User equipment, base station and execution method thereof

Abstract

The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond 4G communication systems such as Long Term Evolution (LTE). The present disclosure relates to a user equipment, a base station and a method performed by the same, the method performed by the UE comprising: receiving a first broadcast signal comprising a first reference signal and second information related to a second reference signal, the second reference signal being associated with the first reference signal, the second information comprises first indication information indicating whether the UE can receive the second reference signal through a broadcast signal; under the condition that the first indication information indicates that the UE can receive the second reference signal through a broadcast signal, receiving the second reference signal through a second broadcast signal according to configuration information for the second reference signal; reporting first information related to the measurement of the first reference signal and the measurement of the second reference signal; a signal transmitted based on a beam associated with the first information is received from the base station.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of communications, and more particularly, to a beam management method and device. BACKGROUND

[0002] Considering the development of wireless communication generation after generation, these technologies have been mainly developed for services targeting humans, such as voice calls, multimedia services, and data services. As the 5th-generation (5G) communication systems are commercialized, it is expected that the number of connected devices will increase exponentially. These will be increasingly connected to communication networks. Examples of the Internet of Things can include vehicles, robots, drones, home appliances, displays, smart sensors connected to various infrastructures, construction machinery, and factory equipment. Mobile devices are expected to evolve in various forms, such as augmented reality glasses, virtual reality headsets, and hologram devices. There are ongoing efforts to develop improved 6G communication systems in order to provide various services by connecting hundreds of billions of devices and things in the 6th-generation (6G) era.

[0003] It is expected that the 6G communication system, which will be commercialized around 2030, will have significantly improved performance compared to the existing 5G communication system. Its peak rate will reach at least 50 Gbit / s, the user experience rate will reach at least 300 Mbit / s, the air interface latency will be less than 1 ms, and the air interface reliability will reach 10 -5 In addition to the above basic communication indicators, the 6G communication system will have a perception capability, an AI-related capability, and better security, interoperability, and sustainability.

[0004] In order for the 6G communication system to achieve the above indicators, more advanced air interface technologies and network technologies need to be developed. The evolution of extreme MIMO (extreme Multiple Input Multiple Output) is currently being considered, including the use of a super large-scale antenna array, the development and evolution of a distributed antenna system, and the design of a MIMO air interface algorithm with the assistance of AI. This technology can achieve higher spectral efficiency, greater coverage, and accurate positioning, perception functions, etc. In addition, technologies that help improve high-frequency coverage, including lenses and antennas based on metamaterials, new antenna architectures, and RIS, etc., also need better evolution and development.

[0005] To meet some of the new functions added to the 6G communication system, new technologies need to be developed in terms of network energy saving, air interface security, and network security, and the feasibility of converged technologies such as communication and sensing needs to be studied.

[0006] In addition, to improve spectral efficiency and overall network performance, the following technologies have been developed for the 6G communication system: full duplex technology for enabling uplink and downlink transmissions to use the same frequency resources at the same time; network technologies that comprehensively use satellites, high-altitude platform stations (HAPS), etc.; improved network structures for supporting mobile base stations, etc., and enabling network operation optimization and automation, etc.; dynamic spectrum sharing technologies via collision avoidance based on spectrum usage prediction; the use of artificial intelligence (AI) in wireless communications by utilizing AI from the design stage of developing 6G and internalizing end-to-end AI support functions to improve overall network operations; and next-generation distributed computing technologies that overcome user equipment (UE) computing capability limitations through ultra-high-performance computing and computing resources available on networks such as mobile edge computing (MEC), the cloud, etc. In addition, attempts are continuing to strengthen connectivity between devices, optimize networks, promote the softwareization of network entities, and increase the openness of wireless communications by designing new protocols to be used in 6G communication systems, developing mechanisms for realizing hardware-based secure environments and secure use of data, and developing technologies for maintaining privacy.

[0007] It is expected that research and development of the 6G communication system including hyper-connectivity of person to machine (P2M) and machine to machine (M2M) will bring the next hyper-connected experience. In particular, it is expected that services such as truly immersive extended reality (XR), high-fidelity mobile holograms, and digital replicas will be provided through the 6G communication system. In addition, services such as remote surgery for security and reliability enhancement, industrial automation, and emergency response will be provided through the 6G communication system, so that the technology can be applied to various fields such as industry, healthcare, automobiles, and home appliances. SUMMARY

[0008] According to an embodiment of the disclosure, a method performed by a user equipment (UE) in a communication system is provided, including:

[0009] receiving a first broadcast signal including a first reference signal and second information about a second reference signal associated with the first reference signal, the second information including first indication information indicating whether the UE can receive the second reference signal through a broadcast signal;

[0010] in case that the first indication information indicates that the UE can receive the second reference signal through a broadcast signal, receiving the second reference signal through a second broadcast signal according to configuration information for the second reference signal;

[0011] reporting first information about measurement of a first reference signal and measurement of a second reference signal;

[0012] receiving a signal transmitted based on a beam associated with the first information from a base station.

[0013] In an implementation form, the second information further includes at least one of: second indication information indicating that the second reference signal is used to determine an angle of a horizontal or vertical dimension, configuration information for the second reference signal, information about determination of the first information, information about reporting of the first information,

[0014] wherein the information about determination of the first information includes at least one of: parameter information about beam calculation, correspondence information of a result of measurement and a beam.

[0015] In an implementation form, the correspondence information of the result of measurement and the beam is correspondence information of a received signal ratio and an angle deviation value. For example, the terminal obtains the correspondence information through a table.

[0016] In an implementation form, the angle deviation value in the correspondence information corresponds to a plurality of angle ranges in a horizontal or vertical direction.

[0017] In an implementation form, the configuration information of the second reference signal includes at least one of: transmission period information of the second reference signal, position information of a time domain unit for the second reference signal, frequency domain resource distribution density information for the second reference signal, information related to transmission power of the second reference signal.

[0018] In an implementation form, the information related to transmission power includes at least one of: a difference value with respect to transmission power of the first reference signal, transmission power information of the second reference signal.

[0019] In an implementation manner, if the configuration information of the second reference signal does not include the frequency domain resource distribution density information of the second reference signal, the frequency domain resource distribution density of the second reference signal is same as the frequency domain resource distribution density of the first reference signal, or the frequency domain resource distribution density of the second reference signal is a pre-stored value.

[0020] In an implementation manner, the frequency domain resource distribution density information of the second reference signal includes at least one of the following: information indicating that the frequency domain resource distribution density of the second reference signal is same as the frequency domain resource distribution density of the first reference signal, a frequency domain resource distribution density value of the second reference signal, and information related to a correlation relationship between the frequency domain resource distribution density of the second reference signal and the frequency domain resource distribution density of the first reference signal.

[0021] In an implementation manner, if the number of the second reference signals is multiple, the frequency domain resource distribution density of at least one of the multiple second reference signals is same as the frequency domain resource distribution density of the first reference signal, and / or the frequency domain resource distribution density of the remaining second reference signals is determined based on the frequency domain resource distribution density of the first reference signal.

[0022] In an implementation manner, if the configuration information of the second reference signal does not include the transmission period information of the second reference signal, the transmission period of the second reference signal is same as the transmission period of the first reference signal, or the transmission period of the second reference signal is a pre-stored value.

[0023] In an implementation manner, the transmission period information of the second reference signal includes at least one of the following: information indicating that the transmission period of the second reference signal is same as the transmission period of the first reference signal, a transmission period of the second reference signal, and information related to a correlation relationship between the transmission period of the second reference signal and the transmission period of the first reference signal.

[0024] In an implementation manner, the second reference signal includes multiple second reference signals,

[0025] the transmission periods of the multiple second reference signals are different, or

[0026] the transmission periods of the multiple second reference signals are same.

[0027] In an implementation manner, the transmission period of at least one of the multiple second reference signals is same as the transmission period of the first reference signal, and / or the transmission period of the other second reference signals is determined based on the transmission period of the first reference signal.

[0028] In an implementation manner, part of the second information is obtained through a sequence of a synchronization signal in the received first broadcast signal.

[0029] In an implementation manner, the second reference signal comprises a plurality of second reference signals, and the configuration information comprises corresponding configuration information of each of the plurality of second reference signals.

[0030] The second information further comprises dimension information indicating a corresponding beam of each of the plurality of reference signals.

[0031] In an implementation manner, the information related to the reporting of the first information comprises at least one of the following:

[0032] Information indicating that the first information is transmitted through a resource scheduled by DCI or a reserved resource activated by DCI;

[0033] Information indicating that the first information is transmitted through PUSCH in message A of random access;

[0034] Information indicating that message A is transmitted through a random access resource corresponding to the first information;

[0035] Information indicating that the first information is transmitted through message 3 of random access, or

[0036] Information indicating that message 1 is transmitted using a random access resource corresponding to the first information.

[0037] In an implementation manner, the random access resource comprises RO and / or a preamble.

[0038] In an implementation manner, the information related to the correspondence between the first information and the random access resource is obtained through the second information or pre-stored information of the UE.

[0039] In an implementation manner, at least part of the second information is obtained through MIB and / or SIB.

[0040] In an implementation manner, part of the second information is pre-stored.

[0041] In an implementation manner, the first indication information is obtained through MIB, and other information in the second information is obtained through SIB and / or is pre-stored.

[0042] In an implementation, the first broadcast signal or the second broadcast signal is a synchronization signal physical broadcast channel block (SSB). In an implementation, the second broadcast signal is a broadcast signal carrying the second reference signal, such as a new type of SSB, or an SSB including the second reference signal, or a broadcast signal including only the second reference signal, or a broadcast signal including the second reference signal and a part of an SSB, etc.

[0043] In an implementation, the configuration information for the second reference signal includes a periodicity of the second reference signal, and quantity related information.

[0044] In an implementation, a bandwidth of the second reference signal is the same as a bandwidth of the first reference signal.

[0045] In an implementation, a transmission power of the second reference signal is the same as a transmission power of the first reference signal.

[0046] In an implementation, a last group of the first reference signal in time domain in the second broadcast signal and the second reference signal are transmitted consecutively, such as the last group of the first reference signal in time domain and the second reference signal are consecutively transmitted in time domain.

[0047] In an implementation, the last group of the first reference signal in time domain and the second reference signal are transmitted using a same sequence.

[0048] In an implementation, the UE transmits the first information using an RO associated with a narrow beam.

[0049] In an implementation, the configuration information related to random access received by the UE includes configuration information of two groups of ROs, and each group of ROs includes starting RO related information and RO quantity related information.

[0050] In an implementation, the two groups of ROs include a first RO subgroup and a second RO subgroup, the first RO subgroup is associated with a wide beam, and different ROs in the second RO subgroup are associated with different narrow beams of an SSB.

[0051] In an implementation, narrow beams of a same SSB are associated with multiple ROs.

[0052] In an implementation, the UE determines whether to perform random access through a wide beam based on a threshold. For example, the threshold is obtained through a SIB.

[0053] In an implementation manner, the UE determines an angle offset value corresponding to the measurement result according to correspondence information of a received signal ratio and an angle offset value, and transmits the first information using an RO corresponding to the angle offset value. For example, the RO corresponds to an SSB index, an angle offset value.

[0054] In an implementation manner, the RO corresponds to an SSB index, a horizontal angle offset value, and a vertical angle offset value.

[0055] In an implementation manner, a plurality of ROs of frequency division multiplexing correspond to the same SSB index, the same horizontal angle offset value, and the same vertical angle offset value.

[0056] According to an embodiment of the present disclosure, a method performed by a user equipment (UE) in a communication system is provided, comprising:

[0057] In a case where the UE does not report a candidate beam, configuration information for beam failure recovery is received, the configuration information including first preamble-related information, the first preamble being used for a beam failure recovery request;

[0058] If a beam failure is detected, then:

[0059] A first reference signal and a second reference signal associated with the first reference signal are measured to obtain third information related to beam failure recovery,

[0060] The third information related to beam failure recovery is transmitted to a base station, including:

[0061] The first preamble is transmitted using an RO corresponding to the third information, or

[0062] The first preamble is transmitted using an RO associated with the first reference signal, and the third information is transmitted through a message 3.

[0063] The first preamble is not related to a candidate beam for beam failure recovery.

[0064] In an implementation manner, the third information includes information related to a candidate beam for beam failure recovery.

[0065] In an implementation manner, the third information includes information related to measurement results of the first reference signal and the second reference signal.

[0066] In an implementation manner, the UE transmits the first preamble using an RO corresponding to the measurement result.

[0067] According to an embodiment of the present disclosure, a method performed by a user equipment (UE) in a communication system is provided, comprising:

[0068] In a data transmission process, a measurement is performed on a reference signal transmitted by a base station to obtain a first measurement result;

[0069] If a beam failure is detected based on the first measurement result, a measurement request is sent to the base station, the measurement request including a difference between the first measurement result and a measurement result when the connection beam is selected.

[0070] According to an embodiment of the present disclosure, a method performed by a base station in a communication system is provided, comprising:

[0071] sending a first broadcast signal, the first broadcast signal including a first reference signal and second information related to a second reference signal, the second reference signal being associated with the first reference signal, the second information including first indication information indicating whether a UE can receive, through a broadcast signal, information related to the second reference signal;

[0072] in a case where the first indication information indicates that the UE can receive, through a broadcast signal, information related to the second reference signal, transmitting the second reference signal through a second broadcast signal according to configuration information for the second reference signal;

[0073] receiving first information related to a measurement of a first reference signal and a measurement of a second reference signal;

[0074] determining a beam based on the first information;

[0075] sending a signal based on the beam.

[0076] In an implementation manner, the second information further includes at least one of the following: second indication information indicating that the second reference signal is used to determine an angle of a horizontal or vertical dimension, configuration information for the second reference signal, information related to determination of the first information, information related to reporting of the first information,

[0077] wherein the information related to determination of the first information includes at least one of the following: parameter information related to beam calculation, correspondence relationship information between a result of the measurement and a beam.

[0078] In an implementation manner, the configuration information of the second reference signal includes at least one of the following: transmission period information of the second reference signal, position information of a time domain unit for the second reference signal, frequency domain resource distribution density information for the second reference signal, and information related to transmission power of the second reference signal.

[0079] In an implementation manner, the information related to transmission power includes at least one of the following: a difference relative to transmission power of the first reference signal, and transmission power information of the second reference signal.

[0080] In an implementation manner, if the frequency domain resource distribution density information of the second reference signal is not included in the configuration information of the second reference signal, the frequency domain resource distribution density of the second reference signal is same as the frequency domain resource distribution density of the first reference signal.

[0081] In an implementation manner, the frequency domain resource distribution density information of the second reference signal comprises at least one of the following: information indicating that the frequency domain resource distribution density of the second reference signal is same as the frequency domain resource distribution density of the first reference signal, a frequency domain resource distribution density value of the second reference signal, information related to a correlation relationship between the frequency domain resource distribution density of the second reference signal and the frequency domain resource distribution density of the first reference signal.

[0082] In an implementation manner, if the number of the second reference signals is multiple, the frequency domain resource distribution density of at least one of the multiple second reference signals is same as the frequency domain resource distribution density of the first reference signal, and / or the frequency domain resource distribution density of the remaining second reference signals in the multiple second reference signals is determined based on the frequency domain resource distribution density of the first reference signal.

[0083] In an implementation manner, if the transmission period information of the second reference signal is not included in the configuration information of the second reference signal, the transmission period of the second reference signal is same as the transmission period of the first reference signal.

[0084] In an implementation manner, the transmission period information of the second reference signal comprises at least one of the following: information indicating that the transmission period of the second reference signal is same as the transmission period of the first reference signal, a transmission period of the second reference signal, information related to a correlation relationship between the transmission period of the second reference signal and the transmission period of the first reference signal.

[0085] In an implementation manner, the second reference signal comprises multiple second reference signals,

[0086] the transmission periods of the multiple second reference signals are different, or

[0087] the transmission periods of the multiple second reference signals are same.

[0088] In an implementation manner, the transmission period of at least one of the multiple second reference signals is same as the transmission period of the first reference signal, and / or the transmission period of the other second reference signal in the multiple second reference signals is determined based on the transmission period of the first reference signal.

[0089] In an implementation manner, part of the second information is obtained through a sequence of a synchronization signal in the received first broadcast signal.

[0090] In an implementation manner, the second reference signal comprises a plurality of second reference signals, and the configuration information comprises corresponding configuration information of each of the plurality of second reference signals.

[0091] The second information further comprises dimension information indicating a corresponding beam of each of the plurality of reference signals.

[0092] In an implementation manner, the information related to the reporting of the first information comprises at least one of the following:

[0093] Information indicating that the first information is transmitted through a resource scheduled by DCI or a reserved resource activated by DCI;

[0094] Information indicating that the first information is transmitted through PUSCH in message A of random access;

[0095] Information indicating that message A is transmitted through a random access resource corresponding to the first information;

[0096] Information indicating that the first information is transmitted through message 3 of random access, or

[0097] Information indicating that message 1 is transmitted using a random access resource corresponding to the first information.

[0098] In an implementation manner, the random access resource comprises RO and / or preamble.

[0099] In an implementation manner, the second information further comprises information related to the correspondence between the first information and the random access resource.

[0100] In an implementation manner, at least part of the second information is transmitted through MIB and / or SIB.

[0101] In an implementation manner, the first indication information is transmitted through MIB, and other information in the second information is transmitted through SIB.

[0102] According to an embodiment of the present disclosure, a method performed by a base station in a communication system is provided, comprising:

[0103] Transmitting configuration information for beam failure recovery to a user equipment (UE), the configuration information comprising information related to a first preamble for a beam failure recovery request;

[0104] Transmitting a first reference signal and a second reference signal associated with the first reference signal to the UE;

[0105] receiving a first preamble from the UE on a RO corresponding to third information related to beam failure recovery, or

[0106] receiving a first preamble from the UE on a RO associated with the first reference signal and receiving third information related to beam failure recovery from the UE through a message 3,

[0107] wherein the first preamble is not related to a candidate beam for beam failure recovery.

[0108] In an implementation form, the third information comprises information related to a candidate beam for beam failure recovery.

[0109] In an implementation form, the third information comprises information related to a measurement result of the first reference signal and a second reference signal. According to an embodiment of the disclosure, there is provided a method performed by a user equipment, UE, in a communication system, comprising:

[0110] receiving a measurement request from a base station, the measurement request comprising a difference between a first measurement result of a connection beam of the UE and a measurement result when the connection beam was selected;

[0111] configuring a range of measurement to the base station based on the difference.

[0112] According to an embodiment of the disclosure, there is provided a user equipment, UE, the UE comprising:

[0113] a transceiver configured to transmit and / or receive signals;

[0114] a controller configured to control the UE to perform the method according to an embodiment of the disclosure.

[0115] According to an embodiment of the disclosure, there is provided a base station, the base station comprising:

[0116] a transceiver configured to transmit and / or receive signals;

[0117] a controller configured to control the base station to perform the method according to an embodiment of the disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0118] Figure 1 a wireless network according to an embodiment of the disclosure is shown;

[0119] Figure 2 a base station according to an embodiment of the disclosure is shown;

[0120] Figure 3 a user equipment according to an embodiment of the disclosure is shown;

[0121] Figure 4 A diagram showing a terminal measuring beams in multiple directions and reporting the measurement results to a base station is shown;

[0122] Figure 5 An example block diagram of a CPE is shown;

[0123] Figure 6 A diagram showing beams between a CPE and a base station is shown;

[0124] Figure 7 A diagram showing an SSB structure according to embodiments of the disclosure is shown;

[0125] Figure 8 A diagram showing another SSB structure according to embodiments of the disclosure is shown;

[0126] Figure 9 A diagram showing yet another SSB structure according to embodiments of the disclosure is shown;

[0127] Figures 10-12 A diagram showing various examples of an indication of an auxiliary RS according to embodiments of the disclosure is shown;

[0128] Figures 13-14 A diagram showing a UE interacting with a base station according to embodiments of the disclosure is shown;

[0129] Figure 15 A diagram showing an example correspondence of beams and ROs is shown;

[0130] Figures 16-17 A diagram showing a UE interacting with a base station according to embodiments of the disclosure is shown;

[0131] Figure 18 A diagram showing an example correspondence of measurement values and beam directions is shown;

[0132] Figure 19 A diagram showing a structure of a user equipment according to at least one embodiment of the disclosure is shown;

[0133] Figure 20 A diagram showing a structure of a base station according to at least one embodiment of the disclosure is shown;

[0134] Figures 21 to 24 A diagram showing an SSB involving an auxiliary reference signal (or additional reference signal, A-RS) according to embodiments of the disclosure is shown;

[0135] Figure 25A , Figure 25B and Figure 31 A diagram showing a terminal or UE behavior according to embodiments of the disclosure is shown;

[0136] Figure 26A ,Figure 26B 、 Figure 27A 、 Figure 27B 、 Figure 32A 、 Figure 32B 、 Figure 33 FIG. 6 shows a schematic diagram of interactions between a UE and a base station according to embodiments of the present disclosure;

[0137] Figure 28 FIG. 7 shows a schematic diagram of an example relationship between a probing direction and a ratio of equivalent combined channels;

[0138] Figure 29 FIG. 8 shows a schematic diagram of different RO subgroups related to SSBs;

[0139] Figure 30 FIG. 9 shows a schematic diagram of resource arrangement of RO resources in time and frequency domain. DETAILED DESCRIPTION

[0140] Before undertaking the detailed description below, it can be advantageous to set forth definitions of certain terms and phrases used throughout this patent document: The terms “couple” and “coupled” and the like, refer to any connection or interconnection, either direct or indirect, that enables

[0141] Moreover, various functions described below can be implemented or supported by one or more computer programs, each of which is formed from computer readable program code and embodied in a computer readable medium. The terms "application" and "program" refer to one or more computer programs, software components, sets of instructions, procedures, functions, objects, classes, instances, related data, or a portion thereof. The phrase "computer readable medium" includes any medium that can be accessed by a computer including readable non-transitory media and communications media. By way of example, and not limitation, computer readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of computer readable program code means in the form of meaningful data or data. "Non-transitory" computer readable medium excludes wired, wireless, optical, or other communication links that transmit transitory electrical, electromagnetic or other signals.

[0142] Definitions for other certain words and phrases are provided throughout this patent document. Those of ordinary skill in the art will understand that such definitions apply to this disclosure as

[0143] The drawings included herein and the descriptions thereof merely preferred embodiments. It is understood that elements can be arranged and designed in a different manner, as

[0144] The following Figures 1 to 3 Various embodiments of the disclosure implemented in a wireless communication system are described. Figures 1 to 3 The description of the embodiments of the disclosure is not meant to imply physical or architectural limitations to the manner in which different embodiments can be implemented. Different embodiments of the disclosure can be implemented in any suitably-arranged communication system.

[0145] Figure 1 An example wireless network according to an embodiment of the disclosure is illustrated. Figure 1 The embodiment of the wireless network shown in FIG. 1 is for illustration only. Other embodiments of the wireless network 100 can be used without departing from the scope of the disclosure.

[0146] As Figure 1As shown, the wireless network includes a base station (next generation nodeB, gNB or gNodeB) 101, a gNB 102, and a gNB 103. The gNB 101 communicates with the gNB 102 and the gNB 103. The gNB 101 also communicates with at least one network 130, such as the Internet, a proprietary Internet Protocol (IP) network, or other data network.

[0147] The gNB 102 provides wireless broadband access to the network 130 for a first plurality of user equipment devices (UEs) within a coverage area 120 of the gNB 102. The first plurality of UEs includes a UE 111, which can be located in a small business (SB); a UE 112, which can be located in an enterprise (E); a UE 113, which can be located in a WiFi hot spot (HS); a UE 114, which can be located in a first residence (Rl); a UE 115, which can be located in a second residence (R2); and a UE 116, which can be a mobile device (M), such as a cell phone, a wireless laptop, a wireless personal digital assistant (PDA), and so on. The gNB 103 provides wireless broadband access to the network 130 for a second plurality of UEs within a coverage area 125 of the gNB 103. The second plurality of UEs includes the UE 115 and the UE 116, as well as subscriber stations (SSs, e.g., UEs) 117, 118, and 119. In some embodiments, one or more of the gNBs 101 103 can communicate with each other and with the UEs 111 116 using existing wireless communication techniques, and one or more of the UEs 111 119 can communicate directly with each other (e.g., the UEs 117 119) using other existing or proposed wireless communication techniques.

[0148] Depending on the network type, the term "base station" or "BS" can refer to any component (or collection of components) configured to provide wireless access to a network, such as a transmit point (TP), a transmit-receive point (TRP), a base station (BS), an eNodeB or eNB, a 5G base station (gNB), a macrocell, a femtocell, a wireless fidelity (WiFi) access point (AP), or other wireless-enabled devices. A base station can provide wireless access to a pluralit of remote terminals (e.g., 5G enabled communication devices and / or systems) according to one or more wireless communication protocols, such as 3GPP 5G new radio (NR), Long Term Evolution (LTE), LTE-Advanced (LTE-A), high speed packet access (HSPA), Wi-Fi 802.11a / b / g / n / ac, etc. For the sake of convenience, the various terms used to describe base station-type devices and functionality are used interchangeably in this patent document to refer to a network infrastructure component providing wireless access to remote terminals. Also, depending on the network type, the term "user equipment" (UE) can refer to any component such as mobile station (MS), subscriber station (SS), remote terminal, wireless terminal, receive point, or user device. For the sake of convenience, the various terms used to describe user equipment-type devices and functionality are used interchangeably in this patent document to refer to remote wireless equipment whether the UE is a mobile device (such as a mobile phone or smart phone) or a typically non-mobile device (such as a desktop computer or vending machine) that wirelessly accesses a BS.

[0149] Dotted lines show the approximate extents of the coverage areas 120 and 125 as

[0150] As described in more detail below, one or more of the UEs 111-119 include circuitry, programming or a combination thereof. In certain embodiments, one or more of the gNBs 101-103 include circuitry, programming or a combination thereof.

[0151] Although Figure 1 One example of a wireless network is illustrated, but Figure 1Various changes can be made. For example, wireless network 100 could include any number of gNBs and any number of UEs in any suitable arrangement. Also, gNB 101 could communicate directly with any number of UEs and provide those UEs access to network 130. Similarly, each gNB 102 103 could communicate directly with network 130 and provide UEs access to network 130. In addition, gNBs 101, 102, and / or 103 could provide access to other or additional external networks, such as external telephone networks or other types of data networks.

[0152] Figure 2 An example base station is shown in accordance with embodiments of the present disclosure. Figure 2 The embodiments of gNB 102 shown in Figure 1 gNBs 101 and 103 of FIG. 1 can have the same or similar configuration. However, gNBs appear in a variety of configurations, and Figure 2 The scope of the present disclosure is not limited to any particular implementation of gNBs.

[0153] As Figure 2 As shown in FIG. 2, gNB 102 includes multiple antennas 200a, 200n, multiple radio frequency (RF) transceivers 201a, 201n, transmit (TX) processing circuitry 203, and receive (RX) processing circuitry 204. gNB 102 also includes controller / processor 205, memory 206, and backhaul or network interface 207.

[0154] RF transceivers 201a, 201n receive incoming RF signals from antennas 200a, 200n, such as signals transmitted by UEs in network 100. RF transceivers 201a, 201n down-convert the incoming RF signals to generate intermediate frequency (IF) or baseband signals. The IF or baseband signals are sent to the RX processing circuitry 204, which generates processed baseband signals by filtering, decoding, and / or digitizing the baseband or IF signals. The RX processing circuitry 204 transmits the processed baseband signals to the controller / processor 205 for further processing.

[0155] The TX processing circuitry 203 receives analog or digital data (such as voice data, web data, e-mail, or interactive video game data) from the controller / processor 205. The TX processing circuitry 203 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate processed baseband or IF signals. The RF transceivers 201a-201n receive the outgoing processed baseband or IF signals from the TX processing circuitry 203 and up-convert the signals to RF signals that are transmitted via the antennas 201a-201n.

[0156] The controller / processor 205 can include one or more processors or other processing devices to manage the overall operation of the gNB 102. For example, the controller / processor 205 can control the reception of forward channel signals and the transmission of reverse channel signals by the RF transceivers 201a-201n, the RX processing circuitry 204, and the TX processing circuitry 203 in accordance with well-known principles. The controller / processor 205 can support additional functions as well, such as more advanced wireless communication functions.

[0157] For instance, the controller / processor 205 can support beamforming or directional routing operations in which outgoing signals from multiple antennas 200a-200n are weighted differently to effectively "steer" the outgoing signals in a desired direction. Any of a plurality of other functions can be supported in the gNB 102 by the controller / processor 205 as well.

[0158] The controller / processor 205 is also capable of executing programs and other processes located in the memory 206, such as an operating system (OS). The controller / processor 205 can move data into or out of memory 206 as

[0159] The controller / processor 205 is also connected to the backhaul or network interface 207. The backhaul or network interface 207 allows the gNB 102 to communicate with other devices or systems over a backhaul connection or over a network. It can support communication via any suitable wired or wireless connection, such as a wired or wireless local area network or a wired or wireless connection to a larger network, such as the Internet. The interface 207 includes any suitable structures for supporting communications over, for example, an Ethernet or RF transceiver. When the gNB 102 is implemented as part of a cellular communication system, such as a system that supports 5G, LTE, or LTE A, the interface 207 can allow the gNB 102 to communicate with other gNBs over a wired or wireless backhaul.

[0160] Memory 206 is connected to controller / processor 205. A portion of memory 206 may include random access memory (RAM), and another portion of memory 206 may include flash memory or other read-only memory (ROM).

[0161] although Figure 2 An example of gNB 102 is shown, but it is possible to see more. Figure 2 Various changes can be made. For example, gNB 102 can include any number of Figure 2 Each component is shown in the diagram. As a specific example, an access point may include multiple interfaces 207, and the controller / processor 205 may support routing functionality to route data between different network addresses. As another specific example, although shown as a single instance of TX processing circuitry 203 and a single instance of RX processing circuitry 204, gNB102 may include multiple instances of each (such as one per RF transceiver). For example, Figure 2 The various components can be combined, further subdivided, or omitted, and additional components can be added as needed.

[0162] Figure 3 An example user equipment according to an embodiment of the present disclosure is shown. Figure 3 The embodiment of UE 116 shown is for illustrative purposes only, and Figure 1 UEs 111, 115, 117, and 119 can have the same or similar configurations. However, UEs appear in multiple configurations, and Figure 3 This disclosure is not intended to limit the scope to any particular implementation of the UE.

[0163] like Figure 3 As shown, UE 116 includes an antenna 301, a radio frequency (RF) transceiver 302, a TX processing circuit 303, a microphone 304, and a receive (RX) processing circuit 305. UE 116 also includes a speaker 306, a controller or processor 307, an input / output (I / O) interface (IF) 308, an input device 309, a touchscreen display 310, and memory 311. Memory 311 includes an OS 312 and one or more applications 313.

[0164] The RF transceiver 302 receives, from the antenna 301, incoming RF signals transmitted by gNBs of the network 100. The RF transceiver 302 down-converts the incoming RF signals to generate IF or baseband signals. The IF or baseband signals are sent to the RX processing circuitry 305, which generates processed baseband signals by filtering, decoding, and / or digitizing the baseband or IF signals. The RX processing circuitry 305 transmits the processed baseband signals to the speaker 306, such as for voice data, or to the processor 307 for further processing, such as for web browsing data.

[0165] The TX processing circuitry 303 receives analog or digital voice data from the microphone 304 or other outgoing baseband data (such as web data, e-mail, or interactive video game data) from the processor 307. The TX processing circuitry 303 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate processed baseband or IF signals. The RF transceiver 302 receives the outgoing processed baseband or IF signals from the TX processing circuitry 303 and up-converts the baseband or IF signals to RF signals that are transmitted via the antenna 301.

[0166] The processor 307 can include one or more processors or other processing devices and execute the OS 312 stored in the memory 311 in order to control the overall operation of the UE 116. For example, the processor 307 can control the reception of forward channel signals and the transmission of reverse channel signals by the RF transceiver 302, the RX processing circuitry 305, and the TX processing circuitry 303 in accordance with well-known principles. In some embodiments, the processor 307 includes at least one microprocessor or microcontroller.

[0167] The processor 307 is also capable of executing other processes and programs stored in memory 311, such as a process for CSI reporting on uplink channels. The processor 307 can move data into or out of memory 311 as required by the processes executing on the processor 307. In some embodiments, the processor 307 is configured to execute the applications 313 based on the OS 312 or in response to signals received from gNBs or an operator. The processor 307 is also coupled to the I / O interface 308, which provides the UE 116 with the ability to connect to other devices such as laptop computers and portable computers. The I / O interface 308 is the communication path between these accessories and the processor 307.

[0168] The processor 307 is also connected to the touch screen display 310. The user of the UE 116 can use the touch screen display 310 to enter data into the UE 116. The touch screen display 310 can be a liquid crystal display, a light-emitting diode display, or other display capable of rendering text and / or at least limited graphics, such as from web sites.

[0169] The memory 311 is connected to the processor 307. A portion of the memory 311 can include a RAM, and another portion of the memory 311 can include a flash memory or other ROM.

[0170] Although Figure 3 One example of a UE 116 is shown, but various changes can be made Figure 3 For example, Figure 3 Various components in the UE 116 can be combined, further subdivided, or omitted and additional components can be added according to particular needs. As a specific example, the processor 307 can be divided into multiple processors such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Also, although Figure 3 Although the UE 116 is shown as being configured as a mobile telephone or smartphone, the UE can be configured to function as other types of mobile or stationary devices.

[0171] With the rapid development of mobile communication technology, higher requirements are put forward for the transmission rate of the network. In the process of deployment and development of 5G / 6G technology, the advantages of large bandwidth, high capacity and high rate of high frequency communication are obvious, but it also exposes the problems of large transmission loss, small coverage range, large power consumption and high cost, especially in the millimeter wave, THz and other bands. These problems, to some extent, limit the large-scale application of millimeter wave communication, and at present only a few countries can provide services in the corresponding frequency band.

[0172] The transmission distance of the signal is inversely proportional to the working frequency. For the same base station transmission power and the same transmission distance, the higher the transmission signal frequency, the greater the transmission path loss, and the weaker the signal strength received by the terminal. In order to meet the complete coverage of the cell of the high frequency signal, it can be realized by increasing the base station transmission power or increasing the base station construction density, but the sharp rise of the equipment cost and the base station energy consumption caused thereby becomes a major obstacle to the large-scale commercialization of high frequency communication.

[0173] Beamforming is a technology that focuses the energy of the base station's transmit beams by beamforming, uses narrower beams to transmit data, and improves the signal-to-noise ratio to achieve wider coverage and higher data transmission efficiency. In order to ensure the connection speed of the user accessing the base station, the broadcast beam for realizing the complete coverage of the cell uses a wide beam, and each wide beam corresponds to a beam set of narrow beams. When the base station uses a narrower beam width, the number of narrow beams corresponding to each wide beam increases. In order to determine the beam for communication between the terminal and the base station, the base station configures the terminal to perform a beam management process. Each narrow beam in the beam set corresponds to at least one reference signal (RS), and the terminal determines at least one narrow beam in the base station's transmit beam set by measuring the reference signal transmitted by the base station. This way can cause an increase in signaling overhead and / or latency.

[0174] In order to monitor the quality change of the transmission channel between the terminal and the base station, the terminal can measure the beams in multiple directions according to the configuration signaling of the base station, and report the measurement results to the base station, as shown in Figure 4 The terminal measures other beams related to the beam direction for communication, for example, the terminal measures the reference signal (CSI-RS, Channel State Information-Reference Signal) specified in the beam and reports the measurement result. The reported measurement result can be the index information (CSI-RS index) of the beam corresponding to the maximum RSRP (Reference Signal Received Power) in the measured reference signal power value (RSRP). Such index information can constitute a candidate beam or a candidate beam group. When the transmission quality changes, the base station switches the communication beam to one of the candidate beams according to the measurement information of the candidate beams reported by the terminal.

[0175] In addition, fixed wireless access (FWA) is a technology that uses CPE (Customer Premises Equipment) devices to achieve broadband connection for relatively fixed location places by receiving and forwarding base station signals of mobile operators. Fixed wireless access that supports 5G technology provides the potential for ultra-high speed, low latency and large capacity for next-generation wireless connection. In addition to home users, FWA can also provide economic and convenient broadband access for small and micro enterprises, shops and temporary places, and gradually begin to enter the industry Internet field of factories, parks, mines, ports and other scenes, and provide high-speed and low-latency 5G connection for Internet of Things terminals within a certain area.

[0176] In some areas where wired cables such as optical fibers cannot be laid (for cost reasons, road right reasons, building protection reasons, etc.), FWA can provide network access for users. It avoids road right acquisition, pipeline excavation, cable laying, wall perforation and other construction work, greatly simplifies the network construction process, shortens the construction period, and saves costs. Therefore, for many operators, FWA is a means of rapidly developing user scale, and also a very cost-effective business model. From the perspective of social significance, FWA can help families in economically underdeveloped areas quickly have network connection, enjoy information dividends, and improve the quality of life. In addition, in the rural areas which are the main market of FWA, there is usually additional spectrum capacity due to low population density.

[0177] The CPE device includes two parts, a signal receiving module 501 that communicates with the base station and a signal forwarding module 502 that communicates with other terminals, as shown in Figure 5 The signal receiving module 501 can communicate with the base station as a terminal, receive data from the base station, or send data to the base station; the signal forwarding module 502, whose function is similar to a network hotspot, provides services for one or more terminals in a designated area, sends data obtained from the signal receiving module 501 to different terminals, or receives information sent by different terminals and forwards it to the base station through the signal receiving module 501; the signal forwarding module 502 is connected to the signal receiving module 501, sends uplink data to the signal receiving module or receives downlink data from the signal receiving module. The signal receiving module 501 and the signal forwarding module 502 can be two modules of the CPE or two functions of one module. The connection between the base station and the signal receiving module 501 is wireless, and the connection between the signal forwarding module 502 and the terminal can be wired or wireless, such as network cable, WiFi, mobile network, optical fiber, etc.

[0178] Usually, the CPE is installed at a fixed position outside the building, such as a roof pole, to ensure stable communication quality in the direct path (LOS, Line of Sight) of the base station communication. Therefore, the transmission path between the CPE and the base station changes less, and the candidate beams of the transmission path do not need to be measured and monitored. As shown in Figure 6As shown, for the CPE device, the base station can only configure and send the beams in the direction of the connection between the base station and the CPE determined through the beam management process, and does not send and / or configure the CPE to measure the beams in other directions, so as to reduce the corresponding signaling overhead. At this time, the CPE can only receive the beams in the transmission direction sent by the base station and communicate with the base station through the beams until the data transmission is completed or the connection is interrupted. When the transmission environment changes, for example, the relative position of the CPE and the base station changes slightly due to wind blowing, the communication is not interrupted but the communication quality decreases, the data transmission speed decreases, but since there is no beam (candidate beam) measurement and signal quality comparison in other directions, and the triggering condition of communication interruption is not met, the CPE can only use the original beam for low-rate data transmission.

[0179] In an embodiment of the present disclosure, a beam management method is provided. A terminal (which can be a general UE or a CPE) determines a narrow beam for the base station to transmit by measuring a common signal sent by the base station and reporting the measurement result. Through the method provided in the present disclosure, the signaling overhead and / or time delay in beam management can be reduced.

[0180] For example, through the method of the present disclosure, the terminal can quickly determine a beam pair suitable for the current transmission environment for communication with the base station, thereby improving the data transmission efficiency. The method provided in the present disclosure can be used in the beam management, beam switching, beam recovery and other related processes of the terminal. In particular, for high-frequency communication, the traditional beam management method based on scanning and measurement of beams in different directions requires signaling overhead and time for determining the narrow beam for the terminal to communicate with the base station, which is inversely proportional to the width of the narrow beam. The wider the beam, the more beams need to be measured, and the greater the corresponding signaling overhead. Based on the method described in the present disclosure, the accuracy of the differential beam measurement and reporting by the terminal can be adjusted to obtain a narrow beam with corresponding accuracy, and the signaling overhead is greatly reduced.

[0181] In addition, for a terminal (such as a CPE) with small changes in the transmission channel, the terminal does not need to periodically measure and report the measurement results of the beams in multiple directions sent and configured by the base station, and can quickly obtain an accurate beam suitable for the new transmission environment, thereby reducing the signaling and resource overhead. According to the method of the present disclosure, such a terminal only needs to measure the common signal when the transmission signal quality meets a certain threshold condition, so as to obtain a preferred beam suitable for the new transmission path and ensure the data transmission rate and service quality. In particular, for a CPE terminal with LOS path transmission, a narrower high-gain beam is used for communication to improve the data transmission efficiency. The signaling overhead saved by the beam management and beam recovery related processes based on this method is more obvious.

[0182] In embodiments of the present disclosure, a SSB (Synchronization Signal and PBCH block) structure or configuration is designed, which contains a PSS (Primary Synchronization Signals) / SSS (Secondary Synchronization Signals) / PBCH (Physical Broadcast Channel) structure in a legacy SSB structure and at least one set of auxiliary RS, or which involves a legacy SSB and at least one set of associated auxiliary RS (e.g., transmitted through a broadcast signal) to be applicable to devices supporting certain beam patterns, such as devices supporting Differential Beamforming (DBF) technology. Embodiments of the present disclosure can be applicable to devices supporting DBF, or devices supporting other beam-related technologies, where the other beam-related technologies involve obtaining narrow beam-related information for communication through measurement of multiple associated reference signals. In the present disclosure, DBF technology is described as an example of such technologies for the sake of convenience in description. It should be understood that this is merely exemplary and not limiting.

[0183] In addition, for the sake of convenience in description, SSB and reference signals associated with SSB are collectively referred to as a new SSB or a new SSB in the present disclosure, which is merely for the sake of convenience in description, and such expressions are not intended to limit the present disclosure to the overall SSB structure including SSB and additional or auxiliary reference signals, but can cover various forms of organization of SSB and additional or auxiliary RS, for example, the auxiliary RS can be considered as part of the new SSB, together with the legacy SSB, as a new SSB, or the auxiliary RS can be considered as a kind of reference signal related to the legacy SSB (e.g., which is configured through the legacy SSB, or is otherwise associated with the legacy SSB), without being considered as part of the SSB.

[0184] According to the new SSB of the embodiment of the present disclosure, each auxiliary RS group contains at least one auxiliary RS, which is used to estimate the transmission channel characteristics of the differential beam transmitted by the auxiliary RS, in combination with the reference signal in the SSB transmitted by the beam, such as the DMRS (Demodulation Reference Signal), the estimated transmission channel characteristics can determine the offset angle of the relative angle of the terminal receiving the new SSB relative to the base station and the normal direction of the SSB. The terminal considers that the occasions of receiving PBCH, PSS, SSS, and auxiliary RS are in continuous symbols. Or in other words, the terminal receives PSS, SSS, PBCH, and auxiliary RS on continuous symbols. That is, the terminal receives SSB and auxiliary RS on continuous symbols. In this way, even if the mobile terminal has a smaller transmission channel change, the result of channel estimation based on the measurement result is more accurate.

[0185] In some embodiments, the distribution of the auxiliary RS is similar to the DMRS in the PBCH. For example, the auxiliary RS is distributed in the same way as the DMRS in the PBCH. Figure 7 For example, the structure shown in the figure is taken as an example, this SSB includes a traditional SSB structure and a group of auxiliary RS structures, the bandwidth of the auxiliary RS for measurement is the same as the bandwidth of the DMRS in the adjacent PBCH, the frequency domain interval is the same, and one symbol in the time domain is occupied. Among them, the resource corresponding to the auxiliary RS for measurement can be an additional auxiliary RS transmitted in the new SSB, and / or multiplexing the DMRS on other channels.

[0186] Optionally, other frequency domain resources at the same time as the auxiliary RS can also be used for the transmission of data / signaling / signals of other terminals. Therefore, in some cases, the density information of the auxiliary RS or the size of the occupied resource will affect the data transmission delay of other terminals. For example, only part of the resource in the bandwidth occupied by the auxiliary RS is used to transmit the auxiliary RS, and the size of the resource occupied by the auxiliary RS, that is, the density information of the auxiliary RS, can be obtained from the configuration information (for example, 1 / 4). The remaining resources (for example, RE) in the bandwidth can be used to transmit data. Optionally, the period of the auxiliary RS or the number of groups of auxiliary RS can be configured to reduce the change of the data transmission resource size caused by the auxiliary RS. For example, when the terminal in the connected state has a periodic low-latency data transmission requirement, the transmission requirement of the user can be compatible by adjusting the time distribution (for example, period) of the auxiliary RS or the frequency domain density distribution.

[0187] Optionally, the period configuration of the auxiliary RS can be adjusted to reduce the influence of the resource occupied by the auxiliary RS on the transmission delay of other terminals. For example, the period of the auxiliary RS is twice the SSB period.

[0188] For a legacy terminal, a legacy SSB structure can still be received, and the new SSB structure does not affect the initial access, random access and other related processes. For a new terminal (for example, a CPE) supporting differential beam receiving, measuring and reporting functions, the beam (transmitting and / or receiving beam of the base station) used for communication between the base station and the terminal in the current transmission environment can be quickly determined through the receiving and measuring of the new SSB, that is, the codebook or codebook index information of the base station can be obtained, and the beam scanning and measuring time and the corresponding signaling overhead for determining a high-gain narrow beam are shortened. Through the present application, the terminal can use a narrow beam for communication in the random access process, and the channel quality can be significantly enhanced, and the data transmission efficiency is improved.

[0189] Optionally, the number of auxiliary RS groups can be one or more, and each group is used for measuring a differential beam in a different direction and / or a different dimension. For example, as shown in the structure in Figure 8 two groups of auxiliary RSs (RS#1 and RS#2, or A-RS#1 and A-RS#2) can be used to determine the angles of narrow beams in the horizontal and vertical directions, or to determine the angles of narrow beams in other two directions. The terminal can use the measurement results of the two groups of auxiliary RSs and the measurement results of the DMRS in the SSB for channel estimation and calculation to determine the angle deviation of the beam used for communication between the terminal and the base station relative to the normal direction of the differential beam pair. The normal directions of different auxiliary RSs corresponding to the differential beams can be different. According to the relative relationship of the normal directions of different groups of auxiliary RSs and the angle deviation values obtained based on different groups of auxiliary RSs, the specific direction information of the communication narrow beam in the multi-dimensional space can be determined.

[0190] In the embodiments of the present disclosure, for the convenience of description, the DMRS in the PBCH is referred to as the first reference signal, or the last column of DMRS in the PBCH is referred to as the first reference signal, and the auxiliary reference signal is referred to as the second reference signal. For example, the auxiliary reference signal can include one or more groups of auxiliary reference signals, or the second reference signal can include one or more groups of second reference signals, such as auxiliary RS#1 and auxiliary RS#2. In some cases, if multiple groups of auxiliary reference signals are described, for the convenience of description, the auxiliary reference signal is also exemplarily named as the second reference signal, the third reference signal and the like in the description of the present disclosure, so as to facilitate clear description, for example, the auxiliary RS#1 is referred to as the second reference signal, and the auxiliary RS#2 is referred to as the third reference signal. It can be understood that in such description, the third reference signal can be considered as a kind of second reference signal. However, such naming is only exemplary, and other naming methods can also be used. In addition, the number of auxiliary reference signals 2 is also only exemplary, and the number of auxiliary RSs can be 1 or any integer greater than 1.

[0191] Optionally, the frequency domain resource distribution density of each auxiliary RS can be different from the frequency domain resource distribution density of the DMRS in the SSB. Alternatively, multiple auxiliary RSs can have different frequency domain resource distribution densities. The density information of the auxiliary RSs can be obtained directly from the MIB or SIB information of the SSB, or it can be indicated by receiving different PSS / SSS sequences in the SSB. Figure 9 As shown, the density of the first set of auxiliary RSs is the same as that of the DMRS, while the density of the second set of auxiliary RSs is half that of the first set. This information can be indicated using a 1-bit A-RS type signaling in the MIB. If A-RS=0, it indicates the same as the DMRS in the PBCH; if A-RS=1, it indicates that the RS distribution density is half that of the DMRS in the PBCH. Correspondingly, if the first set of auxiliary RSs is used to transmit differential beams in the horizontal direction to determine the horizontal angular offset, and the second set of auxiliary RSs is used to transmit differential beams in the vertical direction to determine the vertical angular offset, then because the distance from the peak of the differential beam in the vertical direction to the terminal is short, channel estimation can be completed using a small number of auxiliary RSs. In this case, the density of auxiliary RS#2 can be reduced to increase the number of resources serving other users and improve resource utilization. The base station can then send multiple configuration messages, each indicating the configuration information of multiple sets of auxiliary RSs.

[0192] The base station uses differential beam pairs to transmit the new SSB structure. When transmitting the traditional SSB structure, a first beam is used, such as a conventional beam (also called a "sum beam") generated by the existing system's beam generation method. When transmitting auxiliary RS#1, a second beam is used, such as a horizontal differential beam corresponding to the first beam. The second beam can be generated based on the first beam by dividing the generation parameters of the first beam into two groups, keeping the parameters of the first group unchanged, and changing the coefficients of the parameters of the second group to negative values ​​(e.g., 1 becomes -1). The first and second beams constitute a horizontal differential beam pair. This invention determines the terminal's angle information relative to the base station based on the measurement results of the differential beam pair. Similarly, transmitting auxiliary RS#2 uses a third beam, which is a vertical differential beam of the first beam. The third beam and the first beam form a vertical differential beam pair. Because the normal direction of the third beam is different from that of the second beam, the parameters it generates can be different from those of the second beam.

[0193] For the convenience of description, the method involved in the present application is described below by a differential beam pair composed of a first beam (corresponding to a first reference signal) and a second beam (corresponding to a second reference signal). For example, according to the configuration information, the first reference signal and the second reference signal contained in the SSB are measured respectively, and the measurement results are processed to realize the beam management process.

[0194] If multiple groups of auxiliary RSs are contained in the SSB, the configuration information can be multiple sets, and the terminal needs to perform related processes according to the configuration information of each group of auxiliary RSs and refer to the method of the auxiliary RS#1. In order to reduce the signaling overhead, if the configuration information of multiple groups of auxiliary RSs is the same, only one set of configuration information can be sent, or the terminal pre-stores the configuration information. For example, the "pre-stored" mode described in the present disclosure can be replaced by the "pre-defined" mode. For example, the mode described as pre-stored configuration information can also be described as pre-defined configuration information. For example, "pre-stored value" can also be replaced by "pre-defined value", "pre-determined value" and the like.

[0195] The terminal receives the conventional SSB, measures and reads the PBCH in the SSB, and obtains the necessary system information and signal synchronization. Among them, the terminal receives and measures the DMRS in the PBCH for channel estimation and L1 synchronization; the terminal reads the MIB information in the PBCH to obtain the cell information and / or cell information indication information required for accessing the network.

[0196] The information related to the auxiliary RS (or referred to as second information) can be carried in the SSB. For example, the MIB of PBCH and / or SIB1 (including SIB1 PDCCH and / or SIB1 PDSCH) in the SSB. Or, it can also be indicated by different PSS / SSS sequences in the SSB. The content of the information related to the auxiliary RS includes at least one of the following: whether the base station supports the differential beamforming function, the SSB structure type (traditional SSB, new SSB), whether the SSB contains auxiliary RS, the number of auxiliary RS groups contained in the SSB, the time-frequency resource location of the auxiliary RS (for example, time offset), the density of the auxiliary RS (frequency domain type), the power value used for transmitting the auxiliary RS (or, the power difference value relative to the power for transmitting the SSB, the energy value on each RE, or the energy value on each RE of the auxiliary RS group and the energy value on each RE of the DMRS), the form of reporting the RS measurement value (for example, at least one of the following: direct channel estimation value, other values (SINR, RSRP, etc.) calculated based on the measurement value, the offset value of the preferred beam angle relative to the normal direction, the beam index corresponding to the preferred beam), other parameters required for calculation (calculation method of the beam, or the correspondence relationship of the beam index), quantization accuracy of the reported measurement value, channel of the reported measurement value, method of reporting the measurement value. For example, different PSS / SSS sequences in the SSB can implicitly indicate the first indication information for indicating whether the UE can receive the auxiliary RS through the broadcast signal, for example, the PSS / SSS sequence represents information related to at least one of the SSB structure type (traditional SSB, new SSB), whether the SSB contains auxiliary RS, and the number of auxiliary RS groups contained in the SSB. Optionally, part or all of the information related to the auxiliary RS can be agreed and stored in the storage structure of the terminal in advance to reduce signaling overhead. If the terminal does not receive the related configuration information from the base station, the pre-stored value is used for subsequent processes. For example, the following content can be agreed in advance: the SSB measurement value reported by the terminal can be the ratio of the channel estimation value of the second reference signal and the first reference signal, and the ratio is quantized to 4-bit data and transmitted and reported through the subsequent msg3.

[0197] In some cases, most of the information related to the auxiliary RS is agreed (for example, predefined) and stored in advance, and only 1-2 bits of indication information need to be carried in the MIB for the terminal to determine whether this SSB is transmitted using differential beamforming or whether it contains multiple groups of auxiliary RS for measurement, or which group of auxiliary RS is contained (for example, whether the auxiliary RS for determining the horizontal direction is contained or the auxiliary RS for determining the vertical direction (for example, referred to as second indication information)). In this way, the terminal can quickly obtain the indication information of whether the auxiliary RS is contained in the MIB.

[0198] Optionally, the terminal determines whether to receive the auxiliary RS according to the indication information.

[0199] Optionally, the terminal can be agreed or configured in advance to receive the information of the position where the auxiliary RS can exist at the same time of receiving the SSB, and determine whether to process the part of information according to the indication information in the SSB to determine the narrow beam.

[0200] Optionally, the transmission period of the auxiliary RS can be different from the transmission period of the SSB, and the periods of the multiple groups of auxiliary RSs can also be different. For example, the period of the auxiliary RS#1 can be M times of the period of the SSB, the period of the auxiliary RS#2 can be N times of the period of the SSB, and M can be different from N. At this time, the terminal needs to determine whether the SSB contains the auxiliary RS for measurement or which group of auxiliary RSs for measurement according to the indication information carried in the SSB. For example, in the example shown in Figure 10 , the MIB contains two bits of indication information to indicate whether the SSB contains the auxiliary RS1 and / or the auxiliary RS2. When the indication information is 00, it means that the SSB structure does not contain the auxiliary RS; when the indication information is 01, it means that the SSB structure does not contain the auxiliary RS1 but contains the auxiliary RS2; when the indication information is 1, it means that the SSB structure contains the auxiliary RS1 and the auxiliary RS2.

[0201] Optionally, the transmission periods of the two groups of auxiliary RSs can be the same, for example, the SSB contains the two groups of auxiliary RSs at the same time or does not contain the two groups of auxiliary RSs at the same time. At this time, only 1 bit of indication information needs to be added in the MIB to indicate whether the SSB contains the two groups of auxiliary RSs at the same time.

[0202] Optionally, the terminal can also receive the resource information of the next SSB containing the auxiliary RS corresponding to the SSB in the SSB.

[0203] Optionally, the resource information can be a time offset value. At this time, if the SSB received by the terminal does not contain the auxiliary RS for measurement, the terminal can perform the measurement of the auxiliary RS on the SSB corresponding to the specified offset to determine the narrow beam, as shown in Figure 21 .

[0204] Optionally, the terminal can receive the auxiliary RS on the same SSB index resource of the next SSB period based on the period of the SSB.

[0205] Optionally, the terminal can be configured with a period-related parameter value. The value is used to indicate that there is the auxiliary RS for determining the narrow beam on the same SSB index resource of the next several periods of the SSB.

[0206] Optionally, the measurement of the next SSB includes the measurement of the last column of DMRS in PBCH and the measurement of at least one set of auxiliary RS, and the narrow beam is determined based on the measurement results. At this time, the transmission channel of the two sets of measurement results changes little, and the determined narrow beam direction is more accurate.

[0207] Optionally, the transmission period of the two sets of auxiliary RS can be inconsistent with the transmission period of SSB to reduce the signaling overhead of the additional RS. At this time, if the terminal fails to receive the auxiliary RS in the received SSB, the terminal can receive the DMRS and the auxiliary RS on the specified resource based on the indication information. After determining the narrow beam according to the measurement results, the random access process is performed using the resource corresponding to the narrow beam. Optionally, when a SSB burst includes multiple SSB repetition periods, the auxiliary RS can be transmitted only in the last L repetition periods within the SSB burst, as shown in Figure 22 . For example, L can be 1. At this time, the terminal accessing within the burst can complete the measurement of the auxiliary RS according to the configuration or indication information, and the access delay is shortened.

[0208] Optionally, the periods of the two sets of auxiliary RS can be the same, but they appear alternately to reduce the impact of the different resource sizes occupied by the auxiliary RS at different times on resource utilization and scheduling flexibility. At this time, the terminal can receive another set of auxiliary RS on the next resource according to the configuration information after receiving a set of auxiliary RS to determine the two-dimensional angle information. This method is suitable for scenarios with small user mobility but high resource utilization requirements. As shown in Figure 23 , the auxiliary RS transmitted with the SSB is different in different SSB bursts, for example, it appears alternately. At this time, the terminal can determine the time-frequency resource of the terminal receiving another auxiliary RS according to the configuration information in the SSB. Or, the terminal directly receives another auxiliary RS in the next period according to the period of the SSB.

[0209] Optionally, considering the accuracy of the measurement results, the terminal respectively uses the DMRS closest in time to the transmission of the auxiliary RS to determine the horizontal and vertical angles. For example, in the following Figure 23 , the terminal measures the DMRS in the two sets of SSBs respectively, and performs channel estimation on the measurement results of auxiliary RS#1 and RS#2 respectively to determine the horizontal and vertical angle values.

[0210] Optionally, the terminal can determine the resource information of the next auxiliary RS based on the burst period information of the SSB and the repetition transmission period of the SSB within the burst, as shown in Figure 24 .

[0211] Optionally, the time domain resource location of each group of auxiliary RSs relative to the SSB can be a fixed value, as shown in FIG. 25 to FIG. 27. Figure 11 As shown in FIG. 25 to FIG. 27, if the SSB contains auxiliary RS1 and auxiliary RS2, there will be RS1 for measurement at the fixed location 1 associated with the SSB, and there will be RS2 for measurement at the fixed location 2 associated with the SSB. If the SSB contains only a certain group of auxiliary RSs, for example, the SSB contains only auxiliary RS2 but does not contain auxiliary RS1, the fixed location 1 is not used to transmit auxiliary RS2.

[0212] Based on the new SSB structure, the new behavior of the UE can be, for example, as shown in any one of FIG. 25 to FIG. 27, and can include at least some of the following:

[0213] 1. The UE receives the SSB transmitted by the network side, and determines the related information of the auxiliary RS according to the information (e.g., MIB, SIB1) carried and / or indicated in the SSB.

[0214] The related information (e.g., referred to as second information) of the auxiliary RS includes at least one of the following: whether the base station supports the differential beamforming function, whether the SSB contains the auxiliary RS, the number of groups of auxiliary RSs contained in the SSB, the time-frequency resource location of the auxiliary RS, the power value used to transmit the auxiliary RS (or the power difference value of each RE relative to the power used to transmit the PBCH, the power value of each RE, the power value of each RE of the auxiliary RS group relative to the power value of each RE of the DMRS), the measurement value of the new SSB transmission (the time domain value of the received signal, the frequency domain value of the received signal, the channel estimation value, the RSRP, the SINR), the form of the measurement value reported by the terminal (e.g., the direct channel estimation value, other values calculated based on the measurement value, the beam direction determined based on the measurement value, the beam index corresponding to the beam determined based on the measurement value), the quantization accuracy of the reported measurement value, and the resource of the reported measurement value. If the form of the measurement value reported by the terminal is the beam-related information, the terminal also needs to obtain other parameters required for calculating the beam, such as the data processing method of the measurement value, the mapping relationship between the measurement value and the beam, the conversion method of the beam calculated based on multiple groups of auxiliary RSs and the actual beam, the correspondence between the beam index and the calculated beam, etc.

[0215] Optionally, to ensure the accuracy of the channel estimation result, the bandwidth of the transmitted auxiliary RS can be the same as that of the DMRS.

[0216] Optionally, considering the nonlinearity of the hardware, the power of the transmitted auxiliary RS can be the same as that of the DMRS.

[0217] Optionally, considering the mobility of the user, to ensure that the transmission channel changes little, the last column of DMRS and at least one group of auxiliary RSs in the PBCH can be transmitted continuously.

[0218] Optionally, to reduce the complexity of the user to detect the reference signal sequence, the last column of DMRS in the PBCH and at least one set of auxiliary RS can use the same sequence.

[0219] Optionally, to reduce the time required to read information, the terminal can read the relevant information of the auxiliary RS in stages. First, the UE determines whether the base station supports the differential beamforming function, and if the base station does not support the differential beamforming function, the remaining auxiliary RS related information also does not need to continue to read. If the base station supports the differential beamforming function, the UE continues to read the indication information of whether the SSB contains auxiliary RS, and if the SSB does not contain auxiliary RS, there is no need to continue to read the auxiliary RS related information. The information of whether the SSB contains auxiliary RS can be sent in the MIB. Through this method, the terminal can quickly determine whether it is necessary to receive auxiliary RS in the specified position. If this SSB contains at least one set of auxiliary RS, the UE continues to read the relevant information of the remaining auxiliary RS. Alternatively, this SSB does not contain auxiliary RS, and the UE can determine the time-frequency resource information of the next set of auxiliary RS according to the information contained in the SSB. The information of the remaining auxiliary RS and / or the next set of auxiliary RS can be obtained in the SIB, and this part of the signaling can contain more information bits and more accurate transmission information.

[0220] Optionally, to reduce signaling overhead, part of the information in the auxiliary RS related information can be sent in advance to the base station side, or agreed in advance and stored in the storage unit of the terminal.

[0221] Optionally, the indication information of the auxiliary RS can contain multiple sets of sub-indication information for indicating the relevant information of multiple sets of auxiliary RS respectively.

[0222] 2. The terminal receives and measures the first reference signal and the second reference signal according to the information in the SSB and / or the relevant information stored by the terminal, and obtains at least one measurement value.

[0223] The measurement value can be the channel estimation value determined based on the signal received by the terminal. It includes the equivalent first channel estimation value (channel estimation results 1) based on the received first reference signal, and the equivalent second channel estimation value (channel estimation results 2) based on the received second reference signal. It can also be extended to other channel estimation values corresponding to multiple sets of auxiliary RS, such as the equivalent third channel estimation value (channel estimation results 3) determined based on the third reference signal.

[0224] Optionally, if the data reading time of the terminal is longer, the terminal can first receive and measure the first reference signal and the second reference signal according to the auxiliary RS related information stored in advance by the UE, assuming that the SSB contains auxiliary RS. After the configuration data in the SSB is parsed and read, it is determined whether the measurement value is valid according to the obtained auxiliary RS related information. If the read auxiliary RS related information indicates that the SSB does not contain auxiliary RS, the measurement value corresponding to the current reception is not used for subsequent processes.

[0225] Optionally, if the data reading time of the terminal is longer, the auxiliary RS configuration information carried in the SSB can be the information of the auxiliary RS in the Nth (N is an integer greater than 0) SSB behind. The value of N can be stored in the storage unit of the terminal in advance, or carried and / or indicated in the SSB. As shown in the following table, if the indication information in the SSB is 11, it means that the Nth SSB behind contains two groups of auxiliary RS; if the indication information in the SSB is 00, it means that the Nth SSB behind does not contain auxiliary RS. In other words, the configuration information used by the terminal to measure the auxiliary RS in the SSB is determined based on the information carried in the Nth SSB in front. Figure 13

[0226] 3. The terminal reports the measurement result of the SSB according to the measurement result and the related configuration information, for example, reports the first information, which is related to the measurement of the first reference signal and the measurement of the second reference signal.

[0227] The terminal can obtain the related configuration information of the measurement result in the following at least one way: stored in the storage unit of the terminal in advance, obtained from the MIB, obtained from the system information (SIB1, SIB, SIB-DBF).

[0228] Among them, SIB-DBF is the system information related to the differential beam shaping, which can be obtained by the terminal through the on-demand request.

[0229] The configuration information reported by the terminal measurement result can be included in the information related to the reporting configuration, for example, included in the CSI-reportConfig. The related configuration information of the terminal measurement result report includes at least one of the following: the form of the reported measurement value, the related parameters required for calculating the reported measurement value (the calculation method of the beam, the correspondence relationship of the beam index), the quantization accuracy of the reported measurement value, the channel of the measurement value report, the resource used for the measurement value report, the related information required for the measurement value report, and the type of the report.

[0230] ​The form of the measurement value (or referred to as the first information) reported by the terminal can be configured in the reportQuantity parameter in the CSI-reportConfig, and the specific form can be at least one of the following:

[0231] - Channel estimation results of multiple reference signals obtained by the terminal through measurement

[0232] - Indirect values calculated by the terminal based on the received values, such as reference signal receiving power (RSRP), signal to interference plus noise ratio (SINR) of the reference signal, or signal to noise ratio (SNR) of the reference signal.

[0233] - Channel estimation results ratio 12 of multiple sets of differential beam pairs received by the terminal. For example, the channel estimation results ratio of the first reference signal and the second reference signal, which can be channel estimation results 1 / channel estimation results 2, or channel estimation results 2 / channel estimation results 1. Similarly, it can be extended to the ratio of the channel estimation results 3 of the first reference signal and the third reference signal, for example, signal ratio 13 = channel estimation results 1 / channel estimation results 3.

[0234] - The angle pointing deviation value of the normal direction (boresight direction) of the base station transmission beam used for terminal communication and the differential beam pair;

[0235] - The beam index of the base station transmission beam used for terminal communication, which is determined based on the angle deviation value and the beam index correspondence. The correspondence includes a one-to-one correspondence between the received signal ratio and the angle deviation value (or angle adjustment value), or a correspondence between different ratio ranges and angle deviation values or adjustment values. Through a received signal ratio, an angle deviation value (or angle adjustment value) can be obtained.

[0236] Optionally, the correspondence between the received signal ratio and the angle offset value can be configured in the form of a table. For example, as shown in Table 1. At this time, the terminal determines the corresponding angle value according to the measured received signal ratio, or determines the indication information (for example, the sub-angle index m, or the angle offset value m) corresponding to the angle value, where m is the numbering information of each range after the beam is divided into multiple sub-angles in the horizontal or vertical dimension. It should be understood that the specific values shown in Table 1 are only exemplary, and other values can also be used, or other forms other than numerical values can also be used to express the correspondence between the ratio range and the angle offset value m.

[0237] Table 1 Correspondence between ratio range and angle offset value (m)

[0238]

[0239] Reference Figure 25A The UE behavior related to A-RS periodic configuration can include:

[0240] The UE receives SSB;

[0241] The UE obtains configuration information in MIB, for example, the UE can determine whether the SSB is with A-RS;

[0242] The UE obtains configuration information in SIB, for example, the UE can obtain information related to the location of A-RS;

[0243] The UE measures the DMRS in PBCH and the associated A-RS;

[0244] The UE performs channel estimation and determines the related information of the narrow beam.

[0245] Reference Figure 25B The UE behavior related to A-RS periodic configuration can include:

[0246] The UE receives SSB;

[0247] The UE obtains configuration information in MIB, for example, the UE can determine whether the SSB is with A-RS; according to the MIB configuration information, determine whether the current SSB contains A-RS. If it contains A-RS, the UE measures the DMRS in PBCH and the associated A-RS; if it does not contain A-RS, the UE receives SIB and obtains configuration information in SIB, for example, the configuration information contains information related to the location of A-RS;

[0248] The UE receives SSB with A-RS based on the configuration information obtained in SIB and / or MIB, for example, receives the associated SSB on the specified time domain resource;

[0249] UE measures DMRS in PBCH and associated A-RS;

[0250] UE performs channel estimation and determines the related information of the narrow beam.

[0251] Reference Figure 26A The interaction between the UE and the base station (e.g. gNB) can include:

[0252] The base station sends SSB with A-RS to the UE, where the A-RS periodicity related configuration is included in MIB and / or SIB, the UE receives the SSB;

[0253] The UE performs MIB reading to obtain the SSB related information without A-RS;

[0254] The UE performs SIB reading, for example, the UE can obtain the location related information of A-RS;

[0255] The base station sends SSB with A-RS to the UE, the UE receives the SSB with A-RS from the base station;

[0256] The UE performs measurement on the new SSB. For example, in addition to the content that the UE can measure on the traditional SSB, the UE can additionally measure A-RS. For example, as shown in the following table, the UE can measure DMRS in PBCH and 2 A-RS. The number of A-RS is 2, which is only an example, and can also be other values. Figure 26B

[0257] Optionally, in order to obtain more accurate channel estimation results and the corresponding narrow beam, the measurement on the new SSB can include the measurement on the last column of DMRS in PBCH in the new SSB and the measurement on the auxiliary RS.

[0258] Reference Figure 27A The interaction between the UE and the base station (e.g. gNB) can include:

[0259] The base station sends SSB with A-RS to the UE, for example, the A-RS periodicity related configuration is included in MIB;

[0260] The UE performs MIB reading to obtain the SSB related information with A-RS;

[0261] The UE performs measurement on A-RS. Reference Figure 27B The measurement of the UE is on DMRS in PBCH and 2 A-RS contained in the current SSB.

[0262] In Figure 28 ​In the figure, the detectable range of the beam in the horizontal direction is divided into multiple parts, and different values of m are used to indicate the angle range, for example, m = 1, m = 2, and m = 5 shown in the figure. In addition, although not shown, the figure can also involve m = 3, m = 4, and other angle ranges. Similarly, the vertical direction can also be divided into multiple parts to represent multiple ranges of the ratio of the equivalent combined channel, for example, n is used to represent the range number. The number composed of m and n can be used to represent the narrow beam corresponding to the value of the corresponding detection direction angle range and the value of the ratio range of the equivalent combined channel.

[0263] Optionally, the values of m and n can be related to the narrow beam accuracy of the base station, the number of resources that the base station can configure for feeding back narrow beam information, and the coverage range of the base station.

[0264] The reported measurement value can be data obtained by quantizing the measurement value according to the quantization accuracy information of the reported measurement value in the related configuration information. The calculation form can be a formula or a lookup table. The quantization accuracy of the measurement value is related to the calculation accuracy of the beam, and further related to the number of distinguishable narrow beams included in the first beam. The narrower the beam width, the higher the quantization accuracy required.

[0265] The reported channel of the measurement result can be PUCCH, PUSCH, or PRACH.

[0266] If the measurement result is reported in PUCCH, the terminal needs to transmit the measurement result in the resource reserved in advance in UCI, or the base station sends DCI signaling to activate the measurement result reporting resource after sending the SSB, which is used to schedule the uplink resource required for reporting.

[0267] If the measurement result is reported in PUSCH, the terminal can report the measurement result in the uplink msg3 or after the initial access is completed.

[0268] If the measurement result is reported in PRACH, the terminal can report the measurement result when sending a random access request. The form of the measurement result can be explicit or implicit. For example, the terminal uses a dedicated preamble and / or a dedicated RO resource corresponding to the beam angle offset value to indicate the measurement result. The correspondence between the PRACH resource and the angle offset value can be notified in advance or stored in the storage unit of the terminal in advance. Alternatively, the calculation method of the measurement result related information is added to the preamble generation sequence, which is used for the base station to determine the measurement result.

[0269] The type of the measurement result reported by the terminal can be sent in the report config type. The form can be periodic, aperiodic, or semi-periodic.

[0270] 4. The terminal determines a beam index (codebook or codebook index) for communication with the base station based on the measurement of the SSB.

[0271] 5. The base station receives the measurement result reported by the terminal, determines and uses a corresponding narrow beam for communication with the terminal. The narrow beam is used as a transmission and / or reception beam for communication between the base station and the terminal.

[0272] Based on the measurement of the SSB containing the auxiliary RS, the beam management process can be completed before random access, and the narrow beam (corresponding codebook or codebook index) for communication between the terminal and the base station is determined without the beam management process based on the measurement and reporting of different direction CSI-RS. During the random access process, the terminal can use a high-gain beam for communication, improve the data transmission reliability of the terminal before RRC connection, and enhance the signal coverage during the random access process, especially for the terminal at the edge of the cell.

[0273] Embodiment One

[0274] When the terminal is connected to a base station supporting differential beam transmission function, the beam management process can be completed before entering the connected state (RRC connected) based on the reception and measurement of the new SSB of the present application, and a high-gain narrow beam is quickly determined and used for communication with the base station, thereby enhancing the reliability of the initial access stage. The content of the present application is exemplarily described below by taking related processes as examples.

[0275] One specific embodiment of the present embodiment can be as shown in Figure 13 In this embodiment, the steps related to the SSB of the terminal are as follows:

[0276] Step one: The terminal receives a first reference signal. The SSB in which the first reference signal is located carries PSS / SSS / PBCH.

[0277] Step two: The terminal measures the first reference signal.

[0278] Step three: The terminal determines the information carried in the SSB. The read information can be in the MIB of the SSB, which contains information related to the auxiliary RS, for determining whether the SSB contains the auxiliary RS for beam management and the related configuration information of the auxiliary RS.

[0279] Optionally, the present application does not limit the execution order of steps two and three. They can be performed simultaneously or in a certain order, including but not limited to the order of starting time and / or ending time.

[0280] Step four (optional): The terminal receives the second reference signal. The related indication information of the second reference signal can be obtained in step three. The beams for transmitting the second reference signal and the beams for transmitting the first reference signal are related and jointly form a set of differential beam pairs.

[0281] Step five (optional): The terminal performs measurement on the second reference signal based on the second reference signal related information in the SSB. If the information carried in the SSB indicates that the SSB contains at least one set of auxiliary RS groups transmitted by differential beam pairs, the terminal performs measurement on the auxiliary RS. The configuration information required for the measurement can be obtained from the SSB or stored in the storage module of the terminal in advance.

[0282] Among them, step four and step five are optional. Whether the terminal performs step four and / or step five is related to the type of SSB received by the terminal. If the SSB received by the terminal contains auxiliary RS, step four and / or step five need to be performed; if the SSB received by the terminal does not contain auxiliary RS, step four and / or step five do not need to be performed.

[0283] Step six: The terminal transmits message 1 (MSG1) carrying a random access request. The beam used by the base station to receive MSG1 is a wide beam associated with the SSB.

[0284] Step seven: The terminal attempts to receive the random access response information (RAR, MSG2) transmitted by the base station. The beam used by the base station to transmit MSG2 is a wide beam associated with the SSB.

[0285] Step eight: The terminal transmits MSG3 carrying the measurement results of the first reference signal and the second reference signal to the base station. The measurement results are used to determine the narrow beam (beam index, codebook) used by the terminal to communicate with the base station. The content of the measurement results reported can be: the channel estimation value of the first reference signal and the second reference signal respectively, or the correlation value of the measurement value of the first reference signal and the second reference signal, or the narrow beam related information determined by the terminal based on the measurement value of the first reference signal and the second reference signal. In this method, since MSG3 is transmitted in PUSCH (Physical Uplink Shared Channel), more bits of accurate measurement results can be transmitted, and the accuracy of the narrow beam determined based on the measurement results is higher.

[0286] Optionally, the correlation value obtained by the terminal based on the measurement values of the first reference signal and the second reference signal can be at least one of: a received signal ratio of at least one set of differential beam pairs received by the terminal, a frequency domain signal value of a plurality of beams included in the at least one set of differential beam pairs received by the terminal, a frequency domain signal value ratio of the at least one set of differential beam pairs received by the terminal, a frequency domain channel estimation value corresponding to the plurality of beams included in the at least one set of differential beam pairs received by the terminal, and a frequency domain channel estimation value ratio of the at least one set of differential beam pairs received by the terminal.

[0287] Optionally, the quantization accuracy of the reported measurement value or measurement value correlation value is related to the accuracy of the narrow beam. The quantization accuracy can be obtained from the configuration signaling of the base station (for example, MIB) or pre-stored in the storage unit of the terminal.

[0288] Optionally, the narrow beam related information determined by the terminal based on the measurement value of the differential beam can be an angle deviation value of the narrow beam direction from the normal direction of the differential beam pair, or a narrow beam index (codebook index). Wherein, the information of the narrow beam determined by the terminal based on the measurement result also needs the corresponding relationship between the measurement value angle deviation of the differential beam pair and the measurement signal value, and / or the corresponding relationship between the narrow beam index information and the angle deviation, etc. The information can be pre-stored in the terminal or obtained through other signaling sent by the base station (for example, information related to on-demand system information, such as on-demand SIB-DBF).

[0289] Step nine (optional): the base station determines the beam index information used for communication with the terminal based on the measurement result reported by the terminal. If the measurement result sent by the terminal is the direct channel estimation value of the terminal to the first reference signal and the second reference signal and / or the correlation value obtained by the terminal based on the measurement value of the first reference signal and the second reference signal and / or the angle deviation value of the narrow beam direction from the normal direction of the differential beam pair, the base station needs to process the data to determine the narrow beam used for communication with the terminal and the corresponding codebook information (codebook index). At this time, the terminal does not need to receive the related information for calculation, including but not limited to: the corresponding relationship between the measurement value of the differential beam pair and the angle deviation, the corresponding relationship between the index information of the narrow beam and the angle deviation, and the signaling overhead is reduced. Further, the base station can determine a more accurate narrow beam based on other information.

[0290] Step ten: the terminal receives the MSG4 sent by the base station. The base station sends the MSG4 using a narrow beam determined by the differential beam measurement related information reported by the terminal. Based on this method, the output transmission efficiency is increased, the transmission data reliability is higher, especially for the terminal at the edge of the cell, the improvement effect is obvious.

[0291] Embodiment two

[0292] In another embodiment, the terminal can report the measurement result of the SSB in MSG1. As follows Figure 14 Embodiment, the terminal performs the same steps as embodiment one, which will not be repeated, and the relevant steps different from embodiment one are as follows:

[0293] Step three (optional): the terminal determines the information carried in the SSB. In addition to containing the auxiliary RS related information, the SSB can also carry the related configuration information of MSG1. For example, at least one RO associated with the SSB, each RO corresponding to the relationship of the beam. Or, the reserved preamble (or preamble index) associated with the SSB, or the corresponding relationship between each preamble and the beam.

[0294] Optionally, if the base station cannot use multiple narrow beams to receive msg1 at the same time, the terminal can use different time ROs to associate with narrow beams.

[0295] Optionally, in order to be compatible with existing terminals that do not support DBF, the RO associated with the wide beam still needs to be reserved for the random access process of legacy UE. At this time, the RO of the terminal is divided into two groups. One group is associated with the wide beam, and the other group is associated with the narrow beam, as shown in Figure 29 The first sub-group is used for the connection of traditional UE and / or cell center UE and / or low latency demand UE, the configuration information and resource allocation mode of this sub-group remain the same as the existing 5G UE, and each RO corresponds to a different base station receiving wide beam. The second sub-group is used for coverage enhancement of cell edge UE, and its appearance is after the first sub-group. In the second RO sub-group, the ROs are distributed at different times according to the order of the wide beam (for example, the wide beam SSB0 related to the first sub-group) index associated with them. Each wide beam corresponds to multiple RO resources, and different time RO resources can be received by the base station using corresponding different narrow beams. Correspondingly, the last few RO resources in the second RO sub-group correspond to different SSB1~SSBn respectively. At this time, the narrow beams of the second sub-group realize the same angle coverage range as the wide beams of the first sub-group, but the distance coverage range is wider. For example Figure 29As shown, the same SSB0 corresponds to multiple RO resources in time domain, each of which corresponds to a different base station receiving narrow beam.

[0296] Optionally, the terminal can also receive a threshold information. The threshold information can be used to determine whether the terminal can use wide beam to perform random access. For example, when the terminal is located in the center of the cell, it is not necessary to use narrow beam to combat the path loss, at this time the terminal can use wide beam to send msg1 as soon as possible and complete random access.

[0297] Optionally, the threshold can be obtained in SSB. For example, obtained in SIB.

[0298] Optionally, the terminal can receive the configuration information of two groups of ROs, including the configuration information indicating the starting resource of RO and the information indicating the number of RO resources.

[0299] Optionally, in order to be compatible with existing terminals, the first RO subgroup corresponding to wide beam can be mapped first according to the method in existing NR, and then the second RO subgroup corresponding to narrow beam can be mapped.

[0300] Step six: the terminal sends MSG1 carrying measurement result information based on SSB related information, and requests random access. The measurement result indication information carried in MSG1 can be in implicit or explicit form. The content of the indication can be the quantized channel estimation value ratio, or the quantized angle offset value information of the narrow beam direction and the normal direction determined based on the measurement result, or the narrow beam index information determined based on the measurement result. The form used to indicate the narrow beam index in MSG1 can be a specific preamble sequence, a specific random access occasion (RO, RACH Occasion), a combination of a specific preamble sequence and a specific RO.

[0301] Optionally, if the indication of narrow beam index is in the form of specific RO, the terminal can determine the RO used to send MSG1 according to the correspondence between RO and beam index. At this time, in addition to the RO where the terminal receives the SSB, each SSB can also have multiple associated ROs, each of which is associated with a different base station receiving beam and is used to indicate the beam index determined by the terminal according to the measurement result. Figure 15As shown, the terminal receives SSB0 from the base station on RO1. Based on the information carried by SSB0, the type of service supported by the terminal (whether it supports differential beamforming), and the measurement results of the differential beam pair, the terminal determines the RO (RO5) to send MSG1. When the terminal is a traditional UE, it does not support differential beamforming and cannot perform beam management through SSB measurement. In this case, the terminal uses the same RO1 as the one used to receive SSB0 to send MSG1. When the terminal is a new type of UE, for example, if it supports differential beamforming, it can perform beam management based on the new SSB measurement results. In this case, the terminal selects an RO from RO2 to RO5 associated with receiving SSB0 to send MSG1 based on the measurement results of the new SSB. Each RO has an associated beam; RO1 corresponds to the traditional wide beam, and RO2 to RO5 correspond to narrow beams. The correspondence between ROs and narrow beams can be stored in advance in the terminal's storage unit or received through other signaling, such as SIB1.

[0302] Optionally, the terminal can also determine whether to select the first RO group or the second RO group based on a threshold. For example, for users in the cell center, access requirements can be met without a narrow beam, and the terminal can determine whether to use the first RO group based on the comparison result of the SSB's RSRP and the threshold. Optionally, the base station can use different narrow beams to receive MSG1 sent by the terminal. For example, narrow beam 1 is used to receive MSG1 when receiving RO2, enhancing the coverage of UEs at the cell edge.

[0303] Optionally, the time-frequency resource where the RO is located is related to the sub-angle number value determined by the terminal based on the measurement results of the reference signal. The terminal determines the ratio information based on the differential beam measurement results, then determines the corresponding sub-angle number according to a table to obtain the SSB RO number information. Finally, based on the SSB RO number information, the corresponding RO resource is determined.

[0304] Optional, such as Figure 30 As shown, the RO resources are arranged sequentially in the time domain, first by SSB number x, then by horizontal sub-angle number m, and then by vertical sub-angle number n. Different SSB numbers in the figure correspond to different narrow beams received by the base station and are distributed in different time domain resources for the base station to switch between different narrow beams for reception. SSB numbers that are the same in the frequency domain correspond to multiple available RO resources for the same narrow beam, which reduces terminal contention.

[0305] Optionally, in base station systems that do not support multi-panel or JPTA (joint phase and time array) functions, the ROs distributed on different frequency domain resources at the same time have the same SSB RO number, that is, they correspond to the same narrow beam.

[0306] Optionally, if the way of indicating the narrow beam index is a specific preamble sequence, the terminal needs to determine the preamble used for sending MSG1 according to the correspondence between the narrow beam and the preamble, combined with the measurement result of the SSB. At this time, at least one preamble is reserved for indicating the beam index reported by the terminal, and this part of the reserved preamble corresponds to the narrow beam index one by one. The correspondence between the preamble (or preamble index) and the narrow beam index can be stored in the storage unit of the terminal in advance, or sent to the terminal through other signaling, such as SIB1 and PDCCH.

[0307] Step seven: the terminal attempts to receive the random access response information (MSG2) sent by the base station. Wherein, the narrow beam used by the base station to send MSG2 is determined based on the information indicated in MSG1.

[0308] Step eight: the terminal sends MSG3 to the base station. The beam used by the base station to receive MSG3 can also be a narrow beam.

[0309] Step ten: the terminal receives MSG4 sent by the base station using a narrow beam.

[0310] Based on the method described in the embodiment, the reporting of the measurement result is in an implicit form, without occupying additional signaling overhead. And from MSG1 of the random access process, the base station can use the high-gain narrow beam for data transmission, which is more efficient.

[0311] Embodiment three

[0312] The new beam management method based on the SSB carrying the auxiliary RS can also be used in the related process of beam failure recovery (BFR). The terminal quickly determines the high-gain beam for communication with the base station in the new transmission environment through the reception and measurement of the SSB. Based on this method, without continuously sending other directional beams related to the transmission data direction and performing measurement and measurement result reporting in order to obtain the candidate beam, the related signaling overhead for beam failure recovery can be reduced.

[0313] Next, the method will be illustrated by the embodiment shown in the following Figure 16

[0314] ​Step 1: After the terminal successfully accesses the base station, the terminal receives the configuration signaling (BFRconfig) for beam recovery, which contains at least one of the following: a dedicated preamble for sending a beam recovery request on a PRACH channel, a BFR dedicated search space (recovery search space ID), a BFR timer, the type of random access (whether contention, two-step or four-step access), and a response time window (RA-responseWindow).

[0315] In this case, the dedicated preamble is not related to the new beam (or candidate beam) for beam recovery, but is only used by the base station to determine the purpose of the random access request sent by the terminal. For example, the number of this dedicated preamble can be 1. Therefore, this configuration information does not need to be updated according to the different beams used by the terminal to communicate with the base station or the case where the beam used by the terminal for transmission changes. In some cases, after the terminal successfully enters the connected state (RRC-connected), this configuration signaling only needs to be sent once and can still be applicable when the beam used by the terminal for communication with the base station changes, reducing signaling overhead.

[0316] Step 2: When the terminal detects beam failure, it receives, analyzes and measures the SSB carrying the first reference signal and the second reference signal.

[0317] Alternatively, the SSB is re-measured.

[0318] Step 3: The terminal obtains a candidate narrow beam in the new transmission environment based on the measurement results.

[0319] Optionally, the time sequence of measuring the first reference signal and the second reference signal and the sequence of beam failure detection can be performed simultaneously or sequentially with a time difference, including a start time and / or an end time.

[0320] Optionally, the terminal can perform channel estimation based on the measurement results, determine the SSB ROindex corresponding to the narrow beam, and determine the RO resource used for sending the PRACH signal based on the index, as shown in FIG. 32. In this case, the base station does not need to send specific configuration information of the narrow beam in the configuration information, but only needs to configure the relationship between the RO resource and the measurement results. As shown in FIG. 32, the interaction between the base station and the UE includes: Figure 32A

[0321] ​The base station sends BFR configuration to the UE. For example, the BFR configuration includes information related to the preamble index for the BFR request. The reserved preamble resources in the configuration information are not associated with the terminal's candidate beams, but are only used to indicate that the terminal has experienced a beam failure and requests beam failure recovery. In some cases, the number of reserved preambles included in the configuration information may be one.

[0322] The UE performs beam failure detection (BFD), whereby the terminal monitors the quality of the transmission channel to ensure efficient data transmission. For example, if the terminal measures that the RSRP of the existing data transmission beam is less than a specific threshold multiple times (or at least once) within a certain timer period, it considers that the terminal's communication quality needs to be improved by switching to a candidate beam.

[0323] After determining that a beam failure has occurred, the UE performs SSB measurement including auxiliary RS; the terminal re-determines the new narrow beam information that meets the communication quality requirements by measuring the new SSB.

[0324] The UE sends a BFR request to the base station, for example, via MSG1. The preamble used by the terminal to send msg1 is obtained from the BFR configuration information, and the RO resource used by the terminal to send msg1 is obtained through measurements of the new SSB. At this time, the terminal selects the RO resource corresponding to the new narrow beam in the second RO subgroup for sending msg1.

[0325] like Figure 32B As shown, the RO resource used to send msg1 is a new narrow beam determined by the terminal based on measurements of the SSB including A-RS. That is, the RO resource is associated with the terminal's new narrow beam. The terminal uses this method to report the measured narrow beam information.

[0326] In response to MSG1, the base station sends MSG2 to the UE. The narrow beam used by the base station to send msg2 can be the same as the narrow beam used to receive msg1, both being the same as the new narrow beam determined by the terminal based on the new SSB measurement results.

[0327] Step 4: Based on the new beam determined by measurement, the terminal selects the RO resource associated with the candidate beam and sends a preamble indicating a beam recovery request. The RO selection method is the same as described in Embodiment 2. Figure 15 The method shown is the same.

[0328] Step five: after sending the preamble, the terminal attempts to receive the base station's beam recovery request corresponding information (MSG2). If the terminal can successfully receive the response information MSG2 sent by the base station, the beam recovery is successful, and the terminal can continue data transmission. Wherein, the candidate narrow beam used by the base station to send MSG2 is determined by the RO in which the terminal sends the beam recovery request. If the terminal cannot successfully receive the response information MSG2 sent by the base station, the beam recovery is unsuccessful, and the terminal re-executes the random access related process.

[0329] In some embodiments, if the beam recovery parameter configured by the base station indicates that the random access used for beam recovery is a four-step random access, the candidate beam determined based on SSB measurement can be reported in MSG3. Figure 17 In the illustrated embodiment, when the terminal needs to perform beam failure recovery, the beam recovery request (beam failure recovery request) sent by the terminal is sent in the same RO as the received SSB, for example, without carrying candidate beam information.

[0330] The candidate beam obtained by the terminal based on measurement can be reported through MSG3, without reserving an RO dedicated to indicating the candidate beam in MSG1. The form of reporting the candidate beam can be beam index information or the angle offset value of the candidate beam and the normal direction of the SSB.

[0331] Alternatively, according to the method of the first reference embodiment, the terminal can directly report the measurement results of the SSB in MSG3, including but not limited to the channel estimation values of the first reference signal, the second reference signal, and the third reference signal, respectively. The measurement results reported in MSG3 are processed by the base station side to determine the candidate beam pair for communication between the terminal and the base station.

[0332] Embodiment four

[0333] In another embodiment, the terminal can report the measurement results of the SSB in MSG A. Wherein, msgA contains MsgA Preamble and msgA payload. If the terminal reports the measurement results in the PUSCH channel of MSG A, the specific method can refer to the method of the above-mentioned embodiment one; if the terminal reports the measurement results in the PRACH channel of MSG A, the specific method can refer to the method of the above-mentioned embodiment two. Alternatively, the terminal can transmit part of the results in the PUSCH channel and part of the results in the PUSCH channel.

[0334] The base station can determine the beam used for transmitting MSG B according to the information contained in MSG A. If the measurement result is contained in MSG A, the base station can use the narrow beam corresponding to the measurement result to transmit MSG B; if the measurement result is not contained in MSG A, the base station can use the wide beam corresponding to the SSB to transmit MSG B.

[0335] Embodiment Five

[0336] In some cases, if the terminal does not support the differential beamforming related function, even if the base station transmits the second reference signal through the SSB structure, the terminal cannot determine the narrow beam for its communication through the measurement of the second reference signal. Similarly, the candidate beam for beam recovery cannot be obtained through the measurement of at least one set of reference signals.

[0337] In this embodiment, if the terminal is not configured to periodically determine the candidate beam CSI-RS measurement, the candidate beam can be obtained through on-demand measurement. When the terminal detects beam failure, the terminal sends a measurement request signaling to the base station (on-demand measurement request). The signaling is used to request the base station for on-demand measurement for determining the candidate beam.

[0338] Optionally, the measurement is based on the measurement of a specific reference signal, which can be SSB, CSI-RS or SRS.

[0339] Optionally, the measurement request can be transmitted on the PUCCH channel. The terminal can reserve a bit of resources in advance in the UCI to send the measurement request signaling for indicating whether to request on-demand measurement. For example, "0" means not to request measurement, and "1" means to request measurement.

[0340] Optionally, the measurement request indication information in the UCI can be multiple bits (N bits, N > 1). The content transmitted in this UCI includes: whether to request measurement, and / or auxiliary measurement configuration information. For example, the auxiliary information can be the RSRP value of the beam measurement for the current connection, or the difference between the RSRP value of the beam measurement for the current connection and the RSRP value of the beam measurement when the beam management is completed. According to the relationship between the measurement value and the base station output beam pattern (as shown in Figure 18 , the current beam angle offset can be determined, the angle range of this measurement can be reduced, and the number of beams measured and the related measurement time and signaling overhead can be reduced.

[0341] Optionally, the reported auxiliary information can be quantized values, and the quantized bits are related to the width of the base station transmission beam, the beam pointing accuracy, the number of reported signaling bits, and the like. The quantization configuration information referred to by the terminal can be sent by the base station configuration signaling or stored in the terminal storage unit in advance.

[0342] Optionally, the measurement request can also be transmitted on the PRACH channel. The terminal uses a dedicated preamble to send a measurement request signaling indicating whether to request on-demand. The dedicated preamble can be obtained from the configuration signaling sent by the base station for beam recovery (for example, BFR config).

[0343] After sending the measurement request signaling, the terminal receives the measurement request response information of the base station. The response information can include measurement configuration signaling and / or measurement result reporting configuration signaling. The measurement configuration signaling includes at least one of the following: measurement resource type (CSI-RS, SSB, SRS), measurement resource type (periodic, semi-periodic, aperiodic), measurement resource configuration information (for example, density, time domain and / or frequency domain starting position, number of antenna ports, code division multiplexing type CDM (Code Division Multiplexing)), bandwidth information (BWP, Bandwidth Part), measurement content (RSRP, CRI, CQI (CQI-Channel Quality Indication), RI (rank indication), PMI (Precoding Matrix Indicator)). The measurement result reporting configuration signaling includes at least one of the following: measurement result reporting resource (MSG1, MSG3, UCI), measurement result reporting bit number, measurement result reporting quantization accuracy.

[0344] In addition, the terminal can also receive DCI trigger signaling for activating the reporting resource, and / or indicating the measurement time T1 and / or the measurement result reporting time.

[0345] If the measurement response information indicates measurement of CSI-RS, the terminal measures the multiple groups of downlink CSI-RS with different directions sent by the base station for determining candidate beams according to the received configuration signaling, and reports the measurement results according to the measurement result reporting configuration signaling.

[0346] If the measurement response information indicates measurement of SRS, the terminal sends multiple groups of SRS with the same direction to the base station according to the received configuration signaling, and the base station uses different direction beams for reception and measurement to determine the candidate beams.

[0347] The base station determines a new candidate beam according to the measurement result or the result reported by the terminal, and transmits the RAR using the candidate beam in response to the beam recovery request transmitted by the terminal.

[0348] Embodiment six

[0349] According to an embodiment of the present disclosure, a method performed by a terminal is provided, as shown in the following table, which includes at least some of steps S3101-S3109. Figure 31

[0350] Step S3101: The terminal performs SSB measurement and selection. For example, the terminal receives an SSB and obtains configuration information related to an auxiliary RS in the SSB, which includes at least one of the following: whether the SSB is an SSB indicating differential beamforming, resource information where the auxiliary RS is located, RO resource configuration information associated with the SSB, and threshold information for determining whether to select an RO group associated with a narrow beam.

[0351] Step S3102: The terminal determines whether the SSB has an auxiliary reference signal (A-RS), for example, the terminal determines whether the SSB supports DBF. If the SSB is not an SSB supporting DBF, the method includes step S3104: follow the traditional RO selection, and multiplex the existing NR related process.

[0352] If the SSB is an SSB supporting DBF, step S3103 is performed: determine whether the RSRP of the SSB is greater than a threshold, for example, compare the threshold with the SSB RSRP to determine whether access with a narrow beam is needed.

[0353] If the SSB RSRP is greater than the threshold, step S3105 is performed: RO selection is performed in the first sub-group, for example, access with a narrow beam is not needed.

[0354] If the SSB RSRP is less than the threshold, access with a narrow beam is possible, and steps S3106-S3109 are performed. The terminal performs SSB measurement and determines a narrow beam according to the SSB terminal configuration information.

[0355] The terminal determines the RO resource corresponding to the narrow beam according to the RO configuration information in the SSB, and transmits a random access request, for example, a preamble, using the resource.

[0356] S3106: Perform A-RS or SSB measurement;

[0357] Step S3107: Sub-angle index determination;

[0358] Step S3108: RO selection in the second sub-group;

[0359] ​Step S3109: Msg1 is sent.

[0360] Correspondingly, the signaling exchanged between the terminal and the base station is as shown in Figure 33

[0361] Referring to Figure 33 , the terminal receives a new SSB supporting the DBF function from the base station. The terminal measures the SSB, for example, performs measurement and decoding, and determines whether the SSB contains the auxiliary RS for determining the narrow beam. For example, receiving the SSB supporting the DFB and performing the SSB measurement can be performed once or multiple times, as shown in the figure.

[0362] If the SSB contains the auxiliary RS, the terminal measures the auxiliary RS (contained in the SSB); if not, receives the auxiliary RS (or the SSB containing the auxiliary RS) on the resource specified according to the indication information.

[0363] The terminal can perform sub-group selection. For example, the terminal determines whether it can use the narrow beam for random access, that is, whether it can select or use the second RO sub-group, based on the configuration information of the base station (for example, threshold information for judging whether it is a cell center user) or terminal capability information (whether it supports the DBF function). Optionally, the terminal can perform channel estimation.

[0364] If the terminal can use the second RO sub-group, the terminal determines the corresponding narrow beam based on the measurement result of the SSB, and selects the RO resource for sending the PRACH or msg1 in the second RO sub-group according to the association relationship information between the narrow beam and the RO, and uses the RO to send the PRACH. In this case, the base station uses the corresponding narrow beam to receive the msg1 on the corresponding RO.

[0365] Figure 19 A structural diagram of a user equipment 1900 according to at least one embodiment of the present disclosure is shown. Referring to Figure 19 , the user equipment 1900 includes a transceiver 1901 and a controller 1902. The transceiver 1901 is configured to send and receive data or signals. The controller 1902 is coupled to the transceiver 1901 and is configured to perform control to enable the user equipment 1900 to perform the method according to the embodiments of the present disclosure. In one implementation, the user equipment 1900 can further include a memory (not shown) having computer executable instructions stored thereon, and when the instructions are executed by the controller 1902, the user equipment 1900 can perform at least one method corresponding to the embodiments of the present disclosure.

[0366] Figure 20 A structural diagram of a network device 2000 according to at least one embodiment of the present disclosure is shown. Referring to Figure 20 ​The network device 2000 includes a transceiver 2001 and a controller 2002. The transceiver 2001 is configured to transmit and receive data or signals. The controller 2002 is coupled to the transceiver 2001 and configured to perform control so that the network device 2000 performs the methods according to the embodiments of the present disclosure. In an implementation, the network device 2000 can further include a memory (not shown) having computer-executable instructions stored thereon, and when the instructions are executed by the controller 2002, the network device 2000 can perform at least one method corresponding to the embodiments of the present disclosure.

[0367] The above only describes the example embodiments of the present application, and does not limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0368] Those skilled in the art can understand that the present application includes devices related to performing one or more of the operations described in the present application. These devices can be specially designed and manufactured for the desired purpose, or can also include known devices in a general-purpose computer. These devices have computer programs stored therein, which selectively activate or reconfigure. Such computer programs can be stored in a device (for example, a computer) readable medium or in any type of medium suitable for storing electronic instructions and respectively coupled to the bus, including but not limited to any type of disk (including floppy disks, hard disks, optical disks, CD-ROMs, and magneto-optical disks), ROM (Read-Only Memory), RAM (Random Access Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory, magnetic cards or optical cards. That is, the readable medium includes any medium that stores or transmits information in a form readable by a device (for example, a computer).

[0369] Those skilled in the art will appreciate that each of the structures and / or block diagrams and / or flow diagrams, and combinations of blocks in the structures and / or block diagrams and / or flow diagrams, can be implemented by computer program instructions. Those skilled in the art will also appreciate that computer program instructions can be loaded onto a general purpose computer, a special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, transform the machine into a particular machine implementing the functions specified in the structures and / or block diagrams and / or flow diagrams of the present application.

[0370] Those skilled in the art will appreciate that the steps, acts, measures, schemes in various operations, methods, procedures discussed in the present disclosure can be altered, changed, combined or deleted. Further, other steps, acts, measures, schemes in various operations, methods, procedures discussed in the present disclosure can also be altered, changed, rearranged, decomposed, combined or deleted. Further, steps, acts, measures, schemes in various operations, methods, procedures in the prior art can also be altered, changed, rearranged, decomposed, combined or deleted.

[0371] The above description is only some embodiments of the present application, and it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A method executed by a user equipment (UE) in a communication system, comprising: The UE receives a first broadcast signal, which includes a first reference signal and second information related to a second reference signal. The second reference signal is associated with the first reference signal, and the second information includes first indication information indicating whether the UE can receive the second reference signal through the broadcast signal. When the first indication information indicates that the UE can receive the second reference signal via a broadcast signal, the UE receives the second reference signal via the second broadcast signal according to the configuration information for the second reference signal. Report the first piece of information, which is related to the measurement of the first reference signal and the measurement of the second reference signal; Receive signals from the base station based on beams associated with the first information.

2. The method according to claim 1, wherein, The second information further includes at least one of the following: second indication information indicating that the second reference signal is used to determine the angle of the horizontal or vertical dimension; configuration information for the second reference signal; information related to the determination of the first information; and information related to the reporting of the first information. The information related to the determination of the first information includes at least one of the following: parameter information related to beam calculation, and information on the correspondence between the measurement results and the beam.

3. The method according to claim 2, wherein, The configuration information of the second reference signal includes at least one of the following: transmission period information of the second reference signal, location information of the time domain unit of the second reference signal, frequency domain resource distribution density information of the second reference signal, and transmission power related information of the second reference signal.

4. The method according to claim 3, wherein, The transmission power related information includes at least one of the following: the difference in transmission power relative to the first reference signal, and transmission power information of the second reference signal.

5. The method according to claim 3, wherein, If the configuration information of the second reference signal does not include the frequency domain resource distribution density information for the second reference signal, then the frequency domain resource distribution density of the second reference signal is the same as that of the first reference signal, or the frequency domain resource distribution density of the second reference signal is a pre-stored value.

6. The method according to claim 3, wherein, The frequency domain resource distribution density information for the second reference signal includes at least one of the following: information indicating that the frequency domain resource distribution density of the second reference signal is the same as that of the first reference signal, the frequency domain resource distribution density value of the second reference signal, and information related to the correlation between the frequency domain resource distribution density of the second reference signal and the frequency domain resource distribution density of the first reference signal.

7. The method according to claim 3, wherein, If the configuration information of the second reference signal does not include the transmission period information of the second reference signal, then the transmission period of the second reference signal is the same as the transmission period of the first reference signal, or the transmission period of the second reference signal is a pre-stored value.

8. The method according to claim 3, wherein, in, The transmission period information of the second reference signal includes at least one of the following: information indicating that the transmission period of the second reference signal is the same as the transmission period of the first reference signal, the transmission period of the second reference signal, and information related to the correlation between the transmission period of the second reference signal and the transmission period of the first reference signal.

9. The method according to claim 8, wherein, The second reference signal includes a plurality of second reference signals. The transmission periods of the plurality of second reference signals are different, or The multiple second reference signals have the same transmission period.

10. The method according to claim 9, wherein, The transmission period of at least one of the plurality of second reference signals is the same as the transmission period of the first reference signal, and / or the transmission period of the other second reference signals among the plurality of second reference signals is determined based on the transmission period of the first reference signal.

11. The method according to claim 3, wherein, Part of the information in the second information is obtained by using the sequence of synchronization signals in the received first broadcast signal.

12. The method according to claim 2, wherein, The information related to the reporting of the first information includes at least one of the following: Information indicating that the first message is sent via resources scheduled through DCI or reserved resources activated through DCI; The message instructs the transmission of the first information via PUSCH in message A of random access; Instructs that message A be sent through the random access resource corresponding to the first information; The message instructing the transmission of the first information via random access message 3, or Instructs the use of the random access resources corresponding to the first information to send the information of message 1.

13. The method according to claim 12, wherein, The random access resources include RO and / or preamble.

14. The method according to claim 12, wherein, Information relating the first information to the random access resources is obtained by receiving the second information or by information pre-stored by the UE.

15. The method according to any one of claims 1-14, wherein at least a portion of the second information is obtained via MIB and / or SIB.

16. The method according to any one of claims 1-15, wherein, Some of the information in the second set of information is pre-stored.

17. The method according to any one of claims 1-15, wherein, The first indication information is obtained through the MIB, and the other information in the second information is obtained through the SIB and / or pre-stored.

18. A method performed by a base station in a communication system, comprising: A first broadcast signal is transmitted, the first broadcast signal including a first reference signal and second information related to a second reference signal, the second reference signal being associated with the first reference signal, and the second information including indication information indicating whether the UE can receive a first indication information related to the second reference signal through the broadcast signal; When the first indication information indicates that the UE can receive the second reference signal via a broadcast signal, the second reference signal is transmitted via a second broadcast signal according to the configuration information for the second reference signal; Receive first information, which relates to the measurement of a first reference signal and the measurement of a second reference signal; The beam is determined based on the first information; Signals are transmitted based on the beam.

19. A user equipment (UE), the UE comprising: A transceiver is configured to transmit and / or receive signals; The controller is configured to control the UE to perform the method according to any one of claims 1-17.

20. A base station, the base station comprising: A transceiver is configured to transmit and / or receive signals; The controller is configured to control the UE to perform the method according to claim 18.

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