CN117643154A

CN117643154A - Transmission method based on enhanced uplink coverage, threshold configuration method and device

Info

Publication number: CN117643154A
Application number: CN202180100661.XA
Authority: CN
Inventors: 李海涛
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2024-03-01
Also published as: WO2023077313A1

Abstract

The application discloses a transmission method based on enhanced uplink coverage, a threshold configuration method and a threshold configuration device, and relates to the field of mobile communication. The method comprises the following steps: selecting one of a normal uplink carrier NUL and a supplementary uplink carrier SUL as a target uplink carrier (302) based on enhanced uplink coverage transmission using at least one target selection threshold; the target selection threshold is configured for terminal equipment supporting SUL and enhancing uplink coverage. By configuring the target selection threshold for the terminal device, it is possible to configure a separate request threshold for the terminal device supporting enhanced uplink coverage, so that the terminal device selects an uplink carrier. Therefore, the terminal equipment supporting the enhanced uplink coverage can be ensured to select to be on NUL for transmission based on the enhanced uplink coverage, and the purpose of load balancing is achieved.

Description

Transmission method based on enhanced uplink coverage, threshold configuration method and device

Technical Field

The present invention relates to the field of mobile communications, and in particular, to a transmission method based on enhanced uplink coverage, a threshold configuration method, and an apparatus.

Background

The frequency points of the frequency band used by the fifth generation mobile communication technology (5th Generation Mobile Communication Technology,5G) system are relatively high, such as millimeter waves and the like. The higher the frequency band, the greater the signal transmission loss. This results in limited uplink coverage for the terminal device, since the transmit power of the terminal device is limited. Thus, the 5G system introduces a supplementary uplink carrier (Supplementary Uplink, SUL). SULs are typically in a lower frequency band, such as the long term evolution (Long Term Evolution, LTE) frequency band, than Normal Uplink (NUL). Uplink coverage limitation of the terminal equipment can be avoided through the SUL.

In the related art, a terminal device can select an uplink carrier explicitly indicated by a network device to perform uplink transmission according to an indication of the network device. The terminal device can also select an uplink carrier used by the terminal device according to a size relationship between the signal quality of the serving cell and a selection threshold broadcasted by the network device. For different terminal devices, the network device will broadcast the same selection threshold, so that the terminal device selects the uplink carrier used by the terminal device.

There is a difference in the capability of uplink coverage supported by different terminal devices. Further discussion of the setting of the selection threshold is required.

Disclosure of Invention

The embodiment of the application provides a transmission method based on enhanced uplink coverage, a threshold configuration method and a threshold configuration device. The technical scheme is as follows:

according to an aspect of the present application, there is provided a transmission method based on enhanced uplink coverage, applied to a terminal device, the method including:

selecting one uplink carrier of the NUL and the SUL as a target uplink carrier based on the enhanced uplink coverage transmission using at least one target selection threshold;

the target selection threshold is configured for a terminal device supporting the SUL and the enhanced uplink coverage.

According to another aspect of the present application, there is provided a method for configuring a threshold, applied to a core network device, the method including:

configuring at least one target selection threshold to the terminal equipment;

the target selection threshold is configured for a terminal device supporting the SUL and enhanced uplink coverage, and is used for the terminal device to select one uplink carrier of the NUL and the SUL as a target uplink carrier based on transmission of the enhanced uplink coverage.

According to another aspect of the present application, there is provided a transmission apparatus based on enhanced uplink coverage, the apparatus including:

A selecting module, configured to select, using at least one target selection threshold, one uplink carrier of NUL and SUL as a target uplink carrier based on the transmission of the enhanced uplink coverage;

According to another aspect of the present application, there is provided a threshold configuration apparatus, including:

a sending module, configured to configure at least one target selection threshold to a terminal device;

According to another aspect of the present application, there is provided a terminal including: a processor; a transceiver coupled to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the enhanced uplink coverage based transmission method as described in the above aspect.

According to another aspect of the present application, there is provided a network device comprising: a processor; a transceiver coupled to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the method of configuring a threshold as described in the above aspects.

According to another aspect of the present application, there is provided a computer readable storage medium having stored therein executable instructions that are loaded and executed by the processor to implement the transmission method or threshold configuration method based on enhanced uplink coverage as described in the above aspect.

According to another aspect of the present application, there is provided a chip comprising programmable logic circuits and/or program instructions for implementing the transmission method or the threshold configuration method based on enhanced uplink coverage according to the above aspect when the chip is run on a computer device.

According to another aspect of the present application, there is provided a computer program product or computer program comprising computer instructions stored in a computer readable storage medium, the computer instructions being read from the computer readable storage medium and executed by a processor to cause a computer device to perform the enhanced uplink coverage based transmission method or threshold based configuration method of the above aspects.

The technical scheme provided by the application at least comprises the following beneficial effects:

by configuring the target selection threshold for the terminal device, it is possible to configure a separate request threshold for the terminal device supporting enhanced uplink coverage, so that the terminal device selects an uplink carrier. Therefore, the terminal equipment supporting the enhanced uplink coverage can be ensured to select to be on NUL for transmission based on the enhanced uplink coverage, and the purpose of load balancing is achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a system architecture of a communication system provided in one exemplary embodiment of the present application;

FIG. 2 is a schematic diagram of a process for requesting enhanced uplink coverage provided by an exemplary embodiment of the present application;

fig. 3 is a flowchart of a transmission method based on enhanced uplink coverage according to an exemplary embodiment of the present application;

FIG. 4 is a flow chart of a method of configuring thresholds provided by an exemplary embodiment of the present application;

fig. 5 is a flowchart of a transmission method based on enhanced uplink coverage according to an exemplary embodiment of the present application;

FIG. 6 is a schematic illustration of coverage provided by an exemplary embodiment of the present application;

fig. 7 is a flowchart of a transmission method based on enhanced uplink coverage according to an exemplary embodiment of the present application;

fig. 8 is a flowchart of a transmission method based on enhanced uplink coverage according to an exemplary embodiment of the present application;

fig. 9 is a block diagram of a transmission apparatus based on enhanced uplink coverage according to an exemplary embodiment of the present application;

FIG. 10 is a block diagram of a threshold configuration apparatus provided in an exemplary embodiment of the present application;

fig. 11 is a schematic structural diagram of a communication device according to an exemplary embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.

First, description is made of a related art background related to an embodiment of the present application:

the radio resource control state is described:

With the continuous increase in the pursuit of speed, delay, high-speed mobility, energy efficiency of mobile communication networks, and the diversity and complexity of future life services, the third generation partnership project (3rd Generation Partnership Project,3GPP) international standards organization has opened up the development of 5G. The main application scenarios of 5G include: enhanced mobile broadband (Enhanced Mobile Broadband, emmbb), low latency high reliability communications (Ultra Reliable Low Latency Communications, URLLC), and large scale machine communications (massive Machine Type of Communication, mctc).

The New air interface (NR) can be deployed independently. In a 5G network environment, for the purposes of reducing air interface signaling, quickly restoring a radio connection, and quickly restoring data traffic, a new radio resource control (Radio Resource Control, RRC) state, specifically, an RRC INACTIVE (rrc_inactive) state, is defined, which is different from an RRC IDLE (rrc_idle) state and an RRC ACTIVE (rrc_active) state. Wherein each RRC state can reflect one network connection state and describes how network devices and terminals handle terminal mobility, paging messages, and system information broadcasting.

Rrc_idle: mobility in the rrc_idle state refers to terminal-based cell selection reselection. Paging is initiated by a Core Network (CN) device and the paging area is configured by the CN device. The base station does not have an Access Stratum (AS) context. There is no RRC connection.

Rrc_connected: in the rrc_idle state, there is an RRC connection, and the base station and the terminal have a terminal AS context. The location of the terminal as determined by the network device is cell level. Mobility refers to mobility controlled by a network device. Unicast data may be transmitted between the terminal and the base station.

Rrc_inactive: mobility in the rrc_idle state refers to a terminal-based cell selection reselection, there is a connection between CN and NR, terminal AS context exists on a certain base station, paging is triggered by the radio access network (Random Access Network, RAN), RAN-based paging area is managed by the RAN, and the location of the terminal AS determined by the network device is based on the paging area level of the RAN.

Introduction of supplemental uplink carriers:

the supplemental uplink carrier may also be referred to as a supplemental uplink. In general, a Cell (Cell) generally includes an Uplink Carrier (Uplink Carrier) and a Downlink Carrier (Downlink Carrier), which are in the same Frequency Band (Frequency Band). Since the terminal device has limited transmit power compared to the network device and the frequency of the spectrum used by the NR is higher (the higher the frequency the higher the losses in the propagation process), the uplink coverage of the terminal device may be limited. SULs have been introduced in NR systems in order to improve the uplink coverage of the NR high frequency band. The implementation of the SUL enables the use of the LTE spectrum (with a relatively low frequency) as the uplink for the NR system, so that the uplink coverage of the terminal device can be improved.

Two uplink carriers and one downlink carrier belong to the same cell, and at most, only one physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) based on one uplink carrier exists for transmission at the same time. Unless the network device explicitly indicates which uplink carrier the terminal device uses, the terminal device selects the uplink carrier it uses according to the magnitude relation of the selection threshold and the signal quality of the serving cell. The selection threshold is configured by a system broadcast of the network device. The selection threshold does not take into account the situation where the terminal device supports enhanced uplink coverage. The terminal device is able to dynamically switch between two uplink carriers, and the network device indicates via downlink control information (Downlink Control Information, DCI).

Terminal devices in IDLE (IDLE) and INACTIVE (INACTIVE) states can select NUL (also called uplink carrier, NL) or SUL for initial access according to the magnitude relation between the signal quality of the serving cell and the above mentioned selection threshold. Specifically, the terminal device can obtain a configured selection gating according to a system information block (System Information Block, SIB), wherein the selection gating is rsrp-threshold ssb-SUL configured in the SIB. If the serving cell signal quality measurement is less than the selected value, the terminal device will select SUL, otherwise the terminal device will select NUL.

Introduction of enhanced uplink coverage for NR:

coverage of a mobile communication network is one of the main network capabilities of interest to operators. Compared to LTE, 5G operates in a higher frequency band. For example: for Frequency range 1 (Frequency Rang 1, FR 1), the operating band is 3.5GHz; for Frequency range 2 (Frequency range Rang 2, FR 2), the operating Frequency band may be as high as 28GHz or 39GHz. The higher the operating frequency band, the greater the path loss experienced by the signal, resulting in reduced network coverage. The transmission power of the network device is usually much larger than that of the terminal device, so that the uplink coverage of the network suffers from more serious coverage limitation. The current standardized uplink coverage enhancement in NR, one aspect is to introduce a mechanism of repeated (retransmission) transmission for the physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) transmission of Message 3 (Msg 3) in the random access procedure, so as to achieve the purpose of enhancing Msg3 coverage. The terminal device can determine whether to perform retransmission according to the downlink coverage, for example, when the measured value of the reference signal received power (Reference Signal Receiving Power, RSRP) is lower than a preset threshold, the terminal device may request PUSCH retransmission of Msg3 through Message 1 (Message 1, msg 1). After receiving the specific Msg1, the network device may allocate enhanced Msg3 resources for retransmission to the terminal device in Message 2 (Message 2, msg 2) through Uplink scheduling (UL grant) in a random access response (Random Access Response, RAR).

In the related art, the terminal device in the NR network does not consider the case of enhancing uplink coverage when selecting the SUL or NUL. In the case where the terminal device supports enhanced uplink coverage, since the repeated transmission of Msg3 can use NUL or SUL, the coverage of NUL and SUL can be further expanded. For terminal devices supporting enhanced uplink coverage, if the conventional above selection threshold is still used, the terminal device may not select an enhanced uplink coverage area of NUL. And the terminal device selects to the SUL, which may cause congestion on the SUL.

Fig. 1 is a schematic diagram of a system architecture of a communication system according to an embodiment of the present application. The system architecture may include: terminal device 10, access network device 20, and core network device 30.

The terminal device 10 may refer to a UE (User Equipment), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a wireless communication device, a User agent, or a User Equipment. Alternatively, the terminal device may also be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol ) phone, a WLL (Wireless Local Loop, wireless local loop) station, a PDA (Personal digital Assistant), a handheld device with a wireless communication function, a computing device, or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in 5GS (5 th Generation System, fifth generation mobile communication system), or a terminal device in a future evolved PLMN (Pub 1ic Land Mobi1e Network), or the like, to which the embodiment of the present application is not limited. For convenience of description, the above-mentioned devices are collectively referred to as terminal devices. The number of terminal devices 10 is typically plural, and one or more terminal devices 10 may be distributed within a cell managed by each access network device 20.

The access network device 20 is a device deployed in the access network to provide wireless communication functionality for the terminal device 10. The access network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. The names of access network device-capable devices may vary in systems employing different radio access technologies, for example in 5G NR systems, called gndeb or gNB. As communication technology evolves, the name "access network device" may change. For convenience of description, in the embodiment of the present application, the above-mentioned devices for providing the terminal device 10 with the wireless communication function are collectively referred to as an access network device. Alternatively, a communication relationship may be established between the terminal device 10 and the core network device 30 via the access network device 20. Illustratively, in an LTE system, the access network device 20 may be EUTRAN (Evolved Universal Terrestrial Radio Access Network, evolved universal terrestrial radio network) or one or more enodebs in EUTRAN; in a 5G NR system, access network device 20 may be a RAN or one or more gnbs in a RAN.

The core network device 30 mainly functions to provide user connection, management of users, and bearer completion of services, and to provide an interface to an external network as a bearer network. For example, core network devices in the 5G NR system may include AMF (Access and Mobility Management Function ) entities, UPF (User Plane Function, user plane function) entities, SMF (Session Management Function ) entities, and the like. The access network device 20 and the core network device 30 may be collectively referred to as network devices.

In one example, access network device 20 and core network device 30 communicate with each other over some air technology, such as the NG interface in a 5G NR system. The access network device 20 and the terminal device 10 communicate with each other via some over-the-air technology, e.g. the Uu interface.

Taking the method provided by the embodiment of the application as an example for the communication system shown in fig. 1, the method provided by the embodiment of the application is described in its entirety. Fig. 2 is a schematic diagram of a procedure for requesting enhanced uplink coverage provided in an exemplary embodiment of the present application. As shown in fig. 2, in step S1, the terminal device receives a system message broadcast by the network device, and obtains a selection threshold configured by the network device by reading the system message. Optionally, the core network device configures the selection threshold and broadcasts to the terminal device through the access network device. The selection threshold comprises at least one target selection threshold and a second selection threshold. The target selection threshold is configured for terminal equipment supporting SUL and enhancing uplink coverage. The second selection threshold is configured for terminal devices supporting the SUL but not supporting enhanced uplink coverage. Enhancing uplink coverage refers to repeated transmissions of message 3. Optionally, the terminal device is further capable of receiving a plurality of selection thresholds and selecting at least one target selection threshold from the plurality of selection thresholds. In step S2, the terminal device triggers a random access procedure. In step S3, the terminal device determines a specific procedure for random access based on its own supported device capabilities. The device capabilities include whether SUL is supported or whether enhanced uplink coverage is supported.

Under the condition that the terminal equipment supports SUL and supports enhanced uplink coverage, the terminal equipment can firstly select uplink carrier waves and then judge whether to request transmission based on the enhanced uplink coverage. Specifically, in step S4, the terminal device determines whether the signal quality of the serving cell is less than the target selection threshold. In step S41, the terminal device selects the SUL in case the signal quality of the serving cell is smaller than the target selection threshold. In step S42, the terminal device determines whether to use the SUL to request transmission based on enhanced uplink coverage based on the magnitude relation between the first request threshold configured on the SUL and the signal quality of the serving cell. In step S43, the terminal device selects NUL in case the signal quality of the serving cell is not less than the target selection threshold. In step S44, the terminal device determines whether to use NUL to request transmission based on enhanced uplink coverage based on the magnitude relation between the second request threshold configured on NUL and the signal quality of the serving cell.

In the case that the terminal device supports SUL but does not support enhanced uplink coverage, in step S5, the terminal device determines whether the signal quality of the serving cell is less than a second selection threshold. In step S51, in the case that the signal quality of the serving cell is smaller than the second selection threshold, the terminal device selects the SUL, and then uses the SUL to perform transmission based on normal uplink coverage. In step S52, if the signal quality of the serving cell is not less than the second selection threshold, the terminal device selects NUL, and then uses NUL for transmission based on normal uplink coverage.

In the case that the terminal device supports SUL and supports enhanced uplink coverage, the terminal device can also determine whether to request transmission based on enhanced uplink coverage first, and then select an uplink carrier. Specifically, in step S61, the terminal device determines whether to request transmission based on enhanced uplink coverage based on the magnitude relation between the second request threshold and the signal quality of the serving cell. In step S62, after selecting the uplink carrier, the terminal device selects the uplink carrier from NUL and SUL based on the magnitude relation between the target selection threshold and the signal quality of the serving cell, and uses the selected uplink carrier to request transmission based on enhanced uplink coverage.

It should be noted that, the transmission based on enhanced uplink coverage refers to at least one of repeated transmission of the message 3 in the random access process and repeated transmission of the request message 3 based on the message 1 in the random access process. The network device will indicate the result of the terminal device request by message 2. The core network device also configures a first request threshold and a second request threshold for the terminal device, and broadcasts the first request threshold and the second request threshold to the terminal device through the access network device. Wherein the first request threshold is configured for SUL and the second request threshold is configured for NUL. The at least one target selection threshold can comprise one or more selection thresholds, for example for which the core network device configures one target selection threshold for different parameters reflecting signal quality. In the process that the signal quality of the serving cell is judged to be smaller than the target selection threshold or not, the terminal equipment determines that the signal quality of the serving cell is smaller than the target selection threshold under the condition that the signal quality of one serving cell is smaller than the corresponding selection threshold in at least one target selection threshold or the signal quality of each serving cell is smaller than the corresponding selection threshold in at least one target selection threshold. Optionally, the signal quality of the serving cell comprises at least one of RSRP of the serving cell, reference signal received quality (Reference Signal Receiving Quality, RSRQ) of the serving cell, signal-to-interference-and-noise ratio (Signal to Interference plus Noise Ratio, SINR) of the serving cell, received signal code power (Received Signal Code Power, RSCP) of the serving cell, and a ratio of chip energy and total interference energy density (Ec/No) of the serving cell.

Under the condition of introducing enhanced uplink coverage, by configuring a target selection threshold for the terminal equipment, the terminal equipment can be configured with a separate request threshold for supporting the enhanced uplink coverage, so that the terminal equipment can select uplink carriers. Therefore, the terminal equipment supporting the enhanced uplink coverage can be ensured to select to be on NUL for transmission based on the enhanced uplink coverage, and the purpose of load balancing is achieved. In addition, whether transmission based on enhanced uplink coverage is carried out or not is preferentially judged, and uplink carriers are selected, so that the enhanced uplink coverage is utilized to the greatest extent to compensate NUL coverage, SUL usage is reduced, and the situation that SUL is congested is avoided.

Fig. 3 shows a flowchart of a transmission method based on enhanced uplink coverage according to an embodiment of the present application. Fig. 3 illustrates a terminal device in which the method is applied to the communication system shown in fig. 1. The method comprises the following steps:

step 302: one of the NUL and SUL is selected as a target uplink carrier based on enhanced uplink coverage transmissions using at least one target selection threshold.

The at least one target selection threshold is configured by the core network device for the terminal device supporting the SUL and enhancing the uplink coverage via the access network device based on the broadcasted system message. Optionally, the core network device is further capable of configuring the at least one target selection threshold for the terminal device by the access network device based on a multiple access channel control element (Multiple Access Channel Control Element, MAC CE) message, an RRC message, etc.

Optionally, the core network device is further capable of configuring a plurality of selection thresholds for the terminal device, the plurality of selection thresholds being configured for the terminal device supporting the SUL and enhancing uplink coverage. The terminal device selects the at least one target selection threshold from a plurality of selection thresholds. Optionally, the plurality of selection thresholds includes: a plurality of selection thresholds corresponding to RSRP, RSRQ, SINR, RSCP, and Ec/No.

The terminal device is capable of selecting at least one target selection threshold indicated by the network device from a plurality of selection thresholds, illustratively according to an indication of the network device. Or the terminal equipment selects at least one target selection threshold from a plurality of selection thresholds according to the type of the parameter which reflects the signal quality of the serving cell and is measured by the terminal equipment. For example, the terminal device measures RSRP and RSRQ of the serving cell to measure signal quality of the serving cell, and then selects a selection threshold corresponding to RSRP and a selection threshold corresponding to RSRQ from a plurality of selection thresholds. Optionally, the signal quality of the serving cell includes at least one of RSRP of the serving cell, RSRQ of the serving cell, SINR of the serving cell, RSCP of the serving cell, and Ec/No of the serving cell.

The core network device may also configure a second selection threshold configured for a terminal device supporting the SUL but not supporting enhanced uplink coverage. Supporting enhanced uplink coverage refers to supporting repeated transmission of message 3.

The at least one target selection threshold can comprise one or more selection thresholds, e.g. the at least one target selection threshold comprises at least one of:

a selection threshold corresponding to RSRP;

a selection threshold corresponding to RSRQ;

a selection threshold corresponding to SINR;

a selection threshold corresponding to RSCP;

a selection threshold corresponding to Ec/No.

Optionally, the terminal device may select the SUL in case the signal quality of the serving cell of the terminal device is smaller than the target selection threshold. In the case that the signal quality of the serving cell of the terminal device is not less than the target selection threshold, the terminal device selects NUL. The terminal device supports SUL and enhances uplink coverage.

Illustratively, in case the at least one target selection threshold comprises a selection threshold, the at least one target selection threshold is an RSRP-threshold ssb-SUL-CE configured for the case of measuring the signal quality of the cell using RSRP. The second selection threshold can be rsrp-threshold SSB-SUL. And the terminal equipment performs the uplink carrier selection process according to the size relation between the RSRP-ThresholdSSB-SUL-CE and the RSRP of the serving cell.

In the case that the at least one target selection threshold comprises a plurality of selection thresholds, the terminal device determines that the signal quality of the serving cell is less than the target selection threshold if at least one or all of the following conditions are met:

the RSRP of the serving cell being smaller than the selection threshold corresponding to the RSRP of the at least one target selection threshold;

the RSRQ of the serving cell being smaller than a selection threshold corresponding to the RSRQ of the at least one target selection threshold;

the SINR of the serving cell being smaller than a selection threshold corresponding to the SINR of the at least one target selection threshold;

the RSCP of the serving cell is smaller than a selection threshold corresponding to the RSCP in at least one target selection threshold;

the Ec/No of the serving cell is smaller than the selection threshold corresponding to Ec/No of the at least one target selection threshold.

The transmission based on enhanced uplink coverage includes repeated transmission of the message 3 during random access. And requesting at least one of repeated transmissions of message 3 based on message 1 during the random access procedure. Optionally, after the terminal device selects the uplink carrier, the terminal device can also use the uplink carrier to perform transmission based on normal uplink coverage.

The terminal device can determine whether to perform enhanced uplink coverage based transmission before selecting the NUL and the SUL or whether to perform enhanced uplink coverage based transmission after selecting the NUL and the SUL.

In the case where the terminal device determines whether or not to perform enhanced uplink coverage based transmission before selecting the NUL and the SUL, after selecting the target uplink carrier in the NUL and the SUL. The terminal equipment judges whether to use the target uplink carrier for transmission based on enhanced uplink coverage according to the size relation between the request threshold corresponding to the target uplink carrier and the signal quality of the serving cell. The SUL corresponds to a first request threshold, the NUL corresponds to a second request threshold, and the first request threshold is different from the second request threshold. The first request threshold and the target selection threshold are different, and the second request threshold and the target selection threshold are different. For example, the first request threshold is greater than the target selection threshold and the second request threshold is less than the target selection threshold.

Alternatively, the first request threshold and the second request threshold can also each comprise a plurality of request thresholds, e.g. the first request threshold and the second request threshold also comprise request thresholds corresponding to different types of parameters measuring quality of service. Illustratively, the first request threshold includes at least one of a request threshold corresponding to RSRP, a request threshold corresponding to RSRQ, a request threshold corresponding to SINR, a request threshold corresponding to RSCP, and a request threshold corresponding to Ec/No. The first request threshold is larger than the target selection threshold, which means that the request threshold of the same type of parameters for measuring the service quality corresponding to the target selection threshold in the first request threshold is larger than the target selection threshold. For example, the request threshold of the corresponding RSRP in the first request threshold is greater than RSRP-threshold ssb-SUL-CE. The second request threshold is the same as the first request threshold. The type of the signal quality of the serving cell used by the terminal device in the process of selecting the uplink carrier is the same as or different from the type of the signal quality of the serving cell used in the process of judging whether to use the target uplink carrier for the transmission based on the enhanced uplink coverage.

Illustratively, where the at least one target selection Threshold is rsrp-Threshold-SUL-CE, the first request Threshold is rsrp-Threshold-SUL-CE and the second request Threshold is rsrp-Threshold-CE. The first request threshold and the second request threshold are configured by the core network device for the terminal device. The core network device broadcasts a system message to the terminal device through the access network device so as to configure the request threshold for the terminal device, wherein the system message comprises a first request threshold and a second request threshold.

Under the condition that the terminal equipment determines whether to perform transmission based on the enhanced uplink coverage before selecting the NUL and the SUL, the terminal equipment judges whether to perform transmission based on the enhanced uplink coverage according to the magnitude relation between the second request threshold and the signal of the service cell, and then selects carriers in the NUL and the SUL as target uplink carriers of the transmission based on the enhanced uplink coverage.

In addition, in the case that the terminal device supports the SUL but does not support the enhanced uplink coverage, the terminal device uses the second selection threshold to select an uplink carrier in the SUL and the NUL, and uses the selected uplink carrier to perform transmission based on the normal uplink coverage.

In summary, the method provided in this embodiment may be implemented to configure a separate request threshold for a terminal device supporting enhanced uplink coverage by configuring a target selection threshold for the terminal device, so that the terminal device selects an uplink carrier. Therefore, the terminal equipment supporting the enhanced uplink coverage can be ensured to select to be on NUL for transmission based on the enhanced uplink coverage, and the purpose of load balancing is achieved.

Fig. 4 is a flowchart of a method for configuring a threshold according to an embodiment of the present application. Fig. 4 illustrates a core network device in which the method is applied in the communication system shown in fig. 1. The method comprises the following steps:

step 402: at least one target selection threshold is configured to the terminal device.

The target selection threshold is configured for a terminal device supporting SUL and enhancing uplink coverage, and is used for the terminal device to select one uplink carrier in NUL and SUL as a target uplink carrier based on transmission of enhancing uplink coverage. Supporting enhanced uplink coverage refers to supporting repeated transmission of message 3. Optionally, the core network device configures at least one target selection threshold for the terminal device through a system message broadcasted by the access network device to the terminal device. The core network device can also configure at least one target selection threshold for the terminal device based on the MAC CE message, the RRC message, etc. through the access network device.

Optionally, the core network device may further configure a plurality of selection thresholds for the terminal device. The multiple selection thresholds are configured for terminal equipment supporting SUL and enhancing uplink coverage, and the multiple selection thresholds are used for the terminal equipment to select at least one target selection threshold.

Optionally, the core network device may further configure a second selection threshold to the terminal device. The second selection threshold is used for supporting the SUL but not supporting the terminal equipment for enhancing the uplink coverage, one uplink carrier in the NUL and the SUL is selected as a target uplink carrier based on the transmission of the normal uplink coverage, and the target selection threshold and the second selection threshold are different. Terminal devices that do not support enhanced uplink coverage may be referred to as legacy (legacy) terminal devices.

The at least one target selection threshold comprises a selection threshold or selection thresholds. The at least one target selection threshold comprises at least one of:

a selection threshold corresponding to RSRP;

a selection threshold corresponding to RSRQ;

a selection threshold corresponding to SINR;

a selection threshold corresponding to RSCP;

a selection threshold corresponding to Ec/No.

Optionally, in the case that the at least one target selection threshold includes a selection threshold, the at least one target selection threshold is rsrp-threshold ssb-SUL-CE, and the second selection threshold can be rsrp-threshold ssb-SUL.

The transmission based on enhanced uplink coverage includes repeated transmission of the message 3 during random access. And requesting at least one of repeated transmissions of message 3 based on message 1 during the random access procedure. Optionally, the terminal device may select the SUL in case the signal quality of the serving cell of the terminal device is smaller than the target selection threshold. In the case that the signal quality of the serving cell of the terminal device is not less than the target selection threshold, the terminal device selects NUL. The terminal device supports SUL and enhances uplink coverage.

The core network device can configure at least one target selection threshold to terminal devices supporting SUL and enhancing uplink coverage. The terminal device can select one uplink carrier of the NUL and the SUL according to the at least one target selection threshold as a target uplink carrier based on transmission of enhanced uplink coverage. And can also determine whether to conduct enhanced uplink coverage based transmissions. The method can be divided into a step of selecting an uplink carrier by the terminal equipment and a step of determining whether to transmit based on enhanced uplink coverage. And the terminal equipment firstly determines whether to carry out transmission based on the enhanced uplink coverage and then selects two conditions of uplink carrier waves. In addition, the core network device can also configure a second selection threshold for terminal devices that support SUL but do not support enhanced uplink coverage. And the terminal equipment can select one uplink carrier in the NUL and the SUL according to the second selection threshold to serve as a target uplink carrier based on the transmission of normal uplink coverage. The three cases described above are described below by three examples:

First kind: for the situation that the terminal equipment supports SUL and enhances uplink coverage, uplink carrier is selected first, and then whether transmission based on the enhanced uplink coverage is carried out or not is determined.

Fig. 5 shows a flowchart of a transmission method based on enhanced uplink coverage according to an embodiment of the present application. Fig. 5 illustrates the application of the method to the communication system shown in fig. 1. The method comprises the following steps:

step 502: the core network device configures at least one target selection threshold and a request threshold for the terminal device.

The at least one target selection threshold is configured for a terminal device supporting SUL and enhanced uplink coverage, and the at least one target selection threshold is used for the terminal device to select one uplink carrier in NUL and SUL as a target uplink carrier based on transmission of enhanced uplink coverage.

Optionally, the core network device is further capable of configuring a plurality of selection thresholds for the terminal device, the plurality of selection thresholds being configured for the terminal device supporting the SUL and enhancing uplink coverage. The terminal device selects the at least one target selection threshold from a plurality of selection thresholds. The plurality of selection thresholds includes: a plurality of selection thresholds corresponding to RSRP, RSRQ, SINR, RSCP, and Ec/No. Optionally, the core network device may further configure a second selection threshold to the terminal device. The second selection threshold is used for supporting the SUL but not supporting the terminal equipment for enhancing the uplink coverage, one uplink carrier in the NUL and the SUL is selected as a target uplink carrier based on the transmission of the normal uplink coverage, and the target selection threshold and the second selection threshold are different.

The request threshold is used for the terminal device to determine whether to perform enhanced uplink coverage based transmission on the target uplink carrier in the selected NUL and SUL. Optionally, the core network device configures a request threshold for the terminal device, and configures a first request threshold and a second request threshold for the terminal device. The first request threshold is configured for SUL and the second request threshold is configured for NUL, the first request threshold being different from the second request threshold. The first request threshold and the target selection threshold are different, and the second request threshold and the target selection threshold are different. For example, the first request threshold is greater than the target selection threshold and the second request threshold is less than the target selection threshold. Alternatively, the first request threshold and the second request threshold can each also comprise a plurality of request thresholds. Illustratively, the first request threshold includes at least one of a request threshold corresponding to RSRP, a request threshold corresponding to RSRQ, a request threshold corresponding to SINR, a request threshold corresponding to RSCP, and a request threshold corresponding to Ec/No. The first request threshold is larger than the target selection threshold, which means that the request threshold of the same type of parameters for measuring the service quality corresponding to the target selection threshold in the first request threshold is larger than the target selection threshold. The second request threshold is the same as the first request threshold.

Optionally, the core network device configures at least one target selection threshold and a request threshold to the terminal device through a system message broadcasted by the access network device. The core network device can also configure at least one target selection threshold for the terminal device based on the MAC CE message, the RRC message, etc. through the access network device. Optionally, the core network device configures at least one target selection threshold and the request threshold to the terminal device at the same time, or configures at least one target selection threshold and the request threshold separately.

Step 504: the terminal device uses at least one target selection threshold to select one of the NUL and SUL as a target uplink carrier based on enhanced uplink coverage transmissions.

The terminal device receives at least one target selection threshold in the system message broadcast by the access network device, and optionally, the terminal device also receives a second selection threshold in the system message broadcast by the access network device. The terminal device selects the selection threshold used by the terminal device according to the device capability supported by the terminal device. And under the condition that the terminal equipment supports SUL and enhances uplink coverage, at least one target selection threshold is used for selecting one uplink carrier in NUL and SUL as a target uplink carrier based on transmission of enhanced uplink coverage.

Optionally, the at least one target selection threshold comprises at least one of:

a selection threshold corresponding to RSRP;

a selection threshold corresponding to RSRQ;

a selection threshold corresponding to SINR;

a selection threshold corresponding to RSCP;

a selection threshold corresponding to Ec/No.

Illustratively, where the at least one target selection threshold comprises a selection threshold, the at least one target selection threshold is rsrp-threshold ssb-SUL-CE and the second selection threshold is rsrp-threshold ssb-SUL.

And under the condition that the signal quality of the serving cell is not smaller than the target selection threshold, the terminal equipment can select NUL as the target uplink carrier. And under the condition that the signal quality of the serving cell is smaller than the target selection threshold, the terminal equipment can select the SUL as the target uplink carrier.

Optionally, in case the at least one target selection threshold comprises a selection threshold, the signal quality of the serving cell refers to a measure of the RSRP of the serving cell. In the case that the at least one target selection threshold comprises a plurality of selection thresholds, the terminal device determines that the signal quality of the serving cell is less than the at least one target selection threshold if at least one or all of the following conditions are met:

Step 506: the terminal equipment determines whether to transmit the enhanced uplink coverage based on the target uplink carrier based on the request threshold.

The terminal device receives a first request threshold and a second request threshold in a system message broadcast by the access network device. Based on the signal quality of the serving cell and the first request threshold or the second request threshold, the terminal device can determine whether to perform transmission based on enhanced uplink coverage on the selected target uplink carrier. Illustratively, where the at least one target selection Threshold is rsrp-Threshold-SUL-CE, the first request Threshold is rsrp-Threshold-SUL-CE and the second request Threshold is rsrp-Threshold-CE.

The enhanced uplink coverage based transmission includes at least one of:

in the random access process, the message 3 is repeatedly transmitted;

in the random access procedure, a repeated transmission of message 3 is requested based on message 1.

For the case where the target uplink carrier is SUL:

and under the condition that the target uplink carrier is SUL, the terminal equipment determines whether to transmit based on enhanced uplink coverage on the target uplink carrier based on whether the signal quality of the serving cell is smaller than a first request threshold.

Specifically, under the condition that the target uplink carrier is SUL and the signal quality of the serving cell is not less than the first request threshold, it is determined that transmission based on enhanced uplink coverage is not performed on the target uplink carrier. And under the condition that the target uplink carrier is SUL and the signal quality of the serving cell is smaller than the first request threshold, determining to transmit based on the enhanced uplink coverage on the target uplink carrier.

In the case that the first request threshold includes a plurality of request thresholds, the terminal device determines that the signal quality of the serving cell is less than the first request threshold if at least one or all of the following conditions are satisfied:

the RSRP of the serving cell is smaller than the selection threshold corresponding to the RSRP in the first request threshold;

The RSRQ of the serving cell is less than a selection threshold corresponding to the RSRQ in the first request threshold;

the SINR of the serving cell is smaller than a selection threshold corresponding to the SINR in the first request threshold;

the RSCP of the serving cell is smaller than a selection threshold corresponding to the RSCP in the first request threshold;

the Ec/No of the serving cell is less than the selection threshold corresponding to the Ec/No in the first request threshold.

If the terminal equipment selects the SUL to transmit based on the enhanced uplink coverage, the terminal equipment initiates random access by using the random access resource and/or the preamble specific to the enhanced uplink coverage on the SUL. If the terminal device selects the SUL but does not perform enhanced uplink coverage based transmission, the terminal device initiates random access using conventional (legacy) random access resources and/or preambles. The conventional random access resources and/or preambles belong to the normal uplink coverage.

For the case that the target uplink carrier is NUL:

and under the condition that the target uplink carrier is NUL, the terminal equipment determines whether to transmit based on enhanced uplink coverage on the target uplink carrier based on whether the signal quality of the serving cell is smaller than a second request threshold.

Specifically, under the condition that the target uplink carrier is NUL and the signal quality of the serving cell is not less than the second request threshold, it is determined that transmission based on enhanced uplink coverage is not performed on the target uplink carrier. And under the condition that the target uplink carrier is NUL and the signal quality of the serving cell is smaller than the second request threshold, determining to transmit based on the enhanced uplink coverage on the target uplink carrier.

In the case that the second request threshold includes a plurality of request thresholds, the terminal device determines whether the signal quality of the serving cell is smaller than the second request threshold in the same manner as the first request threshold. The first request threshold includes the same or different number and type of request thresholds as the second request threshold.

If the terminal device selects NUL to transmit based on enhanced uplink coverage, the terminal device initiates random access by using random access resources and/or a preamble unique to enhanced uplink coverage on NUL. If the terminal device selects NUL but does not transmit based on enhanced uplink coverage, the terminal device may initiate random access using conventional random access resources and/or preambles. The conventional random access resources and/or preambles belong to the normal uplink coverage.

Illustratively, fig. 6 is a schematic illustration of coverage provided by an exemplary embodiment of the present application. As shown in fig. 6, taking as an example that the target selection threshold and the request threshold are both thresholds corresponding to RSRP, for the same base station, the coverage area 601 determined according to the second request threshold is smaller than the coverage area 602 determined according to the target selection threshold. The coverage area 602 determined from the target selection threshold is smaller than the coverage area 603 determined from the first request threshold. For terminal devices supporting SUL and enhancing uplink coverage, NUL is selected when the terminal device is within the coverage 602 determined according to the target selection threshold, and SUL is selected when the terminal device is outside the coverage 602 determined according to the target selection threshold. For a terminal device that selects NUL, it will not perform enhanced uplink coverage based transmission when it is within the coverage 601 determined according to the second request threshold, and will perform enhanced uplink coverage based transmission when it is outside the coverage 601 determined according to the second request threshold. For a terminal device that selects the SUL, it will not transmit on an enhanced uplink coverage basis when it is within the coverage 603 determined according to the first request threshold, and will transmit on an enhanced uplink coverage basis when it is outside the coverage 603 determined according to the first request threshold.

In addition, by configuring a plurality of selection thresholds for the terminal equipment, the terminal equipment can select the target selection threshold used by the terminal equipment according to actual conditions to select the uplink carrier, and the flexibility of the terminal equipment in selecting the uplink carrier can be improved.

Second kind: for the case where the terminal device supports SUL but does not support enhanced uplink coverage.

Fig. 7 shows a flowchart of a transmission method based on enhanced uplink coverage according to an embodiment of the present application. Fig. 7 illustrates the application of the method to the communication system shown in fig. 1. The method comprises the following steps:

step 702: the core network device configures a second selection threshold for the terminal device.

The second selection threshold is used for supporting the SUL but not supporting the terminal equipment for enhancing the uplink coverage, and one uplink carrier in the NUL and the SUL is selected as a target uplink carrier based on the transmission of the normal uplink coverage. Optionally, the core network device further configures at least one target selection threshold or a plurality of selection thresholds to the terminal device. The target selection threshold and the plurality of selection thresholds are configured for a terminal device supporting SUL and enhanced uplink coverage, and the target selection threshold and the plurality of selection thresholds are used for the terminal device to select one uplink carrier in NUL and SUL as a target uplink carrier for transmission based on enhanced uplink coverage. At least one target selection threshold and the second selection threshold are different.

Optionally, the core network device configures the second selection threshold to the terminal device through a system message broadcasted by the access network device. The core network device can also configure the second selection threshold for the terminal device based on the MAC CE message, the RRC message, and the like through the access network device.

Step 704: and the terminal equipment uses the second selection threshold to select one uplink carrier in the NUL and the SUL as a target uplink carrier based on the transmission of the normal uplink coverage.

The terminal device receives a second selection threshold in the system message broadcast by the access network device, and optionally, the terminal device also receives at least one target selection threshold or multiple selection thresholds in the system message broadcast by the access network device. The terminal device selects the selection threshold used by the terminal device according to the device capability supported by the terminal device. Illustratively, where the at least one target selection threshold comprises a selection threshold, the at least one target selection threshold is rsrp-threshold ssb-SUL-CE and the second selection threshold is rsrp-threshold ssb-SUL.

In the case that the terminal device supports the SUL but does not support enhanced uplink coverage, the terminal device selects one uplink carrier of the NUL and the SUL as a target uplink carrier for transmission based on normal uplink coverage using the second selection threshold. And under the condition that the signal quality of the serving cell is not smaller than the second selection threshold, the terminal equipment can select NUL as the target uplink carrier. And under the condition that the signal quality of the serving cell is smaller than the second selection threshold, the terminal equipment selects the SUL as the target uplink carrier. The signal quality of a serving cell refers to a measure of the RSRP of the serving cell.

In summary, the method provided in this embodiment may be implemented to configure the request threshold for use by the terminal device that does not support enhanced uplink coverage by configuring the second selection threshold for the terminal device, so that the terminal device selects the uplink carrier. Thus, the terminal equipment which does not support the enhanced uplink coverage can be ensured to select the uplink carrier used by the terminal equipment.

Third kind: for the situation that the terminal equipment supports SUL and enhances uplink coverage, whether transmission based on the enhanced uplink coverage is carried out or not is determined first, and then uplink carrier is selected.

Fig. 8 shows a flowchart of a transmission method based on enhanced uplink coverage according to an embodiment of the present application. Fig. 8 illustrates the application of the method to the communication system shown in fig. 1. The method comprises the following steps:

step 802: the core network device configures a second request threshold and at least one target selection threshold for the terminal device.

And the second request threshold is used for supporting the SUL and the terminal equipment for enhancing the uplink coverage to determine whether to transmit based on the enhanced uplink coverage. The second request threshold and the target selection threshold are different. For example, the second request threshold is less than the target selection threshold. Optionally, the second request threshold can also comprise a plurality of request thresholds. Illustratively, the second request threshold includes at least one of a request threshold corresponding to RSRP, a request threshold corresponding to RSRQ, a request threshold corresponding to SINR, a request threshold corresponding to RSCP, and a request threshold corresponding to Ec/No. The second request threshold is smaller than the target selection threshold, which means that the request threshold of the same type of parameters for measuring the service quality corresponding to the target selection threshold in the second request threshold is smaller than the target selection threshold. For example, the target selection Threshold is rsrp-Threshold SSB-SUL-CE and the second request Threshold is rsrp-Threshold-CE.

Optionally, the core network device configures at least one target selection threshold and a second request threshold to the terminal device through a system message broadcasted by the access network device. The core network device can also configure at least one target selection threshold for the terminal device based on the MAC CE message, the RRC message, etc. through the access network device. Optionally, the core network device configures at least one target selection threshold and the second request threshold to the terminal device at the same time, or configures at least one target selection threshold and the second request threshold separately.

Step 804: the terminal equipment determines whether to transmit based on the enhanced uplink coverage on the target uplink carrier based on the second request threshold.

The terminal equipment receives a second request threshold in the system message broadcast by the access network equipment. Based on the signal quality of the serving cell, the terminal device can determine whether to perform transmission based on enhanced uplink coverage.

Specifically, in the case that the signal quality of the serving cell is not less than the second request threshold, the terminal device does not perform transmission based on enhanced uplink coverage. And under the condition that the signal quality of the serving cell is smaller than the second request threshold, the terminal equipment performs transmission based on the enhanced uplink coverage. The signal quality of a serving cell refers to a measure of the RSRP of the serving cell.

Optionally, in the case that the second request threshold includes a plurality of request thresholds, the terminal device determines that the signal quality of the serving cell is less than the second request threshold if at least one or all of the following conditions are satisfied:

the RSRP of the serving cell is smaller than the selection threshold corresponding to the RSRP in the second request threshold;

the RSRQ of the serving cell is less than a selection threshold corresponding to the RSRQ in the second request threshold;

the SINR of the serving cell is smaller than the selection threshold corresponding to the SINR in the second request threshold;

the RSCP of the serving cell is smaller than a selection threshold corresponding to the RSCP in the second request threshold;

the Ec/No of the serving cell is less than the selection threshold corresponding to the Ec/No in the second request threshold.

The enhanced uplink coverage based transmission includes at least one of:

in the random access process, the message 3 is repeatedly transmitted;

Step 806: the terminal device uses at least one target selection threshold to select one of the NUL and SUL as a target uplink carrier based on enhanced uplink coverage transmissions.

a selection threshold corresponding to RSRP;

a selection threshold corresponding to RSRQ;

a selection threshold corresponding to SINR;

a selection threshold corresponding to RSCP;

a selection threshold corresponding to Ec/No.

In the case where the at least one target selection threshold comprises a selection threshold, the at least one target selection threshold is rsrp-threshold ssb-SUL-CE and the second selection threshold is rsrp-threshold ssb-SUL.

If the terminal equipment selects the SUL to transmit based on the enhanced uplink coverage, the terminal equipment initiates random access by using the random access resource and/or the preamble specific to the enhanced uplink coverage on the SUL. If the terminal device selects the SUL but does not transmit based on enhanced uplink coverage, the terminal device may initiate random access using conventional random access resources and/or preambles. The conventional random access resources and/or preambles belong to the normal uplink coverage.

If the terminal equipment selects the NUL to transmit based on the enhanced uplink coverage, the terminal equipment initiates random access by using random access resources and/or a preamble unique to the enhanced uplink coverage on the NUL. If the terminal device selects NUL but does not transmit based on enhanced uplink coverage, the terminal device may initiate random access using conventional random access resources and/or preambles. The conventional random access resources and/or preambles belong to the normal uplink coverage.

In summary, the method provided in this embodiment may be implemented to configure a separate request threshold for a terminal device supporting enhanced uplink coverage by configuring a target selection threshold for the terminal device, so that the terminal device selects an uplink carrier. And whether transmission based on enhanced uplink coverage is carried out or not is preferentially judged, and uplink carriers are selected, so that the enhanced uplink coverage is utilized to the greatest extent to compensate the coverage of NUL, the use of SUL is reduced, and the situation that the SUL is congested is avoided.

The above embodiments may be implemented alone or in any combination.

Fig. 9 shows a block diagram of a transmission apparatus based on enhanced uplink coverage according to an embodiment of the present application. As shown in fig. 9, the apparatus includes:

a selecting module 901, configured to select one uplink carrier of NUL and SUL using at least one target selection threshold as a target uplink carrier based on transmission of enhanced uplink coverage. The target selection threshold is configured for terminal equipment supporting SUL and enhancing uplink coverage.

In an alternative design, the selection module 901 is configured to:

and selecting NUL as a target uplink carrier under the condition that the signal quality of the serving cell is not less than the target selection threshold. And selecting the SUL as a target uplink carrier under the condition that the signal quality of the serving cell is smaller than a target selection threshold.

In an alternative design, the at least one target selection threshold comprises at least one of:

a selection threshold corresponding to RSRP;

a selection threshold corresponding to RSRQ;

a selection threshold corresponding to the SINR;

a selection threshold corresponding to RSCP;

a selection threshold corresponding to Ec/No.

In an alternative design, the signal quality of the serving cell being less than the target selection threshold comprises: at least one or all of the following conditions are satisfied:

the RSRP of the serving cell is smaller than a selection threshold corresponding to the RSRP in at least one target selection threshold;

the RSRQ of the serving cell is smaller than a selection threshold corresponding to the RSRQ in at least one target selection threshold;

the SINR of the serving cell is smaller than a selection threshold corresponding to the SINR in at least one target selection threshold;

the Ec/No of the serving cell is less than a selection threshold corresponding to the Ec/No of the at least one target selection threshold.

In an alternative design, the selection module 901 is configured to:

and under the condition that the terminal equipment supports SUL and enhances uplink coverage, at least one target selection threshold is used for selecting one uplink carrier in NUL and SUL as a target uplink carrier based on transmission of enhanced uplink coverage.

In an alternative design, the selection module 901 is configured to:

at least one target selection threshold is selected from a plurality of selection thresholds. Wherein the plurality of selection thresholds are configured for terminal devices supporting SULs and enhancing uplink coverage.

In an alternative design, the apparatus further comprises:

a determining module 902, configured to determine, based on the signal quality of the serving cell, whether to perform transmission based on enhanced uplink coverage on the target uplink carrier.

In an alternative design, the determining module 902 is configured to:

and determining whether to perform transmission based on enhanced uplink coverage on the target uplink carrier based on whether the signal quality of the serving cell is smaller than a first request threshold under the condition that the target uplink carrier is SUL. And under the condition that the target uplink carrier is NUL, determining whether to perform transmission based on enhanced uplink coverage on the target uplink carrier based on whether the signal quality of the serving cell is smaller than a second request threshold. The first request threshold and the second request threshold are different, the first request threshold and the target selection threshold are different, and the second request threshold and the target selection threshold are different.

In an alternative design, the first request threshold is greater than the target selection threshold and the second request threshold is less than the target selection threshold.

In an alternative design, the determining module 902 is configured to:

and under the condition that the target uplink carrier is SUL and the signal quality of the serving cell is not less than the first request threshold, determining that the transmission based on the enhanced uplink coverage is not performed on the target uplink carrier. And under the condition that the target uplink carrier is SUL and the signal quality of the serving cell is smaller than the first request threshold, determining to transmit based on the enhanced uplink coverage on the target uplink carrier.

In an alternative design, the determining module 902 is configured to:

and under the condition that the target uplink carrier is NUL and the signal quality of the serving cell is not less than the second request threshold, determining that the transmission based on the enhanced uplink coverage is not performed on the target uplink carrier. And under the condition that the target uplink carrier is NUL and the signal quality of the serving cell is smaller than the second request threshold, determining to transmit based on the enhanced uplink coverage on the target uplink carrier.

In an alternative design, the selection module 901 is configured to:

and in the case that the terminal equipment supports SUL but does not support enhanced uplink coverage, selecting one uplink carrier of NUL and SUL by using a second selection threshold as a target uplink carrier of transmission based on normal uplink coverage. Wherein the target selection threshold and the second selection threshold are different.

In an alternative design, the apparatus further comprises:

a determining module 902, configured to determine whether to perform transmission based on enhanced uplink coverage based on signal quality of a serving cell.

In an alternative design, the determining module 902 is configured to:

and under the condition that the signal quality of the serving cell is not smaller than the second request threshold, transmission based on the enhanced uplink coverage is not carried out. And under the condition that the signal quality of the serving cell is smaller than the second request threshold, performing transmission based on the enhanced uplink coverage.

In an alternative design, the enhanced uplink coverage based transmission may include at least one of:

in the random access process, the message 3 is repeatedly transmitted;

Fig. 10 shows a block diagram of a threshold configuration device according to an embodiment of the present application. As shown in fig. 10, the apparatus includes:

a sending module 1001, configured to configure at least one target selection threshold to a terminal device. The target selection threshold is configured for a terminal device supporting SUL and enhancing uplink coverage, and is used for the terminal device to select one uplink carrier in NUL and SUL as a target uplink carrier based on transmission of enhancing uplink coverage.

a selection threshold corresponding to RSRP;

a selection threshold corresponding to RSRQ;

a selection threshold corresponding to the SINR;

a selection threshold corresponding to RSCP;

a selection threshold corresponding to Ec/No.

In an alternative design, the sending module 1001 is configured to:

a plurality of selection thresholds are configured to the terminal device. The multiple selection thresholds are configured for terminal equipment supporting SUL and enhancing uplink coverage, and the multiple selection thresholds are used for the terminal equipment to select at least one target selection threshold.

in the random access process, the message 3 is repeatedly transmitted;

It should be noted that, when the apparatus provided in the foregoing embodiment performs the functions thereof, only the division of the respective functional modules is used as an example, in practical application, the foregoing functional allocation may be performed by different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules, so as to perform all or part of the functions described above.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

Fig. 11 shows a schematic structural diagram of a communication device (terminal device or network device) according to an exemplary embodiment of the present application, where the communication device 110 includes: a processor 1101, a receiver 1102, a transmitter 1103, a memory 1104 and a bus 1105.

The processor 1101 includes one or more processing cores, and the processor 1101 executes various functional applications and information processing by running software programs and modules.

The receiver 1102 and the transmitter 1103 may be implemented as one communication component, which may be a communication chip.

The memory 1104 is connected to the processor 1101 through a bus 1105.

The memory 1104 may be used to store at least one instruction that the processor 1101 uses to execute to implement the various steps of the method embodiments described above.

Further, the memory 1104 may be implemented by any type or combination of volatile or nonvolatile memory devices including, but not limited to: magnetic or optical disks, electrically erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EEPROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), static random access Memory (Static Random Access Memory, SRAM), read-Only Memory (ROM), magnetic Memory, flash Memory, programmable Read-Only Memory (Programmable Read-Only Memory, PROM).

When the communication device is implemented as a terminal device, the processor and the transceiver in the communication device according to the embodiments of the present application may execute steps executed by the terminal device in the method shown in any of the foregoing method embodiments, which are not described herein again.

When the communication device is implemented as a core network device, the processor and the transceiver in the communication device according to the embodiments of the present application may execute the steps executed by the core network device in any of the methods shown in the foregoing, which are not described herein again.

In an exemplary embodiment, there is also provided a computer readable storage medium having stored therein at least one instruction, at least one program, a code set, or an instruction set, where the at least one instruction, the at least one program, the code set, or the instruction set is loaded and executed by the processor to implement the transmission method based on enhanced uplink coverage performed by the terminal device or the configuration method of the threshold performed by the core network device provided by the above respective method embodiments.

In an exemplary embodiment, a chip is also provided, which includes programmable logic circuits and/or program instructions, for implementing a transmission method based on enhanced uplink coverage, as performed by a terminal device, or a configuration method of a threshold, as performed by a core network device, when the chip is run on a communication device.

In an exemplary embodiment, a computer program product is also provided, which, when run on a processor of a computer device, causes the computer device to perform the above-described transmission method based on enhanced uplink coverage, or the above-described configuration method of the threshold.

Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The foregoing description of the exemplary embodiments of the present application is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, alternatives, and alternatives falling within the spirit and scope of the invention.

Claims

A transmission method based on enhanced uplink coverage, which is applied to a terminal device, the method comprising:

selecting one of a normal uplink carrier NUL and a supplementary uplink carrier SUL as a target uplink carrier based on the enhanced uplink coverage transmission by using at least one target selection threshold;

the target selection threshold is configured for a terminal device supporting the SUL and the enhanced uplink coverage.
The method of claim 1, wherein the selecting one of the NUL and SUL as the target uplink carrier for the transmission based on the enhanced uplink coverage using at least one target selection threshold comprises:

selecting the NUL as the target uplink carrier under the condition that the signal quality of a serving cell is not less than the target selection threshold;

and selecting the SUL as the target uplink carrier under the condition that the signal quality of the serving cell is smaller than the target selection threshold.
The method of claim 2, wherein the at least one target selection threshold comprises at least one of:

a selection threshold corresponding to reference signal received power RSRP;

A selection threshold corresponding to a reference signal received quality RSRQ;

a selection threshold corresponding to the signal-to-interference-plus-noise ratio, SINR;

a selection threshold corresponding to the received signal code power RSCP;

a selection threshold corresponding to the ratio Ec/No of the chip energy and the total interference energy density.
The method of claim 3, wherein the signal quality of the serving cell being less than the target selection threshold comprises: at least one or all of the following conditions are satisfied:

the RSRP of the serving cell is smaller than a selection threshold corresponding to the RSRP in the at least one target selection threshold;

the RSRQ of the serving cell is smaller than a selection threshold corresponding to the RSRQ in the at least one target selection threshold;

the SINR of the serving cell is smaller than a selection threshold corresponding to the SINR in the at least one target selection threshold;

the RSCP of the serving cell is smaller than a selection threshold corresponding to the RSCP in the at least one target selection threshold;

the Ec/No of the serving cell is less than a selection threshold corresponding to the Ec/No in the at least one target selection threshold.
The method of claim 1, wherein the selecting one of the NUL and SUL as the target uplink carrier for the transmission based on the enhanced uplink coverage using at least one target selection threshold comprises:

And under the condition that the terminal equipment supports the SUL and the enhanced uplink coverage, selecting one uplink carrier of the NUL and the SUL by using the at least one target selection threshold as a target uplink carrier of the transmission based on the enhanced uplink coverage.
The method according to any one of claims 1 to 5, wherein before selecting one of the NUL and SUL uplink carriers using at least one target selection threshold, further comprising:

selecting the at least one target selection threshold from a plurality of selection thresholds;

wherein the plurality of selection thresholds are configured for terminal devices supporting the SUL and the enhanced uplink coverage.
The method according to any one of claims 1 to 5, wherein after selecting one of the NUL and SUL uplink carriers using at least one target selection threshold, further comprising:

and determining whether to transmit based on the enhanced uplink coverage on the target uplink carrier based on the signal quality of the serving cell.
The method of claim 7, wherein the determining whether to transmit on the target uplink carrier based on the enhanced uplink coverage based on the signal quality of the serving cell comprises:

Determining whether to transmit based on the enhanced uplink coverage on the target uplink carrier based on whether the signal quality of the serving cell is less than a first request threshold if the target uplink carrier is the SUL;

determining whether to transmit based on the enhanced uplink coverage on the target uplink carrier based on whether the signal quality of the serving cell is less than a second request threshold if the target uplink carrier is the NUL;

the first request threshold and the second request threshold are different, the first request threshold and the target selection threshold are different, and the second request threshold and the target selection threshold are different.
The method of claim 8, wherein the first request threshold is greater than the target selection threshold and the second request threshold is less than the target selection threshold.
The method of claim 8, wherein the determining whether to transmit on the target uplink carrier based on the enhanced uplink coverage based on whether the signal quality of the serving cell is less than a first request threshold if the target uplink carrier is the SUL comprises:

Determining not to transmit based on the enhanced uplink coverage on the target uplink carrier if the target uplink carrier is the SUL and the signal quality of the serving cell is not less than the first request threshold;

and under the condition that the target uplink carrier is the SUL and the signal quality of the serving cell is smaller than the first request threshold, determining to transmit based on the enhanced uplink coverage on the target uplink carrier.
The method of claim 8, wherein the determining whether to transmit based on the enhanced uplink coverage on the target uplink carrier based on whether the signal quality of the serving cell is less than a second request threshold if the target uplink carrier is the NUL comprises:

determining not to transmit based on the enhanced uplink coverage on the target uplink carrier if the target uplink carrier is the NUL and the signal quality of the serving cell is not less than the second request threshold;

and under the condition that the target uplink carrier is the NUL and the signal quality of the serving cell is smaller than the second request threshold, determining to transmit based on the enhanced uplink coverage on the target uplink carrier.
The method according to any one of claims 1 to 5, further comprising:

under the condition that the terminal equipment supports the SUL but does not support the enhanced uplink coverage, selecting one uplink carrier of the NUL and the SUL by using a second selection threshold as a target uplink carrier based on transmission of normal uplink coverage;

wherein the target selection threshold and the second selection threshold are different.
The method according to any one of claims 1 to 5, wherein before selecting one of the NUL and SUL uplink carriers using at least one target selection threshold, further comprising:

based on the signal quality of the serving cell, it is determined whether or not to perform transmission based on the enhanced uplink coverage.
The method of claim 13, wherein the determining whether to perform the transmission based on the enhanced uplink coverage based on the signal quality of the serving cell comprises:

under the condition that the signal quality of the serving cell is not smaller than a second request threshold, transmission based on the enhanced uplink coverage is not carried out;

and carrying out transmission based on the enhanced uplink coverage under the condition that the signal quality of the serving cell is smaller than the second request threshold.
The method according to any of claims 1 to 14, wherein the enhanced uplink coverage based transmission comprises at least one of:

in the random access process, the message 3 is repeatedly transmitted;

in the random access procedure, a repeated transmission of the message 3 is requested based on the message 1.
A method for configuring a threshold, the method being applied to a core network device, the method comprising:

configuring at least one target selection threshold to the terminal equipment;

the target selection threshold is configured for a terminal device supporting SUL and enhanced uplink coverage, and is used for the terminal device to select one uplink carrier of NUL and SUL as a target uplink carrier based on transmission of the enhanced uplink coverage.
The method of claim 16, wherein the at least one target selection threshold comprises at least one of:

a selection threshold corresponding to RSRP;

a selection threshold corresponding to RSRQ;

a selection threshold corresponding to the SINR;

a selection threshold corresponding to RSCP;

a selection threshold corresponding to Ec/No.
The method of claim 16, wherein the method further comprises:

Configuring a plurality of selection thresholds for the terminal equipment;

the multiple selection thresholds are configured for a terminal device supporting the SUL and the enhanced uplink coverage, and the multiple selection thresholds are used for the terminal device to select the at least one target selection threshold.
The method according to any of claims 16 to 18, wherein the enhanced uplink coverage based transmission comprises at least one of:

in the random access process, the message 3 is repeatedly transmitted;

in the random access procedure, a repeated transmission of the message 3 is requested based on the message 1.
A transmission apparatus based on enhanced uplink coverage, the apparatus comprising:

a selecting module, configured to select, using at least one target selection threshold, one uplink carrier of NUL and SUL as a target uplink carrier based on the transmission of the enhanced uplink coverage;

the target selection threshold is configured for a terminal device supporting the SUL and the enhanced uplink coverage.
The apparatus of claim 20, wherein the selection module is configured to:

selecting the NUL as the target uplink carrier under the condition that the signal quality of a serving cell is not less than the target selection threshold;

And selecting the SUL as the target uplink carrier under the condition that the signal quality of the serving cell is smaller than the target selection threshold.
The apparatus of claim 21, wherein the at least one target selection threshold comprises at least one of:

a selection threshold corresponding to RSRP;

a selection threshold corresponding to RSRQ;

a selection threshold corresponding to the SINR;

a selection threshold corresponding to RSCP;

a selection threshold corresponding to Ec/No.
The apparatus of claim 22, wherein the signal quality of the serving cell being less than the target selection threshold comprises: at least one or all of the following conditions are satisfied:

the RSRP of the serving cell is smaller than a selection threshold corresponding to the RSRP in the at least one target selection threshold;

the RSRQ of the serving cell is smaller than a selection threshold corresponding to the RSRQ in the at least one target selection threshold;

the SINR of the serving cell is smaller than a selection threshold corresponding to the SINR in the at least one target selection threshold;

the RSCP of the serving cell is smaller than a selection threshold corresponding to the RSCP in the at least one target selection threshold;

the Ec/No of the serving cell is less than a selection threshold corresponding to the Ec/No in the at least one target selection threshold.
The apparatus of claim 20, wherein the selection module is configured to:

and under the condition that the terminal equipment supports the SUL and the enhanced uplink coverage, selecting one uplink carrier of the NUL and the SUL by using the at least one target selection threshold as a target uplink carrier of the transmission based on the enhanced uplink coverage.
The apparatus of any one of claims 20 to 24, wherein the selection module is configured to:

selecting the at least one target selection threshold from a plurality of selection thresholds;

wherein the plurality of selection thresholds are configured for terminal devices supporting the SUL and the enhanced uplink coverage.
The apparatus according to any one of claims 20 to 24, further comprising:

and the determining module is used for determining whether to transmit based on the enhanced uplink coverage on the target uplink carrier or not based on the signal quality of the serving cell.
The apparatus of claim 26, wherein the means for determining is configured to:

determining whether to transmit based on the enhanced uplink coverage on the target uplink carrier based on whether the signal quality of the serving cell is less than a first request threshold if the target uplink carrier is the SUL;

Determining whether to transmit based on the enhanced uplink coverage on the target uplink carrier based on whether the signal quality of the serving cell is less than a second request threshold if the target uplink carrier is the NUL;

the first request threshold and the second request threshold are different, the first request threshold and the target selection threshold are different, and the second request threshold and the target selection threshold are different.
The apparatus of claim 27, wherein the first request threshold is greater than the target selection threshold and the second request threshold is less than the target selection threshold.
The apparatus of claim 27, wherein the means for determining is configured to:

determining not to transmit based on the enhanced uplink coverage on the target uplink carrier if the target uplink carrier is the SUL and the signal quality of the serving cell is not less than the first request threshold;

and under the condition that the target uplink carrier is the SUL and the signal quality of the serving cell is smaller than the first request threshold, determining to transmit based on the enhanced uplink coverage on the target uplink carrier.
The apparatus of claim 27, wherein the means for determining is configured to:

determining not to transmit based on the enhanced uplink coverage on the target uplink carrier if the target uplink carrier is the NUL and the signal quality of the serving cell is not less than the second request threshold;

and under the condition that the target uplink carrier is the NUL and the signal quality of the serving cell is smaller than the second request threshold, determining to transmit based on the enhanced uplink coverage on the target uplink carrier.
The apparatus of any one of claims 20 to 24, wherein the selection module is configured to:

under the condition that the terminal equipment supports the SUL but does not support the enhanced uplink coverage, selecting one uplink carrier of the NUL and the SUL by using a second selection threshold as a target uplink carrier based on transmission of normal uplink coverage;

wherein the target selection threshold and the second selection threshold are different.
The apparatus according to any one of claims 20 to 24, further comprising:

and the determining module is used for determining whether transmission based on the enhanced uplink coverage is performed or not based on the signal quality of the serving cell.
The apparatus of claim 32, wherein the means for determining is configured to:

under the condition that the signal quality of the serving cell is not smaller than a second request threshold, transmission based on the enhanced uplink coverage is not carried out;

and carrying out transmission based on the enhanced uplink coverage under the condition that the signal quality of the serving cell is smaller than the second request threshold.
The apparatus according to any of claims 20 to 33, wherein the enhanced uplink coverage based transmission comprises at least one of:

in the random access process, the message 3 is repeatedly transmitted;

in the random access procedure, a repeated transmission of the message 3 is requested based on the message 1.
A threshold configuration apparatus, the apparatus comprising:

a sending module, configured to configure at least one target selection threshold to a terminal device;

the target selection threshold is configured for a terminal device supporting the SUL and enhanced uplink coverage, and is used for the terminal device to select one uplink carrier of the NUL and the SUL as a target uplink carrier based on transmission of the enhanced uplink coverage.
The apparatus of claim 35, wherein the at least one target selection threshold comprises at least one of:

a selection threshold corresponding to RSRP;

a selection threshold corresponding to RSRQ;

a selection threshold corresponding to the SINR;

a selection threshold corresponding to RSCP;

a selection threshold corresponding to Ec/No.
The apparatus of claim 35, wherein the means for transmitting is configured to:

configuring a plurality of selection thresholds for the terminal equipment;

the multiple selection thresholds are configured for a terminal device supporting the SUL and the enhanced uplink coverage, and the multiple selection thresholds are used for the terminal device to select the at least one target selection threshold.
The apparatus according to any of claims 35 to 37, wherein the enhanced uplink coverage based transmission comprises at least one of:

in the random access process, the message 3 is repeatedly transmitted;

in the random access procedure, a repeated transmission of the message 3 is requested based on the message 1.
A terminal, the terminal comprising:

a processor;

a transceiver coupled to the processor;

a memory for storing executable instructions of the processor;

Wherein the processor is configured to load and execute the executable instructions to implement the enhanced uplink coverage based transmission method of any one of claims 1 to 15.
A network device, the network device comprising:

a processor;

a transceiver coupled to the processor;

a memory for storing executable instructions of the processor;

wherein the processor is configured to load and execute the executable instructions to implement the method of configuring a threshold as claimed in any one of claims 16 to 19.
A computer readable storage medium having stored therein executable instructions that are loaded and executed by a processor to implement the enhanced uplink coverage based transmission method of any one of claims 1 to 15 or the threshold configuration method of any one of claims 16 to 19.
A chip comprising programmable logic or a program, the chip being configured to implement the enhanced uplink coverage based transmission method according to any one of claims 1 to 15, or the threshold configuration method according to any one of claims 16 to 19.
A computer program product, characterized in that it comprises computer instructions stored in a computer readable storage medium, from which computer instructions a processor of a computer device reads, the processor executing the computer instructions, causing the computer device to perform the transmission method based on enhanced uplink coverage according to any one of claims 1 to 15, or the configuration method of the threshold according to any one of claims 16 to 19.