CN111356204B

CN111356204B - Access method, device, terminal, computer storage medium and system

Info

Publication number: CN111356204B
Application number: CN201811588244.0A
Authority: CN
Inventors: 高新志
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-12-24
Filing date: 2018-12-24
Publication date: 2021-08-03
Anticipated expiration: 2038-12-24
Also published as: CN111356204A

Abstract

The embodiment of the application provides an access method, an access device, a terminal, a computer storage medium and a system, relates to the field of communication, and aims to reduce product design of a radio frequency feed-in digital distribution system and limit of product networking. The method specifically comprises the following steps: the terminal sends an access signal to the access network equipment, the access signal comprises a guard time GP, a cyclic prefix CP and a Sequence, and the terminal receives an access response from the access network equipment.

Description

Access method, device, terminal, computer storage medium and system

Technical Field

The present application relates to the field of communications, and in particular, to an access method, an apparatus, a terminal, a computer storage medium, and a system.

Background

The radio frequency feed-in digital distribution system is an indoor and outdoor coverage solution supporting multi-system and multi-service access, adopting a digitization technology and carrying wireless signal transmission and distribution based on optical fibers and network cables. Currently, a radio frequency feed-in digital distribution system is suitable for accessing a second Generation mobile communication technology (2G) system, a second Generation mobile communication technology (3rd-Generation, 3G) system, a Long Term Evolution (LTE), wireless communication signals of a Wireless Local Area Network (WLAN) and fixed network broadband signals.

The rf feed digital distribution system currently has a two-stage architecture shown in fig. 1 and a three-stage architecture shown in fig. 2. As shown in fig. 1, the secondary architecture is composed of an Access Unit (AU) and a Remote Unit (RU). The three-level architecture is composed of three parts, namely AU, Extended Unit (EU) and RU.

In the architecture of the RF feed-in digital distribution system, a Radio Frequency (RF) source needs to be processed in multiple stages, such as AU, EU, and RU, from the feed-in to the system to the final transmission, consuming a certain amount of time (generally more than 20 μ sec to 30 μ sec), and the consumed time is included in the transmission time covered by the source. Since the transmission time depends on the planned source cell radius, i.e. the time it takes for the source to propagate over the cell radius is the transmission time, the planned source cell radius > transmission time x speed of light is required in order to guarantee the application of the rf feed to the digital distribution system.

As the system evolves, the subsequent rf feed digital distribution system will support the New Radio (NR) technology rf feed of the fifth generation mobile communication technology (5th-generation, 5G) system. Due to its relatively low frequency and wide availability in the world, C band has available frequency spectrum in all countries, and at the same time, it can guarantee at least 200 megahertz (MHz) of available bandwidth, which is used as the main frequency band of 5G.

At present, cell radii under each application scenario are planned on the C-Band, but the cell radii planned under most application scenarios cannot meet the requirement of "planned source cell radius > transmission time x optical speed", which causes great limitations on product design and product networking of a radio frequency feed-in digital distribution system.

Disclosure of Invention

The embodiment of the application provides an access method, an access device, a terminal, a computer storage medium and a system, which can reduce the product design of a radio frequency feed-in digital distribution system and the limitation of product networking.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, an access method is provided, and the method may include: a terminal sends an access signal to access network equipment, and the length of the protection time (GP) of the access signal is determined according to the GP and a preset expression of the radius of a planning cell; the radius of the planned cell is greater than the expected transmission time multiplied by the speed of light; the terminal receives an access response from the access network device.

By the access method provided by the application, the radius of the planned cell is determined by the expected transmission time, and the length of the GP is obtained according to the relation between the GP and the radius of the planned cell. The terminal accesses the network through the access signal, and the radius of the cell is larger than the expected transmission time multiplied by the speed of light. Therefore, the transmission time consumed by the radio frequency feed-in digital distribution system is used as the expected transmission time to determine GP, so that the planned cell radius meets the requirement of products of the radio frequency feed-in digital distribution system on the transmission time, and the product design and the product networking limitation of the radio frequency feed-in digital distribution system are reduced.

The access signal may also be referred to as an access preamble, and may include a Cyclic Prefix (CP), a sequence (sequence), and a GP. A random access preamble may be included in the sequence.

Specifically, the planned cell radius depends on the length of the GP, and both the CP length of the access signal and the length of the sequence may be configured according to actual requirements, which is not specifically limited in the present application.

It should be noted that the access method provided in the present application may be a contention-based random access method, may also be a non-contention-based random access method, and may also be other access methods, which are not specifically limited in the present application.

With reference to the first aspect, in a possible implementation manner, the preset expression of the GP and the radius of the planned cell may be: planned cell radius ═ N_GP-device transmit receive delay) × c/2. Where c is the speed of light and x is the multiplication.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation, it is desirable that the transmission time is greater than or equal to 30 microseconds (us).

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner, the present application provides a specific GP length, which may include: the GP length of the access signal may be greater than 1844k × Ts. Wherein, k is 64,

with reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner, the CP length N of the access signal_CP＝N_GP+ Path Profile; wherein N is_GPThe Path Profile is a preset multipath time for the length of the guard time GP of the access signal.

It should be noted that the value of the Path Profile may be configured according to an actual scene, and this is not specifically limited in this embodiment of the application.

For example, the Path Profile may be configured to 96k in an indoor scenario and greater than 96k in an outdoor scenario.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner, the present application provides a specific sequence length, which may include: the sequence length of the access signal is equal to n x 2048k, n being an integer greater than or equal to 1.

With reference to the first aspect or any one of the foregoing possible implementations, in another possible implementation, the network subcarrier spacing provided by the access network device is greater than 15 kilohertz (kHz) and there is no continuous 1 millisecond (ms) uplink timing.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner, when the access method provided by the present application is a contention-based access manner, the access method provided by the present application may further include: the terminal sends a connection establishment request to the access network equipment; the terminal receives a connection establishment response from the access network equipment; for connection establishment and conflict resolution.

In a second aspect, an access method is provided, which may include: the access network equipment receives an access signal from a terminal, and the GP length of the access signal is determined according to a preset expression of GP and the radius of a planned cell; the radius of the planned cell is greater than the expected transmission time multiplied by the speed of light; and the access network equipment sends an access response to the terminal.

It should be noted that, the access method provided in the second aspect of the present application is a description of the access method provided in the first aspect or any one of the possible implementation manners from the perspective of the access network device, and specific implementation of the access method may refer to the first aspect or any one of the possible implementation manners, and is not described herein again.

In a third aspect, an access apparatus is provided and may include a processing module, a transmitting module, and a receiving module. The processing module is used for determining a random access preamble and constructing an access signal comprising the random access preamble; the length of the protection time GP of the access signal is determined according to a preset expression of the CP and the radius of the planning cell; the planned cell radius is larger than the expected transmission time multiplied by the speed of light. And the sending module is used for sending the access signal to the access network equipment. A receiving module, configured to receive an access response from the access network device.

By the access device, the radius of the planned cell is determined according to the expected transmission time, and the length of the GP is obtained according to the relation between the GP and the radius of the planned cell. The terminal accesses the network through the access signal, and the radius of the cell is larger than the expected transmission time multiplied by the speed of light. Therefore, the transmission time consumed by the radio frequency feed-in digital distribution system is used as the expected transmission time to determine GP, so that the planned cell radius meets the requirement of products of the radio frequency feed-in digital distribution system on the transmission time, and the product design and the product networking limitation of the radio frequency feed-in digital distribution system are reduced.

It should be noted that, the access apparatus provided in the third aspect of the present application is configured to execute the access method provided in the first aspect or any possible implementation manner, and specific implementation of the access apparatus may refer to the first aspect or any possible implementation manner, which is not described herein again.

In a fourth aspect, an access apparatus is provided and may include a receiving module, a processing module, and a transmitting module. The receiving module is used for receiving an access signal from a terminal, and the GP length of the access signal is determined according to a preset expression of GP and the radius of a planned cell; the planned cell radius is larger than the expected transmission time multiplied by the speed of light. The processing module is used for determining that the terminal is allowed to access according to the access signal and generating an access response; the sending module is used for sending the access response to the terminal.

It should be noted that, the access apparatus provided in the fourth aspect of the present application is configured to execute the access method provided in the second aspect or any possible implementation manner, and specific implementation of the access apparatus may refer to the second aspect or any possible implementation manner, which is not described herein again.

In a fifth aspect, the present application provides an access apparatus, where the access apparatus may implement the functions of the terminal in the above method examples, where the functions may be implemented by hardware, and may also be implemented by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions.

With reference to the fifth aspect, in a possible implementation manner, the access apparatus includes a processor and a transceiver in a structure, where the processor is configured to support the access apparatus to perform corresponding functions in the foregoing method. The transceiver is used to support communication between the access device and other devices. The access device may also include a memory for coupling with the processor that retains program instructions and data necessary for the access device.

In a sixth aspect, the present application provides a terminal including an access apparatus described in any one of the above aspects or any one of the possible implementation manners for performing a function of the terminal in the example of the method.

In a seventh aspect, the present application provides an access apparatus, where the access apparatus may implement the function of the access network device in the foregoing method example, where the function may be implemented by hardware, and may also be implemented by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions.

With reference to the seventh aspect, in a possible implementation manner, the structure of the access apparatus includes a processor and a transceiver, where the processor is configured to support the access apparatus to execute corresponding functions in the foregoing method. The transceiver is used to support communication between the access device and other devices. The access device may also include a memory for coupling with the processor that retains program instructions and data necessary for the access device.

In an eighth aspect, the present application provides an access network device, where the access network device includes any one of the foregoing aspects or any one of the foregoing possible implementation manners to describe an access apparatus for performing the function of the access network device in the method example.

In a ninth aspect, an embodiment of the present application provides an access system, including the terminal described in any aspect and the access network device described in any aspect.

In a tenth aspect, embodiments of the present application provide a computer storage medium for storing computer software instructions for the terminal, which includes a program designed to execute any one of the above aspects.

In an eleventh aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the access method of any of the above aspects.

The solutions provided in the fourth aspect to the eleventh aspect are used for implementing the access method provided in any one of the aspects, and therefore, the same beneficial effects can be achieved, and details are not repeated here.

Drawings

Fig. 1 is a schematic diagram of an rf-fed digital distribution system provided in the prior art;

FIG. 2 is a block diagram of another RF-fed digital distribution system provided by the prior art;

fig. 3 is a block diagram of a wireless communication system according to the present application;

fig. 4 is a schematic structural diagram of a terminal provided in the present application;

fig. 5 is a schematic structural diagram of an access network device provided in the present application;

fig. 6 is a schematic flowchart of an access method provided in the present application;

fig. 7 is a schematic flowchart of another access method provided in the present application;

fig. 8 is a schematic structural diagram of an access device provided in the present application;

fig. 9 is a schematic structural diagram of another access device provided in the present application;

fig. 10 is a schematic structural diagram of another access device provided in the present application;

fig. 11 is a schematic structural diagram of another access device provided in the present application.

Detailed Description

The application provides an access method, which reduces the product design of a radio frequency feed-in digital distribution system and the limitation of product networking by providing an access signal format, and the basic principle is as follows: the cell radius meeting the expected transmission time is planned by utilizing the principle that the cell radius is strongly related to the GP length in the access signal, and the GP length is determined according to the planned cell radius, so that the planned cell radius meets the requirement of products of the radio frequency feed-in digital distribution system on the transmission time, and the product design of the radio frequency feed-in digital distribution system and the limitation of product networking are reduced.

The access network device described in this application is a network side device for providing access service for a terminal in a cellular mobile network. In cellular mobile networks of different systems, the access network devices may be referred to differently, but all may be understood as the access network devices described in this application. The embodiment of the present application also does not specifically limit the type of the access network device. For example, a network device in a Universal Mobile Telecommunications System (UMTS) is called a Base Station (BS); a network device in a Long Term Evolution (LTE) system is called an evolved Node B (eNB); network devices in a Fifth generation mobile communication technology (5G) network are called a gNB, and the like, and are not listed here. Any network side device in a cellular mobile network that provides access service for a terminal can be understood as an access network device described in the present application.

The terminal described in the present application refers to a user equipment in a communication network. The terminal may be a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a Personal Digital Assistant (PDA), an electronic book, a mobile television, a wearable device, a Personal Computer (PC), and the like. In communication systems of different systems, terminals may be referred to differently.

The access method provided by the present application is applied to the wireless communication system architecture as shown in fig. 3. As shown in fig. 3, the wireless communication system architecture includes at least one access network device 301, and at least one terminal 302 accessing the network through the access network device 301. In the wireless communication system architecture illustrated in fig. 3, at least one access network device 301 provides access services to a terminal 302 through a radio frequency feed digital distribution system illustrated in fig. 1 or fig. 2.

It should be noted that fig. 3 is only a schematic illustration of the architecture of the wireless communication system by way of example. The number, types, etc. of the access network devices 301 and the terminals 302 included in the wireless communication system architecture may be configured according to actual requirements, and fig. 3 is not a specific limitation.

The cellular mobile network in the wireless communication system architecture shown in fig. 3 may be multiple networks in an LTE network, or a UMTS network, or a 5G network, or other networks. The embodiment of the present application is not particularly limited to the type of the network to which the scheme of the present application is applied.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present relevant concepts in a concrete fashion for ease of understanding.

Before describing the embodiments of the present application, the names in the present application are explained herein.

The transmission time refers to the length of time required for a signal to be transmitted in a network architecture.

The expected transmission time refers to the length of time required for a desired signal to be transmitted in a network architecture under certain requirements.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

In one aspect, an embodiment of the present application provides a terminal. Fig. 4 illustrates a terminal 40 associated with various embodiments of the present application. The terminal 40 may be the terminal 302 in the wireless communication system architecture shown in fig. 3. As shown in fig. 4, the terminal 40 may include: a processor 401, a memory 402, a transceiver 403.

The various components of the terminal 40 will now be described in detail with reference to fig. 4:

a memory 402, which may be a volatile memory (volatile memory), such as a random-access memory (RAM); or a non-volatile memory (non-volatile memory), such as a read-only memory (ROM), a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD); or a combination of the above types of memories, for storing program code, and configuration files, which implement the methods of the present application.

The processor 401 is a control center of the terminal 40, and may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application, for example: one or more microprocessors (digital signal processors, DSPs), or one or more Field Programmable Gate Arrays (FPGAs). The processor 401 may perform various functions of the terminal 40 by running or executing software programs and/or modules stored in the memory 402 and calling data stored in the memory 402.

The transceiver 403 is used for the terminal 40 to interact with other units. The transceiver 403 may be, for example, a transceiving antenna or a transceiving port of the terminal 40.

Specifically, the processor 401 executes or executes software programs and/or modules stored in the memory 402 and calls data stored in the memory 402 to perform the following functions:

sending an access signal to the access network device through the transceiver 403, where the GP length of the access signal is determined according to a preset expression of GP and the radius of the planned cell; the radius of the planned cell is greater than the expected transmission time multiplied by the speed of light; an access response is received from the access network device through transceiver 403.

In another aspect, an embodiment of the present application provides an access network device. Fig. 5 illustrates an access network apparatus 50 associated with various embodiments of the present application. The access network device 50 may be the access network device 301 in the wireless communication system architecture shown in fig. 3. As shown in fig. 5, the access network device 50 may include: a processor 501, a memory 502, and a transceiver 503.

The following describes each component of the access network device 50 in detail with reference to fig. 5:

memory 502, which may be a volatile memory (RAM); or a non-volatile memory (non-volatile memory) such as a ROM, a flash memory (flash memory), an HDD or an SSD; or a combination of the above types of memories, for storing program code, and configuration files, which implement the methods of the present application.

The processor 501 is a control center of the access network device 50, and may be a CPU, an ASIC, or one or more integrated circuits configured to implement the embodiments of the present application, for example: one or more DSPs, or one or more FPGAs. The processor 501 may perform various functions of the access network device 50 by executing or executing software programs and/or modules stored in the memory 502, as well as invoking data stored in the memory 502.

The transceiver 503 is used for the access network apparatus 50 to interact with other elements. Illustratively, the transceiver 503 may be a transceiving antenna or a transceiving port of the access network device 50.

Specifically, the processor 501 executes or executes the software programs and/or modules stored in the memory 502, and calls the data stored in the memory 502 to perform the following functions:

receiving an access signal from the terminal through the transceiver 503, where the GP length of the access signal is determined according to a preset expression of GP and a planned cell radius; the radius of the planned cell is greater than the expected transmission time multiplied by the speed of light; determining that the terminal is allowed to access according to the access signal, and generating an access response; an access response is sent to the terminal via the transceiver 503.

In another aspect, an access method provided in an embodiment of the present application is applied to an access process between a terminal 302 and an access network device 301 in a wireless communication system architecture shown in fig. 3, where the access method may be executed by the terminal or by a function module in the terminal, and this application is not specifically limited to this, and the following description is uniformly that the terminal executes a certain step, and the function module in the terminal may be replaced to execute a certain step, and subsequent contents are not described one by one. As shown in fig. 6, an access method provided in an embodiment of the present application may include:

s601, a terminal determines a random access lead code and constructs an access signal comprising the random access lead code, wherein the GP length of the protection time of the access signal is determined according to a preset expression of GP and the radius of a planning cell; the planned cell radius is larger than the expected transmission time multiplied by the speed of light.

Wherein the light speed is 3 × 10⁸M/s.

Specifically, the terminal may request access to the network by transmitting an access signal in various scenarios. These scenarios include, but are not limited to: initial access to the network, handover, Radio Resource Control (RRC) connection re-establishment, etc.

Specifically, in S601, when the terminal transmits the access signal, the terminal determines the content of the random access preamble and then constructs the access signal. The access signal includes a CP portion, a sequence portion, and a GP portion, the sequence portion being used to transmit the determined random access preamble.

When determining the random access preamble, the terminal may randomly select the random access preamble, or may calculate the random access preamble according to an algorithm, and the specific process may refer to a random access process, which is not described herein again.

In one possible implementation, the access signal includes a CP portion, a sequence portion, and a length of each of the GP portions, which may be specified by a communication protocol, and a guard time GP length of the access signal specified in the protocol is determined according to a preset expression of GP and a planned cell radius; the planned cell radius is larger than the expected transmission time multiplied by the speed of light.

In a possible implementation, the access signal includes a length of each of the CP portion, the sequence portion, and the GP portion, and may be determined by the access network device according to an actual scenario, that is, the access network device is configured to determine a guard time GP length of the access signal according to a preset expression of GP and a planned cell radius, where the planned cell radius is greater than an expected transmission time multiplied by an optical speed. The access network device then notifies the terminal of the determined guard time GP length of the access signal, and the notification process is not limited in the present application.

In one possible implementation, the access signal includes a CP portion, a sequence portion, and a length of each portion of a GP portion, and may be configured such that the terminal determines according to an actual scene, that is, when the terminal is configured to construct the access signal, a guard time GP length of the access signal is determined according to a preset expression of GP and a radius of a planned cell; the planned cell radius is larger than the expected transmission time multiplied by the speed of light.

Specifically, the access signal may also be referred to as an access preamble or a Random Access Channel (RACH) preamble, and the application does not specifically limit the type and name of the access signal. The access signal may include three parts of CP, sequence and GP. A random access preamble may be included in the sequence. The length of the CP is referred to herein as N_CPThe length of the sequence is referred to as N_seqThe length of GP is called N_GP。

Optionally, the random access preamble may be randomly selected by the terminal, or determined according to the configuration of the access network device, and the embodiment of the present application does not specifically limit the obtaining manner and the specific content of the random access preamble, which is not described herein again.

As is well known, the planned cell radius depends on the length of the GP, and both the CP length of the access signal and the length of the sequence may be configured according to actual requirements, which is not specifically limited in this application.

It should be noted that the preset expressions of the GP and the planned cell radius may be configured according to actual requirements, which is not specifically limited in the embodiment of the present application. For example, a preset expression of GP and planned cell radius may be obtained according to actual network configuration experience.

In a possible implementation, the preset expression of the GP and the radius of the planned cell may be: planned cell radius ═ N_GP-device transmit receive delay) × c/2. Where c is the speed of light and x is the multiplication.

In one possible implementation, the desired transmission time is greater than or equal to 30 us.

For example, the embodiments of the present application provide a design of a specific GP length, which may include: the expected transmission time is greater than or equal to 30us, and the GP length of the access signal is greater than 1844k multiplied by Ts; wherein, k is 64,

illustratively, according to the planned cell radius ═ (N)_GPDevice transmit-receive delay) c/2, when the GP length of the access signal is greater than 1844 kx Ts, the planned cell radius may cover more than 14 km, corresponding to an expected transmission time greater than 30 microseconds.

It should be noted that, in the embodiment of the present application, specific values of the GP length are not specifically limited. In practical application, the transmission time required by feeding radio frequency into the digital distribution system is taken as expected transmission time, the radius of a planned cell is obtained according to the fact that the radius of the planned cell is larger than the expected transmission time and multiplied by the light speed, and then the GP length of an access signal is obtained so as to configure the access signal. The access signals configured in this way are transmitted in the network, and the planned cell radius can be realized.

In one possible implementation, the CP length NCP of the access signal is NGP + Path Profile; wherein, the NGP is the length of the guard time GP, and the Path Profile is the preset multipath time.

The value of the Path Profile may be configured according to an actual scene, which is not specifically limited in the embodiment of the present application.

In one possible implementation, the sequence length of the access signal may be equal to n × 2048k, n being an integer greater than or equal to 1.

For example, the access method provided by the embodiment of the present application may be applied to a scenario where a network subcarrier interval is greater than 15KHz and there is no continuous 1ms uplink timing, where the network subcarrier interval provided by the access network device is greater than 15KHz and there is no continuous 1ms uplink timing in the scenario.

S602, the terminal sends an access signal to the access network equipment.

S603, the access network equipment receives the access signal from the terminal.

It should be noted that the access signal received by the access network device in S603, that is, the access signal sent by the terminal in S602, is already described in detail in S602, and is not described again here.

And S604, the access network equipment determines to allow the terminal to access the network according to the access signal.

Specifically, in S604, after receiving the access signal, the access network device determines to allow the terminal to access the network according to the content of the access signal, and the specific process may refer to the current random access process, which is not described herein again.

S605, the access network equipment sends an access response to the terminal.

The access network device determines to allow the terminal to access the network in S604, and sends an access response to the terminal in S605 to inform the terminal that the network can be accessed for communication. The name and type of the access response are not specifically limited in the embodiments of the present application.

Illustratively, the access response may be a Random Access Response (RAR).

And S606, the terminal receives an access response from the access network equipment.

The terminal receives the access response in S606, and completes the access process, so that the terminal can enter the access network communication process.

It should be noted that, in the drawings corresponding to the embodiments of the present application, only one possible sequence among the steps is illustrated, and the execution sequence of each step in the communication method provided in the embodiments of the present application is not specifically limited.

Further, when the access method provided in the embodiment of the present application is a contention based access method, as shown in fig. 7, after S606, the access method provided in the present application may further include S607 to S610 to complete conflict resolution in contention access.

S607, the terminal sends a connection establishment request to the access network equipment.

The connection establishment request may be an RRC connection request.

S608, the access network equipment receives the connection establishment request.

And S609, the access network equipment sends a connection establishment response to the terminal.

S610, the terminal receives a connection establishment response.

It should be noted that the processes from S607 to S610 may be implemented by the message 3(Msg3) and the message 4(Msg4) in the random access procedure defined in the random access procedure, and are not described herein again.

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 to be understood that the terminal and the access network device include hardware structures and/or software modules for performing the functions in order to implement the functions. The functional unit for implementing the access method in the terminal or the access network device is called an access device. Those of skill in the art would readily appreciate that the various illustrative elements 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 access device may be divided into the functional modules according to the method example, 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.

In the case of dividing each functional module by corresponding functions, fig. 8 shows a schematic diagram of a possible structure of the access device 80 deployed in the terminal involved in the above embodiment. The access device 80 may be the terminal itself or a functional module in the terminal. As shown in fig. 8, the access device 80 may include: a processing module 801, a sending module 802 and a receiving module 803. The processing module 801 is configured to execute the process S601 in fig. 6 or fig. 7; alternatively, the sending module 802 is configured to execute the processes S602 and S607 in fig. 6 or fig. 7; the receiving module 803 is configured to execute the processes S606 and S610 in fig. 6 or fig. 7. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

Fig. 9 shows a possible structural representation of the access device 90 according to the exemplary embodiment described above, in the case of an integrated unit. The access device 90 may include: a processing module 901 and a communication module 902. The processing module 901 is used for controlling and managing the operation of the access device 90. For example, the processing module 901 is configured to execute the procedure S601 in fig. 6 or fig. 7; the communication module 902 is configured to perform the processes S602, S606, S607, S610 in fig. 6 or fig. 7. The access device 90 may also include a storage module 903 for storing program codes and data for the access device 90.

The processing module 901 may be the processor 401 in the entity structure of the terminal 40 shown in fig. 4, and may be a processor or a controller. For example, it may be a CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor 901 may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication module 902 may be the transceiver 403 in the physical structure of the terminal 40 shown in fig. 4, and the communication module 902 may be a communication port, or may be a transceiver, a transceiver circuit, a communication interface, or the like. Alternatively, the communication interface may be configured to communicate with another device through the element having the transmission/reception function. The above-mentioned elements with transceiving functions may be implemented by antennas and/or radio frequency devices. The storage module 903 may be the memory 402 in the physical structure of the terminal 40 shown in fig. 4.

When the processing module 901 is a processor, the communication module 902 is a transceiver, and the storage module 903 is a memory, the access device 90 according to the embodiment of the present application shown in fig. 9 may be the terminal 40 shown in fig. 4.

As described above, the access device 80 or the access device 90 provided in the embodiments of the present application can be used to implement the functions of the terminal in the method implemented in the embodiments of the present application, and for convenience of description, only the portion related to the embodiments of the present application is shown, and details of the specific technology are not disclosed, please refer to the embodiments of the present application.

In the case of dividing each functional module by corresponding functions, fig. 10 shows a schematic diagram of a possible structure of the access device 100 deployed in the access network equipment in the above embodiment. The access device 100 may be an access network device itself, or may be a functional module in the access network device. As shown in fig. 10, the access device 100 may include: a processing module 1001, a sending module 1002 and a receiving module 1003. The processing module 1001 is configured to execute the process S604 in fig. 6 or fig. 7; or, the sending module 1002 is configured to execute the processes S605, S607, and S609 in fig. 6 or fig. 7; the receiving module 1003 is configured to execute the processes S603 and S608 in fig. 6 or fig. 7. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

Fig. 11 shows a schematic diagram of a possible structure of the access device 110 according to the above-described embodiment, in the case of an integrated unit. The access device 110 may include: processing module 1101, communication module 1102. The processing module 1101 is configured to control and manage the operation of the access device 110. For example, the processing module 1101 is configured to execute the process S604 in fig. 6 or fig. 7; the communication module 1102 is configured to execute the processes S603S605, S607, S608, and S609 in fig. 6 or fig. 7. The access device 110 may also include a storage module 1103 for storing program codes and data for the access device 110.

The processing module 1101 may be the processor 501 in the physical structure of the access network device 50 shown in fig. 5, and may be a processor or a controller. For example, it may be a CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor 1101 may also be a combination of computing functions, e.g., comprising one or more microprocessors, a combination of DSPs and microprocessors, or the like. The communication module 1102 may be the transceiver 503 in the physical structure of the access network device 50 shown in fig. 5, and the communication module 1102 may be a communication port, or may be a transceiver, a transceiver circuit, a communication interface, or the like. Alternatively, the communication interface may be configured to communicate with another device through the element having the transmission/reception function. The above-mentioned elements with transceiving functions may be implemented by antennas and/or radio frequency devices. The storage module 1103 may be a memory 502 in the physical structure of the access network device 50 shown in fig. 5.

When the processing module 1101 is a processor, the communication module 1102 is a transceiver, and the storage module 1103 is a memory, the access device 110 in fig. 11 according to the embodiment of the present application may be the access network apparatus 50 shown in fig. 5.

As described above, the access device 100 or the access device 110 provided in the embodiments of the present application may be used to implement the functions of the terminal in the method implemented in the embodiments of the present application, and for convenience of description, only the portion related to the embodiments of the present application is shown, and details of the specific technology are not disclosed, please refer to the embodiments of the present application.

As another form of the present embodiment, there is provided a computer-readable storage medium having stored thereon instructions that, when executed, perform the access method in the above-described method embodiment.

As another form of the present embodiment, there is provided a computer program product containing instructions that, when executed, perform the access method in the above-described method embodiment.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

Those skilled in the art will recognize that in one or more of the examples described above, the functions described herein may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer. It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric 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 achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. An access method, comprising:

a terminal sends an access signal to access network equipment, and the GP length of the protection time of the access signal is determined according to a preset expression of GP and the radius of a planned cell; the planned cell radius is greater than the expected transmission time multiplied by the speed of light;

the terminal receives an access response from the access network device.

2. The method of claim 1, wherein the expected transmission time is greater than or equal to 30 microseconds us.

3. The method according to claim 1 or 2, characterized in that the guard time GP length is greater than 1844 kxts; wherein k is 64, and

4. the method of any of claims 1-3, wherein the Cyclic Prefix (CP) length N of the access signal_CP＝N_GP+ Path Profile; wherein, the N is_GPAnd the Path Profile is the preset multipath time for the length of the guard time GP.

5. The method according to any of claims 1-4, wherein the sequence length of the access signal is equal to n x 2048 k; wherein k is 64 and n is an integer greater than or equal to 1.

6. The method of any of claims 1-5, wherein the network subcarrier spacing provided by the access network device is greater than 15 kilohertz (kHz) without continuous 1 millisecond (ms) upstream timing.

7. An access device, comprising:

a processing module for determining a random access preamble and constructing an access signal comprising the random access preamble; the length of the protection time GP of the access signal is determined according to a preset expression of the CP and the radius of a planning cell; the planned cell radius is greater than the expected transmission time multiplied by the speed of light;

a sending module, configured to send the access signal to an access network device;

a receiving module, configured to receive an access response from the access network device.

8. The apparatus of claim 7, wherein the expected transmission time is greater than or equal to 30 microseconds us.

9. The apparatus according to claim 7 or 8, wherein the guard time GP is longer than 1844 kxts; wherein k is 64, and

10. the apparatus of any of claims 7-9, wherein a Cyclic Prefix (CP) length N of the access signal_CP＝N_GP+ Path Profile; wherein, the N is_GPFor the length of the guard time GP, the PathProfile is a preset multipath time.

11. The apparatus according to any of claims 7-10, wherein the sequence length of the access signal is equal to n x 2048 k; wherein k is 64 and n is an integer greater than or equal to 1.

12. The apparatus of any of claims 7-11, wherein the network subcarrier spacing provided by the access network device is greater than 15 kilohertz KHz without continuous 1 millisecond uplink timing.

13. An access device comprising a memory, a processor and a program stored on the memory and executable on the processor, wherein the processor implements the access method of any one of claims 1-6 when executing the program.

14. A terminal, characterized in that it comprises an access device according to any one of claims 7-13.

15. An access system comprising the terminal of claim 14 and an access network device.

16. A computer-readable storage medium comprising computer program instructions which, when run on a computer, cause the computer to perform the access method of any one of claims 1-6.