Communication method and device, first terminal, first network node and storage medium

Abstract

The invention discloses a communication method and device, a first terminal, a first network node and a storage medium, and the method comprises the steps that the first terminal transmits second information to the first network node and / or a second terminal or executes a first operation according to at least one of first information, network features and capability information of the first terminal; wherein the second terminal represents a terminal which performs joint communication with the first terminal; the first operation comprises synchronous information reading and / or synchronous information measurement; the first information comprises at least one of the following: the type of information that can be sent; the maximum number of bytes of information that can be sent; a priority of the type of information that can be transmitted; and a group RNTI, wherein the group RNTI represents the RNTI of the first terminal and the second terminal for joint data sending and / or joint data receiving.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method, device, first terminal, first network node and storage medium. Background Art

[0002] Non-terrestrial network (NTN) is a terminal-satellite direct communication technology based on the new radio (NR) technology. However, in the related technology, NTN only supports conventional terminal-satellite communication and cannot meet the communication needs of terminals with limited capabilities. Summary of the invention

[0003] To solve related technical problems, embodiments of the present application provide a communication method, an apparatus, a first terminal, a first network node, and a storage medium.

[0004] The technical solution of the embodiment of the present application is implemented as follows:

[0005] The present application provides a communication method, which is applied to a first terminal, and the method includes:

[0006] According to at least one of the first information, the network characteristics, and the capability information of the first terminal, second information is sent to the first network node and / or the second terminal, or a first operation is performed; wherein,

[0007] The second terminal represents a terminal that performs joint communication with the first terminal;

[0008] The first operation includes synchronization information reading and / or synchronization information measurement;

[0009] The first information includes at least one of the following:

[0010] the types of information that can be sent;

[0011] The maximum number of bytes of information that can be sent;

[0012] the priority of the types of information that can be sent;

[0013] A group radio network temporary identity (RNTI), where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

[0014] In the above solution, before sending the second information to the first network node and / or the second terminal according to the first information, or performing the first operation, the method further includes:

[0015] Receive first information sent by the first network node.

[0016] In the above solution, the first information also includes at least one of the following:

[0017] First resource;

[0018] a radio bearer (RB) corresponding to the first resource;

[0019] a logical channel (LC) corresponding to the first resource;

[0020] a hybrid automatic repeat request (HARQ, Hybrid Automatic Repeat Request) process corresponding to the first resource;

[0021] The offset of the identifier of the HARQ process corresponding to the first resource; wherein,

[0022] The first resource represents a semi-static pre-configured resource used for the first terminal and the second terminal to jointly send data and / or jointly receive data, including at least one of the following:

[0023] Preamble:

[0024] The period and duration of time-frequency resources;

[0025] Modulation and Coding Scheme (MCS);

[0026] The size of the transport block (TB);

[0027] Antenna configuration information;

[0028] Demodulation Reference Signal (DMRS)

[0029] Information of a beam group used to send uplink data; wherein the beam group includes a first beam group and a second beam group, the first beam group is used for the first terminal to send data, and the second beam group is used for the second terminal to send data; the information of the beam group includes frequency domain resources and / or time domain location information of a beam measurement reference signal of the beam group, location information of a resource for sending a measurement result of the beam group, and information related to a time domain interval between a beam measurement reference signal of the beam group and a resource for sending a measurement result of the beam group;

[0030] Frequency hopping information.

[0031] In the above scheme, the total number of uplink beams is M, and the beams included in the first beam group are (B 1 , B 2 , …, B M / 2 ), the beams included in the second beam group are (B M / 2+1 , …, B M );

[0032] The M beams have S beamwidth levels, S = log2(M); where the S beamwidth levels include 2 S beams, the first beam group includes the beams (B 1 , B 2 , …, B 2 S-1 ), the beams included in the second beam group are (B 2 S-1 +1 , …, B 2 S ), each beamwidth covers a continuous M / 2 S beams.

[0033] In the above scheme, the method further comprises:

[0034] Sending capability information of the first terminal to the first network node; wherein the capability information includes at least one of the following:

[0035] Type of capability;

[0036] Number of receiving antennas;

[0037] Number of transmit antennas;

[0038] Supported bandwidth;

[0039] Information processing capabilities;

[0040] Information processing time;

[0041] Maximum supported data transfer rate;

[0042] The maximum supported upstream layer 2 cache capacity;

[0043] The maximum supported downstream layer 2 buffer capacity;

[0044] Whether the uplink and downlink scheduling function with extended time relationship is supported;

[0045] Number of HARQs supported;

[0046] Whether HARQ deactivation is supported;

[0047] Whether to support layer 2 time extension;

[0048] Handles the Random Access Channel (RACH) adaptation capability for setting the Round-Trip Time (RTT).

[0049] In the above scheme, the method further includes at least one of the following:

[0050] When the first terminal receives a non-access stratum (NAS) indication at an access stratum (AS), read non-terrestrial network (NTN) configuration information and / or global navigation satellite system (GNSS) location information;

[0051] When the first terminal receives the NAS indication at the AS layer, it starts serving cell measurement and / or physical downlink control channel (PDCCH, Physical Downlink Control Channel) monitoring.

[0052] In the above scheme, the method further comprises:

[0053] Initiate random access to the first network device on a first initial bandwidth part (BWP, Bandwidth Part); wherein,

[0054] The first initial BWP represents an initial BWP corresponding to a set capability type; information of the first initial BWP is carried in a system message of an NTN where the first network node is located; and the first network device represents a network device located in the NTN.

[0055] In the above solution, before initiating random access to the first network device on the first initial BWP, the method further includes:

[0056] Reporting a timing advance (TA) value of the first terminal to the first network device; wherein,

[0057] The TA value is determined based on the GNSS position information and ephemeris information of the first terminal; the ephemeris information is carried in the system message.

[0058] In the above solution, before initiating random access to the first network device on the first initial BWP, the method further includes:

[0059] In the system message, third information and / or fourth information is obtained; wherein,

[0060] The third information represents common downlink control information (DCI) transmitted in a common search space (CSS);

[0061] The fourth information represents information in a master information block (MIB, Master Indication Block) used to indicate a second resource, and the second resource represents a transmission resource of a CSS type that matches a set capability type.

[0062] In the above solution, the system message also includes at least one of the following:

[0063] Group RNTI;

[0064] Semi-static resource of group RNTI;

[0065] The first condition represents a condition satisfied between terminals forming a group transmission.

[0066] In the above solution, the first condition includes at least one of the following:

[0067] The distance between the terminals belongs to the first setting range;

[0068] The transmit power difference between the terminals belongs to the second set range;

[0069] There is a quasi co-location (QCL) relationship between the terminals.

[0070] The embodiment of the present application further provides a communication method, which is applied to a first network node, and the method includes:

[0071] receiving second information sent by the first terminal; wherein,

[0072] The second information is determined according to at least one of the first information, network characteristics, and capability information of the first terminal; the first information includes at least one of the following:

[0073] the types of information that can be sent;

[0074] The maximum number of bytes of information that can be sent;

[0075] the priority of the types of information that can be sent;

[0076] A group RNTI, where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

[0077] In the above solution, before receiving the second information sent by the first terminal, the method further includes:

[0078] First information is sent to the first terminal according to the height of the first network node and the capability information of the first terminal.

[0079] In the above solution, the first information also includes at least one of the following:

[0080] First resource;

[0081] The RB corresponding to the first resource;

[0082] The LC corresponding to the first resource;

[0083] The HARQ process corresponding to the first resource;

[0084] The offset of the identifier of the HARQ process corresponding to the first resource; wherein,

[0085] The first resource represents a semi-static pre-configured resource used for the first terminal and the second terminal to jointly send data and / or jointly receive data, including at least one of the following:

[0086] preamble;

[0087] The period and duration of time-frequency resources;

[0088] MCS;

[0089] The size of TB;

[0090] Antenna configuration information;

[0091] DMRS;

[0092] Information of a beam group used to send uplink data; wherein the beam group includes a first beam group and a second beam group, the first beam group is used for the first terminal to send data, and the second beam group is used for the second terminal to send data; the information of the beam group includes frequency domain resources and / or time domain location information of a beam measurement reference signal of the beam group, location information of a resource for sending a measurement result of the beam group, and information related to a time domain interval between a beam measurement reference signal of the beam group and a resource for sending a measurement result of the beam group;

[0093] Frequency hopping information.

[0094] In the above scheme, the method further comprises:

[0095] receiving capability information of the first terminal sent by the first terminal, wherein the capability information includes at least one of the following:

[0096] Type of capability;

[0097] Number of receiving antennas;

[0098] Number of transmit antennas;

[0099] Supported bandwidth;

[0100] Information processing capabilities;

[0101] Maximum supported data transfer rate;

[0102] The maximum supported upstream layer 2 cache capacity;

[0103] The maximum supported downstream layer 2 buffer capacity;

[0104] Whether the uplink and downlink scheduling function with extended time relationship is supported;

[0105] Number of HARQs supported;

[0106] Whether HARQ deactivation is supported;

[0107] Whether to support layer 2 time extension;

[0108] Handles RACH adaptation capability for setting RTT.

[0109] The present application also provides a communication device, including:

[0110] A first processing unit, configured to send second information to the first network node and / or the second terminal, or perform a first operation according to at least one of the first information, the network characteristic, and the capability information of the first terminal;

[0111] The second terminal represents a terminal that performs joint communication with the first terminal;

[0112] The first operation includes synchronization information reading and / or synchronization information measurement;

[0113] The first information includes at least one of the following:

[0114] the types of information that can be sent;

[0115] The maximum number of bytes of information that can be sent;

[0116] the priority of the types of information that can be sent;

[0117] A group RNTI, where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

[0118] The present application also provides a communication device, including:

[0119] The first receiving unit is used to receive the second information sent by the first terminal; wherein,

[0120] The second information is determined according to at least one of the first information, network characteristics, and capability information of the first terminal; the first information includes at least one of the following:

[0121] the types of information that can be sent;

[0122] The maximum number of bytes of information that can be sent;

[0123] the priority of the types of information that can be sent;

[0124] A group RNTI, where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

[0125] The embodiment of the present application further provides a first terminal, including: a first processor and a first communication interface, wherein:

[0126] The first processor is configured to send second information to the first network node and / or the second terminal, or perform a first operation according to at least one of the first information, the network characteristics, and the capability information of the first terminal; wherein,

[0127] The second terminal represents a terminal that performs joint communication with the first terminal;

[0128] The first operation includes synchronization information reading and / or synchronization information measurement;

[0129] The first information includes at least one of the following:

[0130] the types of information that can be sent;

[0131] The maximum number of bytes of information that can be sent;

[0132] the priority of the types of information that can be sent;

[0133] A group RNTI, where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

[0134] The embodiment of the present application further provides a first network node, including: a second processor and a second communication interface, wherein:

[0135] The second communication interface is used to receive second information sent by the first terminal; wherein,

[0136] The second information is determined according to at least one of the first information, network characteristics, and capability information of the first terminal; the first information includes at least one of the following:

[0137] the types of information that can be sent;

[0138] The maximum number of bytes of information that can be sent;

[0139] the priority of the types of information that can be sent;

[0140] A group RNTI, where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

[0141] The embodiment of the present application further provides a terminal, comprising: a first processor and a first memory for storing a computer program that can be run on the first processor,

[0142] Wherein, when the first processor is used to run the computer program, it executes the steps of any one of the methods described in the first terminal side.

[0143] The embodiment of the present application further provides a first network node, comprising: a second processor and a second memory for storing a computer program that can be run on the second processor,

[0144] Wherein, when the second processor is used to run the computer program, it executes the steps of any one of the methods described in the first network node side.

[0145] An embodiment of the present application further provides a storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of the method described in any one of the above-mentioned first terminal side or the steps of the method described in any one of the above-mentioned first network node side are implemented.

[0146] In the communication method, device, first terminal, first network node and storage medium provided in the embodiments of the present application, the first terminal sends second information to the first network node and / or the second terminal, or performs a first operation based on at least one of the first information, network characteristics, and capability information of the first terminal; the first network node and / or the second terminal receives the second information sent by the first terminal; wherein the second terminal represents a terminal that communicates jointly with the first terminal; the first operation includes synchronization information reading and / or synchronization information measurement; the first information includes at least one of the following: the type of information that can be sent; the maximum number of bytes of information that can be sent; the priority of the type of information that can be sent; the group wireless network temporary identifier RNTI, and the group RNTI represents the RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data. It can be seen that in the embodiment of the present application, the first terminal can communicate directly with the first network node based on at least one of the first information, the network characteristics, and the capability information of the first terminal, or communicate with the first network node through the second terminal, so that the first terminal can communicate directly or indirectly with the first network node. When the first terminal is a terminal with limited capabilities and the first network node is a satellite of NTN, even in an environment without TN, the first terminal can communicate with the outside world through NTN, thereby meeting the communication needs of users in emergency scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0147] Figure 1 A flow chart of a communication method according to an embodiment of the present application;

[0148] Figure 2 A flow chart of a communication method according to an embodiment of the present application;

[0149] Figure 3 This is a schematic diagram of the structure of a communication device according to an embodiment of the present application;

[0150] Figure 4 This is a schematic diagram of the structure of a communication device according to an embodiment of the present application;

[0151] Figure 5 This is a schematic diagram of the first terminal structure of an embodiment of the present application;

[0152] Figure 6 This is a schematic diagram of the first network node structure of an embodiment of the present application. DETAILED DESCRIPTION

[0153] In NTN, due to the high altitude of the satellite from the ground, the long delay from the satellite to the ground, and the fast movement speed of the satellite, the uplink transmission power, downlink coverage performance, data transmission reliability, etc. of the terminals used in the traditional terrestrial network (TN) are challenged. For example, for the terminal, there are relatively higher requirements for the uplink transmission power, and the number of HARQ processes is too large, resulting in limited soft buffer capacity of the terminal.

[0154] Table 1 shows the relationship between the ephemeris information and the maximum time, process activity of a 1 ms time slot, and feasibility on the terminal side.

[0155] Table 1

[0156]

[0157] TBS is the transport block size and FFS is the flip-flop group.

[0158] In related technologies, in order to meet the new demands of satellite network communications, the related communication standards have optimized and enhanced the functions from the control plane, user plane, physical layer and other aspects based on the demands of existing terminals; however, currently NTN only supports conventional terminals to directly communicate with satellites, and cannot meet the communication demands of terminals with limited capabilities, including lightweight capability / reduced capability (RedCap) terminals, wearable devices, etc. For example, wearable devices and other terminals with limited capabilities cannot communicate with the outside world through NTN in an environment without TN, such as emergency scenarios.

[0159] Based on this, in each embodiment of the present application, according to at least one of the first information, the network feature, and the capability information of the first terminal, the first terminal sends the second information to the first network node and / or the second terminal, or performs the first operation; the first network node and / or the second terminal receives the second information sent by the first terminal; wherein the second terminal represents the terminal that performs joint communication with the first terminal; the first operation includes synchronization information reading and / or synchronization information measurement; the first information includes at least one of the following: the type of information that can be sent; the maximum number of bytes of information that can be sent; the priority of the type of information that can be sent; the group RNTI, the group RNTI represents the RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data. It can be seen that in the embodiment of the present application, the first terminal can communicate directly with the first network node according to at least one of the first information, the network feature, and the capability information of the first terminal, or communicate with the first network node through the second terminal, so that the first terminal can communicate directly or indirectly with the first network node. When the first terminal is a terminal with limited capability and the first network node is a satellite of NTN, even in an environment without TN, the first terminal can communicate with the outside world through NTN, thereby meeting the communication needs of users in emergency scenarios.

[0160] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0161] The embodiment of the present application provides a communication method, which is applied to a first terminal, and the first terminal includes a terminal with limited capabilities, and the terminal with limited capabilities includes a RedCap terminal, a wearable device, etc. The first terminal may include an antenna radiator, a satellite communication module / NTN communication module, a ground communication module, a GNSS positioning module, and a processor. The NR technology and the satellite communication module / NTN communication module are implanted in the first terminal. The first terminal can communicate with the satellite through the satellite communication module / NTN communication module to realize functions including positioning, calling, and sending text messages. Figure 1 As shown, the method includes:

[0162] Step 101: Send second information to a first network node and / or a second terminal, or perform a first operation, according to at least one of first information, network characteristics, and capability information of the first terminal.

[0163] The second terminal represents a terminal that performs joint communication with the first terminal; the first operation includes synchronization information reading and / or synchronization information measurement;

[0164] The first information includes at least one of the following:

[0165] the types of information that can be sent;

[0166] The maximum number of bytes of information that can be sent;

[0167] the priority of the types of information that can be sent;

[0168] A group RNTI, where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

[0169] Here, the network characteristics may be understood as network characteristics of NTN, and the network characteristics may include at least one of bandwidth, maximum data transmission rate, delay, and throughput. Joint communication may be understood as joint transmission and / or joint reception.

[0170] In the case of sending the second information according to the first information, the type of the second information belongs to the type of information that can be sent included in the first information, and the maximum number of bytes of the second information is less than or equal to the maximum number of bytes of information that can be sent included in the first information. The maximum number of bytes of the information that can be sent can be represented by a linearly and / or exponentially generated sequence number. If the maximum number of bytes of the information that can be sent is represented by a linearly generated sequence number, then the maximum number of bytes of the information that can be sent M 1 =M min , and M k =M k-1 +Round down(M min ×p); k = 2, ..., N; p is the set quantization error. If the maximum number of bytes of information that can be sent is represented by a sequence number generated by an exponential, then the maximum number of bytes of information that can be sent is M 1 =M min , and M k =M k-1 +Round down(M k-1 ×p), k=2,……,N.

[0171] The type of information includes at least one of text, picture and video, wherein in an emergency scenario, the type of information may include at least one of location information of the trapped location (such as latitude and longitude information, GNSS location information), picture, map and video. The priority of the type of information may be divided according to the capability information of the first terminal and the number of bytes occupied by the information; text has the highest priority, picture has the second highest priority, and video has the lowest priority.

[0172] In actual application, the first terminal can determine the priority of the type of information that can be sent based on the first information, and send the second information to the first network node and / or the second terminal based on the capability information of the first terminal and the priority of the type of information that can be sent; the first network node can be a satellite or a server, such as a cloud server.

[0173] For example, when the first terminal is a terminal with limited capabilities, the first terminal preferably sends the second information in the form of text; when the capability of the first terminal is large enough, the first terminal can send the second information in the form of video, picture or map.

[0174] For another example, the first terminal may display the types of information that can be sent and the priority of the types of information that can be sent on the user interface; upon receiving the priority of the types of information that can be sent selected by the user, the second terminal may preferentially send the second information as a high-priority type based on the priority of the types of information that can be sent selected by the user and based on the uplink sending capability of the first terminal.

[0175] In actual application, in an emergency scenario, step 101 is performed. The emergency scenario can also be understood as an emergency scenario, which specifically refers to a scenario where the NT cannot provide a communication function, such as a NT failure or paralysis.

[0176] In order to improve the accuracy of the first information, the first information may be sent by the satellite according to the altitude of the satellite and the capability information of the terminal. Based on this, in one embodiment, before sending the second information to the first network node and / or the second terminal according to the first information, or performing the first operation, the method further includes:

[0177] Receive first information sent by the first network node.

[0178] Here, the first network node comprises a satellite.

[0179] In order to improve the efficiency of the joint communication between the first terminal and the second terminal, the first information may indicate the resources used by the first terminal and the second terminal for the joint communication. Based on this, in one embodiment, the first information further includes at least one of the following:

[0180] First resource;

[0181] The RB corresponding to the first resource;

[0182] The LC corresponding to the first resource;

[0183] The HARQ process corresponding to the first resource;

[0184] The offset of the identifier of the HARQ process corresponding to the first resource; wherein,

[0185] The first resource represents a semi-static pre-configured resource used for the first terminal and the second terminal to jointly send data and / or jointly receive data, including at least one of the following:

[0186] preamble;

[0187] The period and duration of time-frequency resources;

[0188] MCS;

[0189] The size of TB;

[0190] DMRS;

[0191] Information of a beam group used to send uplink data; wherein the beam group includes a first beam group and a second beam group, the first beam group is used for the first terminal to send data, and the second beam group is used for the second terminal to send data; the information of the beam group includes frequency domain resources and / or time domain location information of a beam measurement reference signal of the beam group, location information of a resource for sending a measurement result of the beam group, and information related to a time domain interval between a beam measurement reference signal of the beam group and a resource for sending a measurement result of the beam group;

[0192] Frequency hopping information.

[0193] Here, the size of a TB may also be referred to as a TB-size or a TBS (ie, Transport Block Size). The time-frequency resources include time domain resources and / or frequency domain resources.

[0194] The information of the beam group used to send uplink data includes information of the first beam group and information of the second beam group. The information of the first beam group includes frequency domain resources and / or time domain location information of the beam measurement reference signal of the first beam group, location information of the resource for sending the measurement result of the first beam group, and related information of the time domain interval between the beam measurement reference signal of the first beam group and the resource for sending the measurement result of the first beam group. The information of the second beam group includes frequency domain resources and / or time domain location information of the beam measurement reference signal of the second beam group, location information of the resource for sending the measurement result of the second beam group, and related information of the time domain interval between the beam measurement reference signal of the second beam group and the resource for sending the measurement result of the second beam group. The location information of the resource includes frequency domain location information and / or time domain location information of the resource.

[0195] In one embodiment, the total number of uplink beams is M, and the beams included in the first beam group are (B 1 , B 2 , …, B M / 2 ), the beams included in the second beam group are (B M / 2+1 , …, B M );

[0196] The M beams have S beamwidth levels, S = log2(M); where the S beamwidth levels include 2 S beams, the first beam group includes the beams (B 1 , B 2 , …, B 2S-1 ), the beams included in the second beam group are (B 2 S-1 +1 , …, B 2 S ), each beamwidth covers a continuous M / 2 S beams.

[0197] Here, the total number of uplink beams is M, and the M beams have S beamwidth levels, and the S beamwidth levels include 2 S beams, S = log2(M). A beam can also be understood as a narrow beam.

[0198] When the total number of uplink beams is M, the first beam group and the second beam group each include 2 / M continuous beams, and the beams of the first beam group are different from the beams of the second beam group; the beams included in the first beam group may be (B 1 , B 2 , …, B M / 2 ), the beams included in the second beam group may be (B M / 2+1 , …, B M ).

[0199] There are S beamwidth levels in the M beams, and the S beamwidth levels include 2 S In the case of 2 beams, the first beam group and the second beam group both include 2 S-1 The beams of the first beam group are different from the beams of the second beam group; the beams included in the first beam group may be (B 1 , B 2 , …, B 2 S-1 ), the beams included in the second beam group may be (B 2 S -1 +1 , …, B 2 S ).

[0200] In order to ensure that the first information sent by the first network node to the first terminal is compatible with the capability of the first terminal to improve the accuracy of the first information, the first information can be sent by the satellite according to the altitude of the satellite and the capability of the terminal. Therefore, before receiving the first information, the first terminal also needs to report the capability information of the first terminal to the satellite. Based on this, in one embodiment, the method further includes:

[0201] Sending capability information of the first terminal to the first network node; wherein the capability information includes at least one of the following:

[0202] Type of capability;

[0203] Number of receiving antennas;

[0204] Number of transmit antennas;

[0205] Supported bandwidth;

[0206] Information processing capabilities;

[0207] Information processing time;

[0208] Maximum supported data transfer rate;

[0209] The maximum supported upstream layer 2 cache capacity;

[0210] The maximum supported downstream layer 2 buffer capacity;

[0211] Whether the uplink and downlink scheduling function with extended time relationship is supported;

[0212] Number of HARQs supported;

[0213] Whether HARQ deactivation is supported;

[0214] Whether to support layer 2 time extension;

[0215] Handles RACH adaptation capability for setting RTT.

[0216] Here, layer 2 refers to the second layer in the Open System Interconnect (OSI) reference model, namely the data link layer, including at least one of the following: Media Access Control (MAC) layer, Radio Link Control (RLC) layer, and Packet Data Convergence Protocol (PDCP) layer. In addition, the set RTT can also be called a long RTT.

[0217] In actual application, the capabilities of the first terminal can be divided into two levels or two dimensions. The capabilities of the first level or the first dimension include capability types, and the capabilities of the second level or the second dimension include at least one item other than the capability types mentioned above. Capability types are also called terminal types, and terminal types can be understood as types divided according to the capabilities of the terminals. Capability types include conventional terminals (also called conventional terminals), Redcap, enhanced machine type communication (eMTC, enhanced Machine-TypeCommunication), and narrowband Internet of Things (NB-IoT, Narrow Band Internet of Things).

[0218] In one embodiment, the method further comprises:

[0219] When the first terminal receives the NAS indication from the AS, reading the NTN configuration information and / or the GNSS location information;

[0220] When the first terminal receives the NAS indication at the AS layer, it starts serving cell measurement and / or PDCCH monitoring.

[0221] Here, the NAS indication may be used to indicate that the first terminal transmits data via the NTN. Reading synchronization information includes reading NTN configuration information and / or GNSS location information, and the NTN configuration information includes information for synchronization. Starting service cell measurement and / or PDCCH monitoring to implement synchronization information measurement. The service cell may be understood as an NTN service cell.

[0222] In the protocol stack, the RRC layer and the Radio Access Network Application Part (RANAP) layer and the protocol layers below them are called the access layer, and the mobility management (MM), session management (SM), call control (CC), short messaging service (SMS) and other layers above them are called the non-access layer.

[0223] It should be noted that in this embodiment, the timer function in the prior art is disabled. This is different from the prior art in that the satellite terminal needs to periodically update information after NTN-CONFIG times out or GNSS information times out due to synchronization requirements. When the first terminal receives a NAS indication from the AS, it reads the NTN configuration information and / or GNSS position information, which can save more power.

[0224] It should be noted that in the prior art, the measurement of the service cell is generally triggered by the conventional test of the terminal to trigger the same-frequency neighboring area measurement or different-frequency measurement. In the first terminal of the present application, such as a bracelet device, the service cell measurement is also started by on-demand triggering, which is specifically controlled by NAS. When the first terminal receives the NAS indication at the AS layer, the service cell measurement, PDCCH monitoring and other actions are started, which is more power-saving and can achieve better power-saving effects than the power-saving methods such as PSM and EDRX in the prior art.

[0225] In order to enable the first terminal to successfully access the NTN, in one embodiment, the method further includes:

[0226] On the first initial BWP, a random access is initiated to the first network device; wherein,

[0227] The first initial BWP represents an initial BWP corresponding to a set capability type; information of the first initial BWP is carried in a system message of an NTN where the first network node is located; and the first network device represents a network device located in the NTN.

[0228] Here, when the first terminal is a terminal with limited capability, that is, the capability type of the first terminal is a set capability type, random access is initiated to the first network device on the first initial BWP; the set capability type is used to indicate a terminal with limited capability, and the set capability type may include at least one of Redcap, eMTC, and NB-IoT. The first network device can be understood as an NTN base station, an NTN gateway, etc.; when the first network node is a satellite, the NTN base station can be set on the first network node. The system message can be understood as an NTN system message.

[0229] In actual application, in an emergency scenario, when the first terminal is a terminal with limited capabilities, random access is initiated to the first network device on the first initial BWP.

[0230] On the first initial BWP, the implementation process of initiating random access to the first network device is as follows:

[0231] The first terminal searches for NTN and reads the system message of NTN; searches for fifth information in the system message of NTN, where the fifth information is used to indicate the first initial BWP; when the fifth information is found, random access is initiated to the first network device on the first initial BWP indicated by the fifth information. The fifth information may include the bandwidth size and position of the first initial BWP.

[0232] It should be noted that, in the case where the first terminal is a terminal with limited capabilities, the first initial BWP can be understood as the initial BWP corresponding to the capability type to which the first terminal belongs. The first initial BWP can be understood as an initial BWP configured separately for the bandwidth receiving capability of the terminal of the set capability type, including an independent initial downlink BWP and / or an initial uplink BWP.

[0233] Before initiating random access, the first terminal needs to perform uplink synchronization with the NTN. Based on this, in one embodiment, before initiating random access to the first network device on the first initial BWP, the method further includes:

[0234] Reporting the TA value of the first terminal to the first network device; wherein,

[0235] The TA value is determined based on the GNSS position information and ephemeris information of the first terminal; the ephemeris information is carried in the system message.

[0236] Here, the first terminal can determine the TA value of the first terminal based on the GNSS position information of the first terminal and the ephemeris information of the first network node, and report the TA value of the first terminal to the first network device, thereby completing uplink and downlink time domain synchronization and uplink and downlink frequency domain synchronization with the first network device based on the TA value; the first network device is a network device located in NTN, which can be understood as an NTN base station, NTN gateway, etc.

[0237] In actual application, in an emergency scenario, the first terminal searches for NTN and reads the system message of NTN; reads the ephemeris information of the first network node in the system message of NTN; determines the position information corresponding to the first network node at different times based on the ephemeris information of the first network node; determines the TA value of the first terminal based on the GNSS position information of the first terminal and the position information corresponding to the first network node at different times, and reports the TA value of the first terminal to the first network device.

[0238] Before initiating random access, the first terminal needs to perform downlink synchronization with the NTN. Based on this, in one embodiment, before initiating random access to the first network device on the first initial BWP, the method further includes:

[0239] In the system message, third information and / or fourth information is obtained; wherein,

[0240] The third information represents the common DCI transmitted in the CSS;

[0241] The fourth information represents information in the MIB used to indicate a second resource, and the second resource represents a transmission resource of a CSS type that matches a set capability type.

[0242] Here, the first terminal may obtain the third information and / or the fourth information in a system message in an emergency scenario. The first terminal is a terminal with limited capabilities.

[0243] Specifically, the first terminal may search for NTN and read the system message of NTN; obtain the third information from the system message of NTN; obtain MIB from the system message of NTN, and obtain information indicating the second resource in the MIB to obtain the fourth information.

[0244] The second resource can be understood as a transmission resource of Type0 CSS that matches the set capability type (terminal type); the second resource includes at least the PDCCH of the system information block (SIB1). The Type0 CSS that matches the set capability type is a subset of the Type0CSS of the cell of the first network device; Type0 CSS is used to schedule the PDCCH of the system information block (SIB1), and the position of the transmission resource of SIB1 is bound to the synchronization signal block (SSB), so the first terminal can combine the position of the transmission resource of SIB1 and the SSB, thereby completing downlink time domain synchronization and downlink frequency domain synchronization with the first network device.

[0245] In order to facilitate the first terminal to send the second information in a group and break through the limitation of the sending capability of the first terminal, in one embodiment, the system message further includes at least one of the following:

[0246] Group RNTI;

[0247] Semi-static resource of group RNTI;

[0248] The first condition represents a condition satisfied between terminals forming a group transmission.

[0249] Here, the semi-static resource of the group RNTI includes at least one of the following:

[0250] preamble;

[0251] The period and duration of time-frequency resources;

[0252] MCS;

[0253] TB-size;

[0254] Antenna configuration information;

[0255] DMRS;

[0256] Information of a beam group used to send uplink data; wherein the beam group includes a first beam group and a second beam group, the first beam group is used for the first terminal to send data, and the second beam group is used for the second terminal to send data; the information of the beam group includes frequency domain resources and / or time domain location information of a beam measurement reference signal of the beam group, location information of a resource for sending a measurement result of the beam group, and information related to a time domain interval between a beam measurement reference signal of the beam group and a resource for sending a measurement result of the beam group;

[0257] Frequency hopping information.

[0258] In one embodiment, the total number of uplink beams is M, and the beams included in the first beam group are (B 1 , B 2 , …, B M / 2 ), the beams included in the second beam group are (B M / 2+1 , …, B M );

[0259] The M beams have S beamwidth levels, S = log2(M); where the S beamwidth levels include 2 S beams, the first beam group includes the beams (B 1 , B 2 , …, B 2 S-1 ), the beams included in the second beam group are (B 2 S-1 +1 , …, B 2 S ), each beamwidth covers a continuous M / 2 S beams.

[0260] In one embodiment, the first condition includes at least one of the following:

[0261] The distance between the terminals belongs to the first setting range;

[0262] The transmit power difference between the terminals belongs to the second set range;

[0263] There is a QCL relationship between the terminals.

[0264] Here, when the first condition is met between the first terminal and at least two second terminals, the first terminal establishes a virtual group, the identifier of the virtual group is set to the group RNTI, and the virtual group includes the first terminal and the at least two second terminals; the first terminal sends the second information to the virtual group, and all second terminals in the virtual group can receive the second information. It should be noted that when the system message also includes the semi-static resource of the group RNTI, the first terminal uses the semi-static resource of the group RNTI to send the second information to the virtual group.

[0265] When there is a QCL relationship between terminals, the corresponding different terminals have the same data transmission and reception parameters, including transmission resources, antenna ports, beams, etc.

[0266] Correspondingly, an embodiment of the present application further provides a communication method, which is applied to a first network node, and the first network node includes a satellite and / or a server, such as a cloud server. Figure 2 As shown, the method includes:

[0267] Step 203: receiving the second information sent by the first terminal; wherein,

[0268] The second information is determined according to at least one of the first information, network characteristics, and capability information of the first terminal; the first information includes at least one of the following:

[0269] the types of information that can be sent;

[0270] The maximum number of bytes of information that can be sent;

[0271] the priority of the types of information that can be sent;

[0272] A group RNTI, where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

[0273] In the case where the first network node is a satellite, the first network node sends the first information to the first terminal to improve the accuracy of the first information. Based on this, in one embodiment, before receiving the second information sent by the first terminal, the method further includes:

[0274] First information is sent to the first terminal according to the height of the first network node and the capability information of the first terminal.

[0275] Here, the first network node can obtain the location information of the first network node from the ephemeris information of the first network node, determine the height of the first network node according to the location information of the first network node; determine the first information according to the height of the first network node and the capability information of the first terminal, and send the first information to the first terminal. The capability information of the first terminal can be pre-stored in the first network node or reported by the first terminal. The first information includes at least one of the following: the type of information that can be sent, the maximum number of bytes of information that can be sent, and the priority of the type of information that can be sent.

[0276] The first network node may also determine the type of satellite to which the first network node belongs based on the altitude of the first network node, where the satellite type may be a low-orbit satellite, a medium-orbit satellite, or a high-orbit satellite; and send the first information to the first terminal based on the type of satellite to which the first network node belongs and the capability information of the first terminal. The types of information and the maximum number of bytes supported by different satellite types may be the same or different.

[0277] In the case where the first network node is a satellite, in order to improve the efficiency of joint communication between the first terminal and the second terminal, the first network node may indicate the resources used by the first terminal and the second terminal for joint communication through first information. Based on this, in one embodiment, the first information further includes at least one of the following:

[0278] First resource;

[0279] The RB corresponding to the first resource;

[0280] The LC corresponding to the first resource;

[0281] The HARQ process corresponding to the first resource;

[0282] The offset of the identifier of the HARQ process corresponding to the first resource; wherein,

[0283] The first resource represents a semi-static pre-configured resource used for the first terminal and the second terminal to jointly send data and / or jointly receive data, including at least one of the following:

[0284] preamble;

[0285] The period and duration of time-frequency resources;

[0286] MCS;

[0287] The size of TB;

[0288] Antenna configuration information;

[0289] DMRS;

[0290] Information of a beam group used to send uplink data; wherein the beam group includes a first beam group and a second beam group, the first beam group is used for the first terminal to send data, and the second beam group is used for the second terminal to send data; the information of the beam group includes frequency domain resources and / or time domain location information of a beam measurement reference signal of the beam group, location information of a resource for sending a measurement result of the beam group, and information related to a time domain interval between a beam measurement reference signal of the beam group and a resource for sending a measurement result of the beam group;

[0291] Frequency hopping information.

[0292] In one embodiment, the total number of uplink beams is M, and the beams included in the first beam group are (B 1 , B 2 , …, B M / 2 ), the beams included in the second beam group are (B M / 2+1 , …, B M );

[0293] The M beams have S beamwidth levels, S = log2(M); where the S beamwidth levels include 2 S beams, the first beam group includes the beams (B 1 , B 2 , …, B 2 S-1), the beams included in the second beam group are (B 2 S-1 +1 , …, B 2 S ), each beamwidth covers a continuous M / 2 S beams.

[0294] Taking into account that the capabilities of the first terminal may change, in order to ensure that the first information sent by the first network node to the first terminal is compatible with the capabilities of the first terminal, the terminal reports the capability information of the first terminal to the first network node, so that the first network node sends the first information according to the capability information reported by the first terminal.

[0295] Based on this, in one embodiment, the method further includes:

[0296] receiving capability information of the first terminal sent by the first terminal, wherein the capability information includes at least one of the following:

[0297] Type of capability;

[0298] Number of receiving antennas;

[0299] Number of transmit antennas;

[0300] Supported bandwidth;

[0301] Information processing capabilities;

[0302] Maximum supported data transfer rate;

[0303] The maximum supported upstream layer 2 cache capacity;

[0304] The maximum supported downstream layer 2 buffer capacity;

[0305] Whether the uplink and downlink scheduling function with extended time relationship is supported;

[0306] Number of HARQs supported;

[0307] Whether HARQ deactivation is supported;

[0308] Whether to support layer 2 time extension;

[0309] Handles RACH adaptation capability for setting RTT.

[0310] In order to implement the method on the first terminal side of the embodiment of the present application, the embodiment of the present application also provides a communication device, which is set on the first terminal, such as Figure 3 As shown, the device comprises:

[0311] The first processing unit 301 is configured to send second information to the first network node and / or the second terminal, or perform a first operation according to at least one of the first information, the network characteristic, and the capability information of the first terminal;

[0312] The second terminal represents a terminal that performs joint communication with the first terminal;

[0313] The first operation includes synchronization information reading and / or synchronization information measurement;

[0314] The first information includes at least one of the following:

[0315] the types of information that can be sent;

[0316] The maximum number of bytes of information that can be sent;

[0317] the priority of the types of information that can be sent;

[0318] A group RNTI, where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

[0319] In one embodiment, the device further comprises:

[0320] The second receiving unit is configured to receive first information sent by the first network node.

[0321] In one embodiment, the first information further includes at least one of the following:

[0322] First resource;

[0323] The RB corresponding to the first resource;

[0324] The LC corresponding to the first resource;

[0325] The HARQ process corresponding to the first resource;

[0326] The offset of the identifier of the HARQ process corresponding to the first resource; wherein,

[0327] The first resource represents a semi-static pre-configured resource used for the first terminal and the second terminal to jointly send data and / or jointly receive data, including at least one of the following:

[0328] preamble;

[0329] The period and duration of time-frequency domain resources;

[0330] MCS;

[0331] The size of TB;

[0332] Antenna configuration information;

[0333] DMRS;

[0334] Information of a beam group used to send uplink data; wherein the beam group includes a first beam group and a second beam group, the first beam group is used for the first terminal to send data, and the second beam group is used for the second terminal to send data; the information of the beam group includes frequency domain resources and / or time domain location information of a beam measurement reference signal of the beam group, location information of a resource for sending a measurement result of the beam group, and information related to a time domain interval between a beam measurement reference signal of the beam group and a resource for sending a measurement result of the beam group;

[0335] Frequency hopping information.

[0336] In one embodiment, the total number of uplink beams is M, and the beams included in the first beam group are (B 1 , B 2 , …, B M / 2 ), the beams included in the second beam group are (B M / 2+1 , …, B M );

[0337] The M beams have S beamwidth levels, S = log2(M); where the S beamwidth levels include 2 S beams, the first beam group includes the beams (B 1 , B 2 , …, B 2 S-1 ), the beams included in the second beam group are (B 2 S-1 +1 , …, B 2 S ), each beamwidth covers a continuous M / 2 S beams.

[0338] In one embodiment, the device further comprises:

[0339] A first sending unit is configured to send capability information of the first terminal to the first network node; wherein the capability information includes at least one of the following:

[0340] Type of capability;

[0341] Number of receiving antennas;

[0342] Number of transmit antennas;

[0343] Supported bandwidth;

[0344] Information processing capabilities;

[0345] Information processing time;

[0346] Maximum supported data transfer rate;

[0347] The maximum supported upstream layer 2 cache capacity;

[0348] The maximum supported downstream layer 2 buffer capacity;

[0349] Whether the uplink and downlink scheduling function with extended time relationship is supported;

[0350] Number of HARQs supported;

[0351] Whether HARQ deactivation is supported;

[0352] Whether to support layer 2 time extension;

[0353] Handles RACH adaptation capability for setting RTT.

[0354] In one embodiment, the first processing unit 301 is further configured to read NTN configuration information and / or GNSS location information when the first terminal receives a NAS indication from the AS; and / or

[0355] When the first terminal receives the NAS indication at the AS layer, it starts serving cell measurement and / or PDCCH monitoring.

[0356] In one embodiment, the first processing unit 301 is further configured to initiate a random access to the first network device on the first initial BWP; wherein:

[0357] The first initial BWP represents an initial BWP corresponding to a set capability type; information of the first initial BWP is carried in a system message of an NTN where the first network node is located; and the first network device represents a network device located in the NTN.

[0358] In one embodiment, the device further comprises:

[0359] The second sending unit is used to report the TA value of the first terminal to the first network device; wherein the TA value is determined based on the GNSS position information and ephemeris information of the first terminal; and the ephemeris information is carried in the system message.

[0360] In one embodiment, the first processing unit 301 is further configured to obtain the third information and / or the fourth information in the system message; wherein:

[0361] The third information represents the common DCI transmitted in the CSS;

[0362] The fourth information represents information in the MIB used to indicate a second resource, and the second resource represents a transmission resource of a CSS type that matches a set capability type.

[0363] In one embodiment, the system message further includes at least one of the following:

[0364] Group RNTI;

[0365] Semi-static resource of group RNTI;

[0366] The first condition represents a condition satisfied between terminals forming a group transmission.

[0367] In one embodiment, the first condition includes at least one of the following:

[0368] The distance between the terminals belongs to the first setting range;

[0369] The transmit power difference between the terminals belongs to the second set range;

[0370] There is a QCL relationship between the terminals.

[0371] In actual application, the first processing unit 301 can be implemented by a processor in a communication device in combination with a communication interface, and the second receiving unit, the first sending unit and the second sending unit can be implemented by a communication interface in a communication apparatus.

[0372] In order to implement the method on the first network node side of the embodiment of the present application, the embodiment of the present application also provides a communication device, which is set on the first network node, such as Figure 4 As shown, the device comprises:

[0373] The first receiving unit 401 is configured to receive second information sent by the first terminal; wherein:

[0374] The second information is determined according to at least one of the first information, network characteristics, and capability information of the first terminal; the first information includes at least one of the following:

[0375] the types of information that can be sent;

[0376] The maximum number of bytes of information that can be sent;

[0377] the priority of the types of information that can be sent;

[0378] A group RNTI, where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

[0379] In one embodiment, the device further comprises:

[0380] The third sending unit is used to send first information to the first terminal according to the height of the first network node and the capability information of the first terminal.

[0381] In one embodiment, the first information further includes at least one of the following:

[0382] First resource;

[0383] The RB corresponding to the first resource;

[0384] The LC corresponding to the first resource;

[0385] The HARQ process corresponding to the first resource;

[0386] The offset of the identifier of the HARQ process corresponding to the first resource; wherein,

[0387] The first resource represents a semi-static pre-configured resource used for the first terminal and the second terminal to jointly send data and / or jointly receive data, including at least one of the following:

[0388] preamble;

[0389] The period and duration of time-frequency domain resources;

[0390] MCS;

[0391] The size of TB;

[0392] Antenna configuration information;

[0393] DMRS;

[0394] Information of a beam group used to send uplink data; wherein the beam group includes a first beam group and a second beam group, the first beam group is used for the first terminal to send data, and the second beam group is used for the second terminal to send data; the information of the beam group includes frequency domain resources and / or time domain location information of a beam measurement reference signal of the beam group, location information of a resource for sending a measurement result of the beam group, and information related to a time domain interval between a beam measurement reference signal of the beam group and a resource for sending a measurement result of the beam group;

[0395] Frequency hopping information.

[0396] In one embodiment, the total number of uplink beams is M, and the beams included in the first beam group are (B 1 , B 2 , …, B M / 2 ), the beams included in the second beam group are (B M / 2+1 , …, B M );

[0397] The M beams have S beamwidth levels, S = log2(M); where the S beamwidth levels include 2 S beams, the first beam group includes the beams (B1 , B 2 , …, B 2 S-1 ), the beams included in the second beam group are (B 2 S-1 +1 , …, B 2 S ), each beamwidth covers a continuous M / 2 S beams.

[0398] In one embodiment, the device further comprises:

[0399] The third receiving unit is configured to receive capability information of the first terminal sent by the first terminal, wherein the capability information includes at least one of the following:

[0400] Type of capability;

[0401] Number of receiving antennas;

[0402] Number of transmit antennas;

[0403] Supported bandwidth;

[0404] Information processing capabilities;

[0405] Maximum supported data transfer rate;

[0406] The maximum supported upstream layer 2 cache capacity;

[0407] The maximum supported downstream layer 2 buffer capacity;

[0408] Whether the uplink and downlink scheduling function with extended time relationship is supported;

[0409] Number of HARQs supported;

[0410] Whether HARQ deactivation is supported;

[0411] Whether to support layer 2 time extension;

[0412] Handles RACH adaptation capability for setting RTT.

[0413] In actual application, the first receiving unit 401, the third sending unit and the third receiving unit can be implemented by a processor in a communication device in combination with a communication interface.

[0414] It should be noted that: the above embodiment provides that when the communication device is communicating, only the division of the above program modules is used as an example. In actual applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device is divided into different program modules to complete all or part of the above-described processing. In addition, the communication device and the communication method embodiment provided in the above embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0415] Based on the hardware implementation of the above program module, and in order to implement the method on the first terminal side of the embodiment of the present application, the embodiment of the present application also provides a first terminal, such as Figure 5 As shown, the first terminal 500 includes:

[0416] The first communication interface 501 can exchange information with other network nodes and / or other terminals.

[0417] The first processor 502 is connected to the first communication interface 501 to implement information exchange with other network nodes and / or other terminals, and is used to execute the method provided by one or more technical solutions on the first terminal side when running a computer program. The computer program is stored in the first memory 503.

[0418] Specifically, the first communication interface 501 is used to send second information to the first network node and / or the second terminal according to at least one of the first information, the network characteristics, and the capability information of the first terminal;

[0419] The first processor 502 is configured to perform a first operation according to at least one of the first information, the network characteristic, and the capability information of the first terminal;

[0420] The second terminal represents a terminal that performs joint communication with the first terminal;

[0421] The first operation includes synchronization information reading and / or synchronization information measurement;

[0422] The first information includes at least one of the following:

[0423] the types of information that can be sent;

[0424] The maximum number of bytes of information that can be sent;

[0425] the priority of the types of information that can be sent;

[0426] A group RNTI, where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

[0427] In one embodiment, the first communication interface 501 is further used to receive first information sent by the first network node.

[0428] In one embodiment, the first information further includes at least one of the following:

[0429] First resource;

[0430] The RB corresponding to the first resource;

[0431] The LC corresponding to the first resource;

[0432] The HARQ process corresponding to the first resource;

[0433] The offset of the identifier of the HARQ process corresponding to the first resource; wherein,

[0434] The first resource represents a semi-static pre-configured resource used for the first terminal and the second terminal to jointly send data and / or jointly receive data, including at least one of the following:

[0435] preamble;

[0436] The period and duration of time-frequency domain resources;

[0437] MCS;

[0438] The size of TB;

[0439] Antenna configuration information;

[0440] DMRS;

[0441] Information of a beam group used to send uplink data; wherein the beam group includes a first beam group and a second beam group, the first beam group is used for the first terminal to send data, and the second beam group is used for the second terminal to send data; the information of the beam group includes frequency domain resources and / or time domain location information of a beam measurement reference signal of the beam group, location information of a resource for sending a measurement result of the beam group, and information related to a time domain interval between a beam measurement reference signal of the beam group and a resource for sending a measurement result of the beam group;

[0442] Frequency hopping information.

[0443] In one embodiment, the total number of uplink beams is M, and the beams included in the first beam group are (B 1 , B 2 , …, B M / 2 ), the beams included in the second beam group are (B M / 2+1 , …, B M );

[0444] The M beams have S beamwidth levels, S = log2(M); where the S beamwidth levels include 2 S beams, the first beam group includes the beams (B 1 , B 2 , …, B 2 S-1 ), the beams included in the second beam group are (B 2 S-1 +1 , …, B 2 S ), each beamwidth covers a continuous M / 2 S beams.

[0445] In one embodiment, the first communication interface 501 is further used to send capability information of the first terminal to the first network node; wherein the capability information includes at least one of the following:

[0446] Type of capability;

[0447] Number of receiving antennas;

[0448] Number of transmit antennas;

[0449] Supported bandwidth;

[0450] Information processing capabilities;

[0451] Information processing time;

[0452] Maximum supported data transfer rate;

[0453] The maximum supported upstream layer 2 cache capacity;

[0454] The maximum supported downstream layer 2 buffer capacity;

[0455] Whether the uplink and downlink scheduling function with extended time relationship is supported;

[0456] Number of HARQs supported;

[0457] Whether HARQ deactivation is supported;

[0458] Whether to support layer 2 time extension;

[0459] Handles RACH adaptation capability for setting RTT.

[0460] In one embodiment, the first processor 502 is further configured to read NTN configuration information and / or GNSS location information when the first terminal receives a NAS indication from the AS; and / or

[0461] When the first terminal receives the NAS indication at the AS layer, it starts serving cell measurement and / or PDCCH monitoring.

[0462] In one embodiment, the first processor 502 is further configured to initiate a random access to the first network device on the first initial BWP; wherein,

[0463] The first initial BWP represents an initial BWP corresponding to a set capability type; information of the first initial BWP is carried in a system message of an NTN where the first network node is located; and the first network device represents a network device located in the NTN.

[0464] In one embodiment, the first communication interface 501 is further used to report the TA value of the first terminal to the first network device; wherein the TA value is determined based on the GNSS position information and ephemeris information of the first terminal; and the ephemeris information is carried in the system message.

[0465] In one embodiment, the first processor 502 is further configured to obtain the third information and / or the fourth information in the system message; wherein:

[0466] The third information represents the common DCI transmitted in the CSS;

[0467] The fourth information represents information in the MIB used to indicate a second resource, and the second resource represents a transmission resource of a CSS type that matches a set capability type.

[0468] In one embodiment, the system message further includes at least one of the following:

[0469] Group RNTI;

[0470] Semi-static resource of group RNTI;

[0471] The first condition represents a condition satisfied between terminals forming a group transmission.

[0472] In one embodiment, the first condition includes at least one of the following:

[0473] The distance between the terminals belongs to the first setting range;

[0474] The transmit power difference between the terminals belongs to the second set range;

[0475] There is a QCL relationship between the terminals.

[0476] It should be noted that the specific processing process of the first processor 502 and the first communication interface 501 can be understood by referring to the above method.

[0477] Of course, in actual application, the various components in the first terminal 500 are coupled together through the bus system 504. It can be understood that the bus system 504 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 504 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, Figure 5 Various buses are labeled as bus system 504 .

[0478] The first memory 503 in the embodiment of the present application is used to store various types of data to support the operation of the first terminal 500. Examples of such data include: any computer program used to operate on the first terminal 500.

[0479] The method disclosed in the above embodiment of the present application can be applied to the first processor 502, or implemented by the first processor 502. The first processor 502 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the first processor 502. The above-mentioned first processor 502 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The first processor 502 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, which is located in the first memory 503, and the first processor 502 reads the information in the first memory 503 and completes the steps of the above method in combination with its hardware.

[0480] In an exemplary embodiment, the first terminal 500 can be implemented by one or more application-specific integrated circuits (ASIC), DSP, programmable logic device (PLD), complex programmable logic device (CPLD), field-programmable gate array (FPGA), general-purpose processor, controller, microcontroller (MCU), microprocessor, or other electronic components to execute the aforementioned method.

[0481] Based on the hardware implementation of the above program module, and in order to implement the method on the first network node side of the embodiment of the present application, the embodiment of the present application also provides a first network node, such as Figure 6 As shown, the first network node 600 includes:

[0482] The second communication interface 601 is capable of exchanging information with other network nodes;

[0483] The second processor 602 is connected to the second communication interface 601 to implement information interaction with other network nodes and / or other terminals, and is used to execute the method provided by one or more technical solutions of the first network node side when running a computer program. The computer program is stored in the second memory 603.

[0484] Specifically, the second communication interface 601 is used to receive second information sent by the first terminal;

[0485] The second information is determined according to at least one of the first information, network characteristics, and capability information of the first terminal; and the first information includes at least one of the following:

[0486] the types of information that can be sent;

[0487] The maximum number of bytes of information that can be sent;

[0488] the priority of the types of information that can be sent;

[0489] A group RNTI, where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

[0490] In one embodiment, the second communication interface 601 is further used to send first information to the first terminal according to the height of the first network node and the capability information of the first terminal.

[0491] In one embodiment, the first information further includes at least one of the following:

[0492] First resource;

[0493] The RB corresponding to the first resource;

[0494] The LC corresponding to the first resource;

[0495] The HARQ process corresponding to the first resource;

[0496] The offset of the identifier of the HARQ process corresponding to the first resource; wherein,

[0497] The first resource represents a semi-static pre-configured resource used for the first terminal and the second terminal to jointly send data and / or jointly receive data, including at least one of the following:

[0498] preamble;

[0499] The period and duration of time-frequency domain resources;

[0500] MCS;

[0501] The size of TB;

[0502] Antenna configuration information;

[0503] DMRS;

[0504] Information of a beam group used to send uplink data; wherein the beam group includes a first beam group and a second beam group, the first beam group is used for the first terminal to send data, and the second beam group is used for the second terminal to send data; the information of the beam group includes frequency domain resources and / or time domain location information of a beam measurement reference signal of the beam group, location information of a resource for sending a measurement result of the beam group, and information related to a time domain interval between a beam measurement reference signal of the beam group and a resource for sending a measurement result of the beam group;

[0505] Frequency hopping information.

[0506] In one embodiment, the total number of uplink beams is M, and the beams included in the first beam group are (B 1 , B 2 , …, B M / 2 ), the beams included in the second beam group are (B M / 2+1 , …, B M );

[0507] The M beams have S beamwidth levels, S = log2(M); where the S beamwidth levels include 2 S beams, the first beam group includes the beams (B 1 , B 2 , …, B 2 S-1 ), the beams included in the second beam group are (B 2 S-1 +1 , …, B 2 S ), each beamwidth covers a continuous M / 2 S beams.

[0508] In one embodiment, the second communication interface 601 is further used to receive capability information of the first terminal sent by the first terminal; wherein the capability information includes at least one of the following:

[0509] Type of capability;

[0510] Number of receiving antennas;

[0511] Number of transmit antennas;

[0512] Supported bandwidth;

[0513] Information processing capabilities;

[0514] Maximum supported data transfer rate;

[0515] The maximum supported upstream layer 2 cache capacity;

[0516] The maximum supported downstream layer 2 buffer capacity;

[0517] Whether the uplink and downlink scheduling function with extended time relationship is supported;

[0518] Number of HARQs supported;

[0519] Whether HARQ deactivation is supported;

[0520] Whether to support layer 2 time extension;

[0521] Handles RACH adaptation capability for setting RTT.

[0522] It should be noted that the specific processing process of the second processor 602 and the second communication interface 601 can be understood by referring to the above method.

[0523] Of course, in actual application, the various components in the first network node 600 are coupled together through the bus system 604. It can be understood that the bus system 604 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 604 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, Figure 6 The various buses are collectively labeled bus system 604 .

[0524] The second memory 603 in the embodiment of the present application is used to store various types of data to support the operation of the first network node 600. Examples of such data include: any computer program used to operate on the first network node 600.

[0525] The method disclosed in the above embodiment of the present application can be applied to the second processor 602, or implemented by the second processor 602. The second processor 602 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the second processor 602. The above-mentioned second processor 602 may be a general-purpose processor, DSP, or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The second processor 602 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium, which is located in the second memory 603. The second processor 602 reads the information in the second memory 603 and completes the steps of the above method in combination with its hardware.

[0526] In an exemplary embodiment, the first network node 600 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general purpose processors, controllers, MCUs, Microprocessors, or other electronic components to perform the aforementioned method.

[0527] It can be understood that the memory (first memory 503, second memory 603) of the embodiment of the present application can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a ferromagnetic random access memory, a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM).The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0528] In an exemplary embodiment, the embodiment of the present application further provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium, for example, including a first memory 503 storing a computer program, and the computer program can be executed by the first processor 502 of the first terminal 500 to complete the steps of the aforementioned first terminal side method. For another example, a second memory 603 storing a computer program can be executed by the second processor 602 of the first network node 600 to complete the steps of the aforementioned first network node side method. The computer-readable storage medium can be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, or CD-ROM.

[0529] It should be noted that: "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0530] The term "and / or" herein is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set consisting of A, B, and C.

[0531] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0532] The above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application.

Claims

1. A communication method, characterized in that: Applied to a first terminal, the method includes: According to at least one of the first information, the network characteristics, and the capability information of the first terminal, second information is sent to the first network node and / or the second terminal, or a first operation is performed; wherein, The second terminal represents a terminal that performs joint communication with the first terminal; The first operation includes synchronization information reading and / or synchronization information measurement; The first information includes at least one of the following: the types of information that can be sent; The maximum number of bytes of information that can be sent; the priority of the types of information that can be sent; A group radio network temporary identifier RNTI, where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

2. The method according to claim 1, characterized in that: Before sending the second information to the first network node and / or the second terminal according to the first information or performing the first operation, the method further includes: Receive first information sent by the first network node.

3. The method according to claim 1, characterized in that The first information also includes at least one of the following: First resource; A radio bearer RB corresponding to the first resource; A logical channel LC corresponding to the first resource; A hybrid automatic repeat request HARQ process corresponding to the first resource; The offset of the identifier of the HARQ process corresponding to the first resource; wherein, The first resource represents a semi-static pre-configured resource used for the first terminal and the second terminal to jointly send data and / or jointly receive data, including at least one of the following: Preamble: The period and duration of time-frequency resources; Modulation and coding strategy MCS; The size of the transport block TB; Antenna configuration information; Demodulation reference signal DMRS; Information of a beam group used to send uplink data; wherein the beam group includes a first beam group and a second beam group, the first beam group is used for the first terminal to send data, and the second beam group is used for the second terminal to send data; the information of the beam group includes frequency domain resources and / or time domain location information of a beam measurement reference signal of the beam group, location information of a resource for sending a measurement result of the beam group, and information related to a time domain interval between a beam measurement reference signal of the beam group and a resource for sending a measurement result of the beam group; Frequency hopping information.

4. The method according to claim 3, characterized in that The total number of uplink beams is M, and the first beam group includes beams (B1, B2, ..., B M / 2 ), the beams included in the second beam group are (B M / 2+1 , …, B M ); The M beams have S beamwidth levels, S = log2(M); where the S beamwidth levels include 2 S beams, the first beam group includes the beams (B1, B2, ..., B2 S-1 ), the beams included in the second beam group are (B2 S-1 +1 , …, B2 S ), each beamwidth covers a continuous M / 2 S beams.

5. The method according to claim 2, characterized in that: The method further comprises: Sending capability information of the first terminal to the first network node; wherein the capability information includes at least one of the following: Type of capability; Number of receiving antennas; Number of transmit antennas; Supported bandwidth; Information processing capabilities; Information processing time; Maximum supported data transfer rate; The maximum supported upstream layer 2 cache capacity; The maximum supported downstream layer 2 buffer capacity; Whether the uplink and downlink scheduling function with extended time relationship is supported; Number of HARQs supported; Whether HARQ deactivation is supported; Whether to support layer 2 time extension; Handles the random access channel RACH adaptation capability for setting the round trip time RTT.

6. The method according to claim 1, characterized in that The method further comprises at least one of the following: When the first terminal receives a non-access stratum NAS indication at the access stratum AS, reading non-terrestrial network NTN configuration information and / or global navigation satellite system GNSS position information; When the first terminal receives the NAS indication at the AS layer, it starts serving cell measurement and / or physical downlink control channel PDCCH monitoring.

7. The method according to any one of claims 1 to 6, characterized in that: The method further comprises: Initiate random access to the first network device on the first initial partial bandwidth BWP; wherein, The first initial BWP represents an initial BWP corresponding to a set capability type; information of the first initial BWP is carried in a system message of an NTN where the first network node is located; and the first network device represents a network device located in the NTN.

8. The method according to claim 7, characterized in that Before initiating random access to the first network device on the first initial BWP, the method further includes: Reporting the timing advance TA value of the first terminal to the first network device; wherein, The TA value is determined based on the GNSS position information and ephemeris information of the first terminal; the ephemeris information is carried in the system message.

9. The method according to claim 7, characterized in that: Before initiating random access to the first network device on the first initial BWP, the method further includes: In the system message, third information and / or fourth information is obtained; wherein, The third information represents common downlink control information DCI transmitted in the common search space CSS; The fourth information represents information in the master information block MIB for indicating a second resource, and the second resource represents a transmission resource of a CSS type that matches a set capability type.

10. The method according to claim 7, characterized in that The system message also includes at least one of the following: Group RNTI; Semi-static resource of group RNTI; The first condition represents a condition satisfied between terminals forming a group transmission.

11. The method according to claim 10, characterized in that The first condition includes at least one of the following: The distance between the terminals belongs to the first setting range; The transmit power difference between the terminals belongs to the second set range; There is a quasi-co-site QCL relationship between the terminals.

12. A communication method, characterized in that: Applied to a first network node, the method comprises: receiving second information sent by the first terminal; wherein, The second information is determined according to at least one of the first information, network characteristics, and capability information of the first terminal; the first information includes at least one of the following: the types of information that can be sent; The maximum number of bytes of information that can be sent; the priority of the types of information that can be sent; A group RNTI, where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

13. The method according to claim 12, characterized in that Before receiving the second information sent by the first terminal, the method further includes: First information is sent to the first terminal according to the height of the first network node and the capability information of the first terminal.

14. The method according to claim 12, characterized in that The first information also includes at least one of the following: First resource; The RB corresponding to the first resource; The LC corresponding to the first resource; The HARQ process corresponding to the first resource; The offset of the identifier of the HARQ process corresponding to the first resource; wherein, The first resource represents a semi-static pre-configured resource used for the first terminal and the second terminal to jointly send data and / or jointly receive data, including at least one of the following: preamble; The period and duration of time-frequency resources; MCS; The size of TB; Antenna configuration information; DMRS; Information of a beam group used to send uplink data; wherein the beam group includes a first beam group and a second beam group, the first beam group is used for the first terminal to send data, and the second beam group is used for the second terminal to send data; the information of the beam group includes frequency domain resources and / or time domain location information of a beam measurement reference signal of the beam group, location information of a resource for sending a measurement result of the beam group, and information related to a time domain interval between a beam measurement reference signal of the beam group and a resource for sending a measurement result of the beam group; Frequency hopping information.

15. The method according to claim 12, characterized in that The method further comprises: receiving capability information of the first terminal sent by the first terminal, wherein the capability information includes at least one of the following: Type of capability; Number of receiving antennas; Number of transmit antennas; Supported bandwidth; Information processing capabilities; Maximum supported data transfer rate; The maximum supported upstream layer 2 cache capacity; The maximum supported downstream layer 2 buffer capacity; Whether the uplink and downlink scheduling function with extended time relationship is supported; Number of HARQs supported; Whether HARQ deactivation is supported; Whether to support layer 2 time extension; Handles RACH adaptation capability for setting RTT.

16. A communication device, characterized in that: include: A first processing unit, configured to send second information to the first network node and / or the second terminal, or perform a first operation according to at least one of the first information, the network characteristic, and the capability information of the first terminal; The second terminal represents a terminal that performs joint communication with the first terminal; The first operation includes synchronization information reading and / or synchronization information measurement; The first information includes at least one of the following: the types of information that can be sent; The maximum number of bytes of information that can be sent; the priority of the types of information that can be sent; A group RNTI, where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

17. A communication device, characterized in that: include: The first receiving unit is used to receive the second information sent by the first terminal; wherein, The second information is determined according to at least one of the first information, network characteristics, and capability information of the first terminal; the first information includes at least one of the following: the types of information that can be sent; The maximum number of bytes of information that can be sent; the priority of the types of information that can be sent; A group RNTI, where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

18. A first terminal, characterized in that: comprising a first processor and a first communication interface, wherein: The first processor is configured to send second information to the first network node and / or the second terminal, or perform a first operation according to at least one of the first information, the network characteristics, and the capability information of the first terminal; wherein, The second terminal represents a terminal that performs joint communication with the first terminal; The first operation includes synchronization information reading and / or synchronization information measurement; The first information includes at least one of the following: the types of information that can be sent; The maximum number of bytes of information that can be sent; the priority of the types of information that can be sent; A group RNTI, where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

19. A first network node, characterized in that: comprising a second processor and a second communication interface, wherein: The second communication interface is used to receive second information sent by the first terminal; wherein, The second information is determined according to at least one of the first information, network characteristics, and capability information of the first terminal; the first information includes at least one of the following: the types of information that can be sent; The maximum number of bytes of information that can be sent; the priority of the types of information that can be sent; A group RNTI, where the group RNTI represents an RNTI for the first terminal and the second terminal to jointly send data and / or jointly receive data.

20. A first terminal, characterized in that: comprising a first processor and a first memory for storing a computer program capable of being executed on the first processor, Wherein, when the first processor is used to run the computer program, the steps of the method described in any one of claims 1 to 11 are executed.

21. A first network node, characterized in that: comprising a second processor and a second memory for storing a computer program executable on the second processor, Wherein, when the second processor is used to run the computer program, the steps of the method described in any one of claims 12 to 15 are executed.

22. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 11 are implemented, or the steps of the method according to any one of claims 12 to 15 are implemented.

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