WO2018127181A1 - Signal transmission method and apparatus - Google Patents

Abstract

An embodiment of the present invention provides a signal transmission method. A user equipment receives a first signal from a wireless network device; and the user equipment determines, according to the first signal, spatial information of a second signal to be sent, and sends the second signal to be sent by using the spatial information. An uplink transmission beam is determined by using related information of a downlink reception beam, so that a UE can efficiently determine spatial information of an uplink signal sent by the UE.

Description

Signal transmission method and device Technical field

The present application relates to the field of communications technologies, and in particular, to a signal transmission method and apparatus.

Background technique

1 is a structural diagram of a communication system including a plurality of wireless network devices (such as base stations) and a plurality of user equipments (UEs) covered by each network device.

Massive Multiple Input Multiple Output (Massive MIMO) can further increase system capacity by utilizing more spatial degrees of freedom, becoming the key technology of the new Radio Access Technology (NR). One.

In NR, beam-based transmission has become a major focus. The configuration of the large-scale antenna array enables high-resolution beams to be formed in the NR.

In the uplink transmission, the uplink transmission of the uplink signal by the UE (ie, the spatial information or the direction information of the uplink signal) is an urgent problem to be solved in the current research.

Summary of the invention

The embodiment of the invention provides a method and a device for signal transmission, so that the UE can determine the spatial information of the uplink signal to be transmitted more efficiently.

In a first aspect, an embodiment of the present invention provides a signal transmission method, including:

The user equipment receives the first signal from the first wireless network device;

Determining, by the user equipment, spatial information of the second signal to be sent according to the first signal, and transmitting the second signal to be sent by using the spatial information.

Optionally, the user equipment receives the first indication information from the second wireless network device, where the first indication information is used to indicate that the second signal and the first signal have a quasi-co-location relationship with respect to the spatial information. The second wireless network device is the same as or different from the first wireless network device.

Optionally, the method further includes:

The user equipment receives second indication information from the second wireless network device, where the second indication information is used to indicate that the first signal is used as a reference for spatial information of the second signal, and the second wireless network device The first wireless network device is the same or different.

Optionally, the determining, by the user equipment, the spatial information of the second signal to be sent according to the first signal includes:

Determining, by the user equipment, that the first signal belongs to a signal referenced by spatial information of the second signal, and the user equipment determines, according to the first signal, spatial information of the second signal to be sent according to the first signal;

Optionally, the determining, by the user equipment, the signal that the first signal belongs to the spatial information of the second signal may include: determining, by the user equipment, that the first signal has spatial information of the second signal. The characteristics of the signal.

Optionally, the first signal may include one or more signals, and the second signal/second signal related signal may include one or more signals.

In a second aspect, an embodiment of the present invention provides a signal transmission method, including:

The first wireless network device sends the first signal to the user equipment;

The first wireless network device receives a second signal from the user equipment, wherein the first signal is a reference to spatial information of the second signal.

Optionally, the first wireless network device sends first indication information to the user equipment, where the first indication information is used to indicate that the second signal and the first signal have a quasi-co-location relationship with respect to spatial information.

Optionally, the second wireless network device sends the first indication information to the user equipment, where the first indication information is used to indicate that the second signal and the first signal have a quasi-co-location relationship with respect to the spatial information.

Optionally, the method further includes: the first wireless network device sends second indication information to the user equipment, where the second indication information is used to indicate that the first signal is used as spatial information of the second signal. Reference. Or the second wireless network device sends second indication information to the user equipment, where the second indication information is used to indicate that the first signal is used as a reference for spatial information of the second signal.

Optionally, the reference that the first signal is the spatial information of the second signal includes:

The first signal has a characteristic of a signal referenced by spatial information of the second signal.

Combining the first aspect or the second aspect,

Optionally, the second wireless network device is a serving wireless network device of the user equipment, where the first wireless network device is the serving wireless network device, or is other than the serving wireless network device Wireless network device.

Optionally, the first indication information is used to indicate that the second signal and the first signal have a quasi-co-location relationship with respect to spatial information, including:

The first indication information is used to indicate that the resource information of the second signal and the resource information of the first signal have a quasi-co-location relationship with respect to the spatial information, where the resource information includes resource identification information, antenna port information, and channel state information measurement settings. At least one of identification information and process identification information.

Optionally, the first signal includes a non-zero power reference signal. For example, the non-zero power reference signal included in the first signal is a non-zero power reference signal for obtaining channel state information, a non-zero power reference signal for demodulation, and a non-zero power. At least one of the beam management reference signals.

Optionally, the second signal includes a reference signal. For example, the reference signal included in the second signal is at least one of a reference signal for demodulation and a reference signal for uplink channel measurement.

Optionally, the first indication information is included in a domain used to indicate quasi-co-location information; or

The first indication information is included in the downlink control information, and the downlink control information further includes information used to indicate uplink scheduling; or

The first indication information is included in an information field for indicating uplink scheduling related.

Optionally, the second indication information is included in configuration information of the first signal. For example, the configuration information of the first signal includes a channel state information measurement setting field of the first signal, a process domain of the first signal, a resource domain of the first signal, and an antenna of the first signal. a port information field, and at least one of a beam information field in which the first signal is located.

Optionally, the second indication information includes a number of bits, the first signal corresponds to at least one of the several bits, and the at least one bit indicates the first signal is used as the second signal. Reference to spatial information. In this case, the second indication information may be included in a channel state information measurement setting field of the first signal or a process domain of the first signal.

Optionally, the second indication information is a domain having a Boolean value, or the second indication information is only present when referring to the spatial information of the first signal as the second signal. In this case, the second indication information may be included in a resource domain of the first signal, an antenna port information field of the first signal, and at least one of a beam information field in which the first signal is located. .

Optionally, the feature of the signal referenced by the spatial information of the second signal includes resource information of the signal, where the resource information includes antenna port information, resource identifier information, channel state information measurement setting identifier information, and process identifier information. At least one of the signals includes at least one of a downlink control signal, a non-zero power reference signal, and a signal for beam management.

Optionally, the spatial information of the second signal includes an emission angle of the second signal, and an emission angle of the second signal is determined according to an angle of arrival of the first signal.

Optionally, the method further includes:

Determining, by the terminal device, a transmit power of the uplink signal to be sent according to the received power of the first signal;

Transmitting, by the terminal device, the uplink signal according to the transmit power, where the uplink signal includes the second signal and/or a signal related to the second signal; and/or,

The terminal device adjusts an uplink transmission timing advance amount according to a change value of the receiving time of the first signal;

The terminal device transmits an uplink signal based on the adjusted uplink transmission timing advance, the uplink signal including the second signal and/or a signal related to the second signal.

The second signal related signal may be a signal that the intersection of the antenna port of the signal and the antenna port of the second signal is non-empty.

Optionally, the first signal may include one or more signals, and the second signal/second signal related signal may include one or more signals. In a third aspect, there is also provided a device for signal transmission, which may be a chip in a user equipment or user equipment, including a processor, a memory, and a transceiver.

The memory is configured to store instructions for executing the memory stored instructions to control transceivers to receive and transmit signals, and when the processor executes the instructions stored by the memory, the user equipment is used by Any one of the methods involved in the user equipment as described in the first aspect is completed.

In a fourth aspect, there is also provided a device for signal transmission, which may be a chip in a wireless network device or a wireless network device, including a processor, a memory, and a transceiver.

The memory is configured to store instructions, the processor is configured to execute the memory stored instructions to control transceivers to receive and transmit signals, and when the processor executes the instructions stored in the memory, the wireless network device uses Any one of the methods involved in the first wireless network device or the second wireless network device as described in the second aspect.

In a fifth aspect, there is also provided an apparatus for signal transmission, comprising a module for implementing any of the methods involved in the foregoing user equipment. The specific modules may correspond to the method steps, and are not described herein.

In a sixth aspect, an apparatus for signal transmission is provided, including a module for implementing any one of the foregoing first wireless network device or second wireless network device. The specific modules may correspond to the method steps, and are not described herein.

In a seventh aspect, a computer storage medium is provided for storing instructions that, when executed, perform any of the methods involved in the user equipment or the first or second wireless network device.

The eighth aspect, further provides a communication system, including the first wireless network device provided by the fourth aspect, and further includes the second wireless network device involved in the foregoing second aspect. Further, the user equipment provided by the aforementioned third aspect may be further included.

In a ninth aspect, there is also provided a communication device having a function for implementing behavior of a first or second wireless network device or user equipment in the above method aspect, comprising corresponding steps or functions for performing the above method aspects Parts (means). The steps or functions may be implemented by software, or by hardware, or by a combination of hardware and software.

In one possible design, the communication device described above includes one or more processors and transceiver units. The one or more processors are configured to support the first or second wireless network device or user equipment to perform respective functions in the above methods. For example, spatial information of the second signal to be transmitted is determined according to the first signal. The transceiver unit is configured to support the first or second wireless network device or user equipment to communicate with other devices to implement a receiving/transmitting function. For example, receiving the first signal, transmitting the second signal, or transmitting the first signal, receiving the second signal, and the like.

Optionally, the communication device may further include one or more memories for coupling with the processor, which store program instructions and data necessary for the communication device. The one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.

The communication device may be a base station, a TRP or a user equipment (which may also be a terminal device), and the transceiver unit may be a transceiver or a transceiver circuit.

The communication device can also be a communication chip. The transceiver unit can be an input/output circuit or an interface of a communication chip.

The method, the device and the system provided by the embodiments of the present invention determine the uplink transmit beam by using the related information of the downlink receive beam, so that the UE can determine the spatial information of the uplink signal that is sent by the UE more efficiently.

For ease of understanding, the description of some of the concepts related to the present application is given by way of example. As follows:

Third Generation Partnership Project (English: 3 ^rd generation partnership project, referred to as 3GPP) is a wireless communications network dedicated to the development of the project. Generally, a 3GPP related organization is referred to as a 3GPP organization.

A wireless communication network is a network that provides wireless communication functions. The wireless communication network may use different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (English: time) Division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division Multiple Carrier (English: Single Carrier FDMA, SC-FDMA for short), Carrier Sense Multiple Access with Collision Avoidance (English: Carrier Sense Multiple Access with Collision Avoidance). According to the capacity, rate, delay and other factors of different networks, the network can be divided into 2G (English: generation) network, 3G network, 4G network or future evolution network, such as 5G network. A typical 2G network includes a global system for mobile communications/general packet radio service (GSM) network or a general packet radio service (GPRS) network. A typical 3G network is used. The network includes a universal mobile telecommunications system (UMTS) network. A typical 4G network includes a long term evolution (LTE) network. The UMTS network may also be referred to as a universal terrestrial radio access network (UTRAN). The LTE network may also be referred to as an evolved universal terrestrial radio access network (English: evolved universal terrestrial) Radio access network, referred to as E-UTRAN. According to different resource allocation methods, it can be divided into a cellular communication network and a wireless local area network (English: wireless local area networks, WLAN for short), wherein the cellular communication network is dominated by scheduling, and the WLAN is dominant. The aforementioned 2G, 3G and 4G networks are all cellular communication networks. It should be understood by those skilled in the art that the technical solutions provided by the embodiments of the present invention can be mainly applied to a wireless communication network after 4G, such as a 4.5G or 5G network, or other non-cellular communication networks. For the sake of brevity, embodiments of the present invention sometimes refer to a wireless communication network as a network.

The cellular communication network is a type of wireless communication network, which adopts a cellular wireless networking mode, and is connected between the terminal device and the network device through a wireless channel, thereby enabling users to communicate with each other during activities. Its main feature is the mobility of the terminal, and it has the function of handoff and automatic roaming across the local network.

FDD: frequency division duplex, frequency division duplex

TDD: time division duplex, time division duplex

User equipment (English: user equipment, abbreviated as UE) is a terminal device, which can be a mobile terminal device or a non-mobile terminal device. The device is mainly used to receive or send business data. User equipment can be distributed in the network. User equipments have different names in different networks, such as: terminals, mobile stations, subscriber units, stations, cellular phones, personal digital assistants, wireless modems, wireless communication devices, handheld devices, knees. Upper computer, cordless phone, wireless local loop station, car terminal, drone equipment, smart home, IoT equipment, etc. The user equipment can communicate with one or more core networks via a radio access network (RAN) (access portion of the wireless communication network), such as exchanging voice and/or data with the radio access network.

A base station (BS) device, also referred to as a base station, is a device deployed in a wireless access network to provide wireless communication functions. For example, a device that provides a base station function in a 2G network includes a base transceiver station (BTS) and a base station controller (BSC), and the device that provides the base station function in the 3G network includes the node B ( NodeB) and a radio network controller (RNC), the device providing the function of the base station in the 4G network includes an evolved NodeB (abbreviated as eNB), and in the WLAN, the device providing the function of the base station is Access point (AP). In the future 5G new radio (New Radio, NR for short), the device providing the function of the base station includes a node B (gNB) that continues to evolve, a transmission and reception point (TRP), and a transmission point (TP). Or relay, etc. The Node B, the TRP, and the TP may be a device including a baseband processing and a radio frequency part. The TRP and the TP may also be a radio unit (RU) or a remote radio unit (RRU). Among them, TRP is a commonly used name in NG, and TP is a commonly used name in LTE systems.

A wireless device refers to a device that is located in a wireless communication network and that can communicate wirelessly. The device may be a wireless network device, such as a base station, a user equipment, or other network elements.

A network-side device is a device located on the network side in a wireless communication network, and may be an access network element, such as a base station or a controller (if any), or may be a core network element or other network. yuan.

NR (new radio) refers to a new generation of wireless access network technology that can be applied to future evolved networks, such as 5G networks.

Wireless local area networks (WLANs) refer to local area networks that use radio waves as a data transmission medium. The transmission distance is generally only a few tens of meters.

An access point (AP) that connects to a wireless network and can also connect to a wired network device. It can be used as an intermediary point to connect wired and wireless Internet devices to each other and transmit data.

RRC (radio resource control): Radio resource control

The RRC processes the third layer information of the control plane between the UE and the network side device. Usually contains at least one of the following features:

The information provided by the non-access stratum of the broadcast core network. The RRC is responsible for broadcasting the network system information to the UE. System information is usually repeated according to certain basic rules, and RRC is responsible for execution planning, segmentation, and repetition. It also supports the broadcast of upper layer information.

Associate broadcast information to the access layer. The RRC is responsible for broadcasting the network system information to the UE. System information is usually repeated according to certain basic rules, and RRC is responsible for execution planning, segmentation, and repetition.

The RRC connection between the UE and the network side device is established, re-established, maintained, and released. In order to establish the first signal connection of the UE, an RRC connection is established by the higher layer of the UE. The RRC connection setup procedure includes several steps of reselection of available cells, access grant control, and establishment of a layer 2 signal link. The RRC connection release is also requested by the upper layer to tear down the last signal connection; or when the RRC link fails, it is initiated by the RRC layer. If the connection fails, the UE will request to re-establish an RRC connection. If the RRC connection fails, the RRC releases the allocated resources.

The above description of the RRC is merely an example and may vary as the network evolves.

DRAWINGS

Figure 1 is a schematic diagram of a communication system (only base station and UE are shown);

2 is a simplified schematic diagram of an internal structure of a base station and a UE according to an embodiment of the present invention;

3a and 3b are schematic views of an emission angle and a reception angle described in an embodiment of the present invention;

FIG. 4 is a schematic diagram of a DPS scenario according to an embodiment of the present invention;

5a, 5b, 5c and 5d are schematic flowcharts of a method for signal transmission according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of an apparatus (such as a wireless network device) for signal transmission according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of another apparatus (such as a user equipment) for signal transmission according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be described in conjunction with the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

As used herein, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, which may be hardware, firmware, a combination of hardware and software, software, or in operation. software. For example, a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread in execution, a program, and/or a computer. As an example, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution, and a component can be located in a computer and/or distributed between two or more computers. Moreover, these components can execute from various computer readable media having various data structures thereon. These components may be passed, for example, by having one or more data packets (eg, data from one component that interacts with the local system, another component of the distributed system, and/or signaled through, such as the Internet) The network interacts with other systems to communicate in a local and/or remote process.

Moreover, the present application describes various aspects in connection with a wireless device, which may be a wireless network device or a terminal device. The wireless network device may be a base station, the base station may be used to communicate with one or more user equipments, or may be used to communicate with one or more base stations having partial user equipment functions (such as a macro base station and a micro base station, such as Incoming, communication between the two); the wireless device can also be a user equipment, the user equipment can be used for communication (such as D2D communication) of one or more user equipments, and can also be used for communication with one or more base stations. User equipment may also be referred to as user terminals and may include systems, subscriber units, subscriber stations, mobile stations, mobile wireless terminals, mobile devices, nodes, devices, remote stations, remote terminals, terminals, wireless communication devices, wireless communication devices, or Some or all of the features of the user agent. User equipment can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, smart phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), laptop computers, handheld communication devices, handheld computing Devices, satellite wireless devices, wireless modem cards, in-vehicle devices, smart homes, drone devices, IoT devices, and/or other processing devices for communicating over wireless systems. A base station may also be referred to as an access point, a node, a Node B, an evolved Node B (eNB), a TRP, a TP, a gNB, or some other network entity, and may include some or all of the functions of the above network entities. The base station can communicate with the wireless terminal over the air interface. This communication can be done by one or more sectors. The base station can act as a router between the wireless terminal and the rest of the access network by converting the received air interface frame to an IP packet, wherein the access network includes an Internet Protocol (IP) network. The base station can also coordinate the management of air interface attributes and can also be a gateway between the wired network and the wireless network. For example, the base station may be an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), and a base station controller (BSC). , base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (BBU), wireless fidelity (WIFI) system Access point (AP), wireless relay node, wireless backhaul node, transmission point (TRP or transmission point, TP), etc., can also be 5G, such as NR, gNB in the system Or, a transmission point (TRP or TP), one or a group of base stations (including multiple antenna panels) in the 5G system, or, alternatively, a network node constituting a gNB or a transmission point, such as a baseband unit (BBU) ), or, distributed unit (DU, distributed unit), etc. . In some deployments, the gNB may include a centralized unit (CU) and a DU. The gNB may also include a radio unit (RU). The CU implements some functions of the gNB, and the DU implements some functions of the gNB. For example, the CU implements radio resource control (RRC), the function of the packet data convergence protocol (PDCP) layer, and the DU implements the wireless chain. The functions of the radio link control (RLC), the media access control (MAC), and the physical (PHY) layer. Since the information of the RRC layer eventually becomes information of the PHY layer or is transformed by the information of the PHY layer, high-level signaling, such as RRC layer signaling or PHCP layer signaling, can also be used in this architecture. It is considered to be sent by the DU or sent by the DU+RU. It can be understood that the network device can be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into network devices in the access network RAN, and the CU may be divided into network devices in the core network CN, which is not limited herein.

In the embodiment of the present invention, the TRP and the communication between the TRP and the UE are taken as an example for description. It can be understood that the technical solution provided by the embodiment of the present invention may also be extended to between a UE and a UE (such as a device to device, a D2D communication scenario), or may be extended to a base station and a base station (such as a macro base station and a micro base station). Between ), it can also be extended to other wireless network devices except TRP.

The application will present various aspects, embodiments, or features in a system that can include multiple devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules, etc. discussed in connection with the figures. In addition, a combination of these schemes can also be used.

In addition, in the embodiments of the present invention, the word "exemplary" is used to mean an example, an illustration, or an illustration. Any embodiment or design described as "example" in this application should not be construed as preferred or advantageous over other embodiments or designs. Rather, the term use examples are intended to present concepts in a concrete manner.

In the embodiment of the present invention, information, signal, message, and channel may sometimes be mixed. It should be noted that the meaning to be expressed is consistent when the difference is not emphasized. "of", "corresponding (relevant)" and "corresponding" can sometimes be mixed. It should be noted that the meaning to be expressed is consistent when the distinction is not emphasized.

Embodiments of the present invention, as is sometimes the subscript W ₁ may form the subject of the non-typo as W1, while not emphasize the difference, to express their meaning is the same.

The network architecture and the service scenario described in the embodiments of the present invention are used to more clearly illustrate the technical solutions of the embodiments of the present invention, and do not constitute a limitation of the technical solutions provided by the embodiments of the present invention. The technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems.

The embodiment of the present invention can be applied to a time division duplex (TDD) scenario or a frequency division duplex (FDD) scenario.

The embodiments of the present invention can be applied to a UE-centric communication scenario, in addition to being applicable to some existing communication scenarios.

Optionally, in a future UE-centric network, a non-cell network architecture is introduced, that is, a large number of small stations are deployed in a specific area to form a super cell ( Hyper cell), each station is a transmission point (TP) or TRP of the Hyper cell, and is connected to a centralized controller.

Optionally, in the UE-centric system, the UE may periodically send an uplink measurement reference signal, and after receiving the reference signal sent by the UE, the network side device may select an optimal TP and/or TRP set for the UE. Cluster, sub-cluster) for its services. When the UE moves within the Hyper cell, the network side device selects a new sub-cluster for the UE to serve, thereby avoiding true cell handover and achieving continuity of the UE service. The network side device includes a wireless network device.

The scenario in the embodiment of the present invention is described by taking a scenario of a 4G network in a wireless communication network as an example. It should be noted that the solution in the embodiment of the present invention may also be applied to other wireless communication networks, and corresponding names may also be used in other scenarios. The name of the corresponding function in the wireless communication network is replaced.

FIG. 1 is a schematic structural diagram of a communication system. The communication system can include a core network, an access network, and a terminal. Only the wireless network devices included in the access network, such as base stations, and terminals, such as user equipment, are shown in FIG.

2 is a simplified schematic diagram of the internal structure of a base station and a UE.

Exemplary base stations may include an antenna array, a duplexer, a transmitter (TX), and a receiver (RX) (sometimes, TX and RX are collectively referred to as transceiver TRX), and a baseband processing portion. Among them, the duplexer is used to implement the antenna array for both transmitting signals and receiving signals. TX is used to convert between RF signal and baseband signal. Usually TX can include power amplifier PA, digital-to-analog converter DAC and frequency converter. Usually RX can include low noise amplifier LNA, analog-to-digital converter ADC and frequency converter. The baseband processing section is used to implement processing of transmitted or received signals, such as layer mapping, precoding, modulation/demodulation, encoding/decoding, etc., and for physical control channels, physical data channels, physical broadcast channels, reference signals, etc. Perform separate processing.

In an example, the base station may further include a control portion for performing multi-user scheduling and resource allocation, pilot scheduling, user physical layer parameter configuration, and the like.

Exemplary UEs may include an antenna, a duplexer, a transmitter (TX), and a receiver (RX) (sometimes, TX and RX are collectively referred to as transceiver TRX), and a baseband processing portion. In Figure 2, the UE has a single antenna. It can be understood that the UE can also have multiple antennas (ie, an antenna array).

Among them, the duplexer is used to implement the antenna array for both transmitting signals and receiving signals. TX is used to convert between RF signal and baseband signal. Usually TX can include power amplifier PA, digital-to-analog converter DAC and frequency converter. Usually RX can include low noise amplifier LNA, analog-to-digital converter ADC and frequency converter. The baseband processing section is used to implement processing of transmitted or received signals, such as layer mapping, precoding, modulation/demodulation, encoding/decoding, etc., and for physical control channels, physical data channels, physical broadcast channels, reference signals, etc. Perform separate processing.

In an example, the UE may further include a control part, configured to request an uplink physical resource, calculate channel state information (CSI) corresponding to the downlink channel, determine whether the downlink data packet is successfully received, or the like.

In the current 5G study, beam alignment on the TRP side and the UE side is an important issue.

Beam refers to the adjustment of the weight on the antenna (port) so that the energy of the transmitted and/or received signals has a certain directivity (ie, concentrated in a certain direction). Such aggregation is called a beam. Wherein, corresponding to the transmitted signal is a transmit beam, and for the received signal is a receive beam. The transmit beam and the receive beam can be referred to as a beam pair.

From the process of the NR discussion, the beam in the NR is divided into the TRP side and the UE side, and the TRP and the UE can respectively form a digital beam by precoding at the baseband and an analog beam by the phase shifter at the radio frequency. Since Massive MIMO technology will be applied in NR, a large number of antennas can make the formed beam have high resolution and the beam is narrow. In this case, the directivity of the beam is more pronounced. Therefore, there is a certain requirement for the alignment of the transmit beam and the receive beam (referred to as beam alignment).

The discussion of current beam alignment is mainly focused on the downlink, which is generally obtained by beam scanning to obtain several beam pairs. The downlink beam scanning may be: the TRP forms and transmits multiple downlink beams (also referred to as downlink transmitting beams), and the UE receives multiple downlink beams. In the process of the UE receiving multiple downlink beams, the UE may pass the phase of the phase shifter. The weighting of the antenna ports in the handover and/or baseband is adjusted to form a plurality of downlink receive beams (also referred to as downlink beams), so that the optimal downlink is determined by scanning and measuring multiple downlink transmit beams and multiple downlink receive beams. A beam pair, wherein the downlink beam pair includes a pair of downlink transmit beams (TRP side) and a downlink receive beam (UE side). The downlink transmit beam and the downlink receive beam are further determined.

Similarly, the UE transmits multiple uplink beams (also referred to as uplink transmit beams), the TRP receives multiple uplink beams, and the TRP passes phase shift and/or baseband of the phase shifter during the TRP receiving multiple uplink beams. The weight adjustment of the middle antenna port may form multiple uplink receive beams, which may be determined by scanning and measuring multiple uplink transmit beams (also referred to as uplink beams) and multiple uplink receive beams (also referred to as uplink beams). The best uplink beam pair, wherein the uplink beam pair includes a pair of uplink transmit beams (UE side) and an uplink receive beam (TRP side).

However, the determination of such uplink beam pairs requires multiple scans and measurements between the UE and the TRP. In the present application, a method for determining an uplink transmit beam is proposed, that is, by using the spatial reciprocity of a beam, an angle of departure (AoD) of an uplink transmit beam is defined as an angle of arrival of a downlink receive beam ( The angle of arrival (AoA) is inferred, that is, the transmission angle of the uplink transmit beam may be determined according to the arrival angle of the downlink receive beam, and may be determined according to the relationship between the transmit angle of the uplink transmit beam and the arrival angle of the downlink receive beam. For example, the relationship may be that the transmission angle of the uplink transmit beam is the same as the arrival angle of the downlink receive beam. It can be understood that this relationship can also be other situations. For example, the relationship may be pre-defined by the protocol, and may be pre-stored on the UE side or configured by the TRP, which is not limited herein. In this way, after the UE determines the downlink receive beam, the corresponding uplink transmit beam can be determined. Among them, a schematic diagram of the emission angle and the angle of arrival is given in Figures 3a and 3b. The angle of arrival (AoA) is the angle between the direction of arrival of the signal and a certain direction (such as the horizontal direction), and the angle of emission, also called the angle of departure (AoD), is the direction of the signal. The angle between a certain direction (such as the horizontal direction). For the case of multiple paths, the algorithm for estimating the estimated AoA/AoD may be specifically referred to by the UE, and is not described in detail herein. The case where the strongest path among the plurality of paths is taken as an example is shown in FIGS. 3a and 3b.

In addition, the angle of arrival of the uplink receiving beam on the TRP side may also be related to the transmission angle of the downlink transmitting beam. That is, the angle of arrival of the uplink receiving beam on the TRP side may also be determined according to the transmission angle of the downlink transmitting beam. The relationship between the angle of arrival of the uplink receive beam on the TRP side and the transmission angle of its downlink transmit beam is determined. For example, the relationship may be that the transmission angle of the downlink transmit beam is the same as the arrival angle of the uplink receive beam. It can be understood that this relationship can also be other situations. For example, the relationship may be pre-defined by the protocol, and may be pre-stored on the TRP side or configured by the TRP, which is not limited herein.

In this way, the transmission angle of the uplink transmit beam and the angle of arrival of the uplink receive beam can be determined in a relatively simple manner.

However, in the NR communication, there may be a case where the UE receives multiple downlink beams. In this case, the UE has multiple arrival angles of the downlink reception beams, and how does the UE determine the transmission angle of the uplink transmission beam and which downlink reception beam arrives? Angle, or how the UE determines which of the uplink transmit beams that have been obtained by scanning and measuring, which needs further discussion. For example, the scenario in which the UE receives multiple downlink beams includes a single base station MIMO application, or due to some communication scenarios, such as a CoMP scenario, such as joint tranmission (JT), dynamic point selection (dynamic point selection, DPS), or due to multi-panel communication. As shown in FIG. 4, it is a schematic diagram of a DPS scenario. In this scenario, the UE receives downlink data from only one TRP at a time, such as a signal on the physical downlink shared channel PDSCH, that is, the UE dynamically receives beams from multiple TRPs. However, the feedback of the UE's uplink channel state information should remain in communication with the serving cell, rather than being sent to the cooperating cell. Therefore, if the UE determines the direction of the uplink transmission based on the beam direction of the downlink data being transmitted, the problem that the serving cell that needs to receive the uplink channel state information cannot receive the signal. Therefore, in this scenario, the UE needs to instruct the UE to uplink transmit downlink resources to be referenced, so as to avoid the problem of beam gain loss or even communication interruption of uplink transmission.

One possible way is that the UE and the TRP form a plurality of uplink beam pairs by uplink beam scanning and measurement. The TRP sends the resource information of the uplink signal to be sent by the UE, such as the antenna port number of the reference signal, and/or the resource information of the uplink receiving beam of the uplink signal to be received by the TRP, so that the UE can determine the information according to the information. The uplink transmit beam corresponding to the uplink signal to be transmitted, and/or the TRP can determine the uplink receive beam corresponding to the uplink signal to be received according to the information.

The embodiment of the present invention provides another possible manner, the UE determines, according to the downlink signal received from the TRP, an uplink transmit beam corresponding to the uplink signal to be sent.

The method provided in the embodiment of the present invention can be applied to the TRP and the UE having the downlink beam pair, and the uplink beam pair is not obtained by scanning and measuring, and can also be applied to the TRP and the UE having the downlink beam pair and scanning and The measurement is obtained in the case of obtaining an uplink beam pair.

A possible solution, as shown in Figure 5a, includes:

S1. The user equipment receives the first signal from the first wireless network device.

S2. The user equipment determines spatial information of the second signal to be sent according to the first signal, and sends the second signal to be sent by using the spatial information.

Optionally, the spatial information of the second signal includes an emission angle (starting angle) of the second signal, and an emission angle of the second signal is determined according to an angle of arrival of the first signal.

It can be understood that determining the emission angle of the second signal according to the arrival angle of the first signal may include:

The emission angle of the second signal is the same as the angle of arrival of the first signal, or

The emission angle of the second signal has a certain correspondence with the angle of arrival of the first signal, or

According to the angle of arrival of the first signal, the transmission angle of the uplink beam is selected from the existing uplink beam pairs as the transmission angle of the second signal. For example, the emission angle of the uplink beam closest to the angle of arrival of the first signal is selected as the emission angle of the second signal.

Optionally, there may be implementations as shown in any one of Figures 5b, 5c and 5d, which are described as follows:

The implementation shown in Figure 5b includes:

S101, the second wireless network device sends the first indication information to the user equipment, and correspondingly, the user equipment receives the first indication information from the second wireless network device, where the first indication information is used to indicate the second signal and the first A signal has a quasi co-location relationship with respect to spatial information.

Wherein, the quasi-co-location relationship of the second signal and the first signal with respect to the spatial information may refer to:

The spatial information of the second signal can be inferred by the spatial information of the first signal, wherein the spatial information can include an Angle of Arrival (AoA, also referred to as an angle of arrival or a reception angle), and an Angle of departure (Angle of departure) , AoD, which may also be referred to as a departure angle or an emission angle, at least one of an Angle of arrival spread, an Angle of departure spread, and a spatial correlation.

Optionally, the second signal and the first signal have a quasi-co-location relationship with respect to the spatial information, including:

The resource information of the second signal and the resource information of the first signal have a quasi-co-location relationship with respect to the spatial information, that is, the spatial information of the resource information of the second signal can be inferred according to the spatial information of the resource information of the first signal, where The resource information includes at least one of resource identification information, antenna port information, channel state information measurement setting identification information, and process identification information.

Optionally, the first indication information may be sent by using the high layer signaling or the physical layer signaling.

Optionally, the first signal includes a non-zero power reference signal.

Optionally, the non-zero power reference signal included in the first signal is a non-zero power reference signal for obtaining channel state information, a non-zero power reference signal for demodulation, and a non-zero power At least one of a beam-managed reference signal, a synchronization signal, and a tracking reference signal Tracking RS for time and frequency synchronization tracking. For example, in the LTE system, the reference signal used to obtain channel state information may be a channel state information-reference signal (CSI-RS), and the reference signal used for demodulation may be a demodulation reference signal. (demodulation reference signal, DMRS). In the NR system, the reference signal used to obtain channel state information may be a CSI-RS, or may be another reference signal having a function of obtaining channel state information, and the reference signal used for demodulation may be a DMRS, or may be used for other purposes. For the reference signal of the demodulation function, the reference signal for beam management may be a beam management reference signal (BMRS), and the reference signal for beam management may be used for measurement of large-scale characteristics of the beam, and further Used for beam scanning, alignment and correction, such as by measuring the gain in large-scale characteristics, using the beam pair with the largest gain as a pair of beam pairs.

Optionally, the second signal includes a reference signal. The reference signal can be a non-zero power reference signal or a zero power reference signal.

Optionally, the reference signal included in the second signal is at least one of a reference signal used for demodulation and a reference signal used for uplink channel measurement. For example, in the LTE system, the reference signal used for demodulation may be a DMRS, and the reference signal used for uplink channel measurement may be a sounding reference signal (SRS). In the NR system, the reference signal used for demodulation may be a DMRS, or may be other reference signals for demodulation functions; the reference signal used for uplink channel measurement may be SRS, or other uplink channel measurement functions may be used. Reference signal.

In an optional manner, the first indication information may be included in a domain for indicating quasi-co-location information, such as a physical downlink shared channel resource element mapping and a quasi-co-location indication domain (PDSCH RE Mapping) in an LTE system. And Quasi-Co-Location Indicator field, PQI).

In version 3 of the 3rd Generation Partnership Project (English: 3rd Generation Partnership Project, 3GPP), LTE introduced the antenna port quasi-co-location, which is referred to as QCL (Quasi Co- in the LTE system). Located) concept. Signals sent from the QCL's antenna port will pass the same large-scale fading. Large-scale fading includes delay spread, Doppler spread, Doppler shift, average channel gain, and average delay. In order to support the terminal device (ie, the user equipment) to receive the downlink control information from the serving TRP (the TRP to which the serving cell belongs) through the PDCCH, the downlink data is received from the cooperative TRP (the TRP to which the coordinated cell belongs) through the PDSCH, and a new type is defined in the version 11 The transmission mode, that is, the transmission mode 10 (TM10), mainly introduces the foregoing physical downlink shared channel resource element mapping and quasi-co-location indication (PQI), which is used to indicate which TRP the downlink data is sent from. The corresponding large-scale characteristics of the channel are consistent with which set of antenna ports. In this way, the UE can know the radio channel parameters corresponding to which group of antenna ports are used to demodulate the downlink data according to the PQI and the PDSCH mapping message element configured by the Radio Resource Control (RRC) signaling. .

Specifically, for a UE configured with TM10, there are two QCL assumptions, QCL type (Type) A and Type B. In Type A, all ports of the serving cell are QCL. In Type B, the antenna port corresponding to the non-zero power channel state information reference signal (NZP CSI-RS) resource indicated by the PDSCH antenna port and the upper layer parameter is QCL. An excerpt from the description in the agreement is as follows:

-Type A: The UE may assume the antenna ports 0–3,7–30 of a serving cell are quasi co-located(as defined in[3])with respect to delay spread,Doppler spread,Doppler shift,and average delay .

-Type B: The UE may assume the antenna ports 15–30 corresponding to the CSI-RS resource configuration identified by the higher layer parameter qcl-CSI-RS-ConfigNZPId-r11(defined in subclause 7.1.9) and the antenna ports 7 –14 associated with the PDSCH are quasi co-located(as defined in[3])with respect to Doppler shift,Doppler spread,average delay,and delay spread.

Wherein, Type A: The UE can assume that the antenna ports 0-3, 7-30 of the serving cell are QCLs for delay spread, Doppler spread, Doppler shift and average delay.

Type B: The UE can assume that the antenna port 15-30 corresponding to the CSI-RS resource configured by the higher layer parameter qcl-CSI-RS-ConfigNZPID-r11 and the antenna port 7-14 associated with the physical downlink shared channel (PDSCH) are related. Delay spread, Doppler spread, Doppler shift and average delay QCL.

The antenna port 15-30 is an antenna port of the CSI-RS, and the antenna port 7-14 is an antenna port of the PDSCH, and the DMRS antenna port is generally consistent with the PDSCH. Thus, Type B also indicates the CSI-RS antenna port that has a QCL relationship with the DMRS antenna port.

For example, a plurality of sets of possible parameter sets may be sent (also referred to as configurations) by high-level signaling, such as radio resource control (RRC) signaling. For example, in an LTE system, four groups are used. A possible set of parameters is issued. Through physical layer signaling, such as DCI signaling, a group of four sets of possible parameter sets to be activated is indicated.

Specifically, in the LTE system, the foregoing group for indicating that the four sets of possible parameter sets need to be activated is a PDSCH RE Mapping and Quasi-Co-Location Indicator (PQI) domain.

One of the parameters included in the parameter set delivered by the high-layer signaling is an identifier for indicating a CSI-RS resource having a QCL relationship with a PDSCH resource configured by the parameter set, for example, qcl-CSI-RS-ConfigNZPId-r11 This domain.

The identity of the CSI-RS resource (identity or identifier, ID) indicates the resource configuration of a group of CSI-RSs.

For example, the identifier of the CSI-RS resource may be csi-RS-ConfigNZPId. Correspondingly, the configuration of each CSI-RS resource includes the number of antenna ports of the CSI-RS resource (for example, an antennaPortsCount-r11 cell (which may also be a domain)) , resource configuration (such as resourceConfig-r11 cell), subframe configuration (such as subframeConfig-r11 cell), scrambling identifier (such as scramblingIdentity-r11 cell), and CRS with QCL relationship with the CSI-RS resource (public) One or more of the reference signal (common reference signal) (eg, qcl-CRS-Info-r11 cell).

For example, the cells included in the resource configuration of a group of CSI-RSs may be as follows (3GPP TS 36.211):

The foregoing PQI domain may be delivered by DCI (downlink control information) format 2D. For example, the PQI domain may occupy 2 bits.

For example, the meaning of PQI 2bit can be as follows:

In this way, the UE can know which one of the parameter sets used by using the received Quasi-Co-Location Indicator field signaling, and can know the CSI-RS port and the CRS port according to the configuration in the CSI-RS in the parameter set. The relationship, in turn, can be used to know the CRS port to be referred to for demodulation, frequency offset correction, etc. when receiving the PDSCH corresponding to the parameter set.

Specifically, delay spread, Doppler spread, Doppler shift and average delay are large-scale parameters, one antenna port, such as antenna port A and another antenna port, such as antenna port B, The QCL of the large-scale parameter means that the large-scale parameter of the channel of the antenna port B can be inferred by the large-scale parameter of the channel obtained by the antenna port A. Large scale parameters can also include Average gain. Further, spatial information (also referred to as a spatial parameter) may also be included. The spatial information may include an Angle of Arrival, an Angle of departure (also referred to as an emission angle), an Angle of arrival spread, an Angle of departure spread, At least one of spatial correlations. Among them, the spatial correlation can be related to the correlation matrix of the signal. An element in the correlation matrix of the signal is used to describe the correlation between the two antenna elements. The antenna unit may be an antenna element or an antenna panel, or may be another antenna unit, which is not limited herein.

With the advent of multi-panel TRP antennas, QCL can also be applied to multi-panel transmissions.

In the present application, the QCL hypothesis may further include: a QCL of the foregoing second signal and the first signal with respect to spatial information.

For example, to define a QCL relationship between a CSI-RS and an uplink SRS, where spatial information is a departure angle and an angle of arrival, the description of Type B in the QCL hypothesis may further include:

The UE may assume the antenna ports 15-30 corresponding to the CSI-RS resource configuration identified by the higher layer parameter qcl-Csirs-UplinkSRS and the antenna ports 40-43 are quasi co-located with respect to Angle of arrival/Angle of departure .

That is, the UE can assume that the antenna ports 15-30 and antenna ports 40-43 corresponding to the CSI-RS resources indicated by the higher layer parameter qcl-Csirs-UplinkSRS are QCLs regarding the angle of arrival and the departure angle.

The antenna ports 40-43 may be uplink SRS ports.

Specifically, the second wireless network device may send multiple sets of parameter sets for data transmission by using high-layer signaling, such as RRC signaling. For example, each set of parameter sets may include content such as the content of the pre-determined parameter set. (It may not include part of the foregoing parameter set, which is not limited herein). Further, it further includes resource information, such as a resource identifier, for indicating a first signal having a QCL relationship with the second signal. For example, if the second signal is an uplink SRS and the first signal is a CSI-RS, the resource identifier of the CSI-RS may be included in each set of parameter sets. Since each set of parameter sets further includes a resource identifier of a CSI-RS having a QCL relationship with the PDSCH, a combination of a resource identifier of a CSI-RS having a QCL relationship with a PDSCH and a CSI-RS resource identifier having a QCL relationship with an uplink SRS (ie, joint coding), the number of parameter sets can be determined, and the index information of the parameter sets having different combinations can be obtained. For example, there may be four resource identifiers of a CSI-RS having a QCL relationship with a PDSCH, and four CSI-RS resource identifiers having a QCL relationship with an uplink SRS, and 16 parameter sets having different combinations of the combinations. .

Further, the second wireless network device may send a field, such as a PQI, for indicating the quasi co-location information to the UE, to send the foregoing first indication information to the UE.

Optionally, the domain used to indicate the quasi-co-location information may be delivered by using DCI.

Optionally, the domain used to indicate the quasi-co-location information may also be delivered by using high layer signaling.

For example, if there are 16 parameter sets having different combinations of the foregoing, the parameter set used by the UE may be indicated by a 4-bit domain, that is, the first indication information is the 4-bit domain, and the domain may indicate the quasi-common Address information. The UE learns the resource identification information of the CSI-RS having the QCL relationship with the uplink SRS included in the parameter set according to the 4-bit domain from the second radio network device. In addition, since the parameter set further includes resource identification information of a CSI-RS having a QCL relationship with the PDSCH resource, the UE may also obtain information about a PDSCH resource having a QCL relationship with the uplink SRS, such as information of a DMRS antenna port. The 16 parameter sets and the numbers 16 and 4 in the 4 bit field are exemplified, and may be other values, which are not limited herein.

The plurality of sets of parameter sets for data transmission may be included in a domain of higher layer signaling, and the set of parameters may include at least one of the following parameters:

The number of ports of the cell reference signal, the port number of the cell reference signal, the frequency domain position indication of the cell reference signal, and the time domain position indication of the cell reference signal,

a resource indication of the synchronization signal (the resource includes at least one of a time domain resource, a frequency domain resource, or a beam resource, optionally, the indication may be an index or an identifier), and the time domain unit indication in which the synchronization signal is located (where The time domain unit may be one or more of a subframe, a time slot, an OFDM symbol, or a minislot, which may be an index or an identifier, for example,

Multimedia broadcast multicast service single frequency network (MBSFN) configuration information (example, the configuration information may be a time domain unit format of MBSFN transmission, which is used to indicate a time domain unit occupied by MBSFN transmission, The time domain unit can be one or more of a subframe, a time slot, a symbol, or a mini time slot)

a resource indication of a zero-power signal CSI-RS for obtaining a channel state,

The resource location indication of the downlink data channel (such as the physical downlink shared channel PDSCH) (example, the resource location may be a time domain of the PDSCH, a frequency domain resource location, where the time domain location may be a time domain resource occupied by the PDSCH, such as a PDSCH The starting and/or ending OFDM symbols, the frequency domain location may refer to the frequency domain resources occupied by the PDSCH),

A resource indication of a signal CSI-RS for obtaining a channel state for indicating a non-zero power of a QCL relationship of a downlink DMRS (the resource indication may be used to indicate a time-frequency position and/or sequence of CSI-RS pilots, an example The resource indication, which may be a resource identifier of the CSI-RS, is used to indicate a large-scale parameter indication of a QCL relationship of the downlink DMRS (the indication is used to indicate a large-scale parameter having a QCL relationship with the CSI-RS, for example, The indication may be a large-scale parameter type indication for indicating a QCL relationship between the CSI-RS and the DMRS, and may also be a large-scale parameter indication for indicating a QCL relationship between the CSI-RS and the DMRS,

A resource identification indication of a signal CSI-RS for obtaining a channel state for indicating a non-zero power of a QCL relationship of an uplink SRS, a signal CSI for obtaining a channel state for indicating a non-zero power of a QCL relationship of an uplink SRS The port indication of the RS, the time-frequency position indication of the signal CSI-RS for obtaining the channel state of the non-zero power indicating the QCL relationship of the uplink SRS, and the resource indication of the downlink DMRS for indicating the QCL relationship of the uplink SRS, a port (group) indication of a downlink DMRS indicating a QCL relationship of the uplink SRS, a time-frequency position indication of a downlink DMRS for indicating a QCL relationship of the uplink SRS, and a resource indication for indicating a synchronization signal of a QCL relationship of the uplink SRS (eg, The time domain unit in which the synchronization signal is located indicates the resource number of the synchronization signal, etc., and is used to indicate a large-scale parameter indication of the QCL relationship of the uplink SRS.

In the present application, the definition of QCL can refer to the definition of QCL in 5G. In the new wireless NR system, the definition of QCL is: the signal transmitted from the antenna port of QCL will undergo the same large-scale fading, wherein large-scale fading It includes one or more of the following parameters: delay spread, Doppler spread, Doppler shift, average channel gain, average delay and airspace parameters. The airspace parameter can be the emission angle (AOA), the main emission angle. (Dominant AoA), Average AoA, Angle of Arrival (AOD), Channel Correlation Matrix, Power Angle Spread Spectrum of Angle of Arrival, Average AoD, Power Angle Spread Spectrum of Departure Angle, Transmit Channel Correlation One or more of Sex, Receive Channel Correlation, Transmit Beamforming, Receive Beamforming, Spatial Channel Correlation, Filters, Spatial Filter Parameters, or Spatial Receive Parameters.

In this application, the indication may be an identifier or an index, which is not limited herein.

In this application, the time domain unit may be one or more of a subframe, a time slot, an OFDM symbol, or a mini-slot.

In this way, the UE may determine, by using the first indication information, a parameter set that is activated in the multiple sets of parameter sets, and obtain corresponding parameters, for example, knowing the QCL relationship between the DMRS receiving the PDSCH and the CSI-RS, and transmitting the SRS and the first The QCL relationship of a signal.

In another optional manner, the first indication information is included in the downlink control information, where the downlink control information further includes information for indicating uplink scheduling related information, where the uplink scheduling related information includes: when uplinking At least one of a frequency mapping position and a modulation coding mode.

In this manner, the first indication information is not included in the domain for indicating the QCL information, such as PQI, but the other indication information is carried by other bits (domains), such as by the uplink QCL indication field (Uplink Quasi- Co-Location Indicator), the field includes a number of bits, and the binary value of the several bits or each of the bits (in the form of a bitmap) may indicate information of the first signal having a QCL relationship with the second signal. The number of bits of these bits is related to the number of pieces of information of the first signal having a QCL relationship with the second signal. For example, if the first signal is a CSI-RS, and the resource identifier of the first signal is four, the number of bits of the several bits may be two, where “00”, “01”, “10”, “11” respectively indicate 4 One of the CSI-RS resource identifiers, or the number of bits of the number of bits may be four, and each bit corresponds to one of the four CSI-RS resource identifiers. Optionally, one bit of 1 may indicate corresponding The CSI-RS resource identifier is activated, and 0 indicates that the corresponding CSI-RS resource identifier is not activated.

Optionally, the uplink QCL indication field may be a domain dedicated to indicating a QCL relationship between the second signal and the first signal, or the uplink QCL indication domain may be included in an SRS request domain (such as in an SRS request domain). Field). The SRS request field is an SRS request sent by the base station to the UE in the downlink control information, where the SRS request field is used to trigger the UE to send the SRS, or the closed loop power control parameter used to instruct the UE to send the uplink signal.

Optionally, the first indication information, such as an uplink QCL indication field, may be a domain that is carried in the DCI and is dedicated to indicating a QCL relationship between the second signal and the first signal, or the first indication information may be A joint indication with other indication information, such as the first indication information, may be jointly indicated with the indication information of the SRS request. Specifically, the SRS request field is an SRS request that is sent by the base station to the UE in the downlink control information, where the SRS request field is used to trigger the UE to send the SRS. Optionally, the information field may also be used to indicate that the UE sends the uplink signal. Closed loop power control parameters. Specifically, the first radio network device may send downlink control information to the UE, where the downlink control information may carry an SRS request field, where the SRS request field is used to indicate that the UE sends the SRS information, where the SRS request domain may also be used for the first indication information. The partial field of the SRS request field may represent the first indication information, or the indication bit representation of the SRS request field may represent the first indication information.

Optionally, the first indication information may be included in an information field used to indicate uplink scheduling related.

S102. The first wireless network device sends a first signal to the user equipment. Correspondingly, the user equipment receives the first signal from the first wireless network device. The first wireless network device may be the same as the second wireless network device, that is, It can also be different for the same wireless network device.

Optionally, the first wireless network device may be a wireless network device to which the serving cell of the user equipment belongs, or may be a wireless network device to which the coordinated cell of the user equipment belongs; the second wireless network device may be a service cell to which the user equipment belongs. Wireless network device.

S103. The user equipment determines spatial information of the second signal according to the first signal, and sends the second signal to the first wireless network device by using spatial information of the second signal.

Optionally, the spatial information of the second signal includes an emission angle of the second signal, and an emission angle of the second signal is determined according to an angle of arrival of the first signal.

Further, the first wireless network device may further determine a reception angle of arrival of the second signal according to the first signal, and receive the second signal by using the reception angle of arrival.

Further, an operation mode for determining spatial information may be as follows: the UE adjusts the weight value of the physical and/or logical antenna, such as adjusting the phase of the analog phase shifter and/or adjusting the precoding matrix of the digital precoding to adjust the weight value. , thereby forming an array of weights. The UE may adjust the weights to form a reception weight matrix when receiving the signal. The purpose of the UE to form the receive matrix is to optimize signal reception performance, reduce interference, and the like. The UE may obtain the receiving spatial information of the first signal according to the energy distribution of the first signal in the air domain, thereby selecting the receiving matrix receiving signal that the UE considers to be the most suitable. For example, receiving the first signal according to the energy distribution of the first signal in the air domain. The spatial information may include a correlation matrix obtained from a spatial power spectrum of the signal by a mathematical transformation such as a Fourier transform. The weights adjusted when the signal is transmitted form a transmission weight matrix.

Further, when the first signal includes multiple signals, the UE determines spatial information of the second signal according to spatial information of the plurality of signals in the first signal. Specifically, the UE may process the multiple signals in the first signal to obtain spatial information of the second signal, such as the spatial or angular domain or beam domain information corresponding to the spatial information of each signal in the first signal. The spatial or angular domain or beam domain information as the second signal; or the spatial or angular domain or beam domain information corresponding to the spatial information of the partial signal in the first signal by the UE as the spatial or angular domain or beam of the second signal Domain information. Further, the UE may use the spatial information of the partial signal in the first signal as the useful signal spatial information, and the UE may use the spatial information of the partial signal in the first signal as the interference spatial information, and the UE may obtain the spatial information of the second signal. The spatial or angular domain or beam domain information corresponding to the partial signal of the first signal is used as the useful signal spatial information, and the spatial or angular domain or beam domain information corresponding to the partial signal is used as the interference spatial information. A useful signal can also be referred to as a channel.

Further, when the second signal includes multiple signals, the UE may use the same or similar spatial information for the multiple signals corresponding to the second signal.

For example, the first signal includes multiple signals, which may indicate that the first signal includes multiple CSI-RS resources, or a CSI-RS port; the second signal includes multiple signals, which may indicate that the first signal includes multiple SRS resources, or SRS port.

Optionally, the UE may use the receiving direction of the first signal as a reference for the sending direction of the second signal.

For example, the UE may adjust the transmit antenna weight such that the transmit weight matrix of the second signal and the receive weight matrix of the first signal have a conjugate matrix relationship. Optionally, the conjugate matrix relationship between the transmission weight matrix of the second signal and the reception weight matrix of the first signal includes: the transmission weight matrix of the second signal is Hermite of the first signal reception weight matrix. Matrix.

For S102 and S103, for example, in the DPS scenario shown in FIG. 4, the first wireless network device (TRP1) and the second wireless network device (TRP2) both send data to the UE, and the CSI-issued by the TRP1. The RS resource ID is the same as the CSI-RS resource ID that has the QCL relationship with the second signal (such as the SRS) indicated by the first indication information received by the UE. Therefore, the UE determines the second according to the CSI-RS resource ID delivered by the TRP1. The spatial information of the signal, such as the direction of the transmit beam of the second signal, is directed to TRP1. The CSI-RS resource ID sent by the TRP2 is different from the CSI-RS resource ID indicated by the first indication information received by the UE and has a QCL relationship with the second signal (such as SRS). Therefore, the UE does not send the second to the TRP2. signal. It can be understood that, in some scenarios, if the spatial information of the second signal that the UE needs to send is multiple, for example, in a JT scenario, the UE may send data signals and/or control signals to multiple TRPs, then corresponding The spatial information of the first signal may also be multiple, for example, there may be more than one TRP using the same antenna port or resource identification of the first signal with the QCL relationship of the spatial information with respect to the second signal. Thereby the purpose of determining a plurality of spatial information of the second signal to be transmitted is achieved.

In addition, it can be understood that a reference signal, such as an SRS, is generally used for uplink channel sounding, and an antenna port and an uplink data channel (such as a physical uplink shared channel (PUSCH)) and/or an uplink control channel (such as The antenna ports of the physical uplink control channel (PUCCH) are the same.

The UE may further determine spatial information of the signal related to the second signal, such as an uplink control channel, an uplink data signal, and spatial information of at least one of the reference signals for uplink demodulation, according to the spatial information of the second signal.

Thus, the UE may determine spatial information of the second signal by first indication information indicating the QCL of the second signal and the first signal with respect to the spatial information, and the first signal received by the UE.

Optionally, in another possible embodiment, the foregoing S101 is optional.

Specifically, when the second signal and the QCL relationship of the first signal with respect to the spatial information, the first signal having a QCL relationship with the second signal is a fixed, non-configurable or dynamically changing signal followed between the TRP and the UE. In this case, S101 can be omitted. This QCL relationship can be predefined for the protocol.

In this way, the TRP is configured to indicate the spatial information of the second signal to be transmitted by the UE by issuing the first signal according to the predefined QCL relationship. When the UE receives the first signal, it learns the spatial information of the second signal to be sent according to the predefined QCL relationship. Thereby, the purpose of the UE determining the spatial information of the second signal to be transmitted is achieved.

The implementation shown in Figure 5c includes:

S201, the user equipment receives second indication information from the second wireless network device, where the second indication information is used to indicate that the first signal is used as a reference for spatial information of the second signal, and correspondingly, the second wireless network device Transmitting, by the user equipment, the second indication information;

S202. The user equipment receives the first signal from the first wireless network device. Correspondingly, the first wireless network device sends the first signal to the user equipment.

S203. The user equipment determines spatial information of the second signal to be sent according to the first signal, and sends the second signal to be sent by using spatial information of the second signal.

Optionally, the spatial information of the second signal includes an emission angle of the second signal, and an emission angle of the second signal may be determined according to an angle of arrival of the first signal.

Further, an operation manner for determining spatial information may be as follows: the UE adjusts the weight value of the physical and/or logical antenna, such as adjusting the phase of the analog phase shifter and/or adjusting the precoding matrix of the digital precoding to adjust the weight value. , thereby forming an array of weights. The UE may adjust the weights to form a reception weight matrix when receiving the signal. The purpose of the UE to form the receive matrix is to optimize signal reception performance, reduce interference, and the like. The UE may obtain the receiving spatial information of the first signal according to the energy distribution of the first signal in the air domain, thereby selecting the receiving matrix receiving signal that the UE considers to be the most suitable. For example, receiving the first signal according to the energy distribution of the first signal in the air domain. The spatial information may include a correlation matrix obtained from a spatial power spectrum of the signal by a mathematical transformation such as a Fourier transform. The weights adjusted when the signal is transmitted form a transmission weight matrix.

Further, when the first signal includes multiple signals, the UE determines spatial information of the second signal according to spatial information of the plurality of signals in the first signal. Specifically, the UE may process the multiple signals in the first signal to obtain spatial information of the second signal, such as the spatial or angular domain or beam domain information corresponding to the spatial information of each signal in the first signal. The spatial or angular domain or beam domain information as the second signal; or the spatial or angular domain or beam domain information corresponding to the spatial information of the partial signal in the first signal by the UE as the spatial or angular domain or beam of the second signal Domain information. Further, the UE may use the spatial information of the partial signal in the first signal as the useful signal spatial information, and the UE may use the spatial information of the partial signal in the first signal as the interference spatial information, and the UE may obtain the spatial information of the second signal. The spatial or angular domain or beam domain information corresponding to the partial signal of the first signal is used as the useful signal spatial information, and the spatial or angular domain or beam domain information corresponding to the partial signal is used as the interference spatial information. A useful signal can also be referred to as a channel.

Further, when the second signal includes multiple signals, the UE may use the same or similar spatial information for the multiple signals corresponding to the second signal.

For example, the first signal includes multiple signals, which may indicate that the first signal includes multiple CSI-RS resources, or a CSI-RS port; the second signal includes multiple signals, which may indicate that the first signal includes multiple SRS resources, or SRS port. Optionally, the UE may use the receiving direction of the first signal as a reference for the sending direction of the second signal.

For example, the UE may adjust the transmit antenna weight such that the transmit weight matrix of the second signal and the receive weight matrix of the first signal have a conjugate matrix relationship. Optionally, the conjugate matrix relationship between the transmission weight matrix of the second signal and the reception weight matrix of the first signal includes: the transmission weight matrix of the second signal is Hermite of the first signal reception weight matrix. Matrix.

The second wireless network device is the same as or different from the first wireless network device.

The implementation shown in Figure 5c differs from the implementation described in Figure 5b in that the first indication information in Figure 5b is related to the QCL hypothesis and the second indication information in Figure 5c is not directly related to the QCL hypothesis. In FIG. 5c, the first indication information is used as a reference for the spatial information of the second signal by using the second indication information, that is, by adding signaling in the downlink transmission, indicating the reference resource of the uplink transmission of the UE. The signaling (second indication information) may be physical layer or higher layer signaling, or may be a combination of high layer signaling and physical layer signaling (such as a high layer signaling notification configuration, physical layer signaling notification activation).

Specifically, the first signal may include a non-zero power reference signal, such as a reference signal (such as CSI-RS) for obtaining channel state information, a reference signal for demodulation (such as DMRS), and a reference for beam management. At least one of a signal (such as BMRS). The second signal is an uplink signal, and may be an uplink reference signal, such as at least one of a reference signal for demodulation or a reference signal for uplink channel sounding, or an uplink data signal or a control signal.

Optionally, the second indication information may be included in configuration information of the first signal.

Optionally, the configuration information of the first signal includes a CSI measurement setting field of the first signal, a process domain of the first signal, and resources of the first signal. a (resource) field, an antenna port information field of the first signal, and at least one of a beam information field in which the first signal is located. The beam information field in which the first signal is located may include a beam identifier (ID) where the first signal is located, and may further include a beam management RS resource, such as an RS ID and/or an antenna port of the RS.

Optionally, the second indication information includes a number of bits, the first signal corresponds to at least one of the several bits, and the at least one bit indicates the first signal is used as the second signal. Reference to spatial information. In this case, the second indication information may be included in a channel state information measurement setting field of the first signal or a process domain of the first signal.

Taking the first signal as a CSI-RS signal, and the second indication information is included in a CSI measurement setting (high-level signaling), as shown below, the second indication information may be represented as a reference NZP CSI-RS ID field. (referenceCsirsNZPId), this field is defined as a bit string. Each bit in the bitstream may sequentially indicate whether the NZP CSI-RS corresponding to one NZP CSI-RS ID is used as a reference for spatial information of the second signal in a predetermined order of the protocol. It can be understood that, in another optional manner, the domain includes a number of NZP CSI-RS ID values, and each ID value represents a resource as a reference for spatial information of the second signal. Since the TRP knows the beam to which the first signal, which is indicated as the second signal, belongs, the relationship between the first signal and the beam can be controlled such that the spatial information of the second signal is controllable.

Optionally, the second indication information is a domain having a Boolean value, or the second indication information is only present when referring to the spatial information of the first signal as the second signal. In this case, the second indication information is included in a resource domain of the first signal, an antenna port information field of the first signal, and at least one of a beam information field in which the first signal is located.

The first signal is a CSI-RS signal, and the second indication information is included in a resource domain (high-level signaling) of the NZP CSI-RS. As shown below, the second indication information may be represented as an uplink reference activation domain (referenceUplinkEnable). . The upstream reference activation domain is defined as a Boolean value. For example, when 1 is used, the resource of the NZP CSI-RS where the domain is located may be used as a reference for the spatial information of the second signal. When 0, the resource of the NZP CSI-RS where the domain is located may not be used as the space of the second signal. Reference to information. Alternatively, the definition of the uplink reference activation domain may be a domain that needs to be configured (existing). When the domain exists in the message format, the resource of the NZP CSI-RS where the domain is located is used as the spatial information of the second signal. Reference. When the domain does not exist in the message format, the resource indicating that the NZP CSI-RS of the domain is not used as the reference for the spatial information of the second signal, even if the UE previously uses the NZP CSI-RS resource of the domain as the first For reference to the spatial information of the two signals, it is also necessary to stop continuing to use the resources of the NZP CSI-RS in which the domain is located as a reference for the spatial information of the second signal. Optionally, the resource domain of the NZP CSI-RS may also include a domain that needs to be configured. When the domain exists in the message format, the resource of the NZP CSI-RS where the domain is located is not used as the space of the second signal. Reference to information. In this case, when the domain of the message indicating that the NZP CSI-RS resource of the domain is used as the reference for the spatial information of the second signal does not exist, the resource indicating that the NZP CSI-RS of the domain is located continues as the second. The reference to the spatial information of the signal exists until the domain in the message format indicating that the resource of the NZP CSI-RS in which the domain is located is not used as a reference for the spatial information of the second signal.

The second indication information may also be included in physical layer signaling, such as downlink control information (DCI). The DCI includes a channel state information setting setting (CSI measurement setting) field of the first signal, a process field of the first signal, a resource field of the first signal, the first signal The second indication information may also be included in at least one of the above domains in the DCI when the antenna port information field and at least one of the beam information fields in which the first signal is located. Alternatively, the second indication information may also be included in a separate domain, ie, not included in any of the above domains.

The first signal is beam number information (as included in the beam information domain, or in an independent domain), and the second indication information is included in the DCI as an example. The number of bits occupied by the second indication signaling in the DCI is related to the number of beams. For example, if the beam number information is 0-3, the 2 bit information in the DCI can be used to indicate which beam direction of the UE is the reference of the spatial information of the uplink signal to be sent by the UE. The first signal is a CSI-RS signal, and the reference of the spatial information of the second signal is a resource ID of the antenna port or the antenna port of the first signal (eg, included in a resource domain of the first signal, or an independent domain) The second indication information is included in the DCI as an example. The number of bits occupied by the second indication information in the DCI is related to the packet of the antenna port or the packet of the resource ID where the antenna port is located. For example, if the antenna port is 0-3, 0 and 1 are a group, and 2 and 3 are another group, 1 bit in the DCI can be used as the second indication information, and when the second indication information is 1, the antenna port 0 and The signal on 1 is used as a reference for the spatial information of the second signal. When 0, the signal on antenna ports 2 and 3 is used as a reference for the spatial information of the second signal. It can be understood that the specific indication manner of the second indication information may be differently defined according to the actual situation, and the examples herein are not limited.

Optionally, the second indication information may also be carried in a domain similar to the first indication information. Specifically, the second indication information may be carried in an SRS request field in the downlink control information.

In this way, by the explicit indication of the second indication information, the UE is made aware of the first signal as the reference of the spatial information of the second signal, and thus the spatial information of the second signal to be transmitted can be determined.

The embodiment of the present invention further provides an implicit indication, as shown in Figure 5d, including:

S301. The user equipment receives a first signal from the first wireless network device, and correspondingly, the first wireless network device sends the first signal to the user equipment.

Specifically, the first signal belongs to a signal referenced by spatial information of the second signal.

Optionally, the first signal has a characteristic of a signal referenced by spatial information of the second signal.

S302. The user equipment determines spatial information of the second signal to be sent according to the first signal, and sends the second signal to be sent by using the spatial information.

Specifically, the user equipment determines that the first signal belongs to a signal referenced by spatial information of the second signal, and the user equipment determines, according to the first signal, spatial information of the second signal to be sent.

Further, an operation mode for determining spatial information may be as follows: the UE adjusts the weight value of the physical and/or logical antenna, such as adjusting the phase of the analog phase shifter and/or adjusting the precoding matrix of the digital precoding to adjust the weight value. , thereby forming an array of weights. The UE may adjust the weights to form a reception weight matrix when receiving the signal. The purpose of the UE to form the receive matrix is to optimize signal reception performance, reduce interference, and the like. The UE may obtain the receiving spatial information of the first signal according to the energy distribution of the first signal in the air domain, thereby selecting the receiving matrix receiving signal that the UE considers to be the most suitable. For example, receiving the first signal according to the energy distribution of the first signal in the air domain. The spatial information may include a correlation matrix obtained from a spatial power spectrum of the signal by a mathematical transformation such as a Fourier transform. The weights adjusted when the signal is transmitted form a transmission weight matrix.

Further, when the first signal includes multiple signals, the UE determines spatial information of the second signal according to spatial information of the plurality of signals in the first signal. Specifically, the UE may process the multiple signals in the first signal to obtain spatial information of the second signal, such as the spatial or angular domain or beam domain information corresponding to the spatial information of each signal in the first signal. The spatial or angular domain or beam domain information as the second signal; or the spatial or angular domain or beam domain information corresponding to the spatial information of the partial signal in the first signal by the UE as the spatial or angular domain or beam of the second signal Domain information. Further, the UE may use the spatial information of the partial signal in the first signal as the useful signal spatial information, and the UE may use the spatial information of the partial signal in the first signal as the interference spatial information, and the UE may obtain the spatial information of the second signal. The spatial or angular domain or beam domain information corresponding to the partial signal of the first signal is used as the useful signal spatial information, and the spatial or angular domain or beam domain information corresponding to the partial signal is used as the interference spatial information. A useful signal can also be referred to as a channel.

Further, when the second signal includes multiple signals, the UE may use the same or similar spatial information for the multiple signals corresponding to the second signal.

For example, the first signal includes multiple signals, which may indicate that the first signal includes multiple CSI-RS resources, or a CSI-RS port; the second signal includes multiple signals, which may indicate that the first signal includes multiple SRS resources, or SRS port.

Optionally, the UE may use the receiving direction of the first signal as a reference for the sending direction of the second signal.

For example, the UE may adjust the transmit antenna weight such that the transmit weight matrix of the second signal and the receive weight matrix of the first signal have a conjugate matrix relationship. Optionally, the conjugate matrix relationship between the transmission weight matrix of the second signal and the reception weight matrix of the first signal includes: the transmission weight matrix of the second signal is Hermite of the first signal reception weight matrix. Matrix.

Optionally, the user equipment determines that the signal that the first signal belongs to the spatial information of the second signal includes: the user equipment determines that the first signal has a signal referenced by spatial information of the second signal Characteristics.

Optionally, the feature of the signal referenced by the spatial information of the second signal includes resource information of the signal, where the resource information includes antenna port information, resource identifier information, channel state information measurement setting identifier information, and process identifier information. At least one of the signals includes at least one of a downlink control signal, a non-zero power reference signal, and a signal for beam management.

Optionally, the spatial information of the second signal includes an emission angle of the second signal, and an emission angle of the second signal may be determined according to an angle of arrival of the first signal.

In this case, the reference (the set containing the reference) used to indicate the spatial information of the second signal is predefined by the protocol and is known by both the TRP and the user equipment.

Optionally, the reference (the set containing the reference) used to indicate the spatial information of the second signal cannot be configured.

In a possible manner, the protocol provides that the UE transmits an uplink signal with reference to resources of a channel for transmitting downlink control information, which may be referred to as a downlink control channel, such as a physical downlink control channel (PDCCH). That is, the first signal is a downlink control channel, and the resources of the downlink control channel include at least one of an antenna port of a reference signal in the downlink control channel, an analog beam where the downlink control channel is located, and the like.

Generally, the serving cell is sent by the downlink control channel, and the UE needs the uplink feedback as the serving cell. Therefore, the reference beam of the reference downlink control channel can be used as a reference for the spatial information of the uplink signal (the second signal).

Taking the DPS shown in FIG. 4 as an example, in a cooperative scenario, there are a serving cell and a coordinated cell, and the protocol specifies that the UE should use the following control direction of the control channel to determine the direction of uplink transmission.

In some scenarios, such as a DPS scenario, gNB and TRP can coexist. The TRP can be a radio unit (RU).

When the base station requests the UE to send an uplink signal to the serving cell, the base station only sends the downlink control channel on the serving cell; if the UE is required to send the uplink signal to the serving cell and other coordinated cells, the base station that needs to receive the uplink signal of the UE, The downlink control channel should be sent, and the manner in which the plurality of cells send the downlink control channel can be sent in the form of SFN (single frequency network), or sent in time division.

In another possible manner, for example, the protocol stipulates that the UE should use a certain downlink antenna port as a reference for uplink transmission. For example, referring to the CSI-RS port, the protocol specifies the port number that the UE should refer to.

In this way, the UE can determine the starting angle of the uplink transmission with the angle of arrival of the received antenna port. Such a definition can be coordinated by the TRP on the resource scheduling. That is, only the TRP that needs to receive the uplink signal of the UE can configure the foregoing antenna port as the starting angle reference of the uplink transmission.

For example, the protocol stipulates that the antenna port 0 of the UE is the reference of the departure angle of the uplink transmission.

When the base station is configured, if multiple base stations cooperate, the base station that needs to receive the uplink signal of the UE needs to configure the antenna port 0. Otherwise, the configuration of the antenna port 0 should be avoided.

For example, TRP1 and TRP2, the base station requires the UE to send an uplink signal to the TRP1. When the TRP1 is in beam alignment, the configuration includes at least the antenna port 0 to form a downlink beam. After the downlink transmission direction and the reception direction scan are completed, the TRP1 and the UE are saved. Information containing the beam pair of antenna port 0.

While TRP1 sends the first signal, it uses antenna port 0 to send, while TRP1 does not use antenna port 0 when transmitting the first signal.

In this way, since only TRP1 uses the antenna port to transmit the first signal, and the protocol specifies that the UE uses antenna port 0 as a reference, this restricts the UE from using the downlink arrival direction of the beam pair including the antenna port 0 established only with TRP1 to determine the uplink. The direction of the send.

Optionally, when the beam is aligned, the TRP2 may not allocate the antenna port 0 in the formed beam. For example, the TRP2 configures the antenna port 1 to form a downlink beam scan.

In this way, since only the downlink port pair established by the TRP1 and the UE has the antenna port 0, and the protocol specifies that the UE uses the antenna port 0 as a reference, the UE can be restricted to use the downlink of the beam pair including the antenna port 0 established only by the TRP1. The direction of arrival is used to determine the direction of the uplink transmission.

In another possible way, it is applied to beam management, where there is a beam ID. The beam ID corresponds to a group of downlink TRP transmissions and UE reception beam resources. The protocol stipulates that the uplink transmission of the UE should refer to the beam ID resource agreed by the protocol. For example, refer to the uplink transmission of the downlink beam according to the beam ID X.

The advantage of this mode is that the base station can configure different beam pairs on different time resources. For the beam ID saved by the UE, the UE can use the aligned beam ID X for uplink transmission in the random access phase, which can be fully utilized. The result of the scan.

Optionally, the base station may further configure, in the process of performing downlink beam alignment, only the TRP for receiving the second signal of the UE performs downlink beam alignment in the beam scanning phase by using the resource with the beam ID X. In this way, the UE can be restricted from using the downlink arrival direction of the beam pair established with the TRP for receiving the second signal of the UE to determine the direction of uplink transmission.

For example, the protocol stipulates that the UE uses the beam ID of 0 as a reference for uplink transmission.

When the base station is configured, if multiple base stations cooperate, the base station that needs to receive the uplink signal of the UE needs to configure the beam ID to be 0. Otherwise, the configuration with the beam ID of 0 should be avoided.

This method is suitable for the case where there is a beam ID parameter. The beam ID can be sent at the upper layer or physical layer signaling.

For example, TRP1 and TRP2, the base station requires the UE to send an uplink signal to TRP1 without transmitting an uplink signal to TRP2.

Then, in the beam training phase, TRP1 configures beam ID=0, and this beam corresponds to at least one antenna port, and forms a beam direction through analog/digital/mixed beamforming. The beam pair with beam ID=0 is aligned by adjusting the transmission direction of the downlink base station beam and adjusting the receiving direction of the UE.

TRP2 does not establish a downlink beam pair relationship with the UE with beam ID=0.

In this way, the UE transmits the uplink signal to the TRP1 through the beam pair established with the TRP1 and the uplink signal only with the beam ID=0 as a reference.

In another possible manner, the protocol stipulates that the UE should determine the spatial information of the uplink transmission by referring to the CSI-RS antenna port in the CSI-RS resource ID specified by the protocol.

The advantage of this approach is that if the beam scans multiple beams, it is configured in different CSI-RS resources, so that the CSI-RS resources can be used to distinguish the beams.

For example, the protocol stipulates that the UE uses the NZP CSI-RS resource ID=0 as the spatial information reference for uplink transmission.

When the base station is configured, if multiple base stations cooperate, the base station that needs to receive the uplink signal of the UE needs to configure the NZP CSI-RS ID=0. Otherwise, the configuration of the NZP CSI-RS ID=0 should be avoided.

This method is applicable to the case where the base station manages one beam direction with one NZP CSI-RS resource.

Both TRP1 and TRP2 can establish an alignment relationship of the downlink beam pair with the UE. If the base station wants the UE to send the uplink signal only to the TRP1, the TRP1 configures the NZP CSI-RS resource for the UE, the ID of which is 0, and the resource corresponds to at least one antenna port; and when the TRP2 is beam-aligned with the UE, the beam configured by the TRP2 The ID of the NZP CSI-RS resource is different from that of TRP1.

At least one of the port numbers and time-frequency resource locations of the antenna ports in the two NZP CSI-RS resources configured by TRP1 and TRP2 is different to distinguish the two. The corresponding antenna port number, time-frequency resource location, and the like in each NZP CSI-RS can be delivered through high-layer signaling.

In this way, the UE transmits the uplink signal to the TRP1 by using the beam pair established with the TRP1 and the NDP CSI-RS resource ID=0 as the reference for transmitting the uplink signal.

It can be understood that the reference of the spatial information of the uplink transmission herein may also refer to the reference of the uplink analog beam and/or digital beamforming of the UE, and finally may be embodied as a reference of the uplink transmission angle. The signal (second signal) for performing uplink transmission includes at least one of an uplink control signal, an uplink data signal, and a reference signal. The uplink control signals are, for example, a physical uplink control channel PUCCH, an uplink data signal such as a physical uplink data channel PUSCH, and reference signals such as SRS and DMRS.

It can be understood that, when the protocol adopts a pre-defined manner, the base station and the UE have the same understanding of the definition, and the UE can only use the downlink resource as the direction reference for the uplink transmission; the downlink resource can only be used by TRP used for uplink reception.

The predefined manners of the various protocols given above may be either defined or combined. In the case of a combination definition, it is necessary to make the base station and the UE understand the definition consistently at the time of configuration.

The method for determining the spatial information of the uplink signal by the UE may be implemented by using at least one of the foregoing 5b, 5c, and 5d, and the beam scanning and measurement process of obtaining the uplink beam pair may be simplified or omitted.

Further, the UE can learn the airspace relationship between the first signal and the second signal by using at least one of 5b, 5c, and 5d. Among them, the airspace relationship includes the spatial parameters mentioned in other parts of the application, such as the emission angle (AOA), the main emission angle (Dominant AoA), the average arrival angle (Average AoA), the angle of arrival (AOD), the channel correlation matrix, and the angle of arrival. Power angle spread spectrum, Average AoD, power angle spread spectrum of the departure angle, transmit channel correlation, receive channel correlation, transmit beamforming, receive beamforming, spatial channel correlation, spatial filter, space One or more of filtering parameters, or spatial receiving parameters, and the like. Since the path loss and/or the timing advance are also related to the airspace relationship, the UE may measure the downlink path loss measurement by using the received power of the first signal on the premise that the UE determines the first signal having the spatial relationship with the second signal to determine The uplink transmission power of the second signal, or using the reception time of the first signal, adjusts the timing advance to determine the transmission time of the second signal. The UE may receive the first signal, determine the relationship between the second signal and the first signal, and the UE may perform one or more of the following: determining the corresponding transmission space information of the second signal according to the received spatial information of the first signal. And determining a transmission power of the second signal according to the received power of the first signal, and determining a transmission time of the second signal according to the reception time of the first signal.

Specifically, the UE obtains the receiving space information of the downlink signal according to at least one of the methods 5b, 5c, and 5d, and is used to determine the sending spatial information of the uplink signal, so that the UE obtains the downlink signal and the uplink signal. Correspondence between the two. In principle, such a correspondence is to indicate that the UE is transmitting in the appropriate spatial direction in order to facilitate reception by the base station. Uplink signals in different directions sent by the UE experience different path loss and propagation delay in the propagation process. As shown in FIG. 4, TRP1 and TRP2 are two transmission points, which may be transmission points at geographically different locations. Since the distance between the UE and the two transmission points is not equal, the path loss and propagation delay experienced by the uplink signal sent by the UE are also different. In at least one of 5b, 5c, 5d, the UE determines spatial information of the second signal according to the first signal, the principle is that the path of the first signal in spatial propagation is highly correlated with the path of the second signal. Therefore, the path loss and propagation delay experienced by the first signal during propagation can also be considered to be highly correlated with the path loss and propagation delay experienced by the second signal during propagation. Therefore, the correspondence between the first signal and the second signal may also be used by the UE to determine a path loss and a propagation delay of the second signal.

Optionally, the first signal includes a non-zero power reference signal.

Optionally, the non-zero power reference signal included in the first signal is a non-zero power reference signal for obtaining channel state information, a non-zero power reference signal for demodulation, and a non-zero power At least one of a beam-managed reference signal, a synchronization signal, and a tracking reference signal Tracking RS for time and frequency synchronization tracking. For example, in the LTE system, the reference signal used to obtain channel state information may be a channel state information-reference signal (CSI-RS), and the reference signal used for demodulation may be a demodulation reference signal. (demodulation reference signal, DMRS). In the NR system, the reference signal used to obtain channel state information may be a CSI-RS, or may be another reference signal having a function of obtaining channel state information, and the reference signal used for demodulation may be a DMRS, or may be used for other purposes. For the reference signal of the demodulation function, the reference signal for beam management may be a beam management reference signal (BMRS), and the reference signal for beam management may be used for measurement of large-scale characteristics of the beam, and further Used for beam scanning, alignment and correction, such as by measuring the gain in large-scale characteristics, using the beam pair with the largest gain as a pair of beam pairs.

Optionally, the second signal includes a reference signal. The reference signal can be a non-zero power reference signal or a zero power reference signal.

Optionally, the reference signal included in the second signal is at least one of a reference signal used for demodulation and a reference signal used for uplink channel measurement. For example, in the LTE system, the reference signal used for demodulation may be a DMRS, and the reference signal used for uplink channel measurement may be a sounding reference signal (SRS). In the NR system, the reference signal used for demodulation may be a DMRS, or may be other reference signals for demodulation functions; the reference signal used for uplink channel measurement may be SRS, or other uplink channel measurement functions may be used. Reference signal.

In a possible implementation manner of the present application, the UE may determine, according to the received power of the first signal, a transmit power of an uplink signal (including a second signal and/or a second signal related signal), and use the transmit power. To send an upstream signal.

The second signal related signal may include a signal that the intersection of the antenna port (also referred to as a port, port) of the signal and the antenna port of the second signal is non-empty, and the signal may be an uplink data signal, and/or , an uplink control signal, and/or a reference signal different from the second signal.

Optionally, the second signal related signal may indicate the relationship with the second signal by means of an explicit indication. If the base station sends signaling to the UE, indicating that the signal is a signal related to the second signal.

Specifically, the application provides a communication method, which may include:

S801. The base station sends, to the UE, information for indicating a transmit power of the first signal.

Correspondingly, the UE receives information indicating a transmit power of the first signal;

Optionally, the notification manner may be that the base station sends signaling to the UE by using a cell in the RRC, where the signaling indicates a sending power of the first signal;

Optionally, the transmit power is a transmit power of the base station side.

S802. The UE receives the first signal, and measures and obtains the received power of the first signal.

Optionally, the UE may perform filtering and smoothing the received power of the first signal within a certain time window to obtain the filtered received power as the received power of the first signal.

When the first signal is a reference signal CSI-RS for obtaining channel state information, the received power may also be referred to as a CSI-RS reference signal received power (RSRP);

S803. The UE obtains a path loss of the first signal according to the base station notifying the transmit power of the first signal and the received power of the first signal.

Optionally, the received power of the first signal may be a reference signal received power.

Optionally, the path loss is equal to a difference obtained by subtracting the received power of the filtered reference signal from the transmit power;

S804. The UE determines an uplink transmit power according to the path loss or an open loop control parameter related to the path loss, and sends an uplink signal by using the uplink transmit power. Wherein, sending the uplink signal by using the uplink transmit power may be optional.

Wherein the uplink signal comprises a signal related to the second signal and/or the second signal. Optionally, the UE obtains a correspondence between the first signal and the signal related to the second signal and/or the second signal. The correspondence may be obtained by at least one of steps 5c, 5d, 5b of the embodiment.

The signal related to the second signal may include a signal that the intersection of the antenna port (also referred to as a port, port) of the signal and the antenna port of the second signal is non-empty, and the signal may be an uplink data signal, and/or uplink A control signal, and/or a reference signal that is different from the second signal. For example, the second signal is SRS, the SRS has only one port, such as port 12, and the PUSCH has 4 ports, such as port 9-12. Since the 1 port of the SRS is one of the 4 ports of the PUSCH, Thus the PUSCH can be considered to be the signal associated with the second signal. For another example, the second signal is SRS, the SRS has 2 ports, such as ports 10 and 12, and the PUSCH has 4 ports, such as ports 7, 9, 11 and 12, since the SRS and PUSCH antenna ports have intersections, ports 12, and thus the PUSCH can be considered as the second signal related signal.

The second signal related signal and the second signal are typically signals transmitted using the same or similar spatial information.

Optionally, the second signal related signal may indicate the relationship with the second signal by means of an explicit indication. If the base station sends signaling to the UE, indicating that the signal is a signal related to the second signal.

Generally, the UE may obtain uplink transmit power according to one or more of an open loop control parameter, a closed loop control parameter, a base station desired nominal power density, a signal bandwidth, and a maximum power limit. Wherein, the open loop control parameter may include the foregoing path loss.

In this way, the UE compensates the path loss to the transmit power, so that the uplink signal (such as the second signal) can satisfy the demodulation requirement of the base station when the path loss occurs after the path loss occurs in the propagation process.

Optionally, the path loss compensation may be embodied as a product of a path loss and a coefficient (also referred to as a compensation coefficient, a path loss compensation coefficient, a factor, a compensation factor, or a path loss compensation factor). The coefficients may be non-negative, assigned to the UE by the base station, and the configuration may be cell-specific or UE-specific. When the coefficient is configured to be 1, the UE compensates the path loss measured by the first signal to the transmit power of the second signal; when the coefficient is configured to be 0, the UE does not compensate for the path loss; when the coefficient configuration is less than 1 The UE compensates the path loss measured by the first signal to the transmission power of the second signal. At this time, the base station configures a compensation coefficient smaller than 1, so that the reception of the second signal can reduce the interference to other users. When the coefficient is configured to be greater than 1, the UE compensates for the path loss measured by the first signal to the transmit power of the second signal. The base station is configured with a compensation coefficient greater than 1, which can compensate for the asymmetry of the base station side beamforming and the UE side beamforming. Specifically, the beamforming signals transmitted and received by the base station are more concentrated in the pattern, and the main lobe is narrower, and the UE has a smaller antenna configuration than the base station, and the received and transmitted beamforming signals are more dispersed in the direction map. The wider the valve, which results in the concentration of the downlink signal in the spatial energy distribution, the UE can receive the narrow beam with a wide beam, and can obtain the downlink signal better, and the uplink base station receives the wide beam transmitted by the UE with the narrow beam, and there will be a part. The energy loss, therefore, the base station configures the UE with a compensation coefficient greater than 1, which can cause the UE to compensate for the loss due to the above reasons.

In summary, the UE can measure the received power of the first signal, obtain the path loss (PL) of the first signal, and compensate the path loss of the first signal as the path loss of the second signal. The UE compensates for the transmission power of the second signal by alpha*PL, where alpha is the path loss compensation factor. After performing path loss compensation, the UE sends the second signal to the base station to meet the maximum transmit power limit. The path loss supplement factor may be specified by the protocol, or locally pre-configured or pre-stored, or may be configured for the base station.

In another possible implementation manner of the present application, the UE may determine and/or adjust a transmission time of the uplink signal according to the receiving time of the first signal.

The uplink signal includes the second signal and/or the second signal related signal.

The description of the first signal, the second signal, the second signal related signal, and the uplink signal can be referred to the description in the foregoing method.

Specifically, the application provides a communication method, which may include:

S901. The base station sends at least two first signals to the UE.

Correspondingly, the UE receives the first signal from the base station;

Optionally, the at least two first signals have the same configuration information, and the configuration information may be used to indicate at least one of an antenna port, a time-frequency resource location, and a resource identifier used by the downlink signal.

S902. The UE determines, according to the at least two first signals, a change value of a propagation delay of the first signal.

Optionally, the change value of the propagation delay of the first signal may be a function of the reception time of the at least two first signals, such as a difference between the reception times of the two first signals in the at least two first signals, Or the average of multiple differences.

In the present application, the receiving time refers to the time of the received signal determined by the UE, which may be deviated from the time when the signal actually arrives, for example, the time that has been quantized, and the receiving time may also be referred to as the receiving timing.

S903. The UE determines and/or adjusts a sending time of the uplink signal according to a change value of a propagation delay of the first signal.

Optionally, the UE may adjust the timing advance (TA) of the uplink transmission according to a change value (also referred to as a change, an offset) of the propagation delay of the first signal. Since the transmission time of the uplink signal is related to the timing advance amount, the UE is equivalent to adjusting the transmission time of the uplink signal.

Optionally, the adjusted TA=TA+offset before adjustment. Among them, offset can be positive or negative.

S904. The UE sends the uplink signal according to a sending time of the uplink signal.

Generally, the sending time of the uplink signal may be determined by the base station: the signal transmitted by the UE through the UE, such as the preamble preamble, the uplink channel sounding signal SRS, the uplink dedicated signal DMRS, etc., may determine that the signal sent by the UE is The propagation delay experienced in the propagation process; the base station can determine the time adjustment of the uplink signal sent by the UE by measuring the propagation delay of the signal, and the time adjustment can be represented by the uplink timing advance, and the base station uses the timing advance indication to make the signal sent by the UE. After the propagation delay is experienced in the propagation process, the base station can be reached at the time expected by the base station to reduce interference to other UEs in the cell. Specifically, the base station can adjust the time when the UE sends the uplink signal, so that the time-frequency domain and the airspace between the UEs are orthogonal. For multiple UEs that are orthogonal in the time-frequency domain, if the time that the signal sent by the UE arrives at the base station overlaps with other UEs in the multiple UEs, the UEs that should be orthogonal at the same time overlap. Interference. Therefore, the uplink signal sent by the UE is consistent with the expected arrival delay requirement of the base station.

In the case that the base station notifies the UE of the timing advance by the medium access control (MAC) layer cell, a certain time is required between the transmission of the two MAC layer cells, and the timing advance delivered by the base station is not received. When the notification is received, the UE may adjust and update the timing advance amount according to the reception time of the downlink signal (the first signal). Specifically, the UE may measure the time difference of the receiving timing of the two first signals, obtain the difference of the downlink signal receiving timing, derive the change of the propagation delay experienced by the downlink signal, and adjust the timing of the uplink sending by using the change of the propagation delay. Advance quantity.

In S904, the UE may send the second signal of the time domain unit corresponding to the sending time according to the sending time of the uplink signal, where the time domain unit may be a subframe, a slot, and a symbol (such as OFDM). Symbol) or one or more of minislots.

Optionally, after adjusting the uplink transmission timing advance amount, the UE may update the uplink transmission timing advance amount that is maintained or stored.

Further, optionally, the UE may report an uplink transmission timing advance amount, such as an adjusted uplink transmission timing advance amount. Alternatively, the UE may report information related to an uplink transmission timing advance amount, where the information is a value corresponding to a function of an uplink transmission timing advance amount. When the UE is to maintain multiple uplink timing advances, the UE may report multiple uplink timing advances, or multiple information related to the uplink transmit timing advance, or information related to multiple uplink transmit timing advances. . Specifically, the UE may report a difference, or a function of a difference, of at least two of the plurality of uplink timing advances. The function of the difference may refer to a phase offset of the frequency domain corresponding to the difference of the time domain, which may be a function having an FFT/IFFT relationship. The UE may report, to the at least one of the first network device and the second network device, an uplink transmission timing advance amount of the uplink signal corresponding to the at least one of the first network device and the second network device, or send the uplink uplink timing Timing advance related information. The uplink transmission timing advance amount reported by the UE, or the information related to the uplink transmission timing advance amount has a corresponding relationship with the first signal corresponding to the first network device, and/or the first signal corresponding to the second network device.

For example, in the first time domain unit slot1, the second time domain unit slot2, the UE receives the first signals of slot1 and slot2. Where slot 1 is an example of a first time domain unit and slot 2 is an example of a second time domain unit. When receiving the downlink signal, the UE may perform synchronization timing according to the location of the physical signal, such as the pilot, and know the arrival timing t1 of the first signal of slot1 and the arrival timing t2 of slot2. The UE can obtain the change of the downlink signal propagation delay according to the time difference between t1 and t2. For example, the time domain unit slot length can be t0, such as t0=0.5ms. The length of N slots experienced from slot 1 to slot 2, where N is the number of time domain unit cells between two slots 1 and slot 2. Then, according to the calculation result of t2-t1-N*t0, the UE can obtain the change of the downlink propagation delay of the first signal from slot1 to slot2. Usually, the base station sends a Timing Advance Command to inform the UE that the uplink signal needs to be advanced. The UE should record and maintain the corresponding timing advance TA. When the UE has not received the Timing Advance Command, the UE may adjust the currently maintained TA according to the change of the first signal propagation delay. The adjusted TA is the pre-adjusted TA plus the change value of the first signal propagation delay. The UE adjusts the TA and transmits a second signal according to the adjusted TA.

According to the foregoing method, as shown in FIG. 6, an embodiment of the present invention further provides an apparatus for signal transmission, which may be a wireless device 10. The wireless device 10 can correspond to the first wireless network device or the second wireless network device in the above method. The first wireless network device may be a base station (such as a TRP) or other devices, which is not limited herein. The second wireless network device may be a base station (such as a TRP) or other devices, which is not limited herein.

The apparatus can include a processor 110, a memory 120, a bus system 130, a receiver 140, and a transmitter 150. The processor 110, the memory 120, the receiver 140 and the transmitter 150 are connected by a bus system 130 for storing instructions for executing instructions stored in the memory 120 to control the receiver 140 to receive. The signal, and controlling the transmitter 150 to transmit a signal, completes the steps of the first wireless network device (such as a base station) or the second wireless network device in the above method. The receiver 140 and the transmitter 150 may be the same or different physical entities. When they are the same physical entity, they can be collectively referred to as transceivers. The memory 220 may be integrated in the processor 210 or may be provided separately from the processor 210.

As an implementation, the functions of the receiver 140 and the transmitter 150 can be implemented by a dedicated chip through a transceiver circuit or a transceiver. The processor 110 can be implemented by a dedicated processing chip, a processing circuit, a processor, or a general purpose chip.

As another implementation manner, a wireless device provided by an embodiment of the present invention may be implemented by using a general-purpose computer. The program code that is to implement the functions of the processor 110, the receiver 140 and the transmitter 150 is stored in a memory, and the general purpose processor implements the functions of the processor 110, the receiver 140 and the transmitter 150 by executing the code in the memory.

For the concepts, explanations, detailed descriptions and other steps related to the technical solutions provided by the embodiments of the present invention, refer to the descriptions of the foregoing methods or other embodiments, and no further details are provided herein.

According to the foregoing method, as shown in FIG. 7, the embodiment of the present invention further provides another apparatus for signal transmission, and the apparatus may be a wireless device 20, and the wireless device 20 corresponds to the user equipment in the foregoing method.

The apparatus can include a processor 210, a memory 220, a bus system 230, a receiver 240, and a transmitter 250. The processor 210, the memory 220, the receiver 240 and the transmitter 250 are connected by a bus system 230 for storing instructions for executing instructions stored in the memory 220 to control the receiver 240 to receive. The signal, and the transmitter 250 is controlled to send a signal to complete the steps of the user equipment in the above method. The receiver 240 and the transmitter 250 may be the same or different physical entities. When they are the same physical entity, they can be collectively referred to as transceivers. The memory 220 may be integrated in the processor 210 or may be provided separately from the processor 210.

As an implementation, the functions of the receiver 240 and the transmitter 250 can be implemented by a dedicated chip through a transceiver circuit or a transceiver. The processor 210 can be implemented by a dedicated processing chip, a processing circuit, a processor, or a general purpose chip.

As another implementation manner, a wireless device provided by an embodiment of the present invention may be implemented by using a general-purpose computer. The program code that is to implement the functions of the processor 210, the receiver 240 and the transmitter 250 is stored in a memory, and the general purpose processor implements the functions of the processor 210, the receiver 240, and the transmitter 250 by executing code in the memory.

For the concepts, explanations, detailed descriptions and other steps related to the technical solutions provided by the embodiments of the present invention, refer to the descriptions of the foregoing methods or other embodiments, which are not described herein.

According to the method provided by the embodiment of the present invention, the embodiment of the present invention further provides a communication system, including the foregoing first wireless network device and second wireless network device, and may further include one or more than one of the foregoing user devices.

It should be understood that, in the embodiment of the present invention, the processor 110 or 210 may be a central processing unit ("CPU"), and the processor may also be other general-purpose processors, digital signal processors (DSPs). , an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, and the like. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

The memory 120 or 220 can include read only memory and random access memory and provides instructions and data to the processor 310. A portion of the memory may also include a non-volatile random access memory. For example, the memory can also store information of the device type.

The bus system 130 or 230 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for the sake of clarity, the various buses are labeled as bus systems in the figure.

In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 110 or 210 or an instruction in the form of software. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.

It is also to be understood that the first, second, third, fourth,

It should be understood that the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

It should be understood that, in various embodiments of the present application, the size of the serial numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention. The implementation process constitutes any limitation.

Those of ordinary skill in the art will appreciate that the various unit and algorithm steps described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functionality for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. Should be covered in this

Within the scope of protection of the application. Therefore, the scope of protection of the present application should be determined by the scope of the claims.

Claims (26)

A signal transmission method, comprising: Receiving a first signal from the first wireless network device; Determining spatial information of the second signal to be transmitted according to the first signal and transmitting the second signal to be transmitted with the spatial information. The method according to claim 1, further comprising: receiving first indication information from the second wireless network device, the first indication information being used to indicate that the second signal and the first signal have a space A quasi-co-location relationship of information, the second wireless network device being the same as or different from the first wireless network device. A signal transmission method, comprising: Sending a first signal to the terminal device; Receiving a second signal from the terminal device, wherein the first signal is a reference to spatial information of the second signal. The method of claim 3, further comprising: Transmitting the first indication information to the terminal device, where the first indication information is used to indicate that the second signal and the first signal have a quasi-co-location relationship with respect to spatial information. The method according to claim 2, wherein the second wireless network device is a serving wireless network device of the terminal device, the first wireless network device is the serving wireless network device, or The wireless network device outside the service wireless network device. The method according to any one of claims 2, 4 or 5, wherein the first indication information is used to indicate that the second signal and the first signal have a quasi-co-location relationship with respect to spatial information, including: The first indication information is used to indicate that the resource information of the second signal and the resource information of the first signal have a quasi-co-location relationship with respect to the spatial information, where the resource information includes resource identification information, antenna port information, and channel state information measurement settings. At least one of identification information and process identification information. The method of any of claims 2, wherein the first signal comprises a non-zero power reference signal and/or the second signal comprises a reference signal, wherein The non-zero power reference signal included in the first signal is a non-zero power reference signal for obtaining channel state information, a non-zero power reference signal for demodulation, and a non-zero power for the beam At least one of the managed reference signals; the reference signal included in the second signal is at least one of a reference signal for demodulation and a reference signal for uplink channel measurement. The method according to any one of claims 2 to 4, wherein the first indication information is included in a domain for indicating quasi co-location information; or The first indication information is included in the downlink control information, and the downlink control information further includes information used to indicate uplink scheduling; or The first indication information is included in an information field for indicating uplink scheduling related. The method according to claim 1 or 7, further comprising: Receiving second indication information from the second wireless network device, the second indication information is used to indicate that the first signal is a reference for spatial information of the second signal, the second wireless network device and the first wireless Network devices are the same or different. The method according to claim 3 or 7, further comprising: Sending, to the terminal device, second indication information, where the second indication information is used to indicate that the first signal is used as a reference for spatial information of the second signal. The method according to claim 9 or 10, wherein the second indication information is included in configuration information of the first signal. The method according to claim 11, wherein the configuration information of the first signal comprises a channel state information measurement setting field of the first signal, a process domain of the first signal, and the first signal a resource domain, an antenna port information field of the first signal, and at least one of a beam information field in which the first signal is located. The method according to any one of claims 9 to 12, wherein the second indication information comprises a number of bits, the first signal corresponding to at least one of the plurality of bits, the at least One bit indicates the first signal as a reference for spatial information of the second signal. The method according to claim 13, wherein the second indication information is included in a channel state information measurement setting field of the first signal or a process domain of the first signal. The method according to any one of claims 9 to 12, wherein the second indication information is a domain having a Boolean value, or the second indication information is only used to indicate the first The signal exists only as a reference to the spatial information of the second signal. The method according to claim 15, wherein the second indication information comprises a resource domain of the first signal, an antenna port information field of the first signal, and a beam of the first signal At least one of the information fields. The method according to claim 1 or 7, wherein determining the spatial information of the second signal to be transmitted according to the first signal comprises: Determining that the first signal belongs to a signal referenced by spatial information of the second signal, Determining spatial information of the second signal to be transmitted according to the first signal. The method according to claim 17, wherein the determining the signal that the first signal belongs to the spatial information of the second signal comprises: The terminal device determines that the first signal has a characteristic of a signal referenced by spatial information of the second signal. The method according to claim 3 or 7, wherein the reference of the first signal to the spatial information of the second signal comprises: The first signal has a characteristic of a signal referenced by spatial information of the second signal. The method according to claim 18 or 19, wherein the characteristics of the signal referenced by the spatial information of the second signal comprise resource information of the signal, the resource information comprising antenna port information, resource identification information, channel status At least one of information measurement setting identification information, and process identification information, the signal comprising at least one of a downlink control signal, a non-zero power reference signal, and a signal for beam management. The method according to any one of claims 1 to 20, wherein the spatial information of the second signal comprises an emission angle of the second signal, and an emission angle of the second signal is according to the first The angle of arrival of the signal is determined. The method of any of claims 1-2, 5-9, 11-18 or 20-21, further comprising: Determining, according to the received power of the first signal, a transmit power of an uplink signal to be sent; Transmitting the uplink signal based on the transmit power, the uplink signal including the second signal and/or a signal related to the second signal; and/or, Adjusting an uplink transmission timing advance amount according to a change value of a reception time of the first signal; And transmitting an uplink signal according to the adjusted uplink transmission timing advance amount, where the uplink signal includes the second signal and/or a signal related to the second signal. An apparatus for signal transmission, comprising: a processor, a memory, and a transceiver unit, The memory is configured to store an instruction, the processor is configured to execute the memory stored instruction to control a transceiver unit to perform signal reception and transmission, and when the processor executes the memory stored instruction, as in claim 1-22 The method described in any of the above is completed. The apparatus according to claim 23, wherein said transceiver unit is a transceiver or an input/output interface. A communication device for performing the method of any of claims 1-22. A computer readable storage medium comprising a computer program, when executed on a computer, causes the method of any of claims 1-22 to be performed.

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