Communication method, communication device, communication system, storage medium, and program product

Abstract

The present disclosure relates to a communication method, a communication device, a communication system, a storage medium, and a program product. The communication method comprises: receiving first information sent by a network device, wherein the first information is used for determining a first path loss value corresponding to a random access process. By means of the embodiments of the present disclosure, the communication efficiency can be improved.

Description

Communication methods, communication equipment, communication systems, storage media and software products Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to communication methods, communication devices, communication systems, storage media, and program products. Background Technology

[0002] Path loss (PL), also known as propagation loss, refers to the loss that occurs when radio waves propagate through space. It is caused by the radiation and diffusion of transmitted power and the propagation properties of the channel, and reflects the variation in the average power of the received signal over a macroscopic range.

[0003] In asymmetric uplink and downlink communication scenarios, network devices can be configured to have a greater number of Transmission Reception Points (TRPs) for uplink (UL) transmission than for downlink (DL) transmission.

[0004] Summary of the Invention

[0005] Determining the path loss value used in the random access procedure is a problem that needs to be solved.

[0006] This disclosure provides communication methods, communication devices, communication systems, storage media, and program products.

[0007] According to a first aspect of the present disclosure, a communication method is proposed, executed by a terminal, comprising: receiving first information sent by a network device, the first information being used to determine a first path loss value corresponding to a random access procedure.

[0008] According to a second aspect of the present disclosure, a communication method is provided, executed by a network device, comprising: sending first information to a terminal, the first information being used to determine a first path loss value corresponding to a random access procedure.

[0009] According to a third aspect of the present disclosure, a communication device is provided for performing the communication method of any of the above aspects.

[0010] According to a fourth aspect of the present disclosure, a communication system is provided, including a terminal and a network device, wherein the terminal is configured to implement the communication method of the first aspect, and the network device is configured to implement the communication method of the second aspect.

[0011] According to a fifth aspect of the present disclosure, a storage medium is provided that stores instructions which, when executed on a communication device, cause the communication device to perform the method of the first aspect or the second aspect.

[0012] According to a sixth aspect of the present disclosure, a program product is provided, comprising at least one of a program and instructions, wherein when the program and instructions are executed by a communication device, the computer program implements the method of the first aspect or the second aspect.

[0013] Through the embodiments of this disclosure, the network device sends first information to the terminal, and the terminal can determine the first path loss value corresponding to the random access process based on the first information, thereby improving the efficiency of random access. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0015] Figure 1A is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

[0016] Figure 1B is a schematic diagram of an asymmetric uplink and downlink communication scenario according to an embodiment of the present disclosure.

[0017] Figure 2 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure.

[0018] Figure 3 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure.

[0019] Figure 4A is a schematic diagram of the structure of the terminal proposed in an embodiment of this disclosure.

[0020] Figure 4B is a schematic diagram of the structure of the network device proposed in an embodiment of this disclosure.

[0021] Figure 5A is a schematic diagram of the structure of the communication device proposed in an embodiment of this disclosure.

[0022] Figure 5B is a schematic diagram of the chip structure proposed in an embodiment of this disclosure. Detailed Implementation

[0023] This disclosure provides communication methods, communication devices, communication systems, storage media, and program products.

[0024] In a first aspect, embodiments of this disclosure propose a communication method executed by a terminal, comprising: receiving first information sent by a network device, wherein the first information is used to determine a first path loss value corresponding to a random access procedure.

[0025] In the above embodiments, the network device sends first information to the terminal, and the terminal can determine the first path loss value corresponding to the random access process based on the first information, which can improve the efficiency of random access.

[0026] In conjunction with some embodiments of the first aspect, in some embodiments, the first information includes a road loss offset value.

[0027] In conjunction with some embodiments of the first aspect, in some embodiments, the first path loss value is determined based on the path loss offset value and the second path loss value, the second path loss value being measured based on the first reference signal.

[0028] In conjunction with some embodiments of the first aspect, in some embodiments, the first information further includes at least one of the following: the identifier of the first reference signal; and the cell information corresponding to the first reference signal.

[0029] In conjunction with some embodiments of the first aspect, in some embodiments, the first information further includes indication information for indicating whether the road loss offset value is used.

[0030] In conjunction with some embodiments of the first aspect, in some embodiments, the first information further includes an identifier of a first beam, the first beam corresponding to a first reference signal and / or the path loss offset value.

[0031] In some embodiments, in conjunction with the first aspect, the method further includes: receiving a threshold value sent by the network device, the threshold value corresponding to the first information.

[0032] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes: measuring a first reference signal to obtain a first measurement value; determining a second measurement value based on the first measurement value and a first path loss value, or based on the first measurement value and a path loss offset value; and determining to perform random access in response to the second measurement value being greater than a threshold value.

[0033] In conjunction with some embodiments of the first aspect, in some embodiments, the first information corresponds to a first transmission receiving node, and the random access procedure is used to access the first transmission receiving node, which is a transmission receiving node dedicated to uplink transmission.

[0034] Secondly, embodiments of this disclosure propose a communication method executed by a network device, comprising: sending first information to a terminal, the first information being used to determine a first path loss value corresponding to a random access procedure.

[0035] In conjunction with some embodiments of the second aspect, in some embodiments, the first information includes a road loss offset value.

[0036] In conjunction with some embodiments of the second aspect, in some embodiments, the first path loss value is determined based on the path loss offset value and the second path loss value, the second path loss value being measured based on the first reference signal.

[0037] In conjunction with some embodiments of the second aspect, in some embodiments, the first information further includes at least one of the following: the identifier of the first reference signal; and the cell information corresponding to the first reference signal.

[0038] In conjunction with some embodiments of the second aspect, in some embodiments, the first information further includes indication information for indicating whether the road loss offset value is used.

[0039] In conjunction with some embodiments of the second aspect, in some embodiments, the first information further includes an identifier of a first beam, the first beam corresponding to a first reference signal and / or the path loss offset value.

[0040] In some embodiments, in conjunction with the second aspect, the method further includes: sending a threshold value to the terminal, the threshold value corresponding to the first information.

[0041] Thirdly, embodiments of this disclosure provide a communication device for performing the communication method described in any of the above aspects.

[0042] Fourthly, embodiments of this disclosure provide a communication system including a terminal and a network device, wherein the terminal is configured to implement the communication method of the first aspect, and the network device is configured to implement the communication method of the second aspect.

[0043] Fifthly, embodiments of this disclosure provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the method of the first aspect or the second aspect.

[0044] In a sixth aspect, embodiments of this disclosure provide a program product comprising at least one of a program and instructions, wherein when the program and instructions are executed by a communication device, the computer program implements the method of the first aspect or the second aspect.

[0045] In a seventh aspect, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform any of the communication methods described above.

[0046] It is understood that the aforementioned communication devices, communication systems, storage media, program products, etc., are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0047] This disclosure provides communication methods, communication devices, terminals, and storage media. In some embodiments, the terms communication method, information processing method, information sending method, and information receiving method can be used interchangeably.

[0048] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments. In all embodiments of this disclosure, unless otherwise specified or logically conflicting, the terminology and / or descriptions between the embodiments are consistent and can be mutually referenced. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0049] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0050] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0051] In the embodiments disclosed herein, "multiple" refers to two or more.

[0052] In some embodiments, the terms “at least one of A or B, at least one of A and B”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0053] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of whether there is a branch B); in some embodiments, B (execute B regardless of whether there is a branch A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, both A and B are executed. The same applies when there are more branches such as A, B, C, etc.

[0054] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execute A regardless of whether a branch B exists); in some embodiments, B (execute B regardless of whether a branch A exists); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, and C.

[0055] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0056] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0057] In some embodiments, terms such as "time / frequency" and "time-frequency domain" refer to the time domain and / or frequency domain.

[0058] In some embodiments, terms such as “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “when…”, “if…”, etc. can be used interchangeably. These descriptions all refer to the device making a corresponding action under certain objective circumstances. They do not necessarily limit the time, nor do they require the device to make a judgment action when implementing it, nor do they mean that there must be other limitations.

[0059] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0060] In some embodiments, devices, etc., may be interpreted as physical or virtual, and their names are not limited to those described in the embodiments. Terms such as “device,” “equipment,” “circuit,” “network element,” “network function,” “network device,” “function,” “node,” “unit,” “section,” “system,” “network,” “chip,” “chip system,” “entity,” and “subject” are interchangeable.

[0061] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).

[0062] In some embodiments, the terms "access network device (AN device)," "radio access network device (RAN device)," "base station (BS)," "radio base station," "fixed station," "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," and "bandwidth part (BWP)" can be used interchangeably.

[0063] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", "subscriber station", "mobile unit", "subscriber unit", "wireless unit", "remote unit", "mobile device", "wireless device", "wireless communication device", "remote device", "mobile subscriber station", "access terminal", "mobile terminal", "wireless terminal", "remote terminal", "handset", "user agent", "mobile client", and "client" can be used interchangeably.

[0064] In some embodiments, access network devices, core network devices, or network devices can be replaced by terminals. For example, embodiments of this disclosure can also be applied to structures where communication between access network devices, core network devices, or network devices and terminals is replaced by communication between multiple terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the structure can also be configured such that the terminal has all or part of the functions of the access network device. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "sidelink"). For example, uplink channel, downlink channel, etc., can be replaced with sidelink channel, and uplink link, downlink, etc., can be replaced with sidelink link.

[0065] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, core network device, or network device may also be configured to have all or some of the functions of the terminal.

[0066] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0067] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0068] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0069] Figure 1A is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

[0070] As shown in Figure 1A, the communication system 100 includes a terminal 101 and a network device 102.

[0071] In some embodiments, terminal 101 includes, for example, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home, but is not limited thereto.

[0072] In some embodiments, network device 102 may include at least one of access network device and core network device.

[0073] In some embodiments, the access network device is, for example, a node or device that connects a terminal to a wireless network. The access network device may include, but is not limited to, at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), radio backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system.

[0074] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0075] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0076] In some embodiments, a core network device may be a single device comprising one or more network elements, or it may be multiple devices or a group of devices, each comprising all or part of the aforementioned one or more network elements. Network elements may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), or a Next Generation Core (NGC).

[0077] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0078] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1A, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1A are illustrative. The communication system may include all or some of the main bodies in FIG1A, or it may include other main bodies outside of FIG1A. The number and form of each main body are arbitrary. Each main body may be physical or virtual. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0079] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), 6th generation mobile communication system (6G), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other communication methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0080] Figure 1B is a schematic diagram of an asymmetric uplink and downlink communication scenario according to an embodiment of the present disclosure.

[0081] As shown in Figure 1B, the network side can be configured such that the number of Transmission Reception Points (TRPs) for uplink (UL) transmissions is greater than the number of nodes for downlink (DL) transmissions. Specifically, TRP-1 is a transmission point used for both uplink and downlink transmissions, while TRP-2 is a dedicated uplink transmission point, meaning it does not perform downlink transmissions. TRP-2 can also be referred to as a Reception Point (RP).

[0082] Due to requirements such as uplink power control, for nodes without downlink transmission (e.g., TRP-2), the network side can configure the downlink path loss reference of another transmission node (e.g., TRP-1) for the uplink transmission of the terminal TRP-2.

[0083] Since the transmission distance of the terminal is different in different TRPs, the actual downlink transmission path loss (pathloss_TRP_2) corresponding to the uplink transmission of the terminal in TRP-2 needs to be compensated according to the downlink transmission path loss (pathloss_TRP_1) in TRP-1. That is, pathloss_TRP_2 = pathloss_TRP_1 + pathloss_offset. The downlink transmission path loss of TRP-1 can be obtained based on the terminal measurement. Here, pathloss_offset is the path loss offset value, which can be a positive number, a negative number, or "0".

[0084] The network device can send the path loss offset value to the terminal via Radio Resource Control (RRC) messages and update it via Medium Access Control Element (MAC CE) or Downlink Control Information (DCI).

[0085] Figure 2 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure.

[0086] As shown in Figure 2, this disclosure relates to a communication method, which includes:

[0087] Step S2101: The network device sends the first information to the terminal.

[0088] In some embodiments, the terminal receives first information sent by the network device.

[0089] In some embodiments, the first information is used to determine the first path loss value corresponding to the random access procedure.

[0090] In some embodiments, the first path loss value may be a target path loss value; for a TRP used for uplink and downlink transmission, the first path loss value may be a path loss value measured from a path loss reference signal; for a TRP used only for uplink transmission, the first path loss value is a path loss value after compensation of the path loss value measured from the path loss reference signal.

[0091] In some embodiments, the first information includes at least one of the following:

[0092] The first reference signal is used for road loss measurement.

[0093] Cell information corresponding to the first reference signal;

[0094] Road loss offset information;

[0095] The identifier (or spatial relationship identifier) ​​of the first beam corresponding to the first reference signal or path loss offset information.

[0096] The first reference signal can also be called the road loss reference signal.

[0097] The cell information may include at least one of the following: cell identifier (e.g., physical cell identifier (PCI) or serving cell identifier (e.g., serving_cell_1)); cell group identifier (e.g., master cell group (MCG) or secondary cell group (SCG)); and bandwidth part (BWP) identifier.

[0098] The road loss offset information includes at least one of the following: indication information on whether the road loss offset value is used; and the road loss offset value. The information on whether the road loss offset value is used can be represented by 1 bit. For example, a 1-bit value of "0" indicates that the road loss offset value is not used, and a 1-bit value indicates that the road loss offset value is used. The road loss offset value can be, for example, 2dB, or other values, which are not limited in this disclosure.

[0099] In some embodiments, the first information further includes indication information for indicating whether to use the road loss offset value.

[0100] In some embodiments, after receiving the indication information, the terminal determines whether to use the road loss offset value based on the indication information.

[0101] In some embodiments, the first information further includes an identifier of a first beam, which corresponds to a first reference signal and / or a path loss offset value.

[0102] The beam identifier may include at least one of the following: Transmission Configuration Indicator (TCI) state identifier; synchronization signal block (SSB) identifier; Channel State Information Reference Signal (CSI-RS) identifier; and Sounding Reference Signal (SRS) identifier.

[0103] In some embodiments, the first information includes a road loss offset value.

[0104] In some embodiments, the road loss offset value may also be referred to as the road loss offset amount.

[0105] In some embodiments, the road loss offset value can be a positive number, a negative number, or 0.

[0106] In some embodiments, the path loss offset value can correspond to a beam, and the beam can correspond to a TRP. Different beams can correspond to different path loss offset values, that is, different TRPs can correspond to different path loss offset values.

[0107] In some embodiments, the road loss offset value can correspond to the TRP, and different TRPs can correspond to different road loss offset values.

[0108] In some embodiments, the first path loss value is determined based on the path loss offset value and the second path loss value, and the second path loss value is obtained based on the measurement of the first reference signal.

[0109] In some embodiments, the terminal can measure the first reference signal to obtain a second path loss value, which can be used as a reference path loss value; the terminal can determine a first path loss value based on the second path loss value and the path loss offset value. For example, the sum of the second path loss value and the path loss offset value is the first path loss value. Another example is that the difference between the second path loss value and the path loss offset value is the first path loss value.

[0110] In some embodiments, the first information corresponds to the first transmission receiving node, and the random access procedure is used to access the first transmission receiving node, which is a transmission receiving node dedicated to uplink transmission.

[0111] In some embodiments, the first information may correspond to the first beam, the first beam may correspond to the first TRP, and the terminal may determine the first path loss value based on the path loss offset value included in the first information. The first path loss value is used for the random access procedure of accessing the first TRP using the first beam.

[0112] In some embodiments, the first TRP is dedicated to uplink transmission, meaning it does not perform downlink transmission. Therefore, the terminal cannot measure the downlink path loss value of the first TRP, and thus cannot compensate for the uplink transmission of the first TRP based on the measured downlink path loss value. The network device sends first information corresponding to the first TRP to the terminal. The terminal can measure the first reference signal in the first information to obtain a second path loss value, which can be the downlink path loss value of the second TRP. The second TRP can be a TRP used for both uplink and downlink transmission. The terminal can obtain a first path loss value based on the second path loss value and the path loss offset, and compensate for the uplink transmission of the first TRP based on the first path loss value.

[0113] In step S2102, the terminal determines the first path loss value based on the first information.

[0114] In some embodiments, the terminal may determine the first reference signal based on the identifier of the first reference signal included in the first information, measure the first reference signal, and determine the second path loss value based on the transmission power and reception power of the first reference signal. The second path loss value may be used as a reference path loss value, and the second path loss value may be equal to the difference between the transmission power and reception power of the first reference signal.

[0115] In some embodiments, the terminal may determine the first path loss value based on the second path loss value and the path loss offset value information included in the first information.

[0116] For example, if the path loss offset information includes an indication that the path loss offset value is not used, the terminal can determine the second path loss value as the first path loss value, meaning that the random access procedure corresponding to this first information does not need to perform path loss compensation.

[0117] For example, if the path loss offset information includes indication information indicating the use of a path loss offset value and specifying a particular path loss offset value, then the terminal can determine the first path loss value based on the second path loss value and the path loss offset value. That is, the random access procedure corresponding to this first information needs to perform path loss compensation.

[0118] In some embodiments, the first path loss value is used to compensate the uplink signal transmission power when the terminal performs a random access procedure. For example, the first beam corresponding to the first path loss value is TCI-state-1. When the terminal uses TCI-state-1 to perform a random access procedure, or when the terminal uses the reference signal (e.g., SSB) corresponding to TCI-state-1 to perform a random access procedure, the terminal compensates the uplink signal transmission power based on the first path loss value.

[0119] In step S2103, the network device sends a threshold value to the terminal.

[0120] In some embodiments, the terminal receives a threshold value sent by the network device.

[0121] In some embodiments, the threshold value corresponds to the first information.

[0122] In some embodiments, the threshold value is used by the terminal to perform a random access procedure, and the threshold value may be a random access selection threshold value.

[0123] In some embodiments, the threshold value may include at least one of the following:

[0124] The reference signal received power threshold (RSRP-ThresholdSSB) for the synchronization signal block;

[0125] The reference signal receive power threshold (RSRP-ThresholdCSI-RS) of the channel state information reference signal;

[0126] Reference signal reception power threshold (MsgA-RSRP-ThresholdSSB) for synchronization signal block during random access;

[0127] Reference signal receive power threshold (RSRP-ThresholdSSB-SUL) for auxiliary uplink synchronization signal block;

[0128] Random Access Reference Signal Received Power Threshold (MsgA-RSRP-Threshold);

[0129] The RSRP threshold used to select Msg1 for repeated transmission is 2 (RSRP-ThresholdMsg1-RepetitionNum2);

[0130] The RSRP threshold used to select Msg1 for repeated transmission is 4 (RSRP-ThresholdMsg1-RepetitionNum4).

[0131] The RSRP threshold used to select Msg1 for repeated transmission is 8 (RSRP-ThresholdMsg1-RepetitionNum8).

[0132] The RSRP threshold (RSRP ThresholdMsg3) is used to select the retransmission of Msg3.

[0133] In some embodiments, the network device may configure threshold values ​​for terminals.

[0134] In some embodiments, the network device may be configured with multiple sets of first information and threshold values ​​corresponding to each set of first information.

[0135] In some embodiments, when a network device performs a random access procedure using specific first information, the terminal performs the random access procedure using a threshold value corresponding to the first information.

[0136] In step S2104, the terminal measures the first reference signal to obtain the first measurement value.

[0137] In some embodiments, the first measured value may be, for example, the Reference Signal Received Power (RSRP) value.

[0138] In some embodiments, the terminal may determine the first reference signal based on the identifier of the first reference signal included in the first information, and measure the first reference signal to obtain a first measurement value of the first reference signal.

[0139] In step S2105, the terminal determines the second measurement value based on the first measurement value.

[0140] In some embodiments, the terminal determines a second measurement value based on a first measurement value and a first path loss value.

[0141] In some embodiments, the terminal determines a second measurement value based on a first measurement value and a road loss offset value.

[0142] For example, the terminal measures the path loss reference signal to obtain a path loss value-1, where path loss value-1 = transmit power - receive power, and path loss value-2 = path loss value-1 + path loss offset. Path loss value-1 is used for uplink transmission of TCI-state-1, and the terminal compensates for uplink signal transmission power based on path loss value-1. Path loss value-2 is used for uplink transmission of TCI-state-2, and the terminal compensates for uplink signal transmission power based on path loss value-2.

[0143] For example, the terminal obtains the RSRP value by measuring the path loss reference signal. When the terminal uses TCI-state-1 (or the reference signal corresponding to TCI-state-1) for a random access procedure, the RSRP value -1 corresponding to TCI-state-1 is the RSRP value obtained by the terminal by measuring the path loss reference signal. When the terminal uses TCI-state-2 (or the reference signal corresponding to TCI-state-2) for a random access procedure, the RSRP value -2 corresponding to TCI-state-2 is the sum of RSRP value -1 and the path loss offset, or, RSRP value -2 is the difference between RSRP value -1 and the path loss offset.

[0144] For example, the terminal measures the path loss reference signal to obtain a path loss value-1, where path loss value-1 = transmit power - receive power, and path loss value-2 = path loss value-1 + path loss offset. Path loss value-1 is used for uplink transmission of beam-1, and the terminal compensates for uplink signal transmission power based on path loss value-1. Path loss value-2 is used for uplink transmission of beam-2, and the terminal compensates for uplink signal transmission power based on path loss value-2.

[0145] Step S2106: In response to the second measurement value being greater than the threshold value, determine to proceed with random access.

[0146] In some embodiments, the terminal compares a second measurement value with a threshold value. If the second measurement value is greater than the threshold value, it determines to perform random access; if the second measurement value is less than or equal to the threshold value, it determines not to perform random access.

[0147] In some embodiments, the terminal triggers a random access procedure and executes the random access procedure based on the first information corresponding to the random access procedure and the threshold value corresponding to the first information.

[0148] For example, if the indication information included in the first information indicates the use of a path loss offset, then the terminal obtains a second measurement value based on the first measurement value (e.g., the RSRP measurement value of the path loss reference signal) and the path loss offset, compares the second measurement value with a threshold value, and thus performs the corresponding random access selection.

[0149] For example, for a random access procedure that indicates the use of a path loss offset, the corresponding RSRP value is calculated based on the RSRP measured by the path loss reference signal and the path loss offset. For example, the RSRP value used for a random access procedure is equal to the sum of the RSRP measured by the path loss reference signal and the path loss offset, or the RSRP value used for a random access procedure is equal to the difference between the RSRP measured by the path loss reference signal and the path loss offset.

[0150] For example, for a specific beam that indicates the use of a path loss offset, the corresponding RSRP value for that specific beam is calculated based on the RSRP measured by the path loss reference signal and the path loss offset. For example, the RSRP value for a specific beam is equal to the sum of the RSRP measured by the path loss reference signal and the path loss offset, or the RSRP value for a specific beam is equal to the difference between the RSRP measured by the path loss reference signal and the path loss offset.

[0151] In some embodiments, the threshold value is of type RSRP-ThresholdMsg1-RepetitionNum2. If the RSRP measurement value obtained by the terminal is less than the threshold value, the terminal determines that Msg1 of the random access procedure adopts the repeated transmission method and the number of repeated transmissions is 2, and initiates the random access procedure using the random access resource corresponding to the repeated transmission method of Msg1.

[0152] In some embodiments, the threshold value is of type RSRP-ThresholdMsg1-RepetitionNum4. If the RSRP measurement value of the terminal is less than the threshold value, the terminal determines that Msg1 of the random access procedure adopts the repeated transmission method and the number of repeated transmissions is 4, and initiates the random access procedure using the random access resource corresponding to the repeated transmission method of Msg1.

[0153] In some embodiments, the threshold value is of type RSRP-ThresholdMsg1-RepetitionNum8. If the RSRP measurement value of the terminal is less than the threshold value, the terminal determines that Msg1 of the random access procedure adopts the repeated transmission method and the number of repeated transmissions is 8, and initiates the random access procedure using the random access resource corresponding to the repeated transmission method of Msg1.

[0154] In some embodiments, the threshold value is of type RSRP ThresholdMsg3. If the RSRP measurement value of the terminal is less than the threshold value, the terminal determines that the Msg3 of the random access procedure adopts the repeated transmission mode, and initiates the random access procedure using the random access resource corresponding to the repeated transmission mode of Msg3.

[0155] In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0156] In some embodiments, the terms "codebook," "codeword," and "precoding matrix" can be used interchangeably. For example, a codebook can be a collection of one or more codewords / precoding matrices.

[0157] In some embodiments, the terms "uplink", "uplink", and "physical uplink" can be used interchangeably, as can the terms "downlink", "downlink", and "physical downlink", as well as the terms "sidelink", "sidelink", "sidelink communication", "sidelink communication", "direct connection", "direct link", "direct communication", and "direct link communication".

[0158] In some embodiments, the terms “downlink control information (DCI),” “downlink (DL) assignment,” “DL DCI,” “uplink (UL) grant,” and “UL DCI” can be used interchangeably.

[0159] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, as can terms such as "physical uplink shared channel (PUSCH)" and "UL data".

[0160] In some embodiments, the terms “radio”, “wireless”, “radio access network (RAN)”, “access network (AN)”, and “RAN-based” can be used interchangeably.

[0161] In some embodiments, the terms "search space", "search space set", "search space configuration", "search space set configuration", "control resource set (CORESET)", and "CORESET configuration" can be used interchangeably.

[0162] In some embodiments, the terms "synchronization signal (SS)," "synchronization signal block (SSB)," "reference signal (RS)," "pilot," and "pilot signal" can be used interchangeably.

[0163] In some embodiments, terms such as “moment,” “point in time,” “time,” and “time location” can be used interchangeably, as can terms such as “duration,” “segment,” “time window,” “window,” and “time.”

[0164] In some embodiments, the terms "component carrier (CC)," "cell," "frequency carrier," and "carrier frequency" can be used interchangeably.

[0165] In some embodiments, the terms “resource block (RB)”, “physical resource block (PRB)”, “sub-carrier group (SCG)”, “resource element group (REG)”, “PRB pair”, “RB pair”, “resource element (RE)”, and “sub-carrier” can be used interchangeably.

[0166] In some embodiments, terms such as wireless access scheme and waveform can be used interchangeably.

[0167] In some embodiments, "acquire," "get," "obtain," "receive," "transmit," "bidirectional transmission," and "send and / or receive" can be used interchangeably and can be interpreted as receiving from other entities, acquiring from protocols, acquiring from higher layers, obtaining through self-processing, or autonomous implementation. Protocols include, for example, at least one of the 3GPP protocol, Wi-Fi protocol, and audio and / or video protocols.

[0168] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transmit,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0169] In some embodiments, terms such as "certain," "preset," "default," "set," "indicated," "a certain," "any," and "first" can be used interchangeably. "Certain A," "preset A," "default A," "set A," "indicated A," "a certain A," "any A," and "first A" can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.

[0170] In some embodiments, the determination or judgment can be made by a value represented by 1 bit (0 or 1), or by a true or false value (boolean), or by a comparison of numerical values ​​(e.g., a comparison with a predetermined value), but is not limited thereto.

[0171] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data and / or instructions received; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the receiver to respond to the sent content.

[0172] In some embodiments, if an arrow in the interaction diagram representing the sending of information, signaling, etc. from one subject to another passes through other subjects, it can be interpreted as the information being forwarded from one subject to another via other subjects, or it can be interpreted as the information being sent from one subject to another without passing through other subjects.

[0173] The communication method involved in the embodiments of this disclosure may include at least one of steps S2101 to S2106. For example, step S2101 may be implemented as a standalone embodiment, step S2101+S2102 may be implemented as a standalone embodiment, and step S2103 may be implemented as a standalone embodiment, but is not limited thereto.

[0174] In some embodiments, steps S2101 and S2103 may be performed in an alternate order or simultaneously, and steps S2102 and S2103 may be performed in an alternate order or simultaneously.

[0175] In some embodiments, steps S2102, S2103, S2104, S2105, and S2106 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0176] In some embodiments, steps S2103, S2104, S2105, and S2106 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0177] In some embodiments, steps S2104, S2105, and S2106 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0178] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0179] Figure 3 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 3, the embodiments of the present disclosure relate to a communication method, which includes:

[0180] Step S3101: The network device sends the first information to the terminal.

[0181] In some embodiments, the terminal receives first information sent by the network device.

[0182] In some embodiments, the first information is used to determine the first path loss value corresponding to the random access procedure.

[0183] In some embodiments, the first path loss value may be a target path loss value; for a TRP used for uplink and downlink transmission, the first path loss value may be a path loss value measured from a path loss reference signal; for a TRP used only for uplink transmission, the first path loss value is a path loss value after compensation of the path loss value measured from the path loss reference signal.

[0184] In some embodiments, the first information includes at least one of the following:

[0185] The first reference signal is used for road loss measurement.

[0186] Cell information corresponding to the first reference signal;

[0187] Road loss offset information;

[0188] The identifier (or spatial relationship identifier) ​​of the first beam corresponding to the first reference signal or path loss offset information.

[0189] In some embodiments, the first path loss value is determined based on the path loss offset value and the second path loss value, and the second path loss value is obtained based on the measurement of the first reference signal.

[0190] In some embodiments, the terminal can measure the first reference signal to obtain a second path loss value, which can be used as a reference path loss value; the terminal can determine the first path loss value based on the second path loss value and the path loss offset value.

[0191] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0192] In some embodiments, random access procedures are classified into two types based on whether random access transmission resources are shared among multiple terminals: Contention Based Random Access (CBRA) and Contention Free Random Access (CFRA).

[0193] In some embodiments, the random access procedure is divided into the following based on the number of message steps sent and received by the terminal: 2-step random access procedure (2-step RACH): including MsgA / MsgB in the order of message sending and receiving; 4-step random access procedure (4-step RACH): including Msg1 / Msg2 / Msg3 / Msg4 in the order of message sending and receiving.

[0194] In some embodiments, the terminal needs to compare its measured downlink RSRP value (e.g., the RSRP value of a path loss reference signal) with a threshold value configured by the network, and select between random access resources and random access types. The threshold value types configured by the network include:

[0195] RSRP-ThresholdSSB: The Reference Signal Received Power (RSRP) threshold used for selecting the Synchronous Signal Block (SSB) in the 4-step random access procedure. If the random access procedure is triggered for beam failure recovery, this threshold for SSB selection of candidate beams is provided in the beam failure recovery configuration. If the terminal's SSB RSRP measurement is greater than this threshold, the terminal selects an SSB with a higher RSRP value for the 4-step random access procedure and initiates the random access procedure using the random access resource corresponding to the selected SSB.

[0196] RSRP-ThresholdCSI-RS: The RSRP threshold used for selecting the Channel State Information Reference Signal (CSI-RS) in the 4-step random access procedure. If the random access procedure is triggered for beam failure recovery, this threshold for selecting the candidate beam's CSI-RS is provided in the beam failure recovery configuration. If the terminal's CSI-RS RSRP measurement is greater than this threshold, the terminal selects a CSI-RS with a higher value for the 4-step random access procedure and initiates the random access procedure using the random access resource corresponding to the selected CSI-RS.

[0197] MsgA-RSRP-ThresholdSSB: The RSRP threshold used for SSB selection in the two-step random access procedure. If the RSRP measurement value of the terminal's SSB is greater than this threshold, the terminal selects an SSB with a higher RSRP value for the two-step random access procedure and initiates the random access procedure using the random access resource corresponding to the selected SSB.

[0198] RSRP-ThresholdSSB-SUL: This is the RSRP threshold used to select between the Normal Uplink (NUL) carrier and the Supplementary Uplink (SUL) carrier. If the terminal's RSRP measurement is less than this threshold, the terminal selects the SUL carrier and initiates a random access procedure using the random access resources corresponding to the SUL carrier. Otherwise, the terminal selects the NUL carrier and initiates a random access procedure using the random access resources corresponding to the NUL carrier.

[0199] MsgA-RSRP-Threshold: When both the 2-step and 4-step random access procedures are configured in the uplink bandwidth part (BWP), this is used to select the RSRP threshold for the 2-step and 4-step random access procedures. If the terminal's RSRP measurement value is greater than this threshold, the terminal triggers the 2-step random access procedure; otherwise, the terminal triggers the 4-step random access procedure.

[0200] RSRP-ThresholdMsg1-RepetitionNum2: This is used to select the RSRP threshold for repeated transmission of Msg1, and the corresponding random access resource for the case where the retransmission count is 2. If the terminal's RSRP measurement value is less than this threshold, the terminal considers that its random access procedure uses repeated transmission of Msg1, and the retransmission count is 2. It then initiates the random access procedure using the random access resource corresponding to the Msg1 repeated transmission method.

[0201] RSRP-ThresholdMsg1-RepetitionNum4: This is used to select the RSRP threshold for repeated transmission of Msg1, specifically the random access resource corresponding to the case where the retransmission count is 4. If the terminal's RSRP measurement is less than this threshold, the terminal assumes that its random access procedure uses repeated transmission of Msg1, with a retransmission count of 4. It then initiates the random access procedure using the random access resource corresponding to this Msg1 retransmission method.

[0202] RSRP-ThresholdMsg1-RepetitionNum8: This is used to select the RSRP threshold for repeated transmission of Msg1, and the corresponding random access resource when the retransmission count is 8. If the terminal's RSRP measurement value is less than this threshold, the terminal considers that its random access procedure uses repeated transmission of Msg1, and the retransmission count is 8. It then initiates the random access procedure using the random access resource corresponding to this Msg1 repeated transmission method.

[0203] RSRP ThresholdMsg3: This is the RSRP threshold for selecting when Msg3 is repeatedly transmitted, corresponding to the random access resource. If the terminal's RSRP measurement value is less than this threshold, the terminal considers that its random access procedure uses the repeated transmission method for Msg3. It then initiates the random access procedure using the random access resource corresponding to this Msg3 repeated transmission method.

[0204] When a terminal needs to initiate a random access procedure on multiple uplink TRPs, and these multiple uplink TRPs correspond to a single downlink reference, the problems that need to be solved are: which uplink TRP the terminal chooses to initiate the random access procedure on, and how to control the transmission of uplink signals and the reception of corresponding downlink signals on these multiple uplink TRPs.

[0205] In some embodiments, by controlling the terminal to initiate random access procedures at different TRPs through network configuration, the terminal can determine a more suitable uplink transmission TRP based on the same downlink reference, thereby ensuring the success rate of the terminal's uplink signal transmission and improving the success probability of the random access procedure.

[0206] In some embodiments, the terminal triggers a random access procedure and executes the random access procedure according to the "random access selection threshold configuration corresponding to the path loss information".

[0207] In some embodiments, for a random access procedure (or a specific beam) that indicates “use path loss offset”, the RSRP value corresponding to the “random access procedure” (or “specific beam”) is calculated based on the “RSRP measured by path loss reference signal” and the “path loss offset”.

[0208] The “configuration of random access selection threshold value corresponding to road loss information” includes: road loss information and random access selection threshold value, wherein the random access selection threshold value includes at least one of the above threshold values.

[0209] The road damage information includes:

[0210] Path loss reference signal ID;

[0211] Cell information corresponding to the path loss reference signal; wherein, the “cell information” includes at least one of the following: cell identifier (e.g., Physical Cell Identifier (PCI) or Serving Cell Identifier (e.g., serving_cell_1)); cell group identifier (e.g., Master Cell Group (MCG) or Secondary Cell Group (SCG)); and Bandwidth Part (BWP) identifier (e.g., BWP-ID);

[0212] The spatial relationship identifier (or beam identifier) ​​(e.g., TCI-state-ID) corresponding to the “road loss reference signal” or “road loss offset information”; wherein, the “spatial relationship identifier information” may include at least one of the following: TCI-state identifier; SSB identifier; CSI-RS identifier; Sounding Reference Signal (SRS) identifier;

[0213] Road loss offset information; wherein the "road loss offset information" includes at least one of the following: indication information on whether road loss offset is used (e.g., 1 bit value "0" indicates that road loss offset is not used, and value "1" indicates that road loss offset is used); road loss offset value (e.g., 2dB).

[0214] In some embodiments, the terminal triggers a random access procedure and executes the random access procedure based on the "path loss information" and / or the "random access selection threshold configuration corresponding to the path loss information".

[0215] In some embodiments, the network device provides the terminal with random access configuration information, as well as "path loss information" corresponding to the random access process, and / or "random access selection threshold configuration corresponding to the path loss information".

[0216] In some embodiments, the network side provides the terminal with random access configuration information and "path loss information" corresponding to the random access process.

[0217] The aforementioned "path loss information" can be indicated via RRC messages, MAC CE, or DCI. For example, the network side configures the path loss reference signal (e.g., pathloss_reference) corresponding to the terminal's beam (e.g., TCI-state-1). The network side configures the path loss offset (e.g., pathloss_offset) corresponding to the terminal's beam (e.g., TCI-state-1) via RRC messages, and then the network side can update the path loss offset corresponding to that beam via MAC CE. The network side sends a Physical Downlink Control Channel (PDCCH-order) signaling that triggers the random access procedure. This PDCCH control signaling indicates the path loss offset to be used in the random access procedure (e.g., the RRC message or MAC CE indicates two path loss offsets (e.g., pathloss_offset_1 and pathloss_offset_2), and the DCI indicates the use of one of the path loss offsets (e.g., pathloss_offset_1)), or indicates whether the random access procedure should use a path loss offset.

[0218] Additionally, the network side can provide a "random access selection threshold configuration corresponding to the path loss information". For example, if the network side configures multiple sets of path loss information for the terminal, each set of path loss information has its corresponding "random access selection threshold". When the terminal uses specific path loss information for the random access process, the terminal uses the "random access selection threshold" corresponding to that specific path loss information to execute the random access process.

[0219] For example, the terminal measures the path loss reference signal to obtain the path loss value. For instance, "Path Loss Value - 1" is the measured value of the path loss reference signal, where "Path Loss Value - 1" = Transmit Power - Receive Power, and "Path Loss Value - 2" = "Path Loss Value - 1" + Path Loss Offset. Here, "Path Loss Value - 1" is used for uplink transmission in TCI-state-1, and the terminal compensates for uplink signal transmission power based on "Path Loss Value - 1." "Path Loss Value - 2" is used for uplink transmission in TCI-state-2, and the terminal compensates for uplink signal transmission power based on "Path Loss Value - 2." The terminal measures the RSRP value for the path loss reference signal. When the terminal uses TCI-state-1 (or the reference signal corresponding to TCI-state-1 (e.g., SSB)) for a random access procedure, then the "RSRP Value - 1" corresponding to TCI-state-1 is the "RSRP value obtained by the terminal from measuring the path loss reference signal." When the terminal uses TCI-state-2 (or the reference signal corresponding to TCI-state-2 (e.g., SSB)) for random access, then the “RSRP value-2” corresponding to TCI-state-2 = “RSRP value-1” + path loss offset”, or “RSRP value-2” = “RSRP value-1” - path loss offset”.

[0220] In some embodiments, the terminal triggers a random access procedure and executes the random access procedure based on the "path loss information" and / or the "random access selection threshold configuration corresponding to the path loss information".

[0221] For example, if the "path loss information" indicates "use path loss offset", the terminal compares the "path loss reference signal measurement value" (e.g., RSRP) and the "path loss offset" (e.g., pathloss_offset) with the "random access selection threshold value" to make the corresponding random access selection.

[0222] Furthermore, for a random access procedure (or a specific beam) that indicates "use path loss offset," the RSRP value corresponding to that "random access procedure" (or "specific beam") is calculated based on the "RSRP measured by the path loss reference signal" and the "path loss offset." The RSRP value used for the random access procedure (or "specific beam") is calculated as follows: "RSRP value = "RSRP measured by the path loss reference signal" + "path loss offset," or "RSRP value = "RSRP measured by the path loss reference signal" - "path loss offset."

[0223] Furthermore, if the network side instructs or the terminal selects a specific beam for the random access procedure, the terminal selects the random access procedure (e.g., selects a specific random access type or a specific random access resource) based on the "path loss information" corresponding to the specific beam and the "random access selection threshold value corresponding to the path loss information".

[0224] Furthermore, if the network side instructs or the terminal selects "use path loss offset" for the random access procedure, the terminal selects the random access procedure (e.g., selects a specific random access type or a specific random access resource) based on the "path loss information" corresponding to the "use path loss offset" and the "random access selection threshold value corresponding to the path loss information".

[0225] The “specific beam” information includes at least one of the following (same as “spatial relationship identification information” above): TCI-state identifier, SSB identifier, CSI-RS identifier, and SRS identifier.

[0226] Furthermore, if the "specific beam" information is an "SSB identifier," "CSI-RS identifier," or "SRS identifier," and the spatial relationship identifier corresponding to the "path loss reference signal" or "path loss offset information" configured by the network is a "TCI-state identifier," then the terminal selects the "path loss information" or "path loss offset information" corresponding to the TCI-state that has a quasi-colocation relationship with the "specific beam" for the random access procedure. For example, the network configures TCI-state-1 for the terminal, and TCI-state-1 has its corresponding pathloss_offset. When the identifier information corresponding to the specific beam selected by the terminal or specified by the network is SSB-1, and SSB-1 has a quasi-colocation relationship (Quasi-CoLocation, QCL) with TCI-state-1, then the pathloss_offset corresponding to TCI-state-1 is used to calculate the RSRP value of the random access procedure corresponding to SSB-1. For example, in the random access procedure using SSB-1, the RSRP value used for the random access selection process is calculated based on the pathloss_offset corresponding to the TCI-state-1, where RSRP = path loss reference signal RSRP - path loss offset.

[0227] This disclosure also proposes an apparatus (also referred to as a communication device, etc.) for implementing any of the above methods. For example, an apparatus is proposed that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Furthermore, another apparatus is proposed that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods.

[0228] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0229] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0230] Figure 4A is a schematic diagram of the structure of a terminal according to an embodiment of this disclosure. Terminal 4100 is used to execute any of the above methods. In some embodiments, as shown in Figure 4A, terminal 4100 may include a transceiver module 4101. In some embodiments, the terminal may further include a processing module. In some embodiments, the transceiver module 4101 is used to receive first information. Optionally, the transceiver module is used to execute at least one of the communication steps (e.g., steps S2101, S2103, but not limited thereto) performed by the terminal in any of the above methods, which will not be elaborated here. Optionally, the processing module is used to execute at least one of the other steps (e.g., steps S2102, S2104, S2105, S2106, but not limited thereto) performed by the terminal 101 in any of the above methods, which will not be elaborated here.

[0231] Figure 4B is a schematic diagram of the structure of a network device according to an embodiment of this disclosure. The network device 4200 is used to perform any of the above methods. In some embodiments, as shown in Figure 4B, the network device 4200 may include a transceiver module 4201. In some embodiments, the transceiver module 4201 is used to send first information. Optionally, the transceiver module is used to perform at least one of the communication steps (e.g., steps S2101, S2103, but not limited thereto) performed by the network device in any of the above methods, which will not be elaborated further here.

[0232] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, which may be separate or integrated. Optionally, the transceiver module may be interchangeable with a transceiver.

[0233] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module.

[0234] In some embodiments, the processing module can be replaced by the processor, and the transceiver module can be replaced by the transceiver.

[0235] Figure 5A is a schematic diagram of the structure of the communication device 5100 proposed in an embodiment of this disclosure. The communication device 5100 can be a network device (e.g., access network device, core network device, etc.), a terminal (e.g., user equipment, etc.), a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 5100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0236] As shown in Figure 5A, the communication device 5100 is used to execute any of the above methods. In some embodiments, the communication device 5100 includes one or more processors 5101. The processor 5101 may be a general-purpose processor or a special-purpose processor, such as a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Optionally, the communication device 5100 is used to execute any of the above methods. Optionally, one or more processors 5101 are used to invoke instructions to cause the communication device 5100 to execute any of the above methods.

[0237] In some embodiments, the communication device 5100 further includes one or more transceivers 5102. When the communication device 5100 includes one or more transceivers 5102, the transceiver 5102 performs at least one of the communication steps (e.g., steps S2101, S2103, but not limited thereto) in the above method, such as sending and / or receiving, and the processor 5101 performs at least one of other steps (e.g., steps S2102, S2104, S2105, S2106, but not limited thereto). In optional embodiments, the transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc., can be used interchangeably; the terms transmitter, sending unit, transmitter, sending circuit, etc., can be used interchangeably; the terms receiver, receiving unit, receiver, receiving circuit, etc., can be used interchangeably.

[0238] In some embodiments, the communication device 5100 further includes one or more memories 5103 for storing data and / or instructions. Optionally, one or more processors 5101 are used to invoke instructions stored in the memory 5103 to cause the communication device 5100 to perform any of the above methods. Optionally, all or part of the memory 5103 may also be located outside the communication device 5100. In an optional embodiment, the communication device 5100 may include one or more interface circuits 5104. Optionally, the interface circuit 5104 is connected to the memory 5103 and can be used to receive data and / or instructions from the memory 5103 or other devices, and can be used to send data and / or instructions to the memory 5103 or other devices. For example, the interface circuit 5104 can read data and / or instructions stored in the memory 5103 and send the data and / or instructions to the processor 5101.

[0239] The communication device 5100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 5100 described in this disclosure is not limited thereto, and the structure of the communication device 5100 may not be limited by FIG. 5A. The communication device may be a standalone device or may be part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data, programs and / or instructions; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0240] Figure 5B is a schematic diagram of the structure of chip 5200 according to an embodiment of this disclosure. For cases where the communication device 5100 can be a chip or a chip system, please refer to the schematic diagram of chip 5200 shown in Figure 5B, but it is not limited thereto.

[0241] Chip 5200 includes one or more processors 5201. Chip 5200 is used to perform any of the methods described above.

[0242] In some embodiments, chip 5200 further includes one or more interface circuits 5202. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 5200 further includes one or more memories 5203 for storing data and / or instructions. Optionally, all or part of the memories 5203 may be located outside of chip 5200. Optionally, the interface circuit 5202 is connected to the memories 5203, and the interface circuit 5202 can be used to receive data and / or instructions from the memories 5203 or other devices, and the interface circuit 5202 can be used to send data and / or instructions to the memories 5203 or other devices. For example, the interface circuit 5202 can read data and / or instructions stored in the memories 5203 and send the data and / or instructions to the processor 5201.

[0243] In some embodiments, the interface circuit 5202 performs at least one of the communication steps such as sending and / or receiving in the above-described method (e.g., steps S2101, S2103, but not limited thereto). For example, the interface circuit 5202 performing the communication steps such as sending and / or receiving in the above-described method means that the interface circuit 5202 performs data and / or instruction interaction between the processor 5201, the chip 5200, the memory 5203, or the transceiver device. In some embodiments, the processor 5201 performs at least one of other steps (e.g., steps S2102, S2104, S2105, S2106, but not limited thereto).

[0244] The modules and / or devices described in the various embodiments, such as virtual devices, physical devices, and chips, can be combined or separated arbitrarily as needed. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0245] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0246] This disclosure also proposes a program product, including a program and / or instructions, which, when executed by a communication device, cause the communication device to perform any of the above methods. Optionally, the program product is a computer program product. Optionally, the program product is stored on the storage medium.

[0247] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

1. A communication method, characterized in that, The method, executed by a terminal, includes: The system receives first information sent by a network device, which is used to determine a first path loss value corresponding to a random access procedure.

2. The method according to claim 1, characterized in that, The first information includes a road loss offset value, which is determined based on the road loss offset value and a second road loss value, and the second road loss value is obtained based on a first reference signal measurement.

3. The method according to claim 2, characterized in that, The first information also includes at least one of the following: The identifier of the first reference signal; Cell information corresponding to the first reference signal.

4. The method according to claim 2 or 3, characterized in that, The first information also includes indication information, which indicates whether the road loss offset value is used.

5. The method according to any one of claims 2 to 4, characterized in that, The first information also includes an identifier for a first beam, which corresponds to a first reference signal and / or the path loss offset value.

6. The method according to any one of claims 1 to 5, characterized in that, The method further includes: The threshold value sent by the network device is received, and the threshold value corresponds to the first information.

7. The method according to claim 6, characterized in that, The method further includes: The first reference signal is measured to obtain the first measured value; A second measurement value is determined based on the first measurement value and the first road loss value, or based on the first measurement value and the road loss offset value. In response to the second measured value being greater than a threshold value, random access is determined.

8. The method according to claim 1, characterized in that, The first information corresponds to the first transmission and receiving node, and the random access procedure is used to access the first transmission and receiving node, which is a transmission and receiving node dedicated to uplink transmission.

9. A communication method, characterized in that, Performed by a network device, the method includes: Send first information to the terminal, the first information being used to determine the first path loss value corresponding to the random access procedure.

10. The method according to claim 9, characterized in that, The first piece of information includes the road loss offset value.

11. The method according to claim 10, characterized in that, The first path loss value is determined based on the path loss offset value and the second path loss value, which is obtained based on the measurement of the first reference signal.

12. The method according to claim 11, characterized in that, The first information also includes at least one of the following: The identifier of the first reference signal; Cell information corresponding to the first reference signal.

13. The method according to any one of claims 10 to 12, characterized in that, The first information also includes indication information, which indicates whether the road loss offset value is used.

14. The method according to any one of claims 10 to 13, characterized in that, The first information also includes an identifier for a first beam, which corresponds to a first reference signal and / or the path loss offset value.

15. The method according to any one of claims 9 to 14, characterized in that, The method further includes: A threshold value is sent to the terminal, and the threshold value corresponds to the first information.

16. A communication device, characterized in that, The communication device is used to perform the communication method according to any one of claims 1 to 8 or the communication method according to any one of claims 9 to 15.

17. A communication system, characterized in that, The device includes a terminal and a network device, wherein the terminal is configured to implement the communication method of any one of claims 1 to 8, and the network device is configured to implement the communication method of any one of claims 9 to 15.

18. A storage medium storing instructions, characterized in that, When the instructions are executed on the communication device, the communication device performs the communication method as described in any one of claims 1 to 8 or the communication method as described in any one of claims 9 to 15.

19. A program product, characterized in that, It includes at least one of a program and instructions, wherein when the program and instructions are executed by a communication device, they implement the communication method according to any one of claims 1 to 15.

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