CN116391447A

CN116391447A - Wireless communication method, terminal device and network device

Info

Publication number: CN116391447A
Application number: CN202180074757.3A
Authority: CN
Inventors: 李海涛
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2023-07-04
Also published as: WO2022198544A1

Abstract

The embodiment of the application provides a wireless communication method, terminal equipment and network equipment. The method comprises the following steps: cell selection and/or cell reselection based on the first adjustment amount; wherein the first adjustment amount is used to characterize an adjustment amount of a signal quality of a new cell of the terminal device when the new cell arrives compared to a signal quality of a serving cell of the terminal device when the serving cell leaves or when the new cell arrives. In the embodiment of the invention, after the configuration of the adjustment quantity is introduced, the terminal equipment can acquire the signal quality of the new cell as soon as possible when the new cell arrives, so that the situation that the signal quality of the new cell of the terminal equipment can be acquired only after the new cell starts to be measured at the moment T2 is avoided, the acquisition time of the signal quality of the new cell of the terminal equipment is shortened, the terminal equipment can be accessed into the cell faster, the service interruption time is shortened, and the communication quality is improved.

Description

Wireless communication method, terminal device and network device

Technical Field

The embodiments of the present application relate to the field of communications, and more particularly, to a wireless communication method, a terminal device, and a network device.

Background

In a New Radio (NR) system, a Non-terrestrial communication network (Non-Terrestrial Networks, NTN) is considered to provide communication services to users.

After introduction of NTN, the connection of the satellite and the terrestrial gateway is also handed off when the satellite moves at high speed. Specifically, if two terrestrial gateways are connected to two terrestrial base stations or two cells under one terrestrial base station, then all User Equipment (UE) in the area covered by the satellite need to be handed over from the original cell to a new cell after a feedback link handover (feeder link switch). However, since the distance between the satellite and the ground in the NNT is large, the signal transmission delay between the terminal device and the satellite is also large, and at this time, if the signal quality is obtained by means of radio resource management (Radio Resource Management, RRM) measurement, the required waiting time is too long, which may possibly cause service interruption and reduce the communication quality.

Thus, there is a need for a method for fast access to new cells for NTN.

Disclosure of Invention

The embodiment of the application provides a wireless communication method, terminal equipment and network equipment, which can quickly access a new cell aiming at NTN, thereby reducing service interruption and improving communication quality.

In a first aspect, an embodiment of the present application provides a wireless communication method, including:

cell selection and/or cell reselection based on the first adjustment amount;

wherein the first adjustment amount is used to characterize an adjustment amount of a signal quality of a new cell of the terminal device when the new cell arrives compared to a signal quality of a serving cell of the terminal device when the serving cell leaves or when the new cell arrives.

In a second aspect, an embodiment of the present application provides a wireless communication method, including:

transmitting configuration information of a service cell;

the configuration information comprises a first adjustment quantity, wherein the first adjustment quantity is used for representing the adjustment quantity of the signal quality of a new cell of the terminal equipment when the new cell arrives compared with the signal quality of a service cell of the terminal equipment when the service cell leaves or when the new cell arrives.

In a third aspect, the present application provides a terminal device for performing the method of the first aspect or each implementation manner thereof. Specifically, the terminal device includes a functional module for executing the method in the first aspect or each implementation manner thereof.

In one implementation, the terminal device may include a processing unit for performing functions related to information processing. For example, the processing unit may be a processor.

In one implementation, the terminal device may include a transmitting unit and/or a receiving unit. The transmitting unit is configured to perform a function related to transmission, and the receiving unit is configured to perform a function related to reception. For example, the transmitting unit may be a transmitter or a transmitter and the receiving unit may be a receiver or a receiver. For another example, the terminal device is a communication chip, the sending unit may be an input circuit or an interface of the communication chip, and the sending unit may be an output circuit or an interface of the communication chip.

In a fourth aspect, the present application provides a network device for performing the method of the second aspect or each implementation manner thereof. In particular, the network device comprises functional modules for performing the method of the second aspect or implementations thereof described above.

In one implementation, the network device may include a processing unit to perform functions related to information processing. For example, the processing unit may be a processor.

In one implementation, the network device may include a transmitting unit and/or a receiving unit. The transmitting unit is configured to perform a function related to transmission, and the receiving unit is configured to perform a function related to reception. For example, the transmitting unit may be a transmitter or a transmitter and the receiving unit may be a receiver or a receiver. For another example, the network device is a communication chip, the receiving unit may be an input circuit or an interface of the communication chip, and the transmitting unit may be an output circuit or an interface of the communication chip.

In a fifth aspect, the present application provides a terminal device comprising a processor and a memory. The memory is configured to store a computer program, and the processor is configured to invoke and execute the computer program stored in the memory, so as to perform the method in the first aspect or each implementation manner thereof.

In one implementation, the processor is one or more and the memory is one or more.

In one implementation, the memory may be integrated with the processor or separate from the processor.

In one implementation, the terminal device further includes a transmitter (transmitter) and a receiver (receiver).

In a sixth aspect, the present application provides a network device comprising a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method in the second aspect or various implementation manners thereof.

In one implementation, the network device further includes a transmitter (transmitter) and a receiver (receiver).

In a seventh aspect, the present application provides a chip for implementing the method in any one of the first aspect to the second aspect or each implementation thereof. Specifically, the chip includes: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method as in any one of the first to second aspects or implementations thereof described above.

In an eighth aspect, the present application provides a computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of the above first to second aspects or implementations thereof.

In a ninth aspect, the present application provides a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to second aspects or implementations thereof.

In a tenth aspect, the present application provides a computer program which, when run on a computer, causes the computer to perform the method of any one of the above-described first to second aspects or implementations thereof.

In the embodiment of the application, by introducing the first adjustment amount, the signal quality of the new cell of the terminal equipment can be determined directly based on the first adjustment amount, and then cell selection and/or cell reselection are performed based on the signal quality of the new cell of the terminal equipment, so that the situation that the signal quality of the new cell of the terminal equipment is measured based on RRM after the new cell arrives is avoided, and then the cell selection and/or cell reselection are performed based on the signal quality of the new cell of the terminal equipment, namely, the waiting time for acquiring the signal quality through RRM measurement is avoided; equivalently, by introducing the first adjustment amount, the waiting time for acquiring the signal quality of the new cell can be shortened, so that the terminal can acquire the signal quality of the new cell of the terminal equipment earlier, and further, the terminal can access the new cell earlier, thereby reducing service interruption and improving communication quality.

Drawings

Fig. 1 to 3 are schematic block diagrams of a system framework provided in an embodiment of the present application.

Fig. 4 and 5 show schematic diagrams of NTN scenarios based on a through-transmission-repeater satellite and a regenerative repeater satellite, respectively.

Fig. 6 is an example of a scenario in which a connection between a satellite and a terrestrial gateway is switched according to an embodiment of the present application.

Fig. 7 is a schematic flow chart of a wireless communication method provided in an embodiment of the present application.

Fig. 8 is another example of a scenario in which a connection between a satellite and a terrestrial gateway is switched according to an embodiment of the present application.

Fig. 9 is another schematic flow chart of a wireless communication method provided by an embodiment of the present application.

Fig. 10 is a schematic block diagram of a terminal device provided in an embodiment of the present application.

Fig. 11 is a schematic block diagram of a network device provided in an embodiment of the present application.

Fig. 12 is a schematic block diagram of a communication device provided in an embodiment of the present application.

Fig. 13 is a schematic block diagram of a chip provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of an application scenario according to an embodiment of the present application.

As shown in fig. 1, communication system 100 may include a terminal device 110 and a network device 120. Network device 120 may communicate with terminal device 110 over the air interface. Multi-service transmission is supported between terminal device 110 and network device 120.

It should be understood that the present embodiments are illustrated by way of example only with respect to communication system 100, but the present embodiments are not limited thereto. That is, the technical solution of the embodiment of the present application may be applied to various communication systems, for example: long term evolution (Long Term Evolution, LTE) system, LTE time division duplex (Time Division Duplex, TDD), universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), 5G communication system (also referred to as New Radio (NR) communication system), or future communication system, etc.

In the communication system 100 shown in fig. 1, the network device 120 may be an access network device in communication with the terminal device 110. The access network device may provide communication coverage for a particular geographic area and may communicate with terminal devices 110 (e.g., UEs) located within the coverage area.

The network device 120 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in a long term evolution (Long Term Evolution, LTE) system, or a next generation radio access network (Next Generation Radio Access Network, NG RAN) device, or a base station (gNB) in a NR system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device 120 may be a relay station, an access point, a vehicle device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

Terminal device 110 may be any terminal device including, but not limited to, a terminal device that employs a wired or wireless connection with network device 120 or other terminal devices.

For example, the terminal device 110 may refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolution network, etc.

The terminal Device 110 may be used for Device-to-Device (D2D) communication.

The wireless communication system 100 may further comprise a core network device 130 in communication with the base station, which core network device 130 may be a 5G core,5gc device, e.g. an access and mobility management function (Access and Mobility Management Function, AMF), further e.g. an authentication server function (Authentication Server Function, AUSF), further e.g. a user plane function (User Plane Function, UPF), further e.g. a session management function (Session Management Function, SMF). Optionally, the core network device 130 may also be a packet core evolution (Evolved Packet Core, EPC) device of the LTE network, for example a session management function+a data gateway (Session Management Function + Core Packet Gateway, smf+pgw-C) device of the core network. It should be appreciated that SMF+PGW-C may perform the functions performed by both SMF and PGW-C. In the network evolution process, the core network device may also call other names, or form a new network entity by dividing the functions of the core network, which is not limited in this embodiment of the present application.

Communication may also be achieved by establishing connections between various functional units in the communication system 100 through a next generation Network (NG) interface.

For example, the terminal device establishes an air interface connection with the access network device through an NR interface, and is used for transmitting user plane data and control plane signaling; the terminal equipment can establish control plane signaling connection with AMF through NG interface 1 (N1 for short); an access network device, such as a next generation radio access base station (gNB), can establish a user plane data connection with a UPF through an NG interface 3 (N3 for short); the access network equipment can establish control plane signaling connection with AMF through NG interface 2 (N2 for short); the UPF can establish control plane signaling connection with the SMF through an NG interface 4 (N4 for short); the UPF can interact user plane data with the data network through an NG interface 6 (N6 for short); the AMF may establish a control plane signaling connection with the SMF through NG interface 11 (N11 for short); the SMF may establish a control plane signaling connection with the PCF via NG interface 7 (N7 for short).

Fig. 1 exemplarily illustrates one base station, one core network device, and two terminal devices, alternatively, the wireless communication system 100 may include a plurality of base station devices and each base station may include other number of terminal devices within a coverage area, which is not limited in the embodiment of the present application.

In a New Radio (NR) system, a Non-terrestrial communication network (Non-Terrestrial Networks, NTN) is considered to provide communication services to users. NTN typically provides communication services to terrestrial users by way of satellite communications. Satellite communications have many unique advantages over terrestrial cellular communications. First, satellite communications are not limited by the user region, for example, general land communications cannot cover areas where communication devices cannot be installed, such as oceans, mountains, deserts, etc., or communication coverage is not performed due to rarity of population, while for satellite communications, since one satellite can cover a larger ground, and the satellite can orbit around the earth, theoretically every corner on the earth can be covered by satellite communications. And secondly, satellite communication has great social value. Satellite communication can be covered in remote mountain areas, poor and backward countries or regions with lower cost, so that people in the regions enjoy advanced voice communication and mobile internet technology, and the digital gap between developed regions is reduced, and the development of the regions is promoted. Again, the satellite communication distance is far, and the cost of communication is not obviously increased when the communication distance is increased; and finally, the satellite communication has high stability and is not limited by natural disasters.

Fig. 2 is a schematic architecture diagram of another communication system according to an embodiment of the present application.

As shown in FIG. 2, including a terminal device 1101 and a satellite 1102, wireless communication may be provided between terminal device 1101 and satellite 1102. The network formed between terminal device 1101 and satellite 1102 may also be referred to as NTN. In the architecture of the communication system shown in FIG. 2, satellite 1102 may have the functionality of a base station and direct communication may be provided between terminal device 1101 and satellite 1102. Under the system architecture, satellite 1102 may be referred to as a network device. In some embodiments of the present application, a plurality of network devices 1102 may be included in a communication system, and other numbers of terminal devices may be included within the coverage area of each network device 1102, which embodiments of the present application are not limited in this regard.

Fig. 3 is a schematic architecture diagram of another communication system according to an embodiment of the present application.

As shown in fig. 3, the system comprises a terminal device 1201, a satellite 1202 and a base station 1203, wherein wireless communication can be performed between the terminal device 1201 and the satellite 1202, and communication can be performed between the satellite 1202 and the base station 1203. The network formed between the terminal device 1201, the satellite 1202 and the base station 1203 may also be referred to as NTN. In the architecture of the communication system shown in fig. 3, the satellite 1202 may not have the function of a base station, and communication between the terminal device 1201 and the base station 1203 needs to be relayed through the satellite 1202. Under such a system architecture, the base station 1203 may be referred to as a network device. In some embodiments of the present application, a plurality of network devices 1203 may be included in the communication system, and a coverage area of each network device 1203 may include other number of terminal devices, which is not limited in the embodiments of the present application. The network device 1203 may be the network device 120 of fig. 1.

It should be appreciated that the

satellites

1102 or 1202 include, but are not limited to:

low Earth Orbit (Low-Earth Orbit) LEO satellites, medium Earth Orbit (MEO) satellites, geosynchronous Orbit (Geostationary Earth Orbit, GEO) satellites, high elliptical Orbit (High Elliptical Orbit, HEO) satellites, and the like. Satellites may cover the ground with multiple beams, e.g., a satellite may form tens or even hundreds of beams to cover the ground. In other words, one satellite beam may cover a ground area of several tens to hundreds of kilometers in diameter to ensure satellite coverage and to increase the system capacity of the overall satellite communication system.

As an example, the LEO may have a height ranging from 500km to 1500km, a corresponding orbital period of about 1.5 hours to 2 hours, a signal propagation delay for single hop communication between users may generally be less than 20ms, a maximum satellite visibility time may be 20 minutes, a signal propagation distance of the LEO is short and a link loss is small, and a transmission power requirement of a user terminal is not high. The orbit height of GEO may be 35786km, the period of rotation around the earth may be 24 hours, and the signal propagation delay for single hop communication between users may typically be 250ms.

In general, in order to ensure coverage of a satellite and improve system capacity of an entire satellite communication system, the satellite adopts multiple beams to cover the ground, and one satellite can form tens or hundreds of beams to cover the ground; a satellite beam may cover a ground area of several tens to hundreds of kilometers in diameter.

It should be noted that fig. 1 to 3 illustrate, by way of example, a system to which the present application is applicable, and of course, the method shown in the embodiments of the present application may be applicable to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship. It should also be understood that, in the embodiments of the present application, the "indication" may be a direct indication, an indirect indication, or an indication that there is an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

Satellites can be categorized into transmission-through forwarding (transparent payload) and regenerative forwarding (regenerative payload) from the functions they provide. For the transparent transmission forwarding satellite, only the functions of wireless frequency filtering, frequency conversion and amplification are provided, only the transparent forwarding of signals is provided, and the waveform signals forwarded by the transparent transmission forwarding satellite are not changed. For regenerative repeater satellites, in addition to providing functions of radio frequency filtering, frequency conversion and amplification, demodulation/decoding, routing/conversion, encoding/modulation functions may be provided, which have some or all of the functions of the base station.

In NTN, one or more gateways (Gateway) may be included for communication between satellites and terminals.

As shown in fig. 4, for the NTN scenario based on the transparent forwarding satellite, the gateway and the satellite communicate through a Feeder link (Feeder link), and the satellite and the terminal communicate through a service link (service link). As shown in fig. 5, for the NTN scenario based on regenerative forwarding satellites, communication is performed between satellites through inter-satellite (inter link), communication is performed between a gateway and satellites through Feeder links (Feeder links), and communication is performed between satellites and terminals through service links (service links).

With the pursuit of speed, delay, high-speed mobility, energy efficiency and the diversity and complexity of future life services, the 3GPP international standards organization starts to develop 5G. The main application scenarios of 5G include: enhanced mobile Ultra-wideband (Enhance Mobile Broadband, emmbb), low latency high reliability communications (Ultra-Reliable and Low Latency Communication, URLLC), large scale machine type communications (massive machine type of communication, mctc). Among them, the ebb aims at users getting multimedia contents, services and data, and its demand is growing very rapidly. Since the eMBB may be deployed in a different scenario. For example, indoors, urban areas, rural areas, etc., the capability and demand of which are also quite different, so that detailed analysis can be combined with specific deployment scenarios cannot be generalized. Typical applications of URLLC include: industrial automation, electric power automation, remote medical operation (surgery), traffic safety guarantee and the like. Typical characteristics of mctc include: high connection density, small data volume, delay insensitive traffic, low cost and long service life of the module, etc.

NR can be deployed independently, and a new radio resource control (Radio Resource Control, RRC) state, namely RRC_INACTIVE (deactivated) state, is defined in the 5G network environment for the purposes of reducing air interface signaling and quickly recovering radio connection and quickly recovering data service. This state is different from the rrc_idle and rrc_connected states.

In the rrc_idle state: mobility is UE-based cell selection reselection, paging is initiated by a Core Network (CN), and paging areas are configured by the CN. The base station side does not have a UE Access Stratum (AS) context, and does not have RRC connection.

In the rrc_connected state: there is an RRC connection and the base station and UE have a UE AS context. The network device knows that the location of the UE is cell specific. Mobility is mobility controlled by the network device. Unicast data may be transmitted between the UE and the base station.

Rrc_inactive: mobility is a UE-based cell selection reselection, there is a connection between CN-NRs, the UE AS context is present on a certain base station, paging is triggered by the radio access network (Radio Access Network, RAN), the RAN-based paging area is managed by the RAN, the network device knows that the UE location is based on the RAN paging area level.

In order to facilitate the understanding of the present application, the following describes the schemes of cell selection and cell reselection for terminal devices in an NR system.

1. Cell selection procedure.

The cell needs to satisfy the S criterion, and if and only if the received power and signal quality of the current cell satisfy the following conditions simultaneously, the terminal device performs cell selection: srxlev >0 and square >0; specifically, the terminal device may determine Srxlev and square according to the following formula:

Srxlev＝Q _rxlevmeas –(Q _rxlevmin +Q _{rxlevminoffset} )–P _compensation -Qoffset _temp ；

Squal＝Q _qualmeas –(Q _qualmin +Q _{qualminoffset} )-Qoffset _temp 。

wherein Q is _rxlevmeas And Q _qualmeas Cell received power measured for UE, i.e. reference signal received power (Reference Signal Receiving Power, RSRP) and reference signal received quality (Reference Signal Receiving Quality, RSRQ);

Q _rxlevmin and Q _qualmin Minimum received power required for the network side, namely minimum RSRP and minimum RSRQ;

Q _{rxlevminoffset} and Q _{qualminoffset} To prevent offset of ping-pong effect between two public land mobile networks (Public Land Mobile Network, PLMN) due to radio environment fluctuations. It should be noted that the offset is only considered when camping on a suitable cell of the visited PLMN and periodically searching for a higher priority PLMN.

P _compensation For power compensation, for example, when the maximum allowed transmit power at the network side is greater than the maximum uplink transmit power determined by the UE's own capability, the power compensation is caused by low UE power.

Qoffset _temp For special scenes only, the normal situation is not applicable, for example a "kiloleaf problem" scene.

2. Cell reselection procedure.

Cell reselection (cell reselection) refers to a process in which a UE provides a service signal by monitoring signal quality of neighbor cells and a current cell in an idle mode to select one of the best cells. When the signal quality and level of the neighbor cell meet the S criterion and meet a certain reselection decision criterion (R criterion), the terminal will access the cell to camp on. After the UE successfully camps, the measurement of the cell is continuously performed. Specifically, the terminal device calculates an S criterion (Srxlev) according to the RSRP measurement result through the RRC layer, and compares the S criterion (Srxlev) with a common frequency measurement start threshold (Sintrasearch) and a different frequency/different system measurement start threshold (snondintersearch) as a decision condition for whether to start neighbor cell measurement. For the same frequency (Intra-frequency) and different frequency (inter-frequency), the network device assists the UE to measure by configuring the synchronization signal of each frequency (per frequency) and/or the measurement timing configuration (SS/PBCH Block measurement timing configuration, SMTC) of the physical broadcast channel Block (Synchronization Signal/PBCH Block, SSB), so as to achieve the UE power saving purpose.

For the acquisition procedure of cell signal quality, the terminal device may acquire a per frequency (per frequency) parameter N and a threshold for selecting the best beam (beam) through system broadcasting. Thus, the terminal device can linearly average the signal quality of the top N beams meeting the threshold as the cell signal quality. If the per frequency (per frequency) parameter N and the threshold are not broadcast, the signal quality of the best beam in the cell is taken as the cell signal quality.

For the procedure of target cell selection, the terminal device may select, as the target cell, the cell with the most beam satisfying the threshold by controlling the candidate cells to the best cell range (rangeToBestCell), that is, all candidate cells whose difference in signal quality from the best cell is within the best cell range (rangeToBestCell). Specifically, R is calculated according to the following formula _n And R is _s If R is continuously measured _n And R is _s Can be used forMaintain R for the detection time _n >R _s Cell reselection is required.

R _s ＝Q _meas,s +Q _hyst -Qoffset _temp ；

R _n ＝Q _meas,n -Qoffset–Qoffset _temp 。

Wherein R is _s Representing the signal quality of the serving cell;

R _n representing signal quality of the neighbor cell;

Q _meas -representing RSRP measurements (RSRP measurement quantity used in cell reselections) used in cell reselection;

Q _meas,s representing serving cell RSRP measurements;

Q _meas,n representing neighbor cell RSRP measurements;

Q _hysts hysteresis for cell reselection;

for the same frequency: if Qoffset _s,n Is valid, qoffset is equal to Qoffset _s,n Otherwise equal to 0 (For intra-frequency: equals to Qoffset _s,n ,if Qoffset _s,n is valid,otherwise this equals to zero)；

For different frequencies: if Qoffset _s,n Is effective and equal to Qoffset _s,n Qoffset is added _frequency Otherwise equal to Qoffset _frequency (For inter-frequency:Equals to Qoffset _s,n plus Qoffset _frequency ,if Qoffset _s,n is valid,otherwise this equals to Qoffset _frequency .)。

Qoffset _s,n The difference in signal quality requirements is received for two cells (i.e., the serving cell and the neighbor cell).

Qoffset _temp A temporary offset value (Offset temporarily applied to a cell) representing the cell.

After introduction of NTN, the connection of the satellite and the terrestrial gateway is also handed off when the satellite moves at high speed. Specifically, if two terrestrial gateways are connected to two terrestrial base stations or two cells under one terrestrial base station, then all User Equipment (UE) in the area covered by the satellite need to be handed over from the original cell to a new cell after a feedback link handover (feeder link switch). However, since the distance between the satellite and the ground in the NNT is large, the signal transmission delay between the terminal device and the satellite is also large, and at this time, if the signal quality is obtained by means of radio resource management (Radio Resource Management, RRM) measurement, the required waiting time is too long, which may possibly cause service interruption and reduce the communication quality. Of course, if two terrestrial gateways are connected to the same cell under the same base station, the UE may not perform a handover operation.

As shown in fig. 6, a ground gateway 1 is connected to a base station 1, and a ground gateway 2 is connected to the base station 2. At time T1, the satellite coverage area is a cell under the base station 1, and at time T2, the satellite coverage area is a cell under the base station 2, and at this time, feeder link switching (feeder link switch), that is, cell switching, needs to be performed, so that the terminal device can be switched from the original cell to a new cell. For example, a handover may be performed from an original cell to a new cell by a handover threshold (Transition threshold). The handover threshold may be a threshold associated with cell selection or cell reselection.

In the embodiment of the present application, the first adjustment amount is provided to assist the terminal device in cell selection or cell reselection, because the ground coverage of the satellite cell is fixed (quasi-earth-fixed) within a period of time, based on this, the signal quality of the new cell of the terminal device can be quickly obtained by using an adjustment amount of the period of time, and then cell selection and/or cell reselection is performed based on the signal quality of the new cell of the terminal device, which can avoid cell selection and/or cell reselection based on RRM measurement after reaching the cell, and is beneficial to the terminal device to quickly access the new cell, thereby being capable of reducing service interruption and improving communication quality.

Fig. 7 shows a schematic flow chart of a wireless communication method 200 according to an embodiment of the present application, which method 200 may be performed by a terminal device. For example, a terminal device as shown in fig. 1.

As shown in fig. 7, the method 200 may include some or all of the following:

s210, selecting and/or reselecting a cell based on the first adjustment quantity;

For NTN, the terminal device performs cell selection and/or cell reselection based on the first adjustment amount. For example, the terminal device determines the signal quality of the new cell of the terminal device based on the first adjustment amount, and further performs cell selection and/or cell reselection based on the signal quality of the new cell of the terminal device.

It should be noted that, in the embodiment of the present application, the signal quality of the new cell of the terminal device when the new cell arrives may be understood as: the signal quality of the terminal device in the new cell when the new cell arrives, and the signal quality of the serving cell of the terminal device when the serving cell leaves or when the new cell arrives can be understood as: signal quality of the terminal device in the serving cell when the serving cell leaves or when the new cell arrives. It should be further noted that, in the embodiment of the present application, specific implementation manners of the signal quality of the new cell and the signal quality of the serving cell are not limited. For example, RSRP, RSRQ, or SINR may be used. Of course, in other alternative embodiments of the present application, the first adjustment amount may also be used to characterize the adjustment amount of the signal quality of the new cell of the terminal device when the new cell arrives compared to the signal quality of the serving cell of the terminal device when the serving cell is about to leave. Alternatively, the impending departure of the serving cell may be understood as the new cell having arrived and the serving cell is impending departure. For example, as a typical case, the moment when the serving cell is about to leave may be the moment when a new cell arrives.

In some embodiments, the first adjustment amount is used to characterize an adjustment amount of a new cell signal quality of the terminal device when the new cell arrives compared to a serving cell signal quality of the terminal device when the serving cell leaves; based on the first service cell signal quality of the terminal equipment when the service cell leaves is obtained; determining the sum of the signal quality of the first service cell, the first adjustment amount and the path loss difference as the signal quality of a new cell of the terminal equipment when the new cell arrives; the path loss difference is the difference of the path loss of the service link of the terminal equipment when the new cell arrives compared with the path loss of the service link of the terminal equipment when the service cell leaves; and selecting and/or reselecting the cell based on the signal quality of the new cell of the terminal equipment when the new cell arrives.

In other words, assuming that the moment of departure of the serving cell is the moment T1, the moment of arrival of the new cell is the moment T2, and in this embodiment of the present application, the first adjustment amount is the signal quality of the new cell of the terminal device at the moment T2 relative to the signal quality of the serving cell of the terminal device at the moment T1.

In one implementation, the time of arrival of the new cell is located after the time of departure of the serving cell.

In other words, assuming that the time when the serving cell leaves is T1 time and the time when the new cell arrives is T2 time, T1 < T2. Or, the terminal equipment disconnects the old cell and then establishes connection with the new cell.

In one implementation, the method 200 may further include:

the path loss difference is determined based on at least one of:

the location information of the terminal device, ephemeris information, time information of arrival of the new cell, and time information of departure of the serving cell.

For example, the terminal device determines the path loss difference according to the location information, the ephemeris information, the arrival time information of the new cell and the departure time information of the serving cell of the terminal device. Specifically, the terminal device may determine, based on the time information of arrival of the new cell, a path loss of a service link of the terminal device when the new cell arrives, based on the location information and ephemeris information of the terminal device at the time of arrival of the new cell; similarly, the terminal device may determine, based on the time information of the departure of the serving cell, a path loss of a service link of the terminal device when the terminal device leaves the serving cell, based on the location information and ephemeris information of the terminal device at a time of the departure of the serving cell; further, the terminal device may determine the path loss difference based on a path loss of a service link of the terminal device when the new cell arrives and a path loss of a service link of the terminal device when the service cell leaves. For example, the terminal device may determine the difference between the path loss of the service link of the terminal device when the new cell arrives and the path loss of the service link of the terminal device when the service cell leaves.

In one implementation, the method 200 may further include:

and starting neighbor cell measurement when the service cell leaves.

In other words, the terminal device may perform cell selection and/or cell reselection based on the first adjustment amount when the new cell arrives, and the terminal device may also initiate neighbor cell measurement when the serving cell leaves, and perform selection and/or cell reselection based on a measurement result. These two schemes may be used in combination or alone, and are not particularly limited in this application.

In some embodiments, the first adjustment amount is used to characterize an adjustment amount of a new cell signal quality of the terminal device at the time of arrival of the new cell compared to a serving cell signal quality of the terminal device at the time of arrival of the new cell; based on the information, acquiring the signal quality of a second service cell of the terminal equipment when the new cell arrives; determining the sum of the signal quality of the second serving cell and the first adjustment amount as the signal quality of the new cell of the terminal equipment when the new cell arrives; and selecting and/or reselecting the cell based on the signal quality of the new cell of the terminal equipment when the new cell arrives.

In other words, assuming that the moment of departure of the serving cell is the moment T1, the moment of arrival of the new cell is the moment T2, and in this embodiment of the present application, the first adjustment amount is the signal quality of the new cell of the terminal device at the moment T2 relative to the signal quality of the serving cell of the terminal device at the moment T2.

In one implementation, the time of arrival of the new cell is before the time of departure of the serving cell.

In other words, assuming that the time when the serving cell leaves is T1 time and the time when the new cell arrives is T2 time, T1 > T2. Or, the terminal equipment establishes connection with the new cell and disconnects with the old cell.

In one implementation, the serving cell is excluded in a cell selection and/or cell reselection ranking operation based on a new cell signal quality of the terminal device when the new cell arrives.

Since T1 > T2 corresponds to the terminal device disconnecting from the old cell after establishing a connection with the new cell, the serving cell to be left is usually considered also in the cell selection or cell reselection reordering process. In the embodiment of the application, in cell selection or cell reselection, the new cell can be accessed earlier through signal quality sequencing by excluding the service cell to be separated, so that the service interruption of the terminal equipment on the old service cell is avoided.

In some embodiments, the method 200 may further comprise:

and receiving configuration information of the service cell, wherein the configuration information comprises the first adjustment quantity.

In one implementation, the configuration information further includes time information of departure of the serving cell and/or time information of arrival of the new cell. For example, the time information of the departure of the serving cell may be a time or a period of time of the departure of the serving cell. The time information of arrival of the new cell may be a time or a time period of arrival of the new cell.

In one implementation, the configuration information of the serving cell is obtained through a system message or radio resource control (Radio Resource Control, RRC) dedicated signaling. For example, the configuration information is carried or piggybacked in the system message or RRV dedicated signaling.

In one implementation, the configuration information is applicable to the scenario in which the feeder link is switched (feeder link switch).

In other words, in case of a handover of the feeder link, cell selection and/or cell reselection is performed based on the first adjustment amount.

In one implementation, the new cell includes a plurality of cells, and arrival times of some or all of the plurality of cells are the same or arrival times of the plurality of cells are different from each other.

In other words, the first adjustment amount may include a plurality of adjustment amounts, which are in one-to-one correspondence with the plurality of cells; or, the cells with different arrival times in the cells correspond to different adjustment amounts. Based on this, the terminal device may perform cell selection and/or cell reselection based on the cell signal quality at which each cell is reached.

In one implementation, the first adjustment amount includes at least one of: the difference of the path loss of the feeder link when the new cell arrives and the path loss of the feeder link when the new cell leaves, the difference of the synchronous signal and/or physical broadcast channel block SSB transmitting power when the new cell arrives and the SSB transmitting power when the new cell leaves, or the difference of the satellite power amplification factor when the new cell arrives and the satellite power amplification factor when the new cell leaves. For example, the first adjustment amount includes a sum of the following differences: the difference of the path loss of the feeder link when the new cell arrives and the path loss of the feeder link when the new cell leaves, the difference of the synchronous signal and/or physical broadcast channel block SSB transmitting power when the new cell arrives and the SSB transmitting power when the new cell leaves, or the difference of the satellite power amplification factor when the new cell arrives and the satellite power amplification factor when the new cell leaves.

In other words, assuming that the moment of departure of the serving cell is the T1 moment, and the moment of arrival of the new cell is the T2 moment, in this embodiment of the present application, for the T1 moment, the signal quality of the terminal device may be calculated by the following formula: p (P) _T1 ＝P _SSB,1 -P _service,1 -P _feeder,1 +P _Satellite,1 The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is _SSB,1 Representing SSB transmit power, P, of a base station at time T1 _feeder,1 Representing the path loss of the feeder link at the moment T1, P _Satellite,1 The satellite power amplification factor at the moment T1 is represented; p (P) _service,1 The path loss of the service link at time T1 is shown. For time T2, the signal quality of the terminal device can be calculated by the following formula: p (P) _T2 ＝P _SSB,2 -P _service,2 -P _feeder,2 +P _Satellite,2 The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is _SSB,2 Representing SSB transmit power, P, of a base station at time T2 _feeder,2 Representing the path loss of the feeder link at the time T2, P _Satellite,2 The satellite power amplification factor at the moment T2 is represented; p (P) _service,2 Indicating the path loss of the service link at time T2. Based on this, it is possible to obtain:

P _T2 -P _T1 ＝(P _SSB,2 -P _SSB,1 )-(P _service,2 -P _service,1 )-(P _feeder,2 -P _feeder,1 )+(P _Satellite,2 -P _Satellite,1 )；

in an embodiment of the present application, the first adjustment amount may include (P _SSB,2 -P _SSB,1 )、(P _feeder,2 -P _feeder,1 ) (P) _Satellite,2 -P _Satellite,1 )。

As shown in fig. 8, gateway 1 is connected to base station 1, and gateway 2 is connected to base station 2. The time when the serving cell leaves is assumed to be T1, and the time when the new cell arrives is T2, assuming that the satellite moves in the satellite movement direction (Satellite moving direction) as shown. In other words, at time T1, the satellite coverage area is the cell under the base station 1, and at time T2, the satellite coverage area is the cell under the base station 2, and at this time, feeder link handover (feeder link switch), that is, cell handover, needs to be performed, so that the terminal device can be handed over from the original cell to the new cell.

The following takes the scenario shown in fig. 8 as an example, and the solution of the present application is described by way of example with reference to specific embodiments.

Example 1:

in the embodiment of the present application, when the network broadcasts the time information of arrival of the new cell, the signal quality of the new cell additionally broadcasted to the terminal device when the new cell arrives is compared with the adjustment amount of the signal quality of the serving cell of the terminal device when the serving cell starts, and cell selection and/or cell reselection are performed through the adjustment amount (T1 < T2).

The terminal equipment receives configuration information of a service cell, wherein the configuration information also comprises time information T1 of departure of the service cell and/or time information T2 of arrival of the new cell. Further comprises an adjustment of the signal quality of the new cell of the terminal device when the new cell arrives compared to the signal quality of the serving cell of the terminal device when the serving cell starts. Specific:

a) Configuration information can be obtained through system information or RRC dedicated signaling;

b) Configuration information for feeder link switching (feeder link switch) scenarios;

c) The new cell may have a plurality of cells, and T2 of the plurality of cells may be the same or different;

d) The adjustment amount may include a difference in feeder link loss of the new cell and the old cell, a difference in SSB transmission power of the new cell and the old cell, a difference in satellite power amplification of the new cell and the old cell, and the like.

The method comprises the steps that a serving cell leaves at the time of T1, the terminal equipment adds the signal quality (such as RSRP/RSRQ/SINR) of the serving cell at the time of T1 and the adjustment quantity of the signal quality of the serving cell of the terminal equipment when the new cell configured by a network arrives as compared with the signal quality of the serving cell of the terminal equipment at the beginning of the serving cell, and adds the path loss difference (calculated by the position and ephemeris information of the terminal equipment) of a serving link at the time of T2 as the signal quality of the new cell of the terminal equipment at the time of T2, and the signal quality of the new cell of the terminal equipment is used for carrying out cell selection or sorting operation in a cell reselection process at the time of T2. In addition, at time T1, i.e. when the serving cell leaves, the terminal device may also start neighbor cell measurement on the same/different frequency.

In the embodiment of the application, after the configuration of the adjustment quantity is introduced, the terminal equipment at the time T2 can acquire the signal quality of the new cell as soon as possible, so that the situation that the signal quality of the new cell of the terminal equipment can be acquired only after the new cell starts to be measured at the time T2 is avoided, the acquisition time of the signal quality of the new cell of the terminal equipment is shortened, the terminal equipment can be accessed into the cell faster, the service interruption time is shortened, and the communication quality is improved.

Example 2:

the network broadcasts the time information of the new cell arrival, and simultaneously, the signal quality of the new cell which is additionally broadcasted to the terminal equipment when the new cell arrives is compared with the adjustment quantity of the signal quality of the service cell of the terminal equipment when the new cell arrives, the terminal equipment performs cell selection and/or cell reselection through the adjustment quantity when the new cell arrives, and excludes the service cell (T1 > T2) which is about to leave when the new cell arrives.

When a new cell arrives at a time T2, the terminal equipment uses the signal quality (for example, RSRP/RSRQ/SINR) of a serving cell at the time T2 plus the adjustment quantity of the signal quality of the serving cell of the terminal equipment when the new cell arrives as compared with the signal quality of the serving cell of the terminal equipment when the new cell arrives as the new cell, and uses the signal quality of the new cell of the terminal equipment at the time T2 to perform cell selection or sorting operation in the process of cell reselection. In the cell reselection ranking, the terminal device excludes the serving cell that is about to leave.

In the embodiment of the application, the signal quality of the new cell at the moment T2 is obtained through the introduced adjustment quantity, so that the reselection to the new cell can be quickened; in addition, by excluding the service cell to be separated, the terminal device can be accessed to the new cell earlier through signal quality sequencing, so as to avoid the service interruption of the terminal device on the old service cell.

In summary, the present application provides a method for cell selection and/or cell reselection in NTN scenario, mainly for feeder link handover scenario. In some embodiments, the network broadcasts the time information of the new cell arrival, and the signal quality of the new cell additionally broadcast to the terminal device at the time of the new cell arrival is compared with the adjustment amount of the signal quality of the serving cell of the terminal device at the beginning of the serving cell, and cell selection and/or cell reselection are performed through the adjustment amount (T1 < T2). In other embodiments, the network broadcasts the time information of the new cell arrival, and additionally broadcasts an adjustment amount of the signal quality of the new cell to the terminal device when the new cell arrives compared with the signal quality of the serving cell of the terminal device when the new cell arrives, the terminal device performs cell selection and/or cell reselection through the adjustment amount when the new cell arrives, and excludes the serving cell (T1 > T2) which is about to leave when the new cell arrives. In the embodiment of the application, after the configuration of the adjustment quantity is introduced, the terminal equipment at the time T2 can acquire the signal quality of the new cell as soon as possible, so that the situation that the signal quality of the new cell of the terminal equipment can be acquired only after the new cell starts to be measured at the time T2 is avoided, the acquisition time of the signal quality of the new cell of the terminal equipment is shortened, the terminal equipment can be accessed into the cell faster, the service interruption time is shortened, and the communication quality is improved.

The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present application within the scope of the technical concept of the present application, and all the simple modifications belong to the protection scope of the present application. For example, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described in detail. As another example, any combination of the various embodiments of the present application may be made without departing from the spirit of the present application, which should also be considered as disclosed herein.

It should be further understood that, in the various method embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic of the processes, and should not constitute any limitation on the implementation process of the embodiments of the present application. In addition, in the embodiment of the present application, the term "and/or" is merely an association relationship describing the association object, which means that three relationships may exist. Specifically, a and/or B may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The wireless communication method according to the embodiment of the present application is described in detail from the perspective of the terminal device in conjunction with fig. 7 and 8 above, and the wireless communication method according to the embodiment of the present application will be described from the perspective of the network device in conjunction with fig. 9 below.

Fig. 9 is a schematic flow chart of a wireless communication method 300 provided in an embodiment of the present application. The method 300 may be performed by a network device, such as the network device shown in fig. 1.

As shown in fig. 9, the method 300 may include:

s310, sending configuration information of a service cell;

In some embodiments, the configuration information further comprises time information of departure of the serving cell and/or time information of arrival of the new cell.

In some embodiments, the configuration information of the serving cell is obtained through system message broadcast or RRC dedicated signaling.

In some embodiments, the configuration information is applicable to scenarios in which a feeder link is switched.

In some embodiments, the new cell includes a plurality of cells, and arrival times of some or all of the plurality of cells are the same or arrival times of the plurality of cells are different from each other.

In some embodiments, the first adjustment amount includes at least one of: the difference of the path loss of the feeder link when the new cell arrives and the path loss of the feeder link when the new cell leaves, the difference of the synchronous signal and/or physical broadcast channel block SSB transmitting power when the new cell arrives and the SSB transmitting power when the new cell leaves, or the difference of the satellite power amplification factor when the new cell arrives and the satellite power amplification factor when the new cell leaves.

It should be understood that the steps in the method 300 may refer to corresponding steps in the method 200, and are not described herein for brevity.

Method embodiments of the present application are described above in detail, and apparatus embodiments of the present application are described below in detail in conjunction with fig. 10-13.

Fig. 10 is a schematic block diagram of a terminal device 400 of an embodiment of the present application.

As shown in fig. 10, the terminal device 400 may include:

a processing unit 410, configured to perform cell selection and/or cell reselection based on the first adjustment amount;

In some embodiments, the first adjustment amount is used to characterize an adjustment amount of a new cell signal quality of the terminal device when the new cell arrives compared to a serving cell signal quality of the terminal device when the serving cell leaves; wherein, the processing unit 410 is specifically configured to:

acquiring the signal quality of a first serving cell of the terminal equipment when the serving cell leaves;

determining the sum of the signal quality of the first service cell, the first adjustment amount and the path loss difference as the signal quality of a new cell of the terminal equipment when the new cell arrives; the path loss difference is the difference of the path loss of the service link of the terminal equipment when the new cell arrives compared with the path loss of the service link of the terminal equipment when the service cell leaves;

and selecting and/or reselecting the cell based on the signal quality of the new cell of the terminal equipment when the new cell arrives.

In some embodiments, the time of arrival of the new cell is located after the time of departure of the serving cell.

In some embodiments, the processing unit 410 is further configured to:

the path loss difference is determined based on at least one of:

In some embodiments, the processing unit 410 is further configured to:

and starting neighbor cell measurement when the service cell leaves.

In some embodiments, the first adjustment amount is used to characterize an adjustment amount of a new cell signal quality of the terminal device at the time of arrival of the new cell compared to a serving cell signal quality of the terminal device at the time of arrival of the new cell; wherein, the processing unit 410 is specifically configured to:

acquiring the signal quality of a second service cell of the terminal equipment when the new cell arrives;

determining the sum of the signal quality of the second serving cell and the first adjustment amount as the signal quality of the new cell of the terminal equipment when the new cell arrives;

In some embodiments, the time of arrival of the new cell is before the time of departure of the serving cell.

In some embodiments, the processing unit 410 is specifically configured to:

and excluding the service cell in a cell selection and/or cell reselection ranking operation based on the new cell signal quality of the terminal device when the new cell arrives.

In some embodiments, the terminal device further comprises:

and the communication unit is used for receiving the configuration information of the service cell, wherein the configuration information comprises the first adjustment quantity.

In some embodiments, the communication unit is specifically configured to:

and acquiring the configuration information of the service cell through a system message or a Radio Resource Control (RRC) dedicated signaling.

In some embodiments, the first adjustment amount includes at least one of:

The difference of the path loss of the feeder link when the new cell arrives and the path loss of the feeder link when the new cell leaves, the difference of the synchronous signal and/or physical broadcast channel block SSB transmitting power when the new cell arrives and the SSB transmitting power when the new cell leaves, or the difference of the satellite power amplification factor when the new cell arrives and the satellite power amplification factor when the new cell leaves.

Fig. 11 is a schematic block diagram of a network device 500 of an embodiment of the present application.

As shown in fig. 11, the network device 500 may include:

a communication unit 510, configured to send configuration information of a serving cell;

In some embodiments, the communication unit 510 is specifically configured to:

and acquiring the configuration information of the service cell through system message broadcasting or RRC dedicated signaling.

In some embodiments, the first adjustment amount includes at least one of:

It should be understood that apparatus embodiments and method embodiments may correspond with each other and that similar descriptions may refer to the method embodiments. Specifically, the terminal device 400 shown in fig. 10 may correspond to a corresponding main body in performing the method 200 of the embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 400 are respectively for implementing the corresponding flow in each method in fig. 7, which is not described herein for brevity. Similarly, the network device 500 shown in fig. 11 may correspond to a corresponding main body in performing the method 300 of the embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the network device 500 are respectively for implementing the corresponding flow in each method in fig. 9, and are not described herein for brevity.

The communication device of the embodiments of the present application is described above from the perspective of the functional module in conjunction with the accompanying drawings. It should be understood that the functional module may be implemented in hardware, or may be implemented by instructions in software, or may be implemented by a combination of hardware and software modules. Specifically, each step of the method embodiments in the embodiments of the present application may be implemented by an integrated logic circuit of hardware in a processor and/or an instruction in software form, and the steps of the method disclosed in connection with the embodiments of the present application may be directly implemented as a hardware decoding processor or implemented by a combination of hardware and software modules in the decoding processor. Alternatively, the software modules may be located in a well-established storage medium in the art such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, and the like. The storage medium is located in a memory, and the processor reads information in the memory, and in combination with hardware, performs the steps in the above method embodiments.

For example, the processing unit 410 and the communication unit 510 referred to above may be implemented by a processor and a transceiver, respectively.

Fig. 12 is a schematic structural diagram of a communication apparatus 600 of an embodiment of the present application.

As shown in fig. 12, the communication device 600 may include a processor 610.

Wherein the processor 610 may call and run a computer program from a memory to implement the methods in embodiments of the present application.

As shown in fig. 12, the communication device 600 may also include a memory 620.

The memory 620 may be used to store instruction information, and may also be used to store code, instructions, etc. for execution by the processor 610. Wherein the processor 610 may call and run a computer program from the memory 620 to implement the methods in embodiments of the present application. The memory 620 may be a separate device from the processor 610 or may be integrated into the processor 610.

As shown in fig. 12, the communication device 600 may also include a transceiver 630.

The processor 610 may control the transceiver 630 to communicate with other devices, and in particular, may send information or data to other devices or receive information or data sent by other devices. Transceiver 630 may include a transmitter and a receiver. Transceiver 630 may further include antennas, the number of which may be one or more.

It should be appreciated that the various components in the communication device 600 are connected by a bus system that includes a power bus, a control bus, and a status signal bus in addition to a data bus.

It should also be understood that the communication device 600 may be a terminal device of the embodiment of the present application, and the communication device 600 may implement respective flows implemented by the terminal device in the respective methods of the embodiment of the present application, that is, the communication device 600 of the embodiment of the present application may correspond to the terminal device 400 of the embodiment of the present application, and may correspond to respective main bodies in performing the method 200 according to the embodiment of the present application, which are not described herein for brevity. Similarly, the communication device 600 may be a network device according to an embodiment of the present application, and the communication device 600 may implement a corresponding flow implemented by the network device in the respective methods according to the embodiments of the present application. That is, the communication device 600 of the embodiment of the present application may correspond to the network device 500 of the embodiment of the present application, and may correspond to a corresponding body in performing the method 300 according to the embodiment of the present application, which is not described herein for brevity.

In addition, the embodiment of the application also provides a chip.

For example, the chip may be an integrated circuit chip having signal processing capabilities, and may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present application. The chip may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc. Alternatively, the chip may be applied to various communication devices, so that the communication device mounted with the chip can perform the methods, steps and logic blocks disclosed in the embodiments of the present application.

Fig. 13 is a schematic structural diagram of a chip 700 according to an embodiment of the present application.

As shown in fig. 13, the chip 700 includes a processor 710.

The processor 710 may call and execute a computer program from a memory to implement the methods of the embodiments of the present application.

As shown in fig. 13, the chip 700 may further include a memory 720.

Wherein the processor 710 may call and run a computer program from the memory 720 to implement the methods in embodiments of the present application. The memory 720 may be used for storing instruction information, and may also be used for storing code, instructions, etc. for execution by the processor 710. Memory 720 may be a separate device from processor 710 or may be integrated into processor 710.

As shown in fig. 13, the chip 700 may further include an input interface 730.

The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

As shown in fig. 13, the chip 700 may further include an output interface 740.

The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

It should be understood that the chip 700 may be applied to a network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, or may implement a corresponding flow implemented by a terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

It should also be appreciated that the various components in the chip 700 are connected by a bus system that includes a power bus, a control bus, and a status signal bus in addition to a data bus.

The processors referred to above may include, but are not limited to:

a general purpose processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like.

The processor may be configured to implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory or erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

The above references to memory include, but are not limited to:

volatile memory and/or nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and Direct memory bus RAM (DR RAM).

It should be noted that the memory described herein is intended to comprise these and any other suitable types of memory.

There is also provided in an embodiment of the present application a computer-readable storage medium for storing a computer program. The computer readable storage medium stores one or more programs, the one or more programs comprising instructions, which when executed by a portable electronic device comprising a plurality of application programs, enable the portable electronic device to perform the method of the embodiments shown in method 200 or method 300. Optionally, the computer readable storage medium may be applied to a network device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity. Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, which is not described herein for brevity.

A computer program product, including a computer program, is also provided in an embodiment of the present application. Optionally, the computer program product may be applied to a network device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity. Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program causes a computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, which are not described herein for brevity.

A computer program is also provided in an embodiment of the present application. The computer program, when executed by a computer, enables the computer to perform the methods of the embodiments shown in method 200 or method 300. Optionally, the computer program may be applied to a network device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity. Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute corresponding processes implemented by the mobile terminal/terminal device in each method in the embodiments of the present application, which are not described herein for brevity.

The embodiment of the present application further provides a communication system, which may include the above-mentioned terminal device and network device, so as to form the communication system 100 shown in fig. 1, which is not described herein for brevity. It should be noted that the term "system" and the like herein may also be referred to as "network management architecture" or "network system" and the like.

It is also to be understood that the terminology used in the embodiments of the present application and the appended claims is for the purpose of describing particular embodiments only, and is not intended to be limiting of the embodiments of the present application. For example, as used in the examples and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

Those of skill in the art will appreciate that the elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application. If implemented as a software functional unit and sold or used as a stand-alone product, may be stored on a computer readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application may be essentially or, what contributes to the prior art, or part of the technical solution may be embodied in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk.

Those skilled in the art will further appreciate that, for convenience and brevity, specific working procedures of the above-described system, apparatus and unit may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein. In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the division of units or modules or components in the above-described apparatus embodiments is merely a logic function division, and there may be another division manner in actual implementation, for example, multiple units or modules or components may be combined or may be integrated into another system, or some units or modules or components may be omitted or not performed. As another example, the units/modules/components described above as separate/display components may or may not be physically separate, i.e., may be located in one place, or may be distributed over multiple network elements. Some or all of the units/modules/components may be selected according to actual needs to achieve the purposes of the embodiments of the present application. Finally, it is pointed out that the coupling or direct coupling or communication connection between the various elements shown or discussed above can be an indirect coupling or communication connection via interfaces, devices or elements, which can be in electrical, mechanical or other forms.

The foregoing is merely a specific implementation of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto, and any person skilled in the art may easily think about changes or substitutions within the technical scope of the embodiments of the present application, and all changes and substitutions are included in the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

A method of wireless communication, comprising:

cell selection and/or cell reselection based on the first adjustment amount;

wherein the first adjustment amount is used to characterize an adjustment amount of a signal quality of a new cell of the terminal device when the new cell arrives compared to a signal quality of a serving cell of the terminal device when the serving cell leaves or when the new cell arrives.
The method according to claim 1, characterized in that the first adjustment amount is used for characterizing an adjustment amount of a new cell signal quality of the terminal device when the new cell arrives compared to a serving cell signal quality of the terminal device when the serving cell leaves;

the cell selection and/or cell reselection based on the first adjustment amount includes:

Acquiring the signal quality of a first serving cell of the terminal equipment when the serving cell leaves;

determining the sum of the signal quality of the first service cell, the first adjustment amount and the path loss difference as the signal quality of a new cell of the terminal equipment when the new cell arrives; the path loss difference is the difference of the path loss of the service link of the terminal equipment when the new cell arrives compared with the path loss of the service link of the terminal equipment when the service cell leaves;

and selecting and/or reselecting the cell based on the signal quality of the new cell of the terminal equipment when the new cell arrives.
The method of claim 2, wherein the time of arrival of the new cell is after the time of departure of the serving cell.
A method according to claim 2 or 3, characterized in that the method further comprises:

the path loss difference is determined based on at least one of:

the location information of the terminal device, ephemeris information, time information of arrival of the new cell, and time information of departure of the serving cell.
The method according to any one of claims 2 to 4, further comprising:

And starting neighbor cell measurement when the service cell leaves.
The method according to claim 1, characterized in that the first adjustment amount is used for characterizing an adjustment amount of a new cell signal quality of the terminal device when the new cell arrives compared to a serving cell signal quality of the terminal device when the new cell arrives;

the cell selection and/or cell reselection based on the first adjustment amount includes:

acquiring the signal quality of a second service cell of the terminal equipment when the new cell arrives;

determining the sum of the signal quality of the second serving cell and the first adjustment amount as the signal quality of the new cell of the terminal equipment when the new cell arrives;

and selecting and/or reselecting the cell based on the signal quality of the new cell of the terminal equipment when the new cell arrives.
The method of claim 6, wherein the time of arrival of the new cell is before the time of departure of the serving cell.
Method according to claim 6 or 7, characterized in that said cell selection and/or cell reselection based on the new cell signal quality of the terminal device at the time of the new cell arrival comprises:

And excluding the service cell in a cell selection and/or cell reselection ranking operation based on the new cell signal quality of the terminal device when the new cell arrives.
The method according to any one of claims 1 to 8, further comprising:

and receiving configuration information of the service cell, wherein the configuration information comprises the first adjustment quantity.
The method according to claim 9, wherein the configuration information further comprises time information of departure of the serving cell and/or time information of arrival of the new cell.
The method according to claim 9 or 10, wherein said receiving configuration information of the serving cell comprises:

and acquiring the configuration information of the service cell through a system message or a Radio Resource Control (RRC) dedicated signaling.
The method according to any of claims 9 to 11, wherein the configuration information is applicable to a scenario in which a feeder link is switched.
The method according to any one of claims 9 to 12, wherein the new cell comprises a plurality of cells, and wherein the arrival times of some or all of the plurality of cells are the same or the arrival times of the plurality of cells are different from each other.
The method according to any one of claims 9 to 13, wherein the first adjustment amount comprises at least one of:

the difference of the path loss of the feeder link when the new cell arrives and the path loss of the feeder link when the new cell leaves, the difference of the synchronous signal and/or physical broadcast channel block SSB transmitting power when the new cell arrives and the SSB transmitting power when the new cell leaves, or the difference of the satellite power amplification factor when the new cell arrives and the satellite power amplification factor when the new cell leaves.
A method of wireless communication, comprising:

transmitting configuration information of a service cell;

the configuration information comprises a first adjustment quantity, wherein the first adjustment quantity is used for representing the adjustment quantity of the signal quality of a new cell of the terminal equipment when the new cell arrives compared with the signal quality of a service cell of the terminal equipment when the service cell leaves or when the new cell arrives.
The method according to claim 15, wherein the configuration information further comprises time information of departure of the serving cell and/or time information of arrival of the new cell.
The method according to claim 15 or 16, wherein said receiving configuration information of the serving cell comprises:

and acquiring the configuration information of the service cell through system message broadcasting or RRC dedicated signaling.
The method according to any of claims 15 to 17, wherein the configuration information is applicable to a scenario in which a feeder link is switched.
The method according to any one of claims 15 to 18, wherein the new cell comprises a plurality of cells, and wherein the arrival times of some or all of the plurality of cells are the same or the arrival times of the plurality of cells are different from each other.
The method according to any one of claims 15 to 19, wherein the first adjustment amount comprises at least one of:

the difference of the path loss of the feeder link when the new cell arrives and the path loss of the feeder link when the new cell leaves, the difference of the synchronous signal and/or physical broadcast channel block SSB transmitting power when the new cell arrives and the SSB transmitting power when the new cell leaves, or the difference of the satellite power amplification factor when the new cell arrives and the satellite power amplification factor when the new cell leaves.
A terminal device, comprising:

a processing unit, configured to perform cell selection and/or cell reselection based on the first adjustment amount;

wherein the first adjustment amount is used to characterize an adjustment amount of a signal quality of a new cell of the terminal device when the new cell arrives compared to a signal quality of a serving cell of the terminal device when the serving cell leaves or when the new cell arrives.
The terminal device of claim 21, wherein the first adjustment amount is used to characterize an adjustment amount of a new cell signal quality of the terminal device when the new cell arrives compared to a serving cell signal quality of the terminal device when the serving cell leaves;

wherein, the processing unit is specifically configured to:

acquiring the signal quality of a first serving cell of the terminal equipment when the serving cell leaves;

determining the sum of the signal quality of the first service cell, the first adjustment amount and the path loss difference as the signal quality of a new cell of the terminal equipment when the new cell arrives; the path loss difference is the difference of the path loss of the service link of the terminal equipment when the new cell arrives compared with the path loss of the service link of the terminal equipment when the service cell leaves;

And selecting and/or reselecting the cell based on the signal quality of the new cell of the terminal equipment when the new cell arrives.
The terminal device of claim 22, wherein the time of arrival of the new cell is located after the time of departure of the serving cell.
The terminal device according to claim 22 or 23, wherein the processing unit is further configured to:

the path loss difference is determined based on at least one of:

the location information of the terminal device, ephemeris information, time information of arrival of the new cell, and time information of departure of the serving cell.
The terminal device according to any of the claims 22 to 24, wherein the processing unit is further configured to:

and starting neighbor cell measurement when the service cell leaves.
The terminal device of claim 21, wherein the first adjustment amount is used to characterize an adjustment amount of a new cell signal quality of the terminal device at the time of arrival of the new cell as compared to a serving cell signal quality of the terminal device at the time of arrival of the new cell;

wherein, the processing unit is specifically configured to:

acquiring the signal quality of a second service cell of the terminal equipment when the new cell arrives;

Determining the sum of the signal quality of the second serving cell and the first adjustment amount as the signal quality of the new cell of the terminal equipment when the new cell arrives;

and selecting and/or reselecting the cell based on the signal quality of the new cell of the terminal equipment when the new cell arrives.
The terminal device of claim 26, wherein the time of arrival of the new cell is before the time of departure of the serving cell.
Terminal device according to claim 26 or 27, wherein the processing unit is specifically configured to:

and excluding the service cell in a cell selection and/or cell reselection ranking operation based on the new cell signal quality of the terminal device when the new cell arrives.
The terminal device according to any of the claims 21 to 28, characterized in that the terminal device further comprises:

and the communication unit is used for receiving the configuration information of the service cell, wherein the configuration information comprises the first adjustment quantity.
The terminal device according to claim 29, wherein the configuration information further comprises time information of departure of the serving cell and/or time information of arrival of the new cell.
Terminal device according to claim 29 or 30, characterized in that the communication unit is specifically adapted to:

and acquiring the configuration information of the service cell through a system message or a Radio Resource Control (RRC) dedicated signaling.
A terminal device according to any of claims 29 to 31, wherein the configuration information is applicable to scenarios in which a feeder link is switched.
A terminal device according to any of claims 29 to 32, wherein the new cell comprises a plurality of cells, the arrival times of some or all of which are the same or which are different from each other.
The terminal device according to any of the claims 29 to 33, characterized in that the first adjustment amount comprises at least one of:

the difference of the path loss of the feeder link when the new cell arrives and the path loss of the feeder link when the new cell leaves, the difference of the synchronous signal and/or physical broadcast channel block SSB transmitting power when the new cell arrives and the SSB transmitting power when the new cell leaves, or the difference of the satellite power amplification factor when the new cell arrives and the satellite power amplification factor when the new cell leaves.
A network device, comprising:

a communication unit, configured to send configuration information of a serving cell;

the configuration information comprises a first adjustment quantity, wherein the first adjustment quantity is used for representing the adjustment quantity of the signal quality of a new cell of the terminal equipment when the new cell arrives compared with the signal quality of a service cell of the terminal equipment when the service cell leaves or when the new cell arrives.
The network device of claim 35, wherein the configuration information further comprises time information of departure of the serving cell and/or time information of arrival of the new cell.
The network device according to claim 35 or 36, wherein the communication unit is specifically configured to:

and acquiring the configuration information of the service cell through system message broadcasting or RRC dedicated signaling.
The network device of any one of claims 35 to 37, wherein the configuration information is applicable to a scenario in which a feeder link is switched.
The network device according to any one of claims 35 to 38, wherein the new cell comprises a plurality of cells, and wherein arrival times of some or all of the plurality of cells are the same or the arrival times of the plurality of cells are different from each other.
The network device of any one of claims 35 to 39, wherein the first adjustment amount comprises at least one of:

the difference of the path loss of the feeder link when the new cell arrives and the path loss of the feeder link when the new cell leaves, the difference of the synchronous signal and/or physical broadcast channel block SSB transmitting power when the new cell arrives and the SSB transmitting power when the new cell leaves, or the difference of the satellite power amplification factor when the new cell arrives and the satellite power amplification factor when the new cell leaves.
A terminal device, comprising:

a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory to perform the method of any of claims 1 to 14.
A network device, comprising:

a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory to perform the method of any of claims 15 to 20.
A chip, comprising:

a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 14 or the method of any one of claims 15 to 20.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 14 or the method of any one of claims 15 to 20.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 14 or the method of any one of claims 15 to 20.
A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 1 to 14 or the method of any one of claims 15 to 20.