A method and apparatus for wireless access

Abstract

The embodiment of the present application provides a wireless access method, characterized in that the method is suitable for a first type terminal device, and the method can include: determining a target frequency resource, the target frequency resource being one frequency resource in at least two first frequency resources, the first frequency resource being used for transmitting random access uplink data of the first type terminal device; and transmitting random access uplink data on the target frequency resource. In the present application, by determining the target frequency resource, the load on the data transmission frequency resource of the first type terminal device can be reduced while ensuring that the terminal device can transmit random access data, thereby avoiding the problem of excessive service load caused by the low bandwidth capability of the first type terminal device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication, and more particularly, to a method and apparatus for wireless access. BACKGROUND

[0002] In a communication process, since the service in the application scenario corresponding to the machine-type terminal device does not have a high requirement on the data transmission rate, the implementation specification can be reduced, thereby reducing the implementation cost. On the other hand, reducing the implementation cost of the machine-type terminal device also helps to expand the market of the machine-type terminal device and promote the development of the Internet of Things market.

[0003] However, in some scenarios, such as a new radio (NR) system, there is no interaction between the base station and the corresponding cell in the initial access stage, so the base station cannot obtain the type of the terminal device, such as the machine-type terminal device, and thus cannot determine the bandwidth capability of the terminal device. At the same time, since the base station cannot identify each machine-type terminal device, it is impossible to configure the data transmission frequency resource for each machine-type terminal device through the dedicated signaling of the terminal device, and thus the machine-type terminal device in the non-connected state aiming to establish a Radio Resource Control (RRC) connection with the network device will be concentrated in the same frequency range, which will cause an overload on the data transmission frequency resource in the non-connected state, especially when considering that the number of machine-type terminal devices is large, which will further increase the load on the data transmission frequency resource. SUMMARY

[0004] Embodiments of the present application provide a method and apparatus for wireless access, which can realize the shunting of service load in the scenario of a large number of first-type terminal devices, and ensure the performance of non-connected state data transmission.

[0005] In a first aspect, a method for wireless access is provided, which is applicable to a first-type terminal device, and the method comprises: determining a target frequency resource, the target frequency resource being one of at least two first frequency resources, the first frequency resource being used for transmitting random access uplink data of the first-type terminal device; and transmitting random access uplink data on the target frequency resource.

[0006] It should be understood that the first frequency resource can not only be a resource set for ensuring random access data transmission, but also be used for other data transmission.

[0007] It should be understood that the method for wireless access provided in the first aspect can be executed by a target terminal device, or can be executed by a communication apparatus or a chip in the target terminal device, which is not limited herein.

[0008] Based on the technical solution, by determining one of the at least two first frequency resources as a target resource and using the target resource for transmitting the random access uplink data of the first type terminal device, the problem of excessive service load caused by the low bandwidth capability of the first type terminal device can be avoided, and the transmission of random access uplink data by the terminal device can be ensured.

[0009] In some implementations of the first aspect, the target frequency resource is determined according to at least one of: a random access preamble resource used by the target terminal device in the random access procedure, wherein the target terminal device belongs to the first type terminal device; a number of random access preamble resources for the first type terminal device; and a number of the first frequency resources.

[0010] In some implementations of the first aspect, the target frequency resource is determined according to a correspondence between the random access preamble resource of the first type terminal device and the first frequency resource, and the random access preamble resource used in the random access procedure, wherein the correspondence between the random access preamble resource of the first type terminal device and the first frequency resource is from the network device.

[0011] Based on the technical solution, the target terminal device can determine the first frequency resource according to the random access preamble resource determined to be used in the initial access procedure and the association between the random access preamble resource and the first frequency resource. The advantage of determining the first frequency resource according to the random access preamble resource is that in some cases, unnecessary data transmission delay can be avoided.

[0012] In some implementations of the first aspect, the target frequency resource is determined according to a synchronization signal block and a correspondence between the synchronization signal block and the first frequency resource, wherein the correspondence between the synchronization signal block and the first frequency resource is from the network device.

[0013] Based on the technical solution, the target terminal device determines the target frequency resource according to the association between the first frequency resource and the synchronization signal block. The advantage of this is that the implementation is simple. In the NR system, the synchronization signal block can represent different beam directions, and the geographical distribution of the target terminal device in the system determines that the synchronization signal block beam directions selected by the target terminal devices in different geographical positions are different. Therefore, the data transmission frequency resources of different terminal devices can be naturally shunted, service load balancing can be achieved, and the data transmission efficiency on each data transmission frequency resource can be ensured. The network device can inform the first type terminal device of the above correspondence through broadcast information or RRC dedicated signaling, which is not limited in this application.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the target frequency resource is determined based on at least one of the following: a synchronization signal block determined during the initial access process; the number of synchronization signal blocks from the network device; and the number of the first frequency resources.

[0015] Based on the above technical solution, after the target terminal device determines that different synchronization signal blocks correspond to different data transmission frequency resources, it can determine the target frequency resource according to the selected synchronization signal block and the data transmission frequency resource corresponding to the synchronization signal block.

[0016] In conjunction with the first aspect, in some implementations of the first aspect, the size of each first frequency resource is determined based on the quantity of the first frequency resource and the second frequency resource, the second frequency resource being used to transmit random access uplink data of a second type of terminal device, the second type of terminal device having a different bandwidth capability than the first type of terminal device.

[0017] In conjunction with the first aspect, in some implementations of the first aspect, the location of each first frequency resource is determined based on the quantity of the first frequency resource and the frequency resource corresponding to the random access preamble resource for the second type of terminal device, wherein the second type of terminal device has a different bandwidth capability than the first type of terminal device.

[0018] The differences between the first type of terminal equipment and the second type of terminal equipment in this application include, but are not limited to, differences in bandwidth capability; that is, bandwidth capability is not a mandatory feature in this application.

[0019] In conjunction with the first aspect, in some implementations of the first aspect, the quantity of the first frequency resources is determined based on at least one of the following: the bandwidth of the system carrier; the frequency band in which the system carrier is located; the frequency resources used for transmitting random access uplink data of the second type of terminal device; and the transmission bandwidth used for downlink system information of the second type of terminal device.

[0020] The number of first frequency resources can be determined by any of the above resources and / or any combination of resources, and this application does not limit it.

[0021] In conjunction with the first aspect, in some implementations of the first aspect, the target frequency resource is determined based on indication information from the network device.

[0022] The instruction information may be delivered via broadcast or via RRC proprietary signaling; this application does not impose any limitation on this.

[0023] Secondly, a wireless access method is provided, applicable to network devices, the method comprising: determining a target frequency resource, the target frequency resource being one of at least two first frequency resources, the first frequency resources being used to transmit random access uplink data from a first type of terminal device; and receiving random access uplink data from a first type of terminal device on the target frequency resource.

[0024] It should be understood that the wireless access method provided in the second aspect can be executed by a network device, or by a communication device or chip in the network device, and this application does not limit it here.

[0025] Based on the above technical solution, by determining the target frequency resource among at least two first frequency resources, and receiving random access uplink data from the first type of terminal device on the target frequency resource, it is possible to ensure random access of the terminal device while effectively alleviating the pressure of excessive load on the data transmission frequency resource in the non-connected state caused by the fact that the first type of terminal devices, which aim to establish RRC connections with network devices in the non-connected state, are concentrated in one frequency range.

[0026] In conjunction with the second aspect, in some implementations of the second aspect, the target frequency resource is determined based on at least one of the following: the random access preamble resources used by the target terminal device during the random access process, wherein the target terminal device belongs to a first type of terminal device; the number of random access preamble resources used for the first type of terminal device; and the number of the first frequency resources.

[0027] In conjunction with the second aspect, in some implementations of the second aspect, the target frequency resource is determined based on the correspondence between the random access preamble resource of the first type of terminal device and the first frequency resource, as well as the random access preamble resource used in the random access process. The correspondence between the random access preamble resource of the first type of terminal device and the first frequency resource comes from the network device.

[0028] In conjunction with the second aspect, in some implementations of the second aspect, the target frequency resource is determined based on a synchronization signal block and the correspondence between the synchronization signal block and the first frequency resource, the correspondence between the synchronization signal block and the first frequency resource being derived from the network device.

[0029] In conjunction with the second aspect, in some implementations of the second aspect, the target frequency resource is determined based on at least one of the following: a synchronization signal block determined during the initial access process; the number of synchronization signal blocks from the network device; and the number of the first frequency resources.

[0030] In conjunction with the second aspect, in some implementations of the second aspect, the size of each first frequency resource is determined based on the quantity of the first frequency resource and the second frequency resource, the second frequency resource being used to transmit random access uplink data of a second type of terminal device, the second type of terminal device having a different bandwidth capability than the first type of terminal device.

[0031] In conjunction with the second aspect, in some implementations of the second aspect, the location of each first frequency resource is determined based on the quantity of the first frequency resource and the frequency resource corresponding to the random access preamble resource for the second type of terminal device.

[0032] In conjunction with the second aspect, in some implementations of the second aspect, the quantity of the first frequency resources is determined based on at least one of the following: the bandwidth of the system carrier; the frequency band in which the system carrier is located; the frequency resources used for transmitting random access uplink data of the second type of terminal device; and the transmission bandwidth used for downlink system information of the second type of terminal device.

[0033] In conjunction with the second aspect, in some implementations of the second aspect, the target frequency resource is determined based on indication information from the network device.

[0034] Thirdly, an apparatus for wireless access is provided, the apparatus being suitable for a first type of terminal device, comprising:

[0035] The processing module is configured to determine a target frequency resource, wherein the target frequency resource is one of at least two first frequency resources, and the first frequency resource is used to transmit random access uplink data of the first type of terminal device; the processing module is further configured to transmit random access uplink data on the target frequency resource.

[0036] Optionally, the device may further include a transceiver module and / or a storage module.

[0037] The beneficial effects of the above technical solution can be referred to the relevant description in the first aspect, and will not be repeated here for the sake of brevity.

[0038] In conjunction with the third aspect, in some implementations of the third aspect, the target frequency resources are determined based on at least one of the following: random access preamble resources used in the random access process; the number of random access preamble resources for the first type of terminal equipment; and the number of the first frequency resources.

[0039] In conjunction with the third aspect, in some implementations of the third aspect, the target frequency resource is determined based on the correspondence between the random access preamble resource of the first type of terminal device and the first frequency resource, as well as the random access preamble resource used in the random access process. The correspondence between the random access preamble resource of the first type of terminal device and the first frequency resource is configured by the network device.

[0040] In conjunction with the third aspect, in some implementations of the third aspect, the target frequency resource is determined based on a synchronization signal block and the correspondence between the synchronization signal block and the first frequency resource, and the correspondence between the synchronization signal block and the first frequency resource is configured by the network device.

[0041] In conjunction with the third aspect, in some implementations of the third aspect, the target frequency resource is determined based on at least one of the following: synchronization signal blocks determined during the initial access process; the number of synchronization signal blocks from the network device; and the number of the first frequency resources.

[0042] In conjunction with the third aspect, in some implementations of the third aspect, the size of each of the first frequency resources is determined based on the quantity of the first frequency resources and the second frequency resources, the second frequency resources being used to transmit random access uplink data of the second type of terminal devices, the second type of terminal devices having different bandwidth capabilities than the first type of terminal devices.

[0043] In conjunction with the third aspect, in some implementations of the third aspect, the location of each of the first frequency resources is determined based on the number of the first frequency resources and the frequency resources corresponding to the random access preamble resources for the second type of terminal devices, the second type of terminal devices having different bandwidth capabilities than the first type of terminal devices.

[0044] In conjunction with the third aspect, in some implementations of the third aspect, the quantity of the first frequency resources is determined based on at least one of the following: the bandwidth of the system carrier; the frequency band in which the system carrier is located; the frequency resources used for transmitting random access uplink data of the second type of terminal device, wherein the bandwidth capability of the second type of terminal device is different from that of the first type of terminal device; and the transmission bandwidth used for downlink system information of the second type of terminal device.

[0045] In conjunction with the third aspect, in some implementations of the third aspect, the target frequency resource is determined based on indication information from the network device.

[0046] Fourthly, an apparatus for wireless access is provided, the apparatus being suitable for network devices, comprising: a processing module for determining a target frequency resource, the target frequency resource being one of at least two first frequency resources, the first frequency resources being used to transmit random access uplink data from a first type of terminal device; the processing module is further configured to receive random access uplink data from a first type of terminal device on the target frequency resource.

[0047] Optionally, the device may further include a transceiver module and / or a storage module.

[0048] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the target frequency resources are determined based on at least one of the following: random access preamble resources used in the random access process; the number of random access preamble resources for the first type of terminal equipment; and the number of the first frequency resources.

[0049] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the target frequency resource is determined based on the correspondence between the random access preamble resource of the first type of terminal device and the first frequency resource, as well as the random access preamble resource used in the random access process, wherein the correspondence between the random access preamble resource of the first type of terminal device and the first frequency resource comes from the network device.

[0050] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the target frequency resource is determined based on a synchronization signal block and the correspondence between the synchronization signal block and the first frequency resource, wherein the correspondence between the synchronization signal block and the first frequency resource is derived from the network device.

[0051] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the target frequency resource is determined based on at least one of the following: synchronization signal blocks determined during the initial access process; the number of synchronization signal blocks from the network device; and the number of the first frequency resources.

[0052] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the size of each of the first frequency resources is determined based on the quantity of the first frequency resources and the second frequency resources, the second frequency resources being used to transmit random access uplink data of the second type of terminal devices, the second type of terminal devices having different bandwidth capabilities than the first type of terminal devices.

[0053] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the location of each of the first frequency resources is determined based on the number of the first frequency resources and the frequency resources corresponding to the random access preamble resources for the second type of terminal devices, the second type of terminal devices having different bandwidth capabilities than the first type of terminal devices.

[0054] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the quantity of the first frequency resources is determined based on at least one of the following: the bandwidth of the system carrier; the frequency band in which the system carrier is located; the frequency resources used for transmitting random access uplink data of the second type of terminal device, wherein the bandwidth capability of the second type of terminal device is different from that of the first type of terminal device; and the transmission bandwidth used for downlink system information of the second type of terminal device.

[0055] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the target frequency resource is determined based on indication information from the network device.

[0056] Fifthly, an apparatus for wireless access is provided, comprising a processor. The processor is coupled to a memory and can be used to execute instructions in the memory to implement the communication methods described in the first or second aspect and any possible implementation thereof. Optionally, the apparatus for wireless access further includes a memory. Optionally, the apparatus for wireless access further includes a communication interface, to which the processor is coupled, the communication interface being used for inputting and / or outputting information. The information includes at least one of instructions and data.

[0057] In one implementation, the device for wireless access is a network device. When the device for wireless access is a network device, the communication interface can be a transceiver or an input / output interface.

[0058] In another implementation, the device for wireless access is a chip or a chip system. When the device for wireless access is a chip or a chip system, the communication interface can be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip or chip system. The processor can also be a processing circuit or a logic circuit.

[0059] In another implementation, the device for wireless access is a chip or chip system configured in a network device.

[0060] Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0061] In a sixth aspect, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a communication device, causes the communication device to implement the first aspect or the second aspect, and the communication method in any possible implementation of the first aspect or the second aspect.

[0062] In a seventh aspect, a computer program product containing instructions is provided, which, when executed by a computer, cause a communication device to implement the communication method provided in the first or second aspect.

[0063] Eighthly, a communication system is provided, the communication system implementing the wireless access device provided in the third aspect or the wireless access device provided in the fourth aspect, and the wireless access device in any possible implementation of the third or fourth aspect. Attached Figure Description

[0064] Figure 1 A schematic diagram of a wireless communication system 100 applicable to embodiments of this application is shown.

[0065] Figure 2 Another schematic diagram of a wireless communication system 200 applicable to embodiments of this application is shown.

[0066] Figure 3 This diagram illustrates an architecture for data transmission in a random access phase system.

[0067] Figure 4 This diagram illustrates the resource load of a data transmission frequency resource.

[0068] Figure 5 A system architecture diagram for wireless access applicable to embodiments of this application is shown.

[0069] Figure 6 A schematic flowchart of a wireless access method applicable to embodiments of this application is shown.

[0070] Figure 7 A schematic diagram is shown for determining the size of a first frequency resource applicable to embodiments of this application.

[0071] Figure 8 Another schematic diagram is shown for determining the size of a first frequency resource applicable to embodiments of this application.

[0072] Figure 9 A schematic diagram is shown of a method for configuring random access preamble resources applicable to embodiments of this application.

[0073] Figure 10 A schematic diagram is shown for determining the location of a first frequency resource, applicable to embodiments of this application.

[0074] Figure 11 A schematic diagram is shown of a method for determining a first frequency resource applicable to embodiments of this application.

[0075] Figure 12Another schematic diagram of a method for determining a first frequency resource applicable to embodiments of this application is shown.

[0076] Figure 13 A schematic diagram of another method for determining a first frequency resource applicable to embodiments of this application is shown.

[0077] Figure 14 A schematic block diagram of a communication device provided in an embodiment of this application is shown.

[0078] Figure 15 A schematic architecture diagram of a communication device provided in an embodiment of this application is shown.

[0079] Figure 16 A schematic structural diagram of a communication device provided in an embodiment of this application is shown.

[0080] Figure 17 A schematic architecture diagram of a communication device provided in an embodiment of this application is shown. Detailed Implementation

[0081] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0082] The fifth-generation (5G) mobile communication technology, New Radio (NR), is a global 5G standard based on a completely new air interface design using Orthogonal Frequency Division Multiplexing (OFDM). It is also a very important foundation for the next generation of cellular mobile technology. 5G technology offers a wide variety of services, including Enhanced Mobile Broadband (eMBB), Ultra-Reliability Low-Latency Communication (URLLC), and Massive Machine-Type Communication (mMTC). mMTC services can include, for example, Industrial Wireless Sensor Network (IWSN), Video Surveillance, and Wearables.

[0083] Machine-type terminal devices often have higher requirements for cost and power consumption. For example, machine-type terminal devices are generally implemented at low cost because the business scenarios in which they are used do not have high requirements for data transmission rates. For instance, the data transmission rate of sensors under IWSN is sufficient to meet IWSN business needs with a data transmission rate of no more than 2Mbps. The data transmission rate of economical video surveillance cameras is generally 2-4Mbps. Terminal devices in wearable business, such as smartwatches, have a downlink peak rate of no more than 150Mbps and an uplink peak rate of no more than 50Mbps, which is far lower than the peak rate of NR legacy terminal devices (such as NR eMBB terminal devices). Based on this, machine-type terminal devices can have lower implementation specifications compared to NR legacy terminal devices, thereby reducing implementation costs. On the other hand, reducing the implementation cost of machine-type terminal devices also helps to expand the market for machine-type terminal devices and promote the development of the Internet of Things market. Currently, 3GPP has initiated research on NR-reduced capability (NR RedCap) devices under the NR system (reference: RP-193238). This aims to design a low-cost, low-complexity terminal device that meets the performance requirements of the growing IoT market, such as the aforementioned IWSN, video surveillance, and wearable services, thereby expanding the application of NR systems in the IoT market. For ease of description, the following sections of this article will use the NR RedCap UE as an example.

[0084] One way to reduce the cost of terminal equipment is to reduce its channel bandwidth, or in other words, its bandwidth capability. Specifically, the bandwidth capability of an NR RedCap UE can be significantly less than that of an NR legacy terminal equipment. Currently, NR Legacy terminal equipment, such as versions Rel-15 / Rel-16, must have a bandwidth capability of 100MHz. However, from the perspective of receiving the initial access signal from the NR base station and connecting to the NR system, the bandwidth capability of an NR RedCap UE can be as low as 20MHz. In some NR system configurations, the bandwidth capability of the NR RedCap UE can be further reduced, for example, to 5MHz or 10MHz. In this case, the NR RedCap UE can still connect to the NR system. A bandwidth capability of no more than 20MHz, compared to 100MHz, can significantly reduce the cost of the RedCap UE.

[0085] The technical solutions of this application can be applied to various communication systems, such as: 5th generation (5G) systems or new radio (NR), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, universal mobile telecommunication system (UMTS), etc. The technical solutions of this application can also be applied to device-to-device (D2D) communication, etc.

[0086] To facilitate understanding of the embodiments of this application, firstly, in conjunction with Figure 1 and Figure 2 The communication system applicable to the embodiments of this application is described in detail.

[0087] Figure 1 This is a schematic diagram of a wireless communication system 100 applicable to embodiments of this application. As shown, the wireless communication system 100 may include at least one network device, such as... Figure 1 The network device 111 shown, the wireless communication system 100 may also include at least one terminal device, such as Figure 1 The terminal devices 121 to 123 shown are network devices and terminal devices. Both network devices and terminal devices can be configured with multiple antennas, and network devices and terminal devices can communicate using multi-antenna technology.

[0088] In this system, when network devices and terminal devices communicate, the network device can manage one or more cells, and each cell can provide services to at least one terminal device. In one possible implementation, network device 111 and terminal devices 121 to 123 form a single-cell communication system, and without loss of generality, the cell is referred to as cell #1. Network device 111 can be a network device in cell #1, or in other words, network device 111 can provide services to terminal devices (such as terminal device 121) in cell #1.

[0089] It should be noted that a residential area can be understood as the area within the wireless signal coverage of network devices.

[0090] Figure 2 This is another schematic diagram of a wireless communication system 200 applicable to embodiments of this application. As shown in the figure, the technical solution of this application embodiment can also be applied to D2D communication. The wireless communication system 200 includes multiple terminal devices, such as... Figure 2Terminal devices 201 to 203 are included. Terminal devices 201 to 203 can communicate directly with each other. For example, terminal devices 201 and 202 can send data to terminal device 203 individually or simultaneously.

[0091] It should be understood that the above Figure 1 and Figure 2 This is merely an illustrative example and is not intended to limit the scope of the application. For instance, embodiments of this application can also be applied to random access scenarios (such as 5G NR random access procedures).

[0092] It should also be understood that the network equipment in this wireless communication system can be any device with wireless transceiver capabilities. This equipment includes, but is not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home base station (e.g., Home evolved Node B, or Home Node B, HNB), Base Band Unit (BBU), Access Point (AP), Wireless Relay Node, Wireless Backhaul Node, Transmission Point (TP), or Transmission and Reception Point (TRP) in a Wireless Fidelity (WIFI) system. It can also be a gNB in ​​a 5G system, such as NR, or a transmission point (TRP or TP), one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or a network node constituting a gNB or transmission point, such as a Base Band Unit (BBU) or a Distributed Unit (DU).

[0093] In some deployments, a gNB may include a centralized unit (CU) and a distribution unit (DU). A gNB may also include an active antenna unit (AAU). The CU implements some of the gNB's functions, and the DU implements others. For example, the CU handles non-real-time protocols and services, implementing radio resource control (RRC) and packet data convergence protocol (PDCP) layer functions. The DU handles physical layer protocols and real-time services, implementing radio link control (RLC), media access control (MAC), and physical (PHY) layer functions. The AAU implements some physical layer processing functions, radio frequency processing, and active antenna-related functions. Since RRC layer information ultimately becomes PHY layer information, or is derived from PHY layer information, in this architecture, higher-layer signaling, such as RRC layer signaling, can be considered to be sent by the DU, or by the DU+AAU. It is understood that network devices can be devices that include one or more of the following: CU nodes, DU nodes, and AAU nodes. In addition, the CU can be classified as a network device in the radio access network (RAN) or as a network device in the core network (CN), and this application does not limit this.

[0094] It should also be understood that the terminal equipment in this wireless communication system can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user device. In the embodiments of this application, the terminal equipment can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical care, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc. The embodiments of this application do not limit the application scenarios.

[0095] To facilitate understanding of the embodiments of this application, the following is a brief introduction to several terms used in this application. 1. Physical uplink control channel

[0096] The Physical Uplink Control Channel (PUCCH) carries uplink control information. Compared to LTE, NR PUCCH supports five different formats, which can be divided into short and long formats based on the number of symbols used in the time domain. The short format uses 1-2 symbols and can carry 1-2 bits of information, while the long format uses 4-14 symbols and can carry more than 2 bits of information. NR introduced the short format PUCCH to shorten the latency of Hybrid Automatic Repeat-Request Acknowledgement (HARQ-ACK) feedback, while the long format is chosen to ensure coverage due to its longer duration.

[0097] In NR, considering the flexibility of system configuration, all PUCCHs with two or more symbols can be configured for frequency hopping, including intra-slot and inter-slot frequency hopping. During frequency hopping, the number of symbols in the first hop is [number missing], and the remaining symbols are in the second hop.

[0098] The PUCCH format 0, 1, 3, and 4 all use low-PAPR sequences, which can reduce the peak-to-average power ratio of uplink transmission. The low-PAPR sequence is generated by cyclic shifting based on a basic sequence, and the basic sequence is divided into two cases depending on the sequence length.

[0099] 2. Physical uplink shared channel

[0100] The Physical Uplink Shared Channel (PUSCH) is used to carry data from the transport channel USCH. "Shared" means that the same physical channel can be used by multiple users in a time-sharing manner, or that the channel has a relatively short duration.

[0101] 3. Control resource set

[0102] The Control-Resource Set (CORESET) primarily indicates the number of symbols (time domain) and RBs (frequency domain) occupied by the Physical Downlink Control Channel. In other words, CORESET indicates the frequency domain resources including the PDCCH. A CORESET contains several PRBs, with a minimum of 6 in the time domain and 1-3 symbols. Each cell can be configured with multiple CORESETs (0-11), among which CORESET0 can be used for scheduling the Remaining Minimum System Information (RMSI) (also known as System Information Block Type 1, SIB1).

[0103] 4. Physical downlink control channel

[0104] The Physical Downlink Control Channel (PDCCH) carries scheduling and other control information, specifically including transmission format, resource allocation, uplink scheduling permission, power control, and uplink retransmission information. The PDCCH is a collection of physical resource particles that carries uplink and downlink control information. Depending on its scope, the information carried by the PDCCH can be divided into common control information (common search space) and dedicated control information (dedicated search space).

[0105] 5. Main Information Block

[0106] The Master Information Block (MIB) is sent first by the network-side device after power-on, followed by a series of System Information Block (SIB) messages. The MIB carries the most basic information, which involves decoding the Physical Downlink Shared Channel (PHS). The UE can only decode the MIB and use the parameters within it to continue decoding data in the PHS, including the SIB information.

[0107] 6. Wireless Resource Control Status

[0108] RRC states: There are three RRC states for terminal devices: RRC connected state, RRC idle state, and RRC inactive state.

[0109] RRC connected state (or simply connected state; in this article, "connected state" and "RRC connected state" are the same concept and the two terms can be used interchangeably): The terminal device has established an RRC connection with the network and can transmit data.

[0110] RRC idle state (or simply idle state; in this article, "idle state" and "RRC idle state" are the same concept and the two terms are interchangeable): The terminal device has not established an RRC connection with the network, and the base station has not stored the context of the terminal device. If the terminal device needs to transition from the RRC idle state to the RRC connected state, it needs to initiate an RRC connection establishment process.

[0111] RRC inactive state (or, can also be simply called inactive state. In this article, "deactivated state," "inactive state," "RRC inactive state," or "RRC deactivated state" are all the same concept and these terms are interchangeable): The terminal device previously entered the RRC connected state at the anchor base station, and then the anchor base station released the RRC connection, but the anchor base station saved the context of the terminal device. If the terminal device needs to re-enter the RRC connected state from the RRC inactive state, it needs to initiate an RRC connection recovery process (or RRC connection re-establishment process) at the currently camped base station. Because the terminal device may be in a mobile state, the base station currently camped by the terminal device and the anchor base station of the terminal device may be the same base station or different base stations. The RRC recovery process has shorter latency and lower signaling overhead than the RRC establishment process. However, the base station needs to save the context of the terminal device, which will consume the base station's storage overhead.

[0112] 7. System Message Block

[0113] System Information Blocks (SIBs) are system information broadcast by base stations. They come in various types, allowing them to be transmitted at different frequencies. There are a total of 19 types of SIBs, and their scheduling information is carried through MIBs or SBs.

[0114] To ensure data transmission with the NR base station, the terminal device needs to establish a connection with the NR base station through a random access procedure. This allows the NR base station to identify the terminal device and complete subsequent data transmission. Taking initial access as an example, in the idle state, the NR Legacy terminal device can achieve time-frequency synchronization with the NR base station and obtain the cell initial access configuration information corresponding to the NR base station, namely the system information block 1 (SIB1), by receiving the synchronization signal block (SSB) sent by the NR base station. Within SIB1, the terminal device is configured with the resources used to initiate random access, as well as continuous bandwidth resources including these random access resources. Currently, the protocol defines this continuous bandwidth resource as the uplink initial bandwidth part (BWP). The uplink initial BWP can be used for the physical uplink shared channel (PUSCH) for transmitting message 3 (Msg3) during random access, the physical uplink control channel (PUCCH) for transmitting message A (Msg A) during random access, and the physical uplink control channel (PUCCH) for transmitting hybrid automatic repeat request (HARQ) feedback. The HARQ feedback is either for message 4 (Msg4) or for message B (Msg B) during random access. In addition, the physical random access channel (PRACH) resources during random access must also be transmitted within the uplink initial BWP. Furthermore, terminal devices can also ensure data transmission performance with the base station during random access and RRC connection processes through PUCCH and PUSCH frequency hopping. The frequency ranges for both PUCCH and PUSCH frequency hopping must also be within the initial uplink BWP. Therefore, defining frequency ranges that include the aforementioned data transmission and frequency hopping resources is necessary for NR terminal devices to ensure the establishment of data transmission connections with the base station.

[0115] It should be understood that the form of the uplink initial BWP here can not only be used to guarantee the set of frequency resources for random access data transmission, but also for data transmission in other scenarios.

[0116] Furthermore, even if the terminal device enters the connected state, it will still complete data transmission based on the uplink initial BWP corresponding to the random access phase under certain conditions.

[0117] Based on the above description, for NR RedCap UEs, in order to ensure data transmission with the base station, it is also necessary to consider designing its uplink initial BWP specifically for RedCap UEs.

[0118] Figure 3 This is an architecture diagram for data transmission in a system during the random access phase. In existing technology, firstly, during the random access phase, the frequency resource configuration of the uplink initial BWP is included in the SIB1 information. Before receiving the SIB1 information, the data transmission between the terminal device and the base station is as follows: Figure 3 As shown, it can be observed that the terminal device does not send uplink information before receiving SIB1 information, meaning there is no interaction between it and the cell corresponding to the NR base station. Therefore, the NR base station (or network-side equipment) cannot determine the type of the terminal device, i.e., it is uncertain whether the terminal device receiving the SIB1 information is a terminal device with a bandwidth capability of 100MHz or a terminal device with a bandwidth capability of no more than 20MHz (such as an NR RedCap terminal device). This leads to the following problems in the existing technology:

[0119] (1) The uplink initial BWP bandwidth configured by the network device exceeds the bandwidth capacity of the NR RedCap UE, causing the NR RedCap terminal device to be unable to access the network.

[0120] For example, the initial uplink BWP includes PRACH resources. According to current protocols, the total PRACH resource bandwidth configured by network devices will exceed 20MHz. On the other hand, in NR systems, there is a correspondence between SSBs and PRACH resources (such as preambles). The UE can select the corresponding preamble to initiate random access based on the detected SSB and the correspondence between SSBs and preambles. The network device can determine the SSB beam direction detected by the UE initiating the preamble through the received preamble. Before establishing a radio resource control (RRC) connection with the UE, it sends downlink data to the UE through the SSB beam direction corresponding to the preamble, thus ensuring downlink data transmission performance. However, since the total PRACH resource bandwidth configured by the network device will exceed 20MHz, NRRedCap UEs may be unable to select the PRACH resource corresponding to the optimal SSB beam direction, thereby affecting RedCap UE data transmission performance and even preventing RedCap UEs from accessing the network.

[0121] (2) Limiting the uplink initial BWP bandwidth corresponding to the NR Legacy UE affects the initial access performance of the NR Legacy UE.

[0122] Network devices, considering the potential presence of NR RedCap UEs in the system, can configure the uplink initial BWP bandwidth to a value no greater than the bandwidth capacity of the NR RedCap UE. This ensures RedCap UE access, but it limits the performance of Legacy UE access. For example, as mentioned above, the UE can determine the frequency hopping resource range of the uplink transmission channel based on the size of the uplink initial BWP. Limiting the uplink initial BWP bandwidth reduces the frequency hopping resource range of the uplink transmission channel, affecting data transmission performance. Furthermore, configuring the uplink initial BWP bandwidth based on NR RedCap UEs also affects the access capacity of legacy UEs. For instance, for NR Legacy UEs, the uplink initial BWP can be configured up to 100MHz. However, if NR RedCap UEs and NR Legacy UEs share the uplink initial BWP, the bandwidth can only be configured up to 20MHz. This reduction in uplink initial BWP bandwidth decreases the access capacity of NR Legacy UEs.

[0123] Figure 4This diagram illustrates the resource load of a data transmission frequency resource. The first type of terminal device can be a low-cost, low-bandwidth terminal device, such as an NR RedCap UE, while the second type of terminal device can be a traditional terminal device (NR Legacy UE, such as an NR eMBB UE). As shown, due to the bandwidth limitations of the first type of terminal device, the data transmission frequency resources used in the connectionless state cannot exceed the bandwidth capacity of the first type of terminal device. This means that in the connectionless state, such as the initial access phase, data transmission between the network device and the first type of terminal device can only be concentrated within the frequency range corresponding to the bandwidth capacity of the first type of terminal device. Considering that in the connectionless state, such as the initial access phase, the network device cannot yet identify each first type of terminal device, it cannot individually configure data transmission frequency resources for each first type of terminal device through dedicated signaling. Consequently, in the connectionless state, all first type of terminal devices aiming to establish an RRC connection with the network device will be concentrated within a single frequency range, such as 20MHz. Considering that in the disconnected state, this 20MHz band includes transmissions on channels such as preamble transmission, Msg3 transmission during random access, and HARQ-ACK transmission for Msg4, and that connected terminal devices may, under certain conditions, fall back to the data transmission frequency resources corresponding to the disconnected state to complete data transmission with the network device, this can lead to excessive load on the data transmission frequency resources in the disconnected state. This is especially true when considering the large number of connections for the first type of terminal devices, which will further increase the load on the data transmission frequency resources. For the second type of terminal devices, the above problem does not exist because their mandatory bandwidth capability is 100MHz, allowing the network device to configure a wider range of data transmission frequency resources.

[0124] The differences between the first terminal device and the second terminal device include at least one of the following:

[0125] 1. Different bandwidth capabilities. For example, the second type of terminal equipment can support data transmission using 100MHz of frequency domain resources and network devices on a single carrier at the same time, while the first type of terminal equipment can support data transmission using 20MHz, 10MHz, or 5MHz of frequency domain resources and network devices on a single carrier at the same time.

[0126] 2. The number of transmitting and receiving antennas differs. For example, the minimum supported antenna configuration for the second type of terminal device is 4 transmit and 2 receive, meaning that in the minimum antenna configuration, 4 receive antennas are used to receive downlink data and 2 transmit antennas are used to transmit uplink data; while the maximum supported antenna configuration for the first type of terminal device is less than 4 transmit and 2 receive. For example, the first type of terminal device UE only supports 2 receive and 1 transmit, or it can also support 1 receive and 1 transmit, or it can also support 2 receive and 2 transmit.

[0127] 3. The maximum uplink transmit power differs. For example, the maximum uplink transmit power of a second type of terminal device can be 23dBm or 26dBm, while the maximum uplink transmit power of a first type of terminal device can be a value between 4dBm and 20dBm.

[0128] 4. The protocol versions corresponding to the first type of terminal equipment and the second type of terminal equipment are different. For example, NR Rel-15 and NR Rel-16 terminal equipment can be considered as second type terminal equipment, while the first type of terminal equipment can be considered as NR Rel-17 terminal equipment.

[0129] 5. The carrier aggregation (CA) capabilities supported by Type 1 and Type 2 terminal devices differ. For example, Type 2 terminal devices can support carrier aggregation, while Type 1 terminal devices do not. Alternatively, both Type 1 and Type 2 terminal devices may support carrier aggregation, but the maximum number of carrier aggregations simultaneously supported by Type 2 terminal devices is greater than that supported by Type 1 terminal devices. For instance, Type 2 terminal devices can support aggregation of up to 5 or 32 carriers simultaneously, while Type 1 terminal devices support aggregation of up to 2 carriers simultaneously.

[0130] 6. Type II terminal devices support Frequency Division Duplex (FDD), while Type I terminal devices support half-duplex FDD. Type I and Type II terminal devices differ in their data processing time capabilities. For example, the minimum latency between receiving downlink data and sending feedback on that downlink data for Type II terminal devices is less than that for Type I terminal devices. Similarly, the minimum latency between sending uplink data and receiving feedback on that uplink data for Type II terminal devices is less than that for Type I terminal devices.

[0131] 7. The processing capabilities of Type 2 terminal devices differ from those of Type 1 terminal devices. Type 1 terminal devices have lower processing capabilities than Type 2 terminal devices. For example, their data processing time capabilities differ. For instance, the minimum latency between receiving downlink data and sending feedback on that downlink data is less for Type 2 terminal devices than for Type 1 terminal devices. Similarly, the minimum latency between sending uplink data and receiving feedback on that uplink data is less for Type 2 terminal devices than for Type 1 terminal devices. Furthermore, the maximum transmission block size (TBS) that Type 1 terminal devices can handle is less than the TBS that Type 2 terminal devices can handle. For example, the maximum downlink modulation order (e.g., 64QAM) that the first type of terminal device can handle is less than the maximum downlink modulation order (e.g., 256QAM) that the second type of terminal device can handle, and / or the maximum uplink modulation order (e.g., 64QAM or 16QAM) that the first type of terminal device can handle is less than the maximum uplink modulation order (e.g., 256QAM or 64QAM) that the second type of terminal device can handle. For example, the number of hybrid automatic repeat reQuest (HARQ) requests supported by the first type of terminal device is less than the number of HARQ requests supported by the second type of terminal device.

[0132] 8. The peak uplink (or downlink) transmission rate of the second type of terminal device is different from that of the first type of terminal device. The peak uplink (or downlink) transmission rate of the first type of terminal device is lower than that of the second type of terminal device.

[0133] In this embodiment of the application, the first type of terminal device is NR RedCap terminal device as an example.

[0134] Figure 5 A system architecture diagram for wireless access applicable to embodiments of this application is shown. As shown, the network device and terminal device of this application are connected via an air interface.

[0135] In this application, the terminal device includes a device that provides voice and / or data connectivity to a user, such as a handheld device with wireless connectivity or a processing device connected to a wireless modem. More specifically, it may be an LTE terminal, a 5G terminal, or a UE.

[0136] Network equipment, including access network (AN) equipment such as base stations (e.g., access points), can refer to equipment in the access network that communicates with wireless terminal equipment over the air interface via one or more cells. Optionally, examples could be: LTE eNB / HeNB / Relay / Femto / Pico, 5G base stations.

[0137] Description of terminal equipment: In this application, terminal equipment may also include relays and network devices that can perform data communication, all of which can be regarded as terminal equipment.

[0138] In this application, a cell can be understood as a carrier wave.

[0139] It should be noted that although this application describes a low-capability, low-cost, or low-complexity terminal device as an example, the listed implementation methods are also applicable to other types of terminal devices, such as NR Rel-17 or later terminal devices. For ease of description, this application uses an NR RedCap UE as an example.

[0140] It should be noted that in this application, the data transmission frequency resources, or the maximum frequency resources used for PUSCH transmission, the maximum frequency resources used for PUCCH transmission, and the maximum frequency resources used for NR RedCap UE preamble transmission are all composed of consecutive resource blocks (RBs).

[0141] The embodiments provided in this application will now be described in detail with reference to the accompanying drawings.

[0142] Figure 6 This is a schematic flowchart of a wireless access method applicable to embodiments of this application. Method 600 may include the following steps.

[0143] In the following embodiments, for distinction and without loss of generality, a first device is used to represent a network device, and a second device is used to represent a first type of terminal device (e.g., an NR RedCap UE).

[0144] It should be understood that the first device may also take other forms. For example, both the first and second devices may be type 1 terminal devices, or the first device may also be a type 2 terminal device (NR Legacy UE, such as NR eMBBUE), and the second device may be a type 1 terminal device. No limitation is made here.

[0145] It should be understood that in this application, the main difference between the first type of terminal device and the second type of terminal device lies in their bandwidth capabilities. However, in specific implementation, the difference between the first type of terminal device and the second type of terminal device is not limited to the difference in bandwidth capabilities. They may also have the distinguishing features described above. That is, the difference in bandwidth capabilities is not a mandatory distinguishing feature.

[0146] S601 The first device determines the set of frequency resources.

[0147] It should be understood that in some specific embodiments, when the first device can directly determine the target frequency resource, this step is optional. The first device can directly determine the target frequency resource and instruct the second device through indication information. The target frequency resource is one of at least two first frequency resources, which are used to transmit random access uplink data from the first type of terminal device.

[0148] It should be understood that, for the sake of clarity, the concept of a frequency resource set is introduced in this application embodiment. That is, a frequency resource set is a resource set of at least two first frequency resources. In the specific implementation process, the essence of the first device determining the frequency resource set is to determine at least two first frequency resources, which is unrelated to whether the at least two first frequency resources are a resource set in a specific form. It should be noted that the concept of a resource set in this application embodiment does not limit the form of a set of at least two first frequency resources, nor does it limit the at least two first frequency resources to have a set identifier. The at least two first frequency resources can be continuous or scattered, and are collectively referred to as a resource set only for ease of explanation.

[0149] In the initial access configuration information, the first device configures frequency resources for transmitting random access uplink data of the second device. This random access uplink data includes at least one of the following: a preamble sequence transmitted during random access, Msg 3 transmitted during random access, Msg A transmitted during random access, HARQ-ACK transmission for Msg 2 during random access, and HARQ-ACK transmission for Msg B during random access. This frequency resource consists of consecutive frequency domain resource units (such as REs or RBs). These frequency domain resource units can be represented by subcarriers, resource elements (REs), resource blocks (RBs), or other frequency domain resource units. The frequency resource used for transmitting random access uplink data in this application can be referred to as the bandwidth part (BWP) or the initial uplink BWP.

[0150] It should be noted that, in this application, the frequency resources used for transmitting random access uplink data of the second device can also be used for transmitting random access uplink data of the second type of terminal device. For example, the BWP configured by the first device for the second device for random access uplink data may include resources for transmitting random access uplink data of the second type of terminal device.

[0151] Optionally, the first device may also configure frequency resources for transmitting random access uplink data of the second type of terminal device. It should be noted that when the first device configures frequency resources for transmitting random access uplink data of the second device and frequency resources for transmitting random access uplink data of the second type of terminal device, the frequency resources for transmitting random access uplink data of the second device and the frequency resources for transmitting random access uplink data of the second type of terminal device may be frequency division multiplexing (FDM), or the frequency domain resources may partially overlap, or the frequency resources for transmitting random access uplink data of the second type of terminal device may include the frequency resources used for transmitting random access uplink data of the second device.

[0152] For example, in this application, the network device configures a set of BWPs (corresponding to a set of frequency resources) for NR RedCap terminal devices to transmit random access uplink data. This set includes at least two uplink initial BWPs. The at least two uplink initial BWPs can be used only for NR RedCap terminal devices to transmit random access uplink data, or one of the at least two uplink initial BWPs is a BWP used for NR Legacy terminal devices to transmit random access uplink data, that is, the uplink initial BWP corresponding to the NR Legacy terminal device.

[0153] For example, the first device will determine a set of frequency resources, wherein the set of frequency resources includes at least two first frequency resources, the first frequency resources being used to transmit random access uplink data of the first type of terminal device, and the target frequency resource being one of the frequency resources in the set of frequency resources.

[0154] Furthermore, after determining the frequency resource set, the first device can notify the second device of the frequency resource set through broadcast information notification or RRC proprietary signaling, which is not limited in this application.

[0155] S602 The first device sends an instruction message to the second device.

[0156] For example, the first device sends indication information that indicates parameters of the frequency resource set.

[0157] For example, the indication information can be used to indicate at least one of the following parameters: the number of first frequency resources included in the frequency resource set, the frequency domain location of the first frequency resources included in the frequency resource set, and the size of the resource block of the first frequency resources included in the frequency resource set. The second device can determine the frequency domain configuration parameters of the first frequency resources included in the frequency resource set based on the above indication information. The parameters of the frequency resource set may also include other configurations, such as configuration information for the transmission of the physical uplink shared channel (PDSCH) and / or the configuration information for the transmission of the physical uplink control channel (PUCCH) included in the frequency resources.

[0158] For example, the first device sends an indication message indicating at least two BWP configuration messages for transmitting random access uplink data of the second device.

[0159] It should be understood that the first frequency resource in this application may correspond to a BWP.

[0160] It should be understood that the initial uplink BWP of the second device can be a first frequency resource. This first frequency resource can be a frequency resource that guarantees random access data, or a frequency resource that transmits other data.

[0161] In one possible implementation, the first device may notify the second device of at least two first frequency resources by broadcasting information.

[0162] Specifically, the first device can indicate at least two first frequency resources to the second device through the Location And Bandwidth for RedCap UE included in SIB1. That is, the first device can directly indicate the frequency resources (e.g., the uplink initial BWP corresponding to the NR RedCap terminal device) used for the second device's random access uplink data transmission to the second device through SIB1. For example, if the frequency resource set includes N first frequency resources, and each first frequency resource can include frequency resources used for the second device's random access uplink data transmission, then the first device can directly indicate the configuration information of the first frequency resources included in the frequency resource set to the second device through the Location And Bandwidth for RedCap UE in SIB1.

[0163] It should be understood that the broadcast information here can be information carried by the physical broadcast channel (PBCH), such as information included in the MIB, or information included in the control information transmitted by the scheduling system information block (SIB) or information included in the SIB information. The control information transmitted by the scheduling SIB can be carried in the PDCCH, and the SIB information can be carried in the PDSCH.

[0164] In one possible implementation, the first device can notify the second device of the number N of the first frequency resources included in the frequency resource set via broadcast information. Besides direct indication via SIB1 or other SIBs, it can also be indicated via information carried by the PBCH. Further optionally, when notifying via information carried by the PBCH, N can be indicated via a reserved bit in the MIB or a reserved bit corresponding to the SSB index. For example, in a frequency range not exceeding 6 GHz (frequency range 1, FR1), the reserved bit corresponding to the SSB index has 2 bits. These 2 bits, or one of them, can indicate the number N of the first frequency resources, where N is an integer greater than or equal to 2. On the other hand, in FR2 (above 6 GHz), due to the greater number of beam directions, the reserved bit of the corresponding SSB index is 0. However, considering the initial access, the bandwidth capability of the second device is no less than 50 MHz or 100 MHz. In this case, only one first frequency resource can be defined for the second device, or the second device and the second type of terminal device can share the uplink initial BWP. Therefore, on FR2, defining a frequency resource set for the second device is not necessary. That is, preferably, in this scheme, only for FR1, for the second device, a frequency resource set is defined, and the parameters of this frequency resource set can be indicated by the reserved bit of the corresponding SSB index.

[0165] In one possible implementation, the first device may indicate a set of frequency resources to the second device via RRC proprietary signaling.

[0166] Specifically, when the second device falls back to the RRC inactive state, the first device can configure a frequency resource set through RRC dedicated signaling. This allows the second device to transmit data with the first device through one of the frequency resources in the frequency resource set used for transmitting random access uplink data of the first type of terminal device when the device is in a non-connected state.

[0167] S603 The second device determines the target frequency resource.

[0168] To ensure data transmission with the first device, the second device needs to establish a connection with the first device through a random access procedure. This allows the first device to identify the second device and complete subsequent data transmission. Taking initial access as an example, when the second type of terminal device is in an idle state, it can achieve time-frequency synchronization with the first device and obtain the initial access configuration information of the cell corresponding to the first device by receiving information sent by the first device.

[0169] For example, the second device can determine a target frequency resource from at least two first frequency resources by determining at least two first frequency resources.

[0170] It should be understood that the second device can determine at least two first frequency resources not only based on the indication information sent by the first device, but also based on the association relationship with other resources in the system. This application does not limit this.

[0171] In one possible implementation, the second device may determine at least two first frequency resources based on the indication information received from the first device.

[0172] Specifically, the number N of the first frequency resources can be associated with the transmission bandwidth used for downlink system information of the second type of terminal equipment; the larger the bandwidth, the larger the number N.

[0173] Specifically, the quantity N of the first frequency resources can be associated with the frequency resources used for transmitting random access uplink data of the second type of terminal devices. The network device notifies the configuration information of the frequency resources used for transmitting random access uplink data of the second type of terminal devices (e.g., the configuration information of the uplink initial BWP used for transmitting random access uplink data of the second type of terminal devices) via SIB1. The first type of terminal device determines the quantity N of the first frequency resources according to a preset rule (i.e., the association between the quantity N of the first frequency resources and the frequency resources used for transmitting random access uplink data of the second type of terminal devices). The larger the frequency resources used for transmitting random access uplink data of the second type of terminal devices, the larger the quantity N of the first frequency resources.

[0174] Specifically, the quantity N of the first frequency resources can be associated with the carrier bandwidth notified by the network device or with the frequency band where the system carrier is located. For example, the network device notifies the terminal device of the system carrier bandwidth information through SIB1, and the second device determines the quantity N of the first frequency resources based on the correlation between the quantity N of the first frequency resources and the system carrier bandwidth. The larger the system carrier bandwidth, the larger the quantity N of the first frequency resources.

[0175] It should be understood that the second device may determine the number N of the first frequency resources based on one or more of the following: the bandwidth of the system carrier, the frequency band in which the system carrier is located, the frequency resources used for transmitting random access uplink data of the second type of terminal device, and the transmission bandwidth used for transmitting downlink system information of the second type of terminal device. This application does not impose any limitations on these determinations. The transmission bandwidth used for transmitting downlink system information of the second type of terminal device may be the transmission bandwidth of the downlink initial BWP corresponding to the second type of terminal device, for example, the frequency domain resources corresponding to CORESET#0 indicated by the pdcch-ConfigSIB1 control field in the MIB.

[0176] Specifically, the first device sends an indication message, and the second device determines the quantity of the first frequency resource in the frequency resource set based on the indication message. The indication message can take the form of a broadcast notification or RRC dedicated signaling. For details on the form of broadcast notification or RRC dedicated signaling, please refer to S602; for brevity, it will not be elaborated here.

[0177] In another possible implementation, the second device determines the first frequency resource based on the quantity of the first frequency resource.

[0178] Specifically, the second device can determine at least one first frequency resource in the frequency resource set based on the number N of the first frequency resources and the frequency resources used for transmitting random access uplink data of the second type of terminal device, for example, determining the frequency position of each first frequency resource.

[0179] For example, Figure 7 This is a schematic diagram illustrating the determination of the size of a first frequency resource applicable to embodiments of this application, such as a schematic diagram illustrating the determination of the size of a resource block of the first frequency resource. As shown in the figure, the first device notifies the second device via indication information to determine the number N of the first frequency resources, where N is an integer greater than or equal to 2. The second device determines the size of the resource block of each of the N first frequency resources in the disconnected state based on the number N of the first frequency resources and the frequency resources used for transmitting random access uplink data of the second type of terminal device, where N = 2.

[0180] Suppose that the frequency resources used for transmitting random access uplink data of the second type of terminal equipment include M consecutive RBs, where M is an integer greater than or equal to 1. If M is divisible by N, the size of the resource block of each first frequency resource can be M / N RBs. If M is not divisible by N, the size of the resource block of N-1 of the first frequency resources is ceiling(M / N) or floor(M / N), and the size of the resource block of the other first frequency resource is M-(N-1)*ceiling(M / N) or M-(N-1)*floor(M / N), where ceiling(M / N) represents an integer greater than M / N and closest to M / N, and floor(M / N) represents an integer less than M / N and closest to M / N. In this embodiment, the start or end point of the first frequency resource can be aligned with the start or end point of the frequency resource used for transmitting random access uplink data of the second type of terminal device (e.g., the uplink initial BWP corresponding to the second type of terminal device). Then, the end or start point of the first frequency resource is determined using the determined size of the resource block of the first frequency resource. Figure 7 For example, the starting point (or ending point) of the first frequency resource #1 is aligned with the starting point of the frequency resource used to transmit random access uplink data of the second type of terminal device. The resource block size of the first frequency resource #1 is determined in the above manner. Combining these two features, the second device can determine the ending point (or starting point) of the first frequency resource #1. The second frequency resource has the same description method and will not be elaborated further.

[0181] Figure 8 This is another schematic diagram illustrating the determination of the size of the first frequency resources applicable to embodiments of this application. As shown in the figure, the second device, based on the number N of the first frequency resources and the frequency resources used for transmitting random access uplink data of the second type of terminal device, can also be understood as the second device determining N first frequency resources that can be used for data transmission in the non-connected state based on the number N of the first frequency resources and a portion of the frequency resources used for transmitting random access uplink data of the second type of terminal device. The determination of the size of the resource block of each first frequency resource is as described above, and the determination of the start or end point of each first frequency resource is similar to the above description, except that here the start or end point of the frequency resources used for transmitting random access uplink data of the second type of terminal device needs to be replaced with the start or end point of a portion of the frequency resources used for transmitting random access uplink data of the second type of terminal device. For simplicity, this will not be elaborated upon here.

[0182] It should be noted that, in this embodiment of the application, the resource block size of the first frequency resource included in the frequency resource set can be the resource block size corresponding to the bandwidth capability of the second device. For example, the bandwidth of the first frequency resource can be 20MHz, 10MHz, or 5MHz. The start or end point of the first frequency resource can be determined by the number N of the first frequency resource and the frequency resource used for transmitting random access uplink data of the second type of terminal device, or a portion of the frequency resource used for transmitting random access uplink data of the second type of terminal device.

[0183] For example, the second device can determine the position of each first frequency resource in the frequency resource set based on the number N of first frequency resources and the number of random access preamble (RACH) resources. The random access preamble resource indicates at least one of the following: the code resource, time resource, and frequency resource corresponding to the preamble sequence transmitted by the terminal device. For example, the code resource corresponding to the preamble sequence can be represented by the preamble root sequence and a cyclic shift; the frequency resource corresponding to the preamble sequence can be represented by a frequency division multiplexing (FDMed RACH) occasion (FDMed RO); and the time resource corresponding to the preamble sequence can be represented by a RACH slot and / or a RACH period. The random access preamble resource can be a resource that the network device can pre-configure for the first type of terminal device, or it can pre-configure for the first device for a second type of terminal device; this is not limited here.

[0184] In this approach, the explanation of broadcast information and RRC proprietary signaling is the same as described above, and will not be repeated for the sake of brevity.

[0185] Figure 9 This is a schematic diagram of a method for configuring random access preamble resources applicable to embodiments of this application. The second device can determine the locations of N first frequency resources based on the number K of frequency domain multiplexing (FDM) RACH occasions (ROs) included in the RACH resources and the number N of first frequency resources. In an NR system, the RACH resource configuration is as follows... Figure 9As shown, a RACH configuration period includes at least one time RACH occasion, and a time RACH occasion includes at least one and at most eight FDMed ROs. The diagram uses K=4 as an example, meaning that an FDMed RO can represent the frequency resource location corresponding to a RACH resource. The frequency resource location information of the first frequency resource includes at least two of the following: the start location, the end location, and the bandwidth location.

[0186] Figure 10 This is a schematic diagram illustrating the determination of the location of a first frequency resource applicable to embodiments of this application. As shown in the figure, assuming the index corresponding to the FDMed ROs is 0 to K-1 (for simplicity, the index corresponding to the FDMed ROs is represented by RO index), the RO index corresponding to RO index mod(ceil(K / N)) = 0 can be used as the starting point of a first frequency resource, where ceil(K / N) can also be represented by floor(K / N). For example, if K = 4 and N = 2, then the RO index that satisfies RO index mod(ceil(4 / 2)) = 0 can be 0 or 2. Then the starting points of the two first frequency resources can be the frequency position corresponding to the lowest RB of the frequency resource corresponding to RO index = 0 (frequency position 1) and the frequency position corresponding to the lowest RB of the first frequency resource corresponding to RO index = 2 (frequency position 2). Correspondingly, the ending point of the first frequency resource starting from frequency position 1 can be frequency position 2, and the ending point of the first frequency resource starting from frequency position 2 can be the frequency position corresponding to the highest RB of the frequency resource corresponding to RO index K-1 (frequency position 3). Alternatively, the ending point of the first frequency resource starting from frequency position 2 can also be the frequency position corresponding to the highest RB of the frequency resource including the uplink initial BWP of FDMed RO (frequency position 4, here it is assumed that the size of the frequency resources included between frequency position 2 and frequency position 4 does not exceed the bandwidth capability of the second device).

[0187] For example, the RO index corresponding to RO index mod(ceil(K / N)) = 0 can be used as the starting point of the first frequency resource. The ending point of this first frequency resource can be determined based on the bandwidth capability of the second device (i.e., the frequency bandwidth between the starting and ending points of the first frequency resource determined in this way is equal to the bandwidth capability of the second device); or, the ending point of this first frequency resource can also be determined based on the boundary of the initial BWP including the FDMed RO, while ensuring that the frequency bandwidth between the starting and ending points of the data transmission frequency is not greater than the bandwidth capability of the second device; or, the ending point of this first frequency resource can also be the frequency position corresponding to the highest RB or the lowest RB of another frequency resource corresponding to the RO index. It should be noted that the magnitude relationship between the absolute frequencies corresponding to the starting and ending points of the first frequency resource is not limited, that is, the absolute frequency corresponding to the starting point of the first frequency resource can be less than or greater than the absolute frequency corresponding to the ending point of the first frequency resource.

[0188] It should be understood that the index corresponding to an FDMed RO can be interpreted as the order in which the FDMed ROs within a time-domain RACHoccasion included in the RACH resource configuration are arranged in ascending (or descending) order of frequency position. For example, in the above figure, RO#0 to RO#3 correspond to the FDMed ROs arranged in ascending order of frequency position.

[0189] In another possible implementation, the second device may determine the first frequency resource based on the uplink system carrier bandwidth notified by the first device.

[0190] Specifically, the second device can determine the start or end point of the first frequency resource by the uplink system carrier bandwidth and the quantity of the first frequency resource notified by the first device, and then determine the channel transmission bandwidth of the second device as the size of the first frequency resource.

[0191] Specifically, the second device can determine the starting point and size of the first frequency resource by the uplink system carrier bandwidth and the number of first frequency resources, or determine the ending point and size of the first frequency resource.

[0192] By identifying at least two first frequency resources, the second device can determine the target frequency resource based on the information from the at least two first frequency resources.

[0193] In one possible implementation, the association between the target frequency resource and the SSB can be reflected by the association between the number P of SSBs actually transmitted by the first device and the target frequency resource in the first frequency resource.

[0194] Specifically, the first device can indicate the actual number P of SSBs transmitted via indication information. Different SSBs correspond to different first frequency resources. The second device determines a target frequency resource from the first frequency resources based on the selected SSBs and the association between the SSBs and the first frequency resources. The first device can indicate this via broadcast information or RRC proprietary signaling; this application does not limit the specific method used.

[0195] For example, the first device can indicate the actual number of SSBs P sent to the second device by sending an indication message, wherein the indication message can be broadcast information. The specific implementation of P indicated by broadcast information can be referred to the previous description, and will not be repeated here for the sake of brevity; or, the first device can also indicate P through RRC dedicated signaling. For example, the first device can indicate P through RRC dedicated signaling when the RedCap UE falls back to the RRC inactive state.

[0196] Specifically, Figure 11 This is a schematic diagram illustrating the determination of target frequency resources applicable to this application. The different SSBs determined by the second device during the initial access process are associated with the first frequency resources. Preferably, one SSB corresponds to one first frequency resource, or multiple SSBs may correspond to the same first frequency resource, but each first frequency resource in the frequency resource set has a corresponding SSB. The association between different SSBs and N first frequency resources can be as follows: Figure 11 As shown, other methods can also be used, and no specific limitations are made here. The number of SSBs corresponding to each first frequency resource in the frequency resource set can be determined based on P / N. When P is not divisible by N, one implementation is that N-1 first frequency resources can correspond to ceiling(P / N) or floor(P / N) SSBs, and 1 first frequency resource can correspond to N-(N-1)*ceiling(P / N) or N-(N-1)*floor(P / N) SSBs. After determining the number of SSBs corresponding to each first frequency resource in the frequency resource set, the actual SSBs transmitted by the first device can be ordered from smallest to largest SSB index to determine the actual transmitted SSBs corresponding to each first frequency resource in the frequency resource set. As shown in the figure, P=5, N=2, then the number of SSBs corresponding to one first frequency resource in the frequency resource set can be 3, and the number of SSBs corresponding to another first frequency resource can be 2. Combining the SSB index, the first 3 SSBs can be mapped to one first frequency resource in the frequency resource set with a lower frequency resource position, and the remaining 2 SSBs can be mapped to one first frequency resource in the frequency resource set with a higher frequency resource position.

[0197] Specifically, Figure 12 This is another schematic diagram illustrating a method for determining a first frequency resource applicable to embodiments of this application. As shown in the figure, the association between different SSBs and N first frequency resources can be determined based on the relationship between the index value corresponding to the actually transmitted SSB and the number N of first frequency resources. Taking a frequency band of not less than 3GHz and not greater than 6GHz on FR1 as an example, within this frequency band, the first device can transmit a maximum of 8 SSBs, with corresponding SSB indices ranging from 0 to 7. The figure shows an example where 5 SSBs were actually transmitted, with actual SSB indices of 0 / 1 / 2 / 5 / 7. One implementation of the relationship between the SSB index value (index) and N is to determine one first frequency resource in the set of frequency resources corresponding to different SSBs by using the result of index mod N, where mod represents the remainder operation. Based on this, in Figure 12 In this implementation, an SSB with a remainder of 0 corresponds to one first frequency resource, and an SSB with a remainder of 1 corresponds to another first frequency resource. In this implementation, the SSB index value can also be represented in other ways, such as sorting and numbering the actually transmitted SSBs within the actual transmitted SSB set. Figure 12 For example, in addition to using SSB index 0 / 1 / 2 / 5 / 7 to represent the SSB index, it can also be represented by SSB index '0~4', where SSB index 0 / 1 / 2 / 5 / 7 can correspond to SSB index '0 / 1 / 2 / 3 / 4' respectively. In this case, the result of SSB index 'mod N' can be used to determine one first frequency resource in the frequency resource set corresponding to different SSBs.

[0198] After determining the different frequency resources in the first frequency resources corresponding to different SSBs, the second device can determine a first frequency resource based on the selected SSB and one first frequency resource in the set of frequency resources corresponding to that SSB.

[0199] For example, during the initial access phase, the second device can select a suitable SSB based on the received SSB. Once the SSB is selected, the first frequency resource corresponding to the SSB, i.e. the target frequency resource, can be determined. Then, the target frequency resource can be used to complete random access uplink data transmission or other data transmission.

[0200] Specifically, the association between the first frequency resource and the SSB can be represented by the association between the maximum number of SSBs L that the first device can transmit and the first frequency resource. There is an association between the maximum number of SSBs L that the first device can transmit and the first frequency resource; different SSBs can correspond to different first frequency resources. The second device determines one frequency resource for transmitting random access uplink data of the second type of terminal device based on the selected SSB and the association between that SSB and the first frequency resource. The maximum number of SSBs L that the first device can transmit is predefined: for frequency bands with a center frequency of sub-3GHz, L = 4; for frequency bands with a center frequency no greater than 6GHz, L = 8; and for frequency bands with a center frequency greater than 6GHz, L = 64. In a specific implementation, the actual number of SSBs P transmitted in the above implementation can be replaced with the maximum number of SSBs L that can be transmitted; other operations remain unchanged and will not be elaborated further.

[0201] In another possible implementation, the first device can directly indicate the association between the first frequency resource and the SSB. This association determines that when the second device selects an SSB, random access uplink data or other uplink data can be transmitted through the first frequency resource associated with that SSB. The first device can directly configure the SSB information associated with the first frequency resource through the following fields when configuring the data transmission frequency resource. Here, UL initial BWP is a specific example of the first frequency resource, and the first device notifying this association through SIB1 is also a specific example. The first device can also notify in other ways, such as through other broadcast information or RRC proprietary information; the structure of the notification is not specifically limited.

[0202]

[0203] The second device can determine the target frequency resource based on the association relationship indicated by the first device and the selected SSB.

[0204] The advantage of the second device determining the target resource in the first frequency resource based on the association between the first frequency resource and the SSB is that it is simple to implement. Since the SSB can represent different beam directions in the NR system, and the geographical distribution of the second device in the system determines that the SSB beam direction selected by the second device in different geographical locations is different, it can naturally achieve traffic splitting on the first frequency resource of different second devices, realize service load balancing, and ensure data transmission efficiency on each first frequency resource.

[0205] In another possible implementation, the second device determines a first frequency resource as the target frequency resource based on the association between the first frequency resource and the RACH resource.

[0206] Specifically, Figure 13 This is a schematic diagram illustrating the determination of target frequency resources applicable to this application. RACH resources within a specific time interval are arranged in the order of FDMed RO, Time Division Multiplexing (TDM) RACH timing TDMed RO within a RACH slot, and RACH slots within the specific time interval. The arranged RACH resources are numbered, and then the first frequency resources corresponding to different RACH resources are determined according to the order mapping or by taking the remainder of the number of first frequency resources N (refer to (1) in the above-mentioned relationship between the first frequency resources and SSBs). As shown in the figure, assuming the specific time interval is a RACH resource configuration period, within one RACH configuration period, there are 2 RACH slots, each slot includes 1 TDMed RO, and each TDMed RO corresponds to 4 FDMed ROs in its corresponding time resource. Then, within one RACH configuration period, the numbers corresponding to different RACH resources are indicated in the figure.

[0207] It should be noted that the specific time interval can be the RACH configuration period, or it can be the association pattern period, which includes the relationship between SSB and RACH resources.

[0208] In one possible implementation, the second device may also determine the frequency resources for transmitting random access uplink data of the second type of terminal device corresponding to different RACH resources in the following order.

[0209] For example, firstly, if the number of FDMed RO resources is greater than or equal to the number N of the first frequency resources, the second device can directly determine the target frequency resource in the first frequency resources corresponding to different RACH resources based on the FDMed RO; otherwise, if the number of TDMed RO resources in a RACH slot is greater than or equal to the number N of the first frequency resources, the second device can determine the target frequency resource in the first frequency resources corresponding to different RACH resources based on the TDMed RO; otherwise, the target frequency resource in the first frequency resources corresponding to different RACH resources can be determined based on the RACH slot in the RACH configuration period or the associated diagram period.

[0210] It should be understood that an FDMed RO may include multiple preamble sequences. However, preferably, when determining the first frequency resource corresponding to the RACH resource, different preambles within the same FDMed RO can correspond to the same first frequency resource. That is, when determining the number of RACH resources, preambles within the same FDMed RO do not need to be included in the statistics. The advantage of this approach is its simplicity. Considering the system carrier bandwidth, even if a first frequency resource dedicated to a second device is configured, its quantity may be small. In this case, when determining the relationship between the RACH resource and the first frequency resource, it is unnecessary to further subdivide the multiple preambles included within the FDMed RO.

[0211] In another possible implementation, when configuring the first frequency resource, the first device may simultaneously indicate the RACH resource corresponding to the first frequency resource, or it may indicate the RACH resource index corresponding to different first frequency resources. For example, the first device may directly indicate the association between the first frequency resource and the RACH resource or the RACH resource index, wherein the RACH resource index can be determined according to the above method. This association is used to determine that when the second device selects the preamble required for random access, random access uplink data or other uplink data can be sent through the first frequency resource associated with the preamble sequence.

[0212] It should be noted that in the NR system, there is a preset association between the SSB sent by the first device and the RACH resources. In this way, the first device can determine the optimal downlink beam direction for downlink data transmission in the non-connected state by using the RACH resources used by the second device during random access, thus ensuring data transmission efficiency. The RACH resources used by the second device during random access are the RACH resources determined by the second device. Therefore, in this embodiment of the application, since different first frequency resources all include RACH resources for the second device to transmit during random access, the association between SSB and RACH resources can be determined in the following two ways: one is to define the association between the SSB actually transmitted (or the maximum transmitted) by the first device and the corresponding RACH resource on each first frequency resource, that is, the RACH resource on each first frequency resource can correspond to all SSBs transmitted by the first device; the other is to take all RACH resources corresponding to all first frequency resources included in the frequency resource set as a whole, and define the association between the SSB actually transmitted (or the maximum transmitted) by the first device and the whole RACH resource. In this case, the RACH resource of each first frequency resource may correspond to a part of the SSBs actually transmitted by the first device, or a part of the SSBs maximum transmitted by the first device.

[0213] For example, the first device may indicate the target frequency resource to the second device by means of indication information.

[0214] Specifically, the first device can determine the target frequency resource and instruct the second device to access the target frequency resource via broadcast information notification or RRC dedicated signaling. The second device can directly determine the target frequency resource through the instruction of the instruction information. For details on the form of broadcast message notification and RRC dedicated signaling, please refer to S602. For the sake of brevity, it will not be elaborated here.

[0215] S604 The second device transmits random access uplink data to the first device.

[0216] For example, after the second device determines the target frequency resource, it transmits random access uplink data, such as PUSCH transmissions included in Msg 3 or Msg A, or PUCCH transmissions including HARQ-ACK for Msg 4 or Msg B. The first device receives random access uplink data from the second device on the target frequency resource.

[0217] It should be understood that this embodiment takes one of the terminal devices in the first type of terminal devices, namely, the second device, as an example. However, the frequency resource set can be a frequency resource set applicable to the first type of terminal devices.

[0218] Based on the above embodiments, the advantage of determining a first frequency resource through a set of frequency resources is that SSB and RACH resources are information that the second device can obtain before entering the RRC connection state. Therefore, before the second device establishes an RRC connection with the first device, it can determine the frequency resource range of the first frequency resource, thereby realizing frequency hopping transmission of the PUSCH and PUCCH transmission channels and ensuring data transmission performance before the RRC connection state.

[0219] In this embodiment, the frequency resource consists of N consecutive / non-consecutive PRBs / RBs, where N is a positive integer. For example, the frequency domain resource consists of N consecutive PRBs / RBs, and the frequency resource here includes the target frequency resource, the first frequency resource, and the second frequency resource in this embodiment. For instance, the frequency resource can be a BWP.

[0220] In this embodiment, the first type of terminal device determines the target frequency resource from at least two first frequency resources through configuration by a network device (as one implementation of the first device in this embodiment), or it can be understood as being enabled by the network. If the network device is not configured with this function, the first type of terminal device may have only one frequency resource for transmitting random access uplink data, or it can be understood that the first frequency resource is the target frequency resource.

[0221] It should be noted that the target frequency resources and the first frequency resources in the embodiments of this application can be used not only to transmit uplink data of the first type of terminal device in the RRC idle state, but also to transmit uplink data of the first type of terminal device in the RRC connected state or inactive state.

[0222] The various embodiments described herein can be independent solutions or combinations thereof based on their inherent logic, and all such solutions fall within the protection scope of this application.

[0223] It is understood that, in the above-described method embodiments, the methods and operations implemented by the terminal device can also be implemented by components (such as chips or circuits) that can be used in the terminal device, and the methods and operations implemented by the network device can also be implemented by components (such as chips or circuits) that can be used in the network device.

[0224] The above, combined with Figures 6 to 13 The methods provided in the embodiments of this application are described in detail below. Figures 14 to 17 This application provides a detailed description of the communication device provided in its embodiments. It should be understood that the descriptions of the device embodiments correspond to the descriptions of the method embodiments; therefore, any content not described in detail here will be referred to the method embodiments above, and for the sake of brevity, will not be repeated here.

[0225] The above mainly describes the solution provided by the embodiments of this application from the perspective of interaction between various network elements. It is understood that each network element, such as a transmitting or receiving device, includes corresponding hardware structures and / or software modules to perform the above functions. Those skilled in the art should recognize that, based on the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0226] This application embodiment can divide the transmitting or receiving device into functional modules according to the above method examples. For example, each function can be divided into its own functional modules, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. It should be noted that the module division in this application embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the division of functional modules according to each function as an example.

[0227] Figure 14 This is a schematic block diagram of a communication device provided in an embodiment of this application. The communication device 1400 includes a transceiver unit 1410 and a processing unit 1420. The transceiver unit 1410 can implement corresponding communication functions, and the processing unit 1410 is used for data processing. The transceiver unit 1410 can also be referred to as a communication interface or a communication unit.

[0228] In one possible implementation, the communication device 1400 may further include a storage unit for storing instructions and / or data, and the processing unit 1420 may read the instructions and / or data from the storage unit to enable the communication device to implement the aforementioned method embodiments.

[0229] The communication device 1400 can be used to perform the actions performed by the terminal device in the above method embodiment. In this case, the communication device 1400 can be the terminal device or a component that can be configured on the terminal device. The transceiver unit 1410 is used to perform the transceiver-related operations on the terminal device side in the above method embodiment, and the processing unit 1420 is used to perform the processing-related operations on the terminal device side in the above method embodiment.

[0230] Alternatively, the communication device 1400 can be used to perform the actions performed by the network device in the above method embodiment. In this case, the communication device 1400 can be a network device or a component configurable on the network device. The transceiver unit 1410 is used to perform the transceiver-related operations on the network device side in the above method embodiment, and the processing unit 1420 is used to perform the processing-related operations on the network device side in the above method embodiment.

[0231] As a design feature, the communication device 1400 is used to perform the above... Figure 6 In the embodiment shown, the actions performed by the terminal device are as follows: transceiver unit 1410 is used for S602 and S604; and processing unit 1420 is used for S603.

[0232] The communication device 1400 can implement the steps or processes executed by a terminal device corresponding to the method 600 according to the embodiments of this application. The communication device 1400 may include methods for performing... Figure 6 The terminal device in method 600 executes the unit of the method. Furthermore, each unit in the communication device 1400 and the aforementioned other operations and / or functions are respectively for implementing... Figure 6 The corresponding process of method 600 in the middle.

[0233] It should be understood that the specific process of each unit performing the above-mentioned corresponding steps has been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0234] As an alternative design, the communication device 1400 is used to perform the above. Figure 6 In the illustrated embodiment, the actions performed by the network device are as follows: transceiver unit 1410 is used for S602 and S604; and processing unit 1420 is used for S601.

[0235] The communication device 1400 can implement steps or processes corresponding to those executed by a network device in the method 600 according to an embodiment of this application. The communication device 1400 may include functions for performing... Figure 6 The network device in method 600 is a unit that executes the method. Furthermore, each unit in the communication device 1400 and the other operations and / or functions described above are respectively for implementing... Figure 6 The corresponding process of method 600 in the middle.

[0236] Wherein, when the communication device 1400 is used to perform Figure 6 When method 600 is executed, the transceiver unit 1410 can be used to execute steps S602 and S604 in method 600.

[0237] The processing unit 1420 in the above embodiments can be implemented by at least one processor or processor-related circuitry. The transceiver unit 1410 can be implemented by a transceiver or transceiver-related circuitry. The transceiver unit 1410 can also be referred to as a communication unit or communication interface. The storage unit can be implemented by at least one memory.

[0238] like Figure 15 As shown in the illustration, this application also provides a communication device 1500. The communication device 1500 includes a processor 1510 coupled to a memory 1520. The memory 1520 stores computer programs or instructions and / or data. The processor 1510 executes the computer programs or instructions and / or data stored in the memory 1520, causing the methods described in the above method embodiments to be executed. The memory 1520 is optional.

[0239] In one possible implementation, the communication device 1500 includes one or more processors 1510.

[0240] In one possible implementation, such as Figure 15 As shown, the communication device 1500 may also include a memory 1520.

[0241] In one possible implementation, the communication device 1500 may include one or more memories 1520.

[0242] In one possible implementation, the memory 1520 can be integrated with the processor 1510, or it can be set up separately.

[0243] In one possible implementation, such as Figure 15 As shown, the communication device 1500 may further include a transceiver 1530, which is used for receiving and / or transmitting signals. For example, a processor 1510 is used to control the transceiver 1530 to receive and / or transmit signals.

[0244] As one option, the communication device 1500 is used to implement the operations performed by the terminal device in the above method embodiments.

[0245] For example, processor 1510 is used to implement the processing-related operations performed by the terminal device in the above method embodiments, and transceiver 1530 is used to implement the sending and receiving-related operations performed by the terminal device in the above method embodiments.

[0246] As an alternative, the communication device 1500 is used to implement the operations performed by the network device in the above method embodiments.

[0247] For example, processor 1510 is used to implement the processing-related operations performed by the network device in the above method embodiments, and transceiver 1530 is used to implement the sending and receiving-related operations performed by the network device in the above method embodiments.

[0248] This application also provides a communication device 1600, which can be a terminal device or a chip. The communication device 1600 can be used to perform the operations performed by the terminal device in the above method embodiments.

[0249] When the communication device 1600 is a terminal device Figure 16 A simplified structural diagram of a terminal device is shown. (For example...) Figure 16 As shown, the terminal device includes a processor, memory, radio frequency (RF) circuitry, antenna, and input / output devices. The processor is primarily used for processing communication protocols and data, controlling the terminal device, executing software programs, and processing software program data. The memory is mainly used to store software programs and data. The RF circuitry is mainly used for converting baseband signals to RF signals and processing RF signals. The antenna is mainly used for transmitting and receiving RF signals in the form of electromagnetic waves. Input / output devices, such as touchscreens, displays, and keyboards, are mainly used to receive user input data and output data to the user. It should be noted that some types of terminal devices may not have input / output devices.

[0250] When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency (RF) circuit. The RF circuit then processes the baseband signal and transmits it outward as electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts it into a baseband signal, and outputs the baseband signal to the processor. The processor then converts the baseband signal back into data and processes it. For ease of explanation, Figure 16 Only one memory and processor are shown in the illustration. In actual terminal device products, there may be one or more processors and one or more memories. Memory can also be called storage medium or storage device, etc. Memory can be set up independently of the processor or integrated with the processor; this application does not limit this.

[0251] In the embodiments of this application, the antenna and radio frequency circuit with transceiver function can be regarded as the transceiver unit of the terminal device, and the processor with processing function can be regarded as the processing unit of the terminal device.

[0252] like Figure 16As shown, the terminal device includes a transceiver unit 1610 and a processing unit 1620. The transceiver unit 1610 can also be referred to as a transceiver, transceiver machine, transceiver device, etc. The processing unit 1620 can also be referred to as a processor, processing board, processing module, processing device, etc.

[0253] In one possible implementation, the devices in transceiver unit 1610 used for receiving functions can be considered as receiving units, and the devices in transceiver unit 1610 used for transmitting functions can be considered as transmitting units. That is, transceiver unit 1610 includes both receiving and transmitting units. A transceiver unit may also be called a transceiver, transceiver circuit, etc. A receiving unit may also be called a receiver, receiver, or receiving circuit, etc. A transmitting unit may also be called a transmitter, transmitter, or transmitting circuit, etc.

[0254] For example, in one implementation, the processing unit 1620 is used to perform... Figure 6 Processing actions on the terminal device side. For example, processing unit 1620 is used to execute... Figure 6 The processing step in step S603; the transceiver unit 1610 is used to execute Figure 6 The send and receive operations in steps S602 and S604.

[0255] It should be understood that Figure 16 This is merely an example and not a limitation; the terminal device described above, which includes a transceiver unit and a processing unit, may not rely on... Figure 16 The structure shown.

[0256] When the communication device 1600 is a chip, the chip includes a transceiver unit and a processing unit. The transceiver unit can be an input / output circuit or a communication interface; the processing unit can be a processor, microprocessor, or integrated circuit integrated on the chip.

[0257] This application also provides a communication device 1700, which can be a network device or a chip. The communication device 1700 can be used to perform the operations performed by the network device in the above method embodiments.

[0258] When the communication device 1700 is a network device, such as a base station. Figure 17 A simplified schematic diagram of a base station structure is shown. The base station includes part 1710 and part 1720. Part 1710 is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals to baseband signals; part 1720 is mainly used for baseband processing and controlling the base station. Part 1710 is often referred to as a transceiver unit, transceiver, transceiver circuit, or transceiver. Part 1720 is usually the control center of the base station, often referred to as a processing unit, used to control the base station to perform the processing operations on the network device side in the above method embodiments.

[0259] The transceiver unit of section 1710, also known as a transceiver or transceiver unit, includes an antenna and radio frequency (RF) circuitry, where the RF circuitry is primarily used for RF processing. Optionally, the devices in section 1710 that implement the receiving function can be considered as receiving units, and the devices that implement the transmitting function can be considered as transmitting units; that is, section 1710 includes both receiving and transmitting units. The receiving unit can also be called a receiver, receiver circuit, or receiving unit, while the transmitting unit can be called a transmitter, transmitter, or transmitting circuit.

[0260] Section 1720 may include one or more single boards, each single board may include one or more processors and one or more memories. The processor is used to read and execute programs in the memory to implement baseband processing functions and control the base station. If multiple single boards exist, they can be interconnected to enhance processing capabilities. As an alternative implementation, multiple single boards may share one or more processors, multiple single boards may share one or more memories, or multiple single boards may simultaneously share one or more processors.

[0261] For example, in one implementation, the transceiver unit of section 1710 is used to perform... Figure 6 The transmit / receive related steps performed by the network device in the illustrated embodiment; part 1720 is used for execution Figure 6 The steps related to processing performed by the network device in the illustrated embodiment.

[0262] It should be understood that Figure 17 This is merely an example and not a limitation; the network devices described above, including transceiver units and processing units, may not rely on... Figure 17 The structure shown.

[0263] When the communication device 1700 is a chip, the chip includes a transceiver unit and a processing unit. The transceiver unit can be an input / output circuit or a communication interface; the processing unit is a processor, microprocessor, or integrated circuit integrated on the chip.

[0264] This application also provides a computer-readable storage medium storing computer instructions for implementing the methods executed by a terminal device or a network device in the above-described method embodiments.

[0265] For example, when the computer program is executed by a computer, it enables the computer to implement the method executed by the terminal device or the method executed by the network device in the above method embodiments.

[0266] This application also provides a computer program product containing instructions that, when executed by a computer, cause the computer to implement the method executed by the terminal device or the method executed by the network device in the above method embodiments.

[0267] This application also provides a communication system, which includes the network device and terminal device described in the above embodiments.

[0268] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the explanations and beneficial effects of the relevant content in any of the communication devices provided above can be referred to the corresponding method embodiments provided above, and will not be repeated here.

[0269] In this embodiment, the terminal device or network device may include a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on the operating system layer. The hardware layer may include hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory). The operating system layer may be any one or more computer operating systems that implement business processing through processes, such as Linux, Unix, Android, iOS, or Windows. The application layer may include applications such as browsers, address books, word processing software, and instant messaging software.

[0270] This application does not impose any particular limitation on the specific structure of the execution subject of the method provided in this application embodiment. As long as it is possible to communicate according to the method provided in this application embodiment by running a program that records the code of the method provided in this application embodiment. For example, the execution subject of the method provided in this application embodiment can be a terminal device or a network device, or a functional module in a terminal device or network device that can call and execute a program.

[0271] Various aspects or features of this application may be implemented as methods, apparatus, or articles of manufacture using standard programming and / or engineering techniques. The term "article of manufacture" as used herein may encompass a computer program accessible from any computer-readable device, carrier, or medium.

[0272] The computer-readable storage medium can be any available medium that a computer can access, or a data storage device such as a server or data center that integrates one or more available media. Available media (or computer-readable media) can include, but are not limited to: magnetic media or magnetic storage devices (e.g., floppy disks, hard disks (such as portable hard drives), magnetic tapes), optical media (e.g., optical discs, compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards and flash memory devices (e.g., erasable programmable read-only memory (EPROM), cards, sticks, or key drives, etc.), or semiconductor media (e.g., solid-state disks (SSDs), USB flash drives, read-only memory (ROM), random access memory (RAM), and various other media capable of storing program code).

[0273] The various storage media described herein may represent one or more devices and / or other machine-readable media used for storing information. The term "machine-readable media" may include, but is not limited to, wireless channels and various other media capable of storing, containing and / or carrying instructions and / or data.

[0274] It should be understood that the processor mentioned in the embodiments of this application can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0275] It should also be understood that the memory mentioned in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM). For example, RAM can be used as an external cache. By way of example and not limitation, RAM can include a variety of forms, such as: static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0276] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) can be integrated into the processor.

[0277] It should also be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0278] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the apparatus or units may be electrical, mechanical, or other forms.

[0279] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to implement the solution provided in this application, depending on actual needs.

[0280] In addition, the functional units in the various embodiments of this application can be integrated into one unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0281] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof.

[0282] When implemented using software, it can be implemented entirely or partially as a computer program product. This computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. For example, the computer can be a personal computer, a server, or a network device, etc. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. For information on computer-readable storage media, please refer to the description above.

[0283] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims and the specification.

Claims

1. A method for wireless access, characterized in that, The method is applicable to a first type of terminal device, including: Determine a target frequency resource, wherein the target frequency resource is one of at least two first frequency resources, each of the at least two first frequency resources is used to transmit random access uplink data of the first type of terminal device, and each first frequency resource is the uplink initial bandwidth portion (BWP) corresponding to the first type of terminal device. Transmit random access uplink data on the target frequency resource; Each of the first frequency resources is determined based on the quantity of the first frequency resources and the second frequency resources. The second frequency resources are used to transmit random access uplink data of the second type of terminal devices. The second type of terminal devices have different bandwidth capabilities than the first type of terminal devices. The second frequency resources include the at least two first frequency resources.

2. The method according to claim 1, characterized in that, The target frequency resources are determined based on at least one of the following: Random access preamble resources used during the random access process; The number of random access preamble resources used for the first type of terminal devices; The quantity of at least two of the first frequency resources.

3. The method according to claim 1, characterized in that, The target frequency resource is determined based on the correspondence between the random access preamble resource of the first type of terminal device and the first frequency resource, as well as the random access preamble resource used in the random access process. The correspondence between the random access preamble resource of the first type of terminal device and the first frequency resource is configured by the network device.

4. The method according to claim 1, characterized in that, The target frequency resource is determined based on the synchronization signal block and the correspondence between the synchronization signal block and the first frequency resource, and the correspondence between the synchronization signal block and the first frequency resource is configured by the network device.

5. The method according to claim 1, characterized in that, The target frequency resources are determined based on at least one of the following: Synchronization signal blocks determined during the initial access process; The number of synchronization signal blocks from network devices; The number of at least two first frequency resources.

6. The method according to claim 1, characterized in that, Each of the first frequency resources is determined based on the quantity of the first frequency resources and the frequency resources corresponding to the random access preamble resources for the second type of terminal devices, wherein the frequency resources corresponding to the random access preamble resources for the second type of terminal devices belong to the second frequency resources.

7. The method according to any one of claims 1 to 6, characterized in that, The quantity of the first frequency resources is determined based on at least one of the following: The bandwidth of the system carrier; The frequency band in which the system carrier is located; Frequency resources used for transmitting random access uplink data of a second type of terminal device, the second type of terminal device having different bandwidth capabilities than the first type of terminal device; The transmission bandwidth used for downlink system information of the second type of terminal equipment.

8. The method according to any one of claims 1 to 5, characterized in that, The target frequency resources are determined based on indication information from network devices.

9. A method for wireless access, characterized in that, The method is applicable to network devices, including: Determine a target frequency resource, wherein the target frequency resource is one of at least two first frequency resources, each of the at least two first frequency resources is used to transmit random access uplink data of a first type of terminal device, and each first frequency resource is the uplink initial bandwidth portion (BWP) corresponding to the first type of terminal device; On the target frequency resources, receive random access uplink data from the first type of terminal equipment; Each of the first frequency resources is determined based on the quantity of the first frequency resources and the second frequency resources. The second frequency resources are used to transmit random access uplink data of the second type of terminal devices. The second type of terminal devices have different bandwidth capabilities than the first type of terminal devices. The second frequency resources include the at least two first frequency resources.

10. The method according to claim 9, characterized in that, The target frequency resources are determined based on at least one of the following: Random access preamble resources used during the random access process; The number of random access preamble resources used for the first type of terminal devices; The number of the first frequency resources.

11. The method according to claim 9, characterized in that, The target frequency resource is determined based on the correspondence between the random access preamble resource of the first type of terminal device and the first frequency resource, as well as the random access preamble resource used in the random access process. The correspondence between the random access preamble resource of the first type of terminal device and the first frequency resource comes from the network device.

12. The method according to claim 9, characterized in that, The target frequency resource is determined based on the synchronization signal block and the correspondence between the synchronization signal block and the first frequency resource, and the correspondence between the synchronization signal block and the first frequency resource comes from the network device.

13. The method according to claim 9, characterized in that, The target frequency resources are determined based on at least one of the following: Synchronization signal blocks determined during the initial access process; The number of synchronization signal blocks from the network device; The number of the first frequency resources.

14. The method according to claim 9, characterized in that, The location of each of the first frequency resources is determined based on the quantity of the first frequency resources and the frequency resources corresponding to the random access preamble resources for the second type of terminal devices, wherein the frequency resources corresponding to the random access preamble resources for the second type of terminal devices belong to the second frequency resources.

15. The method according to any one of claims 9 to 14, characterized in that, The quantity of the first frequency resources is determined based on at least one of the following: The bandwidth of the system carrier; The frequency band in which the system carrier is located; Frequency resources used for transmitting random access uplink data of a second type of terminal device, the second type of terminal device having different bandwidth capabilities than the first type of terminal device; The transmission bandwidth used for downlink system information of the second type of terminal device.

16. The method according to any one of claims 9 to 15, characterized in that, The target frequency resources are determined based on indication information from the network device.

17. An apparatus for data transmission, characterized in that, include: Memory, used to store computer instructions; A processor for executing computer instructions stored in the memory, causing the means for data transmission to perform the method as claimed in any one of claims 1 to 8 or the method as claimed in any one of claims 9 to 16.

18. A computer-readable storage medium, characterized in that, It stores a computer program that, when executed by a data transmission device, causes the data transmission device to perform the method as described in any one of claims 1 to 8 or the method as described in any one of claims 9 to 16.

Images