reference signal for channel measurement;

Channel state information reference signal for beam management.

Supplement 4. The method according to Supplement 1, wherein:

Assume that the first target signal is associated with quasi co-location type A information of a first transmission configuration indication state among the multiple transmission configuration indication states, and is associated with quasi co-location type B information of other transmission configuration indication states among the multiple transmission configuration indication states; or

Among the multiple transmission configuration indication states, only one transmission configuration indication state has a quasi-co-location type of type A and/or type D, and the other transmission configuration indication states have a quasi-co-location type of type B and/or type D; or

The quasi-co-location types of the multiple transmission configuration indication states are all type A, assuming that the first target signal is associated with all quasi-co-location parameters in the quasi-co-location type A information of the first transmission configuration indication state among the multiple transmission configuration indication states, and is only associated with the Doppler shift parameter and Doppler extension parameter in the quasi-co-location type A information of other transmission configuration indication states among the multiple transmission configuration indication states; or

Assume that the first target signal is associated only with the quasi-co-location type A information of a first transmission configuration indication state among the multiple transmission configuration indication states, and is not quasi-co-located with the first reference signal in other transmission configuration indication states among the multiple transmission configuration indication states; or

The first target signal is indicated or activates a transmission configuration indication state.

Claims (20)

An information processing device, configured in a terminal device, comprising: a receiving unit configured to receive configuration information from a network device, wherein the configuration information is used to configure a first transmission mode; A processing unit is configured to assume, in the first transmission mode, that a first target signal is quasi-co-located with at least one first reference signal of a transmission configuration indication state. The apparatus according to claim 1, wherein the first target signal comprises at least one of the following: Demodulation reference signal of physical downlink shared channel; Demodulation reference signal of physical downlink control channel; Channel State Information Reference Signal. The apparatus according to claim 1, wherein the first reference signal comprises at least one of the following: Tracking reference signal for time-frequency tracking; Channel state information reference signal for channel measurement; Channel state information reference signal for beam management. The apparatus according to claim 1, wherein the first transmission mode comprises at least one of the following: Joint multi-point transmission mode A, predefined, or configured, activated, or indicated by at least one of higher layer signaling, media access control layer control elements, and downlink control information; Multi-point joint transmission mode B is predefined or configured, activated or indicated through at least one of higher layer signaling, media access control layer control elements and downlink control information. The device according to claim 4, wherein In the multi-point joint transmission mode A, the delay of the first target signal is compensated; or In the multi-point joint transmission mode B, the time delay and frequency offset of the first target signal are compensated. The device according to claim 4, wherein In the multi-point joint transmission mode A, the processing unit assumes that the first target signal is associated with the quasi-co-location type A information of the first transmission configuration indication state among the multiple transmission configuration indication states, and is associated with the quasi-co-location type B information of the other transmission configuration indication states among the multiple transmission configuration indication states. The apparatus according to claim 6, wherein the first transmission configuration indication state includes the following At least one: the transmission configuration indication state corresponding to the first reference signal having the lowest reference signal index value, The transmission configuration indication state with the lowest transmission configuration indication index value, The transmission configuration indication state of the second reference signal in the first reference signal. The device according to claim 7, wherein The second reference signal is a predefined reference signal, or is configured, activated or indicated through at least one of higher layer signaling, a media access control layer control element and downlink control information. The device according to claim 4, wherein In the multi-point joint transmission mode A, among the multiple transmission configuration indication states, only one transmission configuration indication state has a quasi-co-location type of type A and/or type D, and the quasi-co-location types of the other transmission configuration indication states are type B and/or type D. The device according to claim 4, wherein In the multi-point joint transmission mode A, the quasi-co-location types of the multiple transmission configuration indication states are all type A, The processing unit assumes that the first target signal is associated with all quasi-co-location parameters in the quasi-co-location type A information of the first transmission configuration indication state among the multiple transmission configuration indication states, and is only associated with the Doppler offset parameters and Doppler extension parameters in the quasi-co-location type A information of other transmission configuration indication states among the multiple transmission configuration indication states. The apparatus of claim 10, wherein the first transmission configuration indicates a state comprising at least one of the following: the transmission configuration indication state corresponding to the first reference signal having the lowest reference signal index value, The transmission configuration indication state with the lowest transmission configuration indication index value, The transmission configuration indication state of the second reference signal in the first reference signal. The device according to claim 11, wherein The second reference signal is a predefined reference signal, or is configured, activated or indicated through at least one of higher layer signaling, a media access control layer control element and downlink control information. The device according to claim 4, wherein In the multi-point joint transmission mode B, the processing unit assumes that the first target signal is only transmitted by a plurality of The quasi co-location type A information of the first transmission configuration indication state in the transmission configuration indication state is associated with the quasi co-location type A information of the first transmission configuration indication state in the transmission configuration indication state, and is not quasi co-located with the first reference signals of other transmission configuration indication states in the plurality of transmission configuration indication states. The apparatus of claim 13, wherein the first transmission configuration indicates a state comprising at least one of the following: the transmission configuration indication state corresponding to the first reference signal having the lowest reference signal index value, The transmission configuration indication state with the lowest transmission configuration indication index value, The transmission configuration indication state of the second reference signal in the first reference signal. The device according to claim 14, wherein The second reference signal is a predefined reference signal, or is configured, activated or indicated through at least one of higher layer signaling, a media access control layer control element and downlink control information DCI. The device according to claim 4, wherein In the multi-point joint transmission mode B, the first target signal is indicated or activates one transmission configuration indication state. The device according to claim 16, wherein The quasi-co-location type of the one transmission configuration indication state is type A and/or type D. The device according to claim 1, wherein The processing unit assumes that the first target signal is associated with quasi co-location type A information of a first transmission configuration indication state among the multiple transmission configuration indication states, and is associated with quasi co-location type B information of other transmission configuration indication states among the multiple transmission configuration indication states; or Among the multiple transmission configuration indication states, only one transmission configuration indication state has a quasi-co-location type of type A and/or type D, and the other transmission configuration indication states have a quasi-co-location type of type B and/or type D; or The quasi-co-location types of the multiple transmission configuration indication states are all type A, and the processing unit assumes that the first target signal is associated with all quasi-co-location parameters in the quasi-co-location type A information of the first transmission configuration indication state among the multiple transmission configuration indication states, and is only associated with the Doppler shift parameter and the Doppler extension parameter in the quasi-co-location type A information of other transmission configuration indication states among the multiple transmission configuration indication states; or The processing unit assumes that the first target signal is associated only with the quasi co-location type A information of a first transmission configuration indication state among the multiple transmission configuration indication states, and is not quasi co-located with the first reference signals in other transmission configuration indication states among the multiple transmission configuration indication states; or The first target signal is indicated or activates a transmission configuration indication state. An information processing method, applied to a terminal device, comprising: The terminal device receives configuration information from the network device, where the configuration information is used to configure the first transmission mode; In the first transmission mode, the terminal device assumes that the first target signal is quasi-co-located with at least one first reference signal of a transmission configuration indication state. A communication system includes a network device and a terminal device, wherein: The network device sends configuration information to the terminal device, where the configuration information is used to configure a first transmission mode; The terminal device receives the configuration information and, in the first transmission mode, assumes that the first target signal is quasi-co-located with at least one first reference signal indicating a transmission configuration state.