WO2021093431A1

WO2021093431A1 - Data transmission method and apparatus, data receiving method and apparatus for ue in disconnected state, terminal, and base station

Info

Publication number: WO2021093431A1
Application number: PCT/CN2020/114149
Authority: WO
Inventors: 徐敏
Original assignee: 展讯通信（上海）有限公司
Priority date: 2019-11-15
Filing date: 2020-09-09
Publication date: 2021-05-20
Also published as: CN110856276B; CN110856276A

Abstract

A data transmission method and apparatus, a data receiving method and apparatus for a UE in a disconnected state, a terminal, and a base station. The data transmission method comprises: receiving pre-configuration information; and according to the pre-configuration information, using a public resource to transmit a data packet to be transmitted. The technical problem provided by the present invention can reduce the data transmission delay of the UE in the disconnected state.

Description

Data transmission and receiving method and device, terminal and base station of unconnected UE

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201911121706.2, and the invention title is "Unconnected UE data transmission and reception methods and devices, terminals, and base stations" on November 15, 2019. The entire content is incorporated into this application by reference.

Technical field

The present invention relates to the field of communication technology, and in particular to methods and devices, terminals, and base stations for data transmission and reception of a non-connected UE.

Background technique

In the 3rd Generation Partnership Project (3GPP) New Radio (NR) communication system, the air interface of the User Equipment (UE) has three states: Radio Resource Control (Radio) Resource Control, RRC for short) idle state (IDLE), RRC inactive (INACTIVE) state and RRC connected (CONNECTED) state.

The UE in the RRC idle state is not connected to the base station (gNB), and only needs to periodically initiate location update, cell selection and reselection procedures, and receive paging. The RRC connection state is connected to the network. The network will configure the UE radio bearer (Radio Bearer, referred to as RB) and physical layer, etc., as well as dual connection (Dual Connection, referred to as DC) operations, carrier aggregation (Carrier Aggregation, referred to as CA) operations and Multi-RAT Dual Connectivity (MR-DC for short, refers to the operation of dual-connection transmission through different wireless access technologies) multi-cell operation. Among them, the DC operation can be divided into a same frequency scenario and a different frequency scenario, which are controlled by different base stations in at least two cells. CA operation is controlled by a single base station in a single cell. The network can perform uplink and downlink data scheduling for UEs in the RRC connected state.

The UE in the RRC inactive state does not need to notify the base station when moving within the RAN-based Notification Area (RNA) of a radio access network (Radio Access Network, RAN for short), and the UE retains some configurations. Currently, the UE in the RRC inactive state can retain the configuration of the Packet Data Convergence Protocol (PDCP) layer or the Service Data Adaptation Protocol (SDAP) and the original serving cell primary cell (Primary). Some low-layer configurations of the Cell (PCell for short), but the low-layer secondary cell group (Secondary Cell Group, SCG for short) configuration will not be retained. At this time, if the network needs to schedule the UE or the UE has data to send, it needs to migrate to the RRC connected state and restore the reserved configuration for data transmission.

In the prior art, if a UE in a disconnected state needs to initiate data transmission, it usually needs to perform a random access process to migrate from the disconnected state to the connected state. The state transition time is longer, which may prolong the data of the disconnected UE. Transmission delay needs to be improved.

Summary of the invention

The technical problem solved by the present invention is how to reduce the data transmission delay of a non-connected UE.

In order to solve the foregoing technical problems, an embodiment of the present invention provides a data transmission method for a disconnected UE, which includes: receiving pre-configuration information; and using common resources to transmit data packets to be transmitted according to the pre-configuration information.

Optionally, the pre-configuration information is used to indicate that the network allows the UE to transmit the data packet to be transmitted based on the common resource.

Optionally, the pre-configuration information includes one or more of the following: a preset threshold for data delay; a preset threshold for network load; service information; a fallback instruction, where the fallback instruction is used to indicate that the network allows the UE The common resource is used to transmit the data packet to be transmitted, and/or used to indicate the maximum number of times that the network allows the UE to transmit the data packet to be transmitted using the common resource.

Optionally, the service information includes one or more of the following: logical channel identification; radio bearer identification; access type identification; access identification.

Optionally, the maximum number of times is greater than 1, and the data transmission method further includes: if the transmission of the to-be-transmitted data packet fails based on the common resource, judging whether the pre-configured resource is available; when the pre-configured resource is unavailable And when the number of times of using the common resource to transmit the data packet to be transmitted is less than the maximum number of times, continue to transmit the data packet to be transmitted based on the common resource.

Optionally, the data transmission method further includes: when the pre-configured resource is available, using the pre-configured resource to transmit the to-be-transmitted data packet.

Optionally, the receiving pre-configuration information includes: receiving the pre-configuration information based on an RRC connection release message and/or system information.

Optionally, the data transmission method further includes: if cell reselection is performed from the serving cell to a preset specific cell, when the pre-configuration information in the RRC connection release message and the pre-configuration in the system information When the information is different, the system information of the preset specific cell is used as a reference; wherein, the preset specific cell refers to a cell other than the serving cell, and the UE in the preset specific cell can use The pre-configured resources.

Optionally, the using common resources to transmit the data packet to be transmitted includes: determining whether the next pre-configured resource used to send the data packet to be transmitted meets a preset service requirement; if the preset service requirement is not met, then Transmitting the data packet to be transmitted based on the common resource.

Optionally, the transmitting the data packet to be transmitted based on the common resource includes: if the BWP to which the pre-configured resource belongs does not have the common resource, switching to the uplink initial bandwidth or the network pre-configured bandwidth, and use The data packet to be transmitted is transmitted by the common resource of the initial uplink bandwidth or the bandwidth pre-configured by the network.

Optionally, before using public resources to transmit the data packet to be transmitted, the data transmission method further includes: when the data packet to be transmitted is available, performing measurement or performing listening-and-speaking in an unlicensed frequency band or not transmitting in a measurement gap The data packet to be transmitted.

Optionally, the common resources include one or more of the following: two-step RACH resources, advance data transmission resources, four-step RACH resources, and contention-based uplink transmission resources.

In order to solve the above technical problem, an embodiment of the present invention also provides a data receiving method for a non-connected UE, which includes: sending pre-configuration information; and receiving a data packet to be transmitted that is transmitted using a common resource.

Optionally, the sending the pre-configuration information includes: sending the pre-configuration information based on the RRC connection release message and/or system information.

In order to solve the above technical problems, an embodiment of the present invention also provides a data transmission device for a disconnected UE, including: a receiving module for receiving pre-configuration information; a transmission module for using common resources according to the pre-configuration information Transmit the data packet to be transmitted.

To solve the above technical problems, an embodiment of the present invention also provides a data receiving device for a disconnected UE, which includes: a sending module for sending pre-configured information; a receiving module for receiving data packets to be transmitted that are transmitted using common resources .

In order to solve the above technical problem, an embodiment of the present invention further provides a storage medium having computer instructions stored thereon, and the computer instructions execute the steps of the above method when the computer instructions are executed.

To solve the above technical problem, an embodiment of the present invention also provides a terminal, including a memory and a processor, the memory stores computer instructions that can run on the processor, and when the processor runs the computer instructions Perform the steps of the above method.

To solve the above technical problem, an embodiment of the present invention also provides a base station, including a memory and a processor, the memory stores computer instructions that can run on the processor, and when the processor runs the computer instructions Perform the steps of the above method.

Compared with the prior art, the technical solutions of the embodiments of the present invention have the following beneficial effects:

The embodiment of the present invention provides a data transmission method for a non-connected UE, including: receiving pre-configuration information; and using common resources to transmit data packets to be transmitted according to the pre-configuration information. The embodiment of the present invention provides a non-connected UE that can use pre-configured resources for data transmission to provide a technical solution for using common resources to transmit data packets to be transmitted, so that the UE has the opportunity to use the common resources and can reduce the time caused by state transition. Delay, save the state transition time from the non-connected state to the connected state, which is beneficial to ensure the UE service transmission demand and improve the data transmission efficiency.

Further, the pre-configuration information is used to indicate that the network allows the UE to transmit the data packet to be transmitted based on the common resource. In the embodiment of the present invention, the pre-configuration information is issued by the base station, so that the UE in the disconnected state has the opportunity to use common resources to transmit data, and further provides more data transmission opportunities for the disconnected UE, which is beneficial to improve the data transmission efficiency.

Further, the using common resources to transmit the data packet to be transmitted includes: judging whether the next pre-configured resource used to send the data packet to be transmitted meets a preset service requirement; if the preset service requirement is not met, based on all The public resource transmits the data packet to be transmitted. The embodiment of the present invention allows non-connected UEs to use common resources to transmit data under the premise that the pre-configured resources do not meet the preset service requirements, thereby further saving time delay for the non-connected UEs and increasing the data transmission rate.

Description of the drawings

Fig. 1 is a schematic diagram of a flow of random access in the prior art;

Fig. 2 is a schematic diagram of another random access process in the prior art;

FIG. 3 is a schematic flowchart of another random access process in the prior art;

4 is a schematic flowchart of a data transmission method for a non-connected UE according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart of a data receiving method for a non-connected UE according to an embodiment of the present invention;

Figure 6 is a schematic diagram of signaling interaction in a typical scenario according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a data transmission apparatus for a non-connected UE according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a data receiving apparatus of a non-connected UE according to an embodiment of the present invention.

Detailed ways

As mentioned in the background art, in the prior art, data is transmitted after a UE in a non-connected state migrates to a connected state. However, since the state transition introduces a long time delay, the data transmission process needs to be further improved.

In the prior art, the random access process is mainly divided into Contention Based Random Access (CBRA) and Contention Free Random Access (CFRA).

If CFRA is adopted, a dedicated resource needs to be configured by the network. The dedicated resource mainly refers to the time-frequency resource and code resource for initiating a random access preamble (preamble), which is indicated by the parameter ra-PreambleIndex. Referring to Fig. 1, Fig. 1 is a schematic diagram of a random access process in the prior art. This random access is CFRA. First, the base station 2 performs operation S0, that is, sends random access preamble configuration information (Random access preamble assignment) to the user equipment 1. Secondly, after the user equipment 1 determines the random access preamble and the time-frequency resource, it can perform operation S1, that is, send the random access preamble to the base station 2. After that, the base station 2 may perform operation S2, that is, send a random access response to the user equipment 1.

Fig. 2 is a schematic flow diagram of another random access in the prior art. This random access is CBRA. Referring to Figure 2, first, when user equipment 1 is in the RRC inactive state, user equipment 1 can perform operation S1, from the synchronization signal block (Synchronization Signal and physical broadcasting channel Block, referred to as SSB) or the channel state information reference signal that meets the conditions Select an SSB or CSI-RS in (Channel State Information Reference Signal, CSI-RS for short), and then select a random access preamble. When the physical random access channel (Physical Random Access Channel, referred to as PRACH) is allowed to initiate, the occasion (PRACH) ) (Ie RO) time-frequency resource to send the random access preamble, that is, message 1 (MSG1).

Secondly, the user equipment 1 receives the random access response sent by the base station 2, that is, the message 2 (MSG2). The user equipment 1 receives the random access response by detecting a physical downlink control channel (Physical Downlink Control Channel, referred to as PDCCH) scrambled by a random access radio network temporary identity (Random Access-Radio Network Temporary Identity, referred to as RA-RNTI).

The random access response includes a timing advance command (Timing advance command, TA command for short) to carry time advance (Timing advance, TA) information, and also includes an uplink grant (grant) and a temporary cell radio network temporary identifier (Temporary Cell- Radio Network Temporary Identifier, referred to as TC-RNTI). Among them, the uplink grant carries the scheduling information for the message 3 (MSG3) sent by the user equipment 1, and the TC-RNTI is used for the UE without the Cell-Radio Network Temporary Identifier (C-RNTI) Use to receive message 4 (Message4, MSG4 for short). Since multiple UEs may select the same RO and random access preamble to initiate a random access process, there will be conflicts, so operations S3 and S4 need to be performed to resolve the conflicts.

After that, the user equipment 1 performs operation S3 and sends MSG3. If the user equipment 1 has a C-RNTI, it sends a C-RNTI Medium Access Control (Medium Access Control, MAC for short) control element (Control Element, CE for short). If there is still room, other information such as a buffer state report (Buffer State Report, BSR for short) can be sent. If user equipment 1 is idle or inactive, and there is no C-RNTI, it will send RRC Common Control Channel (CCCH) messages, including RRC Setup Request (RRCSetupRequest) or RRC Recovery Request (RRCResumeRequest) and other messages , Which carries information that can be used as a UE identity (Identity) for conflict resolution.

Further, the user equipment 1 performs operation S4 to receive the conflict resolution message sent by the base station 2, that is, MSG4. If the user equipment 1 has a C-RNTI, the user equipment 1 can receive the PDCCH scrambled with the C-RNTI. At this time, the scheduled data can be received by a specific UE. If the user equipment 1 receives the information, it is considered that the conflict resolution is successful, and the random access procedure is successful. If the user equipment 1 does not receive the scheduling of the base station 2 within a certain period of time, it is considered that the conflict resolution has failed. If the user equipment 1 does not have a C-RNTI, it uses the TC-RNTI received by MSG3 to receive the PDCCH. If the received data carries a contention resolution identity (Contention Resolution Identity) MAC CE, the user equipment 1 can consider that the conflict resolution is successful.

In order to speed up the random access process, reduce time delay and reduce the number of message sending and receiving, the prior art provides two-step random access. Fig. 3 is a schematic flow chart of another random access process in the prior art. Referring to FIG. 3, in the two-step random access process, first, the user equipment 1 performs operation S1, that is, sends a message A (MSGA), where the MSGA includes the original MSG1 and MSG3. In other words, MSGA includes the random access preamble sent on the PRACH and the payload (payload) sent on the Physical Uplink Shared Channel (PUSCH).

Secondly, the user equipment 1 performs operation S2 and receives a message B (MSGB) returned from the base station 2, that is, conflict resolution information. MSGB contains MSG2 and MSG4 information. If base station 2 only receives the random access preamble sent by user equipment 1, it will send the random access response shown in Figure 2 according to the four-step random access procedure shown in Figure 2, and user equipment 1 can fall back to four. Step random access process.

Since a UE in an inactive or idle state needs to perform a state transition first when sending data, MSGA only contains RRC messages, and the data can be sent only after the random access process is completed. In order to send data in a disconnected state, the prior art proposes two small packet transmission mechanisms. The first is that in addition to sending RRC messages in MSG3 or MSGA, data can also be carried for early data transmission (Early Data Transmission, EDT for short). In addition, if the TA is valid, the random access preamble may not be sent.

The second is that the network configures a pre-configured uplink resource (PUR) or configured grant (CG) for the UE. CG and PUR can be considered as a kind of dedicated pre-configured resources for When sending uplink data, the resource is periodic and includes time domain, frequency domain, and code domain resource information. A UE that uses PUR resources or CG resources to send has a valid TA, and can directly send data without sending a random access preamble. Compared with the four-step process, the two steps MSG1 and MSG2 are reduced.

The small packet transmission in the prior art is mainly based on network configuration. For example, when the amount of data that the UE needs to send is less than a preset threshold, or considering the delay requirements and service cycles of certain services, the network will configure the UE to use the small packet transmission mode.

At present, the non-connected random access process defines the order of selecting different transmission methods: first select uplink or supplementary uplink (Uplink/Supplementary Uplink, referred to as UL/SUL), and this selection corresponds to a reference signal received power (Reference Signal Received Power, referred to as RSRP) threshold; then choose a two-step or four-step (2-step/4-step) random access procedure, and this choice corresponds to another RSRP threshold. If the two-step random access process is selected, the random access process type (type) selection can be performed again after N retries, where N is a positive integer. After the introduction of pre-configured resources (which can be considered as a dedicated periodic resource, or a resource shared by a limited number of UEs), the selection order can be based on the network configuration of small packet transmission, preferably pre-configured resources, and then select public based on the existing scheme Resources, that is, select UL/SUL, and then decide to select a two-step or four-step random access process.

The UE needs to perform inter-frequency measurement at certain times. Under normal circumstances, the inter-frequency measurement can be triggered according to the configured measurement gap (measurement gap) or the current cell quality is less than a certain threshold. At this time, the UE cannot perform data transmission in the current cell, or the measurement timing (network configuration During this period of time, the network considers that the UE is measuring and does not receive data sent from the UE, but the UE may not measure at this time), and the network will not receive the data sent by the UE. In addition, when the UE accesses the unlicensed spectrum, it needs to perform a Listen Before Talk (LBT) process to determine the transmission timing. The UE cannot perform data transmission before the LBT determines the transmission timing. These may cause the UE to miss the opportunity to send the pre-configured resources. If the UE has data to send but does not send due to the above reasons, this situation can be called a data transmission collision. If a data transmission collision occurs, it needs to wait for the next transmission. Timing, this will cause a certain delay, and it may be difficult to meet the UE's service transmission requirements.

In order to make the above objects, features and beneficial effects of the present invention more obvious and easy to understand, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The technical solutions provided by the embodiments of the present invention are applicable to 5G communication systems, 4G and 3G communication systems, and various communication systems that are subsequently evolved.

The technical solutions provided by the embodiments of the present invention are also applicable to different network architectures, including but not limited to a relay network architecture, a dual-link network architecture, and a vehicle networking communication architecture.

The base station (Base Station, BS for short) in the embodiment of the present invention may also be referred to as base station equipment, and is a device deployed on a wireless access network to provide wireless communication functions. For example, equipment that provides base station functions in a 2G network includes a base transceiver station (Base Transceiver Station, BTS for short) and a Base Station Controller (Base Station Controller, BSC for short). The equipment that provides the base station function in the 3G network includes a NodeB (NodeB) and a Radio Network Controller (Radio Network Controller, RNC for short). The equipment that provides the base station function in the 4G network includes an evolved NodeB (evolved NodeB, eNB for short). In a wireless local area network (Wireless Local Area Network, WLAN for short), a device that provides a base station function is an access point (Access Point, AP for short). The equipment that provides base station functions in 5G New Radio (NR) includes continuously evolving Node B (gNB), and the base station also refers to equipment that provides base station functions in a new communication system in the future.

The terminal (for example, the sending terminal and/or the receiving terminal) in the embodiment of the present invention may refer to various forms of user equipment (User Equipment, UE for short), access terminal, user unit, user station, mobile station, mobile station ( Mobile Station, MS for short), remote station, remote terminal, mobile equipment, user terminal, terminal equipment (terminal equipment), wireless communication equipment, user agent or user device. The terminal device can also 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), Handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network, or future evolution of the public land mobile network (Public Land Mobile Network, referred to as The terminal equipment in the PLMN) is not limited in the embodiment of the present invention.

It should be understood that the term "and/or" in this text is only an association relationship describing the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, and both A and B exist. , There are three cases of B alone. In addition, the character "/" in this text indicates that the associated objects before and after are in an "or" relationship.

The "plurality" in the embodiments of the present invention refers to two or more than two.

The "connection" appearing in the embodiment of the present invention refers to various connection modes such as direct connection or indirect connection to realize communication between devices, which is not limited in the embodiment of the present invention.

The "network" and "system" appearing in the embodiments of the present invention express the same concept, and the communication system is the communication network.

The multi-cell operation in the embodiment of the present invention includes but is not limited to DC operation, CA operation, and MR-DC operation.

Hereinafter, various exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions, and operations of the method and system according to various embodiments of the present disclosure. It should be noted that each block in the flowchart or block diagram may represent a module, program segment, or part of code, and the module, program segment, or part of code may include one or more for implementing the provisions in the various embodiments. Executable instructions for logical functions. It should also be noted that, in some alternative implementations, the functions marked in the block may also occur in a different order from the order marked in the drawings. For example, two blocks shown in succession may actually be executed substantially in parallel, or they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the flowchart and/or block diagram, and the combination of the blocks in the flowchart and/or block diagram, can be implemented using a dedicated hardware-based system that performs the specified functions or operations. Or it can be implemented using a combination of dedicated hardware and computer instructions. It should also be noted that the sequence number of each step in the flowchart does not represent a limitation on the execution order of each step.

FIG. 4 is a schematic flowchart of a data transmission method for a non-connected UE according to an embodiment of the present invention. The data transmission method may be executed by the UE side, for example, executed by a non-connected NR UE.

Specifically, the data transmission method may include the following steps:

Step S401, receiving pre-configuration information;

Step S402, according to the pre-configuration information, use common resources to transmit the data packet to be transmitted.

More specifically, the base station may send pre-configuration information to the UE, so that the non-connected UE that can use the pre-configured resources can fall back to using common resources or based on RACH contention resources for data transmission. The pre-configured resources include, but are not limited to, dedicated resources such as PUR and CG, or can be allocated to different public resources by the UE based on ID or other forms to make them non-competitive resources, or can be dedicated resources allocated for EDT.

In step S401, the UE may receive the pre-configuration information from the base station. The pre-configuration information may be used to indicate that the network allows the UE to transmit the data packet to be transmitted based on the common resource.

The common resources refer to uplink transmission resources that can be used by multiple UEs, and may be uplink transmission resources selected by different UEs using the same rule. The common resources may include, but are not limited to, one or more of the following: two-step RACH resources, advance data transmission resources, four-step RACH resources, and contention-based uplink transmission resources, where the advance data transmission resources use contention-based resources.

In an embodiment, the base station may send the pre-configuration information based on the RRC connection release message and/or system information. Correspondingly, the UE may receive the pre-configuration information based on the RRC connection release message and/or system information.

In an embodiment, the pre-configuration information may include one or more of the following: a preset threshold for data delay; a preset threshold for network load; service information; a fallback instruction. In addition, the pre-configuration information may also include the pre-configured bandwidth of the network. When the pre-configuration information includes the bandwidth pre-configured by the network, the UE may switch to the bandwidth pre-configured by the network when the BWP to which the pre-configured resource issued by the network belongs does not have the common resource, and The data packet to be transmitted is transmitted using a common resource of a bandwidth pre-configured by the network.

Wherein, the fallback indication is used to indicate that the network allows the UE to use the common resource to transmit the data packet to be transmitted, and/or, is used to indicate that the network allows the UE to use the common resource to transmit the to-be-transmitted data packet The maximum number of data packets. For example, the fallback indication occupies 1 bit, which is used to indicate whether the network allows the UE to use the common resource to transmit the data packet to be transmitted, or whether the network allows the UE to use the common resource to transmit the data to be transmitted Packet once. For another example, the backoff indication occupies multiple bits, and the multiple bits are used to indicate that the network allows the UE to use the common resource to transmit the data packet to be transmitted, and use different bit values to indicate that the network allows the UE to use the common resource The maximum number of times the data packet to be transmitted is transmitted.

In specific implementation, the preset data delay threshold refers to the preset delay threshold to be allowed to fall back. When the delay requirement of the data to be transmitted is less than or equal to the threshold, the UE is allowed to use public resources to transmit the Data packets to be transmitted. Otherwise, when the delay requirement of the data to be transmitted is greater than the threshold, the UE may wait until the next pre-configured resource comes, and then transmit the data packet to be transmitted. Or when the delay requirement of the data to be transmitted is less than or equal to the threshold and the next pre-configured resource cannot meet the service requirements of the data to be transmitted, the UE is allowed to use common resources to transmit the data to be transmitted.

In specific implementation, the preset network load threshold refers to the load threshold preset by the network. When a UE has a data transmission collision and needs to send data to be transmitted, the UE according to the current network load situation, for example, the network will broadcast a The current cell load value, or the UE can obtain the value from other methods, and when the value is less than or equal to the network load preset threshold, the UE is allowed to use public resources to send the data packet to be transmitted. Otherwise, the UE may wait until the next pre-configured resource comes before transmitting the data packet to be transmitted. Or if the current network load condition is lower than the network load preset threshold, and the next pre-configured resource cannot meet the service requirements of the data to be transmitted, the UE is allowed to use common resources to transmit the data to be transmitted.

In specific implementation, the service information may include one or more of the following: logical channel identification; radio bearer (radio bearer, RB for short) identification; access category identification; access identification. The RB may include a data radio bearer (Data RB, DRB) and a signaling radio bearer (Signaling RB, SRB). Wherein, the access category may include, but is not limited to, a category value used for access control, or a reason value for access, and the like.

In an embodiment, if the pre-configuration information includes a logical channel identifier, it may be one or more logical channel identifiers, or a list of logical channel identifiers, and the logical channel identifier associated with the data packet to be transmitted belongs to the logical channel identifier. In the channel list, the UE is allowed to use common resources to send the data packet to be transmitted. Otherwise, the UE may wait until the next pre-configured resource comes before transmitting the data packet to be transmitted. Or the logical channel identifier of the data packet to be transmitted belongs to the logical channel list, then the UE may use common resources to send the data to be transmitted when the next pre-configured resource cannot meet the service requirements of the data to be transmitted package.

In an embodiment, if the pre-configuration information includes an RB identifier, it may be one or more RB identifiers, or a list of RB identifiers, and the RB identifier associated with the data packet to be transmitted belongs to the configuration information. The RB identification allows the UE to use common resources to send the data packet to be transmitted. Otherwise, the UE may wait until the next pre-configured resource comes before transmitting the data packet to be transmitted. Or the RB identifier associated with the data packet to be transmitted belongs to the RB identifier in the configuration information, then the UE may use common resources to send the data when the next pre-configured resource cannot meet the service requirements of the data to be transmitted Data packets to be transmitted.

In an embodiment, if the pre-configuration information includes an access type identifier, which may be one or more access type identifiers, or a list of access type identifiers, and the access type identifier corresponding to the data packet to be transmitted If the incoming type identifier belongs to the access type identifier in the configuration information, the UE is allowed to use public resources to send the data packet to be transmitted. Otherwise, the UE may wait until the next pre-configured resource comes before transmitting the data packet to be transmitted. Or the access type identifier corresponding to the data packet to be transmitted belongs to the access type identifier in the configuration information, the UE may use when the next pre-configured resource cannot meet the service requirements of the data packet to be transmitted The public resource sends the data packet to be transmitted.

In an embodiment, the access identifier, that is, the access identity, may be used to indicate the access class (access class) or user level information of the UE. If the pre-configuration information includes the access identifier, there may be one or more of them. Access identifiers, or a list of access identifiers, and the access identifier corresponding to the data packet to be transmitted belongs to the access identifier in the configuration information, the UE is allowed to use public resources to send the data packet to be transmitted . Otherwise, the UE may wait until the next pre-configured resource comes before transmitting the data packet to be transmitted. Or the access identifier corresponding to the data packet to be transmitted belongs to the access identifier in the configuration information, then the UE may use common resources when the next pre-configured resource cannot meet the service requirements of the data packet to be transmitted Sending the data packet to be transmitted.

Those skilled in the art understand that when the UE is in a non-connected state and the UE has the data packet to be transmitted, the UE just meets the measurement condition, and the UE will not transmit the data packet to be transmitted, but will perform measurement. Or, the UE is deployed in an unlicensed frequency band, and when the UE is in an unconnected state and the UE has the data packet to be transmitted, the UE needs to perform a listen-before-speak operation in the unlicensed frequency band without transmitting the data packet to be transmitted. Or, when the UE is in a disconnected state and the UE has the data packet to be transmitted, the UE will not transmit the data packet to be transmitted just during the measurement gap.

After completing the measurement or LBT or measurement gap, if the UE has learned from the received pre-configuration information that the UE can use common resources to transmit the data packet to be transmitted, the UE can first determine the next data packet to be transmitted. Whether the pre-configured resource meets the preset service requirement, if the judgment result shows that the preset service requirement is not met, the UE may try to transmit the data packet to be transmitted based on the common resource. Otherwise, if the judgment result indicates that the preset service requirements are met, the UE may give up using public resources for transmission, and use the pre-configured resources to transmit the data packet to be transmitted. In a specific implementation, if the pre-configuration information includes a back-off indication, and the maximum number of times the back-off indication indicates is 1, then the UE needs to wait after the UE fails to transmit the data packet to be transmitted based on the common resource The next pre-configured resource to transmit the data packet to be transmitted.

In a specific implementation, if the pre-configuration information includes a back-off indication, and the maximum number of times that the back-off indication indicates is N, N>1, and N is a positive integer, then the UE is transmitting the waiting time based on the common resource. After the transmission of the data packet fails, the UE can determine whether the pre-configured resource is available. When the pre-configured resource is unavailable and the number of times that the common resource is used to transmit the data packet to be transmitted is less than N, the UE may continue to transmit the data packet to be transmitted based on the common resource. Or, after the UE fails to transmit the data packet to be transmitted based on the common resource, when the number of times the data packet to be transmitted is transmitted using the common resource is less than N, directly use the common resource to transmit the data to be transmitted package. Further, if the pre-configured resource is available, the UE may use the pre-configured resource to transmit the data packet to be transmitted. Wherein, whether the pre-configured resource is available refers to judging whether the use of the pre-configured resource meets the service requirements of the data packet to be transmitted.

In a specific implementation, if the pre-configuration information only includes a fallback instruction, the UE performs fallback after a data transmission collision occurs according to the fallback instruction, and uses the common resource to transmit the data packet to be transmitted using the common resource. Or, if the pre-configuration information includes the following multiple items: data delay preset threshold; network load preset threshold; service information; fallback instruction, then the UE makes a judgment based on these conditions, and when all of these information are met, it can be used The public resource uses the public resource to transmit the data packet to be transmitted. In a specific implementation, the selected sending resource satisfies the service requirements of the data packet to be transmitted, including requirements such as delay requirements, data volume, and so on. The public resources that the UE is required to select need to meet the service requirements of sending resources to meet the data packets to be transmitted.

In one embodiment, if the bandwidth part (Bandwidth Part, BWP) to which the pre-configured resource belongs does not have the common resource, the UE may switch to the uplink initial bandwidth or the network pre-configured bandwidth, and use the uplink initial bandwidth. The to-be-transmitted data packet is transmitted by a common resource of a bandwidth or a bandwidth pre-configured by the network. The uplink initial bandwidth refers to the bandwidth used when the UE initially accesses the network, and the network pre-configured bandwidth is the bandwidth specified by the network in the pre-configuration information. Further, in some cases, the pre-configured resources may be available in one or more cells. If the UE performs cell reselection from the serving cell to another cell, the pre-configuration information in the RRC connection release message received by the UE in the serving cell and the system information received in the other cell (System Information, for short) When the pre-configuration information in the SI) is different, the UE can use the system information of the other cell as a reference. In the non-connected state, data is transmitted based on the pre-configured information in the system information. Wherein, the other cell refers to a cell other than the serving cell, and UEs in the other cell can use the pre-configured resource. Or if the pre-configuration information in the RRC connection release message received in the serving cell contains valid information, for example, the valid information is a cell list, and if other reselected cells are included in the list, the pre-configuration information can still be used Perform data transfer back and send.

For example, it is assumed that the pre-configured resources are valid in the serving cell A and cell B where the UE is located. In other words, the pre-configured resources of the serving cell A and the cell B are the same resource. Under this condition, if the UE undergoes cell reselection from the serving cell A to the cell B, if the UE receives the pre-configuration information in the serving cell A and the UE receives the pre-configuration information in the SIB in the cell B If the configuration information conflicts, the UE can use the SIB of cell B as the standard.

Further, when selecting the public resource to send, the selected public resource needs to meet business requirements, including requirements such as delay requirements, data volume, etc., regardless of the type of public resource selected (type). The public resource may include but It is not limited to two-step RACH resources, four-step RACH resources, EDT resources, and competition-based resources.

FIG. 5 is a schematic flowchart of a data receiving method for a non-connected UE according to an embodiment of the present invention. The data receiving method may be executed by the network side, for example, executed by NR gNB. Specifically, the data receiving method may include the following steps:

Step S501, sending pre-configuration information;

Step S502: Receive a data packet to be transmitted that is transmitted using a common resource.

More specifically, in step S501, the base station may send pre-configuration information to the UE. The pre-configuration information may be used to indicate that the network allows the UE to transmit the data packet to be transmitted based on the common resource.

In an embodiment, the pre-configuration information may include one or more of the following: a preset threshold for data delay; a preset threshold for network load; service information; a fallback instruction, where the fallback instruction is used to indicate The network allows the UE to use the common resource to transmit the data packet to be transmitted, and/or is used to indicate the maximum number of times that the network allows the UE to use the common resource to transmit the data packet to be transmitted.

Wherein, the service information may include one or more of the following: logical channel identification; radio bearer identification; access type identification; access identification.

In an embodiment, the base station may send the pre-configuration information based on the RRC connection release message and/or system information.

In step S502, the base station may receive the to-be-transmitted data packet uploaded by the UE using public resources. In an embodiment, the common resources may include one or more of the following: two-step RACH resources, advance data transmission resources, four-step RACH resources, and contention-based uplink transmission resources.

Those skilled in the art understand that step S501 and step S502 can be regarded as execution steps corresponding to step S401 to step S402 in the embodiment shown in FIG. 4, and the two are complementary to each other in terms of specific implementation principles and logic. . Therefore, for the data receiving method on the network side, reference may be made to the related description of the embodiment shown in FIG. 4, which will not be repeated here.

In the following, a specific embodiment of the present invention will be described by taking a non-connected UE (for example, an inactive UE) having a data packet to be transmitted as an example. If a non-connected UE (for example, an inactive UE) has a data packet to be transmitted and the measurement needs to be completed, the UE may perform the measurement first. Or, if a non-connected UE (for example, an inactive UE) has a data packet to be transmitted, and the UE is deployed in an unlicensed frequency band, then the UE may perform the LBT operation first. After that, if the next pre-configured resource of the UE does not meet the service requirements of the data packet to be transmitted, the UE can fall back to the RACH/EDT process and perform the two-step RACH process, the four-step RACH process or the EDT to send the Data packets to be transmitted.

Refer to Figure 6 for details. Fig. 6 is a schematic diagram of signaling interaction in a typical scenario according to an embodiment of the present invention. Among them, the user equipment 1 is located in a serving cell to which the base station 2 belongs. The base station 2 configures pre-configured resources for the user equipment 1 in advance to prepare the user equipment 1 to send data when the user equipment 1 is in a disconnected state (not shown in the figure). Under this condition, first, the base station 2 can perform operation S1, that is, the base station 2 sends the pre-configuration information to the user equipment 1. The pre-configuration information may carry relevant information that allows the UE to fall back to RACH/EDT through the RRC connection release message and/or system information, so as to perform the fallback condition configuration.

In an embodiment, the pre-configuration information is used to indicate that the network allows the UE to transmit the data packet to be transmitted based on the common resource. The pre-configuration information may include one or more of the following: a data delay threshold; a preset threshold for network load; service information; a fallback indication, where the fallback indication is used to indicate that the network allows the UE to use the public resource for transmission The data packet to be transmitted, and/or, is used to indicate the maximum number of times that the network allows the UE to use the common resource to transmit the data packet to be transmitted. Wherein, the service information may include one or more of the following: logical channel identification; radio bearer identification; access type identification; access identification. The base station 2 allows certain to-be-transmitted data of the non-connected user equipment 1 to be transmitted using pre-configured resources or common resources.

Secondly, the user equipment 1 enters a non-connected state. When the user equipment 1 has a data packet to be transmitted, operation S2 needs to be performed, that is, the user equipment 1 performs measurement, or performs an LBT operation, or just in the measurement gap, does not perform data transmission.

Third, the user equipment 1 performs operation S3, that is, the user equipment 1 determines whether the next pre-configured resource can meet the service requirements of the data packet to be transmitted.

After that, the judgment result of the user equipment 1 indicates that the next pre-configured resource cannot meet the service requirements of the data packet to be transmitted, and satisfies the conditions given by the pre-configured information, the user equipment 1 performs operation S4, that is, adopts public The resource sends the data packet to be transmitted. Wherein, the public resources may include, but are not limited to, two-step RACH resources, four-step RACH resources, EDT resources, and competition-based resources.

Further, the pre-configuration information may include a back-off indication, and the back-off indication may indicate the maximum number of times that the network allows the UE to use the common resource to transmit the data packet to be transmitted, and/or indicates the The network allows the UE to use the common resource to transmit the data packet to be transmitted. If the backoff indication indicates that the maximum number of times that the network allows the UE to use the common resource to transmit the data packet to be transmitted is 1, the user equipment 1 may perform operation S51 after the transmission fails using the common resource. , That is, waiting for the next pre-configured resource, and transmitting the data packet to be transmitted based on the next pre-configured resource.

Alternatively, if the fallback indication is used to indicate that the maximum number of times that the network allows the UE to use the common resource to transmit the data packet to be transmitted is N, and N is a positive integer greater than 1, then the user equipment 1 may The transmission using the common resource fails, but the maximum number of times is not reached, and operation S52 is performed before the sending timing of the next pre-configured resource, that is, the data packet to be transmitted is continued to be retransmitted based on the common resource.

For more details on the working principles and working methods of the user equipment 1 and the base station 2 in the application scenario shown in FIG. 6, reference may be made to the related descriptions in the foregoing FIG. 4 and FIG. 5, which will not be repeated here.

In summary, the embodiments of the present invention do not wait for the next opportunity to pre-configure resources (or dedicated resources), but instead fall back to the scheme of sending data packets to be transmitted using public resources, thereby ensuring UE service transmission requirements and reducing The time delay caused by the state transition improves the data transmission efficiency.

FIG. 7 is a schematic structural diagram of a data transmission apparatus of a non-connected UE according to an embodiment of the present invention. The data transmission device 7 may implement the method and technical solutions shown in FIG. 4 and FIG. 6 and be executed by the UE. Specifically, the data transmission device 7 may include: a receiving module 71, configured to receive pre-configuration information; and a transmission module 72, configured to use common resources to transmit data packets to be transmitted according to the pre-configuration information.

For more details on the working principle and working mode of the data transmission device 7, reference may be made to the related descriptions in FIG. 4 and FIG. 6, which will not be repeated here.

FIG. 8 is a schematic structural diagram of a data receiving apparatus of a non-connected UE according to an embodiment of the present invention. The data receiving device 8 can implement the method and technical solutions shown in FIG. 5 and FIG. 6, and is executed by the network side device. Specifically, the data receiving device 8 may include: a sending module 81, configured to send pre-configuration information; and a receiving module 82, configured to receive data packets to be transmitted that are transmitted using common resources.

For more details on the working principle and working mode of the data receiving device 8, reference may be made to the related descriptions of the technical solutions in FIG. 5 and FIG. 6, which will not be repeated here.

Further, an embodiment of the present invention also discloses a storage medium on which computer instructions are stored, and when the computer instructions are run, the method and technical solution described in the embodiment shown in FIG. 4 or in the embodiment shown in FIG. 6 are executed. The method and technical scheme. Preferably, the storage medium may include a computer-readable storage medium such as a non-volatile memory or a non-transitory memory. The computer-readable storage medium may include ROM, RAM, magnetic disk or optical disk, and so on.

It should be understood that, in the embodiment of the present invention, the processor may be a central processing unit (Central Processing Unit, CPU for short), and the processor may also be other general-purpose processors or digital signal processors (DSP for short). , Application Specific Integrated Circuit (ASIC for short), Field Programmable Gate Array (FPGA for short) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

It should also be understood that the memory in the embodiment of the present invention 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 a read-only memory (Read-Only Memory, ROM for short), a programmable read-only memory (Programmable ROM, PROM for short), and an erasable programmable read-only memory (Erasable PROM, EPROM for short). , Electrically Erasable Programmable Read-Only Memory (Electrically EPROM, EEPROM for short) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM for short), which is used as an external cache. By way of exemplary but not restrictive description, many forms of random access memory (Random Access Memory, RAM for short) are available, such as static random access memory (Static RAM, SRAM for short) and dynamic random access memory (Dynamic Random Access Memory). , DRAM for short), Synchronous DRAM (SDRAM for short), Double Data Rate SDRAM (DDR SDRAM for short), and Enhanced Synchronous Dynamic Random Access Memory (Enhanced) SDRAM, ESDRAM for short), Synchronous connection to DRAM (SLDRAM for short) and Direct Rambus RAM (DR-RAM for short).

The foregoing embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, the above-mentioned embodiments may be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on the computer, the processes or functions according to the embodiments of the present invention are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more sets of available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium may be a solid state drive.

Further, an embodiment of the present invention also discloses a terminal, including a memory and a processor, the memory stores computer instructions that can run on the processor, and the processor executes the above diagram when the computer instructions are executed. 4 and the technical solution of the method described in the embodiment shown in FIG. 6. Preferably, the terminal may be an NR UE.

Further, an embodiment of the present invention also discloses a base station, including a memory and a processor, the memory stores computer instructions that can run on the processor, and the processor executes the above diagram when the computer instructions are executed. 5 and the technical solution of the method described in the embodiment shown in FIG. 6. Preferably, the base station may be an NR base station.

Although the present invention is disclosed as above, the present invention is not limited to this. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

A data transmission method for a non-connected UE, which is characterized in that it includes:

Receive pre-configuration information;

According to the pre-configuration information, a common resource is used to transmit the data packet to be transmitted.
The data transmission method according to claim 1, wherein the pre-configuration information is used to indicate that the network allows the UE to transmit the data packet to be transmitted based on the common resource.
The data transmission method according to claim 1, wherein the pre-configuration information includes one or more of the following:

Data delay preset threshold; network load preset threshold; service information; fallback indication, where the fallback indication is used to indicate that the network allows the UE to use the common resource to transmit the data packet to be transmitted, and/or, Used to indicate the maximum number of times that the network allows the UE to use the common resource to transmit the data packet to be transmitted.
The data transmission method according to claim 3, wherein the service information includes one or more of the following: logical channel identification; radio bearer identification; access type identification; access identification.
The data transmission method according to claim 3, wherein the maximum number of times is greater than 1, and the data transmission method further comprises:

If the transmission of the to-be-transmitted data packet fails based on the common resource, determining whether the pre-configured resource is available;

When the pre-configured resource is unavailable and the number of times of using the common resource to transmit the data packet to be transmitted is less than the maximum number of times, continue to transmit the data packet to be transmitted based on the common resource.
The data transmission method according to claim 5, further comprising:

When the pre-configured resource is available, the pre-configured resource is used to transmit the data packet to be transmitted.
The data transmission method according to any one of claims 1 to 6, wherein the receiving pre-configuration information comprises:

The pre-configuration information is received based on the RRC connection release message and/or system information.
The data transmission method according to claim 7, further comprising:

If the cell reselection is performed from the serving cell to the preset specific cell, when the pre-configuration information in the RRC connection release message is different from the pre-configuration information in the system information, the preset specific cell is used. System information is the benchmark;

Wherein, the preset specific cell refers to a cell other than the serving cell, and UEs in the preset specific cell can use the pre-configured resource.
The data transmission method according to any one of claims 1 to 6, wherein the transmission of the data packet to be transmitted using a common resource comprises:

Judging whether the next pre-configured resource used to send the data packet to be transmitted meets a preset service requirement;

If the preset service requirement is not met, the data packet to be transmitted is transmitted based on the common resource.
The data transmission method according to claim 9, wherein the transmitting the data packet to be transmitted based on the common resource comprises:

If the BWP to which the pre-configured resource belongs does not have the public resource, switch to the uplink initial bandwidth or network pre-configured bandwidth, and use the public resource of the uplink initial bandwidth or network pre-configured bandwidth to transmit the data to be transmitted package.
The data transmission method according to any one of claims 1 to 6, characterized in that, before using public resources to transmit the data packet to be transmitted, the data transmission method further comprises:

When there is the data packet to be transmitted, the measurement is performed or the listen-before-speak is performed in the unlicensed frequency band or the data packet to be transmitted is not transmitted in the measurement gap.
The data transmission method according to any one of claims 1 to 6, wherein the common resources include one or more of the following: two-step RACH resources, advance data transmission resources, four-step RACH resources, and contention-based resources. Uplink transmission resources.
A data receiving method for a non-connected UE, which is characterized in that it includes:

Send pre-configuration information;

Receive data packets to be transmitted that are transmitted using public resources.
The data receiving method according to claim 13, wherein the pre-configuration information is used to indicate that the network allows the UE to transmit the data packet to be transmitted based on the common resource.
The data receiving method according to claim 13, wherein the pre-configuration information includes one or more of the following:

Data delay preset threshold; network load preset threshold; service information; fallback indication, where the fallback indication is used to indicate that the network allows the UE to use the common resource to transmit the data packet to be transmitted, and/or, Used to indicate the maximum number of times that the network allows the UE to use the common resource to transmit the data packet to be transmitted.
The data receiving method according to claim 15, wherein the service information includes one or more of the following: logical channel identification; radio bearer identification; access type identification; access identification.
The data receiving method according to any one of claims 13 to 16, wherein the sending pre-configuration information comprises:

The pre-configuration information is sent based on the RRC connection release message and/or system information.
The data receiving method according to any one of claims 13 to 16, wherein the common resources include one or more of the following: two-step RACH resources, advance data transmission resources, four-step RACH resources, contention-based resources Uplink sending resources.
A data transmission device for a non-connected UE, which is characterized in that it comprises:

The receiving module is used to receive pre-configuration information;

The transmission module is configured to use common resources to transmit the data packet to be transmitted according to the pre-configuration information.
A data receiving device for a non-connected UE, which is characterized in that it comprises:

Sending module, used to send pre-configuration information;

The receiving module is used to receive data packets to be transmitted that are transmitted using common resources.
A storage medium having computer instructions stored thereon, wherein the computer instructions execute the steps of any one of claims 1 to 12 or any one of claims 13 to 18 when the computer instructions are run.
A terminal, comprising a memory and a processor, and computer instructions that can be run on the processor are stored on the memory, wherein the processor executes any one of claims 1 to 12 when the computer instructions are executed. The steps of the method described in item.
A base station, comprising a memory and a processor, the memory stores computer instructions that can run on the processor, wherein the processor executes any one of claims 13 to 18 when the computer instructions are executed. The steps of the method described in item.