WO2022151085A1

WO2022151085A1 - Beam management method, terminal device, and network device

Info

Publication number: WO2022151085A1
Application number: PCT/CN2021/071576
Authority: WO
Inventors: 林雪; 王淑坤
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2022-07-21
Also published as: CN116530183A

Abstract

The present application relates to a beam management method, a terminal device, and a network device. Said method comprises: in a small data transmission (SDT) process, when a first condition is satisfied, a terminal device sending first indication information to a network device, wherein the first indication information comprises information of a first beam or information of a synchronization signal block (SSB). By means of the embodiments of the present application, beam management in the SDT process can be implemented.

Description

Beam management method, terminal device and network device

technical field

The present application relates to the field of communications, and more particularly, to a beam management method, terminal equipment and network equipment.

Background technique

In the fifth generation mobile communication 5G New Radio (NR) system, the Radio Resource Control (RRC) state of the terminal includes three states: RRC idle state (RRC_IDLE), RRC inactive state (RRC_INACTIVE) and RRC connected state (RRC_CONNECTED). The terminal in the RRC_INACTIVE state does not support data transmission. When the data to be transmitted arrives, the terminal in the RRC_INACTIVE state can quickly restore the connection, and is released to the INACTIVE state after the data transmission is completed. Obviously, for a UE with a small amount of data and a low transmission frequency, such a transmission mechanism will lead to unnecessary power consumption and signaling overhead. To this end, it is necessary to carry out research on the Small Data Transmission (SDT) mechanism in the RRC_INACTIVE state. There are still many problems to be solved. For example, in NR, there can be multiple small data transmissions in the same SDT process. The time may be long, and there may be a need for beam changes during the period. How to perform beam management in the SDT process is one of the important issues to be solved.

SUMMARY OF THE INVENTION

In view of this, embodiments of the present application provide a beam management method, terminal device, and network device, which can be used to implement beam management in an SDT process.

An embodiment of the present application provides a beam management method, which is applied to a terminal device, including:

During the small data transmission SDT process, when the first condition is met, the terminal device sends first indication information to the network device, where the first indication information includes information of the first beam or information of the synchronization signal block SSB.

An embodiment of the present application provides a beam management method, which is applied to a network device, including:

During the SDT process, the network device receives the first indication information sent by the terminal device, where the first indication information includes the information of the first beam or the information of the SSB.

The embodiment of the present application also provides a terminal device, including:

The sending module is configured to send the first indication information to the network device in the case of meeting the first condition during the SDT process, where the first indication information includes the information of the first beam or the information of the synchronization signal block SSB.

The embodiment of the present application also provides a network device, including:

The receiving module is used for the network device to receive the first indication information sent by the terminal device during the SDT process, where the first indication information includes the information of the first beam or the information of the SSB.

An embodiment of the present application further provides a terminal device, including: a processor and a memory, where the memory is used to store a computer program, and the processor invokes and executes the computer program stored in the memory to execute the above method.

An embodiment of the present application further provides a network device, including: a processor and a memory, where the memory is used to store a computer program, and the processor invokes and executes the computer program stored in the memory to execute the above method.

An embodiment of the present application further provides a chip, including: a processor, configured to call and run a computer program from a memory, so that a device on which the chip is installed executes the above method.

Embodiments of the present application further provide a computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the above method.

Embodiments of the present application further provide a computer program product, including computer program instructions, wherein the computer program instructions cause a computer to execute the above method.

The embodiments of the present application also provide a computer program, the computer program enables a computer to execute the above method.

According to the embodiments of the present application, during the SDT transmission process, the terminal device may send indication information to the network device, where the indication information includes beam information or SSB information. Based on the indication information, the terminal device and the network device may change the current beam to The indicated beam solves the beam change requirement in the SDT continuous transmission process and realizes the beam management in the SDT process.

Description of drawings

FIG. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application.

FIG. 2 is a schematic diagram of a small data transmission process in an LTE system.

FIG. 3 is a schematic diagram of a transmission process of preconfigured uplink resources in an LTE system.

FIG. 4 is a schematic diagram of the effect of a beam scanning mechanism in an NR system.

FIG. 5 is a schematic diagram of the effect of a synchronization signal block in a synchronization signal burst group in an NR system.

FIG. 6 is a schematic diagram of the effect of the burst period of the synchronization signal in an NR system.

FIG. 7 is a flowchart of a method for beam management on a terminal side according to an embodiment of the present application.

FIG. 8 is a flowchart of a network-side beam management method according to an embodiment of the present application.

FIG. 9 is a schematic structural block diagram of a terminal device according to an embodiment of the present application.

FIG. 10 is a schematic structural block diagram of a network device according to an embodiment of the present application.

FIG. 11 is a schematic block diagram of a communication device according to an embodiment of the present application.

FIG. 12 is a schematic block diagram of a chip according to an embodiment of the present application.

FIG. 13 is a schematic block diagram of a communication system according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a wideband Code Division Multiple Access (CDMA) system (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (Long Term Evolution, LTE) system, Advanced Long Term Evolution (Advanced long term evolution, LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) unlicensed spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device (Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. , the embodiments of the present application can also be applied to these communication systems.

Optionally, the communication system in this embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA) distribution. web scene.

The embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, where terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, Remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user equipment, etc.

The terminal device can be a station (STAION, ST) in the WLAN, can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a personal digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, next-generation communication systems such as end devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In this embodiment of the present application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, and satellites) superior).

In this embodiment of the present application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, and an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.

As an example and not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In this embodiment of the present application, the network device may be a device for communicating with a mobile device, and the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA , it can also be a base station (NodeB, NB) in WCDMA, it can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or in-vehicle equipment, wearable devices and NR networks The network equipment (gNB) in the PLMN network or the network equipment in the future evolved PLMN network, etc.

As an example and not a limitation, in this embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a High Elliptical Orbit (HEO) ) satellite etc. Optionally, the network device may also be a base station set in a location such as land or water.

In this embodiment of the present application, a network device may provide services for a cell, and a terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell). Pico cell), Femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

FIG. 1 schematically shows one network device 1100 and two terminal devices 1200. Optionally, the wireless communication system 1000 may include a plurality of network devices 1100, and the coverage of each network device 1100 may include other numbers terminal equipment, which is not limited in this embodiment of the present application. Optionally, the wireless communication system 1000 shown in FIG. 1 may also include other network entities such as a mobility management entity (Mobility Management Entity, MME), an access and mobility management function (Access and Mobility Management Function, AMF). This is not limited in the application examples.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is used to describe the association relationship of associated objects, for example, it means that there can be three relationships between the associated objects before and after, for example, A and/or B can mean: A alone exists, A and B exist simultaneously, There are three cases of B alone. The character "/" in this document generally indicates that the related objects are "or". In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect corresponding relationship between the two, or may indicate that there is an associated relationship between the two, or indicate and be instructed, configure and be instructed configuration, etc.

In order to clearly illustrate the idea of the embodiments of the present application, firstly, a brief description is given of a processing procedure of data transmission in an inactive state in a communication system.

(1) About small data transmission EDT in LTE system

Referring to Figure 2, EDT (Early Data Transmission) has been introduced in the LTE system, that is, small data transmission (sometimes also called early data transmission or early data transmission, etc.), during this process, the UE may always remain in an idle state Either in a suspend state or in an inactive state, the transmission of uplink and/or downlink small data packets can be completed. For the EDT process, the UE can complete the transmission of small data packets without entering the connected state. In terms of configuration, the network can configure a maximum transmission block size (TB size) that the current network allows transmission on the system information block SIB2, and the UE can determine the amount of data to be transmitted. If the amount of data to be transmitted is less than the maximum TB size, Then the UE can initiate EDT transmission; otherwise, the UE enters the connected state to transmit data using the normal connection establishment process.

(2) About pre-configured uplink resource PUR transmission

Referring to Figure 3, in LTE, for Narrow Band Internet of Things (NB-IoT) and enhanced Machine-Type Communication (eMTC) scenarios, the use of pre-configured uplink resources ( Preconfigured Uplink Resource, PUR) method for data transmission. Usually, the PUR is only valid in the currently configured cell, that is, when the UE detects a cell change and initiates random access in the new cell, the UE needs to release the PUR configured in the original cell. The PUR transmission process is similar to the aforementioned EDT transmission, except that the process of sending a preamble to obtain a timing advance (TA) and an uplink grant (UL grant) is omitted.

(3) Beam management in NR system

In mobile communication technology, spectrum is a scarce resource, and the low frequency band has a small available range and is occupied by existing communication systems for a long time. With the subsequent development of mobile communication Internet services, the demand for wireless communication and the requirement for transmission rate are getting higher and higher, so more frequency bands need to be tapped to support the development of future mobile communication. 5G supports millimeter-wave frequency bands in the FR2 frequency range (24.25GHz-52.6GHz) to meet the problem of insufficient wireless frequency bands. However, the propagation characteristics of millimeter waves are not ideal, the propagation loss is large, and the signal is easily blocked. Therefore, a beam sweeping mechanism is introduced. Refer to Figure 4 to meet the coverage requirements. Space for coverage. In beam sweeping, a synchronization signal needs to be sent in each beam direction. Referring to Figure 5, the synchronization signal of 5G is given in the form of a synchronization signal block (SS/PBCH block, SSB), including PSS, SSS and PBCH. With further reference to FIG. 6 , the 5G synchronization signal occurs periodically in the time domain in the form of a synchronization burst set (SS burst set). The actual number of beams transmitted by each cell is determined by the network configuration. The frequency of the cell determines the maximum number of beams that can be configured. Table 1 lists the relationship between the maximum number of SSBs and the frequency.

Table 1

频率范围(Frequency range)Frequency range	SSB最大个数LMaximum number of SSBs L
最大为3(2.4)GHzUp to 3(2.4)GHz	44
3(2.4)GHz—6GHz3(2.4)GHz—6GHz	88
6GHz—52.6GHz6GHz—52.6GHz	6464

During the initial access process, the UE determines the valid beam through the random access process to receive the Physical Downlink Shared Channel (PDSCH) and Physical Downlink Control Channel (PDCCH). Before transmitting the configuration indicator (TCI) state (TCI state) configuration and the TCI state activation command in the RRC Reconfiguration message, the UE has been using the beam determined by the initial access for data reception.

In the 5G NR system, the Radio Resource Control (RRC) state includes three states: RRC_IDLE (RRC idle state), RRC_INACTIVE (RRC inactive state), and RRC_CONNECTED (RRC connected state). The RRC_INACTIVE state is a new state introduced by the 5G system from the perspective of energy saving. For the UE in the RRC_INACTIVE state, the radio bearer and all radio resources will be released. At the same time, the UE side and the base station side keep the UE still accessing the context for quick recovery. For RRC connection, the network usually keeps the UE with infrequent data transmission in the RRC_INACTIVE state. That is to say, the UE in the RRC_INACTIVE state in the past did not support data transmission. When the uplink (Mobile Original, MO) or downlink (Mobile Terminated, MT) data arrives, the UE needs to restore the connection, and then release the data to the INACTIVE state after the data transmission is completed. . Obviously, for a UE with a small amount of data and a low transmission frequency, such a transmission mechanism will lead to unnecessary power consumption and signaling overhead.

At present, research on the Small Data Transmission (SDT) mechanism under RRC_INACTIVE has been carried out. There are two main research directions, one is SDT based on Random Access Channel (RACH), and the other is based on Random Access Channel (RACH). For SDT of Configured Grant (CG), the two types of schemes can refer to the EDT and PUR transmission process in LTE described above to a certain extent, but there are still many problems to be solved. For example, there is the concept of beam in LTE, And only supports one transmission (one shot data transmission); different from LTE, in NR, SDT can support continuous uplink and downlink data transmission in the same process, for example, there may be multiple small packet data transmissions in the same SDT process , the duration may be longer, then, if the initial access beam signal is poor, there may be a need for beam transformation during the transmission process. At this time, how to solve the problem of beam change in the SDT process is what the SDT technology needs to solve. one of the important issues.

To this end, an embodiment of the present application provides a beam management method, which is applied to a terminal device. Referring to FIG. 7 , the method includes:

S101 , in the SDT process, when the first condition is met, the terminal device sends first indication information to the network device, where the first indication information includes the information of the first beam or the information of the SSB.

According to the embodiments of the present application, in the process of SDT transmission, when beam transformation needs to be performed, the terminal device may send indication information to the network device, where the indication information includes beam information or SSB information. Based on the indication information, the terminal device and the network device The current beam can be changed to the indicated beam to solve the beam change requirement in the continuous SDT transmission process, realize beam management in the SDT process, and ensure high-performance data transmission.

Correspondingly, an embodiment of the present application further provides a beam management method, which is applied to a network device. Referring to FIG. 8 , the method includes:

S201. During the SDT process, the network device receives first indication information sent by the terminal device, where the first indication information includes information of the first beam or information of the SSB.

According to the embodiments of the present application, during the SDT process, the network device can receive the indication information sent by the terminal device, the indication information includes beam information or SSB information, and the indication information can be used by the network device to update the beam and solve the SDT continuous transmission process. Beam change requirements in the SDT process, realize beam management in the SDT process, and ensure reliable data transmission.

The embodiments of the present application may be implemented in various manners, which will be described in detail below.

● Mode 1: beam information is included in the indication information

In the embodiment of the present application, optionally, if the first indication information includes information of the first beam, the terminal device may perform at least one of the following processes:

① After sending the first indication information, the terminal device uses the beam corresponding to the first beam for data transmission;

② After sending the first indication information, the terminal device receives the second indication information sent by the network device, the second indication information is used to confirm the beam change, and after receiving the second indication information The terminal device uses the beam corresponding to the first beam for data transmission.

Correspondingly, in the embodiment of the present application, optionally, if the first indication information includes information of the first beam, the network device may perform at least one of the following processes:

① After receiving the first indication information, the network device uses the first beam for data transmission;

② After receiving the first indication information, the network device sends second indication information to the terminal device, the second indication information is used to confirm the beam change, and after sending the second indication information, the The network device uses the first beam for data transmission.

In the embodiment of the present application, optionally, the first beam is a currently optimal beam or the first beam is superior to a beam currently used by the terminal device.

In the embodiment of the present application, optionally, before the terminal device sends the first indication information to the network device, the terminal device measures the SSB during the SDT process, wherein the first beam is measured by the SSB definite.

In the embodiment of the present application, optionally, the first indication information may be carried by the medium access control layer control unit MAC CE in the physical uplink shared channel PUSCH; and/or, the second indication information may be carried by It is carried by the MAC CE in the physical downlink shared channel PDSCH.

In the embodiment of the present application, optionally, the information of the first beam includes an SSB index corresponding to the first beam.

● Mode 2: SSB information is included in the indication information

In the embodiment of the present application, optionally, if the first indication information includes SSB information, the terminal device performs the following processing:

After sending the first indication information, the terminal device receives third indication information sent by the network device, where the third indication information includes the information of the second beam; the terminal device adopts the second beam The corresponding beam performs data transmission.

Correspondingly, in the embodiment of the present application, optionally, if the first indication information includes SSB information, the network device performs the following processing:

After receiving the first indication information, the network device determines a second beam according to the SSB information; the network device sends third indication information to the terminal device, where the third indication information includes the Information of the second beam; the network device uses the second beam for data transmission.

In the embodiment of the present application, optionally, the information of the SSB includes at least one of the following: reference signal received power RSRP of one or more SSBs, one or more SSB indexes, including a plurality of sorted SSB indexes list of.

In the embodiment of the present application, optionally, before the terminal device sends the first indication information to the network device, the terminal device measures the SSB in the SDT process.

In the embodiment of the present application, optionally, the first indication information is carried by at least one of the following: MAC CE in PUSCH, radio resource control RRC, uplink control information UCI; and/or, the third indication The information is carried by MAC CE or DCI in PDSCH.

In the embodiment of the present application, optionally, the second beam is a currently optimal beam or the second beam is superior to a beam currently used by the network device.

In the embodiment of the present application, optionally, the information of the second beam includes an SSB index corresponding to the second beam.

In the above-described manners 1 and 2, optionally, the first condition may include at least one of the following conditions:

The terminal device determines that the current optimal beam is different from the currently used beam;

· The duration of using the current beam by the terminal device is greater than or equal to the first threshold.

Using at least one of the above embodiments of the present application, in the SDT transmission process, the terminal and the network can determine a good beam and update the beam, so beam transformation in the SDT process can be implemented, and data transmission reliability can be improved.

The implementation manner of the beam management method in the embodiment of the present application is described above through the embodiment, and the specific implementation process of the embodiment of the present application is described below by using a plurality of specific examples.

Example 1

In this embodiment, the UE feeds back the index corresponding to the best downlink beam to the network, and the implementation process is described in detail below.

1. For the UE that supports the SDT function, in the case that the SDT execution conditions are met, the UE selects an appropriate beam according to the measurement result to initiate the SDT process. The SDT process may be RACH-based SDT, or may also be CG-based SDT. The UE receives the PDCCH and/or PDSCH using the selected beam.

2. If the SDT transmission has not ended when the next SSB burst period arrives, the UE performs subsequent uplink or downlink SDT based on network dynamic scheduling, then the UE measures the SSB, and determines the best downlink beam according to the SSB measurement result.

3. If the best beam determined according to the latest measurement result is different from the currently used beam, or the time of using the current beam exceeds the preconfigured time length, the UE includes the first MAC CE in the valid uplink UL PUSCH transmission, and the described The first MAC CE is used to indicate the index of the best downlink beam determined by the network according to the current measurement result.

4. After the UE sends the first MAC CE, the behavior of the UE and the network side can include the following two situations:

Behavior 1: The UE uses the new beam to receive PDCCH and PDSCH after sending the first MAC CE; the network uses the new beam to send the PDCCH and PDSCH after receiving the first MAC CE;

Behavior 2: After receiving the first MAC CE, the network sends the second MAC CE to the UE, and the second MAC CE is used to confirm the beam change; after sending the second MAC CE, the network uses the new beam to perform PDCCH and Transmission of PDSCH; after receiving the second MAC CE, the UE uses the new beam to receive PDCCH and PDSCH.

Example 2

In this embodiment, the UE feeds back the downlink beam measurement list to the network, and the implementation process is described in detail below.

2. If the SDT transmission has not ended when the cycle arrives in the next SSB burst, the UE performs subsequent uplink or downlink SDT based on network dynamic scheduling, and the UE measures the SSB.

3. If the best beam determined according to the latest measurement result is different from the currently used beam, or if the current beam is used for longer than the preconfigured time length, the UE includes at least one of the following information in the valid uplink UL PUSCH transmission: A MAC CE, RRC signaling, UCI (transmitted through PUCCH), the first MAC CE or the RRC message or the UCI is used to report the SSB measurement result.

The SSB measurement result can be at least one of the following:

RSRP for one or more SSBs;

The index of one or more SSBs;

A list of SSBs containing the SSB indices ordered from best to worst.

4. After the UE sends the SSB measurement result, the behavior of the UE and the network side may include:

After the network receives the SSB measurement result, the network sends the second MAC CE or DCI to the UE, where the second MAC CE or DCI is used to indicate the changed SSB index of the beam. After sending the second MAC CE, the network side uses the new beam to send the PDCCH and PDSCH; after receiving the second MAC CE or DCI, the UE uses the new beam to receive the PDCCH and PDSCH.

Using the above at least one embodiment of the present application, during the SDT transmission process, the UE can select a good beam according to the measurement result and report it to the network side for beam update; the UE can also report the SSB measurement result corresponding to the good beam to the network side , which is used for beam update; correspondingly, the network side can determine a good beam through MAC CE and perform beam update. Based on this, beam update in the SDT process can be realized, the reliability of data transmission can be improved, and the system performance can be improved as a whole.

The specific settings and implementations of the embodiments of the present application have been described above through multiple embodiments from different perspectives. Corresponding to the processing method of at least one embodiment above, an embodiment of the present application further provides a terminal device 100, referring to FIG. 9, which includes:

The sending module 110 is configured to, during the SDT process, in the case of meeting the first condition, the terminal device sends first indication information to the network device, where the first indication information includes the information of the first beam or the information of the synchronization signal block SSB .

Optionally, the first condition includes: the terminal device determines that the currently optimal beam is different from the currently used beam; or,

The first condition includes: the duration of using the current beam by the terminal device is greater than or equal to the first threshold.

Optionally, the terminal device 100 further includes: a first transmission module, configured to adopt the first beam after sending the first indication information when the first indication information includes information of the first beam The corresponding beam performs data transmission.

Optionally, the terminal device 100 further includes: a receiving module, configured to receive the first indication information sent by the network device after sending the first indication information in the case that the first indication information includes information of the first beam Two indication information, the second indication information is used to confirm the change of the beam; and a second transmission module is used for data transmission using the beam corresponding to the first beam after receiving the second indication information.

Optionally, the first beam is a currently optimal beam or the first beam is better than a beam currently used by the terminal device.

Optionally, the terminal device 100 further includes: a measurement module, configured to measure the SSB in the SDT process before the terminal device sends the first indication information to the network device, wherein the first beam is determined by measuring the SSB of.

Optionally, the first indication information is carried by a MAC CE in the PUSCH; and/or the second indication information is carried by a MAC CE in the PDSCH.

Optionally, the information of the first beam includes an SSB index corresponding to the first beam.

Optionally, the terminal device 100 further includes: a receiving module, configured to receive a third indication sent by the network device after sending the first indication information when the first indication information includes SSB information information, the third indication information includes information of the second beam;

A transmission module, configured to use the beam corresponding to the second beam to perform data transmission.

Optionally, the information of the SSB includes at least one of the following: reference signal received power RSRP of one or more SSBs, one or more SSB indices, and a list including a plurality of sorted SSB indices.

Optionally, the terminal device 100 further includes: a measurement module, configured to measure the SSB in the SDT process before the terminal device sends the first indication information to the network device.

Optionally, the first indication information is carried by at least one of the following: MAC CE in PUSCH, radio resource control RRC, uplink control information UCI; and/or, the third indication information is carried by MAC CE in PDSCH or DCI carry.

Corresponding to the processing method of at least one embodiment above, an embodiment of the present application further provides a network device 200, referring to FIG. 10, which includes:

The receiving module 210 is used for the network device to receive the first indication information sent by the terminal device during the SDT process, where the first indication information includes the information of the first beam or the information of the SSB.

Optionally, the network device 200 further includes: a first transmission module, configured to use the first indication information after receiving the first indication information when the first indication information includes information of the first beam beam for data transmission.

Optionally, the network device 200 further includes: a first sending module, configured to send the terminal device to the terminal device after receiving the first indication information when the first indication information includes information of the first beam Sending second indication information, where the second indication information is used to confirm the beam change; and a second transmission module, configured to use the first beam for data transmission after the second indication information is sent.

Optionally, the network device 200 further includes: a determining module, configured to determine the second indication according to the SSB information after receiving the first indication information in the case that the first indication information includes SSB information beam;

a second sending module, configured to send third indication information to the terminal device, where the third indication information includes information of the second beam;

The third transmission module is used for the network device to use the second beam to perform data transmission.

Optionally, the second beam is a currently optimal beam or the second beam is better than a beam currently used by the network device.

Optionally, the information of the SSB includes at least one of the following: RSRP of one or more SSBs, one or more SSB indices, and a list including a plurality of sorted SSB indices.

Optionally, the information of the second beam includes an SSB index corresponding to the second beam.

The terminal device 100 and the network device 200 in the embodiments of the present application can implement the corresponding functions of the devices in the foregoing method embodiments, and the corresponding processes of each module (submodule, unit or component, etc.) in the terminal device 100 and the network device 200 , functions, implementation manners, and beneficial effects may refer to the corresponding descriptions in the foregoing method embodiments, which will not be repeated here.

It should be noted that the functions described by the respective modules (submodules, units, or components, etc.) in the terminal device 100 and the network device 200 in the embodiments of the present application may be implemented by different modules (submodules, units, or components, etc.), It can also be realized by the same module (sub-module, unit or component, etc.), for example, the first sending module and the second sending module can be different modules, or can be the same module, both can realize the Corresponding functions in the examples. In addition, the sending module and the receiving module in the embodiments of the present application may be implemented by the transceiver of the device, and some or all of the other modules may be implemented by the processor of the device.

11 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application, wherein the communication device 600 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, the communication device 600 may also include a memory 620 . The processor 610 may call and run a computer program from the memory 620 to implement the methods in the embodiments of the present application.

The memory 620 may be a separate device independent of the processor 610 , or may be integrated in the processor 610 .

Optionally, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices .

Among them, the transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of the antennas may be one or more.

Optionally, the communication device 600 may be the network device of this embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which is not repeated here for brevity.

Optionally, the communication device 600 may be a terminal device in this embodiment of the present application, and the communication device 600 may implement corresponding processes implemented by the terminal device in each method in the embodiment of the present application, which is not repeated here for brevity.

12 is a schematic structural diagram of a chip 700 according to an embodiment of the present application, wherein the chip 700 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, the chip 700 may further include a memory 720 . The processor 710 may call and run a computer program from the memory 720 to implement the methods in the embodiments of the present application.

The memory 720 may be a separate device independent of the processor 710 , or may be integrated in the processor 710 .

Optionally, the chip 700 may further include an input interface 730 . The processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.

Optionally, the chip 700 may further include an output interface 740 . The processor 710 can control the output interface 740 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which is not repeated here for brevity.

Optionally, the chip can be applied to the terminal device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application, which is not repeated here for brevity.

It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.

The above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an off-the-shelf programmable gate array (field programmable gate array, FPGA), an application specific integrated circuit (ASIC) or Other programmable logic devices, transistor logic devices, discrete hardware components, etc. The general-purpose processor mentioned above may be a microprocessor or any conventional processor or the like.

The above-mentioned memory may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory may be random access memory (RAM).

It should be understood that the above memory is an example but not a limitative description, for example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

FIG. 13 is a schematic block diagram of a communication system 800 according to an embodiment of the present application, where the communication system 800 includes a terminal device 810 and a network device 820 .

The terminal device 810 may be used to implement the corresponding functions implemented by the terminal device in the methods of the various embodiments of the present application, and the network device 820 may be used to implement the corresponding functions implemented by the network device in the methods of the various embodiments of the present application. function. For brevity, details are not repeated here.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions may be stored on or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted over a wire from a website site, computer, server or data center (eg coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (eg infrared, wireless, microwave, etc.) means to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes one or more available media integrated. The available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), among others.

It should be understood that, in various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art who is familiar with the technical scope disclosed in the present application can easily think of changes or substitutions. Covered within the scope of protection of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A beam management method, applied to terminal equipment, includes:

During the small data transmission SDT process, when the first condition is met, the terminal device sends first indication information to the network device, where the first indication information includes information of the first beam or information of the synchronization signal block SSB.
The method of claim 1, wherein,

The first condition includes: the terminal device determines that the currently optimal beam is different from the currently used beam;

or,

The first condition includes: the duration of using the current beam by the terminal device is greater than or equal to the first threshold.
The method according to claim 1 or 2, wherein,

If the first indication information includes the information of the first beam, after sending the first indication information, the terminal device uses the beam corresponding to the first beam to perform data transmission;

or,

If the first indication information includes the information of the first beam, after sending the first indication information, the method further includes: the terminal device receives the second indication information sent by the network device, and the first indication information is sent by the network device. The second indication information is used to confirm the beam change, and after receiving the second indication information, the terminal device uses the beam corresponding to the first beam to perform data transmission.
The method of claim 3, wherein,

The first beam is the currently optimal beam or the first beam is better than the beam currently used by the terminal device.
The method according to claim 3 or 4, wherein before the terminal device sends the first indication information to the network device, the method further comprises:

The terminal device measures the synchronization signal block SSB during the SDT process, wherein the first beam is determined by the measurement of the SSB.
The method according to any one of claims 3-5, wherein,

The first indication information is carried by the medium access control layer control unit MAC CE in the physical uplink shared channel PUSCH;

and / or,

The second indication information is carried by the MAC CE in the physical downlink shared channel PDSCH.
The method according to any one of claims 3-6, wherein,

The information of the first beam includes an SSB index index corresponding to the first beam.
The method according to claim 1 or 2, wherein,

If the first indication information includes SSB information, after sending the first indication information, the method further includes:

receiving, by the terminal device, third indication information sent by the network device, where the third indication information includes information about the second beam;

The terminal device uses the beam corresponding to the second beam for data transmission.
The method of claim 8, wherein,

The information of the SSB includes at least one of the following: reference signal received power RSRP of one or more SSBs, one or more SSB indices, and a list including a plurality of sorted SSB indices.
The method according to claim 8 or 9, wherein before the terminal device sends the first indication information to the network device, the method further comprises:

The terminal device measures SSB during SDT.
The method according to any one of claims 8-10, wherein,

The first indication information is carried by at least one of the following: MAC CE in PUSCH, radio resource control RRC, uplink control information UCI;

and / or,

The third indication information is carried by MAC CE or DCI in PDSCH.
A beam management method, applied to a network device, includes:

During the SDT process, the network device receives the first indication information sent by the terminal device, where the first indication information includes the information of the first beam or the information of the SSB.
The method of claim 12, wherein,

If the first indication information includes information of the first beam, after receiving the first indication information, the network device uses the first beam for data transmission;

or,

If the first indication information includes the information of the first beam, after receiving the first indication information, the method further includes: the network device sends second indication information to the terminal device, the first indication information is The second indication information is used to confirm the beam change, and after sending the second indication information, the network device uses the first beam for data transmission.
The method of claim 13, wherein,

The first beam is the currently optimal beam or the first beam is better than the beam currently used by the terminal device.
A method according to claim 13 or 14, wherein,

The first indication information is carried by the MAC CE in the PUSCH;

and / or,

The second indication information is carried by the MAC CE in the PDSCH.
The method of any one of claims 13-15, wherein,

The information of the first beam includes the SSB index corresponding to the first beam.
The method of claim 12, wherein,

If the first indication information includes SSB information, after receiving the first indication information, the method further includes:

determining, by the network device, a second beam according to the information of the SSB;

sending, by the network device, third indication information to the terminal device, where the third indication information includes information of the second beam;

The network device uses the second beam for data transmission.
The method of claim 17, wherein,

The second beam is the currently optimal beam or the second beam is better than the beam currently used by the network device.
A method according to claim 17 or 18, wherein,

The information of the SSB includes at least one of the following: RSRP of one or more SSBs, one or more SSB indices, and a list including a plurality of sorted SSB indices.
The method of any one of claims 17-19, wherein,

The first indication information is carried by at least one of the following: MAC CE in PUSCH, radio resource control RRC, uplink control information UCI;

and / or,

The third indication information is carried by MAC CE or DCI in PDSCH.
The method of any of claims 17-20, wherein,

The information of the second beam includes the SSB index corresponding to the second beam.
A terminal device including:

The sending module is configured to send the first indication information to the network device in the case of meeting the first condition during the SDT process, where the first indication information includes the information of the first beam or the information of the synchronization signal block SSB.
The terminal device of claim 22, wherein,

The first condition includes: the terminal device determines that the currently optimal beam is different from the currently used beam;

or,

The first condition includes: the duration of using the current beam by the terminal device is greater than or equal to the first threshold.
The terminal device according to claim 22 or 23, further comprising:

a first transmission module, configured to use a beam corresponding to the first beam for data transmission after the first indication information is sent when the first indication information includes the information of the first beam;

or,

a receiving module, configured to receive second indication information sent by the network device after sending the first indication information in the case that the first indication information includes the information of the first beam, the second indication information is used for confirming beam change; and, a second transmission module, configured to use the beam corresponding to the first beam to perform data transmission after receiving the second indication information.
The terminal device of claim 24, wherein,

The first beam is the currently optimal beam or the first beam is better than the beam currently used by the terminal device.
The terminal device according to claim 24 or 25, further comprising:

A measurement module, configured to measure the SSB in the SDT process before the terminal device sends the first indication information to the network device, wherein the first beam is determined by measuring the SSB.
The terminal device according to any one of claims 24-26, wherein,

The first indication information is carried by the MAC CE in the PUSCH;

and / or,

The second indication information is carried by the MAC CE in the PDSCH.
The terminal device according to any one of claims 24-27, wherein,

The information of the first beam includes the SSBindex corresponding to the first beam.
The terminal device according to claim 22 or 23, further comprising:

a receiving module, configured to receive third indication information sent by the network device after sending the first indication information in the case that the first indication information includes SSB information, where the third indication information includes information on the second beam;

A transmission module, configured to use the beam corresponding to the second beam to perform data transmission.
The terminal device of claim 29, wherein,

The information of the SSB includes at least one of the following: reference signal received power RSRP of one or more SSBs, one or more SSB indices, and a list including a plurality of sorted SSB indices.
The terminal device according to claim 29 or 30, further comprising:

A measurement module, configured to measure the SSB in the SDT process before the terminal device sends the first indication information to the network device.
The terminal device according to any one of claims 29-31, wherein,

The first indication information is carried by at least one of the following: MAC CE in PUSCH, radio resource control RRC, uplink control information UCI;

and / or,

The third indication information is carried by MAC CE or DCI in PDSCH.
A network device comprising:

The receiving module is used for the network device to receive the first indication information sent by the terminal device during the SDT process, where the first indication information includes the information of the first beam or the information of the SSB.
The network device of claim 33, wherein,

a first transmission module, configured to use the first beam for data transmission after receiving the first indication information when the first indication information includes information of the first beam;

or,

a first sending module, configured to send second indication information to the terminal device after receiving the first indication information in the case that the first indication information includes information of the first beam, the second indication information The indication information is used to confirm the change of the beam; and the second transmission module is used to transmit the data by using the first beam after sending the second indication information.
The network device of claim 34, wherein,

The first beam is the currently optimal beam or the first beam is better than the beam currently used by the terminal device.
A network device according to claim 34 or 35, wherein,

The first indication information is carried by the MAC CE in the PUSCH;

and / or,

The second indication information is carried by the MAC CE in the PDSCH.
The network device of any of claims 34-36, wherein,

The information of the first beam includes the SSB index corresponding to the first beam.
The network device of claim 33, further comprising:

a determining module, configured to determine a second beam according to the information of the SSB after the first indication information is received when the first indication information includes the information of the SSB;

a second sending module, configured to send third indication information to the terminal device, where the third indication information includes information of the second beam;

The third transmission module is used for the network device to use the second beam to perform data transmission.
The network device of claim 38, wherein,

The second beam is the currently optimal beam or the second beam is better than the beam currently used by the network device.
A network device according to claim 38 or 39, wherein,

The information of the SSB includes at least one of the following: RSRP of one or more SSBs, one or more SSB indices, and a list including a plurality of sorted SSB indices.
A network device according to any of claims 38-40, wherein,

The first indication information is carried by at least one of the following: MAC CE in PUSCH, radio resource control RRC, uplink control information UCI;

and / or,

The third indication information is carried by MAC CE or DCI in PDSCH.
The network device of any of claims 38-41, wherein,

The information of the second beam includes the SSB index corresponding to the second beam.
A terminal device, comprising: a processor and a memory, the memory is used to store a computer program, the processor calls and executes the computer program stored in the memory, and executes any one of claims 1 to 11. Methods.
A network device, comprising: a processor and a memory, the memory is used to store a computer program, the processor invokes and runs the computer program stored in the memory, and executes any one of claims 12 to 21. Methods.
A chip that includes:

A processor for invoking and running a computer program from the memory, so that the device on which the chip is installed executes the method according to any one of claims 1 to 21 .
A computer-readable storage medium for storing a computer program, wherein,

The computer program causes a computer to perform a method as claimed in any one of claims 1 to 21 .
A computer program product comprising computer program instructions, wherein,

The computer program instructions cause a computer to perform the method of any of claims 1-21.
A computer program that causes a computer to perform the method of any one of claims 1 to 21.