Information reporting method, information processing method, terminal device, and network device

Abstract

This application relates to an information reporting method, an information processing method, a terminal device, and a network device. The information reporting method includes: the terminal device reports antenna configuration, and the antenna configuration is used to indicate antenna gain-related parameters and / or the number of antennas of the terminal device. In the embodiments of this application, by reporting the antenna configuration of the terminal device, including the number of antennas and / or antenna gain-related parameters, it is possible to assist the network device in performing corresponding configurations or operations based on the characteristics of the terminal device, ensuring the normal operation of the terminal device.

Description

Technical Field

[0001] This application relates to the field of communications, and more specifically, to a method for reporting information, a method for processing information, a terminal device, and a network device. Background Art

[0002] With the continuous evolution and facilitation of wireless communication technologies, Internet of Things (IoT) technologies have developed rapidly. For example, the MTC (Machine-Type Communication) / eMTC (LTE enhanced MTC), NB-IoT (Narrow Band Internet of Things) series of standards promoted by the 3GPP (3rd Generation Partnership Project) organization have become candidate technical standards for 5G massive MTC technologies. These technical standards are expected to play a huge role in all aspects of people's production and life, such as smart homes, smart cities, smart factories, remote monitoring, and smart transportation. MTC / eMTC and NB-IoT terminals have technical advantages such as low cost, cheap price, support for ultra-low power consumption, and support for deep and wide coverage scenarios. Therefore, it is beneficial to the rapid popularization in the initial stage of the development of IoT technologies. However, these technologies also have some limitations in application scenarios. Since MTC / eMTC and NB-IoT support some applications with low data rates and relatively high transmission delays, they cannot be applied in some IoT scenarios that require relatively high rates, such as video surveillance in intelligent security and industrial applications with relatively low latency requirements. And if new radio (NR) terminals are directly adopted, due to the design indicators of NR terminals, such as transmission rate, transmission delay, etc., which far exceed the actual requirements of these scenarios, the cost is relatively high.

[0003] In order to improve the terminal system for the 5G massive MTC scenario, a type of NR MTC terminal that supports both medium transmission rates and medium latency requirements while having a relatively low cost can be designed. Currently, 3GPP refers to this type of NR MTC terminal as a RedCap (Reduced Capability NR Devices) terminal. Compared with normal NR terminals, RedCap terminals have some different characteristics, and the network cannot make decisions or configurations adaptively according to the characteristics of different terminals. Summary of the Invention

[0004] The embodiments of the present application provide an information reporting method, an information processing method, a terminal device, and a network device, which can assist the network device in making decisions or configurations by reporting the antenna configuration of the terminal device.

[0005] The embodiments of the present application provide an information reporting method, including: the terminal device reports an antenna configuration, and the antenna configuration is used to indicate the antenna gain related parameters and / or the number of antennas of the terminal device.

[0006] The embodiments of the present application provide an information processing method, including: the network device receives an antenna configuration, and the antenna configuration is used to indicate the antenna gain related parameters and / or the number of antennas of the terminal device.

[0007] The embodiments of the present application provide a terminal device, including: a reporting unit, configured to report an antenna configuration, and the antenna configuration is used to indicate the antenna gain related parameters and / or the number of antennas of the terminal device.

[0008] The embodiments of the present application provide a network device, including: a receiving unit, configured to receive an antenna configuration, and the antenna configuration is used to indicate the antenna gain related parameters and / or the number of antennas of the terminal device.

[0009] The embodiments of the present application provide a terminal device, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the above information reporting method.

[0010] The embodiments of the present application provide a network device, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the network device executes the above information processing method.

[0011] The embodiments of the present application provide a chip for implementing the above information reporting method or information processing method. Specifically, the chip includes: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the above information reporting method or information processing method.

[0012] The embodiments of the present application provide a computer-readable storage medium for storing a computer program, and when the computer program is run by a device, the device executes the above information reporting method or information processing method.

[0013] The embodiments of the present application provide a computer program product, including computer program instructions, and the computer program instructions cause a computer to execute the above information reporting method or information processing method.

[0014] An embodiment of the present application provides a computer program, which, when running on a computer, causes the computer to execute the above-mentioned information reporting method or information processing method.

[0015] In an embodiment of the present application, by reporting the antenna configuration of the terminal device, including the number of antennas and / or antenna gain-related parameters, it is possible to assist the network device to perform corresponding configurations or operations based on the characteristics of the terminal device, so as to ensure that the terminal device, such as a RedCap terminal, can work properly in the NR system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of an application scenario according to an embodiment of the present application.

[0017] Figure 2 is a schematic flowchart of an information reporting method according to an embodiment of the present application.

[0018] Figure 3 is a schematic flowchart of an information processing method according to an embodiment of the present application.

[0019] Figure 4 is a schematic block diagram of a terminal device according to an embodiment of the present application.

[0020] Figure 5 is a schematic block diagram of a terminal device according to another embodiment of the present application.

[0021] Figure 6 is a schematic block diagram of a network device according to an embodiment of the present application.

[0022] Figure 7 is a schematic block diagram of a network device according to another embodiment of the present application.

[0023] Figure 8 is a schematic block diagram of a communication device according to an embodiment of the present application.

[0024] Figure 9 is a schematic block diagram of a chip according to an embodiment of the present application.

[0025] Figure 10 is a schematic block diagram of a communication system according to an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present application will be described in conjunction with the accompanying drawings in the embodiments of the present application.

[0027] The technical solutions of the embodiments of this application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system, New Radio (NR) system, the evolved system of the NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), 5th-Generation (5G) communication system or other communication systems, etc.

[0028] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technologies, mobile communication systems will not only support traditional communications, but also support, for example, Device to Device (D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. The embodiments of this application can also be applied to these communication systems.

[0029] Optionally, the communication system in the embodiments of the present application can be applied to a Carrier Aggregation (CA) scenario, a Dual Connectivity (DC) scenario, or a Standalone (SA) networking scenario.

[0030] Optionally, the communication system in the embodiments of the present application can be applied to unlicensed spectrum, where the unlicensed spectrum can also be considered as shared spectrum; or the communication system in the embodiments of the present application can also be applied to licensed spectrum, where the licensed spectrum can also be considered as non-shared spectrum.

[0031] The embodiments of the present application describe various embodiments in combination with network devices and terminal devices, where the terminal device can also be referred to as a User Equipment (UE), access terminal, user unit, user station, mobile station, mobile unit, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device, etc.

[0032] The terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device, or other processing devices connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0033] In the embodiments of the present application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as on a ship, etc.); it can also be deployed in the air (such as on an airplane, balloon, satellite, etc.).

[0034] In the embodiments of the present application, the terminal device may be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, or a wireless terminal device in smart home, etc.

[0035] By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. A wearable device can also be referred to as a wearable intelligent device, which is a general term for devices developed by applying wearable technology to the intelligent design of daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is either directly worn on the body or integrated into the user's clothes or accessories. A wearable device is not just a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable intelligent devices include those with complete functions and large sizes that can achieve complete or partial functions without relying on a smartphone, such as smart watches or smart glasses, etc., and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones, such as various smart bracelets and smart jewelry for physical sign monitoring.

[0036] In the embodiments of the present application, the network device may be a device used to communicate with a mobile device. The network device may be an access point (AP) in a WLAN, a base transceiver station (BTS) in GSM or CDMA, or a base station (NodeB, NB) in WCDMA. It may also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a future evolved PLMN network, or a network device in an NTN network, etc.

[0037] By way of example and not limitation, in the embodiments of the present application, the network device may have mobility characteristics. For example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a High Elliptical Orbit (HEO) satellite, etc. Optionally, the network device may also be a base station located on land, water, etc.

[0038] In the embodiments of the present application, the network device may provide services for a cell. The terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or in other words, spectrum resources). The cell may be the cell corresponding to the network device (such as a base station). The cell may belong to a macro base station or a base station corresponding to a small cell. Here, the small cell may include: Metro cell, Micro cell, Pico cell, Femto cell, etc. These small cells have the characteristics of small coverage range and low transmission power, and are suitable for providing high-rate data transmission services.

[0039] Figure 1 Exemplarily, a communication system 100 is shown. The communication system includes a network device 110 and two terminal devices 120. Optionally, the communication system 100 may include multiple network devices 110, and the coverage range of each network device 110 may include other numbers of terminal devices 120. The embodiments of the present application do not limit this.

[0040] Optionally, the communication system 100 may further include other network entities such as a Mobility Management Entity (MME) and an Access and Mobility Management Function (AMF). This application embodiment does not limit this. Among them, the network device may further include an access network device and a core network device. That is, the wireless communication system further includes a plurality of core networks for communicating with the access network device. The access network device may be an evolved Node B (abbreviated as eNB or e-NodeB) macro base station, micro base station (also referred to as a "small base station"), pico base station, access point (AP), transmission point (TP), or new generation Node B (gNodeB) in a Long-Term Evolution (LTE) system, a Next Radio (NR) system, or an Authorized Auxiliary Access Long-Term Evolution (LAA-LTE) system, etc.

[0041] It should be understood that a device with communication functions in the network / system in the embodiments of this application may be referred to as a communication device. Taking Figure 1 the shown communication system as an example, the communication device may include a network device and a terminal device with communication functions. The network device and the terminal device may be specific devices in the embodiments of this application and will not be elaborated here; the communication device may also include other devices in the communication system, such as other network entities such as a network controller and a mobility management entity. This application embodiment does not limit this.

[0042] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is merely a description of the association relationship between associated objects, indicating that there can be three relationships. For example, A and / or B may indicate: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0043] It should be understood that the "indication" mentioned in the embodiments of this application may be a direct indication, an indirect indication, or may also represent an association relationship. For example, A indicates B, which may mean that A directly indicates B. For example, B can be obtained through A; it may also mean that A indirectly indicates B. For example, A indicates C, and B can be obtained through C; it may also mean that there is an association relationship between A and B.

[0044] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect corresponding relationship between two entities, or may indicate an associated relationship between them, or may be a relationship such as indication and being indicated, configuration and being configured, etc.

[0045] To facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the protection scope of the embodiments of the present application.

[0046] Currently, NR terminals need to support at least 2 receiving channels, and NR terminals on certain frequency bands need to support 4 receiving channels; each receiving channel includes components such as a receiving antenna, a filter, a PA (Power Amplifier), and an AD (Analog Digital) sampler. Therefore, reducing the number of radio frequency channels required for NR terminals can significantly reduce the terminal cost. Reducing a terminal with two radio frequency channels to one radio frequency channel can reduce the cost of the chip module by about 1 / 3. Therefore, RedCap terminals can be equipped with a smaller number of antennas to reduce the terminal cost. Similarly, methods to reduce the terminal cost also include reducing the bandwidth of the terminal, reducing the processing speed requirements of the terminal, etc.

[0047] The antenna gain loss of RedCap terminals is introduced below. The typical application scenario of RedCap terminals is smart wearable devices, such as smart watches. Limited by the volume of smart wearable devices, the antenna size of such terminals is usually smaller than that of traditional NR terminals. Therefore, the antenna gain of RedCap terminals will be lost compared to traditional NR terminals. Usually, the antenna loss of such RedCap terminals will be more than 3 dB.

[0048] Since RedCap terminals have some different characteristics from traditional NR terminals, different types of RedCap terminals may also have some different characteristics. The terminal in the embodiments of the present application can report the characteristics of the terminal, such as antenna configuration, to the network, so that the network can make scheduling decisions or resource configurations adaptively based on the characteristics of different terminals.

[0049] Figure 2 It is a schematic flowchart of an information reporting method 200 according to an embodiment of the present application. This method can optionally be applied to Figure 1 the system shown, but is not limited thereto. This method includes at least some of the following content.

[0050] S210: The terminal device reports an antenna configuration, and the antenna configuration is used to indicate antenna gain-related parameters and / or the number of antennas of the terminal device.

[0051] In this embodiment, there may be multiple types of terminals, such as normal NR terminals, RedCap terminals, etc. Different types of terminal devices may have different antenna gain-related parameters and / or antenna configurations such as the number of antennas. The terminal device reports the antenna configuration to the network device. After receiving the antenna configuration, the network device can decide whether to adjust the transmission performance based on this antenna configuration. For example, the number of receiving antennas supported by a RedCap terminal is less than that supported by an NR terminal, which will affect the reception performance of the downlink signal.

[0052] Optionally, in the embodiments of this application, the antenna gain-related parameters include at least one of the following:

[0053] Antenna gain;

[0054] Antenna gain loss;

[0055] Downlink antenna gain loss;

[0056] Uplink antenna gain loss.

[0057] Exemplarily, the antenna gain can be represented by the ratio of the maximum radiation intensity in a specified direction to the maximum radiation intensity of the antenna.

[0058] Optionally, in the embodiments of this application, when the terminal device reports the antenna configuration, it includes: the terminal device reports the antenna configuration by sending a preamble.

[0059] Specifically, a preamble can also be called a preamble code or a random access preamble code, which can be used to identify the identity of the terminal device during random access. When the terminal device sends a preamble to the network device, it can report the antenna configuration to the network device through the preamble.

[0060] Optionally, in the embodiments of this application, the method further includes at least one of the following:

[0061] The terminal device receives the correspondence between the preamble and the antenna configuration;

[0062] The terminal device receives the correspondence between the physical random access channel PRACH resources and the antenna configuration.

[0063] Exemplarily, the terminal device can receive the correspondence between the preamble and the antenna configuration from the network device, and then the terminal device searches for the corresponding preamble according to its own antenna configuration. For example, if the antenna configuration is 1 receiving antenna and an antenna gain of N dB, the corresponding preamble is preamble group 1. The terminal device can send this preamble group 1 to the network device.

[0064] Exemplarily, the terminal device may receive the correspondence between the PRACH resource and the antenna configuration from the network device, and then the terminal device may look up the corresponding PRACH resource pilot according to its own antenna configuration. For example, for an antenna gain of N dB in the antenna configuration, the corresponding PRACH resource is X. The terminal device may send to the network device that the preamble format corresponding to the PRACH resource X is 1-A.

[0065] Optionally, in the embodiments of the present application, the correspondence between the preamble and the antenna configuration includes at least one of the following:

[0066] The correspondence between the preamble group and the antenna configuration;

[0067] The correspondence between the preamble format and the antenna configuration.

[0068] Exemplarily, the preambles included in the PRACH resource may be grouped. For example, if the PRACH resource includes 48 preambles. Preambles 0-11 belong to preamble group 1, preambles 12-23 belong to preamble group 2, preambles 24-35 belong to preamble group 3, and preambles 36-48 belong to preamble group 4. The correspondence between the preamble group and the antenna configuration may include: preamble group 1 corresponds to 1 antenna with an antenna gain of 0 dB; preamble group 2 corresponds to an antenna gain of 3 dB, preamble group 2 corresponds to an antenna gain of 5 dB, preamble group 2 corresponds to 2 antennas with an antenna gain of 3 dB.

[0069] Exemplarily, there are multiple preamble formats, and the antenna configurations corresponding to different preamble formats may be set. For example: preamble format 1-A corresponds to 1 antenna with an antenna gain of 0 dB; preamble format 1-B corresponds to 2 antennas with an antenna gain of 3 dB.

[0070] Optionally, in the embodiments of the present application, different antenna configurations correspond to different preamble groups or preamble formats; or, different antenna configurations correspond to different PRACH resources.

[0071] Optionally, in the embodiments of the present application, different PRACH resources correspond to different preamble formats or different preamble repetition times. Therefore, after the terminal device determines the PRACH resource of the antenna configuration, it can determine the preamble format corresponding to the PRACH resource or different preamble repetition times.

[0072] Exemplarily, the preamble format corresponding to PRACH resource 1 is 1-A, and the preamble format corresponding to PRACH resource 2 is 1-B.

[0073] Exemplarily, the preamble repetition times corresponding to PRACH resource 3 is 6 times, and the preamble repetition times corresponding to PRACH resource 4 is 3 times.

[0074] Optionally, in an embodiment of the present application, the method further includes: the terminal device measures the downlink reference signal strength of the cell.

[0075] Optionally, in an embodiment of the present application, the method further includes: when the measured downlink reference signal strength of the cell is less than a first threshold, a preamble of a first format is selected.

[0076] Optionally, in an embodiment of the present application, the method further includes: when the downlink reference signal strength is greater than or equal to the first threshold, a preamble of a second format is selected, where the length of the preamble of the second format is less than the length of the preamble of the first format.

[0077] In one case, the terminal device can directly determine the selected preamble format according to the downlink reference signal strength and the threshold. For example, when the downlink reference signal strength is greater than the first threshold, the terminal device selects preamble format 1-A, and when the downlink reference signal strength is less than or equal to the first threshold, the terminal device selects preamble format 1-B.

[0078] In another case, the terminal device can combine the antenna configuration, the downlink reference signal strength, and the threshold to determine the selected preamble format. For example, for the same antenna configuration, there can be two corresponding preamble formats. When the downlink reference signal strength is greater than the first threshold, the terminal device selects preamble format 2-A, and when the downlink reference signal strength is less than or equal to the first threshold, the terminal device selects preamble format 2-B.

[0079] Optionally, in an embodiment of the present application, the method further includes: when the downlink reference signal strength is less than a second threshold, a first random access resource is selected.

[0080] Optionally, in an embodiment of the present application, the method further includes:

[0081] When the downlink reference signal strength is greater than or equal to the second threshold, a second random access resource is selected, where the number of preamble transmissions corresponding to the second random access resource is less than the number of preamble transmissions corresponding to the first random access resource.

[0082] In one case, the terminal device can directly determine the selected random access resource according to the downlink reference signal strength and the threshold. For example, when the downlink reference signal strength is greater than the second threshold, the terminal device selects the first random access resource 3-A, and when the downlink reference signal strength is less than or equal to the second threshold, the terminal device selects the first random access resource 3-B.

[0083] In another case, the terminal device can determine the selected random access resource by combining the antenna configuration, the downlink reference signal strength, and a threshold. For example, based on the same antenna configuration, the terminal device can correspond to two random access resources. When the downlink reference signal strength is greater than the second threshold, the first random access resource 4-A is selected; when the downlink reference signal strength is less than or equal to the second threshold, the second random access resource 4-B is selected.

[0084] Optionally, in the embodiments of the present application, the method further includes: the terminal device measures the downlink path loss (i.e., path loss).

[0085] Optionally, in the embodiments of the present application, the method further includes: when the downlink path loss is greater than the third threshold, the preamble of the third format is selected.

[0086] Optionally, in the embodiments of the present application, the method further includes: when the downlink path loss is less than or equal to the third threshold, the preamble of the fourth format is selected, where the length of the preamble of the fourth format is less than the length of the preamble of the third format.

[0087] In one case, the terminal device can directly determine the selected preamble format according to the downlink path loss and the threshold. For example, when the downlink path loss is greater than the third threshold, the terminal device selects the preamble format 5-A; when the downlink path loss is less than or equal to the third threshold, the terminal device selects the preamble format 5-B.

[0088] In another case, the terminal device can determine the selected preamble format by combining the antenna configuration, the downlink path loss, and the threshold. For example, based on the same antenna configuration, the terminal device can correspond to two preamble formats. When the downlink path loss is greater than the third threshold, the preamble format 6-A is selected; when the downlink path loss is less than or equal to the third threshold, the preamble format 6-B is selected.

[0089] Optionally, in the embodiments of the present application, the method further includes: when the downlink path loss is greater than the fourth threshold, the third random access resource is selected.

[0090] Optionally, in the embodiments of the present application, the method further includes: when the downlink path loss is less than or equal to the fourth threshold, the fourth random access resource is selected, where the number of transmissions of the fourth random access resource is less than the number of transmissions of the third random access resource.

[0091] In one case, the terminal device can directly determine the selected random access resource according to the downlink path loss and the threshold. For example, when the downlink path loss is greater than the fourth threshold, the terminal device selects the first random access resource 7-A; when the downlink path loss is less than or equal to the fourth threshold, the terminal device selects the first random access resource 7-B.

[0092] In another case, the terminal device can determine the selected random access resource by combining the antenna configuration, the downlink path loss, and the threshold. For example, based on the same antenna configuration, the terminal device can correspond to two random access resources. When the downlink path loss is greater than the fourth threshold, the third random access resource 8-A is selected. When the downlink path loss is less than or equal to the fourth threshold, the fourth random access resource 8-B is selected.

[0093] By reporting the antenna configuration of the terminal device, including the antenna number and / or antenna gain related parameters, the embodiments of the present application can assist the network device to perform corresponding configurations or operations based on the characteristics of the terminal device, so as to ensure that the terminal device, such as a RedCap terminal, can work properly in the NR system.

[0094] Figure 3 It is a schematic flowchart of an information processing method 300 according to an embodiment of the present application. Optionally, this method can be applied to Figure 1 the system shown, but is not limited thereto. This method includes at least some of the following content.

[0095] S310. The network device receives an antenna configuration, and the antenna configuration is used to indicate the antenna gain related parameters and / or the antenna number of the terminal device.

[0096] Optionally, in the embodiments of the present application, the antenna gain related parameters include at least one of the following:

[0097] Antenna gain;

[0098] Antenna gain loss;

[0099] Downlink antenna gain loss;

[0100] Uplink antenna gain loss.

[0101] Optionally, in the embodiments of the present application, the network device receives the antenna configuration, including:

[0102] The network device receives a preamble and obtains the antenna configuration of the terminal device corresponding to the preamble.

[0103] Optionally, in the embodiments of the present application, this method further includes at least one of the following:

[0104] The network device sends the correspondence between the preamble and the antenna configuration;

[0105] The network device sends the correspondence between the physical random access channel PRACH resource and the antenna configuration.

[0106] Optionally, in the embodiments of the present application, the correspondence between the preamble and the antenna configuration includes at least one of the following:

[0107] Correspondence between preamble groups and antenna configurations;

[0108] Correspondence between preamble formats and antenna configurations.

[0109] Optionally, in the embodiments of the present application, different antenna configurations correspond to different preamble groups or preamble formats.

[0110] Optionally, in the embodiments of the present application, different PRACH resources correspond to different preamble formats or different preamble repetition times.

[0111] Optionally, in the embodiments of the present application, the method further includes:

[0112] The network device sends at least one of a first threshold, a second threshold, a third threshold, and a fourth threshold;

[0113] Wherein, the first threshold is used to cause the terminal device to select a preamble of a first format when the downlink reference signal strength is less than the first threshold, and to select a preamble of a second format when the downlink reference signal strength is greater than or equal to the first threshold, wherein the length of the preamble of the second format is less than the length of the preamble of the first format;

[0114] The second threshold is used to cause the terminal device to select a first random access resource when the downlink reference signal strength is less than the second threshold, and to select a second random access resource when the downlink reference signal strength is greater than or equal to the second threshold, wherein the number of preamble transmissions corresponding to the second random access resource is less than the number of preamble transmissions corresponding to the first random access resource;

[0115] The third threshold is used to cause the terminal device to select a preamble of a third format when the downlink path loss is greater than the third threshold, and to select a preamble of a fourth format when the downlink path loss is less than or equal to the third threshold, wherein the length of the preamble of the fourth format is less than the length of the preamble of the third format;

[0116] The fourth threshold is used to cause the terminal device to select a third random access resource when the downlink path loss is greater than the fourth threshold, and to select a fourth random access resource when the downlink path loss is less than or equal to the fourth threshold, wherein the number of transmissions of the fourth random access resource is less than the number of transmissions of the third random access resource.

[0117] For a specific description of the method executed by the network device in this embodiment, reference can be made to the relevant description of the network device such as the base station in the above method 200. For the sake of brevity, it will not be elaborated here.

[0118] In an application example, a RedCap terminal can send a Preamble (preamble, or preamble code) to the network to report antenna configuration related parameters such as the antenna gain loss of the terminal and / or the number of antennas to the network.

[0119] Reduction or performance loss of the antenna configuration of the terminal will affect the performance of signal transmission related to the initial access process. For example, the number of receive antennas supported by the RedCap terminal is reduced from 2 receive antennas of the traditional terminal to 1 receive antenna. Since the RedCap terminal has less received power of one antenna during signal reception and loses the spatial diversity gain that may be obtained when receiving with 2 antennas, it will affect the reception performance of the downlink signal. For example, a loss of 3 dB will occur. Another example is that the loss of antenna gain caused by the reduction of the antenna size may also affect the transmission performance: on the one hand, it may affect the reception performance of the downlink signal, and on the other hand, it may also affect the transmission performance of the uplink signal. As shown in Table 1 below, several examples of possible loss situations of the transmission performance of the terminal are listed:

[0120] Table 1: Influence of Terminal Antenna Configuration on Transmission Performance

[0121]

[0122] As can be seen from Table 1, different antenna configurations of the terminal have different effects on uplink and downlink transmissions. For example, since the number of antennas of the wearable device is 1Rx (1 receive antenna) and there is a 3 dB antenna gain performance loss of the antenna, the downlink transmission performance loss will reach 6 dB (3 dB loss caused by 1Rx + 3 dB antenna gain loss), and the uplink transmission performance loss is 3 dB. Another example is that since the number of antennas of other RedCap terminals is 1Rx but there is no antenna gain performance loss of the antenna, the corresponding downlink transmission performance loss reaches 3 dB (3 dB loss caused by 1Rx), and the uplink transmission performance loss is 0 dB.

[0123] To handle the influence of different antenna configurations of the terminal on uplink or downlink transmissions, the network usually needs some compensatory measures, such as compensating for the aforementioned transmission performance losses by reducing the transmission code rate, increasing the transmission power, increasing the transmission duration, etc. If the network knows the specific antenna parameters of the terminal: the number of receive antennas, antenna gain (or antenna gain loss), etc., the network can implement appropriate compensatory measures for the transmission of the terminal. For example, taking the wearable device in Table 1 as an example, since the number of antennas is 1Rx, the antenna gain is 3 dB, the downlink transmission performance loss is 6 dB, and the uplink transmission performance loss is 3 dB, the transmission power can be increased by 3 dB to reduce the transmission performance loss.

[0124] During the initial access process, the network and the terminal need to communicate in both the uplink and downlink directions. Therefore, the earlier the network obtains the antenna configuration of the terminal, the better, which is more conducive to the stable and reliable completion of the random access process of the terminal.

[0125] The terminal can report the antenna configuration of the terminal to the network in the following ways:

[0126] 1) Report to the network through the preamble

[0127] For example, different preamble groups correspond to terminals with different antenna configurations. For example, corresponding to the 4 types of terminals in Table 1, the preamble can be divided into 4 groups, and each preamble group corresponds to one type of terminal. When each type of terminal initiates random access, it only selects the preamble of the preamble group corresponding to this type of terminal. For example, randomly select one from the multiple preambles included in the preamble group corresponding to this type of terminal.

[0128] Again, different preamble formats correspond to terminals with different antenna configurations. For example, in order to distinguish between the terminals with antenna gain loss and those without antenna gain loss in Table 1, different preamble formats can be configured for distinction. Specifically, for example, for the terminals without antenna gain loss, a preamble format matching the cell radius can be configured; while for the terminals with antenna performance loss, a longer preamble format can be configured, thereby improving the transmission performance of the preamble to compensate for the impact of antenna gain loss.

[0129] 2) Report to the network through the PRACH resource

[0130] Different PRACH resources can correspond to terminals with different antenna configurations. For example, corresponding to the 4 types of terminals in Table 1, 4 sets of different PRACH resources can be configured, and each set of PRACH resources corresponds to one type of terminal. When each type of terminal initiates random access, it only selects the preamble in the PRACH resource corresponding to this type of terminal.

[0131] Optionally, different PRACH resources can correspond to different preamble formats. For example, for the terminals without antenna gain loss, a preamble format matching the cell radius can be configured; while for the terminals with antenna performance loss, a longer preamble format can be configured, thereby improving the transmission performance of the preamble to compensate for the impact of antenna gain loss.

[0132] Optionally, corresponding to different PRACH resources, different preamble repetition times can be configured for different terminals. For example, for the preamble transmission of the terminals without antenna gain loss, there is no repetition or a small amount of repetition; while for the terminals with antenna performance loss, a repeated or a larger number of repetitions can be configured, thereby improving the transmission performance of the preamble to compensate for the impact of antenna gain loss.

[0133] The following introduces the manner in which the terminal selects preamble or PRACH resources:

[0134] For uplink transmission, the performance loss of the antenna gain of the UE at the cell edge is more serious. This is because, for the UE in the cell center, its uplink transmission power is set based on the downlink path loss. The downlink path loss measured by the terminal with antenna gain loss is also relatively large, so its transmitted uplink power will naturally be relatively large, thus compensating for the impact of antenna gain loss. However, for the UE at the cell edge, its uplink transmission power has reached the maximum transmission power of the UE, so it cannot further increase the transmission power, and thus the performance of the edge UE will be lost.

[0135] To address this issue, adaptive enhancement can be performed for edge UEs. For example, when the measured downlink reference signal strength of the cell by the terminal is greater than a certain specific threshold, the terminal selects normal preamble or PRACH resources for transmission. Another example is that when the measured downlink reference signal strength of the cell by the terminal is less than a certain specific threshold, the terminal selects a corresponding longer preamble format or a PRACH resource with more transmission times to send the preamble.

[0136] The UE determines the transmission power P of the physical random access channel (PRACH) based on the DL-RS on the active UL (Uplink) BWP (Bandwidth Part) b of the carrier f in the serving cell c PRACH,b,f,c (i) for serving cell c in the transmission occasion i. See the following formula:

[0137] P PRACHb,,f,c (i) = min{P CMAX,f,c (i), P PRACHt,arget,f,c + PL b,f,c} [The unit can be dBm],

[0138] where P CMAX,f,c (i) can be the maximum output power configured for the UE of the carrier f in the serving cell c within the transmission occasion i; P PRACH,target,f,c is the PRACH target received power PREAMBLE_RECEIVED_TARGET_POWER provided by the upper layer for the active UL BWP b of the carrier f in the serving cell c; PL b,f,cis based on the DL RS (Reference Signal) carrier f associated with the PRACH transmission on the activated DL (Downlink) BWP of serving cell c, and the path loss of the activated UL-BWPb, and is calculated by the UE in dB as the reference signal power - that is, the higher layer filtered RSRP (Reference Signal Receiving Power) in dBm. If the activated DL-BWP is the initial DL-BWP, and for the SS / PBCH (Synchronization Signal / Physical Broadcast Channel) block and core set multiplexing mode 2 or 3, the UE determines the PL based on the SS / PBCH block associated with the PRACH transmission b,f,c 。

[0139] In the information reporting method of this embodiment, the RedCap terminal can report the antenna configuration of the terminal, including the number of antennas and / or antenna gain loss, etc., so that the network can perform corresponding configurations or operations based on the characteristics of the terminal, thereby ensuring that the RedCap terminal can work properly in the NR system.

[0140] Figure 4 is a schematic block diagram of a terminal device 400 according to an embodiment of the present application. The terminal device 400 may include:

[0141] A reporting unit 401, configured to report an antenna configuration, where the antenna configuration is used to indicate antenna gain related parameters and / or the number of antennas of the terminal device.

[0142] Optionally, in the embodiment of the present application, the antenna gain related parameters include at least one of the following:

[0143] Antenna gain;

[0144] Antenna gain loss;

[0145] Downlink antenna gain loss;

[0146] Uplink antenna gain loss.

[0147] Optionally, in the embodiment of the present application, the reporting unit 401 reports the antenna configuration by sending a preamble.

[0148] As Figure 5 shown, optionally, in the embodiment of the present application, the terminal device 400 further includes at least one of the following:

[0149] A first receiving unit 402, configured to receive the correspondence between the preamble and the antenna configuration;

[0150] A second receiving unit 403, configured to receive the correspondence between physical random access channel (PRACH) resources and antenna configurations.

[0151] Optionally, in the embodiments of the present application, the correspondence between preambles and antenna configurations includes at least one of the following:

[0152] The correspondence between preamble groups and antenna configurations;

[0153] The correspondence between preamble formats and antenna configurations.

[0154] Optionally, in the embodiments of the present application, different antenna configurations correspond to different preamble groups or preamble formats; or, different antenna configurations correspond to different PRACH resources.

[0155] Optionally, in the embodiments of the present application, different PRACH resources correspond to different preamble formats or different preamble repetition times.

[0156] Optionally, in the embodiments of the present application, the terminal device 400 further includes: a first measurement unit 404, configured to measure the downlink reference signal strength of the cell.

[0157] Optionally, in the embodiments of the present application, the terminal device 400 further includes: a first selection unit 405, configured to select a preamble of a first format when the measured downlink reference signal strength is less than a first threshold.

[0158] Optionally, in the embodiments of the present application, the first selection unit 404 is further configured to select a preamble of a second format when the measured downlink reference signal strength is greater than or equal to the first threshold, where the length of the preamble of the second format is less than the length of the preamble of the first format.

[0159] Optionally, in the embodiments of the present application, the terminal device 400 further includes: a second selection unit 407, configured to select a first random access resource when the measured downlink reference signal strength is less than a second threshold.

[0160] Optionally, in the embodiments of the present application, the second selection unit 407 is further configured to select a second random access resource when the measured downlink reference signal strength is greater than or equal to the second threshold, where the number of preamble transmissions corresponding to the second random access resource is less than the number of preamble transmissions corresponding to the first random access resource.

[0161] Optionally, in the embodiments of the present application, the terminal device 400 further includes: a second measurement unit 408, configured to measure the downlink path loss.

[0162] Optionally, in the embodiment of the present application, the terminal device 400 further includes: a third selection unit 409, configured to select a preamble of a third format when the measured downlink path loss is greater than a third threshold.

[0163] Optionally, in the embodiment of the present application, the third selection unit 409 is further configured to select a preamble of a fourth format when the measured downlink path loss is less than or equal to the third threshold, where the length of the preamble of the fourth format is less than the length of the preamble of the third format.

[0164] Optionally, in the embodiment of the present application, the terminal device 400 further includes: a fourth selection unit 411, configured to select a third random access resource when the measured downlink path loss is greater than a fourth threshold.

[0165] Optionally, in the embodiment of the present application, the fourth selection unit 411 is further configured to select a fourth random access resource when the measured downlink path loss is less than or equal to the fourth threshold, where the number of transmissions of the fourth random access resource is less than the number of transmissions of the third random access resource.

[0166] The terminal device 400 in the embodiment of the present application can implement the corresponding functions of the terminal device in the foregoing method embodiment. For the corresponding processes, functions, implementation manners, and beneficial effects of each module (sub-module, unit, or component, etc.) in the terminal device 400, reference may be made to the corresponding descriptions in the foregoing method embodiment, which will not be elaborated herein. It should be noted that the functions described for each module (sub-module, unit, or component, etc.) in the terminal device 400 of the application embodiment can be implemented by different modules (sub-modules, units, or components, etc.), or can be implemented by the same module (sub-module, unit, or component, etc.).

[0167] Figure 6 It is a schematic block diagram of a network device 500 according to an embodiment of the present application. The network device 500 may include:

[0168] a receiving unit 501, configured to receive an antenna configuration, where the antenna configuration is used to indicate antenna gain-related parameters and / or the number of antennas of the terminal device.

[0169] Optionally, in the embodiment of the present application, the antenna gain-related parameters include at least one of the following:

[0170] Antenna gain;

[0171] Antenna gain loss;

[0172] Downlink antenna gain loss;

[0173] Uplink antenna gain loss.

[0174] Optionally, in the embodiments of the present application, the receiving unit 501 is configured to receive a preamble and obtain the antenna configuration of the terminal device corresponding to the preamble.

[0175] Optionally, in the embodiments of the present application, as Figure 7 shown, the network device 500 further includes at least one of the following:

[0176] A first sending unit 502, configured to send the correspondence between the preamble and the antenna configuration;

[0177] A second sending unit 503, configured to send the correspondence between the physical random access channel PRACH resource and the antenna configuration.

[0178] Optionally, in the embodiments of the present application, the correspondence between the preamble and the antenna configuration includes at least one of the following:

[0179] The correspondence between the preamble group and the antenna configuration;

[0180] The correspondence between the preamble format and the antenna configuration.

[0181] Optionally, in the embodiments of the present application, different antenna configurations correspond to different preamble groups or preamble formats; or, different antenna configurations correspond to different PRACH resources.

[0182] Optionally, in the embodiments of the present application, different PRACH resources correspond to different preamble formats or different preamble repetition times.

[0183] Optionally, in the embodiments of the present application, the network device 500 further includes:

[0184] A third sending unit 504, configured to send at least one of a first threshold, a second threshold, a third threshold, and a fourth threshold;

[0185] Wherein, the first threshold is used to cause the terminal device to select a preamble of a first format when the downlink reference signal strength is less than the first threshold, and select a preamble of a second format when the downlink reference signal strength is greater than or equal to the first threshold, wherein the length of the preamble of the second format is less than the length of the preamble of the first format;

[0186] The second threshold is used to cause the terminal device to select a first random access resource when the downlink reference signal strength is less than the second threshold, and select a second random access resource when the downlink reference signal strength is greater than or equal to the second threshold, wherein the number of preamble transmissions corresponding to the second random access resource is less than the number of preamble transmissions corresponding to the first random access resource;

[0187] The third threshold is used to enable the terminal device to select a preamble of the third format when the downlink path loss is greater than the third threshold, and to select a preamble of the fourth format when the downlink path loss is less than or equal to the third threshold, where the length of the preamble of the fourth format is less than the length of the preamble of the third format;

[0188] The fourth threshold is used to enable the terminal device to select a third random access resource when the downlink path loss is greater than the fourth threshold, and to select a fourth random access resource when the downlink path loss is less than or equal to the fourth threshold, where the number of transmissions of the fourth random access resource is less than the number of transmissions of the third random access resource.

[0189] The network device 500 in the embodiments of the present application can implement the corresponding functions of the network device in the foregoing method embodiments. For the corresponding processes, functions, implementation manners, and beneficial effects of each module (sub-module, unit, or component, etc.) in the network device 500, reference may be made to the corresponding descriptions in the foregoing method embodiments, and details are not described herein again. It should be noted that the functions described for each module (sub-module, unit, or component, etc.) in the network device 500 in the embodiments of the application may be implemented by different modules (sub-modules, units, or components, etc.), or may be implemented by the same module (sub-module, unit, or component, etc.).

[0190] Figure 8 FIG. 10 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application. The communication device 600 includes a processor 610, and the processor 610 can call and run a computer program from a memory to enable the communication device 600 to implement the method in the embodiments of the present application.

[0191] Optionally, as Figure 8 shown, the communication device 600 may further include a memory 620. Among them, the processor 610 can call and run a computer program from the memory 620 to enable the communication device 600 to implement the method in the embodiments of the present application.

[0192] Among them, the memory 620 may be an independent device separate from the processor 610, or may be integrated in the processor 610.

[0193] Optionally, as Figure 8 shown, the communication device 600 may further include a transceiver 630. The processor 610 can control the transceiver 630 to communicate with other devices. Specifically, the processor 610 can send information or data to other devices, or receive information or data sent by other devices.

[0194] Among them, the transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of antennas may be one or more.

[0195] Optionally, the communication device 600 may be the network device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of brevity, details are not described herein again.

[0196] Optionally, the communication device 600 may be the terminal device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the terminal device in the various methods of the embodiment of the present application. For the sake of brevity, details are not described herein again.

[0197] Figure 9 It is a schematic structural diagram of a chip 700 according to an embodiment of the present application. The chip 700 includes a processor 710. The processor 710 may call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0198] Optionally, as Figure 9 shown, the chip 700 may further include a memory 720. Among them, the processor 710 may call and run a computer program from the memory 720 to implement the method executed by the terminal device or the network device in the embodiment of the present application.

[0199] Among them, the memory 720 may be a separate device independent of the processor 710 or may be integrated in the processor 710.

[0200] Optionally, the chip 700 may further include an input interface 730. Among them, the processor 710 may control the input interface 730 to communicate with other devices or chips. Specifically, it may obtain information or data sent by other devices or chips.

[0201] Optionally, the chip 700 may further include an output interface 740. Among them, the processor 710 may control the output interface 740 to communicate with other devices or chips. Specifically, it may output information or data to other devices or chips.

[0202] Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of brevity, details are not described herein again.

[0203] Optionally, the chip may be applied to the terminal device in the embodiment of the present application, and the chip may implement the corresponding processes implemented by the terminal device in the various methods of the embodiment of the present application. For the sake of brevity, details are not described herein again.

[0204] The chips applied to the network device and the terminal device may be the same chip or different chips.

[0205] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip, etc.

[0206] The above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or other programmable logic devices, transistor logic devices, discrete hardware components, etc. Among them, the above-mentioned general-purpose processor may be a microprocessor or any conventional processor, etc.

[0207] The above-mentioned memory may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM).

[0208] It should be understood that the above memory is for illustrative but not restrictive purposes. For example, the memory in the embodiments of the present application may also be a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous DRAM (SDRAM), a double data rate SDRAM (DDR SDRAM), an enhanced SDRAM (ESDRAM), a synch link DRAM (SLDRAM), and a direct rambus RAM (DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memories.

[0209] Figure 10FIG. 800 is a schematic block diagram of a communication system 800 according to an embodiment of the present application. The communication system 800 includes a terminal device 810 and a network device 820.

[0210] The terminal device 810 reports an antenna configuration, which is used to indicate antenna gain-related parameters and / or the number of antennas of the terminal device 810.

[0211] The network device 820 receives the antenna configuration, which is used to indicate antenna gain-related parameters and / or the number of antennas of the terminal device 810.

[0212] Among them, the terminal device 810 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 820 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, details are not described herein again.

[0213] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from a website, computer, server, or data center to another website, computer, server, or data center in a wired manner (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer, or a data storage device such as a server or data center that includes one or more integrated available media. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a Solid State Disk (SSD)), etc.

[0214] It should be understood that in various embodiments of the present application, the magnitudes of the sequence numbers of the above processes do not mean the order of execution, and the order of execution of each process should be determined according to its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0215] Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.

[0216] The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily conceive of changes or substitutions within the technical scope disclosed by the present application, and all should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An information reporting method, comprising: The terminal device receives the correspondence between the preamble format and the antenna configuration from the network device, where different antenna configurations correspond to different preamble formats; And The terminal device reports the corresponding antenna configuration to the network device by sending a preamble of the corresponding format, where the antenna configuration is used to indicate the antenna gain loss of the terminal device, so that the network device correspondingly increases the transmission power to make up for the antenna gain loss.

2. The method according to claim 1, wherein The method further comprises: The terminal device selects a preamble of the first format when the measured downlink reference signal strength of the cell is less than the first threshold.

3. The method according to claim 2, wherein, The method further comprises: When the downlink reference signal strength is greater than or equal to the first threshold, a preamble of the second format is selected, where the length of the preamble of the second format is less than the length of the preamble of the first format.

4. The method according to claim 1, wherein, The method further comprises: The terminal device selects a first random access resource when the measured downlink reference signal strength of the cell is less than the second threshold.

5. The method according to claim 4, wherein, The method further comprises: When the downlink reference signal strength is greater than or equal to the second threshold, a second random access resource is selected, where the number of preamble transmissions corresponding to the second random access resource is less than the number of preamble transmissions corresponding to the first random access resource.

6. The method according to any one of claims 1 to 5, wherein The method further comprises: The terminal device selects a preamble of the third format when the measured downlink path loss is greater than the third threshold.

7. The method according to claim 6, wherein, The method further comprises: When the downlink path loss is less than or equal to the third threshold, a preamble of the fourth format is selected, where the length of the preamble of the fourth format is less than the length of the preamble of the third format.

8. The method according to any one of claims 1 to 5, wherein, The method further comprises: when the measured downlink path loss of the terminal device is greater than the fourth threshold, a third random access resource is selected.

9. The method according to claim 8, wherein The method further comprises: When the downlink path loss is less than or equal to the fourth threshold, a fourth random access resource is selected, where the number of transmissions of the fourth random access resource is less than the number of transmissions of the third random access resource.

10. An information processing method, wherein, Comprising: The network device sends the correspondence between the preamble format and the antenna configuration to the terminal device, where different antenna configurations correspond to different preamble formats; The network device receives a preamble of the corresponding format from the terminal device, obtains the corresponding antenna configuration, where the antenna configuration is used to indicate the antenna gain loss of the terminal device, so that the network device correspondingly increases the transmission power to make up for the antenna gain loss.

11. The method according to claim 10, wherein, The method further comprises: The network device sends at least one of the first threshold, the second threshold, the third threshold, and the fourth threshold; Wherein, the first threshold is used to enable the terminal device to select a preamble of the first format when the downlink reference signal strength is less than the first threshold, and to select a preamble of the second format when the downlink reference signal strength is greater than or equal to the first threshold, where the length of the preamble of the second format is less than the length of the preamble of the first format; The second threshold is used to enable the terminal device to select a first random access resource when the downlink reference signal strength is less than the second threshold, and to select a second random access resource when the downlink reference signal strength is greater than or equal to the second threshold, where the number of preamble transmissions corresponding to the second random access resource is less than the number of preamble transmissions corresponding to the first random access resource; The third threshold is used to enable the terminal device to select a preamble of a third format when the downlink path loss is greater than the third threshold, and to select a preamble of a fourth format when the downlink path loss is less than or equal to the third threshold, where the length of the preamble of the fourth format is less than the length of the preamble of the third format; The fourth threshold is used to enable the terminal device to select a third random access resource when the downlink path loss is greater than the fourth threshold, and to select a fourth random access resource when the downlink path loss is less than or equal to the fourth threshold, where the number of transmissions of the fourth random access resource is less than the number of transmissions of the third random access resource.

12. A terminal device, comprising: a receiving unit, configured to receive the correspondence between the preamble format and the antenna configuration from a network device, where different antenna configurations correspond to different preamble formats; and a reporting unit, configured to report the antenna configuration to the network device by transmitting a preamble of a corresponding format, where the antenna configuration is used to indicate the antenna gain loss of the terminal device, so that the network device increases the transmission power accordingly to compensate for the antenna gain loss.

13. The terminal device according to claim 12, wherein, The terminal device further comprises: a first selection unit, configured to select a preamble of a first format when the measured downlink reference signal strength of the cell is less than a first threshold.

14. The terminal device according to claim 13, wherein, The first selection unit is further configured to select a preamble of a second format when the downlink reference signal strength is greater than or equal to the first threshold, where the length of the preamble of the second format is less than the length of the preamble of the first format.

15. The terminal device according to claim 12, wherein, The terminal device further comprises: a second selection unit, configured to select a first random access resource when the measured downlink reference signal strength is less than a second threshold.

16. The terminal device according to claim 15, wherein, The second selection unit is further configured to select a second random access resource when the downlink reference signal strength is greater than or equal to the second threshold, where the number of preamble transmissions corresponding to the second random access resource is less than the number of preamble transmissions corresponding to the first random access resource.

17. The terminal device according to any one of claims 12 to 16, wherein, The terminal device further comprises: a third selection unit, configured to select a preamble of a third format when the measured downlink path loss is greater than a third threshold.

18. The terminal device according to claim 17, wherein, The third selection unit is further configured to select a preamble of a fourth format when the downlink path loss is less than or equal to the third threshold, where the length of the preamble of the fourth format is less than the length of the preamble of the third format.

19. The terminal device according to any one of claims 12 to 16, wherein, The terminal device further comprises: a fourth selection unit, configured to select a third random access resource when the measured downlink path loss is greater than a fourth threshold.

20. The terminal device according to claim 19, wherein, The fourth selection unit is further configured to select a fourth random access resource when the downlink path loss is less than or equal to a fourth threshold, where the number of transmissions of the fourth random access resource is less than the number of transmissions of the third random access resource.

21. A network device, comprising: a sending unit, configured to send a correspondence between a preamble format and an antenna configuration to a terminal device, where different antenna configurations correspond to different preamble formats; a receiving unit, configured to receive a preamble of a corresponding format from the terminal device, and obtain a corresponding antenna configuration, where the antenna configuration is used to indicate an antenna gain loss of the terminal device, so that the network device correspondingly increases a transmission power to compensate for the antenna gain loss.

22. The network device according to claim 21, wherein, The network device further includes: a third sending unit, configured to send at least one of a first threshold, a second threshold, a third threshold, and a fourth threshold; wherein the first threshold is used to cause the terminal device to select a preamble of a first format when the downlink reference signal strength is less than the first threshold, and select a preamble of a second format when the downlink reference signal strength is greater than or equal to the first threshold, where the length of the preamble of the second format is less than the length of the preamble of the first format; the second threshold is used to cause the terminal device to select a first random access resource when the downlink reference signal strength is less than the second threshold, and select a second random access resource when the downlink reference signal strength is greater than or equal to the second threshold, where the number of preamble transmissions corresponding to the second random access resource is less than the number of preamble transmissions corresponding to the first random access resource; the third threshold is used to cause the terminal device to select a preamble of a third format when the downlink path loss is greater than the third threshold, and select a preamble of a fourth format when the downlink path loss is less than or equal to the third threshold, where the length of the preamble of the fourth format is less than the length of the preamble of the third format; the fourth threshold is used to cause the terminal device to select a third random access resource when the downlink path loss is greater than the fourth threshold, and select a fourth random access resource when the downlink path loss is less than or equal to the fourth threshold, where the number of transmissions of the fourth random access resource is less than the number of transmissions of the third random access resource.

23. A terminal device, comprising: a processor and a memory, where the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the method according to any one of claims 1 to 9.

24. A network device, comprising: a processor and a memory, where the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the network device executes the method according to claim 10 or 11.

25. A chip, comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 9.

26. A chip, comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to claim 10 or 11.

27. A computer-readable storage medium for storing a computer program, which, when run on a device, causes the device to perform the method according to any one of claims 1 to 9.

28. A computer-readable storage medium for storing a computer program, which, when run on a device, causes the device to perform the method according to claim 10 or 11.

29. A computer program product comprising computer program instructions that cause a computer to perform the method according to any one of claims 1 to 9.

30. A computer program product comprising computer program instructions that cause a computer to perform the method according to claim 10 or 11.

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