WO2020227907A1

WO2020227907A1 - Resource determination method and apparatus, and terminal

Info

Publication number: WO2020227907A1
Application number: PCT/CN2019/086721
Authority: WO
Inventors: 石聪
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-05-13
Filing date: 2019-05-13
Publication date: 2020-11-19
Also published as: CN112970219A; CN112970219B

Abstract

Provided are a resource determination method and apparatus, and a terminal. The method comprises: if a terminal fails in executing LBT on a transmission resource for a first message or a second message, and the transmission resource for the first message or the second message is located within a first frequency-domain range, the terminal selecting, within a second frequency-domain range, a transmission resource for re-transmitting the first message.

Description

Method, device and terminal for determining resource

Technical field

The embodiments of the application relate to the field of mobile communication technology, and in particular to a method and device for determining resources, and a terminal.

Background technique

In the New Radio-Unlicense (NR-U) system, the terminal needs to perform Listen Before Talk (LBT) to transmit uplink signals. In order to improve the transmission opportunity of msg3 in the random access process, the terminal can schedule multiple msg3 transmission opportunities through a random access response (Random Access Response, RAR), or configure multiple msg3 transmission opportunities in the time domain. If the execution of LBT fails on all msg3 transmission opportunities, the terminal immediately reselects the random access opportunity (RACH Occasion, RO) resource, and then sends msg1. However, when the terminal reselects the RO resource of msg1, it is possible that the LBT will still fail, which will cause the random access performance to decrease.

Summary of the invention

The embodiments of the present application provide a method and device for determining a resource, and a terminal.

The resource determination method provided by the embodiment of the application includes:

If the terminal fails to perform LBT on the transmission resource of the first message or the second message, and the transmission resource of the first message or the second message is in the first frequency domain, the terminal selects to retransmit the first message in the second frequency domain. A message transmission resource.

The resource determining device provided by the embodiment of the present application is applied to a terminal, and the device includes:

The resource selection unit is configured to select in the second frequency domain if the LBT execution fails on the transmission resource of the first message or the second message and the transmission resource of the first message or the second message is in the first frequency domain The transmission resource for retransmitting the first message.

The terminal provided in the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the aforementioned resource determination method.

The chip provided in the embodiment of the present application is used to implement the foregoing resource determination method.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the above-mentioned resource determination method.

The computer-readable storage medium provided by the embodiment of the present application is used to store a computer program, and the computer program enables a computer to execute the above-mentioned resource determination method.

The computer program product provided by the embodiment of the present application includes computer program instructions, and the computer program instructions cause a computer to execute the aforementioned resource determination method.

The computer program provided in the embodiment of the present application, when it runs on a computer, causes the computer to execute the aforementioned resource determination method.

Through the above technical solution, when the terminal initiates the transmission of the first message (such as msg1), the LBT execution fails based on the transmission resources of the last first message (such as msg1) or the second message (such as msg3), try to avoid LBT The failed resource is used to select the transmission resource of the first message (such as msg1), thereby increasing the probability of successful LBT execution on the transmission resource of the first message (such as msg1) and improving the random access performance.

Description of the drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The exemplary embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation of the application. In the attached picture:

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

Figure 2 is a flowchart of a four-step random access process provided by an embodiment of the present application;

Figure 3-1 is the first structural diagram of MAC PDU provided by an embodiment of this application;

Figure 3-2 is a structural diagram of the E/T/R/R/BI subheader provided by an embodiment of this application;

Figure 3-3 is a structural diagram of the E/T/RAPID subheader provided by an embodiment of the application;

Figure 3-4 is a structural diagram of MAC RAR provided by an embodiment of this application;

4 is a schematic flowchart of a method for determining a resource provided by an embodiment of the application;

FIG. 5 is a schematic diagram of RO resources provided by an embodiment of the application;

Figure 6 is a schematic diagram 1 of resource selection provided by an embodiment of this application;

FIG. 7 is a second schematic diagram of resource selection provided by an embodiment of this application;

FIG. 8 is a third schematic diagram of resource selection provided by an embodiment of this application;

FIG. 9 is a schematic diagram of the structural composition of a resource determining apparatus provided by an embodiment of the application;

FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a chip of an embodiment of the present application;

FIG. 12 is a schematic block diagram of a communication system provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The technical solutions of the embodiments of this application can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, and Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system or 5G system, etc.

Exemplarily, the 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 called a communication terminal or a terminal). The network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminals located in the coverage area. Optionally, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.

The communication system 100 also includes at least one terminal 120 located within the coverage area of the network device 110. The "terminal" used here includes, but is not limited to, connection via wired lines, such as public switched telephone networks (PSTN), digital subscriber lines (Digital Subscriber Line, DSL), digital cables, and direct cable connections; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM-FM Broadcast transmitter; and/or another terminal's device configured to receive/send communication signals; and/or Internet of Things (IoT) equipment. A terminal set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal" or a "mobile terminal". Examples of mobile terminals include, but are not limited to, satellites or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio phone transceivers Electronic device. Terminal can refer to access terminal, user equipment (User Equipment, UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user Device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in 5G networks, or terminals in the future evolution of PLMN, etc.

Optionally, the terminals 120 may perform device-to-device (D2D) communication.

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

FIG. 1 exemplarily shows one network device and two terminals. Optionally, the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminals. This embodiment of the present application There is no restriction on this.

Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.

It should be understood that the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices. 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 with communication functions, and the network device 110 and the terminal 120 may be the specific devices described above, which will not be repeated here; The device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.

It should be understood that the terms "system" and "network" in this article are often used interchangeably in this article. The term "and/or" in this article is only an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below.

Random access is an important process for the UE to establish a wireless connection with the network side. Through random access, it can obtain uplink synchronization with the base station and apply for uplink resources. The random access process is divided into a contention-based random access process and a non-competition-based random access process. Among them, the contention-based random access process includes a four-step random access process and a two-step random access process. Figure 2 shows the flow chart of the four-step random access process, as shown in Figure 2, the four-step random access process The process includes the following steps:

Step 201: The UE sends msg1 to the base station.

Here, the UE sending msg1 to the base station can be specifically implemented through the following process:

– The UE determines the relationship between the synchronization signal block (Synchronization Signal Block, SSB) and the physical random access channel (Physical Random Access Channel, PRACH) resources (configured by higher layers);

– The UE receives a set of SSBs and determines its Reference Signal Received Power (RSRP) value, and selects the appropriate SSB according to the threshold;

– The UE determines the PRACH resource based on the selected SSB and the corresponding relationship between the SSB and the PRACH resource;

– The UE sends the preamble on the PRACH time-frequency domain resources.

Step 202: The UE receives msg2 sent by the base station.

Here, the UE receiving the msg2 sent by the base station can be specifically implemented through the following process:

– After the UE sends msg1, it opens a RAR window and monitors the PDCCH during the operation of the window. The PDCCH is a PDCCH scrambled with RA-RNTI. RA-RNTI is related to the PRACH time-frequency resource selected by the UE. The calculation of RA-RNTI is as follows:

RA-RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id

Among them, s_id is the index of the first OFDM symbol of the PRACH resource (0≤s_id<14);

t_id is the index of the first time slot of the PRACH resource in the system frame (0≤t_id<80);

f_id is the index of PRACH opportunity in the frequency domain (0≤f_id<8);

ul_carrier_id is an uplink (Uplink, UL) carrier used for preamble index transmission.

After the UE successfully monitors the PDCCH scrambled by RA-RNTI, it can obtain the physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) scheduled by the PDCCH, which contains the media access control protocol data unit (Media Access Control) of msg2 and msg2. The data format of Protocol Data Unit (MAC PDU) is shown in Figure 3-1. MAC PDU includes multiple MAC subPDUs (MAC subPDU), namely MAC subPDU1, MAC subPDU2, MAC subPDU3 and so on. Among them, MAC subPDU1 includes Backoff Indication (BI), MAC subPDU1 includes E/T/R/R/BI subheader, and the structure of E/T/R/R/BI subheader is shown in Figure 3-2. MAC subPDU2 includes Random Access preamble ID (RAPID), MAC subPDU2 includes E/T/RAPID subheader, and the structure of E/T/RAPID subheader is shown in Figure 3-3. The remaining MAC subPDUs (such as MAC subPDU3) include RAPID and Random Access Response (RAR). Take MAC subPDU3 as an example. MAC subPDU3 includes E/T/RAPID subheader and MAC RAR, the structure of E/T/RAPID subheader As shown in Figure 3-3, the structure of MAC RAR is shown in Figure 3-4. The description of each information in Figure 3-2 to Figure 3-4 is as follows:

BI: fallback indication information, used to indicate the fallback time for retransmission of the first step message.

RAPID: The preamble index received in the network response.

R: stands for reserved bit area.

TAC: Timing Advance Command, used to adjust the uplink timing.

UL Grant: Uplink Grant, used to indicate resources for uplink transmission of Msg3.

TC-RNTI: Temporary cell RNTI (Temporary C-RNTI), used for the terminal to subsequently scramble the sent Msg3 message.

Step 203: The UE sends msg3 to the base station.

msg3 is mainly used to send UE ID to the network to resolve contention conflicts. For example, if it is an initial access random process, msg3 will carry an RRC layer message, that is, CCCH SDU, which contains the UE ID and a connection establishment request (RRCSetupRequest); if it is an RRC reestablishment, it will carry a reestablishment request (RRCRestablishmentRequest). ).

Step 204: The UE receives msg4 sent by the base station.

msg4 has two functions. The first is to resolve contention conflicts; the second is to transmit RRC configuration messages to the terminal. Whether to transmit the RRC configuration message depends on the triggering condition of the random access process and the scheduling strategy of the network side, and has nothing to do with the conflict resolution itself. Here, there are two ways to resolve competition conflicts:

Manner 1: If the UE carries a Cell-Radio Network Temporary Identifier (C-RNTI) in msg3, then msg4 is scheduled with the PDCCH scrambled by the C-RNTI. In other words, if the UE receives the C-RNTI scrambled PDCCH and its corresponding PDSCH, random access is completed.

Method 2: If the UE does not carry C-RNTI in msg3, such as initial access, msg4 uses TC-RNTI scrambled PDCCH scheduling; the conflict resolution is to receive the PDSCH of msg4 through the UE, and match the CCCH SDU in the PDSCH .

In NR-U, the upstream transmission needs to perform LBT first, and only when the LBT is successful, can the upstream transmission be performed. In order to reduce the impact of LBT on the transmission of msg1 and msg3, msg1 and msg3 will have multiple additional transmission opportunities. The UE will perform LBT on these transmission opportunities respectively. The UE can use one of the successful transmission opportunities of LBT to transmit msg1 or msg3.

For msg3 transmission, there are two possible ways to increase msg3 transmission opportunities as follows:

·The first method: Regardless of whether the UE performs LBT successfully, the UE must start ra-contentionResolutionTimer, the purpose of which is to allow the UE to receive the msg3 retransmission schedule sent by the network to the UE, thereby increasing the transmission opportunity;

·The second method: scheduling multiple available msg3 transmission opportunities for the UE through RAR, or configuring multiple msg3 repeated transmission opportunities in the time domain, the UE fails to perform LBT on all msg3 transmission opportunities, and the UE restarts immediately Random access resource selection, and then send msg1.

For the second method, there is a problem that the UE fails to perform LBT on all msg3 transmission opportunities. When the UE reselects the msg1 transmission opportunity, it is possible that the LBT will still fail, which will cause the random access performance to decrease. Therefore, a way to select msg1 resources needs to be considered. For this reason, the following technical solutions of the embodiments of the present application are proposed.

FIG. 4 is a schematic flowchart of a method for determining a resource provided by an embodiment of the application. As shown in FIG. 4, the method for determining a resource includes the following steps:

Step 401: The terminal fails to perform LBT on the transmission resource of the first message or the second message, and the transmission resource of the first message or the second message is in the first frequency domain, then the terminal selects in the second frequency domain The transmission resource for retransmitting the first message.

The technical solution of the embodiment of the present application is applied to a random access process, such as the four-step random access process shown in FIG. 2. In an embodiment of the present application, the first message is msg1, and the second message is msg3.

In the embodiment of the present application, the transmission resource may also be referred to as a transmission opportunity. The transmission resource (or transmission opportunity) of msg1 refers to the RO resource. The transmission resource (or transmission opportunity) of msg3 refers to the uplink resource or pre-configured uplink resource scheduled by RAR, for example: the base station schedules multiple msg3 transmission opportunities for the UE through RAR, or configures multiple msg3 repeated transmissions in the time domain opportunity. It should be noted that the transmission resources of msg1 and msg3 are both uplink transmission resources.

In the embodiment of the present application, after the terminal selects the transmission resource for retransmitting the first message, it performs LBT on the LBT subband where the transmission resource is located, and retransmits the first message through the transmission resource after the LBT is successful.

The following describes how to select the transmission resource of the first message in combination with different examples. It should be noted that the BWP mentioned in the following examples all refer to the uplink BWP. The terminal can configure one or more uplink BWPs on the current carrier. There may be one or more LBT subbands. The LBT subband is the smallest unit for the terminal to perform LBT in the frequency domain, and the terminal can independently perform LBT on multiple LBT subbands.

Optional example 1: The active uplink bandwidth part (Band Width Part, BWP) of the terminal is the first BWP, and the first BWP includes multiple LBT subbands; the terminal is in all of the first message or the second message LBT execution fails on transmission resources, and all transmission resources of the first message or the second message are located in part of the LBT subband of the first BWP, then the terminal removes the part of the LBT subband in the first BWP Select the transmission resource for retransmitting the first message in the other LBT subbands.

There are multiple LBT subbands on the uplink BWP (that is, the first BWP) currently activated by the terminal, and each LBT subband is, for example, 20 MHz. Before sending msg1, the terminal first selects SSB, RO resource and preamble. RO resources can be configured on multiple LBT subbands of an uplink BWP. As shown in Figure 5, the currently activated uplink BWP of the terminal has two LBT subbands, namely LBT subband 1 and LBT subband 2, and each LBT Four RO resources are configured on the subband. When the terminal selects RO resources, it can randomly select an RO resource on each LBT subband, and then perform LBT on the LBT subband where the selected RO resource is located, and the terminal selects the RO on the LBT subband where the LBT is successful The resource sends msg1. If multiple LBT subbands all succeed in LBT, the terminal randomly selects an RO resource on one LBT subband to send msg1. For example: referring to Figure 5, the terminal randomly selects RO6 resources on LBT subband 1, and randomly selects RO1 resources on LBT subband 2, and the terminal performs operations on LBT subband 1 where RO6 resources are located and LBT subband 2 where RO1 resources are located. LBT, assuming that LBT is successfully executed on LBT subband 2, the terminal sends msg1 through RO1 resources on LBT subband 2. If LBT is successfully executed on both LBT subband 1 and LBT subband 2, then the terminal randomly selects the LBT subband. The RO6 resource on band 1 sends msg1. In the above process, when the terminal selects the RO resource, it randomly selects an RO resource on each LBT subband. In the embodiment of this application, when the terminal selects the RO resource, it is not always on every LBT subband. To select RO resources, specifically:

●If msg1 has been sent for the random access procedure before msg1 transmission, in the last msg3 transmission, the terminal failed to perform LBT on all msg3 transmission resources, and all msg3 transmission resources were scheduled on the uplink BWP On an LBT subband, when the terminal selects the RO resource of msg1, it does not select the RO resource on this LBT subband. For example: referring to Figure 5, if all msg3 transmission resources are on LBT subband 2, and the terminal fails to perform LBT for all msg3 transmission resources on LBT subband 2, the terminal selects the RO resource on LBT subband 1.

●If msg1 has been sent for the random access procedure before msg1 transmission, in the last msg3 transmission, the terminal failed to perform LBT on all msg3 transmission resources, and all msg3 transmission resources were scheduled on the uplink BWP On multiple LBT subbands (the multiple LBT subbands are part of the LBT subbands of the uplink BWP), the terminal does not select the RO resources on these LBT subbands when selecting the RO resources of msg1. For example: suppose that the currently activated uplink BWP of the terminal has 4 LBT subbands, if the transmission resources of msg3 are on LBT subband 2 and subband 3, and the terminal is on LBT subband 2 and subband 3 for all msg3 transmission resources If performing LBT fails, the terminal selects RO resources on LBT subband 1 and LBT subband 4. If the transmission resources of msg3 are on

LBT subbands

1, 2, 3 and 4, and the terminal fails to perform LBT for all transmission resources of msg3 on

LBT subbands

1, 2, 3 and 4, the terminal can choose Another BWP or uplink carrier configured with msg1 transmission resources.

●If msg1 has already been sent for this random access procedure before msg1 transmission, in the last msg1 transmission, the terminal failed to perform LBT on all msg1 RO resources, and all msg1 RO resources are located in an LBT sub of the uplink BWP. Bring it on, when the terminal selects the RO resource of msg1, it does not select the RO resource on this LBT subband.

●If msg1 has been sent for this random access process before msg1 transmission, in the last msg1 transmission, the terminal failed to perform LBT on all msg1 RO resources, and all msg1 RO resources are located in multiple LBTs of the uplink BWP On the subband (multiple LBT subbands are part of the LBT subband of the uplink BWP), the terminal does not select the RO resources on these LBT subbands when selecting the RO resource of msg1.

Further, when selecting RO resources, the terminal may consider the mapping relationship between SSB and RO resources, specifically:

●For the case where one SSB maps multiple RO resources: 1) The terminal selects an SSB that meets the threshold. If multiple RO resources mapped by the SSB are distributed in different LBT subbands, the terminal can randomly select each LBT subband Select an RO; or, 2) the terminal selects multiple SSBs that meet the threshold, and the RO resources mapped by these SSBs are distributed on different LBT subbands; the terminal randomly selects an RO from each SSB.

●For multiple SSBs mapping one RO resource: the terminal selects multiple SSBs, so that the RO resources mapped by these selected SSBs are distributed on different LBT subbands, and the terminal can randomly select an RO resource on each LBT subband .

Optional example 2: The activated uplink BWP of the terminal is the first BWP, and the first BWP includes one or more LBT subbands; the terminal fails to perform LBT on all transmission resources of the first message or the second message If all transmission resources of the first message or the second message are located in all LBT subbands of the first BWP, the terminal selects the transmission resource for retransmitting the first message on the second BWP. Here, the transmission resource of the first message is configured on the second BWP.

There are one or more LBT subbands on the uplink BWP (that is, the first BWP) currently activated by the terminal, and each LBT subband is, for example, 20 MHz. The terminal first selects multiple uplink BWPs before sending msg1. When the terminal selects RO resources to send msg1, it can perform LBT on multiple uplink BWPs, and the terminal selects the uplink BWPs with successful LBT to send msg1, and these uplink BWPs are configured with RO resources. In the embodiment of this application, when the terminal selects the RO resource, it does not select the RO resource on each uplink BWP, specifically:

●If msg1 has been sent for this random access procedure before msg1 transmission, and in the last msg3 transmission, the terminal fails to perform LBT on all msg3 transmission resources, and all msg3 transmission resources are scheduled in one of them On the uplink BWP, when the terminal selects the RO resource of msg1, it does not select the RO resource on the uplink BWP. For example: referring to Figure 6, if all msg3 transmission resources are on the currently activated uplink BWP1, and the terminal fails to perform LBT on all msg3 transmission opportunities on the uplink BWP1, the terminal can switch to another when resending msg1 The RO resource of msg1 is selected on the uplink BWP2, and if the LBT is successful on the uplink BWP2, msg1 is transmitted through the RO resource on the uplink BWP2.

Optional example 3: The activated uplink BWP of the terminal is the first BWP, and the first BWP includes one or more LBT subbands; the terminal fails to perform LBT on all transmission resources of the first message or the second message , All transmission resources of the first message or the second message are located in all LBT subbands of the first BWP, and the first BWP is located in the first carrier of the first serving cell, then the terminal is in the first The transmission resource for retransmitting the first message is selected on the second carrier of the serving cell. Here, the transmission resource of the first message is configured on the second carrier.

There are one or more LBT subbands on the uplink BWP (that is, the first BWP) currently activated by the terminal, and each LBT subband is, for example, 20 MHz. Before sending msg1, the terminal first selects multiple uplink carriers (for example, supplementary uplink (SUL) carrier, normal uplink (NUL) carrier). When the terminal selects RO resources to send msg1, it can perform LBT on multiple uplink carriers. The terminal selects the uplink carriers with successful LBT to send msg1, and these uplink carriers are configured with RO resources. In the embodiment of this application, when the terminal selects the RO resource, it does not select the RO resource on each uplink carrier, specifically:

●If msg1 has been sent for this random access procedure before msg1 transmission, and in the last msg3 transmission, the terminal fails to perform LBT on all msg3 transmission resources, and all msg3 transmission resources are scheduled in one of them On the uplink BWP, if the uplink BWP is located on the NUL carrier (that is, the first carrier) of the serving cell, the terminal does not select the RO resource on the uplink BWP when selecting the RO resource of msg1. For example: referring to Figure 7, if all msg3 transmission resources are on the currently activated uplink BWP1, and the terminal fails to perform LBT on all msg3 transmission opportunities on the uplink BWP1, the terminal can switch to the same one when resending msg1 The RO resource of msg1 is selected on the SUL carrier of the serving cell (that is, the second carrier), and if the LBT is successful on the SUL carrier, msg1 is transmitted through the RO resource on the SUL carrier.

Optional example 4: The activated uplink BWP of the terminal is the first BWP, and the first BWP includes one or more LBT subbands; the terminal fails to perform LBT on all transmission resources of the first message or the second message If all transmission resources of the first message or the second message are located in all LBT subbands of the first BWP, and the first BWP is located in the first serving cell, the terminal selects to retransmit on the second serving cell The transmission resource of the first message. Here, the BWP of the second serving cell is configured with transmission resources of the first message.

There are one or more LBT subbands on the uplink BWP (that is, the first BWP) currently activated by the terminal, and each LBT subband is, for example, 20 MHz. Before sending msg1, the terminal first selects multiple uplink BWP or uplink carriers (for example, supplementary uplink (SUL) carrier, normal uplink (NUL) carrier). When the terminal selects RO resources to send msg1, it can perform LBT on multiple uplink BWPs or uplink carriers. The terminal selects the uplink BWP or uplink carrier with successful LBT to send msg1. These uplink BWPs or uplink carriers are configured with RO resources. In the embodiment of this application, when the terminal selects RO resources, it does not select RO resources on each uplink BWP or uplink carrier. Specifically:

●If msg1 has been sent for this random access procedure before msg1 transmission, and in the last msg3 transmission, the terminal fails to perform LBT on all msg3 transmission resources, and all msg3 transmission resources are scheduled in one of them On the uplink BWP, if the uplink BWP is located in serving cell 1, the terminal does not select the RO resource on the uplink BWP when selecting the RO resource of msg1. For example: referring to Figure 8, if all msg3 transmission resources are on the currently activated uplink BWP1, and the terminal fails to perform LBT on all msg3 transmission opportunities on the uplink BWP1, the terminal can switch to another when resending msg1 The RO resource of msg1 is selected on the serving cell 2, and if the LBT on the serving cell 2 is successful, msg1 is transmitted through the RO resource on the serving cell 2.

FIG. 9 is a schematic diagram of the structural composition of a resource determining apparatus provided by an embodiment of the application. As shown in FIG. 9, the resource determining apparatus includes:

The resource selection unit 901 is configured to perform LBT failure on the transmission resource of the first message or the second message, and the transmission resource of the first message or the second message is in the first frequency domain, and then in the second frequency domain. Select the transmission resource for retransmission of the first message.

In an embodiment, the activated uplink BWP of the terminal is a first BWP, and the first BWP includes multiple LBT subbands;

The resource selection unit 901 is configured to, if the LBT execution fails on all the transmission resources of the first message or the second message, all the transmission resources of the first message or the second message are located in a part of the LBT subsection of the first BWP. In the first BWP, the transmission resource for retransmitting the first message is selected in the LBT subbands other than the partial LBT subbands.

In an embodiment, the activated uplink BWP of the terminal is a first BWP, and the first BWP includes one or more LBT subbands;

The resource selection unit 901 is configured to, if the LBT execution fails on all the transmission resources of the first message or the second message, all the transmission resources of the first message or the second message are located in all the LBT subsections of the first BWP. Band, the transmission resource for retransmitting the first message is selected on the second BWP.

In an embodiment, the transmission resource of the first message is configured on the second BWP.

The resource selection unit 901 is configured to, if the LBT execution fails on all the transmission resources of the first message or the second message, all the transmission resources of the first message or the second message are located in all the LBT subsections of the first BWP. If the first BWP is located on the first carrier of the first serving cell, the transmission resource for retransmitting the first message is selected on the second carrier of the first serving cell.

In an implementation manner, the transmission resource of the first message is configured on the second carrier.

The resource selection unit 901 is configured to, if the LBT execution fails on all the transmission resources of the first message or the second message, all the transmission resources of the first message or the second message are located in all the LBT subsections of the first BWP. If the first BWP is located in the first serving cell, the transmission resource for retransmitting the first message is selected on the second serving cell.

In an embodiment, the BWP of the second serving cell is configured with transmission resources of the first message.

In an embodiment, the device further includes:

The transmission unit 902 is configured to perform LBT on the LBT subband where the transmission resource is located after the resource selection unit selects the transmission resource for retransmitting the first message, and retransmit the first message through the transmission resource after the LBT is successful.

Those skilled in the art should understand that the relevant description of the foregoing resource determining apparatus in the embodiment of the present application can be understood with reference to the relevant description of the resource determining method in the embodiment of the present application.

FIG. 10 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. The communication device 600 shown in FIG. 10 includes a processor 610, and the processor 610 may call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 10, the communication device 600 may further include a memory 620. The processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.

The memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.

Optionally, as shown in FIG. 10, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.

The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 600 may specifically be a network device in an embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, details are not repeated here. .

Optionally, the communication device 600 may specifically be a mobile terminal/terminal according to an embodiment of the application, and the communication device 600 may implement the corresponding procedures implemented by the mobile terminal/terminal in each method of the embodiments of the application. For the sake of brevity, This will not be repeated here.

FIG. 11 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 700 shown in FIG. 11 includes a processor 710, and the processor 710 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 11, the chip 700 may further include a memory 720. Wherein, the processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment of the present application.

The memory 720 may be a separate device independent of the processor 710, or may be integrated in 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 specifically, may obtain information or data sent by other devices or chips.

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

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in the various methods of the embodiment of the present application. For brevity, details are not described herein again.

Optionally, the chip can be applied to the mobile terminal/terminal in the embodiments of the present application, and the chip can implement the corresponding procedures implemented by the mobile terminal/terminal in the various methods of the embodiments of the present application. Repeat.

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

FIG. 12 is a schematic block diagram of a communication system 900 according to an embodiment of the present application. As shown in FIG. 12, the communication system 900 includes a terminal 910 and a network device 920.

Wherein, the terminal 910 may be used to implement the corresponding functions implemented by the terminal in the foregoing method, and the network device 920 may be used to implement the corresponding functions implemented by the network device in the foregoing method. For brevity, details are not described herein again.

It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM) ) And Direct Rambus RAM (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

It should be understood that the foregoing memory is exemplary but not restrictive. For example, the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiment of the present application is intended to include but not limited to these and any other suitable types of memory.

The embodiment of the present application also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the mobile terminal/terminal in the various methods of the embodiments of the present application, for It's concise, so I won't repeat it here.

The embodiments of the present application also provide a computer program product, including computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, it is not here. Repeat it again.

Optionally, the computer program product can be applied to the mobile terminal/terminal in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding procedures implemented by the mobile terminal/terminal in the various methods of the embodiments of the present application, for the sake of brevity , I won’t repeat it here.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiment of the present application. When the computer program runs on the computer, the computer is caused to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity , I won’t repeat it here.

Optionally, the computer program can be applied to the mobile terminal/terminal in the embodiments of the present application. When the computer program runs on the computer, the computer can execute the corresponding methods implemented by the mobile terminal/terminal in the various methods of the embodiments of the present application. For the sake of brevity, the process will not be repeated here.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

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

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A method for determining resources, the method includes:

If the terminal fails to perform LBT on the transmission resource of the first message or the second message, and the transmission resource of the first message or the second message is in the first frequency domain, the terminal selects to retransmit the first message in the second frequency domain. A message transmission resource.
The method according to claim 1, wherein the activated uplink BWP of the terminal is a first BWP, and the first BWP includes multiple LBT subbands;

If the terminal fails to perform LBT on the transmission resources of the first message or the second message, and the transmission resources of the first message or the second message are located in the first frequency domain, the terminal selects the repetition in the second frequency domain. The transmission resources for transmitting the first message include:

If the terminal fails to perform LBT on all the transmission resources of the first message or the second message, and all the transmission resources of the first message or the second message are located in part of the LBT subband of the first BWP, the terminal is Select a transmission resource for retransmitting the first message in the LBT subbands other than the partial LBT subbands in the first BWP.
The method according to claim 1, wherein the activated uplink BWP of the terminal is a first BWP, and the first BWP includes one or more LBT subbands;

If the terminal fails to perform LBT on the transmission resource of the first message or the second message, and the transmission resource of the first message or the second message is located in the first frequency domain, the terminal selects the repetition in the second frequency domain. The transmission resources for transmitting the first message include:

If the terminal fails to perform LBT on all the transmission resources of the first message or the second message, and all the transmission resources of the first message or the second message are located in all LBT subbands of the first BWP, the terminal is The transmission resource for retransmitting the first message is selected on the second BWP.
The method according to claim 3, wherein the transmission resource of the first message is configured on the second BWP.
The method according to claim 1, wherein the activated uplink BWP of the terminal is a first BWP, and the first BWP includes one or more LBT subbands;

If the terminal fails to perform LBT on the transmission resource of the first message or the second message, and the transmission resource of the first message or the second message is located in the first frequency domain, the terminal selects the repetition in the second frequency domain. The transmission resources for transmitting the first message include:

The terminal fails to perform LBT on all transmission resources of the first message or the second message, all transmission resources of the first message or the second message are located in all LBT subbands of the first BWP, and the first BWP If the first carrier is located in the first serving cell, the terminal selects the transmission resource for retransmitting the first message on the second carrier of the first serving cell.
The method according to claim 5, wherein the transmission resource of the first message is configured on the second carrier.
The method according to claim 1, wherein the activated uplink BWP of the terminal is a first BWP, and the first BWP includes one or more LBT subbands;

If the terminal fails to perform LBT on the transmission resource of the first message or the second message, and the transmission resource of the first message or the second message is located in the first frequency domain, the terminal selects the second frequency domain. The transmission resources for transmitting the first message include:

The terminal fails to perform LBT on all transmission resources of the first message or the second message, all transmission resources of the first message or the second message are located in all LBT subbands of the first BWP, and the first BWP Located in the first serving cell, the terminal selects the transmission resource for retransmitting the first message on the second serving cell.
The method according to claim 7, wherein the BWP of the second serving cell is configured with transmission resources of the first message.
The method according to any one of claims 1 to 8, wherein the method further comprises:

After selecting the transmission resource for retransmitting the first message, the terminal performs LBT on the LBT subband where the transmission resource is located, and retransmits the first message through the transmission resource after the LBT is successful.
A device for determining a resource is applied to a terminal, and the device includes:

The resource selection unit is configured to select in the second frequency domain if the LBT execution fails on the transmission resource of the first message or the second message and the transmission resource of the first message or the second message is in the first frequency domain The transmission resource for retransmitting the first message.
The apparatus according to claim 10, wherein the activated uplink BWP of the terminal is a first BWP, and the first BWP includes multiple LBT subbands;

The resource selection unit is configured to, if performing LBT on all transmission resources of the first message or the second message fails, all the transmission resources of the first message or the second message are located in a part of the LBT subband of the first BWP , The transmission resource for retransmitting the first message is selected in the LBT subbands other than the partial LBT subbands in the first BWP.
The apparatus according to claim 10, wherein the activated uplink BWP of the terminal is a first BWP, and the first BWP includes one or more LBT subbands;

The resource selection unit is configured to, if the LBT execution fails on all the transmission resources of the first message or the second message, all the transmission resources of the first message or the second message are located in all the LBT subbands of the first BWP , The transmission resource for retransmitting the first message is selected on the second BWP.
The apparatus according to claim 12, wherein the second BWP is configured with transmission resources of the first message.
The apparatus according to claim 10, wherein the activated uplink BWP of the terminal is a first BWP, and the first BWP includes one or more LBT subbands;

The resource selection unit is configured to perform LBT on all transmission resources of the first message or the second message and all transmission resources of the first message or the second message are located in all LBT subbands of the first BWP If the first BWP is located on the first carrier of the first serving cell, the transmission resource for retransmitting the first message is selected on the second carrier of the first serving cell.
The apparatus according to claim 14, wherein the transmission resource of the first message is configured on the second carrier.
The apparatus according to claim 10, wherein the activated uplink BWP of the terminal is a first BWP, and the first BWP includes one or more LBT subbands;

The resource selection unit is configured to, if the LBT execution fails on all the transmission resources of the first message or the second message, all the transmission resources of the first message or the second message are located in all the LBT subbands of the first BWP If the first BWP is located in the first serving cell, the transmission resource for retransmitting the first message is selected on the second serving cell.
The apparatus according to claim 16, wherein a transmission resource of the first message is configured on the BWP of the second serving cell.
The device according to any one of claims 10 to 17, wherein the device further comprises:

The transmission unit is configured to perform LBT on the LBT subband where the transmission resource is located after the resource selection unit selects the transmission resource for retransmitting the first message, and retransmit the first message through the transmission resource after the LBT is successful.
A terminal comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute the computer program according to any one of claims 1 to 9 method.
A chip comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 9.
A computer-readable storage medium for storing a computer program that enables a computer to execute the method according to any one of claims 1 to 9.
A computer program product, comprising computer program instructions that cause a computer to execute the method according to any one of claims 1 to 9.
A computer program that causes a computer to execute the method according to any one of claims 1 to 9.