CN114071427A

CN114071427A - Wireless access method and device

Info

Publication number: CN114071427A
Application number: CN202010791128.XA
Authority: CN
Inventors: 郑娟; 李超君; 侯海龙; 费永强
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2022-02-18
Also published as: WO2022028359A1

Abstract

The embodiment of the present application provides a method for wireless access, where the method is applicable to a first type of terminal device, and the method may include: determining a target frequency resource, wherein the target frequency resource is one of at least two first frequency resources, and the first frequency resources are used for transmitting random access uplink data of the first type terminal equipment; and transmitting random access uplink data on the target frequency resource. In the 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 the terminal device can be ensured to transmit the random access data, and the problem of heavy service load caused by low bandwidth capability of the first type terminal device is avoided.

Description

Wireless access method and device

Technical Field

The present application relates to the field of communications, and, more particularly, to methods and apparatus for wireless access.

Background

In the communication process, as the requirement of the service under the application scene corresponding to the machine type terminal equipment on the data transmission rate is not high, the implementation specification can be reduced, and the implementation cost is further reduced; on the other hand, the reduction of the implementation cost of the machine terminal equipment is also helpful for expanding the market of the machine terminal equipment and promoting the development of the internet of things market.

However, in some scenarios, such as a New Radio (NR) system, in an initial access phase, there is no interaction between a base station and a corresponding cell, so that the base station cannot acquire the type of a terminal device, such as a machine type terminal device, and cannot determine the bandwidth capability of the terminal device; meanwhile, since the base station cannot identify each machine terminal device, it is impossible to configure a data transmission frequency Resource for each machine terminal device separately through a dedicated signaling of the terminal device, and thus the machine terminal devices that aim to establish Radio Resource Control (RRC) connection with the network device in a non-connected state are concentrated in the same frequency range, which may cause an excessive load on the data transmission frequency Resource in the non-connected state, and in particular, when a large number of connections of the machine terminal devices are considered, the load on the data transmission frequency Resource may be further increased.

Disclosure of Invention

The embodiment of the application provides a wireless access method and a wireless access device, which can realize the shunting of service load and ensure the performance of non-connection state data transmission in a scene of large connection of a first type of terminal equipment.

In a first aspect, a method for wireless access is provided, where the method is applied to a first type terminal device, and the method includes: determining a target frequency resource, wherein the target frequency resource is one of at least two first frequency resources, and the first frequency resources are used for transmitting random access uplink data of the first type terminal equipment; and transmitting random access uplink data on the target frequency resource.

It should be understood that the first frequency resource may not only be a set of resources that guarantee random access data transmission, but may also be used for other data transmissions.

It should be understood that the method for wireless access provided by the first aspect may be performed by a target terminal device, or may also be performed by a communication apparatus or chip in the target terminal device, and the present application is not limited herein.

Based on the technical scheme, one of the at least two first frequency resources is determined as a target resource, and the target resource is used for transmitting the random access uplink data of the first type terminal equipment, so that the problem of heavy service load caused by low bandwidth capacity of the first type terminal equipment can be avoided, and meanwhile, the terminal equipment can be ensured to transmit the random access uplink data.

With reference to the first aspect, in certain implementations of the first aspect, the target frequency resource is determined according to at least one of: random access preamble resources used by target terminal equipment in a random access process, wherein the target terminal equipment belongs to first type terminal equipment; a number of random access preamble resources for the first type of terminal device; the number of the first frequency resources.

With reference to the first aspect, in certain implementations of the first aspect, the target frequency resource is determined according to a correspondence between a 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, where the correspondence between the random access preamble resource of the first type terminal device and the first frequency resource is from a network device.

Based on the above technical solution, the target terminal device may determine the first frequency resource according to the random access preamble resource determined to be used in the initial access process and the association relationship between the random access preamble resource and the first frequency resource. The benefit of determining the first frequency resource based on the random access preamble resource is that in some cases the introduction of unnecessary data transmission delays can be avoided.

With reference to the first aspect, in certain implementations of the first aspect, the target frequency resource is determined according to a synchronization signal block and a correspondence of the synchronization signal block to the first frequency resource, the correspondence of the synchronization signal block to the first frequency resource being from the network device.

Based on the above technical solution, the target terminal device determines the target frequency resource according to the association relationship between the first frequency resource and the synchronization signal block, which is advantageous in that the implementation is simple, and since the synchronization signal block can represent different beam directions in the NR system, and the geographical distribution of the target terminal device in the NR system determines that the beam directions of the synchronization signal blocks selected by the target terminal devices in different geographical locations are different, the data transmission frequency resources of different terminal devices can be naturally distributed, the service load balance is achieved, and the data transmission efficiency on each data transmission frequency resource is ensured. The network device may notify the first type terminal device of the corresponding relationship in a broadcast information notification manner or an RRC dedicated signaling manner, which is not limited in this application.

With reference to the first aspect, in certain implementations of the first aspect, the target frequency resource is determined according to at least one of: a synchronization signal block determined in an initial access procedure; a number of synchronization signal blocks from the network device; the number of the first frequency resources.

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

With reference to the first aspect, in certain implementations of the first aspect, the size of each first frequency resource is determined according to the number of the first frequency resources and a second frequency resource, where the second frequency resource is used to transmit random access uplink data of a second type of terminal device, and the bandwidth capability of the second type of terminal device is different from that of the first type of terminal device.

With reference to the first aspect, in certain implementations of the first aspect, the location of each first frequency resource is determined according to the number of the first frequency resources and a frequency resource corresponding to a random access preamble resource for the second type terminal device, where the second type terminal device has a different bandwidth capability from the first type terminal device.

The distinction between the first type of terminal device and the second type of terminal device in this application includes, but is not limited to, the difference in bandwidth capabilities, i.e., bandwidth capabilities are not an essential feature in this application.

With reference to the first aspect, in certain implementations of the first aspect, the number of the first frequency resources is determined according to at least one of: a bandwidth of a system carrier; the frequency band of the system carrier; the frequency resource used for transmitting the random access uplink data of the second type terminal equipment; and the transmission bandwidth of the downlink system information for the second type terminal equipment.

The number of the first frequency resources may be determined by any one of the above resources and/or any combination of the above resources, and the present application is not limited herein.

With reference to the first aspect, in certain implementations of the first aspect, the target frequency resource is determined according to indication information from a network device.

The indication information may be in the form of broadcast information notification or in the form of RRC dedicated signaling, which is not limited in this application.

In a second aspect, a method for wireless access is provided, where the method is applied to a network device, and the method includes: determining a target frequency resource, wherein the target frequency resource is one of at least two first frequency resources, and the first frequency resources are used for transmitting random access uplink data of the first type terminal equipment; and receiving random access uplink data from the first type terminal equipment on the target frequency resource.

It should be understood that the method for wireless access provided by the second aspect may be performed by a network device, or may also be performed by a communication apparatus or chip in the network device, and the present application is not limited thereto.

Based on the technical scheme, the target frequency resource in the at least two first frequency resources is determined, and the random access uplink data from the first type terminal equipment is received on the target frequency resource, so that the random access of the terminal equipment can be ensured, and the pressure of overweight load on the data transmission frequency resource in the non-connection state caused by the fact that the first type terminal equipment aiming at establishing RRC connection with the network equipment in the non-connection state can be concentrated in one frequency range can be effectively relieved.

With reference to the second aspect, in certain implementations of the second aspect, the target frequency resource is determined according to at least one of: random access preamble resources used by target terminal equipment in a random access process, wherein the target terminal equipment belongs to first type terminal equipment; a number of random access preamble resources for the first type of terminal device; the number of the first frequency resources.

With reference to the second aspect, in some implementations of the second 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, where the correspondence between the random access preamble resource of the first type terminal device and the first frequency resource is from a network device.

With reference to the second aspect, in certain implementations of the second aspect, the target frequency resource is determined according to a synchronization signal block and a correspondence of the synchronization signal block to the first frequency resource, the correspondence of the synchronization signal block to the first frequency resource being from the network device.

With reference to the second aspect, in certain implementations of the second aspect, the target frequency resource is determined according to at least one of: a synchronization signal block determined in an initial access procedure; a number of synchronization signal blocks from the network device; the number of the first frequency resources.

With reference to the second aspect, in certain implementations of the second aspect, the size of each first frequency resource is determined according to the number of the first frequency resources and a second frequency resource, where the second frequency resource is used for transmitting random access uplink data of a second type terminal device, and the bandwidth capability of the second type terminal device is different from that of the first type terminal device.

With reference to the second aspect, in some implementations of the second aspect, the location of each first frequency resource is determined according to the number of the first frequency resources and a frequency resource corresponding to a random access preamble resource for the second type terminal device.

With reference to the second aspect, in certain implementations of the second aspect, the amount of the first frequency resource is determined according to at least one of: a bandwidth of a system carrier; the frequency band of the system carrier; the frequency resource used for transmitting the random access uplink data of the second type terminal equipment; and the transmission bandwidth of the downlink system information for the second type terminal equipment.

With reference to the second aspect, in certain implementations of the second aspect, the target frequency resource is determined according to indication information from a network device.

In a third aspect, an apparatus for wireless access is provided, the apparatus being adapted for a first type of terminal device, and comprising:

a processing module, configured to determine a target frequency resource, where 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 terminal device; the processing module is further configured to transmit random access uplink data on the target frequency resource.

Optionally, the apparatus further comprises a transceiver module and/or a storage module.

The beneficial effects of the foregoing technical solutions may refer to the related description of the first aspect, and for brevity, are not described herein again.

With reference to the third aspect, in certain implementations of the third aspect, the target frequency resource is determined according to at least one of: random access preamble resources used in a random access procedure; a number of random access preamble resources for the first type of terminal device; a number of the first frequency resources.

With reference to the third aspect, in certain implementations of the third 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, where the correspondence between the random access preamble resource of the first type terminal device and the first frequency resource is configured by a network device.

With reference to the third aspect, in certain implementations of the third aspect, the target frequency resource is determined according to a synchronization signal block and a correspondence of the synchronization signal block to the first frequency resource, the correspondence of the synchronization signal block to the first frequency resource being configured by the network device.

With reference to the third aspect, in certain implementations of the third aspect, the target frequency resource is determined according to at least one of: a synchronization signal block determined in an initial access procedure; a number of synchronization signal blocks from the network device; a number of the first frequency resources.

With reference to the third aspect, in certain implementation manners of the third aspect, the size of each first frequency resource is determined according to the number of the first frequency resources and a second frequency resource, where the second frequency resource is used to transmit random access uplink data of a second type terminal device, and the bandwidth capability of the second type terminal device is different from that of the first type terminal device.

With reference to the third aspect, in certain implementations of the third aspect, the location of each of the first frequency resources is determined according to the number of the first frequency resources and a frequency resource corresponding to a random access preamble resource for a second type of terminal device, where the second type of terminal device has a different bandwidth capability from the first type of terminal device.

With reference to the third aspect, in certain implementations of the third aspect, the number of the first frequency resources is determined according to at least one of: a bandwidth of a system carrier; the frequency band of the system carrier; the frequency resource is used for transmitting random access uplink data of a second type terminal device, and the bandwidth capacity of the second type terminal device is different from that of the first type terminal device; and the transmission bandwidth of the downlink system information for the second type terminal equipment.

With reference to the third aspect, in certain implementations of the third aspect, the target frequency resource is determined according to indication information from a network device.

In a fourth aspect, an apparatus for wireless access is provided, the apparatus being adapted for a network device, and the apparatus comprising: the processing module is used for determining a target frequency resource, wherein the target frequency resource is one of at least two first frequency resources, and the first frequency resources are used for transmitting random access uplink data of the first type terminal equipment; the processing module is further configured to receive random access uplink data from the first type terminal device on the target frequency resource.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the target frequency resource is determined according to at least one of: random access preamble resources used in a random access procedure; a number of random access preamble resources for the first type of terminal device; a number of the first frequency resources.

With reference to the fourth aspect, in some implementations of the fourth aspect, the target frequency resource is determined according to a correspondence between a 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, where the correspondence between the random access preamble resource of the first type terminal device and the first frequency resource is from the network device.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the target frequency resource is determined according to a synchronization signal block and a correspondence of the synchronization signal block and the first frequency resource, the correspondence of the synchronization signal block and the first frequency resource being from the network device.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the target frequency resource is determined according to at least one of: a synchronization signal block determined in an initial access procedure; a number of synchronization signal blocks from the network device; a number of the first frequency resources.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the size of each first frequency resource is determined according to the number of the first frequency resources and a second frequency resource, where the second frequency resource is used to transmit random access uplink data of a second type terminal device, and bandwidth capabilities of the second type terminal device and the first type terminal device are different.

With reference to the fourth aspect, in some implementations of the fourth aspect, the location of each first frequency resource is determined according to the number of the first frequency resources and a frequency resource corresponding to a random access preamble resource for a second type terminal device, where the second type terminal device has a different bandwidth capability from the first type terminal device.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the number of the first frequency resources is determined according to at least one of: a bandwidth of a system carrier; the frequency band of the system carrier; the frequency resource is used for transmitting random access uplink data of a second type terminal device, and the bandwidth capacity of the second type terminal device is different from that of the first type terminal device; and the transmission bandwidth is used for the downlink system information of the second type terminal equipment.

With reference to the fourth aspect, in some implementations of the fourth aspect, the target frequency resource is determined according to indication information from the network device.

In a fifth aspect, an apparatus for wireless access is provided that includes a processor. The processor is coupled to the memory and is operable to execute instructions in the memory to implement the communication method of any of the above-described first or second aspects and possible implementations of the first or second aspects. Optionally, the apparatus for wireless access further comprises a memory. Optionally, the apparatus for wireless access further comprises a communication interface, the processor being coupled to the communication interface for inputting and/or outputting information. The information includes at least one of instructions and data.

In one implementation, the apparatus for wireless access is a network device. When the apparatus for wireless access is a network device, the communication interface may be a transceiver, or an input/output interface.

In another implementation, the apparatus for wireless access is a chip or a system of chips. When the apparatus for wireless access is a chip or a chip system, the communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or related circuit on the chip or the chip system. The processor may also be embodied as a processing circuit or a logic circuit.

In another implementation, the apparatus for wireless access is a chip or a system of chips configured in a network device.

Alternatively, the transceiver may be a transmit-receive circuit. Alternatively, the input/output interface may be an input/output circuit.

A sixth aspect provides a computer readable storage medium having stored thereon a computer program which, when executed by a communication apparatus, causes the communication apparatus to implement the communication method of the first aspect or the second aspect, and any possible implementation manner of the first aspect or the second aspect.

In a seventh aspect, a computer program product containing instructions is provided, and the instructions, when executed by a computer, cause a communication apparatus to implement the communication method provided in the first aspect or the second aspect.

In an eighth aspect, a communication system is provided, which implements the apparatus for wireless access provided in the third aspect or the apparatus for wireless access provided in the fourth aspect, and the apparatus for wireless access in any possible implementation manner of the third aspect or the fourth aspect.

Drawings

Fig. 1 shows a schematic diagram of a wireless communication system 100 suitable for use in embodiments of the present application.

Fig. 2 shows another schematic diagram of a wireless communication system 200 suitable for use in embodiments of the present application.

Fig. 3 shows an architecture diagram of a random access phase system data transmission.

Fig. 4 shows a schematic diagram of a resource load of a data transmission frequency resource.

Fig. 5 shows a system architecture diagram for wireless access suitable for embodiments of the present application.

Fig. 6 shows a schematic flow chart of a method for wireless access suitable for embodiments of the present application.

Fig. 7 shows a schematic diagram of determining the size of the first frequency resource, which is suitable for the embodiment of the present application.

Fig. 8 shows another diagram for determining the size of the first frequency resource, which is suitable for the embodiment of the present application.

Fig. 9 shows a schematic diagram of a method according to resource configuration of a random access preamble, which is suitable for use in an embodiment of the present application.

Fig. 10 shows a schematic diagram of determining a location of a first frequency resource, which is suitable for use in an embodiment of the present application.

Fig. 11 is a diagram illustrating a method for determining a first frequency resource according to an embodiment of the present application.

Fig. 12 is another diagram illustrating a method for determining a first frequency resource according to an embodiment of the present application.

Fig. 13 is another diagram illustrating a method for determining a first frequency resource according to an embodiment of the present application.

Fig. 14 shows a schematic block diagram of a communication device provided in an embodiment of the present application.

Fig. 15 shows a schematic architecture diagram of a communication device provided by an embodiment of the present application.

Fig. 16 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Fig. 17 shows a schematic architecture diagram of a communication device provided by an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The New Radio (NR) of the Fifth Generation (5G) Mobile Communication technology is a global 5G standard designed based on a New air interface of Orthogonal Frequency Division Multiplexing (OFDM), which is also a very important cellular Mobile technology base of the next Generation, and the services of the 5G technology are very diverse and can be oriented to Enhanced Mobile Broadband (eMBB) services, Ultra-reliable Low-Latency Communication (URLLC) services, and mass Machine Communication (mtc) services, wherein the mtc services may be Industrial Wireless Sensor Network (sn) services, Video monitoring (Video) services, and wearable services.

Machine type terminal equipment often has higher requirements on cost and power consumption. For example, machine type terminal equipment is generally realized at low cost, because the service under the application scene corresponding to the machine type terminal equipment does not have high requirement on data transmission rate, for example, the data transmission rate carried by a sensor under the IWSN is not more than 2Mbps, which is enough to satisfy the IWSN service, the data transmission rate carried by an economical video monitoring camera is generally 2-4 Mbps, the downlink peak rate of the terminal equipment under the wearable service, such as a smart watch, does not exceed 150Mbps, the uplink peak rate does not exceed 50Mbps, which is much lower than the peak rate of NR legacy terminal equipment (such as NR eMBB terminal equipment), based on which, the machine type terminal equipment can reduce the realization specification relative to the NR legacy terminal equipment, thereby reducing the realization cost; on the other hand, the reduction of the implementation cost of the machine terminal equipment is also helpful for expanding the market of the machine terminal equipment and promoting the development of the internet of things market. Currently, 3GPP initiated research (reference: RP-193238) on low-power terminal equipment (NR reduced capability, NR red cap) under NR system, aiming at designing a terminal equipment meeting performance requirements of the internet of things market and having low cost/implementation complexity for increasing the application of NR system in the internet of things market aiming at the increasing internet of things market, such as the above-mentioned IWSN, video monitoring and wearable services. For convenience of description, in the following section, NR red map UE is taken as an example for illustration.

One way to reduce the cost of the terminal device is to reduce the channel bandwidth of the terminal device, or it can also be understood as reducing the bandwidth capability of the terminal device, i.e. the bandwidth capability of the NR red map UE may be much smaller than the bandwidth capability of the NR legacy terminal device. Currently, the bandwidth capability that an NR Legacy terminal device, for example, a terminal device of release Rel-15/release Rel-16, must have is 100MHz, and the bandwidth capability of an NR reload UE may be only 20MHz from the viewpoint of being able to receive an initial access signal transmitted by an NR base station and then access the NR system, and under some configurations of the NR system, the bandwidth capability of the NR reload UE may be further reduced, for example, to 5MHz or 10MHz, and at this time, the NR reload UE may also access the NR system. A bandwidth capability of no greater than 20MHz may greatly reduce the cost of a red cap UE relative to a bandwidth capability of 100 MHz.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a fifth generation (5G) system or a New Radio (NR), a Long Term Evolution (LTE) system, a Frequency Division Duplex (FDD) system, a Time Division Duplex (TDD) system, a Universal Mobile Telecommunications System (UMTS), and the like. The technical solution of the embodiment of the present application may also be applied to device-to-device (D2D) communication and the like.

For the understanding of the embodiments of the present application, a communication system suitable for the embodiments of the present application will be described in detail with reference to fig. 1 and 2.

Fig. 1 is a diagram of a wireless communication system 100 suitable for use in embodiments of the present application. As shown, the wireless communication system 100 may include at least one network device, such as the network device 111 shown in fig. 1, and the wireless communication system 100 may further include at least one terminal device, such as the terminal devices 121 to 123 shown in fig. 1. The network equipment and the terminal equipment can be both provided with a plurality of antennas, and the network equipment and the terminal equipment can communicate by using a multi-antenna technology.

When the network device and the terminal device communicate with each other, the network device may manage one or more cells, and each cell may provide a service for at least one terminal device. In a possible implementation manner, the network device 111 and the terminal devices 121 to 123 form a single-cell communication system, and without loss of generality, a cell is denoted as cell # 1. Network device 111 may be a network device in cell #1, or network device 111 may serve a terminal device (e.g., terminal device 121) in cell # 1.

It should be noted that a cell may be understood as an area within the wireless signal coverage of a network device.

Fig. 2 is another schematic diagram of a wireless communication system 200 suitable for use in embodiments of the present application. As shown in the figure, the technical solution of the embodiment of the present application may also be applied to D2D communication. The wireless communication system 200 includes a plurality of terminal apparatuses, such as the terminal apparatus 201 to the terminal apparatus 203 in fig. 2. The terminal 201 to the terminal 203 can directly communicate with each other. For example, terminal device 201 and terminal device 202 may transmit data to terminal device 203 separately or simultaneously.

It should be understood that fig. 1 and 2 are only exemplary, and the present application is not limited thereto. For example, the embodiments of the present application may also be applied to a random access scenario (e.g., a 5G NR random access procedure).

It should also be understood that the network device in the wireless communication system may be any device having a wireless transceiving function. Such devices include, but are not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (Node B, NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (e.g., Home evolved NodeB, or Home Node B, HNB), BaseBand Unit (Base band Unit, BBU), Access Point (AP) in Wireless Fidelity (WIFI) system, etc., and may also be 5G, such as NR, gbb in system, or TRP, transmission Point (TRP or TP), one or a group of antennas (including multiple antennas, NB, or a transmission panel) of a Base Station in 5G system, such as a baseband unit (BBU), or a Distributed Unit (DU), etc.

In some deployments, the gNB may include a Centralized Unit (CU) and a DU. The gNB may further include an Active Antenna Unit (AAU). The CU implements part of the function of the gNB and the DU implements part of the function of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, and implementing functions of a Radio Resource Control (RRC) layer and a Packet Data Convergence Protocol (PDCP) layer. The DU is responsible for processing a physical layer protocol and a real-time service, and implements functions of a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a Physical (PHY) layer. The AAU implements part of the physical layer processing functions, radio frequency processing and active antenna related functions. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as the RRC layer signaling, may also be considered to be transmitted by the DU or by the DU + AAU under this architecture. It is to be understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be divided into network devices in an access network (RAN), or may be divided into network devices in a Core Network (CN), which is not limited in this application.

It should also be understood that terminal equipment in the wireless communication system may also be referred to as User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. The embodiments of the present application do not limit the application scenarios.

To facilitate understanding of the embodiments of the present application, a brief description of several terms referred to in the present application will be given below. 1. Physical uplink control channel

A Physical Uplink Control CHannel (PUCCH) is used to carry Uplink Control information, and compared with LTE, an NR PUCCH supports 5 different formats, and can be divided into a short format and a long format according to the number of symbols occupied in a time domain, where the short format occupies 1-2 symbols and can carry 1-2 bits (bit) information, and the long format occupies 4-14 symbols and can carry information greater than 2 bits. The purpose of introducing the short-format PUCCH by the NR is to shorten the HARQ-ACK (Hybrid Automatic Repeat-Request Acknowledgement) feedback delay, and the long format still allows for a long duration to ensure coverage.

In NR, all PUCCHs of 2 or more symbols are configurable hopping, including intra-slot and inter-slot hopping, considering flexibility of system configuration. The number of symbols in the first hop (hop) during hopping is such that the remaining symbols are in the second hop.

PUCCH format 0134 uses low peak-to-average power ratio (low-PAPR) sequences, which can reduce the PAPR for uplink transmission. The low-PAPR sequence is generated by cyclic shift on the basis of a base sequence, which is divided into two cases according to the difference in sequence length.

2. Physical uplink shared channel

A Physical Uplink Shared Channel (PUSCH) is used to carry data from the transport Channel USCH. By shared is meant that the same physical channel may be used by multiple users in a time-shared manner, or that the channel has a short duration.

3. Controlling resource collections

A Control-Resource Set (CORESET) mainly indicates the number of symbols (time domain) occupied by a physical downlink Control channel and the number of RBs (frequency domain), that is, the CORESET indicates the frequency domain Resource including the PDCCH. The CORESET comprises a plurality of PRBs, the Minimum number of the PRBs is 6 time domains, the symbol number is 1-3, each cell can be configured with a plurality of CORESETs (0-11), wherein the COREST0 can be used for Remaining Minimum System Information (RMSI) (which can also be used for scheduling of a System Information Block Type 1 (SIB 1).

4. Physical downlink control channel

A Physical Downlink Control Channel (PDCCH) carries scheduling and other Control information, specifically including transport format, resource allocation, uplink scheduling grant, power Control, uplink retransmission information, and the like. The PDCCH channel is a set of physical resource elements, which carries uplink and downlink control information, and the PDCCH carrying information distinguishes common control information (common search space) and dedicated control information (dedicated search space) according to their different scopes.

5. Master information block

When a network side device is powered on, a Master Information Block (MIB) message is sent first, and then a series of System Information Block (SIB) messages are sent. The MIB message carries the most basic information, which relates to decoding of the physical downlink shared channel, and the UE can continue to decode data in the physical downlink shared channel, including decoding system message block information, by using parameters in the MIB only when decoding the MIB first.

6. Radio resource control state

RRC state, the terminal device has 3 RRC states: RRC connected state, RRC idle state, and RRC inactive state.

The RRC connected (connected) state (or, may also be referred to simply as connected state herein, "connected state" and "RRC connected state" are the same concept and the two designations may be interchanged): the terminal device establishes RRC connection with the network and can perform data transmission.

Herein, "idle state" and "RRC idle state" are the same concept, and the two designations may be interchanged): the terminal device does not establish an RRC connection with the network and the base station does not store the context of the terminal device. If the terminal device needs to enter the RRC connected state from the RRC idle state, an RRC connection establishment procedure needs to be initiated.

Herein, "deactivated dynamic," "deactivated," "inactive," "RRC inactive," or "RRC deactivated," etc. are the same concept, and these designations may be interchanged): the terminal device has previously entered the RRC connected state at the anchor base station, which then releases the RRC connection, but the anchor base station maintains the context of the terminal device. If the terminal device needs to enter the RRC connected state again from the RRC inactive state, an RRC connection recovery procedure (alternatively referred to as an RRC connection re-establishment procedure) needs to be initiated at the currently camped base station. Because the terminal device may be in a mobile state, the base station where the terminal device currently resides and the anchor base station of the terminal device may be the same base station or different base stations. Compared with the RRC establishment process, the RRC recovery process has shorter time delay and smaller signaling overhead. However, the base station needs to store the context of the terminal device, which occupies the storage overhead of the base station.

7. System message block

A System Information Block (SIB) is System Information broadcast by a base station and is divided into a plurality of types, so that it can be transmitted using different frequencies. There are 19 types of SIBs in total, and the scheduling information of the SIB is carried by the MIB or SB.

In order 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, so that the NR base station can identify the terminal device and complete subsequent data transmission. Taking initial access as an example, in an idle state (idle state), by receiving a Synchronization Signal Block (SSB) sent by an NR base station, an NR Legacy terminal device may implement time-frequency synchronization with the NR base station and obtain cell initial access configuration information corresponding to the NR base station, that is, system information block 1 (SIB 1) information, and configure a resource used by the terminal device to initiate random access and a continuous bandwidth resource including the random access resource in an SIB1, where the continuous bandwidth resource is defined as an uplink initial bandwidth part (BWP) in a current protocol. The uplink initial BWP may be used in a Physical Uplink Shared Channel (PUSCH) for transmitting information 3(message 3, Msg3) in a random access procedure, a Physical Uplink Control Channel (PUCCH) for transmitting information a (Msg a) and for transmitting hybrid automatic repeat request (HARQ) feedback in the random access procedure, where the HARQ feedback is feedback for information 4(message 4, Msg 4) in the random access procedure or for information B (message B, Msg B) in the random access procedure, and besides, resources of the Physical Random Access Channel (PRACH) in the random access procedure must be transmitted in the uplink initial BWP. Further, the terminal device may also ensure data transmission performance with the base station in the random access process and the RRC connection process through PUCCH frequency hopping and PUSCH frequency hopping, where a frequency range of the PUCCH frequency hopping and a frequency range of the PUSCH frequency hopping also need to be ensured within the uplink initial BWP. It is therefore necessary for the NR terminal device to define a frequency range that includes the above-mentioned data transmission resources as well as frequency hopping resources, so that it is guaranteed that a data transmission connection is established with the base station.

It should be understood that the form of uplink initial BWP herein may be not only a frequency resource set for guaranteeing random access data transmission, but also be used for data transmission in other scenarios.

In addition, even if the terminal device enters the connected state, under some conditions, the data transmission is completed based on the uplink initial BWP corresponding to the random access phase.

In conjunction with the above description, for NR red map UEs, in order to guarantee data transmission with the base station, it is also necessary to consider designing its uplink initial BWP for the red map UEs.

Fig. 3 is an architecture diagram of a random access phase system data transmission. In the prior art, first, in the random access phase, the frequency resource configuration of the uplink initial BWP is included in SIB1 information, and before the terminal device receives SIB1 information, data transmission between the terminal device and the base station is as shown in fig. 3, it can be observed that before the terminal device receives SIB1 information, the terminal device does not transmit uplink information, that is, there is no interaction between cells corresponding to NR base stations, and therefore, the NR base station (or network side device) cannot acquire the type of the terminal device, that is, it is not determined whether the terminal device receiving SIB1 information is a terminal device with bandwidth capability of 100MHz or a terminal device with bandwidth capability of not greater than 20MHz (for example, NR RedCap terminal device). This causes the following problems in the prior art:

(1) the uplink initial BWP bandwidth configured by the network device exceeds the bandwidth capability of the NR red map UE, resulting in no access for the NR red map terminal device.

For example, the uplink initial BWP includes PRACH resources, and according to the current protocol, the total PRACH resource bandwidth configured by the network device may exceed 20 MHz. On the other hand, in the NR system, there is a correspondence between the SSB and the PRACH resource (such as a preamble), the UE may select a corresponding preamble to initiate random access according to the detected SSB and the correspondence between the SSB and the preamble, the network device may determine, through the received preamble, an SSB beam direction detected by the UE that initiates the preamble, and send downlink data to the UE through the SSB beam direction corresponding to the preamble before establishing Radio Resource Control (RRC) connection with the UE, so that downlink data transmission performance may be ensured. However, since the total PRACH resource bandwidth configured by the network device may exceed 20MHz, the NR red beacon UE may not select the PRACH resource corresponding to the optimal SSB beam direction, which further affects data transmission performance of the red beacon UE, and even causes the red beacon UE to be unable to access.

(2) And limiting the uplink initial BWP bandwidth corresponding to the NR Legacy UE, and influencing the initial access performance of the NR Legacy UE.

The network device may configure the uplink initial BWP bandwidth size to a value not greater than the NR reccap UE bandwidth capability when configuring the uplink initial BWP bandwidth in consideration of the NR reccap UE that may exist in the system, so as to ensure the access of the reccap UE, but this may limit the performance of Legacy UE access. For another example, configuring the uplink initial BWP bandwidth according to the NR red map UE also affects the capacity of legacy UE access. For example, for NR Legacy UEs, the initial uplink BWP may be configured to 100MHz at maximum, whereas if NR red cp UEs and NR Legacy UEs are considered to share the initial uplink BWP, the bandwidth of the initial uplink BWP can only be configured to 20MHz, and the bandwidth reduction of the initial uplink BWP may reduce the access capacity of the NR Legacy UEs.

Fig. 4 is a schematic diagram of a resource load of a data transmission frequency resource. The first type terminal device may be a low-cost and low-bandwidth terminal device, such as an NR reccap UE, and the second type terminal device may be a Legacy terminal device (NR Legacy UE, such as an NR eMBB UE). As shown, the data transmission frequency resource for the non-connected state cannot exceed the bandwidth capability of the first type terminal device due to the limitation of the bandwidth capability of the first type terminal device, so that the data transmission between the network device and the first type terminal device can only be concentrated in the frequency range corresponding to the bandwidth capability of the first type terminal device in the non-connected state, such as the initial access phase. In consideration of the above, in a non-connected state, for example, in an initial access phase, the network device cannot identify each first type terminal device, and therefore, a data transmission frequency resource cannot be configured for each first type terminal device individually through a dedicated signaling of the terminal device, which may result in that the first type terminal devices that aim to establish an RRC connection with the network device in the non-connected state are concentrated in a frequency range, for example, 20 MHz. Consider that in the unconnected state, the 20MHz band would include transmissions for the following channels: preamble transmission, Msg3 transmission in the random access process, HARQ-ACK transmission for Msg4, and the like, and for a connected terminal device, the data transmission with the network device is completed by falling back to a corresponding data transmission frequency resource in a non-connected state under certain conditions. This results in an excessive load on the data transmission frequency resources in the unconnected state, especially when considering the number of connections of the first type of terminal equipment is large, which results in a further increased load on the data transmission frequency resources. For the second type terminal device, the above problem does not exist, because the requisite bandwidth capability of the second type terminal device is 100MHz, so that the network device can configure a data transmission frequency resource with a relatively large frequency resource range.

The distinction between the first terminal device and the second terminal device comprises at least one of:

1. the bandwidth capabilities are different. For example, the second type terminal device may support data transmission using 100MHz frequency domain resources and network devices on one carrier at maximum, and the first type terminal device may support data transmission using 20MHz, 10MHz, or 5MHz frequency domain resources and network devices on one carrier at maximum.

2. The number of the transmitting and receiving antennas is different. For example, the antenna configuration supported by the second type terminal device at the minimum is 4-transmission and 2-reception, that is, under the minimum antenna configuration, 4 receiving antennas are used to receive downlink data, and 2 transmitting antennas are used to transmit uplink data; and the maximum supported antenna configuration of the first type terminal device is lower than 4 rd-to-2 rd-to, for example, the first type terminal device UE only supports 2 rd-to-1 rd-to, or may also support 1 rd-to-1 rd-to, or may also support 2 rd-to-2 rd-to.

3. The maximum uplink transmission power is different. For example, the maximum uplink transmit power of the second type terminal device may be 23dBm or 26dBm, and the maximum uplink transmit power of the first type terminal device may be one of 4dBm to 20 dBm.

4. The protocol versions corresponding to the first type terminal device and the second type terminal device are different. For example, the NR Rel-15, NR Rel-16 terminal devices may be considered to be terminal devices of the second type, whereas the first type terminal devices may be considered to be NR Rel-17 terminal devices.

5. The first type terminal device and the second type terminal device support different Carrier Aggregation (CA) capabilities. For example, the second type terminal device may support carrier aggregation, while the first type terminal device does not support carrier aggregation; for another example, the first type terminal device and the second type terminal device both support carrier aggregation, but the maximum number of carrier aggregation simultaneously supported by the second type terminal device is greater than the maximum number of carrier aggregation simultaneously supported by the first type terminal device. For example, the second type terminal device may support aggregation of up to 5 carriers or 32 carriers simultaneously, while the first type terminal device supports aggregation of up to 2 carriers simultaneously.

6. The second type of terminal device supports Frequency Division Duplexing (FDD), while the first type of terminal device supports half duplex FDD. The first type terminal device and the second type terminal device have different data processing time capabilities. For example, the minimum time delay between the reception of the downlink data and the transmission of the feedback to the downlink data by the second type terminal device is smaller than the minimum time delay between the reception of the downlink data and the transmission of the feedback to the downlink data by the first type terminal device. The minimum time delay between the sending of the uplink data and the receiving of the feedback of the uplink data by the second type terminal equipment is smaller than the minimum time delay between the sending of the uplink data and the receiving of the feedback of the uplink data by the first type terminal equipment.

7. The second type terminal device has a different processing capability than the first type terminal device. The processing power of the first type of terminal device is lower than that of the second type of terminal device. For example, the first type terminal device and the second type terminal device have different processing time capabilities for data. For example, the minimum time delay between the reception of the downlink data and the transmission of the feedback to the downlink data by the second type terminal device is smaller than the minimum time delay between the reception of the downlink data and the transmission of the feedback to the downlink data by the first type terminal device. The minimum time delay between the sending of the uplink data and the receiving of the feedback of the uplink data by the second type terminal equipment is smaller than the minimum time delay between the sending of the uplink data and the receiving of the feedback of the uplink data by the first type terminal equipment. As another example, the maximum Transport Block Size (TBS) that can be processed by the first type of terminal device is smaller than the TBS that can be processed by the second type of terminal device. For another example, the maximum downlink modulation order (e.g., 64QAM) that can be processed by the terminal device of the first type is smaller than the maximum downlink modulation order (e.g., 256QAM) that can be processed by the terminal device of the second type, and/or the maximum uplink modulation order (e.g., 64QAM or 16QAM) that can be processed by the terminal device of the first type is smaller than the maximum uplink modulation order (e.g., 256QAM or 64QAM) that can be processed by the terminal device of the second type. For another example, the number of hybrid Automatic Repeat requests (HARQ) supported by the first type terminal device is smaller than the number of HARQ supported by the second type terminal device.

8. The transmission rate of the uplink (or downlink) transmission peak of the second type terminal device is different from the uplink (or downlink) transmission peak rate corresponding to the first type terminal device. The uplink (or downlink) transmission peak rate corresponding to the first type terminal device is lower than the uplink (or downlink) transmission peak rate of the second type terminal device.

In the embodiment of the present application, the first type terminal device takes an NR red cap terminal device as an example.

Fig. 5 shows a system architecture diagram for wireless access suitable for embodiments of the present application. As shown in the figure, the network device and the terminal device of the present application are connected by an air interface.

In this application, terminal devices, including devices that provide voice and/or data connectivity to a user, may include, for example, handheld devices having wireless connection capabilities or processing devices connected to wireless modems. More specifically, the UE may be, for example, an LTE terminal, a 5G terminal, or a UE.

Network equipment, including Access Network (AN) equipment, such as a base station (e.g., AN access point), may refer to equipment in AN access network that communicates over the air with wireless terminal equipment over one or more cells. Optionally, for example, it may be: LTE eNB/HeNB/Relay/Femto/Pico, 5G base station.

Description of terminal device: in this application, the terminal device may further include a Relay (Relay), and both the terminal device and the network device may perform data communication may be regarded as the terminal device.

In this application, a cell may be understood as a carrier.

It should be noted that although a low-power, low-cost, or low-complexity terminal device is exemplified in the present application, the illustrated embodiments are also applicable to other types of terminal devices, such as NR Rel-17 or beyond. For convenience of description, the present application will be described taking NR red map UE as an example.

It should be noted that, in the present application, the data transmission frequency resource, or the maximum frequency resource for PUSCH transmission, the maximum frequency resource for PUCCH transmission, and the maximum frequency resource for NR red map UE preamble transmission are all composed of consecutive Resource Blocks (RBs).

The embodiments provided in the present application will be described in detail below with reference to the accompanying drawings.

Fig. 6 is a schematic flow chart of a method for wireless access suitable for use in an embodiment of the present application. The method 600 may include the following steps.

In the following embodiments, for differentiation and without loss of generality, the network device is represented by a first device and the first type of terminal device (e.g., NR reccap UE) is represented by a second device.

It should be understood that the first device may have other forms, for example, the first device and the second device may both be a first type terminal device, or the first device may also be a second type terminal device (NR Legacy UE, for example, NR eMBB UE), and the second device may be the first type terminal device. And are not limited herein.

It should be understood that in the present application, the first type terminal device and the second type terminal device mainly differ in bandwidth capability, however, in the implementation process, the difference between the first type terminal device and the second type terminal device is not limited to the difference in bandwidth capability, and may also have the above-described distinguishing feature, that is, the difference in bandwidth capability is not an essential distinguishing feature.

S601 the first device determines a set of frequency resources.

It should be understood that, in some specific embodiments, this step is an optional step when the first device can directly determine the target frequency resource, and the first device can directly determine the target frequency resource and indicate the target frequency resource to the second device through the indication information. The target frequency resource is one of at least two first frequency resources, and the first frequency resource is used for transmitting random access uplink data of the first type terminal device.

It should be understood that, for clarity of description in the embodiments of the present application, a concept of a frequency resource set is introduced, that is: in a specific implementation process, the first device determines the nature of the frequency resource set to determine the at least two first frequency resources, regardless of whether the at least two first frequency resources are in a specific form of the resource set, it should be noted that the resource set concept in this embodiment does not limit the form of the set of the at least two first frequency resources nor the set identifier of the at least two first frequency resources, where the at least two first frequency resources may be consecutive or dispersed, and are collectively referred to as the resource set merely for convenience of explanation.

In the initial access configuration information, the first device may configure a frequency resource for transmitting random access uplink data of the second device, where the random access uplink data includes at least one of: a preamble sequence preamble transmitted in a random access process, Msg3 transmitted in the random access process, Msg a transmitted in the random access process, HARQ-ACK transmission for Msg 2 in the random access process, and HARQ-ACK transmission for Msg B in the random access process. The frequency resource is composed of consecutive frequency domain resource units (e.g., REs, or RBs). The frequency domain resource unit may be represented by a subcarrier, a Resource Element (RE), a Resource Block (RB), or another frequency domain resource unit. A frequency resource for transmitting random access upstream data as in the present application may be referred to as a bandwidth part (BWP) or an upstream initial BWP.

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

Optionally, the first device may further configure a frequency resource for transmitting random access uplink data of the second type terminal device. It should be noted that, when the first device is configured with a frequency resource for transmitting the random access uplink data of the second device and a frequency resource for transmitting the random access uplink data of the second type terminal device, respectively, the frequency resource for transmitting the random access uplink data of the second device and the frequency resource for transmitting the random access uplink data of the second type terminal device may be Frequency Division Multiplexing (FDM), or frequency domain resources may partially overlap, or the frequency resource for transmitting the random access uplink data of the second type terminal device includes the frequency resource for transmitting the random access uplink data of the second device.

For example, in this application, the network device configures, for the NR rdcap terminal device, a BWP set (corresponding to a frequency resource set) for the NR rdcap terminal device to transmit random access upstream data, where the set includes at least two upstream initial BWPs, where the at least two upstream initial BWPs may be used only by the NR rdcap terminal device to transmit random access upstream data, or one of the at least two upstream initial BWPs includes a BWP used by the NR Legacy terminal device to transmit random access upstream data, that is, an upstream initial BWP corresponding to the NR Legacy terminal device.

Illustratively, the first device may determine a frequency resource set, where the frequency resource set includes at least two first frequency resources, the first frequency resources are used for transmitting random access uplink data of the first type terminal device, and the target frequency resource is one of the frequency resource set.

Further, after determining the frequency resource set, the first device may notify the second device of the frequency resource set in a broadcast information notification manner or an RRC dedicated signaling manner, which is not limited in this application.

S602 the first device sends indication information to the second device.

Illustratively, the first device transmits indication information indicating a parameter of a set of frequency resources.

For example, the indication information may be used to indicate at least one of the following parameters: the number of the first frequency resources included in the frequency resource set, the frequency domain position 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 may determine the frequency domain configuration parameter of the first frequency resources included in the frequency resource set according to the indication information. The parameters of the frequency resource set may further include other configurations, for example, configuration information for physical uplink shared channel (PDSCH) transmission included in the frequency resources, and/or configuration information for Physical Uplink Control Channel (PUCCH) transmission.

For example, the first device sends indication information indicating at least 2 BWP configuration information for transmitting the second device random access uplink data.

It should be understood that the first frequency resource in the present application may correspond to BWP.

It should be understood that the initial uplink BWP of the second device may be a first frequency resource, where the first frequency resource may be not only a frequency resource for guaranteeing random access to data, but also a frequency resource for transmitting other data.

In a possible implementation manner, the first device may notify the second device of at least two first frequency resources by broadcasting an information notification.

Specifically, the first device may indicate at least two first frequency resources to the second device through Location And Bandwidth for a red beacon UE included in SIB 1. That is, the first device may directly indicate, to the second device, a frequency resource (e.g., uplink initial BWP corresponding to NR red map terminal device) for random access uplink data transmission by the second device through SIB 1. For example, if the frequency resource set includes N first frequency resources, each of the first frequency resources may include a frequency resource for the second device to randomly access uplink data transmission, the first device may directly indicate the configuration information of the first frequency resources included in the frequency resource set to the second device through a Location And Bandwidth for a recovery beacon UE in an SIB 1.

It should be understood that the broadcast information here may be information carried by a Physical Broadcast Channel (PBCH), such as information included in MIB, or may be information included in control information of scheduling system information block SIB transmission or information included in SIB information, where the control information of scheduling SIB transmission may be carried in PDCCH and the SIB information may be carried in PDSCH.

In a possible implementation manner, the first device may notify the second device of the number N of the first frequency resources included in the frequency resource set in a manner of broadcasting an information notification. In addition to being directly indicated by SIB1 or other SIBs, it may also be indicated by information carried by PBCH. Further optionally, when the information is notified through the PBCH bearer, N may be indicated through a reserved bit (reserved bit) in the MIB or a reserved bit corresponding to the SSB index. For example, in an aspect, in a frequency range (frequency range 1, FR1) not greater than 6GHz, the reserved bit corresponding to the SSB index has 2 bits, and the number N of the first frequency resources can be indicated by the 2 bits or 1bit therein, where N is an integer greater than or equal to 2. On the other hand, on FR2 greater than 6GHz, since the beam direction is more, the reserved bit corresponding to the SSB index is 0bit, but considering the initial access, the bandwidth capability corresponding to the second device is not less than 50MHz or not less than 100MHz, in this case, only one first frequency resource may be defined for the second device, or the second device and the second type terminal device may share the uplink initial BWP, so the definition of the frequency resource set for the second device may not be considered on FR 2. That is, preferably, in the present scheme, only for FR1, for the second device, a frequency resource set is defined, and a parameter of the frequency resource set may be indicated by a reserved bit of a corresponding SSB index.

In one possible implementation, the first device may indicate the set of frequency resources to the second device through RRC dedicated signaling.

Specifically, the first device may configure the frequency resource set through RRC dedicated signaling when the second device falls back to the RRC inactive state, and may be configured to perform data transmission with the first device through 1 frequency resource in the frequency resource set for transmitting random access uplink data of the first type terminal device when the second device is in the unconnected state.

S603 the second device determines a target frequency resource.

In order to ensure data transmission between the second device and the first device, the second device needs to establish a connection with the first device through a random access process, so that the first device can identify the second device and complete subsequent data transmission. Taking initial access as an example, when a second type terminal device is in an idle state (idle state), the second device may implement time-frequency synchronization with a first device and obtain cell initial access configuration information corresponding to the first device by receiving information sent by the first device.

For example, the second device may determine one target frequency resource from the at least two first frequency resources by determining the at least two first frequency resources.

It should be understood that the second device may determine the at least two first frequency resources not only according to the indication information sent by the first device, but also according to an association relationship with other resources in the system, which is not limited in this application.

In a possible implementation manner, the second device may determine at least two first frequency resources according to the received indication information sent by the first device.

Specifically, the number N of first frequency resources may be associated with a transmission bandwidth for downlink system information of the second type terminal device, and the larger the bandwidth is, the larger the number N is.

In particular, the number N of first frequency resources may be associated with frequency resources for transmitting random access uplink data of the second type terminal device. The network device notifies configuration information of frequency resources for transmitting random access uplink data of the second type terminal device (for example, configuration information of uplink initial BWP for transmitting random access uplink data of the second type terminal device) through SIB1, and the first type terminal device determines the number N of first frequency resources according to a preset rule (i.e., an association relationship between the number N of first frequency resources and the frequency resources for transmitting random access uplink data of the second type terminal device). The larger the frequency resource for transmitting the random access uplink data of the second type terminal device is, the larger the number N of the first frequency resources is.

Specifically, the number N of the first frequency resources may be associated with a carrier bandwidth notified by the network device or a frequency band in which the system carrier is located. For example, the network device notifies the terminal device of the system carrier bandwidth information through the SIB1, and the second device determines the number N of the first frequency resources according to the association relationship between the number N of the first frequency resources and the system carrier bandwidth. The larger the system carrier bandwidth, the larger the number N of first frequency resources.

It should be understood that the second device may determine the number N of the first frequency resources according to one or more of a bandwidth of a system carrier, a frequency band where the system carrier is located, a frequency resource for transmitting random access uplink data of the second type terminal device, and a transmission bandwidth for transmitting downlink system information of the second type terminal device, which is not limited in this application. The transmission bandwidth for transmitting the downlink system information of the second-type terminal device may be a transmission bandwidth of the downlink initial BWP corresponding to the second-type terminal device, for example, a frequency domain resource corresponding to core set #0 indicated by the pdcch-ConfigSIB1 control field in the MIB.

Specifically, the first device sends indication information, and the second device determines the number of the first frequency resources in the frequency resource set according to the indication information. The specific form of the indication information may be a broadcast information notification manner or an RRC dedicated signaling manner, and reference may be made to S602 for the form of the broadcast information notification or the RRC dedicated signaling, which is not described herein again for brevity.

In another possible implementation manner, the second device determines the first frequency resource according to the number of the first frequency resources.

Specifically, the second device may determine at least one first frequency resource in the frequency resource set according to the number N of the first frequency resources and the frequency resource used for transmitting the random access uplink data of the second type terminal device, for example, determine a frequency location of each first frequency resource.

For example, fig. 7 is a schematic diagram of determining a size of a first frequency resource, for example, a schematic diagram of determining a size of a resource block of the first frequency resource, which is suitable for the embodiment of the present application. As shown in the figure, the first device notifies the second device of determining the number N of first frequency resources through the indication information, where N is an integer greater than or equal to 2, and the second device determines, according to the number N of first frequency resources and frequency resources used for transmitting random access uplink data of the second type terminal device, the size of a resource block of each of the N first frequency resources in the non-connected state, where N is 2.

Assuming that a frequency resource for transmitting random access uplink data of a second type terminal device includes M consecutive RBs, M being an integer greater than or equal to 1, if M is divisible by N, the size of a resource block of each first frequency resource may be M/N RBs; if M can not be divided by N, the size of the resource block of N-1 first frequency resources is ceiling (M/N) or floor (M/N), and the size of the resource block of the other 1 first frequency resources is M- (N-1) ceiling (M/N) or M- (N-1) floor (M/N), wherein ceiling (M/N) represents an integer which is larger than M/N and is closest to M/N, and floor (M/N) represents an integer which is smaller than M/N and is closest to M/N. In this embodiment, the starting point or the ending point of the first frequency resource may be aligned with the starting point or the ending point of a frequency resource (e.g., an uplink initial BWP corresponding to the second type terminal device) for transmitting random access uplink data of the second type terminal device, and then the determined size of the resource block of the first frequency resource is used to determine the ending point or the starting point of the first frequency resource. Taking fig. 7 as an example, the starting point (or end point) of the first frequency resource #1 is aligned with the starting point of the frequency resource for transmitting the random access uplink data of the second type terminal device, and the resource block size of the first frequency resource #1 is determined in the above manner, and in combination with these two features, the second device can determine the end point (or starting point) of the first frequency resource # 1. The second frequency resource has the same description mode, and is not described in detail.

Fig. 8 is another diagram illustrating determining a size of a first frequency resource according to an embodiment of the disclosure. As shown in the figure, the second device may further understand that the second device may determine, according to the number N of the first frequency resources and the frequency resources used for transmitting the random access uplink data of the second type terminal device, N first frequency resources that may be used for data transmission in the non-connected state according to the number N of the first frequency resources and a part of the frequency resources used for transmitting the random access uplink data of the second type terminal device. The determination of the size of the resource block of each first frequency resource is as described above, and the determination manner of the start point or the end point of each first frequency resource is similar to that described above, except that here, the start point or the end point of the frequency resource used for transmitting the random access uplink data of the second type terminal device needs to be replaced by a part of the start point or the end point of the frequency resource used for transmitting the random access uplink data of the second type terminal device, and for brevity, no further description is given here.

It should be noted that, in this embodiment of the application, a resource block size of a first frequency resource included in the frequency resource set may be a resource block size corresponding to a bandwidth capability of the second device, for example, a bandwidth of the first frequency resource may be 20MHz, 10MHz, or 5 MHz. The starting point or the ending point of the first frequency resource may be determined by the number N of the first frequency resources and the frequency resource used for transmitting the random access uplink data of the second type terminal device, or a part of the frequency resource used for transmitting the random access uplink data of the second type terminal device.

For example, the second device may determine a location of each first frequency resource in the set of frequency resources according to the number N of first frequency resources and the number of random access preamble RACH resources, wherein the random access preamble resources are used to indicate at least one of: and the terminal equipment sends code resources, time resources and frequency resources corresponding to the Preamble sequence Preamble. For example, the code resource corresponding to the preamble sequence preamble can be represented by a preamble root sequence and cyclic shift, the frequency resource corresponding to the preamble sequence preamble can be represented by frequency division multiplexing RACH occasion (FDMed RACH occasion, FDMed RO), and the time resource corresponding to the preamble sequence preamble can be represented by RACH slot and/or RACH period. The random access preamble resource is a resource that the network device may pre-configure to the first type terminal device for the first device, and may also pre-configure to the second type terminal device for the first device, which is not limited herein.

In this way, the description of the format of the broadcast information and the RRC dedicated signaling is the same as the description above, and is not repeated for brevity.

Fig. 9 is a diagram illustrating a method according to resource allocation of a random access preamble according to an embodiment of the present application. The second device may determine locations of the N first frequency resources according to a number K of Frequency Division Multiplexing (FDM) RACH Occasions (ROs) included in the RACH resources and a number N of the first frequency resources. In the NR system, the RACH resource configuration is as shown in fig. 9, that is, within one RACH configuration period (RACH configuration period), at least 1 time domain RACH occasion (time RACH occasion) may be included, and within 1 time RACH occasion, at least 1 and at most 8 FDMed ROs may be included, where K is 4 as an example in the figure, that is, the FDMed RO may represent a frequency resource location corresponding to the RACH resource. The frequency resource location information of the first frequency resource is at least two items of information of a start location, an end location and a bandwidth location of the first frequency resource.

Fig. 10 is a diagram illustrating determining a location of a first frequency resource according to an embodiment of the disclosure. As shown in the figure, assuming that the index corresponding to the FDMed ROs is 0 to K-1 (for simplicity of description, the index corresponding to the FDMed ROs is represented by RO index), the RO index corresponding to the index mod (ceil (K/N)) -0 may be used as the starting point of one first frequency resource, and ceil (K/N) may also be represented by floor (K/N). For example, if K is 4 and N is 2, the RO index satisfying RO index mod (ceil (4/2)) > 0 may be 0 or 2, and the starting points of the 2 first frequency resources may be a frequency position (frequency position 1) corresponding to the lowest RB of the frequency resource corresponding to RO index 0 and a frequency position (frequency position 2) corresponding to the lowest RB of the first frequency resource corresponding to RO index 2, respectively, the ending point of the first frequency resource starting at frequency position 1 may be frequency position 2, the ending point of the first frequency resource starting at frequency position 2 may be a frequency position (frequency position 3) corresponding to the highest RB of the frequency resource corresponding to RO index K-1, or the ending point of the first frequency resource starting at frequency position 2 may be a frequency position (frequency position 4) corresponding to the highest RB of the uplink initial BWP including FDMed RO, it is assumed here that the size of the frequency resources comprised between frequency location 2 and frequency location 4 does not exceed the bandwidth capability of the second device).

For example, an RO index corresponding to a condition that RO index mod (ceil (K/N)) -0 is satisfied is taken as a starting point of the first frequency resource, and an end point corresponding to the first frequency resource may be determined according to a bandwidth capability corresponding to the second device (i.e., a frequency bandwidth between the starting point and the end point of the first frequency resource determined in this way is equal to the bandwidth capability corresponding to the second device); or, the end point corresponding to the first frequency resource may also be determined according to the boundary of the initial BWP including the FDMed RO, while ensuring that the frequency bandwidth between the start point and the end point corresponding to the data transmission frequency is not greater than the bandwidth capability corresponding to the second device; alternatively, the end point corresponding to the first frequency resource may be a frequency position corresponding to the highest RB or a frequency position corresponding to the lowest RB of the frequency resource corresponding to another RO index. It should be noted that, the magnitude relationship between the absolute frequencies corresponding to the start point and the end point of the first frequency resource is not limited, that is, the absolute frequency corresponding to the start point of the first frequency resource may be smaller than the absolute frequency corresponding to the end point of the first frequency resource, or may be larger than the absolute frequency corresponding to the end point of the first frequency resource.

It should be understood that the index corresponding to the FDMed RO may be understood as that, within one time domain RACH occase included in the RACH resource configuration, the included FDMed ROs are arranged in a corresponding order according to frequency positions from small to large (or from large to small). For example, RO #0 to RO #3 correspond to the frequency positions from small to large in the above figure.

In another possible implementation manner, the second device may determine the first frequency resource according to the uplink system carrier bandwidth notified by the first device.

Specifically, the second device may determine a starting point or an ending point of the first frequency resource through the uplink system carrier bandwidth and the number of the first frequency resources notified by the first device, and then determine that the channel transmission bandwidth of the second device is the size of the first frequency resource.

Specifically, the second device may determine a starting point of the first frequency resource and a size of the first frequency resource, or determine an ending point of the first frequency resource and the size of the first frequency resource, through the uplink system carrier bandwidth and the number of the first frequency resources.

By determining the at least two first frequency resources, the second device may determine the target frequency resource according to information of the at least two first frequency resources.

In a possible implementation manner, the association relationship between the target frequency resource and the SSB may be embodied by an association relationship between the number P of SSBs actually sent by the first device and the target frequency resource in the first frequency resource.

Specifically, the first device may indicate, through the indication information, the number P of SSBs actually sent, where different SSBs correspond to different first frequency resources, and the second device determines 1 target frequency resource from the first frequency resources according to the selected SSB and the association relationship between the SSB and the first frequency resource. The first device may indicate the first device by broadcasting an information notification or RRC dedicated signaling, which is not limited in this application.

For example, the first device may indicate the actually sent SSB number P to the second device by sending indication information, where the indication information may be in a broadcast information manner, and the specific implementation of P based on broadcast information indication may refer to the foregoing description, and for brevity, is not described herein again; alternatively, the first device may also indicate P through RRC-specific signaling, for example, the first device may indicate P through RRC-specific signaling when the reccap UE falls back to an RRC inactive state.

Specifically, fig. 11 is a schematic diagram of determining a target frequency resource suitable for the present application. The different SSBs determined by the second device in the initial access process have an association relationship with the first frequency resource, 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 relationship between the different SSBs and the N first frequency resources may be as shown in fig. 11, or may adopt other manners, which is not specifically limited herein. Wherein, the number of SSBs corresponding to each first frequency resource in the frequency resource set may be determined according to P/N, and when P cannot be divided by N, one implementation manner is that N-1 first frequency resources may correspond to ceiling (P/N) or floor (P/N) SSBs, and wherein 1 first frequency resource may 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 SSBs actually sent by the first device may be determined according to the order from small to large of the SSBs indexes, where the SSBs actually sent by the first device correspond to each first frequency resource in the frequency resource set. As shown in the figure, if P is 5 and N is 2, the number of SSBs corresponding to 1 first frequency resource in the frequency resource set may be 3, and the number of SSBs corresponding to another first frequency resource may be 2, and then, in combination with the SSB index, the first 3 SSBs may be mapped to 1 first frequency resource in the frequency resource set with a lower frequency resource location, and the remaining 2 SSBs may be mapped to 1 first frequency resource in the frequency resource set with a higher frequency resource location.

Specifically, fig. 12 is another schematic diagram of a method for determining a first frequency resource according to an embodiment of the present application. As shown in the figure, the association relationship between different SSBs and N first frequency resources may be determined according to the relationship between the index value corresponding to the actually sent SSB and the number N of first frequency resources. Taking a frequency band not lower than 3GHz and not greater than 6GHz on FR1 as an example, within this frequency band range, the first device can send 8 SSBs at maximum, the corresponding SSB indexes are 0 to 7 respectively, in the figure, 5 actually sent SSBs are taken as an example, the actually sent SSB index is 0/1/2/5/7, and one implementation manner of the relationship between the SSB index values index and N is to determine 1 first frequency resource in the frequency resource sets corresponding to different SSBs according to the result of index mod N, where mod represents a remainder operation. Based on this, in fig. 12, the SSB with the remainder result of 0 may correspond to one first frequency resource, and the SSB with the remainder result of 1 may correspond to another first frequency resource. In this embodiment, the SSB index value may be represented by other manners, for example, the actually transmitted SSBs may be sorted and numbered in the actually transmitted SSB set, and as an example, in fig. 12, in addition to representing the SSB index by using SSB index 0/1/2/5/7, the SSB index may also be represented by SSB index ' 0-4, where SSB index 0/1/2/5/7 may respectively correspond to SSB index ' 0/1/2/3/4, and at this time, the result of SSB index ' mod N may be used to determine 1 first frequency resource in the frequency resource sets corresponding to different SSBs.

After determining different frequency resources in corresponding first frequency resources between different SSBs and the first frequency resource, the second device may determine 1 first frequency resource according to the selected SSB and 1 first frequency resource in the frequency resource set corresponding to the SSB.

For example, in an initial access phase, the second device may select a suitable SSB according to the received SSB, and once the SSB is selected, may determine a first frequency resource corresponding to the SSB, that is, a target frequency resource, and may further complete random access uplink data transmission or other data transmission by using the target frequency resource.

Specifically, the association relationship between the first frequency resource and the SSB may be embodied by an association relationship between the maximum number L of SSBs that can be sent by the first device and the first frequency resource. The maximum number L of SSBs that can be sent by the first device has an association with the first frequency resource, different SSBs may correspond to different first frequency resources, and the second device determines 1 frequency resource for transmitting random access uplink data of the second type terminal device according to the selected SSB and the association between the SSB and the first frequency resource. The maximum number L of SSBs that can be sent by the first device is predefined, and for a frequency band with a sub-3 GHz central frequency point, L is 4; for the frequency band with the central frequency point not greater than 6GHz, L is 8; for the frequency band with the central frequency point larger than 6GHz, L is 64. In a specific embodiment, the SSB number P actually sent in the above embodiment may be replaced by the maximum SSB number L that can be sent, and other operation manners are not changed and are not described in detail.

In another possible implementation manner, the first device may directly indicate an association relationship between the first frequency resource and the SSB, where the association relationship is used to determine that after the second device selects the SSB, random access uplink data or other uplink data may be sent through the first frequency resource associated with the SSB. The first device may directly configure 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 it is also a specific example that the first device notifies the association relationship through SIB 1. The first device may also notify the first device through other manners, such as through other broadcast information or RRC dedicated information, and the notification structure is not limited in any way.

And the second equipment can determine the target frequency resource by combining the selected determined SSB according to the incidence relation indicated by the first equipment.

The second device determines the target resource in the first frequency resource according to the association relationship between the first frequency resource and the SSB, which is advantageous in that the implementation is simple, and since in the NR system, the SSBs may represent different beam directions, and the geographical distribution of the second device in the system determines that the SSB beam directions selected by the second device in different geographical locations are different, the splitting on the first frequency resources of different second devices can be naturally implemented, the traffic load balancing is implemented, and the data transmission efficiency on each first frequency resource is ensured.

In another possible implementation manner, the second device determines, according to the association relationship between the first frequency resources and the RACH resources, that 1 first frequency resource is a target frequency resource.

Specifically, fig. 13 is a schematic diagram of determining a target frequency resource suitable for the present application. The RACH resources in a specific Time interval are arranged together according to the sequence of FDMed RO, Time Division Multiplexing (TDM) RACH opportunity TDMed RO in one RACH slot, and RACH slots in the specific Time interval, the RACH resources arranged together are numbered, and then the first frequency resources corresponding to different RACH resources are determined according to a sequential mapping or a manner of taking a surplus to the first frequency resource number N (refer to (1) in the association relationship between the first frequency resource and the SSB). As shown in the figure, it is assumed that a RACH resource configuration period is configured at a specific time interval, and in one RACH configuration period, 2 RACH slots are included, each slot includes 1 TDMed RO, and each TDMed RO includes 4 FDMed ROs on a corresponding time resource. Then, in one RACH configuration period, the corresponding numbers of the different RACH resources are identified as in the figure.

It should be noted that the specific time interval may be a RACH configuration period, or may also be an association pattern period (association pattern period) including an association relationship between the SSB and the RACH resource.

In a possible implementation manner, the second device may further determine, according to the following sequence, frequency resources corresponding to different RACH resources and used for transmitting random access uplink data of the second type terminal device.

For example, first, if the number of FDMed RO resources is greater than or equal to the number N of first frequency resources, the second device may determine, directly according to FDMed RO, a target frequency resource in the first frequency resources corresponding to different RACH resources; otherwise, if the number of TDMed RO resources in one RACH slot is greater than or equal to the number N of first frequency resources, the second device may determine, according to the TDMed RO, a target frequency resource in the first frequency resources corresponding to different RACH resources; otherwise, the target frequency resource in the first frequency resources corresponding to different RACH resources may be determined according to the RACH slot in the RACH configuration period or the association graph period.

It should be understood that multiple preamble sequences may be included in one FDMed RO, but preferably, when determining the first frequency resource corresponding to the RACH resource, different preambles within the same FDMed RO may correspond to the same first frequency resource, i.e., when determining the number of RACH resources, preambles within different FDMed ROs may not be counted. This has the advantage of simple implementation, since the number may not be large in consideration of the system carrier bandwidth even if the first frequency resource dedicated to the second device is configured, in which case it is not necessary to further subdivide the plurality of preambles included in the FDMed RO in determining the relationship between the RACH resource and the first frequency resource.

In another possible implementation manner, when configuring the first frequency resource, the first device may simultaneously indicate a RACH resource corresponding to the first frequency resource, or may also indicate a RACH resource index corresponding to a different first frequency resource. For example, the first device may directly indicate an association relationship between the first frequency resource and the RACH resource or RACH resource index, wherein the RACH resource index may be determined according to the above manner. The association relationship is used to determine that after the second device selects the preamble that needs to be used for random access, the random access uplink data or other uplink data may be sent through the first frequency resource associated with the preamble sequence.

It should be noted that, in the NR system, a preset association relationship exists between the SSB and the RACH resource sent by the first device, so that the first device can determine, through the RACH resource used by the second device in the random access process, an optimal downlink beam direction for performing downlink data transmission in a non-connected state, and ensure data transmission efficiency, where the RACH resource used by the second device in the random access process is the RACH resource determined to be used by the second device. Therefore, in the embodiment of the present application, since RACH resources used for transmission by the second device in the random access procedure are included on different first frequency resources, the association relationship between the SSB and the RACH resources can be determined in the following two ways: one is to define the association relationship between the SSB actually transmitted (or most 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 may correspond to all the SSBs transmitted by the first device; alternatively, the association relationship between the SSB actually transmitted (or most transmitted) by the first device and the entire RACH resource is defined by taking all RACH resources corresponding to all first frequency resources included in the set of frequency resources as a whole, and 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 maximally transmitted by the first device.

Illustratively, the first device may indicate the target frequency resource to the second device by means of indication information.

Specifically, the first device may determine the target frequency resource, indicate the target frequency resource to the second device in a broadcast information notification manner or in a form of RRC dedicated signaling, and the second device may directly determine the target frequency resource through the indication of the indication information, where reference may be made to S602 for the forms of broadcast information notification and RRC dedicated signaling, and details are not repeated here for brevity.

S604 the second device transmits random access uplink data to the first device.

Illustratively, after the second device determines the target frequency resource, the first device transmits random access uplink data, such as a PUSCH transmission included in Msg3 or Msg a, or a PUCCH transmission including HARQ-ACK for Msg4 or Msg B, and receives the random access uplink data from the second device on the target frequency resource.

It should be understood that the present embodiment is exemplified by one of the terminal devices of the first type, i.e. the second device, however, the set of frequency resources may be a set of frequency resources suitable for the terminal device of the first type.

Based on the above embodiment, the advantage of determining one first frequency resource by the set of frequency resources is: the SSB and RACH resources are information that can be obtained by the second device before entering the RRC connected state, so that the second device can determine the frequency resource range of the first frequency resource before the second device has not established the RRC connection with the first device, thereby implementing frequency hopping transmission of the PUSCH and PUCCH transmission channels, and ensuring data transmission performance before the RRC connected state.

In the embodiment of the present application, the frequency resource is composed of N consecutive/non-consecutive PRB/RBs, where N is a positive integer. Illustratively, the frequency domain resource is composed of N consecutive PRBs/RBs, where the frequency resource includes a target frequency resource, a first frequency resource, and a second frequency resource in the embodiment of the present application. For example, the frequency resource may be BWP.

In this embodiment, the determining, by the first type terminal device, the target frequency resource from the at least two first frequency resources may be configured by a network device (as an implementation manner of the first device in this embodiment), or may be understood as being enabled by a network. If the network device is not configured with the function, the number of the frequency resources for transmitting the random access uplink data corresponding to the first type terminal device may be only 1, and it can also be understood that the first frequency resource is the target frequency resource.

It should be noted that the target frequency resource and the first frequency resource in the embodiment of the present application may be used to transmit uplink data of the first type terminal device in an RRC idle state, and may also be used to transmit uplink data of the first type terminal device in an RRC connected state or an inactive state.

The various embodiments described herein may be implemented as stand-alone solutions or combined in accordance with inherent logic and are intended to fall within the scope of the present application.

It is to be understood that, in the above-described method embodiments, the method and the operation implemented by the terminal device may also be implemented by a component (e.g., a chip or a circuit) available for the terminal device, and the method and the operation implemented by the network device may also be implemented by a component (e.g., a chip or a circuit) available for the network device.

The method provided by the embodiment of the present application is described in detail above with reference to fig. 6 to 13. Hereinafter, a communication device according to an embodiment of the present application will be described in detail with reference to fig. 14 to 17. It should be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments, and therefore, for brevity, details are not repeated here, since the details that are not described in detail may be referred to the above method embodiments.

The above-mentioned scheme provided by the embodiment of the present application is introduced mainly from the perspective of interaction between network elements. It is understood that each network element, for example, the transmitting end device or the receiving end device, includes a corresponding hardware structure and/or software module for performing each function in order to implement the above functions. Those of skill in the art would appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the functional modules may be divided according to the above method example for the transmitting end device or the receiving end device, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation. The following description will be given taking the example of dividing each functional module corresponding to each function.

Fig. 14 is a schematic block diagram of a communication device provided in an embodiment of the present application. The communication device 1400 includes a transceiving unit 1410 and a processing unit 1420. The transceiving unit 1410 may implement corresponding communication functions, and the processing unit 1410 is configured to perform data processing. The transceiving unit 1410 may also be referred to as a communication interface or a communication unit.

In a possible implementation manner, the communication device 1400 may further include a storage unit, and the storage unit may be configured to store instructions and/or data, and the processing unit 1420 may read the instructions and/or data in the storage unit, so as to enable the communication device to implement the foregoing method embodiments.

The communication apparatus 1400 may be configured to perform the actions performed by the terminal device in the foregoing method embodiments, in this case, the communication apparatus 1400 may be a terminal device or a component configurable in the terminal device, the transceiving unit 1410 is configured to perform transceiving related operations on the terminal device side in the foregoing method embodiments, and the processing unit 1420 is configured to perform processing related operations on the terminal device side in the foregoing method embodiments.

Alternatively, the communication apparatus 1400 may be configured to perform the actions performed by the network device in the foregoing method embodiments, in this case, the communication apparatus 1400 may be a network device or a component configurable in the network device, the transceiving unit 1410 is configured to perform transceiving related operations on the network device side in the foregoing method embodiments, and the processing unit 1420 is configured to perform processing related operations on the network device side in the foregoing method embodiments.

As a design, the communication device 1400 is configured to perform the actions performed by the terminal device in the embodiment shown in fig. 6, and the transceiving unit 1410 is configured to: s602 and S604; the processing unit 1420 is configured to: and S603.

The communication apparatus 1400 may implement the steps or the flow executed by the terminal device corresponding to the method 600 according to the embodiment of the present application, and the communication apparatus 1400 may include a unit for executing the terminal device executing side in the method 600 in fig. 6. Also, the units and other operations and/or functions described above in the communication device 1400 are respectively for implementing the corresponding flows of the method 600 in fig. 6.

It should be understood that the specific processes of the units for executing the corresponding steps are already described in detail in the above method embodiments, and therefore, for brevity, detailed descriptions thereof are omitted.

In another design, the communication device 1400 is configured to perform the actions performed by the network device in the embodiment shown in fig. 6, and the transceiving unit 1410 is configured to: s602 and S604; the processing unit 1420 is configured to: and S601.

The communication apparatus 1400 may implement the steps or the flow corresponding to the steps or the flow performed by the network device in the method 600 according to the embodiment of the present application, and the communication apparatus 1400 may include a unit for performing the method performed by the network device in the method 600 in fig. 6. Also, the units and other operations and/or functions described above in the communication device 1400 are respectively for implementing the corresponding flows of the method 600 in fig. 6.

Wherein, when the communication device 1400 is configured to execute the method 600 in fig. 6, the transceiving unit 1410 is configured to execute steps S602 and S604 in the method 600.

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

As shown in fig. 15, an embodiment of the present application further provides a communication apparatus 1500. The communication device 1500 comprises a processor 1510, the processor 1510 being coupled to a memory 1520, the memory 1520 being adapted to store computer programs or instructions and/or data, the processor 1510 being adapted to execute the computer programs or instructions and/or data stored by the memory 1520 such that the method in the above method embodiments is performed. Wherein the memory 1520 is optional.

In one possible implementation, the communications apparatus 1500 can include one or more processors 1510.

In one possible implementation, as shown in fig. 15, the communication apparatus 1500 may further include a memory 1520.

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

In one possible implementation, the memory 1520 may be integrated with the processor 1510 or separately provided.

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

As an approach, the communication apparatus 1500 is configured to implement the operations performed by the terminal device in the above method embodiments.

For example, the processor 1510 is configured to implement processing-related operations performed by the terminal device in the above method embodiments, and the transceiver 1530 is configured to implement transceiving-related operations performed by the terminal device in the above method embodiments.

Alternatively, the communication apparatus 1500 is configured to implement the operations performed by the network device in the above method embodiments.

For example, the processor 1510 is configured to implement the processing-related operations performed by the network device in the above method embodiments, and the transceiver 1530 is configured to implement the transceiving-related operations performed by the network device in the above method embodiments.

The embodiment of the present application further provides a communication apparatus 1600, where the communication apparatus 1600 may be a terminal device or a chip. The communication apparatus 1600 may be used for executing the operations executed by the terminal device in the above method embodiments.

When the communication apparatus 1600 is a terminal device, fig. 16 shows a simplified structural diagram of the terminal device. As shown in fig. 16, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 16, and in an actual end device article, one or more processors and one or more memories may be present. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, the antenna and the radio frequency circuit having the transceiving function may be regarded as a transceiving unit of the terminal device, and the processor having the processing function may be regarded as a processing unit of the terminal device.

As shown in fig. 16, the terminal device includes a transceiving unit 1610 and a processing unit 1620. The transceiver 1610 may also be referred to as a transceiver, a transceiving means, etc. The processing unit 1620 may also be referred to as a processor, a processing board, a processing module, a processing device, etc.

In one possible implementation manner, a device for implementing a receiving function in the transceiving unit 1610 may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiving unit 1610 may be regarded as a transmitting unit, that is, the transceiving unit 1610 includes a receiving unit and a transmitting unit. A transceiver unit may also sometimes be referred to as a transceiver, transceiving circuitry, or the like. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

For example, in one implementation, processing unit 1620 is configured to perform the processing actions of fig. 6 on the terminal device side. For example, the processing unit 1620 is configured to execute the processing step in step S603 in fig. 6; the transceiving unit 1610 is configured to perform transceiving operations in steps S602 and S604 in fig. 6.

It should be understood that fig. 16 is merely an example and not a limitation, and the terminal device including the transceiving unit and the processing unit described above may not depend on the structure shown in fig. 16.

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

The embodiment of the present application further provides a communication apparatus 1700, where the communication apparatus 1700 may be a network device or a chip. The communication apparatus 1700 may be configured to perform the operations performed by the network device in the above method embodiments.

When the communication apparatus 1700 is a network device, it is a base station, for example. Fig. 17 shows a simplified base station structure. The base station includes 1710 portions and 1720 portions. The 1710 part is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; the 1720 section is mainly used for baseband processing, control of a base station, and the like. Portion 1710 may be generally referred to as a transceiver unit, transceiver, transceiving circuitry, or transceiver, etc. Portion 1720 is typically a control center of the base station, which may be generally referred to as a processing unit, for controlling the base station to perform the processing operations on the network device side in the above-described method embodiments.

The transceiver unit of part 1710, which may also be referred to as a transceiver or transceiver, includes an antenna and a radio frequency circuit, where the radio frequency circuit is mainly used for radio frequency processing. Alternatively, a device for implementing a receiving function in part 1710 may be regarded as a receiving unit, and a device for implementing a transmitting function may be regarded as a transmitting unit, that is, part 1710 includes a receiving unit and a transmitting unit. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like, and a transmitting unit may be referred to as a transmitter, a transmitting circuit, or the like.

Portion 1720 may include one or more boards, each of which 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 of the base station. If a plurality of single boards exist, the single boards can be interconnected to enhance the processing capacity. As an alternative implementation, multiple boards may share one or more processors, multiple boards may share one or more memories, or multiple boards may share one or more processors at the same time.

For example, in one implementation, the transceiving unit of part 1710 is configured to perform transceiving-related steps performed by a network device in the embodiment shown in fig. 6; portion 1720 is used to perform processing-related steps performed by the network device in the embodiment shown in fig. 6.

It should be understood that fig. 17 is only an example and not a limitation, and the network device including the transceiving unit and the processing unit described above may not depend on the structure shown in fig. 17.

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 and a communication interface; the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip.

Embodiments of the present application also provide a computer-readable storage medium, on which computer instructions for implementing the method performed by the terminal device or the method performed by the network device in the foregoing method embodiments are stored.

For example, the computer program, when executed by a computer, causes the computer to implement the method performed by the terminal device or the method performed by the network device in the above-described method embodiments.

Embodiments of the present application also provide a computer program product containing instructions, where the instructions, when executed by a computer, cause the computer to implement the method performed by the terminal device or the method performed by the network device in the foregoing method embodiments.

An embodiment of the present application further provides a communication system, where the communication system includes the network device and the terminal device in the foregoing embodiments.

It is clear to those skilled in the art that for convenience and brevity of description, any of the explanations and advantages provided above for relevant contents of any of the communication apparatuses may refer to the corresponding method embodiments provided above, and no further description is provided herein.

In the embodiment of the present application, the terminal device or the network device may include a hardware layer, an operating system layer running on 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 a memory (also referred to as a main memory). The operating system of the operating system layer may be any one or more computer operating systems that implement business processing through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer may include applications such as a browser, an address book, word processing software, and instant messaging software.

The embodiment of the present application does not particularly limit a specific structure of an execution subject of the method provided by the embodiment of the present application, as long as communication can be performed by the method provided by the embodiment of the present application by running a program in which codes of the method provided by the embodiment of the present application are recorded. For example, an execution main body of the method provided by the embodiment of the present application may be a terminal device or a network device, or a functional module capable of calling a program and executing the program in the terminal device or the network device.

Various aspects or features of the disclosure may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media.

The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device including one or more available media integrated servers, data centers, and the like. Available media (or computer-readable media) may include, for example but not limited to: magnetic or magnetic storage devices (e.g., floppy disks, hard disks (e.g., removable hard disks), magnetic tapes), optical media (e.g., compact disks, CD's, Digital Versatile Disks (DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memories (EPROM), cards, sticks, or key drives, etc.), or semiconductor media (e.g., Solid State Disks (SSD), usb disks, read-only memories (ROMs), Random Access Memories (RAMs), etc.) that may store program code.

Various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, but is not limited to: wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

It should be understood that the processor mentioned in the embodiments of the present application may be a Central Processing Unit (CPU), and may also be 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, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory referred to in the embodiments of the application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM). For example, RAM can be used as external cache memory. By way of example and not limitation, RAM may include the following forms: 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 SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and direct bus RAM (DR RAM).

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

It should also be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the above-described division of units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. Furthermore, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the scheme provided by the application.

In addition, functional units in the embodiments of the present application may be integrated into one unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof.

When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the present application are all or partially generated upon loading and execution of computer program instructions on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. For example, the computer may be a personal computer, a server, or a network appliance, among others. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wirelessly (e.g., infrared, wireless, microwave, etc.). With regard to the computer-readable storage medium, reference may be made to the above description.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims and the specification.

Claims

1. A method of wireless access, the method being applicable to a first type of terminal device, comprising:

determining a target frequency resource, wherein the target frequency resource is one of at least two first frequency resources, and the first frequency resources are used for transmitting random access uplink data of the first type terminal equipment;

and transmitting random access uplink data on the target frequency resource.

2. The method of claim 1, wherein the target frequency resource is determined according to at least one of:

random access preamble resources used in a random access procedure;

a number of random access preamble resources for the first type of terminal device;

a number of at least two of the first frequency resources.

3. The method according to claim 1 or 2, wherein 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, and wherein the correspondence between the random access preamble resource of the first type terminal device and the first frequency resource is configured by the network device.

4. The method according to any of claims 1 to 3, wherein the target frequency resource is determined according to a synchronization signal block and a correspondence of the synchronization signal block to the first frequency resource, the correspondence of the synchronization signal block to the first frequency resource being configured by a network device.

5. The method according to any of claims 1 to 4, wherein the target frequency resource is determined according to at least one of:

a synchronization signal block determined in an initial access procedure;

a number of synchronization signal blocks from the network device;

a number of the at least two first frequency resources.

6. The method according to any of claims 1 to 5, wherein each of the first frequency resources is determined according to the number of the first frequency resources and a second frequency resource, the second frequency resource is used for transmitting random access uplink data of a second type terminal device, and the second type terminal device has a different bandwidth capability from the first type terminal device.

7. The method according to any of claims 1 to 6, wherein each of the first frequency resources is determined according to the number of the first frequency resources and a frequency resource corresponding to a random access preamble resource for a second type of terminal device, the second type of terminal device having a different bandwidth capability than the first type of terminal device.

8. The method according to any of claims 1 to 7, wherein the amount of the first frequency resource is determined according to at least one of:

a bandwidth of a system carrier;

the frequency band of the system carrier;

the frequency resource is used for transmitting random access uplink data of a second type terminal device, and the bandwidth capacity of the second type terminal device is different from that of the first type terminal device;

and the transmission bandwidth is used for the downlink system information of the second type terminal equipment.

9. The method according to any of claims 1 to 5, wherein the target frequency resource is determined according to indication information from the network device.

10. A method for wireless access, the method being applicable to a network device, and comprising:

and receiving random access uplink data from the first type terminal equipment on the target frequency resource.

11. The method of claim 10, wherein the target frequency resource is determined according to at least one of:

random access preamble resources used in a random access procedure;

a number of the first frequency resources.

12. The method according to claim 10 or 11, wherein 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, and 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.

13. The method according to any of claims 10 to 12, wherein the target frequency resource is determined from a synchronization signal block and a correspondence of the synchronization signal block to the first frequency resource from the network device.

14. The method according to any of claims 10 to 13, wherein the target frequency resource is determined according to at least one of:

a synchronization signal block determined in an initial access procedure;

a number of synchronization signal blocks from the network device;

a number of the first frequency resources.

15. The method according to any of claims 10 to 14, wherein the size of each of the first frequency resources is determined according to the number of the first frequency resources and a second frequency resource, the second frequency resource is used for transmitting random access uplink data of a second type terminal device, and the second type terminal device has a different bandwidth capability from the first type terminal device.

16. The method according to any of claims 10 to 15, wherein the location of each of the first frequency resources is determined according to the number of the first frequency resources and the frequency resources corresponding to random access preamble resources for terminal devices of a second type, the second type terminal devices having different bandwidth capabilities than the first type terminal devices.

17. The method according to any of claims 10 to 16, wherein the amount of the first frequency resource is determined according to at least one of:

a bandwidth of a system carrier;

the frequency band of the system carrier;

18. The method according to any of claims 10 to 14, wherein the target frequency resource is determined from indication information from the network device.

19. An apparatus for data transmission, comprising:

a memory for storing computer instructions;

a processor for executing computer instructions stored in the memory, causing the apparatus for data transmission to perform the method of any of claims 1 to 9 or the method of any of claims 10 to 18.

20. A computer-readable storage medium, on which a computer program is stored which, when executed by an apparatus for data transmission, causes the apparatus for data transmission to perform the method of any one of claims 1 to 9 or the method of any one of claims 10 to 18.