CN115734347A

CN115734347A - Method and device for random access, terminal and network equipment

Info

Publication number: CN115734347A
Application number: CN202111008362.1A
Authority: CN
Inventors: 周欢
Original assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Current assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2023-03-03

Abstract

The application discloses a method and a device for random access, a terminal and network equipment; the method comprises the following steps: a terminal acquires a signal detection result of each resource in discontinuous frequency domain resources; the network equipment configures a first threshold, wherein the first threshold is a signal detection result threshold used for selecting resources in discontinuous frequency domain resources for random access; if the signal detection result of the first resource in the discontinuous frequency domain resources is larger than the first threshold, the terminal determines the first resource as the resource for random access, so that the terminal can determine/select which resource is used for random access according to the magnitude relation between the signal detection result of each resource in the discontinuous frequency domain resources and the first threshold by introducing the first threshold, the possibility of determining or selecting the resource for random access from the discontinuous frequency domain resources is realized by configuring the first threshold, and the robustness and the stability of system communication are ensured.

Description

Method and device for random access, terminal and network equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for random access, a terminal, and a network device.

Background

The standard protocol established by the third generation partnership project (3 rd generation partnership project,3 gpp) has been studied with respect to the configuration of frequency domain resources for a cell. The frequency domain resources of the cells configured by the network are all continuous Resource Blocks (RBs).

With the continuous evolution of standard protocols established by 3GPP and the continuous complication of communication scenarios, there may be discontinuous frequency domain resources in a cell. However, how to select or determine resources for random access on non-contiguous frequency domain resources requires further research.

Disclosure of Invention

The application provides a method and a device for random access, a terminal and network equipment, which are used for the purpose that the terminal can determine/select which resource is used for random access according to the magnitude relation between the signal detection result of each resource in non-continuous frequency domain resources and a first threshold by introducing the first threshold, so that the possibility of determining or selecting the resource for random access from the non-continuous frequency domain resources is realized by configuring the first threshold, and the robustness and the stability of system communication are ensured.

In a first aspect, a method for random access in an embodiment of the present application includes:

a terminal acquires a signal detection result of each resource in discontinuous frequency domain resources;

and if the signal detection result of the first resource in the discontinuous frequency domain resources is larger than a first threshold, the terminal determines the first resource as the resource for the random access.

In a second aspect, a method for random access in an embodiment of the present application includes:

the network device configures a first threshold, where the first threshold is a signal detection result threshold used for selecting resources in discontinuous frequency domain resources for the random access.

It can be seen that, in the embodiment of the application, in the cell in which the terminal supports the discontinuous frequency domain resource, since the network device may configure the terminal with a first threshold, where the first threshold is a threshold of a signal detection result used for selecting a resource in the discontinuous frequency domain resource for the random access, the terminal may determine or select which resource is used for the random access according to a magnitude relationship between the signal detection result of each resource in the discontinuous frequency domain resource and the first threshold, when obtaining the signal detection result of each resource in the discontinuous frequency domain resource. If the signal detection result of the first resource in the discontinuous frequency domain resources is greater than the first threshold, the terminal can determine the first resource as the resource for random access, so that the possibility of determining or selecting the resource for random access from the discontinuous frequency domain resources is realized by configuring the first threshold, and the robustness and the stability of system communication are ensured.

In a third aspect, an apparatus for random access in an embodiment of the present application includes a processing unit and a communication unit, where the processing unit is configured to:

acquiring a signal detection result of each resource in the discontinuous frequency domain resources through the communication unit;

and if the signal detection result of the first resource in the discontinuous frequency domain resources is greater than a first threshold, the terminal determines the first resource as the resource for the random access.

In a fourth aspect, an apparatus for random access in an embodiment of the present application includes a processing unit and a communication unit, where the processing unit is configured to:

configuring, by the communication unit, a first threshold, where the first threshold is a signal detection result threshold used for selecting resources in discontinuous frequency domain resources for the random access.

In a fifth aspect, the terminal according to the embodiment of the present application includes a processor, a memory, a communication interface, and at least one program, where the at least one program is stored in the memory, and the processor executes the at least one program, so that the terminal performs the method described in the first aspect.

A sixth aspect is a network device according to an embodiment of the present application, and includes a processor, a memory, a communication interface, and at least one program, where the at least one program is stored in the memory, and the processor, when executing the at least one program, causes the network device to perform the method described in the second aspect.

In a seventh aspect, the present invention is a computer-readable storage medium of an embodiment of the present application, where the computer-readable storage medium stores a computer program or instructions, and the computer program or instructions, when executed by a processor, implement the steps described in the first aspect or the second aspect.

An eighth aspect is a computer program product of the present application, comprising computer programs or instructions, wherein the computer programs or instructions, when executed by a processor, implement the steps described in the first or second aspect above. By way of example, the computer program or instructions may be a software installation package.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly described below.

Fig. 1 is an architecture diagram of a wireless communication system according to an embodiment of the present application;

fig. 2 is a schematic flowchart of a contention-based 4-step random access according to an embodiment of the present application;

fig. 3 is a schematic flowchart of 2-step contention-based random access according to an embodiment of the present application;

fig. 4 is a flowchart illustrating a method for random access according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a discontinuous frequency domain resource in a cell according to an embodiment of the present application;

FIG. 6 is a schematic diagram illustrating a structure of non-contiguous frequency-domain resources in a cell according to yet another embodiment of the present application

FIG. 7 is a schematic diagram illustrating a structure of non-contiguous frequency-domain resources in a cell according to yet another embodiment of the present application

Fig. 8 is a block diagram of functional units of an apparatus for random access according to an embodiment of the present disclosure;

fig. 9 is a block diagram of functional units of another apparatus for random access according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a terminal according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

In order to better understand the technical solutions of the present application for those skilled in the art, the technical solutions in the embodiments of the present application are described below with reference to the drawings in the embodiments of the present application. It should be apparent that the embodiments described are some, but not all embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art without making any creative effort for the embodiments in the present application belong to the protection scope of the present application.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, software, product, or apparatus that comprises a list of steps or elements is not limited to those listed but may include other steps or elements not listed or inherent to such process, method, product, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

It should be noted that "connection" in the embodiments of the present application refers to various connection methods such as direct connection or indirect connection, so as to implement communication between devices, and is not limited in any way. In the embodiments of the present application, "network" and "system" represent the same concept, and a communication system is a communication network.

The technical solution of the embodiment of the present application can be applied to various wireless communication systems, for example: global System for Mobile communications (GSM) System, code Division Multiple Access (CDMA) System, wideband Code Division Multiple Access (WCDMA) System, general Packet Radio Service (GPRS), long Term Evolution (Long Term Evolution, LTE) System, advanced Long Term Evolution (LTE-a) System, new Radio (NR) System, evolution System of NR System, LTE-based Access to Unlicensed Spectrum, LTE-U) System, NR-based Access to Unlicensed Spectrum (NR-U) System, non-Terrestrial communication network (NTN) System, universal Mobile Telecommunications System (UMTS), wireless Local Area Network (WLAN), wireless Fidelity (WiFi), 6th-Generation (6G) communication System, or other communication systems.

It should be noted that the conventional wireless communication system has a limited number of supported connections and is easy to implement. However, with the development of communication technology, the wireless communication system may support not only a conventional wireless communication system, but also devices to devices (D2D) communication, machine to machine (M2M) communication, machine Type Communication (MTC), vehicle to vehicle (V2V) communication, vehicle to vehicle (V2X) communication, narrowband internet of things (NB-IoT) communication, etc., so that the technical solution of the embodiments of the present application may also be applied to the above wireless communication system.

Optionally, the wireless communication system according to the embodiment of the present application may be applied to beamforming (beamforming), carrier Aggregation (CA), dual Connectivity (DC), or Standalone (SA) deployment scenarios, etc.

Optionally, the wireless communication system of the embodiment of the present application may be applied to an unlicensed spectrum. The unlicensed spectrum may also be referred to as a shared spectrum. Alternatively, the wireless communication system in the embodiment of the present application may also be applied to licensed spectrum. The licensed spectrum may also be considered as an unshared spectrum.

The embodiments of the present application are described in conjunction with a terminal and a network device, and the terminal and the network device are specifically described below.

Specifically, the terminal may be a User Equipment (UE), a remote terminal (remote UE), a relay UE, an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote station, a mobile device, a user terminal, a smart terminal, a wireless communication device, a user agent, or a user equipment. It should be noted that the relay device is a terminal capable of providing a relay forwarding service for other terminals (including a remote terminal). In addition, the terminal may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal in a next generation communication system (e.g., NR communication system, 6G communication system), or a terminal in a future evolved Public Land Mobile Network (PLMN), and the like, which are not particularly limited.

Further, the terminal can be deployed on land, including indoors or outdoors, hand-held, worn, or vehicle-mounted; can be deployed on the water surface (such as a ship and the like); may be deployed in the air (e.g., airplanes, balloons, satellites, etc.).

Further, the terminal 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 device in industrial control (industrial control), a wireless terminal device in unmanned autonomous driving, a wireless terminal device in remote medical treatment (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), or the like.

Specifically, the network device may be a device for communicating with the terminal, and is responsible for Radio Resource Management (RRM), quality of service (QoS) management, data compression and encryption, data transmission and reception, and the like on the air interface side. The network device may be a Base Station (BS) in a communication system or a device deployed in a Radio Access Network (RAN) for providing a wireless communication function. For example, the base station (BTS) in the GSM or CDMA communication system, the Node B (NB) in the WCDMA communication system, the evolved node B (eNB or eNodeB) in the LTE communication system, the next evolved node B (ng-eNB) in the NR communication system, the next evolved node B (gNB) in the NR communication system, the Master Node (MN) in the dual link architecture, the second node or Secondary Node (SN) in the dual link architecture, etc., which are not particularly limited.

Further, the network device may also be other devices in a Core Network (CN), such as an access and mobility management function (AMF), a User Plan Function (UPF), and the like; but also may be an Access Point (AP) in a Wireless Local Area Network (WLAN), a relay station, a communication device in a PLMN network for future evolution, a communication device in an NTN network, and so on.

Further, the network device may include means, such as a system-on-chip, having a function of providing wireless communication for the terminal. Illustratively, the chip system may include a chip and may also include other discrete devices.

Further, the network device may communicate with an Internet Protocol (IP) network. Such as the internet, a private IP network or other data network, etc.

It should be noted that in some network deployments, the network device may be a stand-alone node to implement all functions of the base station, which may include a Centralized Unit (CU) and a Distributed Unit (DU), such as a gNB-CU and a gNB-DU; an Active Antenna Unit (AAU) may also be included. The CUs may implement part of the functions of the network device, and the DUs may also implement part of the functions of the network device. For example, the CU is responsible for processing non-real-time protocols and services, and implements functions of a Radio Resource Control (RRC) layer, a Service Data Adaptation (SDAP) layer, and a Packet Data Convergence (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. In addition, the AAU may implement portions of 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 RRC layer signaling) can be considered to be sent by the DU or jointly sent by the DU and the AAU under the network deployment. It is to be understood that the network device may comprise at least one of a CU, a DU, an AAU. In addition, the CU may be divided into network devices in an access network (RAN), or the CU may be divided into network devices in a core network, which is not specifically limited.

Further, the network device may have mobile characteristics, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a Medium Earth Orbit (MEO) satellite, a geosynchronous orbit (GEO) satellite, a High Elliptic Orbit (HEO) satellite, and the like. Alternatively, the network device may be a base station installed on land, water, or the like.

Further, the network device may serve a cell, and terminals within the cell may communicate with the network device via transmission resources (e.g., spectrum resources). The cell may include a macro cell (macrocell), a small cell (small cell), a metro cell (metro cell), a micro cell (micro cell), a pico cell (pico cell), a femto cell (femto cell), and the like.

In conjunction with the above description, an exemplary description is provided below of a wireless communication system according to an embodiment of the present application.

For an exemplary wireless communication system according to an embodiment of the present application, please refer to fig. 1. The wireless communication system 10 may include a network device 110 and a terminal 120, and the network device 110 may be a device that performs communication with the terminal 120. Meanwhile, the network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals 120 located within the coverage area.

Optionally, the wireless communication system 10 may further include a plurality of network devices, and each network device may include a certain number of terminals within a coverage area thereof, which is not limited in this embodiment.

Optionally, the wireless communication system 10 may further include other network entities such as a network controller, a mobility management entity, etc., which are not limited in this regard.

Alternatively, the communication between the network device and the terminal in the wireless communication system 10, and the communication between the terminal and the terminal may be wireless communication or wired communication, and is not particularly limited herein.

First, the related contents related to the technical solutions of the embodiments of the present application are introduced to facilitate understanding by those skilled in the art.

1. 4-step random access process based on competition

As shown in fig. 2, for 4-step contention-based random access, the whole process includes 4 steps: random access preamble (RAR) message reception, message 3 (Msg 3) transmission, and message 4 (Msg 4) reception.

Step one, random access lead code transmission

The random access preamble, i.e. message 1 (Msg 1), is mainly used to inform the network device that there is a random access request, and at the same time, the base station can estimate the transmission delay between the base station and the UE and calibrate the uplink timing according to the estimated transmission delay, and indicate the UE to the random access response message

Step two, receiving the random access response message

The RAR, i.e., the message 2 (Msg 2), is transmitted through a resource location indicated by a random access radio network temporary identifier (RA-RNTI) scrambled PDCCH, and a time-frequency location of the random access preamble determines a value of the RA-RNTI. After the terminal sends the random access preamble, the terminal monitors the corresponding PDCCH according to the value of the RA-RNTI within the RAR time window to receive the RAR corresponding to the RA-RNTI. And if the RAR sent by the network equipment is not received in the RAR time window, the random access process is considered to fail.

The RAR may include a time adjustment amount required for specifying uplink synchronization, an uplink resource for the UE to transmit the message 3, a temporary C-RNTI, and the like.

In addition, since the terminal may randomly select one preamble for random access, there may be a case where multiple terminals simultaneously select the same PRACH (physical random access channel) resource and the same preamble, thereby causing a collision, that is, it is not possible to determine to which terminal the RAR responds when using the same RA-RNTI and preamble, and a collision resolution mechanism is required to resolve the collision problem at this time.

Step three, message 3 transmission

Msg3 is transmitted on UL-SCH (uplink shared channel), and Msg3 needs to contain an important message: a unique identity for each terminal. This flag may be used for conflict resolution in step four. For a terminal in an RRC _ CONNECTED state, the only mark is C-RNTI; for terminals in the non-RRC _ CONNECTED state, a unique terminal identity (S-TMSI or a random number) from the core network will be used as its identity.

Step four, receiving the message 4

The terminal has a unique mark carrying itself at Msg 3: C-RNTI or a terminal identity from the core network. The network device will carry the unique flag in Msg4 to indicate the winning terminal in the collision resolution mechanism, and other terminals that are not winning in collision resolution will re-initiate random access. If the PDCCH received by the terminal in Msg4 is scrambled by TC-RNTI specified in RAR, when the UE context Resolution Identity MAC control element contained in the MAC PDU successfully decoded is matched with the CCCH SDU sent by Msg3, the terminal considers that random access is successful and sets the TC-RNTI thereof as C-RNTI.

2. 2-step random access process based on competition

In the R16 release, in order to reduce the terminal access delay, a 2-step contention-based random access procedure is introduced.

As shown in fig. 3, for 2-step contention-based random access, the whole process mainly includes the following two steps:

step one, a terminal transmits a random access preamble and a message 3 in the 4-step random access process based on competition, wherein the message is called MsgA;

and step two, the terminal receives the message 2 and the message 4 in the 4-step random access process based on the competition, which are called MsgB.

The method for random access according to the embodiments of the present application is described in detail below with reference to the accompanying drawings.

As shown in fig. 4, a schematic flow chart of a method for random access according to an embodiment of the present application is shown, which specifically includes the following steps:

s410, the terminal obtains the signal detection result of each resource in the discontinuous frequency domain resources.

S420, if the signal detection result of the first resource in the discontinuous frequency domain resources is larger than a first threshold, the terminal determines the first resource as the resource for random access.

Correspondingly, the network device configures a first threshold, where the first threshold is a signal detection result threshold used for selecting resources in the discontinuous frequency domain resources for random access.

For determining the first resource as the resource for random access, it can be understood that the first resource is used as the resource for random access, so that the terminal can perform random access on the first resource.

In some embodiments, the random access may include a 2-random access type random access and/or a 4-step random access type random access.

In some embodiments, the random access may be for initial access of a cell.

In some embodiments, the first threshold may be carried by at least one of a Master Information Block (MIB), a System Information Block (SIB), cell-common high layer signaling (cell-common high layer signaling), and terminal-specific high layer signaling (UE-specific high layer signaling). It can be understood that, in the present application, the first threshold may be configured to the terminal through MIB, SIB, cell common higher layer signaling, terminal specific higher layer signaling, and the like.

It should be noted that, with the continuous evolution of the standard protocol established by the 3GPP and the continuous complication of the communication scenario, there may be discontinuous frequency domain resources in the cell. Therefore, in order to implement random access, resources for random access need to be determined or selected on non-contiguous frequency domain resources.

Based on this, in the embodiment of the present application, in the cell in which the terminal supports the discontinuous frequency domain resource, since the network device may configure the terminal with a first threshold, where the first threshold is a threshold for a signal detection result of selecting a resource in the discontinuous frequency domain resource for random access, the terminal may determine which resource is used for random access according to a magnitude relationship between the signal detection result of each resource in the discontinuous frequency domain resource and the first threshold, when obtaining the signal detection result of each resource in the discontinuous frequency domain resource. If the signal detection result of the first resource in the discontinuous frequency domain resources is greater than the first threshold, the terminal can determine the first resource as the resource for random access, so that the possibility of determining or selecting the resource for random access from the discontinuous frequency domain resources is realized by configuring the first threshold, and the robustness and the stability of system communication are ensured.

In combination with the above description, the following embodiments of the present application specifically illustrate the concept or technical solution involved in the above method.

1. Non-contiguous frequency domain resources

For the non-contiguous frequency domain resources, the non-contiguous frequency domain resources in the same cell may be used. That is, each resource in the non-contiguous frequency domain resources may belong to the same cell.

It can be understood that the network device configures the frequency domain resources in a certain cell to be non-contiguous, and specifically, the network device may determine whether the frequency domain resources configured to the cell are non-contiguous. The resources in the discontinuous frequency domain resources may include multiple carriers or multiple bandwidth parts, which is specifically described as follows:

1) The resources among the non-contiguous frequency domain resources within the same cell may include a plurality of carriers (carriers).

It should be noted that the frequency domain resources between two adjacent carriers in the multiple carriers may be discontinuous, and the frequency domain resources within each carrier may be continuous or discontinuous.

For the frequency domain resources between two adjacent carriers to be non-continuous, it can be understood that, under the same subcarrier spacing (or the same parameter set numbering), two adjacent carriers are non-overlapping in the frequency domain, or there is a frequency spacing between the frequency domain resources of two adjacent carriers.

For example, referring to fig. 5, a network device is configured with 4 carriers, i.e., a carrier 501, a carrier 502, a carrier 503, and a carrier 504, for a certain cell. The frequency domain resources between two adjacent carriers are discontinuous, and the frequency domain resources of each carrier are continuous, so that the frequency domain resources in the same cell configured to the terminal are discontinuous.

2) Resources among the discontinuous frequency domain resources within the same cell may include a plurality of bandwidth parts (BWPs).

It should be noted that the frequency domain resources between two adjacent BWPs in the plurality of BWPs may be discontinuous, and the frequency domain resources in each BWP may be continuous.

For the frequency domain resources between two adjacent BWPs are non-continuous, it can be understood that, at the same subcarrier spacing (or the same parameter set numerology), two adjacent BWPs are non-overlapping in the frequency domain, or there is a frequency spacing between the frequency domain resources of two adjacent BWPs.

In addition, the BWPs in the multiple BWPs may be in the same carrier, or in different carriers, and the different carriers belong to the same cell.

For example, please refer to fig. 6, taking BWP in the same carrier as an example. The network device is configured with 1 carrier, i.e. carrier 610, for a certain cell, and carrier 610 includes four bandwidth portions, i.e. BWP6101, BWP 6102, BWP 6103 and BWP 6104, while the frequency domain resources between two adjacent BWPs are non-continuous, and the frequency domain resources of each BWP are continuous, so that the frequency domain resources in the same cell configured to the terminal are non-continuous.

For example, please refer to fig. 7, which illustrates BWP being in different carriers. The network device is configured with 3 carriers, i.e., carrier 710, carrier 720, and carrier 730, for a certain cell, and the frequency domain resource of carrier 730 is discontinuous. The carrier 710 includes two BWPs, that is, BWP 7101 and BWP 7102, frequency domain resources between two adjacent BWPs are discontinuous, and frequency domain resources of each BWP are continuous, so that the configured frequency domain resources of the carrier 710 are discontinuous.

Similarly, the carrier 720 includes three bandwidth portions, that is, BWPs 7201, BWPs 7202 and BWPs 7203, the frequency domain resources between two adjacent BWPs are discontinuous, and the frequency domain resources of each BWP are continuous, so that the configured frequency domain resources of the carrier 720 are discontinuous.

In addition, the frequency domain resources between BWP 7102 in carrier 710 and BWP 7201 in carrier 720 are non-contiguous. In short, the frequency domain resources in the same cell configured to the terminal through the carrier 710, the carrier 720, and the carrier 730 are discontinuous.

To sum up, the terminal of the embodiment of the present application may support a cell of discontinuous frequency domain resources, and resources in the discontinuous frequency domain resources may include multiple carriers or multiple bandwidth parts; the frequency domain resources between two adjacent carriers may be discontinuous, or the frequency domain resources between two adjacent bandwidth parts may be discontinuous.

Therefore, the first resource of the embodiment of the present application may be one carrier or one BWP.

2. And (3) signal detection results:

in the processes of downlink synchronization, cell camping, cell searching, and the like, the terminal may monitor a Physical Downlink Control Channel (PDCCH) to acquire paging downlink control information (paging DCI). Wherein the paging DCI includes at least one of transmission information indicating whether at least one reference signal resource (RS resource) or reference signal resource set (RS resource set) is transmitted, information of resources (e.g., multiple carriers or multiple BWPs) in the non-contiguous frequency domain resources associated with each RS resource or RS resource set, and information of RS resources indicating respective resources (e.g., each carrier or each BWP) in the non-contiguous frequency domain resources.

Therefore, the terminal may know the RS resource of each resource (e.g., each carrier or each BWP) in the non-contiguous frequency domain resources through the paging DCI, and receive the downlink RS on the RS resource of each resource. Finally, the terminal performs channel estimation/measurement/detection according to the downlink RS to obtain a signal detection result of each resource (e.g., each carrier or each BWP).

It can be understood that the signal detection result of the embodiment of the present application may be obtained by the terminal performing channel estimation/measurement/detection according to the downlink RS, and the resource carrying the downlink RS may be indicated by the paging DCI, and the resource carrying the downlink RS has an association relationship with a resource (such as each carrier or each BWP) in the discontinuous frequency domain resource in the same cell.

In some embodiments, the signal detection result may include at least one of a channel quality measurement parameter (such as signal to interference plus noise ratio, SINR), a Reference Signal Receiving Power (RSRP), a Reference Signal Receiving Quality (RSRQ), and a Received Signal Strength Indication (RSSI).

For example, in fig. 5, taking the signal detection result as RSRP as an example, the terminal obtains the RS resources of the carrier 501, the carrier 502, the carrier 503, and the carrier 504 by monitoring the paging DCI, so as to receive the downlink RS on the RS resources of each carrier to perform channel estimation on each carrier, and obtain the RSRP of the carrier 501, the RSRP of the carrier 502, the RSRP of the carrier 503, and the RSRP of the carrier 504.

In some embodiments, the cell may include one of a primary cell (PCell), a secondary cell (SCell), and a primary secondary cell (PSCell). It can be understood that, in the embodiments of the present application, a terminal may be configured with a primary cell, a secondary cell, or non-contiguous frequency domain resources in the primary and secondary cells through Carrier Aggregation (CA) or dual link (DC).

In some embodiments, the downlink RS may include at least one of a phase-tracking reference signal (PT-RS), a demodulation reference signal (DM-RS), and a channel state information reference signal (CSI-RS).

A specific implementation manner in which the terminal selects/determines the resource for random access from the non-continuous frequency domain resource according to the magnitude relationship between the signal detection result of each resource in the non-continuous frequency domain resource and the first threshold is described below.

1. Case where resources in the non-contiguous frequency domain resources include multiple carriers

When the network device configures a plurality of carriers in the same cell to the terminal, and performs channel estimation on the plurality of carriers through the downlink RS to obtain a signal detection result of each carrier, the terminal can select one carrier for random access from the plurality of carriers according to a magnitude relation between the signal detection result of each carrier and the first threshold, thereby implementing random access on non-continuous frequency domain resources and ensuring robustness and stability of system communication.

In some embodiments, the terminal may determine which carrier may be a resource for random access according to whether the signal detection result of each carrier exceeds/is greater than a first threshold.

Since there may be a situation where the signal detection result of some or some of the multiple carriers is greater than the first threshold, the following description is divided into cases.

The first situation is as follows:

specifically, if only one carrier (for example, a first resource) exists in the resources in the discontinuous frequency domain resource, and the signal detection result of the carrier exceeds/is greater than a first threshold, the terminal determines that the carrier is a resource for random access.

For example, in fig. 5, taking the RSRP as the signal detection result and the RSRP threshold as the first threshold, the terminal compares the RSRP of the carrier 501, the RSRP of the carrier 503, and the RSRP of the carrier 504 with the RSRP threshold. When only the RSRP of the carrier 501 exceeds/is greater than the RSRP threshold, the terminal will choose to perform random access on the carrier 501.

Case two:

specifically, if at least two carriers (e.g., multiple resources) exist in the resources in the discontinuous frequency domain resource, and the signal detection result of each carrier in the at least two carriers exceeds/is greater than the first threshold, the terminal needs to select/determine one carrier (e.g., the first resource) from the at least two carriers as the resource for random access.

For example, in fig. 5, taking the RSRP as the signal detection result and the RSRP threshold as the first threshold, the terminal compares the RSRP on the carrier 501, the RSRP on the carrier 503, and the RSRP on the carrier 504 with the RSRP threshold. When both RSRP on carrier 501 and RSRP on carrier 502 exceed the RSRP threshold, the terminal needs to select a carrier from carriers 501 and 502 for random access.

For how to select/determine one carrier (e.g., a first resource) among the at least two carriers (e.g., a plurality of resources) as a resource for random access, the following manner may be adopted in the embodiments of the present application:

1) Selecting according to the principle that the channel detection result is strongest;

it is understood that the terminal selects the carrier of the strongest signal detection result from the at least two carriers as the resource for random access, i.e. the first resource is the resource of the strongest signal detection result in the plurality of resources.

2) Selecting according to a carrier index (index) minimum/minimum principle;

it is to be understood that the terminal selects the lowest indexed carrier from the at least two carriers as the resource for random access, i.e. the first resource is the lowest indexed resource of the plurality of resources.

3) Selecting according to a random selection principle;

it is to be understood that the terminal randomly selects one carrier from the at least two carriers as a resource for random access, i.e. the first resource is a randomly selected resource of the plurality of resources.

4) Selecting according to a terminal capability principle;

it is understood that the terminal selects one carrier from the carriers according to its own capability as the resource for random access, i.e. the first resource is a resource selected according to the terminal capability from the plurality of resources.

In addition, the terminal capabilities may include remaining power, antenna transceiving capabilities, communication capabilities, signal modulation and demodulation capabilities, signal coding and decoding capabilities, and the like.

2. Case where resources in the discontinuous frequency domain resources include a plurality of BWPs

When the network device configures a plurality of BWPs in the same cell to the terminal and performs channel estimation on the BWPs through the downlink RS to obtain a signal detection result of each BWP, the terminal may select a BWP for random access from the BWPs according to a size relationship between the signal detection result of each BWP and the first threshold, thereby implementing random access on the discontinuous frequency domain resource and ensuring robustness and stability of system communication.

In some embodiments, the terminal may determine which BWP may be used as a resource for random access according to whether the signal detection result on each BWP exceeds/is greater than a first threshold.

Since there may be situations in which the signal detection result on a certain BWP exceeds/is greater than the first threshold in a plurality of BWPs, the following description is divided into cases.

Case 1:

specifically, if there is only one BWP (e.g., the first resource) in the resource in the discontinuous frequency domain resource and the detection result of the signal on the BWP exceeds/is greater than the first threshold, the terminal determines the BWP as the resource for random access.

For example, in fig. 6, taking the signal detection result as RSRP and the first threshold as RSRP threshold as an example, the terminal compares RSRP on BWP6101, RSRP on BWP 6102, RSRP on BWP 6103, and RSRP on BWP 6104 with the RSRP threshold. When RSRP on BWP6101 only exists beyond the RSRP threshold, the terminal will choose to perform random access on BWP 6101.

Case 2:

specifically, if at least two BWPs (e.g., multiple resources) exist in the resources in the discontinuous frequency domain resource, and the signal detection result of each BWP in the at least two BWPs exceeds/is greater than the first threshold, the terminal needs to select/determine one BWP (e.g., the first resource) from the at least two BWPs as the resource for random access.

For example, in fig. 6, taking the signal detection result as RSRP and the first threshold as RSRP threshold as an example, the terminal compares RSRP on BWP6101, RSRP on BWP 6102, RSRP on BWP 6103, and RSRP on BWP 6104 with the RSRP threshold. When both RSRP on BWP6101 and RSRP on BWP 6102 exceed the RSRP threshold, the terminal needs to select a BWP in BWP6101 and BWP 6102 for random access.

For how to select/determine one BWP (e.g., a first resource) among the at least two BWPs (e.g., multiple resources) as a resource for random access, the embodiment of the present application may adopt the following manners:

it is understood that the terminal selects the BWP of the strongest signal detection result from the at least two BWPs as a resource for random access.

2) Selecting according to a carrier index (index) minimum/minimum principle;

it is understood that the terminal selects a BWP of the lowest index from the at least two BWPs as a frequency domain resource for random access.

3) Selecting according to a random selection principle;

it is to be understood that the terminal randomly selects one BWP from the at least two BWPs as a frequency domain resource for random access.

4) Selecting according to a terminal capability principle;

it is to be understood that the terminal selects one BWP from the at least two BWPs according to its own capability as a frequency domain resource for random access.

In the foregoing manner, the embodiment of the present application introduces how to select/determine resources for random access from non-contiguous frequency domain resources. However, in the case of configuring the random access of the 2-step random access type and the random access of the 4-step random access type, the random access in the embodiment of the present application may include the random access of the 2-step random access type and/or the random access of the 4-step random access type, and therefore the terminal needs to further determine whether to perform the random access on the selected resource (e.g., the first resource) by using the 2-step random access type or the 4-step random access type.

Based on this, the network device needs to configure a threshold for each resource (e.g., each carrier or each BWP) in the non-continuous frequency domain resources through the MIB, SIB, cell common higher layer signaling, terminal dedicated higher layer signaling, etc., where the threshold is a signal detection result threshold for selecting the 2-step random access type and the 4-step random access type, so as to facilitate the possibility of selecting the 2-step random access type or the 4-step random access type for random access on the selected frequency domain resource (e.g., carrier or BWP) through the threshold.

In addition, one of the thresholds configured for each resource (e.g., each carrier or each BWP) in the non-contiguous frequency domain resource may be the same value or different values, which is not limited in particular.

In some embodiments, the network device of the embodiment of the present application may configure a second threshold for each carrier or BWP, where the second threshold is a signal detection result threshold used for selecting between a 2-step random access type and a 4-step random access type.

It should be noted that the network device may configure a signal detection result threshold (i.e., a first threshold) for selecting a carrier or BWP for random access, and configure a signal detection result threshold (i.e., a second threshold) for selecting a 2-step random access type and a 4-step random access type for each carrier or BWP.

In addition, although the first threshold may be an RSRP threshold and the second threshold may also be an RSRP threshold, the two RSRP thresholds have different functions. An RSRP threshold is used to select a carrier or a BWP in the discontinuous frequency domain resource in the same cell for random access, and the network device only needs to configure one RSRP threshold; in the case that resources in the non-continuous frequency domain resources are configured with resources of a 2-step random access type and a 4-step random access type at the same time, another RSRP threshold is used for selecting the 2-step random access type and the 4-step random access type, and the network device needs to configure one RSRP threshold for each resource (such as each carrier or each BWP) in the non-continuous frequency domain resources.

For example, in fig. 5, taking the signal detection result as RSRP as an example, the network device configures an RSRP threshold, that is, a threshold 1, a RSRP threshold, that is, a threshold 2, for a carrier 501, a RSRP threshold, that is, a threshold 3, for a carrier 502, a RSRP threshold, that is, a threshold 4, and a RSRP threshold, that is, a threshold 5, for a carrier 504 through MIB, SIB, cell common higher layer signaling, terminal dedicated higher layer signaling, and the like. The threshold 2, the threshold 3, the threshold 4, and the threshold 5 may be the same value or different values.

In order to implement random access by selecting a 2-step random access type or a 4-step random access type on the first resource according to the second threshold, in this embodiment of the present application, the terminal may be determined according to a magnitude relationship between the second threshold and a signal detection result of the first resource.

In addition, the magnitude relationship between the second threshold and the signal detection result of the first resource may include that the second threshold exceeds (is greater than) the signal detection result of the first resource, and that the second threshold does not exceed (is less than or equal to) the signal detection result of the first resource.

For how the terminal selects the 2-step random access type or the 4-step random access type on the first resource for random access according to the magnitude relation between the second threshold and the signal detection result of the first resource, the following method may be adopted:

1) If resources of a 2-step random access type and a 4-step random access type are simultaneously configured in the first resource and the signal detection result of the first resource exceeds/is greater than a second threshold, selecting the 2-step random access type on the first resource for random access, namely the random access is the 2-step random access type; alternatively, the first and second liquid crystal display panels may be,

2) If the resources of the 2-step random access type and the 4-step random access type are configured in the first resource at the same time, and the signal detection result of the first resource exceeds/is greater than the second threshold, the 4-step random access type is selected from the first resource for random access, that is, the random access is the 4-step random access type, which is not particularly limited.

Exemplarily, taking the first resource as a carrier, if resources of a 2-step random access type and a 4-step random access type are configured in the carrier at the same time, and a signal detection result of the carrier exceeds/is greater than a second threshold, the terminal performs random access on the carrier by using the 2-step random access type, or performs random access by using the 4-step random access type.

For example, taking the first resource as a BWP, if resources of a 2-step random access type and a 4-step random access type are configured in the BWP at the same time, and a signal detection result of the BWP exceeds/is greater than a second threshold, the terminal performs random access on the BWP using the 2-step random access type or using the 4-step random access type.

Since there may be discontinuous frequency domain resources in a cell, how to calculate a random access radio network temporary identifier (RA-RNTI) of a cell supporting the discontinuous frequency domain resources needs further research.

In the embodiment of the application, the terminal needs to determine the RA-RNT.

In some embodiments, the RA-RNTI may be determined by the first index value and/or the first offset; the first index value may be an index value of a resource in a discontinuous frequency domain resource for random access preamble (preamble) transmission, and the first index value is a positive integer; the first offset is an offset of the first index value.

For example, the first index value may be an index value of one carrier or BWP in the non-contiguous frequency domain resource for random access preamble transmission.

Specifically, the first index value may be 0, 1, 2 or other values; the first offset may be 0, 2, or other values.

For example, if a carrier in the non-contiguous frequency domain resources for random access preamble transmission is a normal uplink carrier (NUL carrier), the first index value is 0; if a carrier in the non-contiguous frequency domain resources for random access preamble transmission is a supplemental uplink carrier (SUL carrier), the first index value is 1; in addition, the first index value is 2.

For another example, if the first index value is 0, the first offset is 0; if the first index value is a value other than 0, the first offset is 2.

Further, the RA-RNTI may also be determined by at least one of the second index value, the third index value, the fourth index value, and a preset parameter value; wherein the second index value is an index of a first Orthogonal Frequency Division Multiplexing (OFDM) symbol of a random access occasion (RO) of the random access preamble; the third index value is an index of a first slot of the RO in the system frame; the fourth index value is an index of the RO in the non-contiguous frequency domain resource.

Wherein the second index value is a positive integer greater than or equal to 0 and less than 14; alternatively, the third index value is a positive integer greater than or equal to 0 and less than 80; alternatively, the fourth index value is a positive integer greater than or equal to 0 and less than 8.

Illustratively, the RA-RNTI may satisfy the following expression:

value＝1+s_id+14×t_id+14×80×f_id+14×80×8×(ul_noncontinuous_id+offset)；

wherein value is used for representing RA-RNTI; ul _ noncontinous _ id is used to represent a first index value; offset is used to represent a first offset amount; s _ id is used to represent a second index value; t _ id is used to represent a third index value; f _ id is used to represent the fourth index value.

The above description has mainly described the solution of the embodiments of the present application from the perspective of the method side. It is understood that the terminal or the network device includes a hardware structure and/or a software module for performing the respective functions in order to implement the above functions. Those of skill in the art will 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 in 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.

The embodiment of the present application may perform division of functional units on a terminal or a network device according to the above method example. For example, each functional unit may be divided for each function, or two or more functions may be integrated into one processing unit. The integrated unit may be implemented in the form of hardware, or may be implemented in the form of a software program module. It should be noted that the division of the units in the embodiment of the present application is illustrative, and is only one division of the logic functions, and there may be another division in actual implementation.

In the case of an integrated unit, fig. 8 provides a block diagram of the functional units of an apparatus for random access. The apparatus 800 for random access includes: a processing unit 802 and a communication unit 803. The processing unit 802 is configured to control and manage actions of the apparatus 800 for random access. For example, the processing unit 802 is configured to support the apparatus 800 for random access to perform the steps performed by the terminal in fig. 4 and other processes for the technical solutions described in this application. The communication unit 803 is used to support communication between the apparatus for random access 800 and other devices in the wireless communication system. The apparatus for random access 800 may further comprise a storage unit 801 for storing computer programs or instructions for execution by the apparatus for random access 800.

It should be noted that the apparatus 800 for random access may be a chip or a chip module.

The processing unit 802 may be a processor or a controller, and may be, for example, a Central Processing Unit (CPU), a general-purpose processor, a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a 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 processing unit 802 may also be a combination of computing functions, e.g., comprising one or more microprocessors in combination, a DSP and a microprocessor in combination, or the like. The communication unit 803 may be a communication interface, a transceiver, a transceiving circuit, etc., and the storage unit 801 may be a memory. When the processing unit 802 is a processor, the communication unit 803 is a communication interface, and the storage unit 801 is a memory, the apparatus 800 for random access according to the embodiment of the present application may be a terminal shown in fig. 10.

In a specific implementation, the processing unit 802 is configured to perform any step performed by the terminal in the above method embodiment, and when performing data transmission such as sending, the communication unit 803 may be optionally invoked to complete the corresponding operation. The details will be described below.

The processing unit 802 is configured to: acquiring a signal detection result of each resource in the discontinuous frequency domain resources; and if the signal detection result of the first resource in the discontinuous frequency domain resources is greater than a first threshold, determining the first resource as the resource for random access.

It should be noted that specific implementation of each operation in the embodiment shown in fig. 8 may be detailed in the description of the method embodiment shown in fig. 4, and details are not described herein again.

Specifically, the first threshold is a signal detection result threshold used for selecting resources in the discontinuous frequency domain resources for the random access.

Specifically, if the signal detection result of the multiple resources in the discontinuous frequency domain resource is greater than the first threshold, the first resource is the resource of the strongest signal detection result in the multiple resources; or the first resource is the lowest indexed resource in the plurality of resources; alternatively, the first resource is a randomly selected resource of a plurality of resources.

Specifically, if resources of 2-step random access types and 4-step random access types are simultaneously configured in the first resource, and the signal detection result of the first resource is greater than a second threshold, the random access is of the 2-step random access type; or the random access is a 4-step random access type.

Specifically, the second threshold is a signal detection result threshold used for selecting the 2-step random access type and the 4-step random access type.

Specifically, the first resource is a carrier or a bandwidth portion.

Specifically, each resource in the discontinuous frequency domain resources belongs to the same cell.

Specifically, the signal detection result of each resource in the discontinuous frequency domain resources is obtained by measuring a downlink reference signal by the terminal.

Specifically, the resource carrying the downlink reference signal is indicated by the paging downlink control information.

Specifically, the resource carrying the downlink reference signal has an association relationship with each resource in the discontinuous frequency domain resource.

Specifically, the processing unit 802 is further configured to: and determining a random access radio network temporary identifier RA-RNTI.

Specifically, the RA-RNTI is determined by a first index value and/or a first offset; the first index value is an index value of resources in discontinuous frequency domain resources for random access preamble transmission, and the first index value is a positive integer; the first offset is an offset of the first index value.

Specifically, the RA-RNTI is further determined by at least one of the second index value, the third index value, the fourth index value, and a preset parameter value; wherein, the second index value is the index value of the first orthogonal frequency division multiplexing OFDM symbol of the random access opportunity RO of the random access preamble; the third index value is an index value of a first slot of the RO in the system frame; the fourth index value is an index value of the RO in the non-contiguous frequency domain resource.

Specifically, the second index value is a positive integer greater than or equal to 0 and less than 14; alternatively, the third index value is a positive integer greater than or equal to 0 and less than 80; alternatively, the fourth index value is a positive integer greater than or equal to 0 and less than 8.

Specifically, the RA-RNTI satisfies the following expression:

value＝1+s_id+14×t_id+14×80×f_id+14×80×8×(ul_noncontinuous_id+offset)；

In case of an integrated unit, fig. 9 provides a block diagram of functional units of yet another apparatus for random access. The apparatus 900 for random access comprises: a processing unit 902 and a communication unit 903. The processing unit 902 is configured to control and manage actions of the apparatus 900 for random access, for example, the processing unit 902 is configured to support the apparatus 900 for random access to perform steps performed by the network device in fig. 4 and other processes used in the technical solutions described in this application. The communication unit 903 is used to support communication between the apparatus for random access 900 and other devices in a wireless communication system. The apparatus 900 for random access may further comprise a storage unit 901 for storing computer programs or instructions for execution by the apparatus 900 for random access.

It should be noted that the apparatus 900 for random access may be a chip or a chip module.

The processing unit 902 may be a processor or a controller, and may be, for example, a CPU, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a 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 processing unit 902 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 unit 903 may be a communication interface, a transceiver, a transceiving circuit, etc., and the storage unit 901 may be a memory. When the processing unit 902 is a processor, the communication unit 903 is a communication interface, and the storage unit 901 is a memory, the apparatus 900 for random access in this embodiment may be a network device shown in fig. 11.

In a specific implementation, the processing unit 902 is configured to perform any step performed by the network device in the above method embodiment, and when performing data transmission such as sending, the communication unit 903 may be optionally invoked to complete the corresponding operation. The details will be described below.

The processing unit 902 is configured to: configuring a first threshold, the first threshold being a signal detection result threshold for selecting resources in non-contiguous frequency domain resources for random access.

It should be noted that specific implementation of each operation in the embodiment shown in fig. 9 may be described in detail in the method embodiment shown in fig. 4, and details are not described herein again.

Specifically, each resource in the discontinuous frequency domain resources is a carrier or a bandwidth.

Specifically, the processing unit 902 is further configured to: and sending a downlink reference signal on each resource in the discontinuous frequency domain resources, wherein the downlink reference signal is used for determining the signal detection result of each resource in the discontinuous frequency domain resources.

Specifically, the processing unit 902 is further configured to: and configuring a second threshold for each resource in the discontinuous frequency domain resources, wherein the second threshold is a signal detection result threshold used for selecting the 2-step random access type and the 4-step random access type.

Specifically, the processing unit 902 is further configured to: configuring a first index value and/or a first offset; the first index value is an index value of discontinuous frequency domain resources for random access preamble transmission, and the first index value is a positive integer; the first offset is an offset of the first index value.

Specifically, the processing unit 902 is further configured to: configuring at least one item of a second index value, a third index value, a fourth index value and a preset parameter value; wherein, the second index value is the index value of the first orthogonal frequency division multiplexing OFDM symbol of the random access opportunity RO of the random access preamble; the third index value is an index value of a first slot of the RO in the system frame; the fourth index value is an index value of the RO in the non-contiguous frequency domain resource.

Referring to fig. 10, fig. 10 is a schematic structural diagram of a terminal according to an embodiment of the present application. Wherein, the terminal 1000 includes a processor 1010, a memory 1020, a communication interface 1030, and a communication bus for connecting the processor 1010, the memory 1020, and the communication interface 1030.

The memory 1020 includes, but is not limited to, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a portable read-only memory (CD-ROM), and the memory 1020 is used for storing computer programs or instructions.

The communication interface 1030 is used for receiving and transmitting data.

The processor 1010 may be one or more CPUs, and in the case where the processor 1010 is one CPU, the CPU may be a single-core CPU or a multi-core CPU.

Processor 1010 in terminal 1000 executes computer programs or instructions 1021 stored in memory 1020 to: acquiring a signal detection result of each resource in the discontinuous frequency domain resources; and if the signal detection result of the first resource in the discontinuous frequency domain resources is greater than a first threshold, determining the first resource as the resource for random access.

It should be noted that specific implementation of each operation may adopt corresponding description of the method embodiment shown in fig. 4, and the terminal 1000 may be configured to execute the method on the terminal side of the method embodiment of the present application, which is not described herein again in detail.

Referring to fig. 11, fig. 11 is a schematic structural diagram of a network device according to an embodiment of the present application. The network device 1100 includes a processor 1110, a memory 1120, a communication interface 1130, and a communication bus for connecting the processor 1110, the memory 1120, and the communication interface 1130.

The memory 1120 includes, but is not limited to, RAM, ROM, EPROM or CD-ROM, and the memory 1120 is used to store computer programs or instructions.

The communication interface 1130 is used to receive and transmit data.

The processor 1110 may be one or more CPUs, and in the case that the processor 1110 is one CPU, the CPU may be a single-core CPU or a multi-core CPU.

The processor 1110 in the network device 1100 executes the computer programs or instructions 1121 stored in the memory 1120 to implement the following operations: a first threshold is configured, the first threshold being a signal detection result threshold for selecting resources in non-contiguous frequency domain resources for random access.

It should be noted that the specific implementation of each operation may adopt the corresponding description of the method embodiment shown in fig. 4, and the network device 1100 may be configured to execute the method on the network device side of the method embodiment of the present application, which is not described in detail herein.

The embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program or instructions, and when the computer program or instructions are executed by a processor, the steps described in the terminal or the network device in the foregoing method embodiments are implemented.

The embodiment of the present application further provides a computer program product, where the computer program product includes a computer program or an instruction, where the computer program or the instruction is executed by a processor to implement the terminal or the network device in the foregoing method embodiments. The computer program or instructions may be, for example, a software installation package.

For simplicity of description, the above embodiments are described as a series of combinations of operations. It will be appreciated by those of skill in the art that the present application is not limited by the order of acts described, as some steps in the embodiments of the present application may occur in other orders or concurrently. In addition, those skilled in the art should also realize that the embodiments described in the specification all belong to the preferred embodiments, and that the referred actions, steps, modules, units, and the like are not necessarily required by the embodiments of the present application.

In the foregoing embodiments, the descriptions of the embodiments of the present application have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

It should be clear to a person skilled in the art that the methods, steps or functions of related modules/units described in the embodiments of the present application can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product or in the form of computer program instructions executed by a processor. Wherein the computer program product comprises at least one computer program instruction, which may be constituted by respective software modules, which may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, a removable hard disk, a compact disc read only memory (CD-ROM), or any other form of storage medium known in the art. The computer program instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium. For example, the computer program instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wired or wireless means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium, or a semiconductor medium (e.g., SSD), among others.

Each module/unit included in each apparatus or product described in the above embodiments may be a software module/unit, a hardware module/unit, or a part of the module/unit may be a software module/unit and another part may be a hardware module/unit. For example, for each device or product applied to or integrated on a chip, each module/unit included in the device or product may be implemented by using hardware such as a circuit; alternatively, a part of the modules/units included in the method may be implemented by using a software program running on a processor integrated inside a chip, and another part (if any) of the modules/units may be implemented by using hardware such as a circuit. The same applies to individual devices or products applied to or integrated in a chip module, or to individual devices or products applied to or integrated in a terminal.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the embodiments of the present application in further detail, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present application, and are not intended to limit the scope of the embodiments of the present application. Any modification, equivalent replacement, improvement and the like made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A method for random access, comprising:

2. The method of claim 1, wherein the first threshold is a signal detection result threshold used for selecting resources of the non-contiguous frequency-domain resources for the random access.

3. The method of claim 1, wherein if the signal detection result of a plurality of resources existing in the non-continuous frequency domain resource is greater than the first threshold, then the method further comprises

The first resource is a resource of a detection result of a strongest signal in the plurality of resources; alternatively, the first and second electrodes may be,

the first resource is a lowest indexed resource of the plurality of resources; alternatively, the first and second liquid crystal display panels may be,

the first resource is a randomly selected resource of the plurality of resources.

4. The method of claim 1,

if resources of 2-step random access type and 4-step random access type are simultaneously configured in the first resource and the signal detection result of the first resource is greater than a second threshold, then

The random access is the 2-step random access type; or alternatively

The random access is the 4-step random access type.

5. The method of claim 4, wherein the second threshold is a signal detection result threshold for selecting between the 2-step random access type and the 4-step random access type.

6. The method of claim 1, wherein the first resource is one carrier or one bandwidth portion.

7. The method of claim 1, wherein each of the non-contiguous frequency-domain resources belongs to a same cell.

8. The method according to any of claims 1-7, wherein the signal detection result of each resource in the non-contiguous frequency domain resources is obtained by the terminal measuring a downlink reference signal.

9. The method of claim 8, wherein the resource carrying the downlink reference signal is indicated by paging downlink control information.

10. The method of claim 9, wherein the resource carrying the downlink reference signal has an association relationship with each resource in the non-contiguous frequency domain resources.

11. The method of any one of claims 1-10, further comprising:

and the terminal determines a random access radio network temporary identifier RA-RNTI.

12. The method of claim 11, wherein the RA-RNTI is determined by a first index value and/or a first offset; wherein the content of the first and second substances,

the first index value is an index value of a resource in the non-contiguous frequency domain resources for random access preamble transmission, the first index value being a positive integer;

the first offset is an offset of the first index value.

13. The method of claim 12, wherein the RA-RNTI is further determined by at least one of a second index value, a third index value, a fourth index value, and a preset parameter value; wherein the content of the first and second substances,

the second index value is an index value of a first orthogonal frequency division multiplexing, OFDM, symbol of a random access occasion, RO, of the random access preamble;

the third index value is an index value of a first slot of the RO in a system frame;

the fourth index value is an index value of the RO in the non-contiguous frequency-domain resource.

14. The method of claim 13, wherein the second index value is a positive integer greater than or equal to 0 and less than 14; alternatively, the first and second liquid crystal display panels may be,

the third index value is a positive integer greater than or equal to 0 and less than 80; alternatively, the first and second electrodes may be,

the fourth index value is a positive integer greater than or equal to 0 and less than 8.

15. The method of claim 13, wherein the RA-RNTI satisfies the following expression:

value＝1+s_id+14×t_id+14×80×f_id+14×80×8×(ul_noncontinuous_id+offset)；

wherein the value is used for representing the RA-RNTI; the ul _ non-continuous _ id is used for representing the first index value; the offset is used to represent the first offset amount; the s _ id is used for representing the second index value; the t _ id is used for representing the third index value; the f _ id is used to represent the fourth index value.

16. A method for random access, comprising:

17. The method of claim 16, wherein each of the non-contiguous frequency-domain resources belongs to a same cell.

18. The method of claim 16, wherein each of the non-contiguous frequency-domain resources is a carrier or a bandwidth.

19. The method of any one of claims 16-18, further comprising:

and the network equipment sends downlink reference signals on each resource in the discontinuous frequency domain resources, wherein the downlink reference signals are used for determining the signal detection result of each resource in the discontinuous frequency domain resources.

20. The method of any one of claims 16-19, further comprising:

and the network equipment configures a second threshold for each resource in the discontinuous frequency domain resources, wherein the second threshold is a signal detection result threshold used for selecting the 2-step random access type and the 4-step random access type.

21. The method of any one of claims 16-20, further comprising:

the network equipment configures a first index value and/or a first offset; wherein, the first and the second end of the pipe are connected with each other,

the first index value is an index value of the non-contiguous frequency domain resource for random access preamble transmission, the first index value being a positive integer;

the first offset is an offset of the first index value.

22. The method of claim 21, further comprising:

the network equipment configures at least one item of a second index value, a third index value, a fourth index value and a preset parameter value; wherein the content of the first and second substances,

the second index value is an index value of a first orthogonal frequency division multiplexing, OFDM, symbol of a random access occasion RO of the random access preamble;

23. An apparatus for random access, the apparatus comprising a processing unit and a communication unit, the processing unit configured to:

24. An apparatus for random access, the apparatus comprising a processing unit and a communication unit, the processing unit configured to:

25. A terminal comprising a processor, a memory, a communications interface, and a computer program or instructions stored on the memory, the processor executing the computer program or instructions to implement the method of any of claims 1-15.

26. A network device comprising a processor, a memory, a communication interface, and a computer program or instructions stored on the memory, the processor executing the computer program or instructions to implement the method of any of claims 16-22.

27. A computer-readable storage medium, characterized in that it stores a computer program or instructions, wherein the computer program or instructions, when executed by a processor, implement the method of any one of claims 1-22.