Data transmission method, device and computer readable storage medium

Abstract

This article discloses a data transmission method, device and computer-readable storage medium. The method includes: a first communication node receives first information sent by a second communication node, and the first information includes configuration information of transmission resources.

Description

Technical Field

[0001] The present application relates to a wireless communication network, for example, to a data transmission method, device and computer-readable storage medium. Background Art

[0002] With the continuous development of communication technology, the current Internet of Things standard can efficiently support Mobile Originated Early Data Transmission (MO-EDT), but there is no perfect data transmission solution for Mobile Terminated Early Data Transmission (MT-EDT). Summary of the invention

[0003] The present application provides a data transmission method, device and computer-readable storage medium, which can optimize the signaling process of MT-EDT, reduce signaling overhead, and ensure the security and efficiency of data transmission.

[0004] The present application provides a data transmission method, including:

[0005] The first communication node receives first information sent by the second communication node, where the first information includes configuration information of transmission resources.

[0006] The present application provides a data transmission method, including:

[0007] The second communication node sends first information to the first communication node, where the first information includes configuration information of transmission resources.

[0008] The present application provides a data transmission method, including:

[0009] The first communication node receives a third air interface transmission (message 2) sent by the second communication node, the third air interface transmission including at least one of the following features: the third air interface transmission includes downlink data, and the third air interface transmission indicates that the first communication node sends high-volume uplink data to the second communication node;

[0010] The first communication node sends a fourth air interface transmission (message 3) to the second communication node according to the third air interface transmission, and the fourth air interface transmission triggers a radio resource control RRC connection between the second communication node and the first communication node.

[0011] The present application provides a data transmission method, including:

[0012] The second communication node sends a third air interface transmission (message 2) to the first communication node, the third air interface transmission including at least one of the following features: the third air interface transmission includes downlink data, the third air interface transmission instructs the first communication node to send high-volume uplink data to the second communication node;

[0013] The second communication node receives the fourth air interface transmission (message 3) sent by the first communication node, and the fourth air interface transmission triggers the radio resource control RRC connection between the second communication node and the first communication node.

[0014] An embodiment of the present application provides a data transmission device, including: a processor, and the processor is used to implement the method of any of the above embodiments when executing a computer program.

[0015] An embodiment of the present application further provides a computer-readable storage medium storing a computer program, which implements the method of any of the above embodiments when the computer program is executed by a processor.

[0016] With regard to the above embodiments and other aspects of the present application and their implementation, further description is provided in the accompanying drawings, detailed description and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the basic flow of MT-EDT provided by an embodiment;

[0018] Figure 2 A flowchart of a data transmission method provided by an embodiment

[0019] Figure 3 A schematic diagram of a flow chart of another data transmission method provided by an embodiment;

[0020] Figure 4 A flowchart of another data transmission method provided by an embodiment;

[0021] Figure 5 A flowchart of another data transmission method provided by an embodiment;

[0022] Figure 6 A flowchart of another data transmission method provided by an embodiment;

[0023] Figure 7 A schematic diagram of a process flow of a terminal-triggered MT-EDT rollback process provided by an embodiment;

[0024] Figure 8 A flowchart of another terminal-triggered MT-EDT fallback process provided by an embodiment;

[0025] Fig. 9 A schematic diagram of the structure of a data transmission device provided by an embodiment;

[0026] Fig.10 A schematic diagram of the structure of another data transmission device provided by an embodiment;

[0027] Fig.11 A schematic diagram of the structure of another data transmission device provided by an embodiment;

[0028] Fig.12 A schematic diagram of the structure of another data transmission device provided by an embodiment;

[0029] Fig.13 A schematic diagram of the structure of a UE provided by an embodiment;

[0030] Fig.14 A schematic diagram of the structure of a base station provided by an embodiment. DETAILED DESCRIPTION

[0031] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0032] In the Release (Rel-) 15 IoT standards (such as Narrow Band Internet of Things (NB-IoT), enhanced Machine Type Communication (eMTC), etc.), efficient uplink small data packet transmission (such as MO-EDT) is currently supported. That is, the terminal can directly encapsulate the uplink small data in the uplink signaling of the random access process and send it to the network. The data transmission is considered successful when the terminal and the network complete the conflict resolution. There is no need to establish a wireless connection between the terminal and the network, and the terminal always maintains an idle state.

[0033] In the Rel-16 IoT standard, the introduction of a new MT-EDT function is being discussed. This function is mainly aimed at IoT applications or services that mainly transmit downlink small data packets. Figure 1 FIG. 2 shows a basic flow chart of MT-EDT provided by an embodiment. Figure 1 As shown in the figure, the basic process of MT-EDT mainly includes the following steps:

[0034] Step 1, (when the terminal is in the RRC_idle state (the terminal will enter the RRC_idle state after the inactivity timer expires)) the base station (such as Figure 1 The evolved Node B (evolutional NodeB, eNB) shown in FIG. 1 receives a core network device (such as Figure 1The Mobility Management Entity (MME) shown in FIG. 1 determines that the MT-EDT process needs to be triggered after receiving a paging message (S1Paging) sent by a serving gateway (S-GW) based on a data notification triggered paging message. The base station sends a message to the terminal (such as Figure 1 The user equipment (UE) shown sends the first air interface transmission (i.e., paging message), which carries terminal-specific (i.e., non-competitive) random access resources and relevant information of the terminal-specific radio network temporary identification (Radio Network Temporary Identity, RNTI) for identifying the terminal's uplink and downlink transmissions.

[0035] Step 2: The terminal obtains the non-contention random access resource according to the related information of the non-contention random access resource, and sends the second air interface transmission to the base station, that is, uses the non-contention random access resource to send the random access prefix, which can minimize the conflict between terminals.

[0036] Step 3: After receiving the random access prefix sent by the terminal on the non-competitive random access resource, the base station triggers the relevant process to request the downlink data (DL Data) of the terminal from the core network, and then the base station sends the third transmission of the air interface (i.e., the downlink transmission containing the downlink data) to the terminal, and the downlink transmission is scrambled with the terminal-specific RNTI. The downlink transmission may further include updated timing advance information for the terminal.

[0037] Step 4: After receiving the downlink data, the terminal sends the fourth air interface transmission (i.e., the uplink transmission scrambled with the terminal-specific RNTI) to the base station. The uplink transmission may include an uplink physical layer confirmation of the terminal for the received downlink data, or a media access control (MAC) layer confirmation, or a radio resource control (RRC) layer confirmation, or an application layer confirmation.

[0038] However, in the above Figure 1 There are five main problems in the basic process of MT-EDT shown:

[0039] Question 1

[0040] In the first transmission of the air interface, a paging message usually contains paging records for multiple terminals. If the paging record for a terminal needs to carry complete non-contention random access resource related information and terminal-specific RNTI related information, it will take up dozens of bits or even more, which will reduce the paging records that can be accommodated in the paging message, and further reduce the paging capacity.

[0041] Some common solutions that can be used to optimize the information carried in paging records include:

[0042] Solution 1-1: For eMTC terminals, a dedicated offset of a fixed length (e.g., 3-4 bits) allocated by the base station for the access prefix in the non-competitive random access resources is carried in the paging message. The terminal superimposes this dedicated offset on the largest competitive random access prefix to obtain a dedicated non-competitive random access prefix, that is, CF preamble = numberOfRA-Preambles + preamble index. The value range of the dedicated offset determines the maximum number of non-competitive random accesses that can be supported. The base station can try to ensure that different dedicated offsets are allocated to different terminals that use the MT-EDT function at the same time, and ensure that the non-competitive random access prefix calculated by the terminal does not conflict with the random access prefix of the terminal that uses the non-competitive random access resources due to other functions (such as non-competitive random access triggered by the physical downlink control channel order (PDCCH order));

[0043] Solution 1-2: For eMTC terminals, in order to further save the 3-4 bits of dedicated offset carried in the paging message, the terminal can also calculate the dedicated offset for the access prefix in the non-competitive random access resource by itself, for example, using the terminal identifier (UE_ID) modulo the maximum number of dedicated offsets, that is, CF preamble = numberOfRA-Preambles + UE_ID mod (64-numberOfRA-Preambles). However, the problem with this solution is that different terminals using the MT-EDT function at the same time may obtain the same dedicated offset modulo, resulting in unexpected conflicts, and the dedicated offset calculated by the terminal itself cannot guarantee that the final random access prefix does not conflict with the random access prefix of the terminal that uses the non-competitive random access resource due to other functions (such as non-competitive random access triggered by PDCCH order);

[0044] Considering the problems of solution 1-2, solution 1-1 can be used preferentially. However, because the non-competitive random access prefix is ​​shared among multiple functions, it is difficult for a fixed-length offset to take into account both the requirements of avoiding conflicts between terminals using this function and avoiding conflicts between this function and terminals with other functions. Generally speaking, in order to reduce conflicts between terminals using this function, it is hoped that the length or value range of the offset is as large as possible, but this will result in less offset available for other functions, and if there are fewer terminals using this function, there may be a waste of resources, and carrying a fixed-length dedicated offset in the paging message will also cause unnecessary signaling overhead.

[0045] In addition, the aforementioned common solution 1-1 is mainly used to optimize the signaling overhead of the first transmission of the air interface when the eMTC terminal uses the MT-EDT function. For the NB-IoT system configured with multiple carriers, referring to the non-competitive random access function triggered by the PDCCH order, it can be seen that its non-competitive random access resources must also include the initial carrier sequence number assigned by the base station and the initial subcarrier sequence number on the carrier. If the carrier sequence number (4 bits) and subcarrier sequence number (6 bits) are included in the non-competitive random access resource related information of the paging signaling, there will be a 10-bit overhead. At present, no solution has been proposed to optimize this overhead.

[0046] Question 2

[0047] In the first transmission of the air interface, the base station will carry terminal-specific (i.e., non-competitive) random access resources and related information of the terminal-specific RNTI used to identify the terminal's uplink and downlink transmissions in the paging message. We know that for eMTC and NB-IoT systems, their random access resources are configured according to the coverage level (or the number of transmission repetitions), that is, different coverage levels will correspond to different random access resources. Since the base station cannot accurately know the coverage level of the idle terminal, the base station is likely to select the random access resource corresponding to the maximum coverage level or the coverage level used when the terminal last released the connection and put it in the paging message to send to the terminal. If the terminal moves to an area with very good coverage conditions or an area where the coverage conditions have changed compared to the last time the connection was released, the terminal's use of the random access resource is likely to be wasted.

[0048] A common optimization method for the above problem is that the base station configures multiple sets of dedicated random access resources for the terminal, so that the terminal can select the most appropriate resource according to the actual coverage situation, and the base station obtains the resources actually used by the terminal through blind detection. However, considering that carrying multiple sets of random access resources in the paging message will cause greater signaling overhead, and the coverage level of a stationary terminal usually does not change, providing two or more sets of random access resources for different coverage levels will cause resource waste and unnecessary signaling overhead in some scenarios.

[0049] Question 3

[0050] In the above basic process of MT-EDT, after the base station receives the random access prefix sent by the terminal on the non-competitive random access resource, it triggers the relevant process to request the downlink data of the terminal from the core network, and then the base station sends the third transmission of the air interface to the terminal, that is, the downlink transmission containing the downlink data. The terminal receives the third transmission of the air interface after sending the random access prefix, which is similar to the receiving of the random access response message (RAR) after the terminal sends the random access prefix in the traditional random access process, but there are the following differences:

[0051] The terminal starts to monitor RAR at a short interval (a fixed number of subframes, such as 3 subframes) after sending the random access prefix. However, for the MT-EDT function, since the base station needs to obtain data from the core network before sending the third transmission of the air interface, if the terminal moves to a new cell after the last connection is released, the terminal sends the random access prefix at the new base station. The above data acquisition process may also include the process of the new base station obtaining the terminal context from the old base station, resulting in further delays in the base station sending the third transmission of the air interface. In order to avoid power consumption caused by unnecessary monitoring, it is best to wait for a while before starting to monitor the third transmission of the air interface after the terminal sends the random access prefix.

[0052] In addition, in the traditional random access process, since the RAR message is short, and in order to avoid conflicts between multiple terminals that monitor the RAR message scrambled by the Random Access-Radio Network Temporary Identifier (RA-RNTI), the terminal needs to receive the RAR message within a certain length of the RAR message receiving window (RAR window). In the MT-EDT function, the third transmission of the air interface contains downlink data and is likely to be much larger than the RAR message. Therefore, the original RAR message monitoring window is no longer applicable to the terminal's reception of the third transmission of the air interface.

[0053] A common optimization method for the above problem is to configure an extended RAR response receiving window for the terminal to determine the duration required to receive the third transmission of the air interface, and to configure a new offset relative to the end of the second transmission of the air interface to determine the starting position of receiving the third transmission of the air interface. Usually, these extended receiving windows and offsets should be configured through broadcast signaling. However, considering the changes in the terminal status, a fixed set of extended receiving windows and offset configurations cannot meet the needs of different scenarios.

[0054] Question 4

[0055] In the above basic process of MT-EDT, after the base station receives the random access prefix sent by the terminal on the non-competitive random access resource, it triggers the relevant process to request the downlink data of the terminal from the core network, and then the base station sends the third transmission of the air interface to the terminal, that is, the downlink transmission containing the downlink data. After receiving the downlink data, the terminal passes it to its application layer, and the application layer may notify the terminal that it needs to pass uplink data as a confirmation or response to the received downlink data. For example, in some applications, the downlink data may be a network command, which triggers the terminal to report the stored operation data, abnormality report and other information, which may be large.

[0056] Generally, the network may include an uplink grant in the third transmission of the air interface so that the terminal directly includes a small amount of data in the fourth transmission of the air interface, or sends a buffer status report to apply for a larger uplink grant. However, in the scenario where the aforementioned terminal may have a large amount of uplink data as a response to the received downlink data, the efficiency of adopting the above method is low.

[0057] The existing MO-EDT standard also supports the network side to decide whether to roll back the MO-EDT process to the normal connection establishment process based on whether the terminal reports the release of auxiliary information (i.e., indicating whether the terminal has cached uplink data to be sent) and whether the network side has cached data, that is, the network side controls the terminal to be transferred to the connected state and transmits more service data in the connected state. In this process, the terminal usually sends the access stratum (AccessStratum, AS) layer or non-access stratum (Non-Access Stratum, NAS) layer to the network along with the first uplink RRC message to release auxiliary information, and the network can use the first downlink RRC message to roll back the terminal to the connected state. Similar solutions are also mentioned in the existing discussions on MT-EDT. If the network learns that there is more downlink data to be sent to the terminal before sending the third transmission of the air interface, the network side can send a downlink RRC message to roll back the terminal to the connected state when sending the third transmission of the air interface. However, this process cannot be applied to the situation where the aforementioned terminal further finds that there is a large amount of uplink data to be transmitted after receiving the third transmission of the air interface.

[0058] Question 5

[0059] In the above basic process of MT-EDT, all terminals can receive the first transmission of the air interface, parse the paging message and the paging record it contains. There may be malicious pseudo-terminals here, which use the dedicated random access resource related information provided in the paging record for the target terminal to send a dedicated random access prefix to the base station. After receiving the random access prefix, the base station cannot identify whether it comes from the real target terminal. The base station will estimate the uplink timing advance (Timing Advance, TA) based on the received random access prefix, obtain the downlink service data for the terminal from the core network, and include these contents in the second transmission of the air interface and send them to the terminal.

[0060] Furthermore, for the UP (user plane CIoT EPS optimization) solution, the base station will obtain the terminal's security key and perform AS layer encryption on the downlink service data. The above-mentioned second transmission of the air interface can still be received by the pseudo terminal, but the service data therein is encrypted at the NAS layer (for the CP (control plane CIoT EPS optimization) solution) or the AS layer, and the pseudo terminal cannot parse it. Due to the existence of the above-mentioned pseudo terminal, if the terminal is only required to send a physical layer or MAC layer confirmation after receiving the second transmission of the air interface, although the pseudo terminal cannot parse the downlink service data, it can still forge an uplink confirmation, causing the base station or the core network to mistakenly determine that the data has been received by the target terminal.

[0061] In order to ensure that the base station and the core network can accurately determine whether the service data is delivered to the target terminal, some common optimization solutions include: for the CP solution, the terminal should send an uplink NAS protocol data unit (PDU) (including NAS signaling or NAS data) to verify the terminal confirmation at the NAS layer, and for the UP solution, the terminal should send an encrypted uplink RRC signaling to verify the terminal confirmation at the AS layer. However, the problem with the above solution is that for the CP solution, it may be necessary to define new NAS signaling, and for the UP solution, the uplink RRC signaling may require further downlink RRC signaling to confirm, resulting in unnecessary signaling load, which further reduces the advantages of this solution over the traditional data transmission solution.

[0062] The embodiments of the present application provide a mobile communication network (including but not limited to the fifth generation mobile communication network (5th-Generation, 5G)), the network architecture of which may include network-side devices (such as one or more types of base stations, transmission nodes, access nodes (AP, Access Point), relays, Node B (Node B, NB), terrestrial radio access (UTRA, Universal Terrestrial Radio Access), evolved terrestrial radio access (EUTRA, Evolved Universal Terrestrial Radio Access), etc.) and terminals (user equipment (User Equipment, UE), user equipment data card, relay, mobile device, etc.). In the embodiments of the present application, a data transmission method, device and computer-readable storage medium that can be run on the above-mentioned network architecture are provided, which can optimize the signaling process of MT-EDT, reduce signaling overhead, and ensure the security and efficiency of data transmission.

[0063] The data transmission method, device and technical effects thereof are described below.

[0064] Figure 2 A schematic diagram of a data transmission method provided by an embodiment is shown. Figure 2 As shown, the method provided in this embodiment is applicable to a first communication node, which may be a terminal (such as UE, mobile device, etc.), and the method includes the following steps.

[0065] S110. The first communication node receives first information sent by the second communication node, where the first information includes configuration information of transmission resources.

[0066] The configuration information of the transmission resource includes at least one of the following information:

[0067] Offset configuration information for dedicated resources;

[0068] Frequency domain resource information of non-contention random access resources;

[0069] Monitoring the mapping relationship between the resources of the first transmission of the air interface and the non-contention random access resources;

[0070] Offset configuration information of frequency domain resource information of non-contention random access resources;

[0071] Offset configuration information of time domain resource information of non-contention random access resources;

[0072] At least two sets of downlink transmission reception timer configuration information for different types of first communication nodes;

[0073] Information on how random access resources are used.

[0074] In one embodiment, Figure 3 A schematic diagram of a flow chart of another data transmission method provided by an embodiment is shown. Figure 3 As shown, in addition to the above step S110, the following steps may also be included.

[0075] S120. The first communication node obtains a transmission resource offset offset within a range of configuration information of the transmission resource.

[0076] The configuration information of the transmission resource includes at least one of the length and value range parameters of the transmission resource offset, that is, the transmission resource offset offset within the configuration information range of the transmission resource is not greater than the transmission resource offset length and value range parameters.

[0077] The transmission resources include at least one of the following resources: random access resources, competitive random access resources, non-competitive random access resources, uplink transmission authorization resources, downlink transmission scheduling resources, scheduling-free resources, scheduling-free uplink transmission resources, scheduling-free downlink transmission resources, random access prefix in random access resources, terminal-specific C-RNTI; other types of RNTI.

[0078] The method for the first communication node to obtain the transmission resource offset offset includes at least one of the following two methods:

[0079] Method 1: The first communication node receives a transmission resource offset (the offset value can be a positive number, zero or a negative number) within the range of configuration information of the transmission resource sent by the second communication node in a broadcast message or a dedicated message;

[0080] Method 2: The first communication node determines the transmission resource offset offset within the configuration information range of the transmission resource based on the terminal identifier or the cell identifier (for example, the terminal can obtain the transmission resource offset by taking the length or value range of the transmission resource offset modulo a certain terminal feature ID).

[0081] S130. The first communication node determines a starting position X of a transmission resource, and superimposes a transmission resource offset offset on the starting position X to obtain an actually used transmission resource position (X+offset).

[0082] The starting position X is determined based on at least one of a terminal identifier and a cell identifier.

[0083] This embodiment may be used to determine a transmission resource location so that the first communication node sends a subsequent message (eg, a second air interface transmission, etc.) at the transmission resource location.

[0084] In one embodiment, for problem 1, the configuration information of the transmission resource includes the offset configuration information of the dedicated resource; the offset configuration information of the dedicated resource includes at least one of the length and value range parameters of the offset of the dedicated resource; and the method further includes the following three steps:

[0085] Step 1: The first communication node determines a valid value of the offset of the dedicated resource according to at least one of the length and value range parameters of the offset of the dedicated resource.

[0086] Step 2: The first communication node determines the dedicated resource according to the effective value of the offset of the dedicated resource.

[0087] Step 3: After receiving the first air interface transmission (message 0) sent by the second communication node, the first communication node sends a second air interface transmission (message 1) to the second communication node according to dedicated resources.

[0088] The configuration information of transmission resources includes offset configuration information of dedicated resources; the offset configuration information of dedicated resources includes at least two sets of offset configuration information of dedicated resources for first communication nodes with different functions, and each set of offset configuration information of dedicated resources includes at least one of the length and value range parameters of the offset of the dedicated resources.

[0089] The function using the dedicated resources is at least one of the following functions: handover, PDCCH order, Early Data Transmission (EDT), MO-EDT, MT-EDT; the function is one of the contents of the offset configuration information of the dedicated resources.

[0090] The dedicated resource includes: at least one of a non-contention random access resource, a dedicated random access resource, and a dedicated terminal identifier.

[0091] The non-competitive random access resources or dedicated random access resources include at least one of the following parameters: random access prefix in the eMTC system; carrier number and subcarrier number in the random access frequency domain resources in the NB-IoT system; random access time domain resources; random access resources based on single sideband (SSB) in the new radio access technology (New Radio, NR) system (such as the number of SSBs for each random access opportunity or the random access prefix on each SSB, etc.);

[0092] The dedicated terminal identity includes at least one of the following parameters: a terminal-specific Cell-Radio Network Temporary Identity (C-RNTI); or other types of RNTI.

[0093] In one embodiment, for problem 1, in a multi-carrier NB-IoT system, the configuration information of the transmission resource includes frequency domain resource information of the non-competitive random access resource, and the frequency domain resource information of the non-competitive random access resource includes at least one item of an initial carrier list and an initial subcarrier list; the initial carrier list includes N carriers, and the initial subcarrier list includes T subcarriers, where N and T are positive integers;

[0094] The method also includes at least one of the following two methods:

[0095] Method 1: The first communication node takes modulo N according to the carrier number of the first transmission of the air interface monitored at the current moment, and determines the initial carrier number of the non-competitive random access resource; after receiving the first transmission of the air interface sent by the second communication node, the first communication node sends the second transmission of the air interface to the second communication node according to the initial carrier number of the non-competitive random access resource.

[0096] Method 2: The first communication node takes modulus T based on the subcarrier number of the first transmission of the air interface monitored at the current moment, and determines the initial subcarrier number of the non-competitive random access resource; after receiving the first transmission of the air interface sent by the second communication node, the first communication node sends the second transmission of the air interface to the second communication node according to the initial subcarrier number of the non-competitive random access resource.

[0097] In one embodiment, for problem 1, in a multi-carrier NB-IoT system, the configuration information of the transmission resources includes a mapping relationship between resources for monitoring the first transmission of the air interface and non-competitive random access resources; the method further includes the following two steps:

[0098] Step 1, the first communication node determines the non-contention random access resource according to the mapping relationship between the carrier for monitoring the first transmission of the air interface at the current moment and the resource for monitoring the first transmission of the air interface and the non-contention random access resource;

[0099] Step 2. After receiving the first air interface transmission sent by the second communication node, the first communication node sends a second air interface transmission to the second communication node based on non-competitive random access resources, and the non-competitive random access resources at least include at least one of the initial carrier sequence number and the initial subcarrier sequence number of the non-competitive random access resources.

[0100] In one embodiment, for problem 1, in a multi-carrier NB-IoT system, the configuration information of the transmission resource includes the offset configuration information of the frequency domain resource information of the non-competitive random access resource, and the offset configuration information of the frequency domain resource information of the non-competitive random access resource includes N carriers, where N is a positive integer; if m is configured on each carrier i i subcarrier resources, the subcarrier resources on these carriers are arranged together (for example, in a cascade manner or in a certain combination manner), and an initial frequency domain resource group of non-contention random access resources that can be used for non-contention random access can be obtained, and the resource group includes M resources, The method further comprises the steps of:

[0101] After receiving the first air interface transmission sent by the second communication node, the first communication node sends the second air interface transmission to the second communication node according to the initial frequency domain resources of the non-contention random access resources;

[0102] The initial frequency domain resources of the non-contention random access resources are obtained by at least one of the following methods:

[0103] The first communication node determines the offset of the frequency domain resource information of the non-contention random access resource according to the offset configuration information of the frequency domain resource information of the non-contention random access resource; the first communication node obtains the initial frequency domain resource of the non-contention random access resource from the initial frequency domain resource group of the non-contention random access resource according to the offset of the frequency domain resource information of the non-contention random access resource;

[0104] The first communication node takes a modulus of M according to the terminal identifier to determine an initial frequency domain resource of the non-contention random access resource;

[0105] When the number of carriers of the first transmission of the air interface is greater than M, the first communication node modulos M according to the carrier sequence number of the first transmission of the air interface monitored at the current moment, and determines the initial frequency domain resource of the non-competitive random access resource;

[0106] When the number of carriers of the first transmission of the air interface is less than M, the first communication node modulo the number of carriers of the first transmission of the monitored air interface according to each resource sequence number in the initial frequency domain resource group of the non-competitive random access resource, and determines the initial frequency domain resources of the non-competitive random access resource. This is equivalent to mapping multiple non-competitive initial frequency domain resources to one paging carrier. The first communication node also receives an offset corresponding to the non-competitive initial frequency domain resource carried in the first transmission of the air interface, and according to the offset, the first communication node can obtain a determined non-competitive initial frequency domain resource from multiple non-competitive initial frequency domain resources corresponding to the currently monitored paging carrier.

[0107] Furthermore, the first communication node extracts the initial carrier number and the initial subcarrier number on the carrier for non-competitive random access according to the obtained determined non-competitive initial frequency domain resources and the arrangement of the resources.

[0108] In one embodiment, with respect to question 2, the configuration information of the transmission resource includes information on how the random access resource is used; and the information on how the random access resource is used includes at least one of the following information:

[0109] Each random access resource usage information corresponds to a set of random access resources;

[0110] The random access resource usage information is used to mark the coverage level of the random access resource;

[0111] The random access resource usage information is used to mark the characteristics of the uplink transmission after the first communication node uses the random access resource to send the second transmission of the air interface;

[0112] The method further comprises the steps of:

[0113] After receiving the first air interface transmission sent by the second communication node, the first communication node selects a set of random access resources and sends a second air interface transmission to the second communication node.

[0114] The signaling overhead occupied by multiple sets of random access resource configurations can be used to provide as much information as possible. For example, different random access resources can be used to distinguish whether the first communication node needs to send additional uplink data in the fourth transmission of the air interface after receiving downlink data.

[0115] In this embodiment, the network brings the characteristic information (e.g., Subscription Based UE Differentiation Information) or status information of the first communication node to the second communication node in a paging message, or the second communication node stores certain terminal characteristic information or status information in the access layer context of the first communication node when the last connection is released. After receiving the paging message sent by the core network, the second communication node carries the relevant information of multiple sets of random access resources in the paging message to the first communication node. Further, the second communication node determines the type of the first communication node based on the characteristic information or status information, and marks the usage of multiple sets of random access resources based on the type of the first communication node.

[0116] In one embodiment, with respect to question 3, the configuration information of the transmission resource includes at least two sets of downlink transmission reception timer configuration information for different types of first communication nodes; each set of downlink transmission reception timer configuration information includes at least one of type information, timer length, and timer start position offset;

[0117] The type information is used to indicate whether the state of the first communication node is stationary or non-stationary, or to indicate whether the first communication node is always in one cell or moves from other cells; the timer start position offset is set to the offset relative to the previous uplink transmission end position of the first communication node.

[0118] Furthermore, the downlink transmission reception timer configuration information may be used as a reference configuration, and the second communication node may further expand different reference configurations into configurations for different coverage levels, and the present invention does not impose any specific limitation on this.

[0119] In one embodiment, for question 5, the method further includes the following two steps:

[0120] Step 1, the first communication node receives the third air interface transmission (message2) sent by the second communication node;

[0121] Step 2: The first communication node sends a fourth air interface transmission (message 3) to the second communication node, where the fourth air interface transmission includes an identifier of the first communication node.

[0122] The identifier of the first communication node includes at least one of a NAS identifier (eg, S-TMSI) and a resume ID (eg, ResumeID). The identifier of the first communication node is used by the second communication node to verify the target first communication node.

[0123] After receiving the identifier of the first communication node, the second communication node compares the identifier with the saved identifier of the first communication node associated with the paging message, and if they are consistent, it is considered that the fourth transmission of the air interface comes from the target first communication node. In this embodiment, since no new uplink NAS signaling or RRC signaling is introduced, additional downlink NAS or RRC confirmation signaling can be avoided, saving signaling overhead.

[0124] Furthermore, the first communication node identifier may be included in an uplink media access control element (MAC CE) or may be attached to uplink service data (eg, uplink service data sent by the application layer for confirming downlink service data).

[0125] The first transmission of the air interface mentioned in the above embodiment may be a paging message; the second transmission of the air interface may be at least one of a random access message and a random access prefix; the third transmission of the air interface may be at least one of downlink data information, a random access response message, and a random access prefix response; the fourth transmission of the air interface may be at least one of an uplink message and uplink data information.

[0126] The first information may be at least one of a broadcast message, a dedicated message, a unicast message, and a configuration signaling.

[0127] Figure 4 A schematic diagram of a flow chart of another data transmission method provided by an embodiment is shown. Figure 4 As shown, the method provided in this embodiment is applicable to a second communication node, and the second communication node may be a base station (such as an eNB, an AP, etc.). The method includes the following steps.

[0128] S210. The second communication node sends first information to the first communication node, where the first information includes configuration information of transmission resources.

[0129] The configuration information of the transmission resource includes at least one of the following information:

[0130] Offset configuration information for dedicated resources;

[0131] Frequency domain resource information of non-contention random access resources;

[0132] Monitoring the mapping relationship between the resources of the first transmission of the air interface and the non-contention random access resources;

[0133] Offset configuration information of frequency domain resource information of non-contention random access resources;

[0134] Offset configuration information of time domain resource information of non-contention random access resources;

[0135] At least two sets of downlink transmission reception timer configuration information for different types of first communication nodes;

[0136] Information on how random access resources are used.

[0137] In one embodiment, for problem 1, the configuration information of the transmission resource includes the offset configuration information of the dedicated resource; the offset configuration information of the dedicated resource includes at least one of the length and value range parameters of the offset of the dedicated resource; and the method further includes the following steps:

[0138] After sending a first air interface transmission (message 0) to the first communication node, the second communication node receives a second air interface transmission (message 1) sent by the first communication node according to the dedicated resources.

[0139] The configuration information of transmission resources includes offset configuration information of dedicated resources; the offset configuration information of dedicated resources includes at least two sets of offset configuration information of dedicated resources for first communication nodes with different functions, and each set of offset configuration information of dedicated resources includes at least one of the length and value range parameters of the offset of the dedicated resources.

[0140] The function using the dedicated resources is at least one of the following functions: handover, PDCCH order, Early Data Transmission (EDT), MO-EDT, MT-EDT; the function is one of the contents of the offset configuration information of the dedicated resources.

[0141] The dedicated resource includes: at least one of a non-contention random access resource, a dedicated random access resource, and a dedicated terminal identifier.

[0142] The non-contention random access resource or dedicated random access resource includes at least one of the following parameters: random access prefix in the eMTC system; carrier number and subcarrier number in the random access frequency domain resource in the NB-IoT system; random access time domain resource; SSB-based random access resource in the NR system (such as the number of SSBs per random access opportunity or the random access prefix on each SSB, etc.);

[0143] The dedicated terminal identifier includes at least one of the following parameters: a terminal-specific C-RNTI; or other types of RNTIs.

[0144] In one embodiment, for problem 1, in a multi-carrier NB-IoT system, the configuration information of the transmission resource includes frequency domain resource information of the non-competitive random access resource, and the frequency domain resource information of the non-competitive random access resource includes at least one item of an initial carrier list and an initial subcarrier list; the initial carrier list includes N carriers, and the initial subcarrier list includes T subcarriers, where N and T are positive integers;

[0145] The method also includes at least one of the following two methods:

[0146] Method 1: After sending a first air interface transmission to a first communication node, a second communication node receives a second air interface transmission sent by the first communication node according to an initial carrier sequence number of a non-competitive random access resource.

[0147] Method 2: After sending the first air interface transmission to the first communication node, the second communication node receives the second air interface transmission sent by the first communication node according to the initial subcarrier sequence number of the non-competitive random access resource.

[0148] In one embodiment, for problem 1, in a multi-carrier NB-IoT system, the configuration information of the transmission resources includes a mapping relationship between resources for monitoring the first transmission of the air interface and non-competitive random access resources; the method further includes the following steps:

[0149] After sending the first air interface transmission to the first communication node, the second communication node receives the second air interface transmission sent by the first communication node according to the non-competitive random access resources, and the non-competitive random access resources at least include at least one of the initial carrier sequence number and the initial subcarrier sequence number of the non-competitive random access resources.

[0150] In one embodiment, for problem 1, in a multi-carrier NB-IoT system, the configuration information of the transmission resource includes the offset configuration information of the frequency domain resource information of the non-competitive random access resource, and the offset configuration information of the frequency domain resource information of the non-competitive random access resource includes N carriers, where N is a positive integer; if m is configured on each carrier i i subcarrier resources, then the initial frequency domain resource group of non-contention random access resources includes M resources, The method further comprises the steps of:

[0151] After sending the first air interface transmission to the first communication node, the second communication node receives the second air interface transmission sent by the first communication node according to the initial frequency domain resources of the non-competitive random access resources.

[0152] In one embodiment, with respect to question 2, the configuration information of the transmission resource includes information on how the random access resource is used; and the information on how the random access resource is used includes at least one of the following information:

[0153] Each random access resource usage information corresponds to a set of random access resources;

[0154] The random access resource usage information is used to mark the coverage level of the random access resource;

[0155] The random access resource usage information is used to mark the characteristics of the uplink transmission after the first communication node uses the random access resource to send the second transmission of the air interface;

[0156] The method further comprises the steps of:

[0157] After sending the first air interface transmission to the first communication node, the second communication node receives the second air interface transmission sent by the first communication node according to the selected set of random access resources.

[0158] In one embodiment, with respect to question 3, the configuration information of the transmission resource includes at least two sets of downlink transmission reception timer configuration information for different types of first communication nodes; each set of downlink transmission reception timer configuration information includes at least one of type information, timer length, and timer start position offset;

[0159] The type information is used to indicate whether the state of the first communication node is stationary or non-stationary, or to indicate whether the first communication node is always in one cell or moves from other cells; the timer start position offset is set to the offset relative to the previous uplink transmission end position of the first communication node.

[0160] In one embodiment, for question 5, the method further includes the following two steps:

[0161] Step 1, the second communication node sends an air interface third transmission (message 2) to the first communication node;

[0162] Step 2: The second communication node receives a fourth air interface transmission (message 3) sent by the first communication node, where the fourth air interface transmission includes an identifier of the first communication node.

[0163] The identifier of the first communication node includes at least one of a NAS identifier (eg, S-TMSI) and a resume ID (eg, ResumeID). The identifier of the first communication node is used by the second communication node to verify the target first communication node.

[0164] The first transmission of the air interface mentioned in the above embodiment may be a paging message; the second transmission of the air interface may be at least one of a random access message and a random access prefix; the third transmission of the air interface may be at least one of downlink data information, a random access response message, and a random access prefix response; the fourth transmission of the air interface may be at least one of an uplink message and uplink data information.

[0165] The first information may be at least one of a broadcast message, a dedicated message, a unicast message, and a configuration signaling.

[0166] Figure 5 A schematic diagram of a flow chart of another data transmission method provided by an embodiment is shown. Figure 5 As shown, the method provided in this embodiment is applicable to a first communication node, which may be a terminal (such as a UE, a mobile device, etc.). The method is mainly aimed at problem 4, and the method includes the following steps.

[0167] S310. The first communication node receives a third air interface transmission (message 2) sent by the second communication node. The third air interface transmission includes at least one of the following features: the third air interface transmission includes downlink data, and the third air interface transmission indicates that the first communication node sends high-traffic uplink data to the second communication node.

[0168] S320. The first communication node sends a fourth air interface transmission (message 3) to the second communication node according to the third air interface transmission. The fourth air interface transmission triggers a radio resource control RRC connection between the second communication node and the first communication node.

[0169] That is, the first communication node initiates a fallback process in the fourth transmission of the air interface, triggering a radio resource control RRC connection between the second communication node and the first communication node.

[0170] Furthermore, since the first communication node has used dedicated random access resources for access in the second transmission of the air interface, it is no longer necessary to include conflict resolution related information in the fallback process signaling initiated by the first communication node. Secondly, since there is already a data transmission channel between the first communication node and the second communication node (for the CP scheme, at least signaling resource bearer (SRB) 0 can be used or SRB1 can be established and used for data transmission, and for the UP scheme, activated data resource bearers (DRB) can be used for data transmission), there is no need to trigger the configuration process of SRB or DRB. Finally, since the interface between the second communication node and the network already exists, after the second communication node receives the message for completing the establishment, recovery or reconfiguration of the RRC connection, it is no longer necessary to trigger the process of establishing or recovering the S1 interface.

[0171] In one embodiment, the fourth transmission of the air interface includes any one of an RRC connection establishment complete message, an RRC connection recovery complete message, and an RRC connection reconfiguration complete message.

[0172] In one embodiment, the fourth air interface transmission also includes any one of an RRC connection establishment request message, an RRC connection recovery request message, and an RRC connection reconfiguration request message. The method also includes the following two steps:

[0173] Step 1, the first communication node receives the fifth air interface transmission (message 4) sent by the second communication node, where the fifth air interface transmission includes any one of an RRC connection establishment message, an RRC connection recovery message, and an RRC connection reconfiguration message;

[0174] Step 2: The first communication node sends the sixth air interface transmission to the second communication node according to the fifth air interface transmission. The sixth air interface transmission includes any one of an RRC connection establishment completion message, an RRC connection recovery completion message, and an RRC connection reconfiguration completion message.

[0175] In one embodiment, with respect to question 5, the fourth transmission of the air interface includes an identifier of the first communication node. The identifier of the first communication node includes at least one of a NAS identifier (e.g., S-TMSI) and a recovery ID (e.g., ResumeID). The identifier of the first communication node is used by the second communication node to verify the target first communication node.

[0176] After receiving the identifier of the first communication node, the second communication node compares the identifier with the saved identifier of the first communication node associated with the paging message, and if they are consistent, it is considered that the fourth transmission of the air interface comes from the target first communication node. In this embodiment, since no new uplink NAS signaling or RRC signaling is introduced, additional downlink NAS or RRC confirmation signaling can be avoided, saving signaling overhead.

[0177] Figure 6 A schematic diagram of a flow chart of another data transmission method provided by an embodiment is shown. Figure 6 As shown, the method provided in this embodiment is applicable to a second communication node, and the second communication node may be a base station (such as an eNB, an AP, etc.). The method is mainly aimed at problem 4, and the method includes the following steps.

[0178] S410. The second communication node sends a third air interface transmission (message 2) to the first communication node. The third air interface transmission includes at least one of the following features: the third air interface transmission includes downlink data, and the third air interface transmission instructs the first communication node to send high-traffic uplink data to the second communication node.

[0179] S420. The second communication node receives the fourth air interface transmission (message3) sent by the first communication node. The fourth air interface transmission triggers the radio resource control RRC connection between the second communication node and the first communication node.

[0180] That is, the first communication node initiates a fallback process in the fourth transmission of the air interface, triggering a radio resource control RRC connection between the second communication node and the first communication node.

[0181] In one embodiment, the fourth transmission of the air interface includes any one of an RRC connection establishment complete message, an RRC connection recovery complete message, and an RRC connection reconfiguration complete message.

[0182] In one embodiment, the fourth air interface transmission also includes any one of an RRC connection establishment request message, an RRC connection recovery request message, and an RRC connection reconfiguration request message. The method also includes the following two steps:

[0183] Step 1, the second communication node sends an air interface fifth transmission (message 4) to the first communication node, where the air interface fifth transmission includes any one of an RRC connection establishment message, an RRC connection recovery message, and an RRC connection reconfiguration message;

[0184] Step 2: The second communication node receives the sixth air interface transmission sent by the first communication node, where the sixth air interface transmission includes any one of an RRC connection establishment completion message, an RRC connection recovery completion message, and an RRC connection reconfiguration completion message.

[0185] In one embodiment, with respect to question 5, the fourth transmission of the air interface includes an identifier of the first communication node. The identifier of the first communication node includes at least one of a NAS identifier (e.g., S-TMSI) and a recovery ID (e.g., ResumeID). The identifier of the first communication node is used by the second communication node to verify the target first communication node.

[0186] Taking the first communication node as a terminal and the second communication node as a base station as an example, some exemplary implementations are listed below to illustrate the data transmission method provided in the embodiments of the present application.

[0187] In the first exemplary embodiment, the terminal receives the length or value range parameter of the non-competitive random access prefix offset for the MT-EDT function configured by the network in the system message. When there are fewer terminals using the MT-EDT function, a shorter length or value range, such as 2 bits, can be set for the offset, which occupies less paging signaling overhead; when there are more terminals using the MT-EDT function, a larger length or value range, such as 5 bits, can be set for the offset to support non-competitive random access for more terminals. According to the length or value range parameter of the configured non-competitive random access prefix offset, based on the aforementioned scheme 1-1, the base station can include different non-competitive random access prefix offsets allocated to different terminals that are not greater than the length or value range in the paging signaling, and the terminal obtains the non-competitive random access prefix that should actually be used based on the starting value or reference value of the non-competitive random access prefix (e.g., the maximum value of the competitive random access prefix plus 1) and the non-competitive random access prefix offset. Alternatively, based on the aforementioned scheme 1-2, the terminal can take the modulus of the length or value range parameter based on a certain terminal feature ID to obtain the non-competitive random access prefix offset used by itself.

[0188] In a second exemplary embodiment, the terminal receives multiple non-competitive random access prefix offset lengths or value range parameters for multiple functions (such as MT-EDT function and random access function triggered by PDCCH order) configured by the network in a system message; or the network segments all available non-competitive random access prefix offsets and provides them to different functions. For example, a 4-bit non-competitive random access prefix offset length is allocated to the MT-EDT function, and a 2-bit non-competitive random access prefix offset length is allocated to the PDCCH order function. The base station may include different non-competitive random access prefix offsets allocated to different terminals in the paging signaling or the PDCCH order signaling that are not greater than the offset length or value range parameter corresponding to the corresponding function. Alternatively, based on the aforementioned schemes 1-2, the terminal may obtain the non-competitive random access prefix offset used by itself by taking the modulus of the length or value range corresponding to the corresponding function based on a certain terminal feature ID.

[0189] In a third exemplary embodiment, the terminal receives at least one of the length or value range parameter of the dedicated C-RNTI offset for the MT-EDT function and the starting value of the dedicated C-RNTI configured by the network in the system message. The base station may include in the paging signaling a dedicated C-RNTI offset allocated to different terminals that is not greater than the length or value range parameter, and the terminal obtains the dedicated C-RNTI to be actually used based on the starting value of the dedicated C-RNTI (configured by the base station or derived from other RNTI ranges) and the dedicated C-RNTI offset. Alternatively, the terminal may obtain the dedicated C-RNTI offset used by itself by taking the modulus of the length or value range of the dedicated C-RNTI offset based on a certain terminal feature ID.

[0190] In a fourth exemplary embodiment, the terminal receives lengths or value range parameters of multiple dedicated C-RNTI offsets for multiple functions configured by the network in a system message, or the network segments all available dedicated C-RNTI offsets and provides them to different functions.

[0191] In a fifth exemplary implementation, the base station carries multiple sets of random access resource related information in a paging message to the terminal, and the related information of each set of random access resources may include usage information of the random access resource.

[0192] After receiving the paging message sent by the core network, the base station determines whether it is a mobile terminal according to the characteristic information or the state information. If the terminal is a mobile terminal, the base station carries the relevant information of multiple sets of random access resources to the terminal in the paging message, and uses the usage information to mark the multiple sets of random access resources corresponding to different coverage levels; if the terminal is a stationary terminal, the base station carries the relevant information of multiple sets of random access resources to the terminal in the paging message, and uses the usage information to mark the multiple sets of random access resources corresponding to different air interface fourth transmissions.

[0193] Further, take the example that the base station carries the relevant information of two sets of random access resources in the paging message to the terminal (for distinction, the relevant information of the two sets of random access resources are named as the first usage mode and the second usage mode respectively). The first usage mode is used to indicate that the terminal will include data in the subsequent uplink transmission (such as the first uplink transmission after the random access prefix), and needs to request a larger uplink authorization; the second usage mode is used to indicate that the terminal will not include data in the subsequent uplink transmission (such as the first uplink transmission after the random access prefix), and the network can allocate a smaller uplink authorization. If the relevant information of each set of random access resources includes coverage level information respectively, it can be considered that it implicitly indicates that these random access resources correspond to different coverage levels. The above usage modes can also be combined, for example, using a certain usage mode to indicate: when the terminal uses this set of random access resources, it indicates that the terminal is at coverage level n and will include data in the uplink transmission after the random access prefix. Use another usage mode to indicate: when the terminal uses this set of random access resources, it indicates that the terminal is at coverage level n and will not include data in the uplink transmission after the random access prefix.

[0194] After receiving the first transmission of the air interface (paging message), the terminal selects one of the multiple coverage levels according to actual needs to initiate random access (ie, sends the second transmission of the air interface).

[0195] In a sixth exemplary embodiment, the base station broadcasts two sets of downlink transmission reception timer configuration information. The random access resource usage information respectively marks the two sets of downlink transmission reception timer configuration information (for a stationary terminal and a non-stationary terminal respectively), or the random access resource usage information respectively marks the two sets of downlink transmission reception timer configuration information (for a terminal that is always in the cell or a terminal that moves from another cell respectively).

[0196] For the downlink transmission reception timer configuration information of a stationary terminal or a terminal that is always in the current cell, the timer start position offset can be set to a smaller value, or the timer duration can be set to a smaller value. For the downlink transmission reception timer configuration information of a non-stationary terminal or a terminal that moves from another cell, the timer start position offset can be set to a larger value, or the timer duration can be set to a larger value.

[0197] Furthermore, for non-stationary terminals, the base station can provide downlink transmission reception timer configuration information for multiple sets of coverage levels. If the terminal moves after the last connection is released, the terminal will preferably receive the third air interface transmission using the downlink transmission reception timer configuration information for non-stationary terminals that matches the coverage level used to send the random access prefix. The base station will also determine whether the paged terminal has moved and the applicable coverage level based on the situation of receiving the dedicated random access prefix, so as to send the third air interface transmission to the terminal within the appropriate timer start position and timer duration.

[0198] In a seventh exemplary embodiment, Figure 7 A flow chart of a terminal-triggered MT-EDT fallback process provided by an embodiment is shown. The terminal may send any one of the traditional RRC connection establishment request message, RRC connection recovery request message, and RRC connection reconfiguration request message in the fourth transmission of the air interface to request the establishment / recovery / reconfiguration of the air interface (such as RRC) connection, and the message may carry part of the uplink data or buffer status report at the same time. After receiving the fourth transmission of the air interface, the base station sends the fifth transmission of the air interface to the terminal, which may include an air interface establishment message / recovery message / reconfiguration message, but does not need to include conflict resolution related information, and does not need to trigger the establishment or recovery of the connection between the base station and the core network again. After receiving the fifth transmission of the air interface, the terminal enters the connected state and sends the sixth transmission of the air interface to the base station, which may include an air interface establishment completion message / recovery completion message / reconfiguration completion message.

[0199] A terminal using the CP scheme may preferably use the seventh exemplary embodiment.

[0200] In an eighth exemplary embodiment, Figure 8 A schematic flow chart of another terminal-triggered MT-EDT fallback process provided by an embodiment is shown. The terminal can directly include an air interface establishment completion message / recovery completion message / reconfiguration completion message in the fourth air interface transmission and enter the connected state. If the subsequent base station needs to modify the terminal configuration, it can initiate an air interface connection reconfiguration process.

[0201] A terminal using the UP scheme may preferably use the eighth exemplary embodiment.

[0202] Fig. 9 A schematic diagram of the structure of a data transmission device provided by an embodiment is shown. The data transmission device can be configured in a first communication node, such as Fig. 9 As shown, it includes: a receiving module 10. In one embodiment, it also includes: a processing module 11 and a sending module 12.

[0203] The receiving module 10 is configured to receive first information sent by the second communication node, where the first information includes configuration information of transmission resources.

[0204] The data transmission device provided in this embodiment is to realize Figure 2 or Figure 3 The data transmission method of the illustrated embodiment and the data transmission device provided in this embodiment have similar implementation principles and technical effects, which will not be described in detail here.

[0205] In one embodiment, the configuration information of the transmission resource includes at least one of the following information:

[0206] Offset configuration information for dedicated resources;

[0207] Frequency domain resource information of non-contention random access resources;

[0208] Monitoring the mapping relationship between the resources of the first transmission of the air interface and the non-contention random access resources;

[0209] Offset configuration information of frequency domain resource information of non-contention random access resources;

[0210] Offset configuration information of time domain resource information of non-contention random access resources;

[0211] At least two sets of downlink transmission reception timer configuration information for different types of first communication nodes;

[0212] Information on how random access resources are used.

[0213] In one embodiment, the configuration information of the transmission resource includes the offset configuration information of the dedicated resource; the offset configuration information of the dedicated resource includes at least one of the length and value range parameters of the offset of the dedicated resource;

[0214] The processing module 11 is configured to determine a valid value of the offset of the dedicated resource according to at least one of the length and value range parameters of the offset of the dedicated resource; and determine the dedicated resource according to the valid value of the offset of the dedicated resource;

[0215] The sending module 12 is configured to send an air interface second transmission (message 1) to the second communication node according to dedicated resources after the receiving module 10 receives the air interface first transmission (message 0) sent by the second communication node.

[0216] In one embodiment, the configuration information of the transmission resources includes offset configuration information of dedicated resources; the offset configuration information of the dedicated resources includes at least two sets of offset configuration information of dedicated resources for first communication nodes with different functions, and each set of offset configuration information of dedicated resources includes at least one of the length and value range parameters of the offset of the dedicated resources.

[0217] In one embodiment, the function of using dedicated resources is at least one of the following functions: handover, physical layer downlink control channel order (PDCCH order), advance data transmission EDT, origin-call advance data transmission MO-EDT, and termination-call advance data transmission MT-EDT; the function is one of the contents of the offset configuration information of the dedicated resources.

[0218] In one embodiment, the dedicated resource includes: at least one of a non-contention random access resource, a dedicated random access resource, and a dedicated terminal identifier.

[0219] In one embodiment, the non-contention random access resource or the dedicated random access resource includes at least one of the following parameters: a random access prefix in an enhanced machine type communication eMTC system; a carrier number and a subcarrier number in a random access frequency domain resource in a narrowband Internet of Things NB-IoT system; a random access time domain resource; a random access resource based on a single sideband SSB in a new radio access technology NR system;

[0220] The dedicated terminal identifier includes at least one of the following parameters: a cell radio network temporary identifier C-RNTI specific to the terminal; or other types of radio network temporary identifiers RNTI.

[0221] In one embodiment, the configuration information of the transmission resource includes frequency domain resource information of the non-contention random access resource, and the frequency domain resource information of the non-contention random access resource includes at least one item of an initial carrier list and an initial subcarrier list; the initial carrier list includes N carriers, and the initial subcarrier list includes T subcarriers, where N and T are positive integers;

[0222] The processing module 11 is configured to take a modulus of N according to the carrier sequence number of the first transmission of the air interface monitored at the current moment, and determine the initial carrier sequence number of the non-competitive random access resource; the sending module 12 is configured to send the second air interface transmission to the second communication node according to the initial carrier sequence number of the non-competitive random access resource after the receiving module 10 receives the first air interface transmission sent by the second communication node; and / or;

[0223] The processing module 11 is configured to take the modulus of T based on the subcarrier number of the first transmission of the air interface monitored at the current moment, and determine the initial subcarrier number of the non-competitive random access resource; the sending module 12 is configured to send the second air interface transmission to the second communication node according to the initial subcarrier number of the non-competitive random access resource after the receiving module 10 receives the first air interface transmission sent by the second communication node.

[0224] In one embodiment, the configuration information of the transmission resources includes a mapping relationship between the resources for monitoring the first transmission of the air interface and the non-contention random access resources;

[0225] The processing module 11 is configured to determine the non-contention random access resource according to the mapping relationship between the carrier for monitoring the first transmission of the air interface at the current moment and the resource for monitoring the first transmission of the air interface and the non-contention random access resource;

[0226] The sending module 12 is configured to send a second air interface transmission to the second communication node according to non-competitive random access resources after the receiving module 10 receives the first air interface transmission sent by the second communication node. The non-competitive random access resources at least include at least one of the initial carrier sequence number and the initial subcarrier sequence number of the non-competitive random access resources.

[0227] In one embodiment, the configuration information of the transmission resource includes the offset configuration information of the frequency domain resource information of the non-contention random access resource, and the offset configuration information of the frequency domain resource information of the non-contention random access resource includes N carriers, where N is a positive integer; if m is configured on each carrier i i subcarrier resources, then the initial frequency domain resource group of non-contention random access resources includes M resources,

[0228] The sending module 12 is configured to send an air interface second transmission to the second communication node according to the initial frequency domain resources of the non-contention random access resources after the receiving module 10 receives the air interface first transmission sent by the second communication node;

[0229] The initial frequency domain resources of the non-contention random access resources are obtained by at least one of the following methods:

[0230] The first communication node determines the offset of the frequency domain resource information of the non-contention random access resource according to the offset configuration information of the frequency domain resource information of the non-contention random access resource; the first communication node obtains the initial frequency domain resource of the non-contention random access resource from the initial frequency domain resource group of the non-contention random access resource according to the offset of the frequency domain resource information of the non-contention random access resource;

[0231] The first communication node takes a modulus of M according to the terminal identifier to determine an initial frequency domain resource of the non-contention random access resource;

[0232] When the number of carriers of the first transmission of the air interface is greater than M, the first communication node modulos M according to the carrier sequence number of the first transmission of the air interface monitored at the current moment, and determines the initial frequency domain resource of the non-competitive random access resource;

[0233] When the number of carriers of the first transmission of the air interface is less than M, the first communication node modulo the number of carriers of the first transmission of the monitored air interface according to each resource sequence number in the initial frequency domain resource group of the non-competitive random access resources, and determines the initial frequency domain resources of the non-competitive random access resources.

[0234] In one embodiment, the configuration information of the transmission resource includes at least two sets of downlink transmission reception timer configuration information for different types of first communication nodes; each set of downlink transmission reception timer configuration information includes at least one of type information, timer length, and timer start position offset;

[0235] The type information is used to indicate whether the state of the first communication node is stationary or non-stationary, or to indicate whether the first communication node is always in one cell or moves from other cells; the timer start position offset is set to the offset relative to the previous uplink transmission end position of the first communication node.

[0236] In one embodiment, the configuration information of the transmission resource includes information on how the random access resource is used; and the information on how the random access resource is used includes at least one of the following information:

[0237] Each random access resource usage information corresponds to a set of random access resources;

[0238] The random access resource usage information is used to mark the coverage level of the random access resource;

[0239] The random access resource usage information is used to mark the characteristics of the uplink transmission after the first communication node uses the random access resource to send the second transmission of the air interface;

[0240] The processing module 11 is configured to select a set of random access resources after the receiving module 10 receives the first air interface transmission sent by the second communication node;

[0241] The sending module 12 is configured to send an air interface second transmission to the second communication node.

[0242] In one embodiment, the processing module 11 is configured to obtain a transmission resource offset within the configuration information range of the transmission resource; determine a starting position X of the transmission resource, and superimpose the transmission resource offset offset on the starting position X to obtain an actually used transmission resource position (X+offset).

[0243] In one embodiment, the transmission resource includes at least one of the following resources: random access resources, contention random access resources, non-contention random access resources, scheduling-free resources, scheduling-free uplink transmission resources, and scheduling-free downlink transmission resources.

[0244] In one embodiment, the starting position X is determined based on at least one of a terminal identifier and a cell identifier.

[0245] In one embodiment, the receiving module 10 is configured to receive a transmission resource offset within a range of configuration information of the transmission resource sent by the second communication node in a broadcast message or a dedicated message;

[0246] The processing module 11 is configured to determine a transmission resource offset within the range of configuration information of the transmission resource based on the terminal identifier or the cell identifier.

[0247] In one embodiment, the receiving module 10 is further configured to receive a third air interface transmission (message 2) sent by the second communication node;

[0248] The sending module is further configured to send a fourth air interface transmission (message 3) to the second communication node, where the fourth air interface transmission includes an identifier of the first communication node.

[0249] In one embodiment, the identifier of the first communication node includes at least one of a non-access stratum NAS identifier and a recovery identifier ID.

[0250] In one embodiment, the first transmission of the air interface is a paging message; the second transmission of the air interface is at least one of a random access message and a random access prefix; the third transmission of the air interface is at least one of downlink data information, a random access response message, and a random access prefix response; and the fourth transmission of the air interface is at least one of an uplink message and uplink data information.

[0251] In one embodiment, the first information is at least one of a broadcast message, a dedicated message, a unicast message, and a configuration signaling.

[0252] Fig.10 FIG. 4 shows a schematic diagram of the structure of another data transmission device provided by an embodiment. The data transmission device can be configured in a second communication node, such as Fig.10As shown, it includes: a sending module 20. In one embodiment, it also includes: a receiving module 21.

[0253] The sending module 20 is configured to send first information to the first communication node, where the first information includes configuration information of transmission resources.

[0254] The data transmission device provided in this embodiment is to realize Figure 4 The data transmission method of the illustrated embodiment and the data transmission device provided in this embodiment have similar implementation principles and technical effects, which will not be described in detail here.

[0255] In one embodiment, the configuration information of the transmission resource includes at least one of the following information:

[0256] Offset configuration information for dedicated resources;

[0257] Frequency domain resource information of non-contention random access resources;

[0258] Monitoring the mapping relationship between the resources of the first transmission of the air interface and the non-contention random access resources;

[0259] Offset configuration information of frequency domain resource information of non-contention random access resources;

[0260] Offset configuration information of time domain resource information of non-contention random access resources;

[0261] At least two sets of downlink transmission reception timer configuration information for different types of first communication nodes;

[0262] Information on how random access resources are used.

[0263] In one embodiment, the configuration information of the transmission resource includes the offset configuration information of the dedicated resource; the offset configuration information of the dedicated resource includes at least one of the length and value range parameters of the offset of the dedicated resource;

[0264] The receiving module 21 is configured to receive a second air interface transmission (message 1) sent by the first communication node according to dedicated resources after the sending module 20 sends a first air interface transmission (message 0) to the first communication node.

[0265] In one embodiment, the configuration information of the transmission resources includes offset configuration information of dedicated resources; the offset configuration information of the dedicated resources includes at least two sets of offset configuration information of dedicated resources for first communication nodes with different functions, and each set of offset configuration information of dedicated resources includes at least one of the length and value range parameters of the offset of the dedicated resources.

[0266] In one embodiment, the function of using dedicated resources is at least one of the following functions: handover, physical layer downlink control channel order (PDCCH order), advance data transmission EDT, origin-call advance data transmission MO-EDT, and termination-call advance data transmission MT-EDT; the function is one of the contents of the offset configuration information of the dedicated resources.

[0267] In one embodiment, the dedicated resource includes: at least one of a non-contention random access resource, a dedicated random access resource, and a dedicated terminal identifier.

[0268] In one embodiment, the non-contention random access resource or the dedicated random access resource includes at least one of the following parameters: a random access prefix in an enhanced machine type communication eMTC system; a carrier number and a subcarrier number in a random access frequency domain resource in a narrowband Internet of Things NB-IoT system; a random access time domain resource; a random access resource based on a single sideband SSB in a new radio access technology NR system;

[0269] The dedicated terminal identifier includes at least one of the following parameters: a cell radio network temporary identifier C-RNTI specific to the terminal; or other types of radio network temporary identifiers RNTI.

[0270] In one embodiment, the configuration information of the transmission resource includes frequency domain resource information of the non-contention random access resource, and the frequency domain resource information of the non-contention random access resource includes at least one item of an initial carrier list and an initial subcarrier list; the initial carrier list includes N carriers, and the initial subcarrier list includes T subcarriers, where N and T are positive integers;

[0271] The receiving module 21 is configured to receive the second air interface transmission sent by the first communication node according to the initial carrier sequence number of the non-competitive random access resource after the sending module 20 sends the first air interface transmission to the first communication node; and / or,

[0272] The receiving module 21 is configured to receive the second air interface transmission sent by the first communication node according to the initial subcarrier sequence number of the non-competitive random access resource after the sending module 20 sends the first air interface transmission to the first communication node.

[0273] In one embodiment, the configuration information of the transmission resources includes a mapping relationship between the resources for monitoring the first transmission of the air interface and the non-contention random access resources;

[0274] The receiving module 21 is configured to receive the second air interface transmission sent by the first communication node according to the non-competitive random access resources after the sending module 20 sends the first air interface transmission to the first communication node. The non-competitive random access resources at least include at least one of the initial carrier sequence number and the initial subcarrier sequence number of the non-competitive random access resources.

[0275] In one embodiment, the configuration information of the transmission resource includes the offset configuration information of the frequency domain resource information of the non-contention random access resource, and the offset configuration information of the frequency domain resource information of the non-contention random access resource includes N carriers, where N is a positive integer; if m is configured on each carrier i i subcarrier resources, then the initial frequency domain resource group of non-contention random access resources includes M resources,

[0276] The receiving module 21 is configured to receive a second air interface transmission sent by the first communication node according to the initial frequency domain resources of the non-competitive random access resources after the sending module 20 sends the first air interface transmission to the first communication node.

[0277] In one embodiment, the configuration information of the transmission resource includes at least two sets of downlink transmission reception timer configuration information for different types of first communication nodes; each set of downlink transmission reception timer configuration information includes at least one of type information, timer length, and timer start position offset;

[0278] The type information is used to indicate whether the state of the first communication node is stationary or non-stationary, or to indicate whether the first communication node is always in one cell or moves from other cells; the timer start position offset is set to the offset relative to the previous uplink transmission end position of the first communication node.

[0279] In one embodiment, the configuration information of the transmission resource includes information on how the random access resource is used; and the information on how the random access resource is used includes at least one of the following information:

[0280] Each random access resource usage information corresponds to a set of random access resources;

[0281] The random access resource usage information is used to mark the coverage level of the random access resource;

[0282] The random access resource usage information is used to mark the characteristics of the uplink transmission after the first communication node uses the random access resource to send the second transmission of the air interface;

[0283] The receiving module 21 is configured to receive a second air interface transmission sent by the first communication node according to a set of random access resources selected after the sending module 20 sends the first air interface transmission to the first communication node.

[0284] In one embodiment, the sending module 20 is further configured to send an air interface third transmission (message 2) to the first communication node;

[0285] The receiving module 21 is further configured to receive a fourth air interface transmission (message 3) sent by the first communication node, where the fourth air interface transmission includes an identifier of the first communication node.

[0286] In one embodiment, the identifier of the first communication node includes at least one of a non-access stratum NAS identifier and a recovery identifier ID.

[0287] In one embodiment, the first transmission of the air interface is a paging message; the second transmission of the air interface is at least one of a random access message and a random access prefix; the third transmission of the air interface is at least one of downlink data information, a random access response message, and a random access prefix response; and the fourth transmission of the air interface is at least one of an uplink message and uplink data information.

[0288] In one embodiment, the first information is at least one of a broadcast message, a dedicated message, a unicast message, and a configuration signaling.

[0289] Fig.11 A schematic diagram of the structure of another data transmission device provided by an embodiment is shown. The data transmission device can be configured in a first communication node, such as Fig.11 As shown, it includes: a receiving module 30 and a sending module 31.

[0290] The receiving module 30 is configured to receive a third air interface transmission (message2) sent by the second communication node, wherein the third air interface transmission includes at least one of the following features: the third air interface transmission includes downlink data, and the third air interface transmission indicates that the first communication node sends a large-volume uplink data to the second communication node;

[0291] The sending module 31 is configured to send a fourth air interface transmission (message 3) to the second communication node according to the third air interface transmission, and the fourth air interface transmission triggers the radio resource control RRC connection between the second communication node and the first communication node.

[0292] The data transmission device provided in this embodiment is to realize Figure 5 The data transmission method of the illustrated embodiment and the data transmission device provided in this embodiment have similar implementation principles and technical effects, which will not be described in detail here.

[0293] In one embodiment, the fourth transmission of the air interface includes any one of an RRC connection establishment complete message, an RRC connection recovery complete message, and an RRC connection reconfiguration complete message.

[0294] In one embodiment, the fourth transmission of the air interface also includes any one of an RRC connection establishment request message, an RRC connection recovery request message, and an RRC connection reconfiguration request message.

[0295] In one embodiment, the receiving module 30 is further configured to receive a fifth air interface transmission (message 4) sent by the second communication node, where the fifth air interface transmission includes any one of an RRC connection establishment message, an RRC connection recovery message, and an RRC connection reconfiguration message;

[0296] The sending module 31 is also configured to send an air interface sixth transmission to the second communication node according to the air interface fifth transmission, and the air interface sixth transmission includes any one of an RRC connection establishment completion message, an RRC connection recovery completion message, and an RRC connection reconfiguration completion message.

[0297] In one embodiment, the air interface fourth transmission includes an identification of the first communication node.

[0298] In one embodiment, the identifier of the first communication node includes at least one of a non-access stratum NAS identifier and a recovery identifier ID.

[0299] Fig.12 A schematic diagram of the structure of another data transmission device provided by an embodiment is shown. The data transmission device can be configured in the second communication node, such as Fig.12 As shown, it includes: a sending module 40 and a receiving module 41.

[0300] The sending module 40 is configured to send a third air interface transmission (message 2) to the first communication node, the third air interface transmission including at least one of the following features: the third air interface transmission includes downlink data, and the third air interface transmission indicates that the first communication node sends a large flow of uplink data to the second communication node;

[0301] The receiving module 41 is configured to receive a fourth air interface transmission (message3) sent by the first communication node, and the fourth air interface transmission triggers a radio resource control RRC connection between the second communication node and the first communication node.

[0302] The data transmission device provided in this embodiment is to realize Figure 6 The data transmission method of the illustrated embodiment and the data transmission device provided in this embodiment have similar implementation principles and technical effects, which will not be described in detail here.

[0303] In one embodiment, the fourth transmission of the air interface includes any one of an RRC connection establishment complete message, an RRC connection recovery complete message, and an RRC connection reconfiguration complete message.

[0304] In one embodiment, the fourth transmission of the air interface also includes any one of an RRC connection establishment request message, an RRC connection recovery request message, and an RRC connection reconfiguration request message.

[0305] In one embodiment, the sending module 40 is further configured to send an air interface fifth transmission (message 4) to the first communication node, where the air interface fifth transmission includes any one of an RRC connection establishment message, an RRC connection recovery message, and an RRC connection reconfiguration message;

[0306] The receiving module 41 is also configured to receive the sixth air interface transmission sent by the first communication node, and the sixth air interface transmission includes any one of an RRC connection establishment completion message, an RRC connection recovery completion message, and an RRC connection reconfiguration completion message.

[0307] In one embodiment, the air interface fourth transmission includes an identification of the first communication node.

[0308] In one embodiment, the identifier of the first communication node includes at least one of a non-access stratum NAS identifier and a recovery identifier ID.

[0309] The embodiment of the present application also provides a data transmission device, including: a processor, the processor is used to implement the method provided in any embodiment of the present application when executing a computer program. Specifically, the service transmission device can be the first communication node provided in any embodiment of the present application, or the second communication node provided in any embodiment of the present application, and the present application does not make any specific restrictions on this.

[0310] The following embodiments respectively provide structural schematic diagrams of a data transmission device as a UE and a base station.

[0311] Fig.13 A structural schematic diagram of a UE provided by an embodiment is shown. The UE can be implemented in various forms. The UE in the present application can include but is not limited to mobile terminal devices such as mobile phones, smart phones, laptops, digital broadcast receivers, personal digital assistants (PDA), tablet computers (Portable Device, PAD), portable multimedia players (Portable Media Player, PMP), navigation devices, vehicle-mounted terminal equipment, vehicle-mounted display terminals, vehicle-mounted electronic rearview mirrors, etc., and fixed terminal devices such as digital televisions (TV), desktop computers, etc.

[0312] like Fig.13 As shown, UE 50 may include a wireless communication unit 51, an audio / video (A / V) input unit 52, a user input unit 53, a sensing unit 54, an output unit 55, a memory 56, an interface unit 57, a processor 58, a power supply unit 59, and the like. Fig.13A UE is shown including various components, but it should be understood that implementing all of the components shown is not a requirement. More or fewer components may alternatively be implemented.

[0313] In this embodiment, the wireless communication unit 51 allows radio communication between the UE 50 and a base station or a network. The A / V input unit 52 is configured to receive audio or video signals. The user input unit 53 can generate key input data to control various operations of the UE 50 according to commands input by the user. The sensing unit 54 detects the current state of the UE 50, the position of the UE 50, the presence or absence of a user's touch input to the UE 50, the orientation of the UE 50, the acceleration or deceleration movement and direction of the UE 50, etc., and generates commands or signals for controlling the operation of the UE 50. The interface unit 57 serves as an interface through which at least one external device can be connected to the UE 50. The output unit 55 is configured to provide output signals in a visual, audio and / or tactile manner. The memory 56 can store software programs for processing and control operations performed by the processor 58, etc., or can temporarily store data that has been output or is to be output. The memory 56 can include at least one type of storage medium. Moreover, the UE 50 can cooperate with a network storage device that performs the storage function of the memory 56 through a network connection. The processor 58 generally controls the overall operation of the UE 50. The power supply unit 59 receives external power or internal power under the control of the processor 58 and provides appropriate power required to operate various elements and components.

[0314] The processor 58 executes at least one functional application and data processing by running the program stored in the memory 56, such as implementing the method provided in the embodiment of the present application.

[0315] Fig.14 A schematic diagram of the structure of a base station provided by an embodiment is shown. Fig.14 As shown, the base station includes a processor 60, a memory 61 and a communication interface 62; the number of processors 60 in the base station can be one or more. Fig.14 A processor 60 is taken as an example; the processor 60, the memory 61, and the communication interface 62 in the base station can be connected by a bus or other means. Fig.14 In the example of connecting via a bus, a bus refers to one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus structures.

[0316] The memory 61, as a computer-readable storage medium, can be configured to store software programs, computer executable programs and modules, such as program instructions / modules corresponding to the method in the embodiment of the present application. The processor 60 executes at least one functional application and data processing of the base station by running the software programs, instructions and modules stored in the memory 61, that is, implements the above-mentioned data transmission method.

[0317] The memory 61 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and at least one application required for a function; the data storage area may store data created according to the use of the terminal, etc. In addition, the memory 61 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 61 may include a memory remotely arranged relative to the processor 60, and these remote memories may be connected to the base station via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0318] The communication interface 62 may be configured to receive and send data.

[0319] An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method provided in any embodiment of the present application is implemented.

[0320] The computer storage medium of the embodiment of the present application may adopt any combination of one or more computer-readable media. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. The computer-readable storage medium includes (a non-exhaustive list): an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by an instruction execution system, device or device or used in combination with it.

[0321] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, the data signal carrying a computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0322] The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wire, optical cable, Radio Frequency (RF), etc., or any suitable combination of the foregoing.

[0323] Computer program code for performing the operations of the present disclosure may be written in one or more programming languages ​​or a combination of multiple programming languages, including object-oriented programming languages ​​such as Java, Smalltalk, C++, Ruby, Go, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0324] It will be appreciated by those skilled in the art that the term user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a vehicle-mounted mobile station.

[0325] In general, various embodiments of the present application can be implemented in hardware or dedicated circuits, software, logic or any combination thereof. For example, some aspects can be implemented in hardware, while other aspects can be implemented in firmware or software that can be executed by a controller, microprocessor or other computing device, although the present application is not limited thereto.

[0326] Embodiments of the present application may be implemented by executing computer program instructions by a data processor of a mobile device, for example in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0327] The block diagram of any logic flow in the drawings of the present application may represent program steps, or may represent interconnected logic circuits, modules and functions, or may represent a combination of program steps and logic circuits, modules and functions. A computer program may be stored on a memory. The memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as but not limited to read-only memory (ROM), random access memory (RAM), optical memory devices and systems (digital versatile discs DVD or CD discs), etc. Computer-readable media may include non-transient storage media. The data processor may be of any type suitable for the local technical environment, such as but not limited to a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (Digital Signal Processing, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a programmable logic device (Field-Programmable Gate Array, FGPA) and a processor based on a multi-core processor architecture.

Claims

1. A data transmission method, characterized in that: include: The first communication node receives first information sent by the second communication node, wherein the first information includes configuration information of transmission resources, wherein the configuration information of the transmission resources includes at least offset configuration information of frequency domain resource information of non-competitive random access resources, wherein the offset configuration information of frequency domain resource information of non-competitive random access resources includes N carriers, where N is a positive integer; if m is configured on each carrier i, i subcarrier resources, then the initial frequency domain resource group of non-contention random access resources includes M resources, The method further comprises: After receiving the first air interface transmission sent by the second communication node, the first communication node sends an air interface second transmission to the second communication node according to the initial frequency domain resources of the non-contention random access resources; The initial frequency domain resources of the non-contention random access resources are obtained by at least one of the following methods: The first communication node determines the offset of the frequency domain resource information of the non-contention random access resource according to the offset configuration information of the frequency domain resource information of the non-contention random access resource; the first communication node obtains the initial frequency domain resource of the non-contention random access resource from the initial frequency domain resource group of the non-contention random access resource according to the offset of the frequency domain resource information of the non-contention random access resource; The first communication node takes a modulo of M according to the terminal identifier to determine an initial frequency domain resource of the non-contention random access resource; When the number of carriers of the first transmission of the air interface is greater than M, the first communication node modulos M according to the carrier sequence number of the first transmission of the air interface monitored at the current moment, to determine the initial frequency domain resource of the non-competitive random access resource; When the number of carriers of the first transmission of the air interface is less than M, the first communication node takes the modulus of the number of carriers of the first transmission of the monitored air interface according to each resource sequence number in the initial frequency domain resource group of the non-competitive random access resources, and determines the initial frequency domain resources of the non-competitive random access resources.

2. The method according to claim 1, characterized in that The configuration information of the transmission resource also includes at least one of the following information: Offset configuration information for dedicated resources; Frequency domain resource information of non-contention random access resources; Monitoring the mapping relationship between the resources of the first transmission of the air interface and the non-contention random access resources; Offset configuration information of time domain resource information of non-contention random access resources; At least two sets of downlink transmission reception timer configuration information for different types of first communication nodes; Information on how random access resources are used.

3. The method according to claim 2, characterized in that The configuration information of the transmission resource includes the offset configuration information of the dedicated resource; the offset configuration information of the dedicated resource includes at least one of the length and value range parameters of the offset of the dedicated resource; the method further includes: The first communication node determines a valid value of the offset of the dedicated resource according to at least one of a length and a value range parameter of the offset of the dedicated resource; The first communication node determines the dedicated resource according to the effective value of the offset of the dedicated resource; After receiving the first air interface transmission (message 0) sent by the second communication node, the first communication node sends a second air interface transmission (message 1) to the second communication node according to the dedicated resources.

4. The method according to claim 2, characterized in that: The configuration information of the transmission resources includes the offset configuration information of the dedicated resources; the offset configuration information of the dedicated resources includes at least two sets of offset configuration information of dedicated resources for first communication nodes with different functions, and each set of offset configuration information of dedicated resources includes at least one of the length and value range parameters of the offset of the dedicated resources.

5. The method according to claim 4, characterized in that The function of using the dedicated resources is at least one of the following functions: handover, physical layer downlink control channel order (PDCCH order), advance data transmission EDT, origin-call advance data transmission MO-EDT, and termination-call advance data transmission MT-EDT; the function is one of the contents of the offset configuration information of the dedicated resources.

6. The method according to claim 2, characterized in that The dedicated resource includes: at least one of a non-contention random access resource, a dedicated random access resource, and a dedicated terminal identifier.

7. The method according to claim 6, characterized in that The non-competitive random access resource or the dedicated random access resource includes at least one of the following parameters: a random access prefix in an enhanced machine type communication eMTC system; a carrier number and a subcarrier number in a random access frequency domain resource in a narrowband Internet of Things NB-IoT system; a random access time domain resource; a random access resource based on single sideband SSB in a new radio access technology NR system; The dedicated terminal identifier includes at least one of the following parameters: a terminal-specific cell radio network temporary identifier C-RNTI; other types of radio network temporary identifiers RNTI.

8. The method according to claim 2, characterized in that: The configuration information of the transmission resource includes frequency domain resource information of the non-contention random access resource, and the frequency domain resource information of the non-contention random access resource includes at least one item of an initial carrier list and an initial subcarrier list; the initial carrier list includes N carriers, and the initial subcarrier list includes T subcarriers, where N and T are positive integers; The method further comprises at least one of the following methods: The first communication node determines the initial carrier sequence number of the non-contention random access resource by taking a modulo N according to the carrier sequence number of the first transmission of the air interface monitored at the current moment; after receiving the first transmission of the air interface sent by the second communication node, the first communication node sends the second transmission of the air interface to the second communication node according to the initial carrier sequence number of the non-contention random access resource; The first communication node determines the initial subcarrier number of the non-competitive random access resource by taking the modulus of T based on the subcarrier number of the first transmission of the air interface monitored at the current moment; after receiving the first transmission of the air interface sent by the second communication node, the first communication node sends the second transmission of the air interface to the second communication node based on the initial subcarrier number of the non-competitive random access resource.

9. The method according to claim 2, characterized in that: The configuration information of the transmission resource includes a mapping relationship between the resource for monitoring the first transmission of the air interface and the non-contention random access resource; the method further includes: The first communication node determines the non-contention random access resource according to a mapping relationship between a carrier for monitoring the first transmission of the air interface at the current moment and a resource for monitoring the first transmission of the air interface and the non-contention random access resource; After receiving the first air interface transmission sent by the second communication node, the first communication node sends a second air interface transmission to the second communication node based on the non-competitive random access resources, and the non-competitive random access resources at least include at least one of the initial carrier sequence number and the initial subcarrier sequence number of the non-competitive random access resources.

10. The method according to claim 2, characterized in that The transmission resource configuration information includes at least two sets of downlink transmission reception timer configuration information for different types of first communication nodes; each set of downlink transmission reception timer configuration information includes at least one of type information, timer length and timer start position offset; The type information is used to indicate whether the state of the first communication node is stationary or non-stationary, or to indicate whether the first communication node is always in one cell or moves from other cells; the timer starting position offset is set to the offset relative to the previous uplink transmission end position of the first communication node.

11. The method according to claim 2, characterized in that The configuration information of the transmission resource includes the usage information of the random access resource; the usage information of the random access resource includes at least one of the following information: Each usage information of the random access resource corresponds to a set of random access resources; The usage information of the random access resource is used to mark the coverage level of the random access resource; The usage information of the random access resource is used to mark the characteristics of the uplink transmission after the first communication node uses the random access resource to send the second transmission of the air interface; The method further comprises: After receiving the first air interface transmission sent by the second communication node, the first communication node selects a set of random access resources and sends a second air interface transmission to the second communication node.

12. The method according to claim 1, characterized in that The method further comprises: The first communication node obtains a transmission resource offset within a range of configuration information of the transmission resource; The first communication node determines a starting position X of a transmission resource, and superimposes the transmission resource offset offset on the starting position X to obtain an actually used transmission resource position (X+offset).

13. The method according to claim 12, characterized in that The transmission resources include at least one of the following resources: random access resources, competitive random access resources, non-competitive random access resources, scheduling-free resources, scheduling-free uplink transmission resources, and scheduling-free downlink transmission resources.

14. The method according to claim 12, characterized in that The starting position X is determined based on at least one of a terminal identifier and a cell identifier.

15. The method according to claim 12, characterized in that The method for the first communication node to obtain the transmission resource offset offset includes at least one of the following methods: The first communication node receives a transmission resource offset within a range of configuration information of the transmission resource and sent by the second communication node in a broadcast message or a dedicated message; The first communication node determines the transmission resource offset offset within the configuration information range of the transmission resource based on the terminal identifier or the cell identifier.

16. The method according to any one of claims 1, 3, 8-9, and 11, characterized in that: The method further comprises: The first communication node receives a third air interface transmission (message 2) sent by the second communication node; The first communication node sends an air interface fourth transmission (message 3) to the second communication node, and the air interface fourth transmission includes an identifier of the first communication node.

17. The method according to claim 16, characterized in that The identifier of the first communication node includes at least one of a non-access layer NAS identifier and a recovery identifier ID.

18. The method according to claim 16, characterized in that The first transmission of the air interface is a paging message; the second transmission of the air interface is at least one of a random access message and a random access prefix; the third transmission of the air interface is at least one of downlink data information, a random access response message, and a random access prefix response; the fourth transmission of the air interface is at least one of an uplink message and uplink data information.

19. The method according to claim 1, characterized in that The first information is at least one of a broadcast message, a dedicated message, a unicast message, and a configuration signaling.

20. The method according to claim 1, characterized in that The method further comprises: The first communication node receives a third air interface transmission (message 2) sent by the second communication node, wherein the third air interface transmission includes at least one of the following features: the third air interface transmission includes downlink data, and the third air interface transmission indicates that the first communication node sends high-volume uplink data to the second communication node; The first communication node sends a fourth air interface transmission (message 3) to the second communication node based on the third air interface transmission, and the fourth air interface transmission triggers a radio resource control RRC connection between the second communication node and the first communication node.

21. The method according to claim 20, characterized in that The fourth transmission of the air interface includes any one of an RRC connection establishment complete message, an RRC connection recovery complete message, and an RRC connection reconfiguration complete message.

22. The method according to claim 20, characterized in that The fourth transmission of the air interface also includes any one of an RRC connection establishment request message, an RRC connection recovery request message, and an RRC connection reconfiguration request message.

23. The method according to claim 22, characterized in that The method further comprises: The first communication node receives a fifth air interface transmission (message 4) sent by the second communication node, where the fifth air interface transmission includes any one of an RRC connection establishment message, an RRC connection recovery message, and an RRC connection reconfiguration message; The first communication node sends an air interface sixth transmission to the second communication node based on the air interface fifth transmission, and the air interface sixth transmission includes any one of an RRC connection establishment completion message, an RRC connection recovery completion message, and an RRC connection reconfiguration completion message.

24. The method according to any one of claims 20 to 23, characterized in that: The air interface fourth transmission includes an identification of the first communication node.

25. The method according to claim 24, characterized in that The identifier of the first communication node includes at least one of a non-access layer NAS identifier and a recovery identifier ID.

26. A data transmission method, characterized in that: include: The second communication node sends first information to the first communication node, wherein the first information includes configuration information of transmission resources, wherein the configuration information of the transmission resources includes at least offset configuration information of frequency domain resource information of non-competitive random access resources, wherein the offset configuration information of frequency domain resource information of non-competitive random access resources includes N carriers, where N is a positive integer; if m is configured on each carrier i i subcarrier resources, then the initial frequency domain resource group of non-contention random access resources includes M resources, The method further comprises: After sending the first air interface transmission to the first communication node, the second communication node receives the second air interface transmission sent by the first communication node according to the initial frequency domain resources of the non-competitive random access resources.

27. The method according to claim 26, characterized in that The configuration information of the transmission resource also includes at least one of the following information: Offset configuration information for dedicated resources; Frequency domain resource information of non-contention random access resources; Monitoring the mapping relationship between the resources of the first transmission of the air interface and the non-contention random access resources; Offset configuration information of time domain resource information of non-contention random access resources; At least two sets of downlink transmission reception timer configuration information for different types of first communication nodes; Information on how random access resources are used.

28. The method according to claim 27, characterized in that The configuration information of the transmission resource includes the offset configuration information of the dedicated resource; the offset configuration information of the dedicated resource includes at least one of the length and value range parameters of the offset of the dedicated resource; the method further includes: After sending a first air interface transmission (message 0) to the first communication node, the second communication node receives a second air interface transmission (message 1) sent by the first communication node according to dedicated resources.

29. The method according to claim 27, characterized in that The configuration information of the transmission resources includes the offset configuration information of the dedicated resources; the offset configuration information of the dedicated resources includes at least two sets of offset configuration information of dedicated resources for first communication nodes with different functions, and each set of offset configuration information of dedicated resources includes at least one of the length and value range parameters of the offset of the dedicated resources.

30. The method according to claim 29, characterized in that The function of using the dedicated resources is at least one of the following functions: handover, physical layer downlink control channel order (PDCCH order), advance data transmission EDT, origin-call advance data transmission MO-EDT, and termination-call advance data transmission MT-EDT; the function is one of the contents of the offset configuration information of the dedicated resources.

31. The method according to claim 27, characterized in that The dedicated resource includes: at least one of a non-contention random access resource, a dedicated random access resource, and a dedicated terminal identifier.

32. The method according to claim 31, characterized in that The non-competitive random access resource or the dedicated random access resource includes at least one of the following parameters: a random access prefix in an enhanced machine type communication eMTC system; a carrier number and a subcarrier number in a random access frequency domain resource in a narrowband Internet of Things NB-IoT system; a random access time domain resource; a random access resource based on single sideband SSB in a new radio access technology NR system; The dedicated terminal identifier includes at least one of the following parameters: a terminal-specific cell radio network temporary identifier C-RNTI; other types of radio network temporary identifiers RNTI.

33. The method according to claim 27, characterized in that The configuration information of the transmission resource includes frequency domain resource information of the non-contention random access resource, and the frequency domain resource information of the non-contention random access resource includes at least one item of an initial carrier list and an initial subcarrier list; the initial carrier list includes N carriers, and the initial subcarrier list includes T subcarriers, where N and T are positive integers; The method further comprises at least one of the following methods: After sending the first air interface transmission to the first communication node, the second communication node receives the second air interface transmission sent by the first communication node according to the initial carrier sequence number of the non-contention random access resource; After sending the first air interface transmission to the first communication node, the second communication node receives the second air interface transmission sent by the first communication node according to the initial subcarrier sequence number of the non-competitive random access resource.

34. The method according to claim 27, characterized in that The configuration information of the transmission resource includes a mapping relationship between the resource for monitoring the first transmission of the air interface and the non-contention random access resource; the method further includes: After sending the first air interface transmission to the first communication node, the second communication node receives the second air interface transmission sent by the first communication node according to the non-competitive random access resources, and the non-competitive random access resources at least include at least one of the initial carrier sequence number and the initial subcarrier sequence number of the non-competitive random access resources.

35. The method according to claim 27, characterized in that The transmission resource configuration information includes at least two sets of downlink transmission reception timer configuration information for different types of first communication nodes; each set of downlink transmission reception timer configuration information includes at least one of type information, timer length and timer start position offset; The type information is used to indicate whether the state of the first communication node is stationary or non-stationary, or to indicate whether the first communication node is always in one cell or moves from other cells; the timer starting position offset is set to the offset relative to the previous uplink transmission end position of the first communication node.

36. The method according to claim 27, characterized in that The configuration information of the transmission resource includes the usage information of the random access resource; the usage information of the random access resource includes at least one of the following information: Each usage information of the random access resource corresponds to a set of random access resources; The usage information of the random access resource is used to mark the coverage level of the random access resource; The usage information of the random access resource is used to mark the characteristics of the uplink transmission after the first communication node uses the random access resource to send the second transmission of the air interface; The method further comprises: After sending the first air interface transmission to the first communication node, the second communication node receives the second air interface transmission sent by the first communication node according to a set of random access resources selected.

37. The method according to any one of claims 26, 28, 33-34, 36, characterized in that: The method further comprises: The second communication node sends an air interface third transmission (message2) to the first communication node; The second communication node receives a fourth air interface transmission (message 3) sent by the first communication node, where the fourth air interface transmission includes an identifier of the first communication node.

38. The method according to claim 37, characterized in that The identifier of the first communication node includes at least one of a non-access layer NAS identifier and a recovery identifier ID.

39. The method according to claim 37, characterized in that The first transmission of the air interface is a paging message; the second transmission of the air interface is at least one of a random access message and a random access prefix; the third transmission of the air interface is at least one of downlink data information, a random access response message, and a random access prefix response; the fourth transmission of the air interface is at least one of an uplink message and uplink data information.

40. The method according to claim 26, characterized in that The first information is at least one of a broadcast message, a dedicated message, a unicast message, and a configuration signaling.

41. The method according to claim 26, characterized in that The method further comprises: The second communication node sends a third air interface transmission (message2) to the first communication node, wherein the third air interface transmission includes at least one of the following features: the third air interface transmission includes downlink data, and the third air interface transmission indicates that the first communication node sends high-volume uplink data to the second communication node; The second communication node receives a fourth air interface transmission (message 3) sent by the first communication node, and the fourth air interface transmission triggers a radio resource control RRC connection between the second communication node and the first communication node.

42. The method according to claim 41, characterized in that The fourth transmission of the air interface includes any one of an RRC connection establishment complete message, an RRC connection recovery complete message, and an RRC connection reconfiguration complete message.

43. The method according to claim 41, characterized in that The fourth transmission of the air interface also includes any one of an RRC connection establishment request message, an RRC connection recovery request message, and an RRC connection reconfiguration request message.

44. The method according to claim 43, characterized in that The method further comprises: The second communication node sends a fifth air interface transmission (message 4) to the first communication node, where the fifth air interface transmission includes any one of an RRC connection establishment message, an RRC connection recovery message, and an RRC connection reconfiguration message; The second communication node receives the sixth air interface transmission sent by the first communication node, and the sixth air interface transmission includes any one of an RRC connection establishment completion message, an RRC connection recovery completion message, and an RRC connection reconfiguration completion message.

45. The method according to any one of claims 41 to 44, characterized in that The air interface fourth transmission includes an identification of the first communication node.

46. ​​The method according to claim 45, characterized in that The identifier of the first communication node includes at least one of a non-access layer NAS identifier and a recovery identifier ID.

47. A data transmission device, characterized in that: include: A processor, wherein the processor is configured to implement the data transmission method as described in any one of claims 1 to 46 when executing a computer program.

48. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the data transmission method according to any one of claims 1 to 46 is implemented.

Images