WO2023039829A1

WO2023039829A1 - Wireless communication method, terminal device, and network device

Info

Publication number: WO2023039829A1
Application number: PCT/CN2021/119054
Authority: WO
Inventors: 李海涛; 胡奕
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2023-03-23
Also published as: CN117561746A

Abstract

Provided are a wireless communication method, a terminal device, and a network device. The method comprises: a terminal device receives a first message sent by a network device, the first message comprising a first parameter, and the first parameter is a cell selection criterion parameter related to coverage enhancement. In the embodiment of the present application, on the basis that the influence of the coverage enhancement on a cell selection criterion is considered, the cell selection criterion parameter is adjusted, and a cell criterion parameter related to the coverage enhancement is introduced. In this way, for a terminal device supporting coverage enhancement, even if the channel quality is poor, the terminal device may also be possible to select and access a certain cell.

Description

Wireless communication method, terminal device and network device

technical field

The present application relates to the technical field of communication, and more specifically relates to a wireless communication method, a terminal device and a network device.

Background technique

Some terminal devices support coverage enhancement (CE). The current coverage enhancement technology enhances the random access process of the cell, so that terminal equipment with poor channel quality can also access the cell.

However, before performing cell access, the terminal device needs to perform cell selection first. The design of the existing cell selection criteria does not consider whether the terminal equipment supports coverage enhancement, resulting in that even if the terminal equipment supports coverage enhancement, it can only select and access a certain cell when the channel quality is good.

Contents of the invention

The present application provides a wireless communication method, terminal equipment and network equipment, so as to consider the impact of coverage enhancement on cell selection criteria.

In a first aspect, a wireless communication method is provided, including: a terminal device receives a first message sent by a network device, the first message includes a first parameter, and the first parameter is a cell selection criterion parameter related to coverage enhancement .

In a second aspect, a wireless communication method is provided, including: a network device sends a first message to a terminal device, where the first message includes a first parameter, and the first parameter is a cell selection criterion parameter related to coverage enhancement.

In a third aspect, a terminal device is provided, including: a receiving unit, configured to receive a first message sent by a network device, where the first message includes a first parameter, and the first parameter is a cell selection criterion related to coverage enhancement parameter.

In a fourth aspect, a network device is provided, including: a sending unit, configured to send a first message to a terminal device, where the first message includes a first parameter, and the first parameter is a cell selection criterion parameter related to coverage enhancement .

According to a fifth aspect, a terminal device is provided, including a memory and a processor, the memory is used to store a program, and the processor is used to invoke the program in the memory to execute the method according to the first aspect.

According to a sixth aspect, a network device is provided, including a memory and a processor, the memory is used to store a program, and the processor is used to invoke the program in the memory to execute the method described in the second aspect.

In a seventh aspect, an apparatus is provided, including a processor, configured to call a program from a memory to execute the method described in the first aspect.

In an eighth aspect, an apparatus is provided, including a processor, configured to call a program from a memory to execute the method described in the second aspect.

A ninth aspect provides a chip, including a processor, configured to call a program from a memory, so that a device installed with the chip executes the method described in the first aspect.

In a tenth aspect, a chip is provided, including a processor, configured to call a program from a memory, so that a device installed with the chip executes the method described in the second aspect.

In an eleventh aspect, a computer-readable storage medium is provided, on which a program is stored, and the program causes a computer to execute the method described in the first aspect.

In a twelfth aspect, a computer-readable storage medium is provided, on which a program is stored, and the program causes a computer to execute the method described in the second aspect.

A thirteenth aspect provides a computer program product, including a program, the program causes a computer to execute the method described in the first aspect.

A fourteenth aspect provides a computer program product, including a program, the program causes a computer to execute the method described in the second aspect.

A fifteenth aspect provides a computer program, the computer program causes a computer to execute the method described in the first aspect.

A sixteenth aspect provides a computer program, the computer program causes a computer to execute the method described in the second aspect.

In this embodiment of the present application, on the basis of considering the influence of coverage enhancement on the cell selection criterion, the parameter of the cell selection criterion is adjusted, and the parameter of the cell criterion related to the coverage enhancement is introduced. In this way, for a terminal device supporting coverage enhancement, it may be possible to select and access a certain cell even when the channel quality is poor.

Description of drawings

FIG. 1 is an exemplary diagram of a communication system to which the embodiments of the present application can be applied.

Fig. 2 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.

FIG. 3 is a comparison diagram of cell selection criterion parameters and cell coverage conditions provided by the embodiment of the present application.

Fig. 4 is a schematic flowchart of another wireless communication method provided by an embodiment of the present application.

FIG. 5 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.

FIG. 6 is a schematic structural diagram of a network device provided by an embodiment of the present application.

Fig. 7 is a schematic structural diagram of the device provided by the embodiment of the present application.

Detailed ways

The technical solution in this application will be described below with reference to the accompanying drawings.

FIG. 1 is a wireless communication system 100 applied in an embodiment of the present application. The wireless communication system 100 may include a network device 110 and a terminal device 120 . The network device 110 may be a device that communicates with the terminal device 120 . The network device 110 can provide communication coverage for a specific geographical area, and can communicate with the terminal device 120 located in the coverage area.

FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. The embodiment of the application does not limit this.

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

It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, for example: the fifth generation (5th generation, 5G) system or new radio (new radio, NR), long term evolution (long term evolution, LTE) system , LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, and satellite communication systems, and so on.

Among them, 5G researched by the 3rd generation partnership project (3GPP) aims to meet people's pursuit of speed, delay, high-speed mobility and energy efficiency, and adapt to the diversity and complexity of business in future life. The main application scenarios of 5G include: enhanced mobile broadband (eMBB), ultra-reliable & low latency communications (URLLC), and massive machine type communication (mMTC).

eMBB aims to provide users with multimedia content, services and data, and its demand is growing rapidly. On the other hand, since eMBB may be deployed in different scenarios, such as indoors, urban areas, and rural areas, the capabilities and requirements vary greatly, so it cannot be generalized and must be analyzed in detail in combination with specific deployment scenarios. Typical applications of URLLC include: industrial automation, electric power automation, telemedicine operations (surgery), traffic safety guarantee, etc. The typical characteristics of mMTC include: high connection density, small data volume, delay-insensitive services, low cost and long service life of modules, etc.

The terminal equipment in the embodiment of the present application may also be called user equipment (user equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station (mobile station, MS), mobile terminal (mobile terminal, MT) ), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in the embodiment of the present application may be a device that provides voice and/or data connectivity to users, and can be used to connect people, objects and machines, such as handheld devices with wireless connection functions, vehicle-mounted devices, and the like. The terminal device in the embodiment of the present application can be mobile phone (mobile phone), tablet computer (Pad), notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) equipment, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart Wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, etc. Optionally, UE can be used to act as a base station. For example, a UE may act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc. For example, a cell phone and an automobile communicate with each other using sidelink signals. Communication between cellular phones and smart home devices without relaying communication signals through base stations.

The network device in this embodiment of the present application may be a device for communicating with a terminal device, and the network device may also be called an access network device or a wireless access network device, for example, the network device may be a base station. The network device in this embodiment of the present application may refer to a radio access network (radio access network, RAN) node (or device) that connects a terminal device to a wireless network. The base station can broadly cover various names in the following, or replace with the following names, such as: Node B (NodeB), evolved base station (evolved NodeB, eNB), next generation base station (next generation NodeB, gNB), relay station, Access point, transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), primary station MeNB, secondary station SeNB, multi-standard wireless (MSR) node, home base station, network controller, access node , wireless node, access point (access point, AP), transmission node, transceiver node, base band unit (base band unit, BBU), remote radio unit (Remote Radio Unit, RRU), active antenna unit (active antenna unit) , AAU), radio head (remote radio head, RRH), central unit (central unit, CU), distributed unit (distributed unit, DU), positioning nodes, etc. A base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. A base station may also refer to a communication module, a modem or a chip configured in the aforementioned equipment or device. The base station can also be a mobile switching center, a device that undertakes the function of a base station in D2D, vehicle-to-everything (V2X), machine-to-machine (M2M) communication, and a device in a 6G network. Network equipment, equipment that assumes base station functions in future communication systems, etc. Base stations can support networks of the same or different access technologies. The embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.

Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, a helicopter or drone may be configured to serve as a device in communication with another base station.

In some deployments, the network device in this embodiment of the present application may refer to a CU or a DU, or, the network device includes a CU and a DU. A gNB may also include an AAU.

Network equipment and terminal equipment can be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the air. In the embodiment of the present application, the scenarios where the network device and the terminal device are located are not limited.

It should be understood that all or part of the functions of the communication device in this application may also be realized by software functions running on hardware, or by virtualization functions instantiated on a platform (such as a cloud platform).

In some communication systems (such as NR systems), the radio resource control (radio resource control, RRC) state may include RRC idle state (RRC_IDLE), RRC connected state (RRC_CONNECTED), and RRC inactive state (RRC_INACTIVE).

Under RRC_IDLE, there is no RRC connection between the terminal device and the network device. The mobility of the terminal equipment is mainly reflected in the cell selection/reselection based on the terminal equipment. Under RRC_IDLE, the paging process of the network device to the terminal device is initiated by the core network (core network, CN), and the paging area is configured by the CN. In addition, under RRC_IDLE, the network device does not have the access stratum (AS) context of the terminal device.

Under RRC_CONNECTED, there is an RRC connection between the terminal device and the network device. Both the network device and the terminal device store the AS context of the terminal device. Under RRC_CONNECTED, the location of the terminal equipment that the network equipment can know is the location of the cell level. Under RRC_CONNECTED, unicast data can be transmitted between the terminal device and the network device, and the mobility of the terminal device is managed and controlled by the network device.

RRC_INACTIVE is a new RRC state defined by the NR system. RRC_INACTIVE can reduce the air interface signaling of the communication system. In addition, the terminal equipment in RRC_INACTIVE can quickly restore the wireless connection and data service. Under RRC_INACTIVE, there is a connection between CN-NR. The AS context of the terminal device is stored on a certain network device. In addition, under RRC_INACTIVE, the paging process of the network device to the terminal device can be triggered by the radio access network (radio access network, RAN), and the paging area based on the RAN can be managed by the RAN. In addition, under RRC_INACTIVE, the location of the terminal equipment that the network equipment can know is based on the paging area level of the RAN, and the mobility of the terminal equipment is mainly reflected in the cell selection/reselection based on the terminal equipment.

cell selection

In case of unclear distinction, cell selection mentioned in this application may also refer to cell reselection. Whether the terminal device selects a certain cell is related to the coverage of the cell. When the location of the terminal device is within the coverage of a certain cell, the terminal device can select the cell. The terminal device can evaluate whether the terminal is within the range covered by the cell according to the cell selection criterion parameter (also referred to as the cell selection parameter or the S criterion parameter), so as to realize the cell selection.

The cell selection criterion parameter may include at least one of the following parameters, for example: a minimum required RX level in the cell, a minimum required quality level in the cell, a terminal The reference signal receiving power (RSRP) measured by the device, the reference signal receiving quality (RSRQ) measured by the terminal device, the offset of the minimum required receiving level in the cell, and the offset temporarily applied to the cell Offset, the offset of the minimum required quality level in the cell, the offset and power compensation temporarily applied to the cell, and parameters for some special scenarios.

It should be noted that the minimum required reception level in the cell may also be referred to as the minimum RSRP required by the network device. The minimum required quality level in a cell may also be referred to as minimum RSRQ required by network equipment. The offset of the minimum required reception level in the cell and the offset of the minimum required quality level in the cell are to prevent the ping-pong effect between two public land mobile networks (PLMN) due to radio environment fluctuations Offset. The power compensation is the greater value between the difference between the maximum transmit power value of the terminal device and the maximum radio frequency output power value and 0. The offset temporarily applied to the cell can be used in special scenarios, and it may not be applicable in normal situations, for example, it can be used in the "Chiba problem" scenario.

Based on the above cell selection criteria parameters, the cell selection criteria can be: if and only when the cell selection reception level value Srxlev and the cell selection quality value Squal of a certain cell satisfy Srxlev>0 and Squal>0 at the same time, the terminal device can select the cell . Among them, the calculation formulas of Srxlev and Squal are as follows:

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

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

Wherein, Q _rxlevmeas and Q _qualmeas may be RSRP and RSRQ measured by the terminal device respectively.

Q _rxlevmin and Q _qualmin may be the minimum RSRP required by the network device and the minimum RSRQ required by the network device, respectively.

Q _{rxlevminoffset} and Q _{qualminoffset} may be the offset of the minimum required reception level in the cell and the offset of the minimum required quality level in the cell, respectively. For example, Q _{rxlevminoffset} and Q _{qualminoffset} may be offsets that need to be used when the terminal equipment camps on a suitable cell of the visited PLMN and periodically searches for a higher priority PLMN.

P _compensation may be power compensation. For example, when the maximum transmit power allowed by the network device is greater than the maximum uplink transmit power determined by the capability of the terminal device itself, P _compensation may be power compensation due to low power of the terminal device. Qoffset _temp can be an offset temporarily applied to the cell, which is used in special scenarios, and may not be applicable in normal situations.

The terminal device can obtain the cell selection criterion parameter from the message sent by the network device. Taking the offset of the minimum required reception level in the cell as an example, the terminal device can receive the system message sent by the network device, and obtain the minimum RSRP required by the network device from the q-RxLevMinCE parameter in the system message, that is, Q _rxlevmin in the above formula .

Supplementary uplink (supplementary uplink, SUL)

Some communication systems (such as NR systems) can support supplementary uplink (supplementary uplink, SUL). A network device supporting SUL can provide a terminal device with two carriers carrying uplinks, namely a normal uplink (normal uplink, NUL) carrier and a SUL carrier. Compared with NUL, SUL carriers can be in lower frequency bands. Compared with high-frequency carriers, low-frequency carriers have the advantage of larger coverage. It can be seen that the SUL carrier can expand the uplink coverage of the cell.

If SUL is supported, the network device can provide two cell selection criteria, which are used for NUL and SUL respectively. For example, the network device may provide different cell selection criterion parameters for SUL and NUL respectively. For example, the network device may provide a cell selection criterion parameter RxLevMinSUL for SUL and/or a cell selection criterion parameter RxLevMin for NUL. The terminal device may obtain the minimum RSRP parameter Q _rxlevmin required by the network device in the cell selection criterion parameter from RxLevMinSUL and/or RxLevMin. For example, the terminal device judges the capability of the terminal device after acquiring the parameters related to the cell selection criteria sent by the network device. When the terminal device supports SUL, Q _rxlevmin can be obtained from RxLevMinSUL, and when the terminal device does not support SUL, Q _rxlevmin can be obtained from RxLevMin.

coverage enhancement

Certain terminal devices support coverage enhancement, such as uplink coverage enhancement. The uplink coverage enhancement includes the enhancement of the random access procedure of the cell. For example, in the random access process, the physical uplink shared channel (physical uplink shared channel, PUSCH) carrying message 3 (message 3, or Msg3 for short) can be repeatedly transmitted (ie, PUSCH repetition) to achieve coverage enhancement of Msg3 . Exemplarily, when the measured RSRP value is lower than a pre-configured threshold, the terminal device may request Msg3 PUSCH repetition through message 1 (message 1, or Msg1 for short). After the network device receives the specific Msg1, it can pass the uplink scheduling grant (uplink grant, UL grant) in the random access response (random access response, RAR) in message 2 (message 2, or Msg2 for short) as The terminal device allocates resources for Msg3 PUSCH repetition.

If a certain terminal device supports coverage enhancement, it may be possible to perform cell access even if the channel quality of the terminal device is poor. However, before performing cell access, the terminal device needs to perform cell selection first. The design of the existing cell selection criteria does not consider whether the terminal equipment supports coverage enhancement, resulting in that even if the terminal equipment supports coverage enhancement, it can only select and access a cell when the channel quality is good.

For example, assume that the channel quality of a terminal device is poor, but the terminal device supports coverage enhancement, so that the terminal device can achieve the signal quality required to access a certain cell based on Msg3 PUSCH repetition even under poor channel quality threshold. However, since the current cell selection criterion does not consider coverage enhancement, the terminal device will only select the cell when the channel quality condition is good. It can be seen that the coverage enhancement is not considered in the cell selection criteria, which will lead to the following phenomenon: Even if the terminal equipment has the ability to successfully access a certain cell based on the coverage enhancement, it still cannot enter the cell because the terminal equipment cannot The cell is selected.

In addition, as mentioned above, the network device configures corresponding cell selection criterion parameters for SUL and NUL. In some embodiments, when considering the impact of coverage enhancement on cell selection criterion parameters, the impact of coverage enhancement on SUL and NUL also needs to be considered.

The following describes the embodiment of the present application in detail with reference to FIG. 2 .

FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application. The method in FIG. 2 is described from the perspective of interaction between a terminal device and a network device.

In step S210, the network device sends a first message to the terminal device.

The first message may be a system message or a system information block message. The system information block message may refer to a system information block (system information block, SIB) message, or may refer to a master information block (master information block, MIB) message. Taking the SIB message as an example, the first message may be one of the following messages: SIB1, SIB2, SIB3 or SIB4.

For different cell types, the first message may be carried in different system information blocks. The cell types mentioned here may include a serving cell, a same-frequency neighboring cell, and/or a different-frequency neighboring cell.

The first message may include information about the serving cell and/or information about the neighbor cell. The information about adjacent cells may include information about same-frequency adjacent cells and/or information about inter-frequency adjacent cells. For example, if the first message includes information about the serving cell, the first message may be a SIB1 message, that is, the information about the serving cell may be configured through the SIB1 message. If the first message includes information about adjacent cells in the same frequency, the first message may be a SIB2 message or a SIB3 message, that is, information about adjacent cells in the same frequency may be configured through the SIB2 message or the SIB3 message. If the first message includes inter-frequency neighboring cell-related information, the first message may be a SIB4 message, that is, inter-frequency neighboring cell-related information may be configured through SIB4. Through the SIB4 message, the network device can respectively configure the related information of different-frequency adjacent cells for each different-frequency frequency point.

The first message may include a first parameter. The first parameter is (or used to determine, or used to indicate) a cell selection criterion parameter related to coverage enhancement. The setting of the cell selection criteria parameters related to coverage enhancement can enable the terminal equipment to meet the cell selection criteria even when the channel quality is poor. For example, compared with traditional cell selection criterion parameters (cell criterion parameters irrelevant to coverage enhancement), a lower threshold or threshold value may be set for coverage enhancement-related cell selection criterion parameters. For example, the minimum required reception level in a cell and/or the minimum required quality level in a cell in the cell selection criterion parameters related to coverage enhancement may be set lower.

The first parameter may be one of the following: a cell selection criterion parameter for the serving cell; a cell selection criterion parameter for same-frequency adjacent cells; and a cell selection criterion parameter for inter-frequency adjacent cells.

If the first parameter is a cell selection criterion parameter for the serving cell, the first message may be a SIB1 message. In other words, the first parameter can be configured by the SIB1 message.

If the first parameter is a cell selection criterion parameter for co-frequency neighboring cells, the first message may be a SIB2 message or a SIB3 message. In other words, the first parameter can be configured by a SIB2 message or a SIB3 message.

If the first parameter is a cell selection criterion parameter for inter-frequency neighboring cells, the first message is a SIB4 message. In other words, the first parameter can be configured by the SIB4 message.

The terminal device may be a terminal device supporting coverage enhancement, or a terminal device not supporting coverage enhancement. If the terminal device supports coverage enhancement, the terminal device can determine whether the terminal device satisfies the cell selection criterion based on the first parameter; Whether the cell selection criteria are met.

In some embodiments, the first parameter may be a cell selection criterion parameter for SUL and/or a cell selection criterion parameter for NUL. Different parameters may be used by terminal devices of different capabilities. The cell selection criterion parameter for SUL can be used by terminal equipment supporting SUL and supporting coverage enhancement. The cell selection criterion parameter for NUL can be used by terminal equipment that does not support SUL but supports coverage enhancement.

In some embodiments, the cell selection criterion parameters for SUL may include at least one of the following parameters:

The first criterion parameter is the minimum required reception level in the cell after coverage enhancement;

The second criterion parameter is the minimum required quality level in the cell after coverage enhancement;

The third criterion parameter is the offset of the minimum required receiving level in the cell after coverage enhancement;

The fourth criterion parameter is the offset of the minimum required quality level in the cell after coverage enhancement;

The fifth criterion parameter is the offset temporarily applied to the cell after coverage enhancement;

The sixth criterion parameter is power compensation after coverage enhancement, and the power compensation is the larger value between the difference between the maximum transmit power value and the maximum radio frequency output power value of the terminal device and 0.

In some embodiments, the cell selection criterion parameters for NUL include at least one of the following parameters:

The seventh criterion parameter is the minimum required receiving level in the cell after coverage enhancement;

The eighth criterion parameter is the minimum required quality level in the cell after coverage enhancement;

The ninth criterion parameter is the offset of the minimum required reception level in the cell after coverage enhancement;

The tenth criterion parameter is the offset of the minimum required quality level in the cell after coverage enhancement;

The eleventh criterion parameter is the offset temporarily applied to the cell after coverage enhancement;

The twelfth criterion parameter is power compensation after coverage enhancement, and the power compensation is the greater value between the difference between the maximum transmit power value and the maximum radio frequency output power value of the terminal equipment and 0.

The terminal device may acquire the cell selection criterion parameter for SUL or the cell selection criterion parameter for NUL from the first message according to its own capability. For example, if the terminal device supports SUL and supports coverage enhancement, the terminal device may acquire the cell selection criterion parameter for SUL related to coverage enhancement from the first message. For another example, if the terminal device supports coverage enhancement but does not support SUL, the terminal device may acquire the cell selection criterion parameter for NUL related to coverage enhancement from the first message.

The following takes the cell selection criterion parameter of the minimum required receiving level in the cell as an example for illustration. The first message sent by the network device may include the first criterion parameter q-RxLevMinSULCE for SUL and/or the seventh criterion parameter q-RxLevMinCE for NUL. When the terminal is set to support coverage enhancement and support SUL, the terminal device can obtain the minimum required reception level in the cell after coverage enhancement for SUL through the first criterion parameter q-RxLevMinSULCE, that is, Q _rxlevmin in the S criterion, so as to calculate the cell selection reception level Level value Srxlev. Or when the terminal supports coverage enhancement but does not support SUL, the terminal device can use the seventh criterion parameter q-RxLevMinCE to obtain the minimum required reception level in the cell after coverage enhancement for NUL, that is, Q _rxlevmin in the S criterion, so as to calculate Srxlev.

In some embodiments, the first message may also include cell selection criterion parameters not related to coverage enhancement. The cell selection criterion parameter may be a traditional cell selection criterion parameter, for example, may include q-RxLevMin or q-RxLevMinSUL. If the terminal device does not support the cell selection criterion parameter unrelated to coverage enhancement, the terminal device may acquire the cell selection criterion parameter unrelated to coverage enhancement from the first message.

It should be noted that, in some embodiments, the terminal device supports SUL and supports coverage enhancement, which may also be referred to as the terminal device supports coverage enhancement on SUL. In some embodiments, the terminal device does not support SUL but supports coverage enhancement, it may also be called that the terminal device supports coverage enhancement and NUL at the same time, or the terminal device supports coverage enhancement on NUL.

In some embodiments, the cell selection criterion parameter related to coverage enhancement and aimed at SUL may also be referred to as the cell selection criterion parameter related to coverage enhancement on SUL. In some embodiments, the coverage enhancement-related and NUL-specific cell selection criterion parameters may be referred to as coverage enhancement-related cell selection criterion parameters on NUL.

Depending on the circumstances in which a cell supports SUL and coverage enhancement, the coverage of the cell will also vary. Fig. 3 shows the correspondence between the type of the first parameter and the coverage of the cell. Referring to FIG. 3 , each circular area represents the coverage area of a cell in different situations. The center of the circular area can be understood as the center of the cell. The farther away from the cell center, the smaller the RSRP. If the cell supports neither NUL nor coverage enhancement, the coverage range is the smallest as indicated by the NUL marked range. If the cell does not support SUL and supports coverage enhancement, the coverage area is shown in the range marked by NUL CE, and the coverage area is larger than NUL. If the cell does not support coverage enhancement and supports SUL, the coverage area is shown as the range marked by SUL, and the coverage area is larger than NUL. When a cell supports coverage enhancement and SUL at the same time, coverage enhancement can further expand the coverage of SUL, as indicated by the range of SUL CE mark.

Fig. 3 also shows cell selection criterion parameters under different cell coverages. Taking the cell selection criterion parameter of the minimum required reception level in a cell as an example, for the NUL range, the existing q-RxLevMin can be used as the cell selection criterion parameter. For NUL CE, the seventh criterion parameter q-RxLevMinCE related to coverage enhancement and aimed at NUL can be used as the cell selection criterion parameter. For SUL, the existing q-RxLevMinSUL can be used as a cell selection criterion parameter. For SUL CE, the first criterion parameter q-RxLevMinSULCE related to coverage enhancement and aimed at SUL can be used as the cell selection criterion parameter.

Continuing to take the cell selection criterion parameter of the minimum required reception level in the cell as an example, for different types of cells, the first parameter may include the seventh criterion parameter q-RxLevMinCE for NUL and/or the first criterion parameter for SUL q-RxLevMinSULCE. For example, q-RxLevMinCE and/or q-RxLevMinSULCE in SIB1 may be cell selection criterion parameters for the serving cell, q-RxLevMinCE may be used by terminal devices that do not support SUL but support coverage enhancement, and q-RxLevMinSULCE may be used by terminal devices that support SUL and End-device usage that supports coverage enhancement. Alternatively, q-RxLevMinCE and/or q-RxLevMinSULCE in SIB2 can be cell selection criteria parameters for co-frequency adjacent cells, q-RxLevMinCE can be used by terminal devices that do not support SUL but support coverage enhancement, and q-RxLevMinSULCE can be used for supporting SUL and supports the use of terminal equipment with enhanced coverage. Alternatively, q-RxLevMinCE and/or q-RxLevMinSULCE in SIB4 can be cell selection criteria parameters for inter-frequency adjacent cells, q-RxLevMinCE can be used by terminal devices that do not support SUL but support coverage enhancement, and q-RxLevMinSULCE can be used for supporting It is used by terminal equipment that supports SUL and coverage enhancement capabilities.

The terminal device can determine parameters related to the cell selection criterion according to its own capabilities and evaluate whether the cell meets the cell selection criterion. FIG. 4 is a communication method provided by an embodiment of the present application. The communication method can be performed by a terminal device. It should be noted that, the embodiment shown in FIG. 4 is described by taking the first criterion parameter and/or the seventh criterion parameter as an example. It can be understood that the method shown in FIG. 4 can be applied to other cell selection criterion parameters for SUL and/or cell selection criterion parameters for NUL, such as the second criterion parameter and the third criterion parameter mentioned above.

The method shown in FIG. 4 may include steps S402 to S420. These steps are illustrated in more detail below.

In step S402, the terminal device reads the first message to obtain the first parameter.

In step S404, the terminal device judges the capability of the terminal device. If the terminal device supports coverage enhancement, it is further judged whether the terminal device supports SUL.

In step S406, if the terminal device judges that it supports SUL and supports coverage enhancement, the terminal device may perform steps S408 to S412.

In step S408, for the serving cell, if the first criterion parameter q-RxLevMinSULCE related to coverage enhancement and aimed at SUL is configured in the SIB1 message, the cell selection criterion parameter Q _rxlevmin of the serving cell is obtained from q-RxLevMinSULCE. If q-RxLevMinSULCE is not configured in the SIB1 message but the parameter q-RxLevMinSUL for SUL not related to coverage enhancement is configured, the Q _rxlevmin of the serving cell is obtained from q-RxLevMinSUL.

In step S410, for co-frequency neighboring cells, if the first criterion parameter q-RxLevMinSULCE related to coverage enhancement and aimed at SUL is configured in the SIB2 message, the cell selection criterion parameter Q _rxlevmin of co-frequency neighboring cells is obtained from q-RxLevMinSULCE. If q-RxLevMinSULCE is not configured in the SIB2 message but the parameter q-RxLevMinSUL for SUL that is not related to coverage enhancement is configured, the Q _rxlevmin of the co-frequency adjacent cell is obtained from q-RxLevMinSUL.

In step S412, for inter-frequency neighboring cells, if the first criterion parameter q-RxLevMinSULCE related to coverage enhancement and aimed at SUL is configured in the SIB3 message, the cell selection criterion parameter Q _rxlevmin of inter-frequency neighboring cells is obtained from q-RxLevMinSULCE. If q-RxLevMinSULCE is not configured in the SIB3 message but the parameter q-RxLevMinSUL for SUL that is not related to coverage enhancement is configured, the Q _rxlevmin of the inter-frequency adjacent cell is obtained from q-RxLevMinSUL.

In step S414, if the terminal device judges that it does not support SUL but supports coverage enhancement, the terminal device may perform steps S416 to S420.

In step S416, for the serving cell, if the seventh criterion parameter q-RxLevMinCE related to coverage enhancement and aimed at NUL is configured in the SIB1 message, the cell selection criterion parameter Q _rxlevmin of the serving cell is obtained from q-RxLevMinCE. If q-RxLevMinCE is not configured in the SIB1 message, the Q _rxlevmin of the serving cell is obtained from the parameter RxLevMin for NUL that is not related to coverage enhancement in SIB1.

In step S418, for co-frequency neighboring cells, if the seventh criterion parameter q-RxLevMinCE related to coverage enhancement and aimed at NUL is configured in the SIB2 message, the cell selection criterion parameter Q _rxlevmin of co-frequency neighboring cells is obtained from q-RxLevMinCE. If q-RxLevMinCE is not configured in the SIB2 message, the Q _rxlevmin of the same-frequency adjacent cell is obtained from the parameter RxLevMin for NUL that is not related to coverage enhancement in SIB2.

In step S420, for inter-frequency adjacent cells, if the seventh criterion parameter q-RxLevMinCE related to coverage enhancement and aimed at NUL is configured in the SIB4 message, the cell selection criterion parameter Q _rxlevmin of inter-frequency adjacent cells is obtained from q-RxLevMinCE. If q-RxLevMinCE is not configured in the SIB4 message, the Q _rxlevmin of the inter-frequency adjacent cell is obtained from the parameter RxLevMin for NUL that is not related to coverage enhancement in SIB4.

After acquiring the parameter of the cell selection criterion, the terminal device can evaluate whether the cell satisfies the cell selection criterion. The cell selection criterion can be as described above, that is, Srxlev>0 and Squal>0. in,

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

For the description of the cell selection criterion, refer to the above in detail, and will not be repeated here.

It should be noted that Fig. 3 and Fig. 4 take the cell selection criterion parameter as the minimum RSRP required by the network equipment as an example, the embodiment of the present application is not limited thereto, the cell selection criterion parameter may also be other types of cell selection Criterion parameters, such as one or more of the following parameters: RSRQ measured by terminal equipment, offset to prevent ping-pong effect between two PLMNs due to radio environment fluctuations, power compensation, and parameters for some special scenarios .

In some embodiments, the first parameter may be a cell specific offset for one or more neighboring cells. For example, an offset related to coverage enhancement may be defined or configured for one or more neighboring cells of the current cell of the terminal device. The offset may be a cell-specific offset, that is, each neighboring cell may have its own specific offset. The cell-specific offsets of different neighboring cells may be the same or different.

The neighboring cells may be co-frequency neighboring cells or inter-frequency neighboring cells. If the first parameter is a cell-specific offset for same-frequency adjacent cells, the first message may be SIB3; if the first parameter is a cell-specific offset for inter-frequency adjacent cells, the first message may be SIB4.

In some embodiments, the cell-specific offset may be a common cell-specific offset for NUL and SUL. The cell-specific offset shared by NUL and SUL can be represented by Q _{rxlevminoffsetcellCECommon} . No matter whether the terminal equipment supports SUL or not, the cell selection criterion parameter for one or more adjacent cells (the cell selection criterion parameter can be obtained according to the method of the above-mentioned embodiment) can be combined with the cell-specific offset shared by NUL and SUL. Shifts are superimposed to obtain cell selection criteria parameters for one or more neighboring cells. In other words, if the terminal device performs the offset superposition operation, the parameters obtained after superposition are cell selection criterion parameters for one or more neighboring cells. Of course, if the terminal device does not perform the offset superposition operation, the cell selection criterion parameters for one or more neighboring cells obtained in the above-mentioned embodiment can still be used as the cell selection for one or more neighboring cells Criterion parameters.

Exemplarily, for the cell-specific offset being a cell-specific offset shared by NUL and SUL, the terminal device may perform one or more of the following steps:

For a specific co-frequency neighbor cell, if the terminal device supports coverage enhancement, and Q _{rxlevminoffsetcellCECommon} is configured for this cell in SIB3, the terminal device can superimpose Q _{rxlevminoffsetcellCECommon} on the cell selection criterion parameter Q _rxlevmin for one or more neighboring cells, Thus, cell selection criterion parameters for the one or more neighboring cells are obtained.

For a specific inter-frequency neighboring cell, if the terminal device supports coverage enhancement, and SIB4 is configured with Q _{rxlevminoffsetcellCECommon} for this cell, the terminal device can superimpose the Q _{rxlevminoffsetcellCECommon} on the cell selection criterion parameter Q _rxlevmin for one or more neighboring cells , so as to obtain the cell selection criterion parameter for the one or more neighboring cells.

The cell-specific offset may also include a first offset for SUL and/or a second offset for NUL. The first offset can be represented by Q _{rxlevminoffsetcellCESUL} , and the second offset can be represented by _{QrxlevminoffsetcellCE} .

When the terminal device supports SUL, the cell selection criterion parameter for one or more neighboring cells may be superimposed with the first offset, so as to obtain the cell selection criterion parameter for one or more neighboring cells. In other words, if the terminal device performs the first offset superposition operation, the parameters obtained after the superposition are cell selection criterion parameters for one or more neighboring cells. Of course, if the terminal device does not perform the first offset superposition operation, the cell selection criterion parameters for one or more neighboring cells obtained in the embodiment described above can still be used as the parameters for one or more neighboring cells Cell selection criterion parameter.

When the terminal device does not support SUL, the cell selection criterion parameter for one or more neighboring cells may be superimposed with the second offset, so as to obtain the cell selection criterion parameter for one or more neighboring cells. In other words, if the terminal device performs the second offset superposition operation, the parameters obtained after the superposition are cell selection criterion parameters for one or more neighboring cells. Of course, if the terminal device does not perform the second offset superposition operation, the cell selection criterion parameters for one or more neighboring cells obtained in the embodiment described above can still be used as the parameters for one or more neighboring cells Cell selection criterion parameter.

Taking the selection criteria parameter of the minimum required reception level in a cell as an example, the cell-specific offset includes the first offset for SUL and/or the second offset for NUL, and the terminal device can perform one of the following: or multiple steps:

For a specific co-frequency neighbor cell, if the terminal device supports SUL and coverage enhancement, and SIB3 is configured with Q _{rxlevminoffsetcellCESUL} for this cell, the terminal device can superimpose on the cell selection criterion parameter Q _rxlevmin for one or more neighboring cells The Q _{rxlevminoffsetcellCESUL} thus obtains the cell selection criterion parameter for the one or more neighboring cells.

For a specific co-frequency neighbor cell, if the terminal device does not support SUL but supports coverage enhancement, and SIB3 is configured with Q _{rxlevminoffsetcellCE} for this cell, the terminal device can use the cell selection criterion parameter Q _rxlevmin for one or more neighboring cells The Q _{rxlevminoffsetcellCES} is superimposed to obtain the cell selection criterion parameter for the one or more neighboring cells.

For a specific inter-frequency neighboring cell, if the terminal device supports SUL and coverage enhancement, and SIB4 is configured with Q _{rxlevminoffsetcellCESUL} for this cell, the terminal device can superimpose on the cell selection criterion parameter Q _rxlevmin for one or more neighboring cells The Q _{rxlevminoffsetcellCESUL} thus obtains the cell selection criterion parameter for the one or more neighboring cells.

For a specific inter-frequency neighboring cell, if the terminal device does not support SUL but supports coverage enhancement, and SIB4 is configured with Q _{rxlevminoffsetcellCE} for this cell, the terminal device can use the cell selection criterion parameter Q _rxlevmin for one or more neighboring cells The Q _{rxlevminoffsetcellCES} is superimposed to obtain the cell selection criterion parameter for the one or more neighboring cells.

It should be noted that the present application does not limit the method for obtaining the cell selection criterion parameter Q _rxlevmin . Q _rxlevmin can be obtained, for example, from the examples described above.

This application introduces a cell-specific offset related to coverage enhancement for a specific neighboring cell. The ability to support coverage enhancement of each neighboring cell can be indicated more flexibly, and the terminal device can use the coverage enhancement capability to evaluate the neighboring cell during cell reselection.

The method embodiment of the present application is described in detail above with reference to FIG. 1 to FIG. 4 , and the device embodiment of the present application is described in detail below in conjunction with FIG. 5 to FIG. 7 . It should be understood that the descriptions of the method embodiments correspond to the descriptions of the device embodiments, therefore, for parts not described in detail, reference may be made to the foregoing method embodiments.

FIG. 5 is a schematic structural diagram of a terminal device provided by an embodiment of the present application. The terminal device 500 shown in FIG. 5 may include a receiving unit 510 .

The receiving unit 510 is configured to receive a first message sent by a network device, where the first message includes a first parameter, and the first parameter is a cell selection criterion parameter related to coverage enhancement.

Optionally, the first parameter is a cell selection criterion parameter for the auxiliary uplink SUL and/or a cell selection criterion parameter for the normal uplink NUL.

Optionally, the cell selection criterion parameters for SUL include at least one of the following parameters: the first criterion parameter is the minimum required receiving level in the cell after coverage enhancement; the second criterion parameter is the minimum required reception level in the cell after coverage enhancement; The minimum required quality level; the third criterion parameter is the offset of the minimum required reception level in the cell after coverage enhancement; the fourth criterion parameter is the offset of the minimum required quality level in the cell after coverage enhancement; the fifth The criterion parameter is the offset temporarily applied to the cell after the coverage enhancement; the sixth criterion parameter is the power compensation after the coverage enhancement, and the power compensation is the sum of the difference between the maximum transmit power value and the maximum radio frequency output power value of the terminal equipment The larger value among 0 and/or the cell selection criterion parameter for NUL includes at least one of the following parameters: the seventh criterion parameter is the minimum required reception level in the cell after coverage enhancement; the eighth criterion parameter is The minimum required quality level in the cell after coverage enhancement; the ninth criterion parameter is the offset of the minimum required reception level in the cell after coverage enhancement; the tenth criterion parameter is the offset of the minimum required quality level in the cell after coverage enhancement offset; the eleventh criterion parameter is the offset temporarily applied to the cell after the coverage enhancement; the twelfth criterion parameter is the power compensation after the coverage enhancement, and the power compensation is the maximum transmission power value and the maximum The greater value of the difference between the RF output power value and 0.

Optionally, the terminal device 500 further includes: a first obtaining unit 520, configured to obtain the cell selection criterion parameter for SUL from the first message if the terminal device supports SUL; or, the second The second obtaining unit 530 is configured to obtain the cell selection criterion parameter for NUL from the first message if the terminal device does not support SUL.

Optionally, the first message is a system information block message.

Optionally, for different cell types, the first message is carried in different system information blocks.

Optionally, the cell type includes a serving cell, a same-frequency neighboring cell, and/or a different-frequency neighboring cell.

Optionally, if the first parameter is a cell selection criterion parameter for the serving cell, the first message is a system information block SIB1 message; or, if the first parameter is a cell selection criterion for co-frequency neighboring cells parameter, the first message is a SIB2 message; or, if the first parameter is a cell selection criterion parameter for inter-frequency adjacent cells, the first message is a SIB4 message.

Optionally, the first parameter is a cell-specific offset for one or more neighboring cells.

Optionally, the cell-specific offset is a cell-specific offset shared by NUL and SUL.

Optionally, the terminal device 500 further includes: a first superposition unit, configured to superimpose the cell selection criterion parameters for the one or more neighboring cells and the cell-specific offset to obtain the Cell selection criterion parameters for multiple neighboring cells.

Optionally, the cell-specific offset is a first offset for SUL and/or a second offset for NUL.

Optionally, the terminal device 500 further includes: a second superposition unit, configured to, if the terminal device supports SUL, combine the cell selection criterion parameters for the one or more neighboring cells and the first offset The parameters of the cell selection criteria for the one or more neighboring cells are superimposed to obtain the cell selection criterion parameters for the one or more neighboring cells; or, if the terminal device does not support SUL, the cell selection criterion parameters for the one or more neighboring cells and the first The two offsets are superimposed to obtain cell selection criterion parameters for the one or more neighboring cells.

Optionally, the first parameter is a cell-specific offset for same-frequency adjacent cells; or, the first parameter is a cell-specific offset for inter-frequency adjacent cells.

Optionally, if the first parameter is the cell-specific offset for the same-frequency neighboring cell, the first message is a SIB3 message; or, if the first parameter is the cell-specific offset for the inter-frequency neighboring cell The cell-specific offset, the first message is a SIB4 message.

Optionally, the cell selection criterion parameter includes a minimum required reception level in a cell and/or a minimum required quality level in a cell.

FIG. 6 is a schematic structural diagram of a terminal device provided by an embodiment of the present application. The network device 600 shown in FIG. 6 may include a sending unit 610 .

The sending unit 610 may be configured to send a first message to the terminal device, where the first message includes a first parameter, where the first parameter is a cell selection criterion parameter related to coverage enhancement.

Optionally, the cell selection criterion parameters for SUL include at least one of the following parameters: the first criterion parameter is the minimum required receiving level in the cell after coverage enhancement; the second criterion parameter is the minimum required reception level in the cell after coverage enhancement; The minimum required quality level; the third criterion parameter is the offset of the minimum required reception level in the cell after coverage enhancement; the fourth criterion parameter is the offset of the minimum required quality level in the cell after coverage enhancement; the fifth The criterion parameter is the offset temporarily applied to the cell after the coverage enhancement; the sixth criterion parameter is the power compensation after the coverage enhancement, and the power compensation is the sum of the difference between the maximum transmit power value and the maximum radio frequency output power value of the terminal equipment A larger value in 0; and/or the cell selection criterion parameter for NUL includes at least one of the following parameters: the seventh criterion parameter, which is the minimum required reception level in the cell after coverage enhancement; the eighth criterion parameter, is the minimum required quality level in the cell after coverage enhancement; the ninth criterion parameter is the offset of the minimum required reception level in the cell after coverage enhancement; the tenth criterion parameter is the minimum required quality level in the cell after coverage enhancement offset; the eleventh criterion parameter is the offset temporarily applied to the cell after the coverage enhancement; the twelfth criterion parameter is the power compensation after the coverage enhancement, and the power compensation is the maximum transmission power value of the terminal equipment and The greater value between the difference between the maximum RF output power value and 0. Optionally, the first message is a system information block message.

Fig. 7 is a schematic structural diagram of a device according to an embodiment of the present application. The dotted line in Figure 7 indicates that the unit or module is optional. The apparatus 700 may be used to implement the methods described in the foregoing method embodiments. Apparatus 700 may be a chip, a terminal device or a network device.

Apparatus 700 may include one or more processors 710 . The processor 710 may support the device 700 to implement the methods described in the foregoing method embodiments. The processor 710 may be a general purpose processor or a special purpose processor. For example, the processor may be a central processing unit (central processing unit, CPU). Alternatively, the processor can also be other general-purpose processors, digital signal processors (digital signal processors, DSPs), application specific integrated circuits (application specific integrated circuits, ASICs), off-the-shelf programmable gate arrays (field programmable gate arrays, FPGAs) Or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

Apparatus 700 may also include one or more memories 720 . A program is stored in the memory 720, and the program can be executed by the processor 710, so that the processor 710 executes the methods described in the foregoing method embodiments. The memory 720 may be independent from the processor 710 or may be integrated in the processor 710 .

Apparatus 700 may also include a transceiver 730 . The processor 710 can communicate with other devices or chips through the transceiver 730 . For example, the processor 710 may send and receive data with other devices or chips through the transceiver 730 .

The embodiment of the present application also provides a computer-readable storage medium for storing programs. The computer-readable storage medium can be applied to the terminal or the network device provided in the embodiments of the present application, and the program enables the computer to execute the methods performed by the terminal or the network device in the various embodiments of the present application.

The embodiment of the present application also provides a computer program product. The computer program product includes programs. The computer program product can be applied to the terminal or the network device provided in the embodiments of the present application, and the program enables the computer to execute the methods performed by the terminal or the network device in the various embodiments of the present application.

The embodiment of the present application also provides a computer program. The computer program can be applied to the terminal or the network device provided in the embodiments of the present application, and the computer program enables the computer to execute the methods performed by the terminal or the network device in the various embodiments of the present application.

It should be understood that the terms "system" and "network" may be used interchangeably in this application. In addition, the terms used in the application are only used to explain the specific embodiments of the application, and are not intended to limit the application. The terms "first", "second", "third" and "fourth" in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion.

It should be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.

In this embodiment of the application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is instructed, configures and is configured, etc. relation.

In the embodiment of this application, "pre-configuration" can be realized by pre-saving corresponding codes, tables, or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices). The implementation method is not limited.

In the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, which is not limited in the present application.

The term "and/or" in the embodiment of the present application is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and/or B, which can mean: A exists alone, and A and B exist at the same time , there are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

In various embodiments of the present application, the serial numbers of the above-mentioned processes do not mean the order of execution, and the execution order of each process should be determined by its functions and internal logic, rather than the implementation process of the embodiments of the present application. constitute any limitation.

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

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be read by a computer, or a data storage device including a server, a data center, and the like integrated with one or more available media. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital versatile disc (digital video disc, DVD)) or a semiconductor medium (for example, a solid state disk (solid state disk, SSD) )wait.

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims

A method for wireless communication, comprising:

The terminal device receives the first message sent by the network device, where the first message includes a first parameter, where the first parameter is a cell selection criterion parameter related to coverage enhancement.
The method according to claim 1, wherein the first parameter is a cell selection criterion parameter for the auxiliary uplink SUL and/or a cell selection criterion parameter for the normal uplink NUL.
The method according to claim 2, wherein the cell selection criterion parameters for SUL include at least one of the following parameters:

The first criterion parameter is the minimum required reception level in the cell after coverage enhancement;

The second criterion parameter is the minimum required quality level in the cell after coverage enhancement;

The third criterion parameter is the offset of the minimum required receiving level in the cell after coverage enhancement;

The fourth criterion parameter is the offset of the minimum required quality level in the cell after coverage enhancement;

The fifth criterion parameter is the offset temporarily applied to the cell after coverage enhancement;

The sixth criterion parameter is power compensation after coverage enhancement, and the power compensation is the larger value between the difference between the maximum transmit power value and the maximum radio frequency output power value of the terminal device and 0; and/or

The cell selection criterion parameters for NUL include at least one of the following parameters:

The seventh criterion parameter is the minimum required receiving level in the cell after coverage enhancement;

The eighth criterion parameter is the minimum required quality level in the cell after coverage enhancement;

The ninth criterion parameter is the offset of the minimum required reception level in the cell after coverage enhancement;

The tenth criterion parameter is the offset of the minimum required quality level in the cell after coverage enhancement;

The eleventh criterion parameter is the offset temporarily applied to the cell after coverage enhancement;

The twelfth criterion parameter is power compensation after coverage enhancement, and the power compensation is the greater value between the difference between the maximum transmit power value and the maximum radio frequency output power value of the terminal equipment and 0.
The method according to claim 2 or 3, characterized in that the method further comprises:

If the terminal device supports SUL, the terminal device obtains the cell selection criterion parameter for SUL from the first message; or

If the terminal device does not support SUL, the terminal device obtains the cell selection criterion parameter for NUL from the first message.
The method according to any one of claims 1-4, wherein the first message is a system information block message.
The method according to claim 5, wherein, for different cell types, the first message is carried in different system information blocks.
The method according to claim 6, wherein the cell type includes a serving cell, a same-frequency adjacent cell, and/or a different-frequency adjacent cell;

If the first parameter is a cell selection criterion parameter for a serving cell, the first message is a system information block SIB1 message; or,

If the first parameter is a cell selection criterion parameter for co-frequency adjacent cells, the first message is a SIB2 message; or,

If the first parameter is a cell selection criterion parameter for inter-frequency neighboring cells, the first message is a SIB4 message.
The method according to claim 1, wherein the first parameter is a cell-specific offset for one or more neighboring cells.
The method according to claim 8, wherein the cell-specific offset is a cell-specific offset shared by NUL and SUL.
The method according to claim 9, characterized in that the method further comprises:

The terminal device superimposes the cell selection criterion parameter for the one or more neighboring cells and the cell-specific offset to obtain the cell selection criterion parameter for the one or more neighboring cells.
The method according to claim 8, wherein the cell-specific offset is a first offset for SUL and/or a second offset for NUL.
The method according to claim 11, characterized in that the method further comprises:

If the terminal device supports SUL, the terminal device superimposes the cell selection criterion parameters for the one or more neighboring cells and the first offset to obtain the cells for the one or more neighboring cells selection criteria parameters; or

If the terminal device does not support SUL, the terminal device superimposes the cell selection criterion parameters for the one or more neighboring cells and the second offset to obtain the cell selection criteria for the one or more neighboring cells Cell selection criterion parameter.
The method according to any one of claims 8-12, wherein the first parameter is a cell-specific offset for adjacent cells of the same frequency; or, the first parameter is for adjacent cells of different frequency The cell-specific offset of ;

If the first parameter is the cell-specific offset for the same-frequency neighboring cell, the first message is a SIB3 message; or,

If the first parameter is the cell-specific offset for inter-frequency neighboring cells, the first message is a SIB4 message.
The method according to any one of claims 1-13, characterized in that the cell selection criterion parameters include a minimum required reception level in a cell and/or a minimum required quality level in a cell.
A method for wireless communication, comprising:

The network device sends a first message to the terminal device, where the first message includes a first parameter, where the first parameter is a cell selection criterion parameter related to coverage enhancement.
The method according to claim 15, wherein the first parameter is a cell selection criterion parameter for the auxiliary uplink SUL and/or a cell selection criterion parameter for the normal uplink NUL.
The method according to claim 16, wherein the cell selection criterion parameters for SUL include at least one of the following parameters:

The first criterion parameter is the minimum required reception level in the cell;

The second criterion parameter is the minimum required quality level in the cell;

The third criterion parameter is an offset of the minimum required reception level in the cell;

The fourth criterion parameter is the offset of the minimum required quality level in the cell;

The fifth criterion parameter is an offset temporarily applied to the cell;

The sixth criterion parameter is power compensation, and the power compensation is the greater value of the difference between the maximum transmit power value and the maximum radio frequency output power value of the terminal device and 0; and/or

The cell selection criterion parameters for NUL include at least one of the following parameters:

The seventh criterion parameter is the minimum required reception level in the cell;

The eighth criterion parameter is the minimum required quality level in the cell;

The ninth criterion parameter is the offset of the minimum required reception level in the cell;

The tenth criterion parameter is the offset of the minimum required quality level in the cell;

The eleventh criterion parameter is an offset temporarily applied to the cell;

The twelfth criterion parameter is power compensation, and the power compensation is the larger value between the difference between the maximum transmit power value and the maximum radio frequency output power value of the terminal device and 0.
The method according to any one of claims 15-17, wherein the first message is a system information block message.
The method according to claim 18, characterized in that, for different cell types, the first message is carried in different system information blocks.
The method according to claim 19, wherein the cell type includes a serving cell, a same-frequency adjacent cell, and/or a different-frequency adjacent cell;

If the first parameter is a cell selection criterion parameter for a serving cell, the first message is a system information block SIB1 message; or,

If the first parameter is a cell selection criterion parameter for co-frequency adjacent cells, the first message is a SIB2 message; or,

If the first parameter is a cell selection criterion parameter for inter-frequency neighboring cells, the first message is a SIB4 message.
The method according to claim 15, wherein the first parameter is a cell-specific offset for one or more neighboring cells.
The method according to claim 21, wherein the cell-specific offset is a cell-specific offset shared by NUL and SUL.
The method according to claim 21, wherein the cell-specific offset is a first offset for SUL and/or a second offset for NUL.
The method according to any one of claims 21-23, wherein the first parameter is a cell-specific offset for adjacent cells of the same frequency; or, the first parameter is for adjacent cells of different frequency The cell-specific offset of ;

If the first parameter is the cell-specific offset for the same-frequency neighboring cell, the first message is a SIB3 message; or,

If the first parameter is the cell-specific offset for inter-frequency neighboring cells, the first message is a SIB4 message.
The method according to any one of claims 15-24, characterized in that the cell selection criterion parameters include a minimum required reception level in a cell and/or a minimum required quality level in a cell.
A terminal device, characterized in that it includes:

The receiving unit is configured to receive a first message sent by a network device, where the first message includes a first parameter, and the first parameter is a cell selection criterion parameter related to coverage enhancement.
The terminal device according to claim 26, wherein the first parameter is a cell selection criterion parameter for the auxiliary uplink SUL and/or a cell selection criterion parameter for the normal uplink NUL.
The terminal device according to claim 27, wherein the cell selection criterion parameters for SUL include at least one of the following parameters:

The first criterion parameter is the minimum required reception level in the cell;

The second criterion parameter is the minimum required quality level in the cell;

The third criterion parameter is an offset of the minimum required reception level in the cell;

The fourth criterion parameter is the offset of the minimum required quality level in the cell;

The fifth criterion parameter is an offset temporarily applied to the cell;

The sixth criterion parameter is power compensation, and the power compensation is the greater value of the difference between the maximum transmit power value and the maximum radio frequency output power value of the terminal device and 0; and/or

The cell selection criterion parameters for NUL include at least one of the following parameters:

The seventh criterion parameter is the minimum required reception level in the cell;

The eighth criterion parameter is the minimum required quality level in the cell;

The ninth criterion parameter is the offset of the minimum required reception level in the cell;

The tenth criterion parameter is the offset of the minimum required quality level in the cell;

The eleventh criterion parameter is an offset temporarily applied to the cell;

The twelfth criterion parameter is power compensation, and the power compensation is the larger value between the difference between the maximum transmit power value and the maximum radio frequency output power value of the terminal device and 0.
The terminal device according to claim 27 or 28, wherein the terminal device further comprises:

A first obtaining unit, configured to obtain the cell selection criterion parameter for SUL from the first message if the terminal device supports SUL; or

The second obtaining unit is configured to obtain the cell selection criterion parameter for NUL from the first message if the terminal device does not support SUL.
The terminal device according to any one of claims 26-29, wherein the first message is a system information block message.
The terminal device according to claim 30, wherein, for different cell types, the first message is carried in different system information blocks.
The terminal device according to claim 31, wherein the cell type includes a serving cell, a same-frequency neighboring cell, and/or a different-frequency neighboring cell;

If the first parameter is a cell selection criterion parameter for a serving cell, the first message is a system information block SIB1 message; or,

If the first parameter is a cell selection criterion parameter for co-frequency adjacent cells, the first message is a SIB2 message; or,

If the first parameter is a cell selection criterion parameter for inter-frequency neighboring cells, the first message is a SIB4 message.
The terminal device according to claim 26, wherein the first parameter is a cell-specific offset for one or more neighboring cells.
The terminal device according to claim 33, wherein the cell-specific offset is a cell-specific offset shared by NUL and SUL.
The terminal device according to claim 34, wherein the terminal device further comprises:

The first superposition unit is configured to superimpose the cell selection criterion parameters for the one or more neighboring cells and the cell-specific offset to obtain the cell selection criterion parameters for the one or more neighboring cells.
The terminal device according to claim 33, wherein the cell-specific offset is a first offset for SUL and/or a second offset for NUL.
The terminal device according to claim 36, wherein the terminal device further comprises:

The second superposition unit is configured to superimpose the cell selection criterion parameters for the one or more neighboring cells and the first offset if the terminal device supports SUL, to obtain the first offset for the one or more neighboring cells The cell selection criterion parameter of the cell; or, if the terminal device does not support SUL, the cell selection criterion parameter for the one or more neighboring cells and the second offset are superimposed to obtain the Cell selection criterion parameters for multiple neighboring cells.
The terminal device according to any one of claims 33-37, wherein the first parameter is a cell-specific offset for same-frequency adjacent cells; or, the first parameter is a cell-specific offset for inter-frequency adjacent cells. the cell specific offset of the cell;

If the first parameter is the cell-specific offset for the same-frequency neighboring cell, the first message is a SIB3 message; or,

If the first parameter is the cell-specific offset for inter-frequency neighboring cells, the first message is a SIB4 message.
The terminal device according to any one of claims 26-38, wherein the cell selection criterion parameter includes a minimum required reception level in a cell and/or a minimum required quality level in a cell.
A network device, characterized in that it includes:

A sending unit, configured to send a first message to the terminal device, where the first message includes a first parameter, and the first parameter is a cell selection criterion parameter related to coverage enhancement.
The network device according to claim 40, wherein the first parameter is a cell selection criterion parameter for the auxiliary uplink SUL and/or a cell selection criterion parameter for the normal uplink NUL.
The network device according to claim 41, wherein the cell selection criterion parameters for SUL include at least one of the following parameters:

The first criterion parameter is the minimum required reception level in the cell;

The second criterion parameter is the minimum required quality level in the cell;

The third criterion parameter is an offset of the minimum required reception level in the cell;

The fourth criterion parameter is the offset of the minimum required quality level in the cell;

The fifth criterion parameter is an offset temporarily applied to the cell;

The sixth criterion parameter is power compensation, and the power compensation is the greater value of the difference between the maximum transmit power value and the maximum radio frequency output power value of the terminal device and 0; and/or

The cell selection criterion parameters for NUL include at least one of the following parameters:

The seventh criterion parameter is the minimum required reception level in the cell;

The eighth criterion parameter is the minimum required quality level in the cell;

The ninth criterion parameter is the offset of the minimum required reception level in the cell;

The tenth criterion parameter is the offset of the minimum required quality level in the cell;

The eleventh criterion parameter is an offset temporarily applied to the cell;

The twelfth criterion parameter is power compensation, and the power compensation is the larger value between the difference between the maximum transmit power value and the maximum radio frequency output power value of the terminal device and 0.
The network device according to any one of claims 40-42, wherein the first message is a system information block message.
The network device according to claim 43, wherein, for different cell types, the first message is carried in different system information blocks.
The network device according to claim 44, wherein the cell type includes a serving cell, a same-frequency adjacent cell, and/or a different-frequency adjacent cell;

If the first parameter is a cell selection criterion parameter for a serving cell, the first message is a system information block SIB1 message; or,

If the first parameter is a cell selection criterion parameter for co-frequency adjacent cells, the first message is a SIB2 message; or,

If the first parameter is a cell selection criterion parameter for inter-frequency neighboring cells, the first message is a SIB4 message.
The network device according to claim 40, wherein the first parameter is a cell-specific offset for one or more neighboring cells.
The network device according to claim 46, wherein the cell-specific offset is a cell-specific offset shared by NUL and SUL.
The network device according to claim 46, wherein the cell-specific offset is a first offset for SUL and/or a second offset for NUL.
The network device according to any one of claims 46-48, wherein the first parameter is a cell-specific offset for same-frequency adjacent cells; or, the first parameter is a cell-specific offset for inter-frequency adjacent cells. the cell specific offset of the cell;

If the first parameter is the cell-specific offset for the same-frequency neighboring cell, the first message is a SIB3 message; or,

If the first parameter is the cell-specific offset for inter-frequency neighboring cells, the first message is a SIB4 message.
The network device according to any one of claims 40-49, wherein the cell selection criterion parameter includes a minimum required reception level in a cell and/or a minimum required quality level in a cell.
A terminal device, characterized in that it includes a memory and a processor, the memory is used to store a program, and the processor is used to call the program in the memory to execute the program described in any one of claims 1-14 Methods.
A network device, characterized in that it includes a memory and a processor, the memory is used to store programs, and the processor is used to call the programs in the memory to execute any one of claims 15-25 Methods.
An apparatus, characterized by comprising a processor, configured to call a program from a memory to execute the method according to any one of claims 1-14.
An apparatus, characterized by comprising a processor, configured to call a program from a memory to execute the method according to any one of claims 15-25.
A chip, characterized by comprising a processor, configured to call a program from a memory, so that a device installed with the chip executes the method according to any one of claims 1-14.
A chip, characterized by comprising a processor, configured to call a program from a memory, so that a device installed with the chip executes the method according to any one of claims 15-25.
A computer-readable storage medium, characterized in that a program is stored thereon, the program causes a computer to execute the method according to any one of claims 1-14.
A computer-readable storage medium, which is characterized in that a program is stored thereon, and the program causes a computer to execute the method according to any one of claims 15-25.
A computer program product, characterized by comprising a program, the program causes a computer to execute the method according to any one of claims 1-14.
A computer program product, characterized by comprising a program, the program causing a computer to execute the method according to any one of claims 15-25.
A computer program, characterized in that the computer program causes a computer to execute the method according to any one of claims 1-14.
A computer program, characterized in that the computer program causes a computer to execute the method according to any one of claims 15-25.