CN109691212B

CN109691212B - Cell switching method and device for unauthorized uplink transmission

Info

Publication number: CN109691212B
Application number: CN201780054238.4A
Authority: CN
Inventors: 庄宏成; 韩云博
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-06-27
Filing date: 2017-07-28
Publication date: 2021-02-05
Anticipated expiration: 2037-07-28
Also published as: CN109691212A; WO2019000544A1

Abstract

The invention provides a cell switching method and device for unauthorized uplink transmission.A source base station acquires first unauthorized transmission configuration information by including switching type information in a switching request message sent to a target base station, wherein the switching type information is used for indicating that terminal equipment supports unauthorized transmission and the characteristics of unauthorized service of the terminal equipment, the first unauthorized transmission configuration information comprises information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter, which are used by the terminal equipment for unauthorized transmission with the target base station, and sends a switching command message to the terminal equipment, and the switching command message comprises the first unauthorized transmission configuration information. The terminal equipment acquires the first unauthorized transmission configuration information used for communicating with the target base station in advance, so that blind detection of the target base station on unauthorized services of the terminal equipment is reduced, and correct receiving of the unauthorized services is guaranteed.

Description

Cell switching method and device for unauthorized uplink transmission

The present application claims priority of chinese patent application with application number 201710502216.1, entitled "method for switching grant-free uplink transmission" filed in 2017, 27/6.78, which is incorporated herein by reference in its entirety.

Technical Field

The present application relates to communications technologies, and in particular, to a cell handover method and device for unlicensed-free uplink transmission.

Background

At present, the existing mobile communication system mainly adopts a request-grant-based uplink data transmission method, but with the increasing abundance of application scenarios, terminal types and application types, the number of terminal devices will increase explosively in the evolution process of the future mobile communication system, and users have extremely high requirements for network delay in specific application scenarios. In this case, the conventional request-grant based uplink data transmission method is no longer applicable due to the higher latency and signaling overhead.

Compared with the traditional transmission method based on request-authorization, in the non-authorized transmission method, the user directly uses the specific resource to send the uplink data without going through the process of requesting the uplink authorization from the service request to the base station, so the method has great advantages in the aspects of network delay and signaling overhead. In the existing method, a source base station performs cell handover decision and sends a handover request to a target base station, and a Contention Transmission Unit (CTU) selected by a terminal device for performing unauthorized Transmission and a code resource adopted by the terminal device are carried in a handover request message. After receiving the switching request message of the source base station, the target base station judges whether the terminal equipment is allowed to access the target base station by adopting the competition transmission unit and the code resource carried in the switching request message according to the load condition of the target base station and the competition transmission unit and the code resource adopted by the terminal equipment; if the terminal is granted to access the target base station by adopting the competition transmission unit and the code resource carried in the switching request message, indicating the terminal equipment to adopt the competition transmission unit and the code resource carried in the switching request message to carry out unauthorized transmission in the switching request confirmation message; and if the terminal equipment is not approved to access the target base station by adopting the competition transmission unit and the code resource carried in the switching request message, indicating a new competition transmission unit and the code resource to the terminal equipment in the switching request confirmation message.

However, in the prior art, the target base station only sends the contention transmission unit and the code resource information to the terminal device, and does not send the air interface parameter to the terminal device, and because the air interface parameters used in different scenarios and services are different, it cannot be guaranteed that the target base station correctly receives the data of the unauthorized service.

Disclosure of Invention

The application provides a cell switching method and device for unauthorized uplink transmission, which ensure correct receiving of unauthorized services.

A first aspect of the present application provides a cell handover method for unlicensed uplink transmission, including:

a source base station sends a switching request message to a target base station, wherein the switching request message comprises switching type information, and the switching type information is used for indicating that terminal equipment supports unauthorized transmission and the characteristics of unauthorized service of the terminal equipment;

the source base station receives a handover response sent by a target base station, wherein the handover response includes first unauthorized transmission configuration information, and the first unauthorized transmission configuration information includes: the terminal equipment and the target base station perform unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter, wherein the information of the first unauthorized transmission resource and the configuration information of the first uplink air interface transmission parameter are determined by the target base station according to the characteristics of the unauthorized service;

and the source base station sends a switching command message to the terminal equipment, wherein the switching command message comprises the first unauthorized transmission configuration information.

Optionally, the handover response further includes a transmission power of a pilot signal of the target base station, and the handover command message further includes a timing advance of the terminal device at the target base station, so that the method further includes:

and the source base station determines the time advance of the terminal equipment in the target base station according to the transmission power of the pilot signal of the target base station.

Optionally, the handover response further includes a time advance of the terminal device at the target base station.

Optionally, the handover response and the handover command message further include uplink synchronization resources of the target base station.

A second aspect of the present application provides a cell handover method for unlicensed uplink transmission, including:

a terminal device receives a handover command message sent by a source base station, wherein the handover command message includes first unauthorized transmission configuration information, and the first unauthorized transmission configuration information includes: the terminal device and the target base station perform unauthorized transmission to use the information of the first unauthorized transmission resource and the configuration information of the first uplink air interface transmission parameter

And the terminal equipment sends an unauthorized service to the target base station according to the first unauthorized transmission configuration information.

Optionally, the handover command message includes: a timing advance of the terminal device at the target base station, the timing advance being determined by the source base station or the target base station;

the terminal device sends an unauthorized service to the target base station according to the first unauthorized transmission configuration information, and the method comprises the following steps:

and the terminal equipment sends an unauthorized service to the target base station according to the first unauthorized transmission configuration information and the time advance.

Optionally, the handover command message includes: uplink synchronization resources of the target base station;

before the terminal device sends the unauthorized service to the target base station according to the first unauthorized transmission configuration information, the method further includes:

the terminal equipment sends a signal on the uplink synchronous resource of the target base station;

the terminal equipment receives the time lead of the terminal equipment in the target base station, which is sent by the target base station, wherein the time lead of the terminal equipment in the target base station is determined by the target base station according to a signal sent by the terminal equipment on an uplink synchronous resource of the target base station;

and the terminal equipment sends an unauthorized service to a target base station according to the first unauthorized transmission configuration information and the time advance of the terminal equipment in the target base station.

A third aspect of the present application provides a cell handover method for unlicensed uplink transmission, including:

a target base station receives a switching request message sent by a source base station, wherein the switching request message comprises switching type information, and the switching type information is used for indicating that terminal equipment supports unauthorized transmission and the characteristics of unauthorized service of the terminal equipment;

the target base station determines first unauthorized transmission configuration information according to the characteristics of the unauthorized service, wherein the first unauthorized transmission configuration information comprises: the terminal equipment and the target base station perform unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter;

and the target base station sends a switching response to the source base station, wherein the switching response comprises the first unauthorized transmission configuration information.

Optionally, the handover request further includes RSRP of the target base station measured by the terminal device, and the handover response further includes a time advance of the terminal device at the target base station, then the method further includes:

and the target base station determines the time advance of the terminal equipment in the target base station according to the RSRP of the target base station measured by the terminal equipment.

Optionally, the handover response further includes a transmission power of a pilot signal of the target base station or an uplink synchronization resource of the target base station.

A fourth aspect of the present application provides a source base station, including:

a sending module, configured to send a handover request message to a target base station, where the handover request message includes handover type information, and the handover type information is used to indicate that a terminal device supports unauthorized transmission and characteristics of an unauthorized service of the terminal device;

a receiving module, configured to receive a handover response sent by a target base station, where the handover response includes first unauthorized transmission configuration information, and the first unauthorized transmission configuration information includes: the terminal equipment and the target base station perform unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter, wherein the information of the first unauthorized transmission resource and the configuration information of the first uplink air interface transmission parameter are determined by the target base station according to the characteristics of the unauthorized service;

the sending module is further configured to send a handover command message to the terminal device, where the handover command message includes the first unauthorized transmission configuration information.

Optionally, the handover response further includes a transmission power of a pilot signal of the target base station, and the handover command message further includes a timing advance of the terminal device at the target base station, so that the source base station further includes:

and the determining module is used for determining the time advance of the terminal equipment in the target base station according to the sending power of the pilot signal of the target base station.

A fifth aspect of the present application provides a terminal device, including:

a receiving module, configured to receive a handover command message sent by a source base station, where the handover command message includes first unauthorized transmission configuration information, and the first unauthorized transmission configuration information includes: the terminal equipment and the target base station perform unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter;

and the sending module is used for sending the unauthorized service to the target base station according to the first unauthorized transmission configuration information.

the sending module is specifically configured to: and sending an unauthorized service to the target base station according to the first unauthorized transmission configuration information and the time advance.

the sending module is further configured to send a signal on the uplink synchronization resource of the target base station;

the receiving module is further configured to receive a timing advance of the terminal device at the target base station, where the timing advance of the terminal device at the target base station is determined by the target base station according to a signal sent by the terminal device on an uplink synchronization resource of the target base station;

the sending module sends an unauthorized service to the target base station according to the first unauthorized transmission configuration information, specifically: and sending an unauthorized service to a target base station according to the first unauthorized transmission configuration information and the time advance of the terminal equipment in the target base station.

A sixth aspect of the present application provides a target base station, comprising:

a receiving module, configured to receive a handover request message sent by a source base station, where the handover request message includes handover type information, and the handover type information is used to indicate that a terminal device supports unauthorized transmission and characteristics of an unauthorized service of the terminal device;

a processing module, configured to determine first unauthorized transmission configuration information according to a characteristic of the unauthorized service, where the first unauthorized transmission configuration information includes: the terminal equipment and the target base station perform unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter;

a sending module, configured to send a handover response to the source base station, where the handover response includes the first unauthorized transmission configuration information.

Optionally, the handover request further includes RSRP of the target base station measured by the terminal device, and the handover response further includes a time advance of the terminal device in the target base station, where the processing module is further configured to:

and determining the time advance of the terminal equipment in the target base station according to the RSRP of the target base station measured by the terminal equipment.

A seventh aspect of the present application provides a source base station, including:

a transmitter, configured to send a handover request message to a target base station, where the handover request message includes handover type information, and the handover type information is used to indicate that a terminal device supports unauthorized transmission and characteristics of an unauthorized service of the terminal device;

a receiver, configured to receive a handover response sent by a target base station, where the handover response includes first unauthorized transmission configuration information, and the first unauthorized transmission configuration information includes: the terminal equipment and the target base station perform unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter, wherein the information of the first unauthorized transmission resource and the configuration information of the first uplink air interface transmission parameter are determined by the target base station according to the characteristics of the unauthorized service;

the transmitter is further configured to transmit a handover command message to the terminal device, where the handover command message includes the first unauthorized transmission configuration information.

and the processor is used for determining the time advance of the terminal equipment in the target base station according to the transmission power of the pilot signal of the target base station.

An eighth aspect of the present application provides a terminal device, including:

a receiver, configured to receive a handover command message sent by a source base station, where the handover command message includes first unauthorized transmission configuration information, and the first unauthorized transmission configuration information includes: the terminal equipment and the target base station perform unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter;

a transmitter, configured to send an unauthorized service to the target base station according to the first unauthorized transmission configuration information.

the transmitter is specifically configured to: and sending an unauthorized service to the target base station according to the first unauthorized transmission configuration information and the time advance.

the transmitter is further configured to transmit a signal on an uplink synchronization resource of the target base station;

the receiver is further configured to receive a timing advance of the terminal device at the target base station, where the timing advance of the terminal device at the target base station is determined by the target base station according to a signal sent by the terminal device on an uplink synchronization resource of the target base station;

the transmitter transmits an unauthorized service to the target base station according to the first unauthorized transmission configuration information, specifically: and sending an unauthorized service to a target base station according to the first unauthorized transmission configuration information and the time advance of the terminal equipment in the target base station.

A ninth aspect of the present application provides a target base station, comprising:

a receiver, configured to receive a handover request message sent by a source base station, where the handover request message includes handover type information, and the handover type information is used to indicate that a terminal device supports unauthorized transmission and characteristics of an unauthorized service of the terminal device;

a processor, configured to determine first unlicensed transmission configuration information according to a characteristic of the unlicensed service, where the first unlicensed transmission configuration information includes: the terminal equipment and the target base station perform unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter;

a transmitter, configured to send a handover response to the source base station, where the handover response includes the first unauthorized transmission configuration information.

Optionally, the handover request further includes RSRP of the target base station measured by the terminal device, and the handover response further includes a time advance of the terminal device at the target base station, where the processor is further configured to:

In the first aspect to the ninth aspect of the present application, the handover request message further includes second unauthorized transmission configuration information, where the second unauthorized transmission configuration information includes: and the terminal equipment and the source base station perform unauthorized transmission to use the information of the second unauthorized transmission resource and the configuration information of the second uplink air interface transmission parameter.

Further, the handover request message further includes a buffer status report BSR of the unauthorized service of the terminal device.

In the first to ninth aspects of the present application, the first uplink air interface transmission parameter or the second uplink air interface parameter includes at least one of an uplink waveform, a multiple access method, a modulation and coding method, a radio frame structure, a power control related parameter, a subcarrier interval, and a cyclic prefix CP length.

Optionally, the uplink waveform includes single-carrier discrete fourier transform spread spectrum orthogonal frequency division multiplexing DFT-S-OFDM or multi-carrier cyclic prefix orthogonal frequency division multiplexing CP-OFDM; the multiple access mode comprises orthogonal frequency division multiple access OFDMA or non-orthogonal multiple access NOMA; the radio frame structure comprises a demodulation reference signal (DMRS) configuration; the power control related parameters comprise uplink maximum transmitting power, a receiving power level expected by a base station, a path loss compensation factor or a power adjustment amount.

A tenth aspect of the present application provides a computer-readable medium comprising computer-executable instructions for causing a source base station to perform the method provided by the first aspect of the present application.

An eleventh aspect of the present application provides a computer-readable medium comprising computer-executable instructions for causing a terminal device to perform the method provided by the second aspect of the present application.

A twelfth aspect of the present application provides a computer-readable medium comprising computer-executable instructions for causing a target base station to perform the method provided by the third aspect of the present application.

A thirteenth aspect of the present application provides a system on a chip, the system being applicable to a source base station, the system on a chip comprising: the communication interface, the memory and the processor are interconnected through a bus, and the processor calls instructions stored in the memory to execute the operation of the source base station in the method provided by the first aspect of the application.

A fourteenth aspect of the present application provides a system on chip, where the system is applicable to a terminal device, the system on chip includes: the system comprises at least one communication interface, at least one processor and at least one memory, wherein the communication interface, the memory and the processor are interconnected through a bus, and the processor calls instructions stored in the memory to execute the operation of the terminal equipment in the method provided by the second aspect of the application.

A fifteenth aspect of the present application provides a system on a chip, the system being applicable to a target base station, the system on a chip comprising: at least one communication interface, at least one processor, and at least one memory, wherein the communication interface, the memory, and the processor are interconnected by a bus, and the processor invokes instructions stored in the memory to perform the operations of the target base station in the method provided by the third aspect of the present application.

According to the cell switching method and device for unlicensed uplink transmission, a source base station acquires first unlicensed transmission configuration information by including switching type information in a switching request message sent to a target base station, wherein the switching type information is used for indicating that terminal equipment supports unlicensed transmission and characteristics of unlicensed service of the terminal equipment, the first unlicensed transmission configuration information includes information of a first unlicensed transmission resource and configuration information of a first uplink air interface transmission parameter, the terminal equipment and the target base station perform unlicensed transmission and use, and sends a switching command message to the terminal equipment, and the switching command message includes the first unlicensed transmission configuration information. The terminal equipment acquires the first unauthorized transmission configuration information used for communicating with the target base station in advance, so that blind detection of the target base station on unauthorized services of the terminal equipment is reduced, and correct receiving of the unauthorized services is guaranteed.

Drawings

Fig. 1 is a schematic diagram of a network architecture suitable for use in the embodiments of the present application;

fig. 2 is a flowchart of a cell handover method for unlicensed uplink transmission according to an embodiment;

fig. 3 is a signaling flowchart of a cell switching method for unlicensed uplink transmission according to a second embodiment;

fig. 4 is a signaling flowchart of a cell switching method for unlicensed uplink transmission according to a third embodiment;

fig. 5 is a signaling flowchart of a cell switching method for unlicensed uplink transmission according to a fourth embodiment;

fig. 6 is a schematic structural diagram of a source base station according to the fifth embodiment;

fig. 7 is a schematic structural diagram of a terminal device according to a sixth embodiment;

fig. 8 is a schematic structural diagram of a target base station according to a seventh embodiment;

fig. 9 is a schematic structural diagram of a source base station according to an eighth embodiment.

Fig. 10 is a schematic structural diagram of a terminal device according to the ninth embodiment.

Fig. 11 is a schematic structural diagram of a terminal device according to a tenth embodiment.

Detailed Description

Fig. 1 is a schematic diagram of a network architecture applicable to the embodiment of the present application, and as shown in fig. 1, the network architecture includes two base stations: the base station comprises a source base station, a target base station and at least one terminal device, wherein the source base station is a base station which serves the terminal device at present, the target base station is a base station which needs to be switched by the terminal device, and a source cell where the source base station is located and a target cell where the target base station is located can be a same-frequency cell, can also be a different-frequency cell, and can also be a different-system cell. In the network architecture shown in fig. 1, the source base station and the target base station are two different base stations, and it should be noted that the method of the present application may also be applied to a scenario in which the source base station and the target base station are the same base station, that is, the source cell and the target cell belong to different cells of the same base station.

It should be clear that the source Base Station and the target Base Station mentioned in the present application may be Base Transceiver Stations (BTS) of a Global System for Mobile communication (GSM) System or a Code Division Multiple Access (CDMA) System, may also be Base stations (NodeB, NB) of a Wideband Code Division Multiple Access (WCDMA) System, and may also be evolved Base stations (evolved node bs, eNB) of a Long Term Evolution (LTE) System, an Access Point (AP) or a relay station may also be a base station (e.g., a gNB or a Transmission Point (TRP)) in a fifth Generation mobile communication (5G) system, and may also be a wireless controller, a wearable device or an in-vehicle device in a Cloud Radio Access Network (CRAN) scenario. And is not limited herein. The 5G system is also referred to as a New wireless communication system, a New access technology (New Radio), or a next generation mobile communication system.

The base station may include an indoor Baseband processing Unit (BBU) and a Remote Radio Unit (RRU), the RRU is connected to an antenna feed system (i.e., an antenna), and the BBU and the RRU may be detached for use as needed. It should be noted that, in the specific implementation process, the base station may also adopt other general hardware architectures.

A terminal device referred to in this application may be a User Equipment (UE), an access terminal, a UE unit, a UE station, a mobile station, a distant station, a remote terminal, a mobile device, a UE terminal, a wireless communication device, a UE agent, or a UE device, etc. But may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication capability, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal in a future 5G Network or a terminal in a future evolved Public Land Mobile Network (PLMN), etc.

Fig. 2 is a flowchart of a cell handover method for unlicensed uplink transmission according to an embodiment, as shown in fig. 2, the method provided in this embodiment includes the following steps:

step S101, a source base station sends a switching request message to a target base station, wherein the switching request message comprises switching type information, and the switching type information is used for indicating that terminal equipment supports unauthorized transmission and the characteristics of unauthorized service of the terminal equipment.

And the source base station determines that the terminal equipment needs to perform cell switching, and then sends a switching request message to the target base station, wherein the source base station can determine whether to perform cell switching according to the measurement result of the terminal equipment, and the measurement result comprises one or more of signal quality, signal strength and load condition of the source base station and the target base station. Illustratively, the source base station determines to perform cell handover when the signal quality of the source base station is lower than a first threshold and the signal quality of the target base station is higher than a second threshold.

The handover type information is used for the target base station to allocate the unauthorized transmission resource used by the unauthorized transmission for the terminal equipment. The source base station may indicate whether the terminal device supports the unauthorized transmission through a handover type indication bit (bit), for example, when the value of the handover type indication bit is 1, it indicates that the terminal device supports the unauthorized transmission, and when the value of the handover type indication bit is 0, it indicates that the terminal device does not support the unauthorized transmission. The characteristics of the unlicensed service are, for example: packet traffic, low latency traffic, etc. The unauthorized transmission service refers to a service transmitted on an unauthorized transmission resource, the unauthorized transmission resource used by the terminal equipment is configured in advance by the base station, and the unauthorized transmission resource does not need to be requested from the base station every time the service is transmitted subsequently.

Optionally, the handover request message further includes second unauthorized transmission configuration information, where the second unauthorized transmission configuration information includes: and the terminal equipment and the source base station carry out unauthorized transmission to use the information of the second unauthorized transmission resource and the configuration information of the second uplink air interface transmission parameter. The information of the second unlicensed transmission resource may be an index of the second unlicensed transmission resource or time-frequency resource information, and the time-frequency resource includes a time-frequency resource and a frequency-frequency resource. If the corresponding relationship between the index of the unauthorized transmission resource and the time-frequency resource is pre-configured on each base station and the terminal equipment, the source base station can only carry the index of the second unauthorized transmission resource in the switching request message, and the target base station can determine the time-frequency resource information used by the unauthorized transmission between the source base station and the terminal according to the index of the second unauthorized transmission resource. If the corresponding relationship between the index of the unauthorized transmission resource and the time-frequency resource is not configured on each base station and the terminal equipment, the source base station needs to carry the time-frequency resource information used for the unauthorized transmission between the source base station and the terminal in the switching request message.

The next generation Mobile Communication system needs to support a large number of scenarios and service types, and different scenarios and services have different requirements, such as Enhanced Mobile Broadband (eMBB) service requiring higher data rate, large-scale Machine Type Communication (MTC) service requiring a large number of connections, and ultra-Reliable and Low Latency Communication (urrllc) service requiring Low Latency and high reliability. Obviously, an air interface technology can not satisfy all scenes and services, so that a Soft air interface technology Soft-AI is introduced into a next generation mobile communication system, thereby being capable of matching various services and different application scenes.

In this embodiment, the second uplink air interface transmission parameter includes at least one of an uplink waveform, a multiple access mode, a modulation and coding mode, a radio frame structure, a power control related parameter, a subcarrier interval, and a Cyclic Prefix (CP) length. The uplink waveform includes single carrier Discrete Fourier Transform Spread spectrum Orthogonal Frequency Division multiplexing (DFT-S-OFDM) or multi-carrier Cyclic Prefix Orthogonal Frequency Division multiplexing (Cyclic Prefix Orthogonal Frequency Division multiplexing, CP-OFDM. Multiple Access approach includes Orthogonal Frequency Division Multiple Access (OFDMA) or Non-Orthogonal Multiple Access (nom-Orthogonal Multiple Access, NOMA.) the uplink waveform includes Demodulation Reference Signal (DMRS) configuration At least one of power domain overlay patterns.

The configuration information of the second uplink air interface transmission parameter may be an index of the second uplink air interface transmission parameter, different indexes correspond to different uplink air interface transmission parameters, and a corresponding relationship between the index and the second uplink air interface transmission parameter is configured in advance on the terminal device and the base station. The configuration information of the second uplink air interface transmission parameter may also be a specific value of the uplink air interface parameter. The uplink waveform and the multiple access mode in the second uplink air interface transmission parameter are semi-static parameters, and the semi-static parameters may be configured through a high-level signaling, for example, a Radio Resource Control (RRC) signaling. The subcarrier interval, the CP length, the radio frame structure and the power control related parameters are dynamic parameters, and the dynamic parameters change continuously along with time and need to be dynamically updated in real time.

If the terminal device is performing the unauthorized service, the handover request message may also carry a Buffer Status Report (BSR) of the unauthorized service of the terminal device, where the BSR is used to notify the target base station of the size of the data volume in the uplink unauthorized service Buffer of the terminal device.

Step S102, the source base station receives a switching response sent by the target base station, wherein the switching response comprises first unauthorized transmission configuration information.

The first unauthorized transmission configuration information includes: and the terminal equipment and the target base station carry out unauthorized transmission to use the information of the first unauthorized transmission resource and the configuration information of the first uplink air interface transmission parameter. The first unauthorized transmission configuration information is determined by the target base station according to the content included in the handover request message sent by the terminal equipment.

For example, when the characteristic of the unlicensed service of the terminal device is a packet service, the target base station may select an unlicensed transmission resource in which an uplink waveform is a single carrier (DFT-S-OFDM) and a multiple access mode is NOMA, a subcarrier interval is small and a CP length is large. When the characteristic of the unauthorized service of the terminal equipment is low-delay service, the target base station can select that the uplink waveform is multi-carrier (CP-OFDM), the multiple access mode is OFDMA, the subcarrier interval is large, and the CP length is small.

If the handover request message further includes the BSR of the unlicensed service of the terminal device and/or the second unlicensed transmission configuration information, the target base station may further determine the first unlicensed transmission configuration information according to the BSR of the unlicensed service of the terminal device and/or the second unlicensed transmission configuration information. For example, the target base station obtains the current uplink traffic volume of the terminal device according to the BSR of the unlicensed service of the terminal device, and allocates an unlicensed transmission resource with a suitable size to the terminal device according to the uplink traffic volume. And after determining the first unauthorized transmission configuration information, the target base station carries the first unauthorized transmission configuration information in a switching response and sends the switching response to the source base station.

Step S103, the source base station sends a switching command message to the terminal equipment, wherein the switching command message comprises first unauthorized transmission configuration information.

After receiving the switching command information, the terminal equipment sends an unauthorized service to the target base station according to the first unauthorized transmission configuration information used by the target base station if the terminal equipment has an uplink data sending requirement and allows the unauthorized mode to be used for uplink data transmission.

In this embodiment, a source base station sends a handover request message to a target base station, where the handover request message includes handover type information, where the handover type information is used to indicate that a terminal device supports unauthorized transmission and characteristics of an unauthorized service of the terminal device, and receive a handover response sent by the target base station, where the handover response includes first unauthorized transmission configuration information, where the first unauthorized transmission configuration information includes: the terminal equipment and the target base station perform unauthorized transmission to use the information of the first unauthorized transmission resource and the configuration information of the first uplink air interface transmission parameter, and send a switching command message to the terminal equipment, wherein the switching command message comprises the first unauthorized transmission configuration information. The terminal equipment acquires the first unauthorized transmission configuration information of the target base station in advance, so that blind detection of the target base station on unauthorized services of the terminal equipment is reduced, and correct receiving of the unauthorized services is guaranteed.

On the basis of the first embodiment, fig. 3 is a signaling flowchart of the cell handover method for unlicensed uplink transmission provided by the second embodiment, and as shown in fig. 3, the method provided by the present embodiment includes the following steps:

step S201, the source base station determines to perform cell switching on the terminal device.

Step S202, the source base station sends a switching request message to the target base station, wherein the switching request message comprises switching type information and second unauthorized transmission configuration information.

The handover type information is used to indicate that the terminal device supports the unauthorized transmission and the characteristics of the unauthorized service of the terminal device. The second unauthorized transmission configuration information includes: and the terminal equipment and the source base station carry out unauthorized transmission to use the information of the second unauthorized transmission resource and the configuration information of the second uplink air interface transmission parameter. If the terminal device is currently performing the unauthorized service, the handover request message may further include a BSR of the unauthorized service of the terminal device.

Step S203, the target base station sends a handover response to the source base station, where the handover response includes the first unauthorized transmission configuration information and the transmission power of the pilot signal of the target base station.

The first unauthorized transmission configuration information includes: and the terminal equipment and the target base station carry out unauthorized transmission to use the information of the first unauthorized transmission resource and the configuration information of the first uplink air interface transmission parameter. The transmission power of the pilot signal of the target base station is used for the source base station to determine the time advance of the terminal equipment at the target base station.

Step S204, the source base station determines the time advance of the terminal equipment in the target base station according to the sending power of the pilot signal of the target base station.

Specifically, the source base station obtains Reference Signal Receiving Power (RSRP) of the source base station, RSRP of the target base station, transmission Power of a pilot Signal of the source base station, and transmission Power of a pilot Signal of the target base station according to measurement of the terminal device, and determines a time advance of the terminal device in the target base station. For example, the time advance of the terminal device at the target base station may be calculated by the following formula:

TA_t，ue＝TA_s，ueα(P_pilot，t-RSRP_t，ue)/(P_pilot，s-RSRP_s，ue)

wherein, RSRP_s，ueIndicating the RSRP of the source base station measured by the terminal equipment_t，ueIndicating the measured target base station's RSRP, P_pilot，sIndicating the transmission power, P, of the pilot signal of the source base station_pilot，tIndicating the transmission power of the pilot signal of the target base station, TA_s，ueThe time advance of the terminal device in the source base station is represented, α represents a correction parameter of a transmission model of the source base station, and may be set to 1, and α may be sent to the source base station by the target base station or acquired from the network management system by the source base station.

Step S205, the source base station sends a handover command message to the terminal device, where the handover command message includes the first unauthorized transmission configuration information and the time advance of the terminal device in the target base station.

And step S206, the terminal equipment sends the unauthorized service to the target base station according to the first unauthorized transmission configuration information and the time advance of the terminal equipment in the target base station.

After receiving the switching command information, the terminal equipment sends an unauthorized service to the target base station according to the first unauthorized transmission configuration information used by the target base station and the time lead of the terminal equipment in the target base station if the terminal equipment has an uplink data sending requirement and allows the unauthorized mode to be used for uplink data transmission.

In the embodiment, in the cell switching process, the terminal device obtains the first unauthorized transmission configuration information of the target base station in advance, so that blind detection of the target base station on the unauthorized service of the terminal device is reduced, and correct receiving of the unauthorized service is ensured. In addition, the source base station also determines the time lead of the terminal equipment in the target base station for the terminal equipment, and sends the time lead of the terminal equipment in the target base station to the terminal equipment, so that the terminal equipment can directly send uplink unauthorized service after being switched to the target base station, thereby ensuring time delay and reducing interference in a cell.

On the basis of the first embodiment, fig. 4 is a signaling flowchart of a cell handover method for unlicensed uplink transmission provided by the third embodiment, as shown in fig. 4, the method provided by the present embodiment includes the following steps:

step S301, the source base station determines to perform cell switching on the terminal equipment.

Step S302, the source base station sends a switching request message to the target base station, wherein the switching request message comprises switching type information, second unauthorized transmission configuration information and RSRP of the target base station.

The handover type information is used to indicate that the terminal device supports the unauthorized transmission and the characteristics of the unauthorized service of the terminal device. The second unauthorized transmission configuration information includes: and the terminal equipment and the source base station carry out unauthorized transmission to use the information of the second unauthorized transmission resource and the configuration information of the second uplink air interface transmission parameter. If the terminal device is currently performing the unauthorized service, the handover request message may further include a BSR of the unauthorized service of the terminal device. And the RSRP of the target base station is measured by the terminal equipment and is sent to the source base station.

Step S303, the target base station determines the time advance of the terminal equipment in the target base station according to the RSRP of the target base station measured by the terminal equipment.

Specifically, the target base station may determine the timing advance of the terminal device in the target base station according to an RSRP of the target base station measured by the terminal device, an RSRP of the target base station measured by a first terminal device served by the target base station, a transmission power of a pilot signal of the target base station, and the timing advance of the first terminal device in the target base station. For example, the target base station may calculate the time advance of the terminal device at the target base station according to the following formula:

TA_t，ue＝TA_t，ue’(P_pilot，t-RSRP_t，ue)/(P_pilot，t-RSRP_t，ue’)

wherein, RSRP_t，ueIndicating the RSRP of the target base station measured by the terminal equipment for handover_t，ue’Indicating the RSRP, P of the target base station measured by the first terminal device_pilot，tIndicating the transmission power of the pilot signal of the target base station, TA_t，ueIndicating the timing advance, TA, of the terminal equipment in handover at the target base station_t，ue’Indicating the timing advance of the first terminal device at the target base station.

Step S304, the target base station sends a switching response to the source base station, wherein the switching response comprises the first unauthorized transmission configuration information and the time advance of the terminal equipment in the target base station.

The first unauthorized transmission configuration information includes: and the terminal equipment and the target base station carry out unauthorized transmission to use the information of the first unauthorized transmission resource and the configuration information of the first uplink air interface transmission parameter.

Step S305, the source base station sends a switching command message to the terminal equipment, wherein the switching command message comprises first unauthorized transmission configuration information and the time advance of the terminal equipment in the target base station.

Step S306, the terminal equipment sends the unauthorized service to the target base station according to the first unauthorized transmission configuration information and the time advance of the terminal equipment in the target base station.

In the embodiment, in the cell switching process, the terminal device obtains the first unauthorized transmission configuration information of the target base station in advance, so that blind detection of the target base station on the unauthorized service of the terminal device is reduced, and correct receiving of the unauthorized service is ensured. In addition, the target base station also determines the time lead of the terminal equipment in the target base station according to the RSRP of the target base station measured by the terminal equipment, and sends the time lead of the terminal equipment in the target base station to the terminal equipment, so that the terminal equipment can directly send uplink unauthorized service after being switched to the target base station, thereby ensuring time delay and reducing interference in a cell.

On the basis of the first embodiment, fig. 5 is a signaling flowchart of a cell handover method for unlicensed uplink transmission according to the fourth embodiment, and as shown in fig. 5, the method according to the present embodiment includes the following steps:

step S401, the source base station determines to perform cell switching on the terminal equipment.

Step S402, the source base station sends a switching request message to the target base station, wherein the switching request message comprises switching type information and second unauthorized transmission configuration information.

Step S403, the target base station sends a handover response to the source base station, where the handover response includes the first unauthorized transmission configuration information and the uplink synchronization resource of the target base station.

Step S404, the source base station sends a switching command message to the terminal equipment, wherein the switching command message comprises first unauthorized transmission configuration information and uplink synchronous resources of the target base station.

Step S405, the terminal equipment sends signals on the uplink synchronous resource of the target base station.

After receiving the switching command message, the terminal equipment sends an information sending signal on the uplink synchronous resource of the target base station if the terminal equipment has an uplink data sending requirement and allows the use of an unauthorized mode for uplink data transmission.

Step S406, the target base station determines the time advance of the terminal equipment in the target base station according to the signal received on the uplink synchronous resource,

step S407, the target base station sends the time advance of the terminal equipment in the target base station to the terminal equipment.

Step S408, the terminal equipment sends the unauthorized service to the target base station according to the first unauthorized transmission configuration information and the time advance of the terminal equipment in the target base station.

In the embodiment, in the cell switching process, the terminal device obtains the first unauthorized transmission configuration information of the target base station in advance, so that blind detection of the target base station on the unauthorized service of the terminal device is reduced, and correct receiving of the unauthorized service is ensured. In addition, the target base station sends the uplink synchronous resource of the target base station to the terminal equipment, the terminal equipment sends a signal on the uplink synchronous resource, the target base station determines the time lead of the terminal equipment on the target base station according to the signal sent on the uplink synchronous resource and sends the time lead of the terminal equipment on the target base station to the terminal equipment, so that the terminal equipment can directly send uplink unauthorized service after being switched to the target base station, the time delay is ensured, and the interference in a cell is reduced.

Fig. 6 is a schematic structural diagram of a source base station provided in the fifth embodiment, and as shown in fig. 6, the source base station provided in this embodiment includes:

a sending module 11, configured to send a handover request message to a target base station, where the handover request message includes handover type information, and the handover type information is used to indicate that a terminal device supports unauthorized transmission and characteristics of an unauthorized service of the terminal device;

a receiving module 12, configured to receive a handover response sent by a target base station, where the handover response includes first unauthorized transmission configuration information, and the first unauthorized transmission configuration information includes: the terminal equipment and the target base station perform unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter, wherein the information of the first unauthorized transmission resource and the configuration information of the first uplink air interface transmission parameter are determined by the target base station according to the characteristics of the unauthorized service;

the sending module 11 is further configured to send a handover command message to the terminal device, where the handover command message includes the first unauthorized transmission configuration information.

Optionally, the handover response further includes a transmission power of a pilot signal of the target base station, and the handover command message further includes a timing advance of the terminal device in the target base station, so that the source base station further includes a determining module, and the determining module is configured to determine the timing advance of the terminal device in the target base station according to the transmission power of the pilot signal of the target base station.

Optionally, the handover request message further includes second unauthorized transmission configuration information, where the second unauthorized transmission configuration information includes: and the terminal equipment and the source base station perform unauthorized transmission to use the information of the second unauthorized transmission resource and the configuration information of the second uplink air interface transmission parameter. Further, the handover request message further includes a BSR of the unlicensed service of the terminal device.

Optionally, the first uplink air interface transmission parameter or the second uplink air interface parameter includes at least one of an uplink waveform, a multiple access mode, a modulation and coding mode, a radio frame structure, a power control related parameter, a subcarrier interval, and a cyclic prefix CP length. The uplink waveform comprises single carrier DFT-S-OFDM or multi-carrier CP-OFDM; the multiple access mode comprises OFDMA or NOMA; the radio frame structure comprises a DMRS configuration; the power control related parameters comprise uplink maximum transmitting power, a receiving power level expected by a base station, a path loss compensation factor or a power adjustment amount.

Fig. 7 is a schematic structural diagram of a terminal device provided in a sixth embodiment, and as shown in fig. 7, the terminal device provided in this embodiment includes:

a receiving module 21, configured to receive a handover command message sent by a source base station, where the handover command message includes first unauthorized transmission configuration information, and the first unauthorized transmission configuration information includes: the terminal equipment and the target base station perform unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter;

a sending module 22, configured to send an unauthorized service to the target base station according to the first unauthorized transmission configuration information.

Optionally, the handover command message includes: and the time advance of the terminal equipment at the target base station is determined by the source base station or the target base station. The sending module 22 is specifically configured to: and sending an unauthorized service to the target base station according to the first unauthorized transmission configuration information and the time advance.

Optionally, the handover command message includes: and the uplink synchronous resource of the target base station. Correspondingly, the sending module 22 is further configured to send a signal on the uplink synchronization resource of the target base station; the receiving module 21 is further configured to receive a timing advance of the terminal device at the target base station, where the timing advance of the terminal device at the target base station is determined by the target base station according to a signal sent by the terminal device on an uplink synchronization resource of the target base station. The sending module 22 sends an unauthorized service to the target base station according to the first unauthorized transmission configuration information, specifically: and sending an unauthorized service to a target base station according to the first unauthorized transmission configuration information and the time advance of the terminal equipment in the target base station.

Fig. 8 is a schematic structural diagram of a target base station according to a seventh embodiment, and as shown in fig. 8, the target base station according to the present embodiment includes:

a receiving module 31, configured to receive a handover request message sent by a source base station, where the handover request message includes handover type information, and the handover type information is used to indicate that a terminal device supports unauthorized transmission and characteristics of an unauthorized service of the terminal device;

a processing module 32, configured to determine first unauthorized transmission configuration information according to a characteristic of the unauthorized service, where the first unauthorized transmission configuration information includes: the terminal equipment and the target base station perform unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter;

a sending module 33, configured to send a handover response to the source base station, where the handover response includes the first unauthorized transmission configuration information.

Optionally, the handover request further includes RSRP of the target base station measured by the terminal device, the handover response further includes a time advance of the terminal device in the target base station, and the processing module 32 is further configured to: and determining the time advance of the terminal equipment in the target base station according to the RSRP of the target base station measured by the terminal equipment.

Fig. 9 is a schematic structural diagram of a source base station according to an eighth embodiment, and as shown in fig. 9, a source base station 400 according to this embodiment includes: a processor 41, a memory 42, a receiver 43, and a transmitter 44, where the memory 42, the receiver 43, and the transmitter 44 are connected to and communicate with the processor 41 through a bus, the memory 42 is configured to store computer-executable instructions, and the processor 41 is configured to execute the computer-executable instructions, so that the source base station 400 performs the steps performed by the source base station in the methods provided in the first to fourth embodiments, specifically:

a transmitter 44, configured to send a handover request message to a target base station, where the handover request message includes handover type information, and the handover type information is used to indicate that a terminal device supports unauthorized transmission and characteristics of an unauthorized service of the terminal device;

a receiver 43, configured to receive a handover response sent by a target base station, where the handover response includes first unauthorized transmission configuration information, and the first unauthorized transmission configuration information includes: the terminal equipment and the target base station perform unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter, wherein the information of the first unauthorized transmission resource and the configuration information of the first uplink air interface transmission parameter are determined by the target base station according to the characteristics of the unauthorized service;

the transmitter 44 is further configured to send a handover command message to the terminal device, where the handover command message includes the first unauthorized transmission configuration information.

Optionally, the handover response further includes a transmission power of a pilot signal of the target base station, the handover command message further includes a timing advance of the terminal device in the target base station, and the processor 41 is configured to determine the timing advance of the terminal device in the target base station according to the transmission power of the pilot signal of the target base station.

Fig. 10 is a schematic structural diagram of a terminal device according to the ninth embodiment, and as shown in fig. 10, a terminal device 500 according to the present embodiment includes: the processor 51, the memory 52, the receiver 53 and the transmitter 54 are connected to and communicate with the processor 51 through a bus, the memory 52 is used for storing computer execution instructions, and the processor 51 is used for executing the computer execution instructions, so that the terminal device 500 performs the steps performed by the terminal device in the methods provided in the first to fourth embodiments, specifically:

a receiver 53, configured to receive a handover command message sent by a source base station, where the handover command message includes first unauthorized transmission configuration information, and the first unauthorized transmission configuration information includes: the terminal device and the target base station perform unauthorized transmission to use the information of the first unauthorized transmission resource and the configuration information of the first uplink air interface transmission parameter

A transmitter 54, configured to transmit an unlicensed service to the target base station according to the first unlicensed transmission configuration information.

Optionally, the handover command message includes: a timing advance of the terminal device at the target base station, the timing advance being determined by the source base station or the target base station; the transmitter 54 is specifically configured to: and sending an unauthorized service to the target base station according to the first unauthorized transmission configuration information and the time advance.

Optionally, the handover command message includes: uplink synchronization resources of the target base station; the transmitter 54 is further configured to transmit a signal on the uplink synchronization resource of the target base station; the receiver 53 is further configured to receive a timing advance of the terminal device at the target base station, where the timing advance of the terminal device at the target base station is determined by the target base station according to a signal sent by the terminal device on an uplink synchronization resource of the target base station; the transmitter 54 transmits an unauthorized service to the target base station according to the first unauthorized transmission configuration information, specifically: and sending an unauthorized service to a target base station according to the first unauthorized transmission configuration information and the time advance of the terminal equipment in the target base station.

Fig. 11 is a schematic structural diagram of a target base station according to a tenth embodiment, and as shown in fig. 11, a target base station 600 according to the present embodiment includes: a processor 61, a memory 62, a receiver 63, and a transmitter 64, where the memory 62, the receiver 63, and the transmitter 64 are connected to and communicate with the processor 61 through a bus, the memory 62 is configured to store computer-executable instructions, and the processor 61 is configured to execute the computer-executable instructions, so that the target base station 600 performs the steps performed by the terminal device in the methods provided in the first to fourth embodiments, specifically:

a receiver 63, configured to receive a handover request message sent by a source base station, where the handover request message includes handover type information, and the handover type information is used to indicate that a terminal device supports unauthorized transmission and characteristics of an unauthorized service of the terminal device;

a processor 61, configured to determine first unauthorized transmission configuration information according to a characteristic of the unauthorized service, where the first unauthorized transmission configuration information includes: the terminal equipment and the target base station perform unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter;

a transmitter 64, configured to send a handover response to the source base station, where the handover response includes the first unauthorized transmission configuration information.

Optionally, the handover request further includes RSRP of the target base station measured by the terminal device, and the handover response further includes a time advance of the terminal device at the target base station, where the processor 61 is further configured to: and determining the time advance of the terminal equipment in the target base station according to the RSRP of the target base station measured by the terminal equipment.

It is understood that the processor in the present application may be a Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others.

The bus described herein may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.

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

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

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

Claims

1. A cell switching method for unauthorized uplink transmission is characterized by comprising the following steps:

the source base station sends a switching command message to the terminal equipment, wherein the switching command message comprises the first unauthorized transmission configuration information;

wherein the first uplink air interface transmission parameter includes an uplink waveform.

2. The method of claim 1, wherein the handover response further includes a transmission power of a pilot signal of the target base station, and wherein the handover command message further includes a timing advance of the terminal device at the target base station, the method further comprising:

3. The method of claim 1, wherein the handover response further comprises a timing advance of the terminal device at the target base station.

4. The method of claim 1, wherein the handover response and the handover command message further include uplink synchronization resources of the target base station.

5. The method according to any of claims 1-4, wherein the handover request message further includes second unauthorized transmission configuration information, and the second unauthorized transmission configuration information includes: and the terminal equipment and the source base station perform unauthorized transmission to use the information of the second unauthorized transmission resource and the configuration information of the second uplink air interface transmission parameter.

6. The method of claim 5, wherein the handover request message further includes a Buffer Status Report (BSR) of the unlicensed service of the terminal device.

7. The method of claim 1, wherein the first uplink air-interface transmission parameters further include at least one of a multiple access scheme, a modulation and coding scheme, a radio frame structure, power control related parameters, a subcarrier spacing, and a Cyclic Prefix (CP) length.

8. The method of claim 7, wherein the uplink waveform comprises single carrier discrete fourier transform spread spectrum orthogonal frequency division multiplexing DFT-S-OFDM or multi-carrier cyclic prefix orthogonal frequency division multiplexing CP-OFDM; the multiple access mode comprises orthogonal frequency division multiple access OFDMA or non-orthogonal multiple access NOMA; the radio frame structure comprises a demodulation reference signal (DMRS) configuration; the power control related parameters comprise uplink maximum transmitting power, a receiving power level expected by a base station, a path loss compensation factor or a power adjustment amount.

9. A cell switching method for unauthorized uplink transmission is characterized by comprising the following steps:

a terminal device receives a handover command message sent by a source base station, wherein the handover command message includes first unauthorized transmission configuration information, and the first unauthorized transmission configuration information includes: the terminal equipment and the target base station carry out unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter; wherein the first uplink air interface transmission parameter comprises an uplink waveform;

10. The method of claim 9, wherein the handover command message comprises: a timing advance of the terminal device at the target base station, the timing advance being determined by the source base station or the target base station;

11. The method of claim 9, wherein the handover command message comprises: uplink synchronization resources of the target base station;

12. The method of claim 9, wherein the first uplink air-interface transmission parameters further include at least one of a multiple access scheme, a modulation and coding scheme, a radio frame structure, power control related parameters, a subcarrier spacing, and a Cyclic Prefix (CP) length.

13. The method of claim 12, wherein the uplink waveform comprises single carrier discrete fourier transform spread spectrum orthogonal frequency division multiplexing DFT-S-OFDM or multi-carrier cyclic prefix orthogonal frequency division multiplexing CP-OFDM; the multiple access mode comprises orthogonal frequency division multiple access OFDMA or non-orthogonal multiple access NOMA; the radio frame structure comprises a demodulation reference signal (DMRS) configuration; the power control related parameters comprise uplink maximum transmitting power, a receiving power level expected by a base station, a path loss compensation factor or a power adjustment amount.

14. A cell switching method for unauthorized uplink transmission is characterized by comprising the following steps:

the target base station determines first unauthorized transmission configuration information according to the characteristics of the unauthorized service, wherein the first unauthorized transmission configuration information comprises: the terminal equipment and the target base station perform unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter; the first uplink air interface transmission parameter comprises an uplink waveform;

15. The method of claim 14, wherein the handover request further includes RSRP of the target base station measured by the terminal device, and the handover response further includes a timing advance of the terminal device at the target base station, then the method further comprises:

16. The method of claim 14, wherein the handover response further includes a transmission power of a pilot signal of the target base station or an uplink synchronization resource of the target base station.

17. The method according to any of claims 14-16, wherein the handover request message further includes second unlicensed transmission configuration information, and the second unlicensed transmission configuration information includes: and the terminal equipment and the source base station perform unauthorized transmission to use the information of the second unauthorized transmission resource and the configuration information of the second uplink air interface transmission parameter.

18. The method of claim 17, wherein the handover request message further includes a buffer status report BSR of the unlicensed service of the terminal device.

19. The method of claim 14, wherein the first uplink air-interface transmission parameters further include at least one of a multiple access scheme, a modulation and coding scheme, a radio frame structure, power control related parameters, a subcarrier spacing, and a Cyclic Prefix (CP) length.

20. The method of claim 19, wherein the uplink waveform comprises single carrier discrete fourier transform spread spectrum orthogonal frequency division multiplexing DFT-S-OFDM or multi-carrier cyclic prefix orthogonal frequency division multiplexing CP-OFDM; the multiple access mode comprises orthogonal frequency division multiple access OFDMA or non-orthogonal multiple access NOMA; the radio frame structure comprises a demodulation reference signal (DMRS) configuration; the power control related parameters comprise uplink maximum transmitting power, a receiving power level expected by a base station, a path loss compensation factor or a power adjustment amount.

21. A source base station, comprising:

a receiver, configured to receive a handover response sent by a target base station, where the handover response includes first unauthorized transmission configuration information, and the first unauthorized transmission configuration information includes: the terminal device and the target base station perform unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter, wherein the information of the first unauthorized transmission resource and the configuration information of the first uplink air interface transmission parameter are determined by the target base station according to the characteristics of the unauthorized service, and the first uplink air interface transmission parameter comprises an uplink waveform;

22. The source base station of claim 21, wherein the handover response further includes a transmission power of a pilot signal of the target base station, and wherein the handover command message further includes a timing advance of the terminal device at the target base station, then the source base station further includes:

23. The source base station of claim 21, wherein the handover response further includes a timing advance of the terminal device at the target base station.

24. The source base station of claim 21, wherein the handover response and the handover command message further include uplink synchronization resources of the target base station.

25. The source base station of any of claims 21-24, wherein the handover request message further comprises second unlicensed transmission configuration information, and wherein the second unlicensed transmission configuration information comprises: and the terminal equipment and the source base station perform unauthorized transmission to use the information of the second unauthorized transmission resource and the configuration information of the second uplink air interface transmission parameter.

26. The source base station of claim 25, wherein the handover request message further includes a buffer status report BSR of the unlicensed service of the terminal device.

27. The source base station according to any of claims 21 to 24, wherein the first uplink air-interface transmission parameters further include at least one of a multiple access scheme, a modulation and coding scheme, a radio frame structure, a power control related parameter, a subcarrier spacing, and a Cyclic Prefix (CP) length.

28. The source base station of claim 27, wherein the uplink waveform comprises single carrier discrete fourier transform spread spectrum orthogonal frequency division multiplexing DFT-S-OFDM or multi-carrier cyclic prefix orthogonal frequency division multiplexing CP-OFDM; the multiple access mode comprises orthogonal frequency division multiple access OFDMA or non-orthogonal multiple access NOMA; the radio frame structure comprises a demodulation reference signal (DMRS) configuration; the power control related parameters comprise uplink maximum transmitting power, a receiving power level expected by a base station, a path loss compensation factor or a power adjustment amount.

29. A terminal device, comprising:

a receiver, configured to receive a handover command message sent by a source base station, where the handover command message includes first unauthorized transmission configuration information, and the first unauthorized transmission configuration information includes: the terminal equipment and a target base station perform unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter, wherein the first uplink air interface transmission parameter comprises an uplink waveform;

30. The terminal device of claim 29, wherein the handover command message comprises: a timing advance of the terminal device at the target base station, the timing advance being determined by the source base station or the target base station;

31. The terminal device of claim 29, wherein the handover command message comprises: uplink synchronization resources of the target base station;

32. The terminal device according to any one of claims 29 to 31, wherein the first uplink air-interface transmission parameters further include at least one of a multiple access scheme, a modulation and coding scheme, a radio frame structure, a power control related parameter, a subcarrier spacing, and a cyclic prefix CP length.

33. The terminal device of claim 32, wherein the uplink waveform comprises single carrier discrete fourier transform spread spectrum orthogonal frequency division multiplexing DFT-S-OFDM or multi-carrier cyclic prefix orthogonal frequency division multiplexing CP-OFDM; the multiple access mode comprises orthogonal frequency division multiple access OFDMA or non-orthogonal multiple access NOMA; the radio frame structure comprises a demodulation reference signal (DMRS) configuration; the power control related parameters comprise uplink maximum transmitting power, a receiving power level expected by a base station, a path loss compensation factor or a power adjustment amount.

34. A target base station, comprising:

a processor, configured to determine first unlicensed transmission configuration information according to a characteristic of the unlicensed service, where the first unlicensed transmission configuration information includes: the terminal equipment and the target base station perform unauthorized transmission to use information of a first unauthorized transmission resource and configuration information of a first uplink air interface transmission parameter, wherein the first uplink air interface transmission parameter comprises an uplink waveform;

35. The target base station of claim 34, wherein the handover request further includes RSRP of the target base station measured by the terminal device, and the handover response further includes a timing advance of the terminal device at the target base station, and wherein the processor is further configured to:

36. The target base station of claim 34, wherein the handover response further comprises a transmission power of a pilot signal of the target base station or an uplink synchronization resource of the target base station.

37. The target base station of any of claims 34-36, wherein the handover request message further comprises second unlicensed transmission configuration information, and wherein the second unlicensed transmission configuration information comprises: and the terminal equipment and the source base station perform unauthorized transmission to use the information of the second unauthorized transmission resource and the configuration information of the second uplink air interface transmission parameter.

38. The target base station of claim 37, wherein the handover request message further includes a buffer status report BSR of the unlicensed service of the terminal device.

39. The target base station according to any of claims 34-36, wherein the first uplink air-interface transmission parameters further include at least one of multiple access scheme, modulation and coding scheme, radio frame structure, power control related parameters, subcarrier spacing, and Cyclic Prefix (CP) length.

40. The target base station of claim 39, wherein the uplink waveform comprises single carrier discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) or multi-carrier cyclic prefix orthogonal frequency division multiplexing (CP-OFDM); the multiple access mode comprises orthogonal frequency division multiple access OFDMA or non-orthogonal multiple access NOMA; the radio frame structure comprises a demodulation reference signal (DMRS) configuration; the power control related parameters comprise uplink maximum transmitting power, a receiving power level expected by a base station, a path loss compensation factor or a power adjustment amount.