CN112534946A

CN112534946A - Random access method and device, terminal and base station

Info

Publication number: CN112534946A
Application number: CN201880096317.6A
Authority: CN
Inventors: 徐伟杰
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-11-09
Filing date: 2018-11-09
Publication date: 2021-03-19
Also published as: WO2020093403A1

Abstract

The embodiment of the application provides a random access method and device, a terminal and a base station, and the method comprises the following steps: a terminal acquires configuration information of M downlink carriers and configuration information of N uplink carriers, wherein M and N are positive integers; the terminal sends a first message on a first carrier wave and receives a second message on a second carrier wave, wherein the second message comprises uplink scheduling information of a third message, and the uplink scheduling information of the third message indicates that the third message is transmitted on the third carrier wave; wherein the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.

Description

Random access method and device, terminal and base station

Technical Field

The embodiment of the application relates to the technical field of mobile communication, in particular to a random access method and device, a terminal and a base station.

Background

One way of the random access procedure is to use a four-step random access procedure based on contention. In the four-step random access process, MSG1 and MSG3 need to be transmitted on the same UpLink carrier in the same cell, and the UpLink (UpLink, UL) BandWidth Part (BWP) for transmitting MSG3 is configured to the terminal uniquely and in advance by higher layer signaling. This mechanism is available in the licensed band, but in the unlicensed band, when the terminal finishes transmitting MSG1 and the network side replies MSG2, the pre-configured carrier for transmitting MSG3 may be in a state occupied by other devices, and at this time, the terminal will not be able to successfully transmit MSG3 to the base station, even if there are other idle channels. At this time, the terminal will not be able to successfully transmit the MSG3 according to the scheduling information of the MSG2, resulting in that this random access procedure is extended.

Disclosure of Invention

The embodiment of the application provides a random access method and device, a terminal and a base station.

The random access method provided by the embodiment of the application comprises the following steps:

a terminal acquires configuration information of M downlink carriers and configuration information of N uplink carriers, wherein M and N are positive integers;

the terminal sends a first message on a first carrier wave and receives a second message on a second carrier wave, wherein the second message comprises uplink scheduling information of a third message, and the uplink scheduling information of the third message indicates that the third message is transmitted on the third carrier wave; wherein the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.

a base station configures configuration information of M downlink carriers and configuration information of N uplink carriers for a terminal, wherein M and N are positive integers;

the base station receives a first message on a first carrier and sends a second message on a second carrier, wherein the second message comprises uplink scheduling information of a third message, and the uplink scheduling information of the third message indicates that the third message is transmitted on the third carrier; wherein the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.

The random access apparatus provided in the embodiment of the present application includes:

an obtaining unit, configured to obtain configuration information of M downlink carriers and configuration information of N uplink carriers, where M and N are positive integers;

a random access unit, configured to send a first message on a first carrier, and receive a second message on a second carrier, where the second message includes uplink scheduling information for a third message, and the uplink scheduling information of the third message indicates that the third message is transmitted on the third carrier; wherein the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.

a configuration unit, configured to configure configuration information of M downlink carriers and configuration information of N uplink carriers for a terminal, where M and N are positive integers;

a random access unit, configured to receive a first message on a first carrier and send a second message on a second carrier, where the second message includes uplink scheduling information for a third message, and the uplink scheduling information of the third message indicates that the third message is transmitted on the third carrier; wherein the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.

The terminal provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing computer programs, and the processor is used for calling and running the computer programs stored in the memory and executing the random access method.

The base station provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing computer programs, and the processor is used for calling and running the computer programs stored in the memory and executing the random access method.

The chip provided by the embodiment of the application is used for realizing the random access method.

Specifically, the chip includes: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the random access method.

A computer-readable storage medium provided in an embodiment of the present application is used for storing a computer program, where the computer program enables a computer to execute the random access method described above.

The computer program product provided by the embodiment of the present application includes computer program instructions, which enable a computer to execute the random access method described above.

The computer program provided in the embodiments of the present application, when running on a computer, causes the computer to execute the random access method described above.

According to the technical scheme of the embodiment of the application, the transmission resource information of the third message (namely the MSG3) is flexibly indicated in the second message (namely the MSG2), so that the probability of successful transmission of the MSG3 is increased, and the terminal can be ensured to be capable of successfully transmitting the MSG 3.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

fig. 2 is a schematic diagram of a four-step random access procedure provided in an embodiment of the present application;

fig. 3 is a first flowchart of a random access method according to an embodiment of the present application;

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

fig. 5 is a first schematic structural diagram of a random access apparatus according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a random access apparatus according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a chip of an embodiment of the present application;

fig. 9 is a schematic block diagram of a communication system according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, or a 5G System.

Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals located within the coverage area. Optionally, the Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or may be a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.

The communication system 100 further comprises at least one terminal 120 located within the coverage area of the network device 110. As used herein, "terminal" includes, but is not limited to, connection via a wireline, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a Digital cable, a direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal that is arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A terminal can refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal in a 5G network, or a terminal in a future evolved PLMN, etc.

Optionally, a Device to Device (D2D) communication may be performed between the terminals 120.

Alternatively, the 5G system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.

Fig. 1 exemplarily shows one network device and two terminals, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminals within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal 120 having a communication function, and the network device 110 and the terminal 120 may be the specific devices described above and are not described again here; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the following description will be made of related technologies related to the embodiments of the present application.

Referring to fig. 2, fig. 2 is a schematic diagram of a four-step random access procedure provided in this embodiment of the present application, first, a terminal sends MSG1 to a base station, where MSG1 may include a random access preamble. After receiving the MSG1, the base station may send MSG2 on a Downlink shared Channel (DL-SCH). Among them, MSG2 is a Random Access Response (RAR). In the MSG2, the base station may inform the terminal of the available uplink resources for transmitting MSG 3. After receiving the MSG2, the terminal determines whether it belongs to its RAR message, and when it is determined that it belongs to its RAR message, it sends MSG3 in the uplink resource designated by MSG 2. After receiving the MSG3, the base station may send an MSG4 message to the terminal, where the MSG4 includes a contention resolution message to complete the random access procedure.

Fig. 3 is a first flowchart of a random access method provided in an embodiment of the present application, where the random access method is applied to a terminal side, and as shown in fig. 3, the random access method includes the following steps:

step 301: the terminal acquires configuration information of M downlink carriers and configuration information of N uplink carriers, wherein M and N are positive integers.

In the embodiment of the application, the terminal can be any equipment capable of communicating with a network, such as a mobile phone, a tablet computer, a notebook computer, a vehicle-mounted terminal and the like.

In this embodiment of the present application, the terminal obtains, from a base station, configuration information of M downlink carriers and configuration information of N uplink carriers, where M and N are positive integers, and it should be noted that values of M and N may be different or the same.

In this embodiment of the present application, the Carrier is BWP, or the Carrier is a Component Carrier (CC), or the Carrier is a predefined subband. For example: the bandwidth of 80MHz is divided into 4 non-overlapping sub-bands, each having a bandwidth of 20 MHz.

In an embodiment, the first carrier and/or the second carrier and/or the third carrier have the same BWP ID, or CC ID, or predefined subband ID.

The description of the carrier in the embodiments of the present application may be replaced with BWP. For example: the terminal acquires configuration information of M downlink BWPs and configuration information of N uplink BWPs, wherein M and N are positive integers.

In this embodiment of the present application, the terminal obtains the configurations of the M downlink carriers and the configurations of the N uplink carriers through Radio Resource Control (RRC) dedicated signaling or system broadcast message.

Step 302: the terminal sends a first message on a first carrier wave and receives a second message on a second carrier wave, wherein the second message comprises uplink scheduling information of a third message, and the uplink scheduling information of the third message indicates that the third message is transmitted on the third carrier wave; wherein the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.

In this embodiment, the first message is MSG1 in the random access process.

In this embodiment of the application, the second message is MSG2 in the random access process, or scheduling information of retransmission of MSG3 in the random access process.

In this embodiment of the present application, the third message is MSG3 in the random access process.

In this embodiment of the application, the second message is transmitted in a Downlink Control Information (DCI) manner, or in a Media Access Control (MAC) Control unit (Control Element, CE) manner, or in an RRC dedicated signaling manner.

In this embodiment of the present application, the third carrier and the first carrier are the same carrier; alternatively, the third carrier and the first carrier are different carriers.

In this embodiment of the present application, the third carrier is an initially activated downlink BWP.

For example: the terminal is pre-configured with M downlink BWPs and N uplink BWPs. The terminal sends MSG1 on the first BWP and receives MSG2 on the second BWP, MSG2 includes the uplink scheduling information for MSG3, the uplink scheduling information for MSG3 indicates that MSG3 is transmitted on the third BWP.

In this embodiment of the application, the uplink scheduling information of the third message may indicate at least one of the following information: a third carrier wave for transmitting the third message, time domain resources for transmitting the third message, and frequency domain resources for transmitting the third message. The following describes an implementation of uplink scheduling information of the third message.

1) The uplink scheduling information of the third message includes first indication information, and the first indication information is used for indicating a third carrier, which transmits the third message, among the N uplink carriers.

Wherein the first indication information is used for indicating one or more carriers in the N uplink carriers.

For example: the first indication information indicates that the third BWP is the kth of the preconfigured N upstream BWPs. Wherein the third BWP and the first BWP are the same BWP, or the third BWP and the first BWP are not the same BWP.

For another example: the first indication information may indicate a plurality of BWPs when indicating the third BWP, the indicated plurality of BWPs being N of the N preconfigured upstream BWPs, e.g., indicating the 2 nd and 4 th preconfigured BWPs, respectively. It should be noted that here, a plurality of preconfigured BWPs form a set of candidate sets of the third BWP.

If the first indication information indicates one carrier in the N uplink carriers, the terminal takes the carrier indicated by the first indication information as the third carrier for sending the third message, and sends the third message on the third carrier;

if the first indication information indicates multiple carriers in the N uplink carriers, the terminal selects one carrier from the multiple carriers indicated by the first indication information as the third carrier for sending the third message, and sends the third message on the selected third carrier. Further, the terminal selects one carrier among the plurality of carriers indicated by the first indication information as the third carrier to send the third message based on a result of performing Listen Before Talk (LBT).

For example: the first indication information indicates that the candidate set for the third BWP includes BWP2, BWP4, BWP5, and the terminal selects available BWP4 for sending MSG3 according to the LBT result.

2) The uplink scheduling information of the third message includes second indication information, and the second indication information is used for indicating at least one set of time domain resource configuration information for transmitting the third message.

Wherein, if the first indication information indicates multiple carriers in the N uplink carriers, the multiple carriers use the same time domain resource configuration information, or a part of the multiple carriers use the same time domain resource configuration information, or all of the multiple carriers use different time domain resource configuration information.

For example: the first indication information indicates that the candidate set of the third BWP includes BWP2, BWP4, BWP5, and each BWP in the candidate set of the third BWP may have independent time-domain resource configuration information as indicated in the second indication information, or some or all BWPs may share the same time-domain resource configuration information as indicated in the second indication information.

Further, one or more time domain resources are configured in each set of time domain resource configuration information.

And after the terminal determines to send the third carrier of the third message based on the first indication information, determining target time domain resource configuration information adopted by the third carrier based on the second indication information, and if one time domain resource is configured in the target time domain resource configuration information, the terminal takes the one time domain resource as a target time domain resource for sending the third message and sends the third message on the target time domain resource of the third carrier. And/or the presence of a gas in the gas,

the terminal determines, based on the first indication information, target time domain resource configuration information adopted by the third carrier after determining to send the third carrier of the third message, and if multiple time domain resources are configured in the target time domain resource configuration information, the terminal selects one time domain resource from the multiple time domain resources as a target time domain resource for sending the third message, and sends the third message on the target time domain resource of the third carrier. Further, the terminal selects one time domain resource from the plurality of time domain resources as a target time domain resource for transmitting the third message based on a result of performing LBT.

3) The uplink scheduling information of the third message includes third indication information, and the third indication information is used for indicating at least one set of frequency domain resource configuration information for transmitting the third message.

Further, the frequency domain resource configuration information refers toFrequency domain resource configuration information within a carrier (e.g., BWP)。

Wherein, if the first indication information indicates multiple carriers in the N uplink carriers, the multiple carriers use the same frequency domain resource configuration information, or a part of the multiple carriers use the same frequency domain resource configuration information, or all of the multiple carriers use different frequency domain resource configuration information. .

For example: the first indication information indicates that the candidate set of the third BWP includes BWP2, BWP4, BWP5, and each BWP in the candidate set of the third BWP may have independent frequency-domain resource configuration information as indicated in the third indication information, or some or all BWPs may share the same frequency-domain resource configuration information as indicated in the third indication information.

Further, one or more frequency domain resources are configured in each set of the frequency domain resource configuration information;

after the terminal determines to send the third carrier of the third message based on the first indication information, the terminal determines target frequency domain resource configuration information adopted by the third carrier based on the third indication information, and if one frequency domain resource is configured in the target frequency domain resource configuration information, the terminal takes the one frequency domain resource as a target frequency domain resource for sending the third message and sends the third message on the target frequency domain resource of the third carrier; and/or the presence of a gas in the gas,

the terminal determines, based on the first indication information, target frequency domain resource configuration information adopted by the third carrier after determining to send the third carrier of the third message, and if multiple frequency domain resources are configured in the target frequency domain resource configuration information, the terminal selects one frequency domain resource from the multiple frequency domain resources as a target frequency domain resource for sending the third message, and sends the third message on the target frequency domain resource of the third carrier. Further, the terminal selects one frequency domain resource among the plurality of frequency domain resources as a target frequency domain resource for transmitting the third message based on a result of performing LBT.

The transmission resource information (BWP, time domain resource, frequency domain resource) of the third message may be determined by arbitrarily combining 1), 2), and 3). Specifically, if a plurality of BWPs are determined based on the first indication information in 1), a plurality of sets of time domain resource allocation information are determined based on the second indication information in 2), and a plurality of sets of frequency domain resource allocation information are determined based on the third indication information in 3), then: the terminal selects one BWP from the plurality of BWPs indicated by the first indication information as a third BWP to send a third message, and determines target time-domain resource configuration information adopted by the selected third BWP based on the second indication information and target frequency-domain resource configuration information adopted by the selected third BWP based on the third indication information; further, a plurality of time domain resources are configured in the target time domain resource configuration information, a plurality of frequency domain resources are configured in the target frequency domain resource configuration information, the terminal selects one time domain resource from the plurality of time domain resources as a target time domain resource for sending the third message, and selects one frequency domain resource from the plurality of frequency domain resources as a target frequency domain resource for sending the third message. Here, the terminal makes the above selection based on the LBT result, and selects the available BWP, and the time domain resource and the frequency domain resource on the BWP.

In this embodiment, when a plurality of BWPs form a candidate set of a third BWP and the BWPs share a frequency domain resource scheduled by the third indication information, the frequency domain resource scheduled by the third indication information may be associated with different BWPs by:

the first method is as follows: and when the bandwidth size of the third carrier is equal to the bandwidth size of the first carrier, and the uplink scheduling information in the second message indicates that the maximum range of the frequency domain size of the scheduled resource is the bandwidth size of the third carrier when the third message is scheduled on the third carrier.

The second method comprises the following steps: and when the bandwidth size of the third carrier is smaller than the bandwidth size of the first carrier, and the uplink scheduling information in the second message indicates that the maximum range of the frequency domain size of the scheduled resource is the bandwidth size of the third bandwidth when the third message is scheduled on the third carrier.

The third method comprises the following steps: when the uplink scheduling information in the second message indicates that the third message is scheduled on the third carrier under the condition that the bandwidth size of the third carrier is greater than the bandwidth size of the first carrier, the maximum range of the frequency domain size of the scheduled resource includes:

the frequency domain range of the scheduled resource belongs to the frequency domain resource range of the third carrier with the smallest number RB starting number increasing and the bandwidth size not exceeding the bandwidth size of the first carrier; or

The frequency domain range of the scheduled resource belongs to the frequency domain resource range of the third carrier with the maximum number RB starting number decreasing and the bandwidth size not exceeding the bandwidth size of the first carrier; or

The frequency domain range of the scheduled resource belongs to the frequency domain resource range which takes the third carrier center as the center and the bandwidth size does not exceed the bandwidth size of the first carrier.

Fig. 4 is a second flowchart of a random access method provided in an embodiment of the present application, where the random access method is applied to a base station side, and as shown in fig. 4, the random access method includes the following steps:

step 401: the base station configures configuration information of M downlink carriers and configuration information of N uplink carriers for the terminal, wherein M and N are positive integers.

In this embodiment of the application, the type of the base station is not limited, and for example, the base station may be an NR base station, such as a gNB. Or may be a 4G base station, such as an eNB.

In this embodiment, the base station configures, through RRC dedicated signaling or system broadcast message, configuration information of M downlink carriers and configuration information of N uplink carriers for the terminal. It should be noted that the values of M and N may be different or the same.

In this embodiment of the present application, the carrier is BWP, or the carrier is CC, or the carrier is a predefined subband. In an embodiment, the first carrier and/or the second carrier and/or the third carrier have the same BWP ID, or CC ID, or predefined subband ID.

The description of the carrier in the embodiments of the present application may be replaced with BWP. For example: the base station configures configuration information of M downlink BWPs and configuration information of N uplink BWPs, wherein M and N are positive integers.

Step 402: the base station receives a first message on a first carrier and sends a second message on a second carrier, wherein the second message comprises uplink scheduling information of a third message, and the uplink scheduling information of the third message indicates that the third message is transmitted on the third carrier; wherein the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.

In this embodiment, the first message is MSG1 in the random access process.

In this embodiment of the present application, the second message is transmitted in a DCI manner, or in a MAC CE manner, or in an RRC dedicated signaling manner.

For example: the base station is configured with M downlink BWPs and N uplink BWPs in advance. The base station receives the MSG1 on the first BWP, and transmits the MSG2 on the second BWP, wherein the MSG2 comprises the uplink scheduling information of the MSG3, and the uplink scheduling information of the MSG3 indicates that the MSG3 is transmitted on the third BWP.

Further, the frequency domain resource configuration information refers to frequency domain resource configuration information within a carrier.

Wherein, if the first indication information indicates multiple carriers in the N uplink carriers, the multiple carriers use the same frequency domain resource configuration information, or a part of the multiple carriers use the same frequency domain resource configuration information, or all of the multiple carriers use different frequency domain resource configuration information.

Further, one or more frequency domain resources are configured in each set of the frequency domain resource configuration information.

The transmission resource information (BWP, time domain resource, frequency domain resource) of the third message may be determined by arbitrarily combining 1), 2), and 3). Specifically, if a plurality of BWPs are determined based on the first indication information in 1), a plurality of sets of time domain resource allocation information are determined based on the second indication information in 2), and a plurality of sets of frequency domain resource allocation information are determined based on the third indication information in 3), then: the terminal selects one BWP from the plurality of BWPs indicated by the first indication information as a third BWP to send a third message, and determines target time-domain resource configuration information adopted by the selected third BWP based on the second indication information and target frequency-domain resource configuration information adopted by the selected third BWP based on the third indication information; further, a plurality of time domain resources are configured in the target time domain resource configuration information, a plurality of frequency domain resources are configured in the target frequency domain resource configuration information, the terminal selects one time domain resource from the plurality of time domain resources as a target time domain resource for sending the third message, and selects one frequency domain resource from the plurality of frequency domain resources as a target frequency domain resource for sending the third message. Here, the terminal makes the above selection according to the LBT result, and selects an available BWP, and time-domain resources on the BWP, and frequency-domain resources on the BWP.

Fig. 5 is a schematic structural diagram of a random access apparatus according to an embodiment of the present application, where the apparatus is applied to a terminal side, and as shown in fig. 5, the apparatus includes:

an obtaining unit 501, configured to obtain configuration information of M downlink carriers and configuration information of N uplink carriers, where M and N are positive integers;

a random access unit 502, configured to send a first message on a first carrier, and receive a second message on a second carrier, where the second message includes uplink scheduling information for a third message, and the uplink scheduling information of the third message indicates that the third message is transmitted on the third carrier; wherein the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.

In an embodiment, the uplink scheduling information of the third message includes first indication information, where the first indication information is used to indicate a third carrier of the N uplink carriers for transmitting the third message.

In an embodiment, the random access unit 502 is configured to:

and if the first indication information indicates one carrier in the N uplink carriers, taking the carrier indicated by the first indication information as the third carrier for sending the third message, and sending the third message on the third carrier.

In an embodiment, the random access unit 502 is configured to:

if the first indication information indicates multiple carriers in the N uplink carriers, selecting one carrier from the multiple carriers indicated by the first indication information as the third carrier for sending the third message, and sending the third message on the selected third carrier.

In an embodiment, the random access unit 502 is configured to select one carrier from the multiple carriers indicated by the first indication information as the third carrier for sending the third message, based on a result of performing LBT.

In an embodiment, the uplink scheduling information of the third message includes second indication information, where the second indication information is used to indicate at least one set of time domain resource configuration information for transmitting the third message.

In an embodiment, if the first indication information indicates multiple carriers in the N uplink carriers, the multiple carriers use the same time domain resource configuration information, or a part of the multiple carriers use the same time domain resource configuration information, or all of the multiple carriers use different time domain resource configuration information.

In one embodiment, each set of the time domain resource configuration information configures one or more time domain resources; the random access unit 502 is configured to:

and after determining to send the third carrier of the third message based on the first indication information, determining target time domain resource configuration information adopted by the third carrier based on the second indication information, if one time domain resource is configured in the target time domain resource configuration information, the terminal takes the one time domain resource as a target time domain resource for sending the third message, and sends the third message on the target time domain resource of the third carrier.

after determining to send the third carrier of the third message based on the first indication information, determining target time domain resource configuration information adopted by the third carrier based on the second indication information, if multiple time domain resources are configured in the target time domain resource configuration information, the terminal selects one time domain resource from the multiple time domain resources as a target time domain resource for sending the third message, and sends the third message on the target time domain resource of the third carrier.

In an embodiment, the random access unit 502 is configured to select one time domain resource from the plurality of time domain resources as a target time domain resource for sending the third message based on a result of performing LBT.

In an embodiment, the uplink scheduling information of the third message includes third indication information, and the third indication information is used to indicate at least one set of frequency domain resource allocation information for transmitting the third message.

In an embodiment, the frequency domain resource allocation information refers to frequency domain resource allocation information within a carrier.

In an embodiment, if the first indication information indicates multiple carriers in the N uplink carriers, the multiple carriers use the same frequency domain resource configuration information, or some of the multiple carriers use the same frequency domain resource configuration information, or all of the multiple carriers use different frequency domain resource configuration information.

In one embodiment, each set of the frequency domain resource allocation information is allocated with one or more frequency domain resources; the random access unit 502 is configured to:

after determining to send the third carrier of the third message based on the first indication information, determining target frequency domain resource configuration information adopted by the third carrier based on the third indication information, and if one frequency domain resource is configured in the target frequency domain resource configuration information, the terminal takes the one frequency domain resource as a target frequency domain resource for sending the third message, and sends the third message on the target frequency domain resource of the third carrier.

after determining to send the third carrier of the third message based on the first indication information, determining target frequency domain resource configuration information adopted by the third carrier based on the third indication information, if multiple frequency domain resources are configured in the target frequency domain resource configuration information, the terminal selects one frequency domain resource from the multiple frequency domain resources as a target frequency domain resource for sending the third message, and sends the third message on the target frequency domain resource of the third carrier.

In an embodiment, the random access unit 502 is configured to select one frequency domain resource from the plurality of frequency domain resources as a target frequency domain resource for transmitting the third message based on a result of performing LBT.

In an embodiment, when the bandwidth size of the third carrier is equal to the bandwidth size of the first carrier, the uplink scheduling information in the second message indicates that the maximum range of the frequency domain size of the scheduled resource is the bandwidth size of the third carrier when the third message is scheduled on the third carrier.

In an embodiment, when the bandwidth size of the third carrier is smaller than the bandwidth size of the first carrier, the uplink scheduling information in the second message indicates that the maximum range of the frequency domain size of the scheduled resource is the bandwidth size of the third bandwidth when the third message is scheduled on the third carrier.

In an embodiment, when the bandwidth size of the third carrier is greater than the bandwidth size of the first carrier, and the uplink scheduling information in the second message indicates that when the third message is scheduled on the third carrier, the maximum range of the frequency domain size of the scheduled resource includes:

In an embodiment, the obtaining unit 501 is configured to obtain the configurations of the M downlink carriers and the configurations of the N uplink carriers through RRC dedicated signaling or system broadcast message.

In one embodiment, the first message is MSG1 in a random access procedure.

In an embodiment, the second message is MSG2 in a random access procedure, or scheduling information of retransmission of MSG3 in the random access procedure.

In an embodiment, the second message is transmitted by DCI, MAC CE, or RRC dedicated signaling.

In one embodiment, the third message is MSG3 in a random access procedure.

In an embodiment, the third carrier and the first carrier are the same carrier; alternatively, the third carrier and the first carrier are different carriers.

In an embodiment, the carrier is BWP, or the carrier is CC, or the carrier is a predefined subband.

In an embodiment, the third carrier is an initially activated downlink BWP.

It should be understood by those skilled in the art that the foregoing description of the random access device according to the embodiments of the present application may be understood by referring to the description of the random access method according to the embodiments of the present application.

Fig. 6 is a schematic structural diagram of a random access apparatus according to an embodiment of the present application, where the apparatus is applied to a base station side, and as shown in fig. 6, the apparatus includes:

a configuration unit 601, configured to configure configuration information of M downlink carriers and configuration information of N uplink carriers for a terminal, where M and N are positive integers;

a random access unit 602, configured to receive a first message on a first carrier and send a second message on a second carrier, where the second message includes uplink scheduling information for a third message, and the uplink scheduling information of the third message indicates that the third message is transmitted on the third carrier; wherein the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.

In an embodiment, the first indication information is used to indicate one or more carriers of the N uplink carriers.

In an embodiment, each set of the time domain resource configuration information configures one or more time domain resources.

In an embodiment, each set of the frequency domain resource allocation information is allocated with one or more frequency domain resources.

In an embodiment, the configuring unit 601 is configured to configure, through RRC dedicated signaling or system broadcast message, configuration information of M downlink carriers and configuration information of N uplink carriers for the terminal.

In one embodiment, the first message is MSG1 in a random access procedure.

In an embodiment, the second message is MSG2 in a random access procedure, or scheduling information for retransmission of MSG3 in a random access procedure.

In one embodiment, the third message is MSG3 in a random access procedure.

In an embodiment, the third carrier is an initially activated downlink BWP.

Fig. 7 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application. The communication device may be a terminal or a base station, and the communication device 600 shown in fig. 7 includes a processor 610, and the processor 610 may call and execute a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 7, the communication device 600 may further include a memory 620. From the memory 620, the processor 610 may call and run a computer program to implement the method in the embodiment of the present application.

The memory 620 may be a separate device from the processor 610, or may be integrated into the processor 610.

Optionally, as shown in fig. 7, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 630 may include a transmitter and a receiver, among others. The transceiver 630 may further include one or more antennas.

Optionally, the communication device 600 may specifically be a terminal or a base station in this embodiment, and the communication device 600 may implement a corresponding process implemented by the terminal or the base station in each method in this embodiment, which is not described herein again for brevity.

Optionally, the communication device 600 may specifically be a mobile terminal/terminal according to this embodiment, and the communication device 600 may implement a corresponding process implemented by the mobile terminal/terminal in each method according to this embodiment, which is not described herein again for brevity.

Fig. 8 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 700 shown in fig. 8 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 8, the chip 700 may further include a memory 720. From the memory 720, the processor 710 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 720 may be a separate device from the processor 710, or may be integrated into the processor 710.

Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.

Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

Optionally, the chip may be applied to a terminal or a base station in the embodiment of the present application, and the chip may implement a corresponding process implemented by the terminal or the base station in each method in the embodiment of the present application, and for brevity, no further description is given here.

Optionally, the chip may be applied to the mobile terminal/terminal in the embodiment of the present application, and the chip may implement a corresponding process implemented by the mobile terminal/terminal in each method in the embodiment of the present application, and for brevity, no further description is given here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.

Fig. 9 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. As shown in fig. 9, the communication system 900 includes a terminal 910 and a base station 920.

The terminal 910 may be configured to implement the corresponding functions implemented by the terminal in the foregoing methods, and the base station 920 may be configured to implement the corresponding functions implemented by the base station in the foregoing methods for brevity, which is not described herein again.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to a terminal or a base station in the embodiment of the present application, and the computer program enables a computer to execute corresponding processes implemented by the terminal or the base station in the methods in the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to a terminal or a base station in the embodiment of the present application, and the computer program instructions enable a computer to execute corresponding processes implemented by the terminal or the base station in the methods in the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the terminal or the base station in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute corresponding processes implemented by the terminal or the base station in the methods in the embodiment of the present application, and details are not described herein for brevity.

Optionally, the computer program may be applied to the mobile terminal/terminal in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal in each method in the embodiment of the present application, which is not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. 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.

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 ways. 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 through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to 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 exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to 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.

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

Claims

A random access method, the method comprising:

a terminal acquires configuration information of M downlink carriers and configuration information of N uplink carriers, wherein M and N are positive integers;

the terminal sends a first message on a first carrier wave and receives a second message on a second carrier wave, wherein the second message comprises uplink scheduling information of a third message, and the uplink scheduling information of the third message indicates that the third message is transmitted on the third carrier wave; wherein the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.
The method of claim 1, wherein the uplink scheduling information of the third message includes first indication information indicating a third carrier of the N uplink carriers on which the third message is transmitted.
The method of claim 2, wherein the method further comprises:

and if the first indication information indicates one carrier in the N uplink carriers, the terminal takes the carrier indicated by the first indication information as the third carrier for sending the third message, and sends the third message on the third carrier.
The method of claim 2 or 3, wherein the method further comprises:

if the first indication information indicates multiple carriers in the N uplink carriers, the terminal selects one carrier from the multiple carriers indicated by the first indication information as the third carrier for sending the third message, and sends the third message on the selected third carrier.
The method of claim 4, wherein the terminal selecting one carrier among the plurality of carriers indicated by the first indication information as the third carrier for transmitting the third message, comprises:

the terminal selects one carrier among the plurality of carriers indicated by the first indication information as the third carrier to transmit the third message based on a result of performing LBT.
The method according to any one of claims 2 to 5, wherein the uplink scheduling information of the third message includes second indication information, and the second indication information is used for indicating at least one set of time domain resource configuration information for transmitting the third message.
The method according to claim 6, wherein if the first indication information indicates multiple carriers of the N uplink carriers, the multiple carriers use the same time domain resource configuration information, or some of the multiple carriers use the same time domain resource configuration information, or all of the multiple carriers use different time domain resource configuration information.
The method according to claim 7, wherein each set of the time domain resource configuration information configures one or more time domain resources; the method further comprises the following steps:

and after the terminal determines to send the third carrier of the third message based on the first indication information, determining target time domain resource configuration information adopted by the third carrier based on the second indication information, and if one time domain resource is configured in the target time domain resource configuration information, the terminal takes the one time domain resource as a target time domain resource for sending the third message and sends the third message on the target time domain resource of the third carrier.
The method according to claim 7 or 8, wherein one or more time domain resources are configured in each set of the time domain resource configuration information; the method further comprises the following steps:

the terminal determines, based on the first indication information, target time domain resource configuration information adopted by the third carrier after determining to send the third carrier of the third message, and if multiple time domain resources are configured in the target time domain resource configuration information, the terminal selects one time domain resource from the multiple time domain resources as a target time domain resource for sending the third message, and sends the third message on the target time domain resource of the third carrier.
The method of claim 9, wherein the terminal selecting one of the plurality of time domain resources as a target time domain resource for transmitting the third message comprises:

the terminal selects one time domain resource from the plurality of time domain resources as a target time domain resource for sending the third message based on a result of performing LBT.
The method according to any one of claims 2 to 10, wherein the uplink scheduling information of the third message includes third indication information, and the third indication information is used for indicating at least one set of frequency domain resource configuration information for transmitting the third message.
The method of claim 11, wherein the frequency domain resource configuration information refers to frequency domain resource configuration information within a carrier.
The method according to claim 11 or 12, wherein if the first indication information indicates multiple carriers of the N uplink carriers, the multiple carriers employ the same frequency domain resource configuration information, or some of the multiple carriers employ the same frequency domain resource configuration information, or all of the multiple carriers employ different frequency domain resource configuration information.
The method according to claim 12 or 13, wherein one or more frequency domain resources are configured in each set of the frequency domain resource configuration information; the method further comprises the following steps:

and after the terminal determines to send the third carrier of the third message based on the first indication information, determining target frequency domain resource configuration information adopted by the third carrier based on the third indication information, and if one frequency domain resource is configured in the target frequency domain resource configuration information, the terminal takes the one frequency domain resource as a target frequency domain resource for sending the third message and sends the third message on the target frequency domain resource of the third carrier.
The method according to any one of claims 12 to 14, wherein one or more frequency domain resources are configured in each set of the frequency domain resource configuration information; the method further comprises the following steps:

the terminal determines, based on the first indication information, target frequency domain resource configuration information adopted by the third carrier after determining to send the third carrier of the third message, and if multiple frequency domain resources are configured in the target frequency domain resource configuration information, the terminal selects one frequency domain resource from the multiple frequency domain resources as a target frequency domain resource for sending the third message, and sends the third message on the target frequency domain resource of the third carrier.
The method of claim 15, wherein the terminal selecting one of the plurality of frequency domain resources as a target frequency domain resource for transmitting the third message comprises:

the terminal selects one frequency domain resource among the plurality of frequency domain resources as a target frequency domain resource for transmitting the third message based on a result of performing LBT.
The method according to any of claims 1 to 16, wherein the uplink scheduling information in the second message indicates that the maximum range of the frequency domain size of the scheduled resources when scheduling the third message on the third carrier is the bandwidth size of the third carrier, if the bandwidth size of the third carrier is equal to the bandwidth size of the first carrier.
The method according to any of claims 1 to 16, wherein, in a case that the bandwidth size of the third carrier is smaller than the bandwidth size of the first carrier, the uplink scheduling information in the second message indicates that the maximum range of the frequency domain size of the scheduled resource is the bandwidth size of the third bandwidth when the third message is scheduled on the third carrier.
The method according to any one of claims 1 to 16, wherein, in a case that the bandwidth size of the third carrier is larger than the bandwidth size of the first carrier, the uplink scheduling information in the second message indicates that, when the third message is scheduled on the third carrier, the maximum range of the frequency domain size of the scheduled resource includes:

the frequency domain range of the scheduled resource belongs to the frequency domain resource range of the third carrier with the smallest number RB starting number increasing and the bandwidth size not exceeding the bandwidth size of the first carrier; or

The frequency domain range of the scheduled resource belongs to the frequency domain resource range of the third carrier with the maximum number RB starting number decreasing and the bandwidth size not exceeding the bandwidth size of the first carrier; or

The frequency domain range of the scheduled resource belongs to the frequency domain resource range which takes the third carrier center as the center and the bandwidth size does not exceed the bandwidth size of the first carrier.
The method according to any one of claims 1 to 19, wherein the acquiring, by the terminal, the configuration of M downlink carriers and the configuration of N uplink carriers includes:

and the terminal acquires the configuration of the M downlink carriers and the configuration of the N uplink carriers through RRC (radio resource control) special signaling or system broadcast messages.
The method of any one of claims 1 to 20, wherein the first message is MSG1 in a random access procedure.
The method of any one of claims 1 to 21, wherein the second message is MSG2 in a random access procedure or scheduling information for retransmission of MSG3 in a random access procedure.
The method according to any of claims 1 to 22, wherein the second message is transmitted by means of DCI, or by means of MAC CE, or by means of RRC-specific signaling.
The method of any one of claims 1 to 23, wherein the third message is MSG3 in a random access procedure.
The method of any one of claims 1 to 24, wherein the third carrier and the first carrier are the same carrier; alternatively, the third carrier and the first carrier are different carriers.
The method according to any of claims 1 to 25, wherein the carrier is a bandwidth part BWP, or the carrier is a component carrier CC, or the carrier is a predefined subband.
The method of claim 26, wherein the first carrier and/or the second carrier and/or the third carrier have a same BWP identification ID, or CC ID, or predefined subband ID.
The method of claim 26, wherein the third carrier is an initially activated downlink BWP.
A random access method, the method comprising:

a base station configures configuration information of M downlink carriers and configuration information of N uplink carriers for a terminal, wherein M and N are positive integers;

the base station receives a first message on a first carrier and sends a second message on a second carrier, wherein the second message comprises uplink scheduling information of a third message, and the uplink scheduling information of the third message indicates that the third message is transmitted on the third carrier; wherein the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.
The method of claim 29, wherein the uplink scheduling information of the third message includes first indication information indicating a third carrier of the N uplink carriers on which the third message is transmitted.
The method of claim 30, wherein the first indication information indicates one or more of the N uplink carriers.
The method according to claim 30 or 31, wherein the uplink scheduling information of the third message includes second indication information indicating at least one set of time domain resource configuration information for transmitting the third message.
The method of claim 32, wherein if the first indication information indicates multiple carriers of the N uplink carriers, the multiple carriers use the same time domain resource configuration information, or a portion of the multiple carriers use the same time domain resource configuration information, or all of the multiple carriers use different time domain resource configuration information.
The method of claim 33, wherein each set of the time domain resource configuration information configures one or more time domain resources.
The method according to any one of claims 30 to 34, wherein the uplink scheduling information of the third message includes third indication information, and the third indication information is used for indicating at least one set of frequency domain resource configuration information for transmitting the third message.
The method of claim 35, wherein the frequency domain resource configuration information refers to frequency domain resource configuration information within a carrier.
The method according to claim 35 or 36, wherein if the first indication information indicates multiple carriers of the N uplink carriers, the multiple carriers employ the same frequency domain resource configuration information, or some of the multiple carriers employ the same frequency domain resource configuration information, or all of the multiple carriers employ different frequency domain resource configuration information.
The method of claim 36 or 37, wherein one or more frequency domain resources are configured in each set of the frequency domain resource configuration information.
The method according to any of claims 29 to 38, wherein the uplink scheduling information in the second message indicates that the maximum range of the frequency domain size of the scheduled resources when scheduling the third message on the third carrier is the bandwidth size of the third carrier, in case the bandwidth size of the third carrier is equal to the bandwidth size of the first carrier.
The method according to any of claims 29 to 38, wherein the uplink scheduling information in the second message indicates that the maximum range of the frequency domain size of the scheduled resources when scheduling the third message on the third carrier is the bandwidth size of the third bandwidth, in case the bandwidth size of the third carrier is smaller than the bandwidth size of the first carrier.
The method according to any of claims 29 to 38, wherein in a case that the bandwidth size of the third carrier is larger than the bandwidth size of the first carrier, the uplink scheduling information in the second message indicates that the maximum range of the frequency domain size of the scheduled resources when the third message is scheduled on the third carrier includes:

the frequency domain range of the scheduled resource belongs to the frequency domain resource range of the third carrier with the smallest number RB starting number increasing and the bandwidth size not exceeding the bandwidth size of the first carrier; or

The frequency domain range of the scheduled resource belongs to the frequency domain resource range of the third carrier with the maximum number RB starting number decreasing and the bandwidth size not exceeding the bandwidth size of the first carrier; or

The frequency domain range of the scheduled resource belongs to the frequency domain resource range which takes the third carrier center as the center and the bandwidth size does not exceed the bandwidth size of the first carrier.
The method according to any one of claims 29 to 41, wherein the configuring information of M downlink carriers and configuring information of N uplink carriers by the base station for the terminal includes:

and the base station configures the configuration information of M downlink carriers and the configuration information of N uplink carriers for the terminal through RRC (radio resource control) special signaling or system broadcast messages.
The method of any one of claims 29 to 42, wherein the first message is MSG1 in a random access procedure.
The method of any one of claims 29 to 43, wherein the second message is MSG2 in a random access procedure or scheduling information for retransmission of MSG3 in a random access procedure.
The method of any one of claims 29 to 44, wherein the second message is transmitted by means of DCI, or by means of MAC CE, or by means of RRC-specific signalling.
The method of any one of claims 29 to 45, wherein the third message is MSG3 in a random access procedure.
The method of any one of claims 29 to 46, wherein the third carrier and the first carrier are the same carrier; alternatively, the third carrier and the first carrier are different carriers.
The method of any one of claims 29 to 47, wherein the carrier is BWP, or the carrier is CC, or the carrier is a predefined subband.
The method of claim 48, wherein the first carrier and/or the second carrier and/or the third carrier have a same BWP ID, or a CC ID, or a predefined subband ID.
The method of claim 48, wherein the third carrier is an initially activated downlink BWP.
A random access apparatus, the apparatus comprising:

an obtaining unit, configured to obtain configuration information of M downlink carriers and configuration information of N uplink carriers, where M and N are positive integers;

a random access unit, configured to send a first message on a first carrier, and receive a second message on a second carrier, where the second message includes uplink scheduling information for a third message, and the uplink scheduling information of the third message indicates that the third message is transmitted on the third carrier; wherein the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.
The apparatus of claim 51, wherein the uplink scheduling information of the third message comprises first indication information indicating a third carrier of the N uplink carriers on which the third message is transmitted.
The apparatus of claim 52, wherein the random access unit is configured to:

and if the first indication information indicates one carrier in the N uplink carriers, taking the carrier indicated by the first indication information as the third carrier for sending the third message, and sending the third message on the third carrier.
The apparatus of claim 52 or 53, wherein the random access unit is configured to:

if the first indication information indicates multiple carriers in the N uplink carriers, selecting one carrier from the multiple carriers indicated by the first indication information as the third carrier for sending the third message, and sending the third message on the selected third carrier.
The apparatus of claim 54, wherein the random access unit is configured to select one carrier among the multiple carriers indicated by the first indication information as the third carrier for sending the third message based on a result of performing LBT.
The apparatus according to any one of claims 52 to 55, wherein the uplink scheduling information of the third message includes second indication information, and the second indication information is used to indicate at least one set of time domain resource configuration information for transmitting the third message.
The apparatus of claim 56, wherein if the first indication information indicates multiple carriers of the N uplink carriers, the multiple carriers employ the same time domain resource configuration information, or some of the multiple carriers employ the same time domain resource configuration information, or all of the multiple carriers employ different time domain resource configuration information.
The apparatus of claim 57, wherein each set of the time domain resource configuration information configures one or more time domain resources; the random access unit is configured to:

after the third carrier of the third message is determined to be sent based on the first indication information, target time domain resource configuration information adopted by the third carrier is determined based on the second indication information, if one time domain resource is configured in the target time domain resource configuration information, the one time domain resource is used as the target time domain resource for sending the third message, and the third message is sent on the target time domain resource of the third carrier.
The apparatus of claim 57 or 58, wherein each set of the time domain resource configuration information configures one or more time domain resources; the random access unit is configured to:

after the third carrier of the third message is determined to be sent based on the first indication information, target time domain resource configuration information adopted by the third carrier is determined based on the second indication information, if multiple time domain resources are configured in the target time domain resource configuration information, one time domain resource is selected from the multiple time domain resources to serve as a target time domain resource for sending the third message, and the third message is sent on the target time domain resource of the third carrier.
The apparatus of claim 59, wherein the random access unit is configured to select one of the plurality of time domain resources as a target time domain resource for transmitting the third message based on a result of performing LBT.
The apparatus according to any one of claims 52 to 60, wherein the uplink scheduling information of the third message includes third indication information, and the third indication information is used to indicate at least one set of frequency domain resource configuration information for transmitting the third message.
The apparatus of claim 61, wherein the frequency domain resource configuration information refers to frequency domain resource configuration information within a carrier.
The apparatus according to claim 61 or 62, wherein if the first indication information indicates multiple carriers of the N uplink carriers, the multiple carriers employ the same frequency domain resource configuration information, or some of the multiple carriers employ the same frequency domain resource configuration information, or all of the multiple carriers employ different frequency domain resource configuration information.
The apparatus of claim 62 or 63, wherein one or more frequency domain resources are configured in each set of the frequency domain resource configuration information; the random access unit is configured to:

after the third carrier of the third message is determined to be sent based on the first indication information, target frequency domain resource configuration information adopted by the third carrier is determined based on the third indication information, if one frequency domain resource is configured in the target frequency domain resource configuration information, the one frequency domain resource is used as a target frequency domain resource for sending the third message, and the third message is sent on the target frequency domain resource of the third carrier.
The apparatus according to any of claims 62 to 64, wherein each set of the frequency domain resource configuration information configures one or more frequency domain resources; the random access unit is configured to:

after the third carrier of the third message is determined to be sent based on the first indication information, target frequency domain resource configuration information adopted by the third carrier is determined based on the third indication information, if a plurality of frequency domain resources are configured in the target frequency domain resource configuration information, one frequency domain resource is selected from the plurality of frequency domain resources to serve as a target frequency domain resource for sending the third message, and the third message is sent on the target frequency domain resource of the third carrier.
The apparatus of claim 65, wherein the random access unit is configured to select one of the plurality of frequency domain resources as a target frequency domain resource for transmitting the third message based on a result of performing LBT.
The apparatus of any one of claims 51 to 66, wherein the uplink scheduling information in the second message indicates that a maximum range of frequency domain sizes of the scheduled resources when scheduling the third message on the third carrier is the bandwidth size of the third carrier, if the bandwidth size of the third carrier is equal to the bandwidth size of the first carrier.
The apparatus of any one of claims 51 to 66, wherein the uplink scheduling information in the second message indicates that a maximum range of frequency domain sizes of the scheduled resources when scheduling the third message on the third carrier is a bandwidth size of the third bandwidth, in the case that the bandwidth size of the third carrier is smaller than the bandwidth size of the first carrier.
The apparatus according to any one of claims 51 to 66, wherein, in a case that the bandwidth size of the third carrier is larger than the bandwidth size of the first carrier, the uplink scheduling information in the second message indicates that, when the third message is scheduled on the third carrier, a maximum range of frequency domain sizes of the scheduled resources includes:

the frequency domain range of the scheduled resource belongs to the frequency domain resource range of the third carrier with the smallest number RB starting number increasing and the bandwidth size not exceeding the bandwidth size of the first carrier; or

The frequency domain range of the scheduled resource belongs to the frequency domain resource range of the third carrier with the maximum number RB starting number decreasing and the bandwidth size not exceeding the bandwidth size of the first carrier; or

The frequency domain range of the scheduled resource belongs to the frequency domain resource range which takes the third carrier center as the center and the bandwidth size does not exceed the bandwidth size of the first carrier.
The apparatus of any one of claims 51 to 69, wherein the obtaining unit is configured to obtain the configurations of the M downlink carriers and the configurations of the N uplink carriers through RRC dedicated signaling or a system broadcast message.
The apparatus of any one of claims 51-70, wherein the first message is MSG1 in a random access procedure.
The apparatus of any one of claims 51 to 71, wherein the second message is MSG2 in a random access procedure or scheduling information for retransmission of MSG3 in a random access procedure.
The apparatus of any one of claims 51-72, wherein the second message is transmitted by way of DCI, or by way of MAC CE, or by way of RRC proprietary signaling.
The apparatus of any of claims 51-73, wherein the third message is MSG3 in a random access procedure.
The apparatus of any one of claims 51-74, wherein the third carrier and the first carrier are the same carrier; alternatively, the third carrier and the first carrier are different carriers.
The apparatus of any one of claims 51-75, wherein the carrier is BWP, or the carrier is CC, or the carrier is a predefined subband.
The apparatus of claim 76, wherein the first carrier and/or the second carrier and/or the third carrier have a same BWP ID, or a CC ID, or a predefined subband ID.
The apparatus of claim 76, wherein the third carrier is an initially activated downlink BWP.
A random access apparatus, the apparatus comprising:

a configuration unit, configured to configure configuration information of M downlink carriers and configuration information of N uplink carriers for a terminal, where M and N are positive integers;

a random access unit, configured to receive a first message on a first carrier and send a second message on a second carrier, where the second message includes uplink scheduling information for a third message, and the uplink scheduling information of the third message indicates that the third message is transmitted on the third carrier; wherein the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.
The apparatus of claim 79, wherein the uplink scheduling information of the third message comprises first indication information indicating a third carrier of the N uplink carriers on which the third message is transmitted.
The apparatus of claim 80, wherein the first indication information indicates one or more of the N uplink carriers.
The apparatus of claim 80 or 81, wherein the uplink scheduling information of the third message includes second indication information indicating at least one set of time domain resource configuration information for transmitting the third message.
The apparatus of claim 82, wherein if the first indication information indicates multiple carriers of the N uplink carriers, the multiple carriers employ the same time domain resource configuration information, or some of the multiple carriers employ the same time domain resource configuration information, or all of the multiple carriers employ different time domain resource configuration information.
The apparatus of claim 83, wherein each set of the time domain resource configuration information configures one or more time domain resources.
The apparatus of any one of claims 80 to 84, wherein the uplink scheduling information of the third message includes third indication information, and the third indication information is used to indicate at least one set of frequency domain resource configuration information for transmitting the third message.
The apparatus of claim 85, wherein the frequency domain resource configuration information refers to frequency domain resource configuration information within a carrier.
The apparatus of claim 85 or 86, wherein if the first indication information indicates multiple carriers of the N uplink carriers, the multiple carriers employ the same frequency-domain resource configuration information, or a portion of the multiple carriers employ the same frequency-domain resource configuration information, or all of the multiple carriers employ different frequency-domain resource configuration information.
The apparatus of claim 86 or 87, wherein one or more frequency domain resources are configured in each set of the frequency domain resource configuration information.
The apparatus of any one of claims 79 to 88, wherein the uplink scheduling information in the second message indicates that the maximum range of frequency domain sizes of the scheduled resources when scheduling the third message on the third carrier is the bandwidth size of the third carrier, if the bandwidth size of the third carrier is equal to the bandwidth size of the first carrier.
The apparatus of any one of claims 79 to 88, wherein the uplink scheduling information in the second message indicates that the maximum range of frequency domain sizes of the scheduled resources when scheduling the third message on the third carrier is the bandwidth size of the third bandwidth, in the case that the bandwidth size of the third carrier is smaller than the bandwidth size of the first carrier.
The apparatus of any one of claims 79 to 88, wherein the uplink scheduling information in the second message indicates a maximum range of frequency domain sizes of the scheduled resources when scheduling the third message on the third carrier in the case that the bandwidth size of the third carrier is larger than the bandwidth size of the first carrier comprises:

the frequency domain range of the scheduled resource belongs to the frequency domain resource range of the third carrier with the smallest number RB starting number increasing and the bandwidth size not exceeding the bandwidth size of the first carrier; or

The frequency domain range of the scheduled resource belongs to the frequency domain resource range of the third carrier with the maximum number RB starting number decreasing and the bandwidth size not exceeding the bandwidth size of the first carrier; or

The frequency domain range of the scheduled resource belongs to the frequency domain resource range which takes the third carrier center as the center and the bandwidth size does not exceed the bandwidth size of the first carrier.
The apparatus of any one of claims 79 to 91, wherein the configuration unit is configured to configure the configuration information of the M downlink carriers and the configuration information of the N uplink carriers for the terminal through RRC dedicated signaling or system broadcast message.
The apparatus of any one of claims 79 to 92, wherein the first message is MSG1 in a random access procedure.
The apparatus of any one of claims 79 to 93, wherein the second message is MSG2 in a random access procedure or scheduling information for retransmission of MSG3 in a random access procedure.
The apparatus of any one of claims 79 to 94, wherein the second message is transmitted by way of DCI, or by way of MAC CE, or by way of RRC proprietary signaling.
The apparatus of any one of claims 79 to 95, wherein the third message is MSG3 in a random access procedure.
The apparatus of any one of claims 79 to 96, wherein the third carrier and the first carrier are the same carrier; alternatively, the third carrier and the first carrier are different carriers.
The apparatus of any one of claims 79 to 97, wherein the carrier is BWP, or the carrier is CC, or the carrier is a predefined subband.
The apparatus of claim 98, wherein the first carrier and/or the second carrier and/or the third carrier have a same BWP ID, or CC ID, or a predefined subband ID.
The apparatus of claim 98, wherein the third carrier is an initially activated downlink BWP.
A terminal, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 28.
A base station, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 29 to 50.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 28.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 29 to 50.
A computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 28.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 29 to 50.
A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 1 to 28.
A computer program product comprising computer program instructions to cause a computer to perform the method of any of claims 29 to 50.
A computer program for causing a computer to perform the method of any one of claims 1 to 28.
A computer program for causing a computer to perform the method of any one of claims 29 to 50.