Coverage level determination method, related device and storage medium

Abstract

This application discloses a coverage level determination method, a terminal, a network device, and a storage medium. The method includes: the terminal determining whether to initiate random access on multiple carriers; and determining the coverage level of non-anchor carriers among the multiple carriers. By employing the scheme of this application, when the terminal accesses multiple carriers, it determines the coverage level of the non-anchor carriers, thereby enabling the selection of appropriate Physical Random Access Channel (PRACH) resources when choosing non-anchor access, ensuring terminal access and improving user experience.

Description

Technical Field

[0001] This application relates to the field of wireless communication, and in particular to a method for determining coverage level, related equipment, and storage medium. Background Technology

[0002] In multi-carrier deployments of Narrowband Internet of Things (NB-IoT), multi-carrier enhancement features support terminals initiating random access on both anchor and non-anchor carriers. In related technologies, within NB-IoT multi-carrier scenarios, the terminal determines its coverage level and selects the Physical Random Access Channel (PRACH) resource corresponding to that coverage level.

[0003] However, the coverage level obtained by the method of determining the terminal coverage level based on related technologies does not match the actual coverage of the terminal, resulting in the selection of an inappropriate PRACH, which affects terminal access and thus affects user experience. Summary of the Invention

[0004] To address the related technical issues, embodiments of this application provide a method for determining coverage level, related equipment, and storage medium.

[0005] The technical solution of this application embodiment is implemented as follows:

[0006] This application provides a coverage level determination method, applied to a terminal, including:

[0007] Determine the coverage level of non-anchor carriers in a multi-carrier configuration.

[0008] In the above scheme, determining the coverage level of non-anchor carriers in a multi-carrier configuration includes:

[0009] Determine the reference signal received power (RSRP) of the non-anchor carrier or the anchor carrier in the multi-carrier configuration;

[0010] Determine the RSRP threshold of the non-anchor carrier or the RSRP threshold offset of the non-anchor carrier relative to the anchor carrier;

[0011] The coverage level of the non-anchor carrier in the multi-carrier system is determined based on the RSRP of the non-anchor carrier or the anchor carrier, and the RSRP threshold of the non-anchor carrier or the RSRP threshold offset of the non-anchor carrier relative to the anchor carrier.

[0012] In the above scheme, determining the RSRP threshold for the non-anchor carrier includes:

[0013] The first information sent by the receiving network side is characterized by the RSRP threshold of the non-anchor carrier.

[0014] And / or,

[0015] The second information sent by the receiving network side represents the RSRP threshold offset of the non-anchor carrier relative to the anchor carrier.

[0016] In the above scheme, the first information sent by the receiving network side includes:

[0017] Receive a broadcast message; the broadcast message carries the first information.

[0018] In the above scheme, the second information received from the network side includes:

[0019] Receive a broadcast message; the broadcast message carries the second information.

[0020] In the above scheme, the RSRP threshold of all non-anchor carriers in the multi-carrier is the same, or each non-anchor carrier in the multi-carrier corresponds to an RSRP threshold;

[0021] And / or,

[0022] The RSRP threshold offset is the same for all non-anchor carriers in the multi-carrier configuration, or each non-anchor carrier in the multi-carrier configuration corresponds to an RSRP threshold offset.

[0023] In the above scheme, determining the coverage level of the non-anchor carriers in the multi-carrier configuration includes:

[0024] Determine the RSRP of the non-anchor carrier;

[0025] Using the determined RSRP and third information, the coverage level of the non-anchor carriers in the multi-carrier system is determined, whereby the third information characterizes the RSRP threshold of the anchor carriers in the multi-carrier system.

[0026] In the above scheme, determining the coverage level of the non-anchor carriers in the multi-carrier configuration includes:

[0027] Determine the RSRP of the anchor carrier in the multi-carrier configuration;

[0028] The RSRP of the non-anchor carrier is determined using the RSRP of the anchor carrier and the fourth information, wherein the fourth information characterizes the power bias of the non-anchor carrier relative to the anchor carrier.

[0029] The coverage level of the non-anchor carrier in the multi-carrier system is determined by using the RSRP of the non-anchor carrier and the third information, whereby the third information characterizes the RSRP threshold of the anchor carrier.

[0030] In the above scheme, determining the coverage level of the non-anchor carriers in the multi-carrier configuration includes:

[0031] Determine the RSRP of the anchor carrier in the multi-carrier configuration;

[0032] The RSRP threshold of the non-anchor carrier is determined using third and fourth information, wherein the third information characterizes the RSRP threshold of the anchor carrier and the fourth information characterizes the power bias of the non-anchor carrier relative to the anchor carrier.

[0033] The coverage level of the non-anchor carriers in the multi-carrier system is determined by using the RSRP threshold of the anchor carrier and the RSRP threshold of the non-anchor carriers.

[0034] The method in the above scheme further includes:

[0035] The access probability of anchor carriers and / or non-anchor carriers is determined based on the coverage levels of anchor carriers and non-anchor carriers.

[0036] The method in the above scheme further includes:

[0037] Based on the access probabilities of anchor carriers and non-anchor carriers, a carrier to be accessed is selected from the multiple carriers.

[0038] In the above scheme, determining the access probability of anchor point and / or non-anchor point carriers includes:

[0039] The fifth information sent by the network side is received. The fifth information represents the access probability or access probability offset of the anchor carrier and / or the non-anchor carrier. The fifth information is used to determine the access probability of the anchor carrier and / or the non-anchor carrier when the coverage levels of the anchor carrier and the non-anchor carrier are different. The access probability offset is used to determine the access probability.

[0040] When it is determined that the coverage levels of anchor carriers and non-anchor carriers are different, the access probability of anchor carriers and / or non-anchor carriers is determined using the fifth information.

[0041] In the above scheme, the fifth piece of information received from the network side includes:

[0042] Receive a broadcast message; the broadcast message carries the fifth information.

[0043] In the above scheme, the fifth information represents the access probability of the first carrier or the access probability bias of the first carrier, including the anchor carrier;

[0044] All non-anchor carriers are equally divided among the remaining probabilities, excluding the access probability of the anchor carrier.

[0045] In the above scheme, the fifth information represents the access probability or access probability offset of the first carrier, and the first carrier includes a non-anchor carrier.

[0046] In the multi-carrier configuration, all carriers except the first carrier share the remaining probability excluding the access probability of the first carrier.

[0047] or,

[0048] The access probability of the first carrier is used as the access probability of the other non-anchor carriers in the multi-carrier system, excluding the first carrier; the remaining probabilities other than the access probabilities of all non-anchor carriers are used as the access probabilities of the anchor carriers.

[0049] In the above scheme, the fifth information represents the access probability or access probability offset of the first carrier, and the first carrier includes the carrier with the best coverage level or the carrier with the worst coverage level.

[0050] In the multi-carrier configuration, all carriers except the first carrier share the remaining probability excluding the access probability of the first carrier.

[0051] or,

[0052] The access probability of the first carrier is used as the access probability of at least one second carrier with the same coverage level as the first carrier among the multiple carriers; at least one third carrier among the multiple carriers equally shares the remaining probability excluding the access probabilities of the first carrier and at least one second carrier, and the coverage level of the third carrier is different from that of the first carrier.

[0053] or,

[0054] In the plurality of carriers, at least one third carrier equally shares the remaining probability excluding the access probability of the first carrier, and the coverage level of the third carrier is different from that of the first carrier.

[0055] In the above scheme, the first carrier includes an anchor carrier; determining the access probability of the first carrier among the multiple carriers includes:

[0056] The access probability is increased based on the first access probability, and the updated access probability is used as the access probability of the anchor carrier.

[0057] All non-anchor carriers are equally divided among the remaining probabilities, excluding the access probability of the anchor carrier.

[0058] In the above scheme, the access probability is reduced based on the second access probability, and the updated access probability is used as the access probability of the first carrier, which includes a non-anchor carrier.

[0059] In the multi-carrier configuration, the remaining probabilities other than the access probability of the first carrier are equally distributed among the other carriers; or, the access probability of the first carrier is used as the access probability of the other non-anchor carriers in the multi-carrier configuration; and the remaining probabilities other than the access probabilities of all non-anchor carriers are used as the access probabilities of the anchor carriers.

[0060] In the above scheme, determining the access probability of the first carrier among the multiple carriers includes:

[0061] The access probability is increased based on the third access probability, and the updated access probability is used as the access probability of the first carrier, which includes the carrier with the best coverage level; or, the access probability is decreased based on the third access probability, and the updated access probability is used as the access probability of the first carrier, which includes the carrier with the worst coverage level.

[0062] In the multi-carrier configuration, all carriers except the first carrier share the remaining probability excluding the access probability of the first carrier.

[0063] or,

[0064] The access probability of the first carrier is used as the access probability of at least one second carrier with the same coverage level as the first carrier among the multiple carriers; at least one third carrier among the multiple carriers equally shares the remaining probability excluding the access probabilities of the first carrier and at least one second carrier, and the coverage level of the third carrier is different from that of the first carrier.

[0065] or,

[0066] At least one third carrier among the plurality of carriers shares the remaining probability excluding the access probability of the first carrier, and the coverage level of the third carrier is different from that of the first carrier.

[0067] This application also provides a coverage level determination method, applied to a network device, including:

[0068] Send first information and / or second information to the terminal, wherein the first information represents the RSRP threshold of the non-anchor carrier in the multi-carrier system, and the second information represents the RSRP threshold offset of the non-anchor carrier relative to the anchor carrier. The first information and / or the second information are used by the terminal to determine the coverage level of the non-anchor carrier.

[0069] The method in the above scheme further includes:

[0070] The terminal is sent fifth information, which represents the access probability or access probability offset of anchor carrier and / or non-anchor carrier. The fifth information is used to determine the access probability of anchor carrier and / or non-anchor carrier when the coverage levels of anchor carrier and non-anchor carrier are different. The access probability offset is used to determine the access probability.

[0071] This application embodiment also provides a terminal, including: a first processor and a first communication interface; wherein,

[0072] The first processor is used to determine the coverage level of the non-anchor carriers in the multi-carrier configuration.

[0073] This application also provides a network device, including: a second processor and a second communication interface; wherein,

[0074] The second communication interface is used to send first information and / or second information to the terminal. The first information represents the RSRP threshold of the non-anchor carrier in the multi-carrier network, and the second information represents the RSRP threshold offset of the non-anchor carrier relative to the anchor carrier. The first information and / or the second information are used by the terminal to determine the coverage level of the non-anchor carrier.

[0075] This application also provides a terminal, including: a first processor and a first memory for storing a computer program capable of running on the processor.

[0076] Wherein, when the first processor is used to run the computer program, it executes the steps of any of the above-described terminal-side methods.

[0077] This application also provides a network device, including: a second processor and a second memory for storing computer programs capable of running on the processor.

[0078] Wherein, when the second processor runs the computer program, it executes the steps of any of the methods described above on the network device side.

[0079] This application also provides a storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of any of the methods described above on the terminal side, or implements the steps of any of the methods described above on the network device side.

[0080] The coverage level determination method, related equipment, and storage medium provided in this application embodiment enable the terminal to initiate random access on multiple carriers; determine the coverage level of non-anchor carriers among the multiple carriers; when the terminal accesses multiple carriers, determine the coverage level of non-anchor carriers, thereby enabling the selection of appropriate PRACH resources when selecting non-anchor access, ensuring terminal access, and improving user experience.

[0081] Furthermore, the access probability of the anchor carrier and / or non-anchor carrier is determined based on the coverage levels of the anchor carrier and non-anchor carrier. In this embodiment, when the coverage levels of the anchor carrier and non-anchor carrier are different, the access probability of multiple carriers is adjusted, and access is made according to the new probability to increase the access probability of carriers with good coverage levels. This ensures that the terminal accesses carriers with good coverage levels as much as possible, avoiding high probability access at poor coverage levels, reducing network resource overhead, i.e., avoiding resource waste and improving user experience. Attached Figure Description

[0082] Figure 1 This is a schematic diagram of an anchor point carrier frequency-dependent networking system.

[0083] Figure 2 This is a schematic diagram of the method for determining the coverage level in an embodiment of this application;

[0084] Figure 3 This is a schematic diagram of a coverage level determination device according to an embodiment of this application;

[0085] Figure 4 This is a schematic diagram of another coverage level determination device according to an embodiment of this application;

[0086] Figure 5 This is a schematic diagram of the terminal structure according to an embodiment of this application;

[0087] Figure 6 This is a schematic diagram of the network device structure according to an embodiment of this application;

[0088] Figure 7 This is a schematic diagram of the system structure for determining the coverage level in an embodiment of this application. Detailed Implementation

[0089] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0090] In related technologies, during NB-IoT multi-carrier random access resource selection and preamble transmission, the PRACH (which can be called narrow-bandwidth PRACH (NPRACH)) resources are determined based on the following two points:

[0091] (1) The terminal measures the reference signal received power (RSRP) on the anchor carrier and determines the coverage level of the user equipment (UE) based on the coverage level threshold of the anchor carrier (i.e., rsrp-ThresholdsPrachInfoList). For non-anchor carriers, there is no specific determination of the coverage level; the coverage level of the anchor carrier is used for non-anchor carriers. In other words, for the UE, the coverage level of the anchor carrier and non-anchor carriers is the same.

[0092] (2) Based on the coverage level of the UE, the probability of selecting the anchor carrier is obtained by base station broadcast (which can be expressed as nprach-ProbabilityAnchor in English); the probability of selecting a non-anchor carrier is equal, and all non-anchor carriers equally share the probability except for the access anchor carrier. That is, the probability of selecting a certain non-anchor carrier is: (1-nprach-ProbabilityAnchor) / number of non-anchor carriers.

[0093] As can be seen from the above description, in related technologies, the coverage level of the anchor carrier is used as the coverage level of the UE. However, in NB-IoT multi-carrier deployment, the anchor carrier is used for heterogeneous networking, while the frequency of the non-anchor carrier is deployed on the same frequency as the neighboring cell. In this case, if the non-anchor carrier transmits at full power, it will cause co-channel interference with the neighboring cell on the same frequency. Therefore, to solve the co-channel interference problem in NB-IoT multi-carrier deployment, the transmit power of the non-anchor carrier base station is generally reduced, resulting in coverage contraction of the non-anchor carrier. Figure 1 As shown, due to coverage contraction of non-anchor carriers, there are overlapping areas where anchor carriers and non-anchor carriers have different coverage levels. When a UE selects a carrier for access, it configures access to an anchor carrier or a non-anchor carrier via broadcast. This considers the access probability of accessing an anchor carrier or a non-anchor carrier under the same coverage level. However, in areas where anchor carriers and non-anchor carriers have overlapping coverage levels—that is, when the coverage level determined for the anchor carrier does not match the actual coverage of the non-anchor carrier—if access to an anchor carrier or a non-anchor carrier is configured via broadcast, accessing the non-anchor carrier may result in a worse coverage level. For non-anchor carriers, this can lead to the selection of unsuitable NPRACH resources, thus affecting UE access and impacting the user's service experience.

[0094] Based on this, in various embodiments of this application, when a terminal accesses multiple carriers, the coverage level of the non-anchor carrier is determined, so that when selecting non-anchor access, appropriate PRACH resources can be selected to ensure terminal access and improve user experience.

[0095] This application provides a method for determining coverage level, applied to a terminal, such as... Figure 2 As shown, the method includes:

[0096] Step 201: Determine whether to initiate random access on multiple carriers;

[0097] Step 202: Determine the coverage level of the non-anchor carriers in the multi-carrier configuration.

[0098] In practical applications, the terminal can be referred to as a user equipment (UE) or a user.

[0099] In step 201, when the terminal is in an NB-IoT multi-carrier scenario, the terminal determines to initiate random access on the multi-carrier. The specific implementation of step 201 is not limited in this embodiment.

[0100] Determining the coverage level of the non-anchor carriers in the multi-carrier system can also be referred to as judging the coverage level of the non-anchor carriers in the multi-carrier system.

[0101] In practical applications, under multi-carrier scenarios, the uplink interference of anchor carriers and non-anchor carriers may differ in the uplink direction. Therefore, the coverage level thresholds for anchor carriers and non-anchor carriers should be different. Thus, the coverage level of non-anchor carriers can be adjusted to match the actual coverage situation by adjusting the coverage level thresholds. On the other hand, in the downlink direction, reducing the transmit power of non-anchor carrier base stations may result in coverage contraction for non-anchor carriers. Therefore, the transmit power can also be adjusted to match the coverage level of non-anchor carriers to the actual coverage situation.

[0102] Based on this, in one embodiment, the specific implementation of determining the coverage level of the non-anchor carrier in the multi-carrier configuration may include:

[0103] The first method determines the coverage level of a non-anchor carrier by increasing the coverage level threshold of the non-anchor carrier or by offsetting the coverage level threshold of the non-anchor carrier relative to the anchor carrier.

[0104] Specifically, in one embodiment, the terminal can determine the signal quality of the non-anchor carrier and determine the coverage level threshold of the non-anchor carrier; using the determined signal quality and coverage level threshold of the non-anchor carrier, the coverage level of the non-anchor carrier in the multi-carrier is determined.

[0105] In practical applications, when determining the signal quality of a non-anchor carrier, the terminal can measure the signal quality of each non-anchor carrier and, based on the signal quality of each non-anchor carrier and its corresponding coverage level threshold, determine the coverage level of each non-anchor carrier. Alternatively, it can randomly select a non-anchor carrier, measure its signal quality, and, based on the signal quality of the selected non-anchor carrier and its corresponding coverage level threshold, determine its coverage level, using the determined coverage level as the coverage level of each non-anchor carrier.

[0106] In another embodiment, the terminal may further determine the signal quality of the anchor carrier and the coverage level threshold of the non-anchor carrier; using the determined signal quality of the anchor carrier and the coverage level threshold of the non-anchor carrier, the coverage level of the non-anchor carrier in the multi-carrier is determined.

[0107] It should be noted that the coverage level threshold of the non-anchor carrier used by the terminal when determining the coverage level of the non-anchor carrier using the signal quality of the non-anchor carrier and the coverage level threshold of the non-anchor carrier is different from the coverage level threshold of the non-anchor carrier used by the terminal when determining the coverage level of the non-anchor carrier using the signal quality of the anchor carrier and the coverage level threshold of the non-anchor carrier.

[0108] In practical applications, the network side can configure the coverage level threshold information of the non-anchor carrier to the terminal, and the terminal can determine the coverage level threshold of the non-anchor carrier accordingly.

[0109] Based on this, in one embodiment, determining the coverage level threshold for the non-anchor carrier includes:

[0110] The first information sent by the receiving network side is characterized by the coverage level threshold of the non-anchor carrier.

[0111] or,

[0112] The system receives second information sent by the network side, the second information representing the coverage level threshold offset of the non-anchor carrier relative to the anchor carrier; and uses the second information to determine the coverage level threshold of the non-anchor carrier.

[0113] As can be seen from the above description, in the first method, the signal quality of the non-anchor carrier or the anchor carrier in the multi-carrier is determined; and the coverage level threshold of the non-anchor carrier or the coverage level threshold offset of the non-anchor carrier relative to the anchor carrier is determined.

[0114] The coverage level of the non-anchor carrier in the multi-carrier system is determined based on the signal quality of the non-anchor carrier or the anchor carrier, and the coverage level threshold of the non-anchor carrier or the offset of the non-anchor carrier relative to the anchor carrier's coverage level threshold.

[0115] Specifically, the coverage level of the non-anchor carrier in the multi-carrier configuration is determined based on the signal quality of the non-anchor carrier or anchor carrier and the coverage level threshold of the non-anchor carrier. Alternatively, the coverage level of the non-anchor carrier in the multi-carrier configuration is determined based on the signal quality of the non-anchor carrier or anchor carrier and the coverage level threshold offset of the non-anchor carrier relative to the anchor carrier. The terminal first determines the coverage level threshold of the non-anchor carrier using the coverage level threshold, and then determines the coverage level of the non-anchor carrier in the multi-carrier configuration based on the signal quality of the non-anchor carrier or anchor carrier and the coverage level threshold of the non-anchor carrier.

[0116] Specifically, for non-anchor carriers, a coverage level threshold field for the non-anchor carrier or an offset field for the coverage level threshold of the non-anchor carrier relative to the anchor carrier is added to the broadcast message. This allows the terminal to determine the coverage level on the non-anchor carrier and select the corresponding NPRACH resource when accessing it. In other words, the terminal obtains the coverage level threshold for the non-anchor carrier or the offset field for the coverage level threshold of the non-anchor carrier relative to the anchor carrier through the broadcast message, and determines the terminal's coverage level on the non-anchor carrier by measuring the signal quality and the coverage level thresholds.

[0117] Based on this, in one embodiment, the first information sent by the receiving network side includes:

[0118] Receive a broadcast message; the broadcast message carries the first information.

[0119] For example, the base station can add a coverage level threshold field for non-anchor carriers in System Message Block 2 (SIB2-NB) for the terminal to determine the coverage level of the non-anchor carrier.

[0120] In one embodiment, the second information sent by the receiving network side includes:

[0121] Receive a broadcast message; the broadcast message carries the second information.

[0122] For example, the base station can add a coverage level threshold offset field for non-anchor carriers relative to anchor carriers in the SIB2-NB, which is used to determine the coverage level of the terminal when the terminal accesses a non-anchor carrier.

[0123] In practical applications, all non-anchor carriers can share a single coverage level threshold, meaning that all non-anchor carriers in the multi-carrier system have the same coverage level threshold. Of course, each non-anchor carrier also has its own coverage level threshold, meaning that each non-anchor carrier in the multi-carrier system corresponds to a single coverage level threshold.

[0124] In practical applications, for the coverage level threshold offset of non-anchor carriers compared to anchor carriers, all non-anchor carriers can share a single coverage level threshold offset, meaning that the coverage level threshold offset of all non-anchor carriers in the multi-carrier configuration is the same. Alternatively, each carrier can have its own coverage level threshold offset, meaning that each carrier corresponds to a coverage level threshold offset.

[0125] Understandably, in practical applications, the coverage level threshold of a carrier is a list containing at least one coverage level threshold, and the terminal determines the coverage level of the carrier it is on based on at least one coverage level threshold.

[0126] The second method involves measuring the signal quality of the non-anchor carrier and determining the coverage level of the terminal on the non-anchor carrier by using the coverage level threshold of the anchor carrier.

[0127] Specifically, in one embodiment, the signal quality of the non-anchor carrier is determined;

[0128] Using the determined signal quality and third information, the coverage level of the non-anchor carriers in the multi-carrier system is determined. The third information represents the coverage level threshold of the anchor carriers in the multi-carrier system (when the signal quality is represented by RSRP, it can be expressed as rsrp-ThresholdsPrachInfoList in English).

[0129] In practical applications, when determining the signal quality of a non-anchor carrier, the terminal can measure the signal quality of each non-anchor carrier and, based on the signal quality of each non-anchor carrier and its corresponding coverage level threshold, determine the coverage level of each non-anchor carrier. Alternatively, it can randomly select a non-anchor carrier, measure its signal quality, and, based on the signal quality of the selected non-anchor carrier and its corresponding coverage level threshold, determine its coverage level, using the determined coverage level as the coverage level of each non-anchor carrier.

[0130] The terminal can obtain the coverage level threshold of the anchor carrier through broadcast messages.

[0131] The third method determines the coverage level of the terminal on the non-anchor carrier by using the transmit power offset of the non-anchor carrier relative to the anchor carrier (which can be expressed as nrs-PowerOffsetNonAnchor). In other words, the coverage level of the non-anchor carrier is compensated by the transmit power offset of the non-anchor carrier relative to the anchor carrier, thereby obtaining the coverage level of the non-anchor carrier.

[0132] Specifically, in one embodiment, the signal quality of the anchor carrier in the multi-carrier is determined;

[0133] The signal quality of the non-anchor carrier is determined using the signal quality of the anchor carrier and the fourth information, wherein the fourth information characterizes the power bias of the non-anchor carrier relative to the anchor carrier.

[0134] The coverage level of the non-anchor carriers in the multi-carrier system is determined by using the signal quality of the non-anchor carriers and third information, whereby the third information characterizes the coverage level threshold of the anchor carriers.

[0135] For example, assuming signal quality is characterized by RSRP, the measured RSRP of the anchor carrier is summed with the power offset of the non-anchor carrier relative to the anchor carrier, i.e., (RSRP + nrs - PowerOffsetNonAnchor). The summation result is used as the RSRP of the non-anchor carrier as a reference. The coverage level of the non-anchor carrier is determined by using the obtained RSRP of the non-anchor carrier and the coverage level threshold of the anchor carrier, i.e., it is used as the coverage level of all non-anchor carriers.

[0136] In another embodiment, the signal quality of the anchor carrier in the multi-carrier configuration is determined;

[0137] Using the third and fourth information, the coverage level threshold for non-anchor carriers is determined;

[0138] The coverage level of the non-anchor carriers in the multi-carrier system is determined by using the signal quality of the anchor carrier and the coverage level threshold of the non-anchor carriers.

[0139] For example, assuming signal quality is characterized by RSRP, the coverage level threshold of the anchor carrier (i.e., rsrp-ThresholdsPrachInfoList) is subtracted from the power offset of the non-anchor carrier relative to the anchor carrier, i.e., (RSRP-nrs-PowerOffsetNonAnchor). The result of the subtraction is used as the coverage level threshold for the non-anchor carrier. The obtained RSRP of the anchor carrier and the coverage level threshold of the non-anchor carrier are used to determine the coverage level of the non-anchor carrier, which is used as the coverage level of all non-anchor carriers.

[0140] In practical applications, the terminal can obtain the fourth information through broadcast messages.

[0141] It should be noted that, in practical applications, the signal quality of the carrier can be characterized by at least one of the following:

[0142] RSRP;

[0143] Reference signal reception quality (RSRQ);

[0144] Signal-to-interference-plus-noise ratio (SINR).

[0145] It should be noted that when signal quality is characterized by RSRP, the coverage level threshold can be called the RSRP threshold, and correspondingly, the coverage level threshold offset can be called the RSRP threshold offset. This application does not limit this.

[0146] In practical applications, coverage level can also be called coverage enhancement level (CElevel), and coverage level threshold can also be called coverage enhancement level threshold. This application does not limit these terms.

[0147] After determining the coverage level of the non-anchor carrier, a carrier to be accessed can be selected from multiple carriers, and random access resources of the coverage level of the carrier to be accessed can be selected. When the coverage levels of the anchor carrier and the non-anchor carrier are different, that is, in the overlapping area of ​​the different coverage levels of the anchor carrier and the non-anchor carrier, the access probability of the multiple carriers is adjusted, and access is made according to the new probability. When the coverage of the non-anchor carrier shrinks compared to the anchor carrier (that is, when the coverage level of the non-anchor carrier is worse than that of the anchor carrier), the access probability of the carrier with a better coverage level is increased, so that the terminal can access the carrier with a better coverage level as much as possible, avoid accessing the carrier with a high probability of poor coverage level, reduce network resource overhead, that is, avoid resource waste and improve user experience.

[0148] Based on this, in one embodiment, the method may further include:

[0149] Determine the coverage level of the anchor carrier in the multi-carrier configuration;

[0150] The access probability of anchor carriers and / or non-anchor carriers is determined based on the coverage levels of anchor carriers and non-anchor carriers.

[0151] Wherein, after determining the access probability, the terminal can select the carrier to be accessed from the multiple carriers based on the access probabilities of the anchor carrier and the non-anchor carrier;

[0152] Select the coverage level of the random access resource for the carrier to be accessed.

[0153] In practical applications, the operations for determining the coverage level of anchor carriers and the operations for determining the coverage level of non-anchor carriers are performed in no particular order.

[0154] When determining the coverage level of the anchor carrier, the signal quality of the anchor carrier can be measured. By using the measured signal quality and the coverage level threshold of the anchor carrier, the coverage level of the terminal on the anchor carrier can be determined.

[0155] When it is determined that the coverage levels of the anchor carrier and the non-anchor carrier are different, it indicates that the terminal is located in an area where the coverage levels of the anchor carrier and the non-anchor carrier overlap.

[0156] The specific implementation method for determining the access probability of anchor carriers and / or non-anchor carriers based on the coverage levels of anchor carriers and non-anchor carriers may include:

[0157] The first approach involves obtaining the access probability of anchor carriers and / or non-anchor carriers through network-side configuration. This allows the network side to control the probability of accessing each carrier and also to adjust the probability based on network load.

[0158] Specifically, the fifth information sent by the network side is received. The fifth information represents the access probability or access probability offset of the anchor carrier and / or non-anchor carrier. The fifth information is used to determine the access probability of the anchor carrier and / or non-anchor carrier when the coverage levels of the anchor carrier and non-anchor carrier are different. The access probability offset is used to determine the access probability.

[0159] When it is determined that the coverage levels of anchor carriers and non-anchor carriers are different, the access probability of anchor carriers and / or non-anchor carriers is determined using the fifth information.

[0160] In practical applications, the fifth information sent by the network side can be received by increasing the access probability or offsetting the access probability when the coverage levels of the broadcast anchor carrier and the non-anchor carrier are different.

[0161] Based on this, in one embodiment, the fifth information sent by the receiving network side includes:

[0162] Receive a broadcast message; the broadcast message carries the fifth information.

[0163] For example, the base station adds a field to the SIB2-NB for the access probability of the first carrier when the coverage levels of the anchor carrier and the non-anchor carrier are different.

[0164] The terminal obtains the access probability when the coverage levels of the anchor carrier and the non-anchor carrier are different through broadcast messages. The terminal selects the anchor carrier or the non-anchor carrier according to the configured access probability when the coverage levels of the anchor carrier and the non-anchor carrier are different, and selects the PRACH resource with the corresponding coverage level.

[0165] In practical applications, the network side can configure the access probability or access probability offset for all anchor carriers. In this case, the terminal obtains the access probability for each carrier based on the network side's configuration. Alternatively, the network side can configure the access probability or access probability setting for one carrier, with the access probabilities of other carriers determined by the terminal.

[0166] Based on this, in one embodiment, the access probability of the first carrier is obtained through network-side configuration. In this case, the fifth information represents the access probability or access probability bias of the first carrier.

[0167] In practical applications, anchor carriers are generally considered to have good coverage due to their high transmit power. However, it's possible that different non-anchor carriers have different power offsets, resulting in good coverage for anchor carriers and some non-anchor carriers, while other non-anchor carriers have poor coverage. Therefore, the network side can specify the first carrier as either an anchor carrier or a non-anchor carrier as needed. Specific definition methods include:

[0168] In the first approach, the first carrier is defined as an anchor carrier (in which case the coverage level of the anchor carrier is the best), and all non-anchor carriers are equally divided in the remaining probability. That is, the first carrier includes the anchor carrier; for non-anchor carriers, all non-anchor carriers are equally divided in the remaining probability excluding the access probability of the anchor carrier.

[0169] The second approach stipulates that the first carrier is any non-anchor carrier, and all other carriers equally share the remaining probability. That is, the first carrier includes a non-anchor carrier, and for all other carriers besides the first carrier, the remaining probability excluding the access probability of the first carrier is equally distributed among them. Alternatively, all non-anchor carriers can have equal probabilities, and the anchor carrier takes the remaining probability. In other words, the access probability of the first carrier is used as the access probability of all other non-anchor carriers in the multi-carrier array; and the remaining probability excluding the access probabilities of all non-anchor carriers is used as the access probability of the anchor carrier.

[0170] The third approach stipulates that the first carrier is any carrier with the best coverage level. In this case, the access probability of other carriers besides the first carrier can be determined in the following three ways:

[0171] The first method involves all other carriers equally sharing the remaining probability. In other words, the first carrier includes the carrier with the best coverage level. For all other carriers besides the first carrier, the remaining probability excluding the access probability of the first carrier is equally shared among the multiple carriers.

[0172] The second approach involves all carriers with the same coverage level as the first carrier having equal probabilities, while carriers with lower coverage levels share the remaining probabilities equally. In other words, the first carrier includes the carrier with the best coverage level. For all other carriers besides the first carrier, the access probability of the first carrier is used as the access probability of at least one second carrier among the multiple carriers with the same coverage level as the first carrier. At least one third carrier among the multiple carriers shares the remaining probabilities excluding the access probabilities of the first carrier and at least one second carrier. The coverage level of the third carrier is different from that of the first carrier.

[0173] The third scenario is that none of the other carriers contain a carrier with the same coverage level as the first carrier. In this case, the remaining probability is equally distributed among the other carriers with poor coverage levels. That is, the first carrier includes the carrier with the best coverage level. For all other carriers besides the first carrier, at least one third carrier among the plurality of carriers equally distributes the remaining probability excluding the access probability of the first carrier. The third carrier has a different coverage level than the first carrier.

[0174] The fourth approach stipulates that the first carrier is any carrier with the worst coverage level. In this case, the access probability of other carriers besides the first carrier can be determined in the following three ways:

[0175] The first method involves all other carriers equally sharing the remaining probability. In other words, the first carrier includes the carrier with the worst coverage level. For all other carriers besides the first carrier, the remaining probability excluding the access probability of the first carrier is equally shared among the multiple carriers.

[0176] The second approach involves all carriers with the same coverage level as the first carrier having equal probabilities, while other carriers with better coverage levels share the remaining probabilities equally. In other words, the first carrier includes the carrier with the worst coverage level. For all carriers other than the first carrier, the access probability of the first carrier is used as the access probability of at least one second carrier with the same coverage level as the first carrier among the multiple carriers. At least one third carrier among the multiple carriers shares the remaining probabilities excluding the access probabilities of the first carrier and at least one second carrier. The coverage level of the third carrier is different from that of the first carrier.

[0177] The third scenario is that none of the other carriers contain a carrier with the same coverage level as the first carrier. In this case, the remaining probability is equally distributed among the other carriers with good coverage levels. That is, the first carrier includes the carrier with the worst coverage level. For all other carriers besides the first carrier, the at least one third carrier equally distributes the remaining probability excluding the access probability of the first carrier. The coverage level of the third carrier is different from that of the first carrier.

[0178] The second approach involves determining the access probability of the first carrier by increasing or decreasing the access probability based on a certain access probability at the terminal. Correspondingly, the remaining probabilities of other carriers are allocated in a certain way, and the access probabilities of the anchor carrier and / or non-anchor carrier are obtained through the terminal implementation.

[0179] Specifically, in one embodiment, the first carrier includes an anchor carrier. The anchor carrier has an increased access probability (which can be set as needed) based on its original access probability. The remaining carriers equally share the remaining probability. That is, the terminal increases the access probability based on the first access probability, and the updated access probability is used as the access probability of the first carrier. Based on the access probability of the first carrier in the multi-carrier configuration, i.e., the access probability after increasing the access probability, the access probabilities of the anchor carrier and non-anchor carriers are determined. All non-anchor carriers equally share the remaining probability excluding the access probability of the anchor carrier. The first access probability can be the original access probability or an access probability determined by the terminal according to a set strategy; this embodiment does not limit this.

[0180] For example, the terminal appropriately increases the access probability of the anchor carrier. That is, based on the access probability of the anchor carrier being nprach-ProbabilityAnchor, the access probability P of the anchor carrier is increased. delta (0≤P delta ≤1-nprach-ProbabilityAnchor), the remaining probability is evenly distributed among non-anchor carriers. This increases the probability of accessing the anchor carrier when the coverage level of the non-anchor carrier is worse than that of the anchor carrier. In other words, access can be made under better coverage conditions, reducing network overhead and improving user experience.

[0181] The probability of accessing an anchor carrier is calculated by adding a certain probability to the access probability value of the current anchor carrier coverage level, expressed by the formula: nprach - ProbabilityAnchor + Pdelta. The probability of accessing a non-anchor carrier is calculated by dividing the remaining probability after adding a certain probability to the anchor carrier, expressed by the formula: (1 - nprach - ProbabilityAnchor - Pdelta) / N, where N represents the number of non-anchor carriers in the multi-carrier network.

[0182] The terminal selects either an anchor carrier or a non-anchor carrier based on the new access probability, and selects PRACH resources using the corresponding coverage level.

[0183] In one embodiment, the first carrier includes a non-anchor carrier, such as any non-anchor carrier. The first carrier's access probability is reduced by a certain amount (which can be set as needed) based on its original access probability. The remaining probability is evenly distributed among the other carriers. Alternatively, the access probabilities of the other non-anchor carriers are the same as those of the first carrier, and the anchor carrier uses its remaining probability. That is, the access probability is reduced based on the second access probability, and the updated access probability is used as the access probability of the first carrier. The remaining probability, excluding the access probability of the first carrier, is evenly distributed among the other carriers in the multi-carrier configuration. Alternatively, the access probability of the first carrier is used as the access probability of the other non-anchor carriers in the multi-carrier configuration. The remaining probability, excluding the access probabilities of all non-anchor carriers, is used as the access probability of the anchor carrier.

[0184] The second access probability can be the original access probability or an access probability determined by the terminal according to the set policy. This application embodiment does not limit this.

[0185] In one embodiment, the first carrier includes the carrier with the best coverage level. For the first carrier, a certain access probability (set as needed) is added to the original probability, that is, the access probability is increased based on the third access probability. The updated access probability is used as the access probability of the first carrier. In this case, the access probabilities of other carriers besides the first carrier are determined in the following three ways:

[0186] The first method involves the remaining carriers equally distributing the remaining probability. In other words, the remaining carriers, excluding the first carrier, equally distribute the remaining probability excluding the access probability of the first carrier.

[0187] The second method involves all carriers with the same coverage level as the first carrier having equal probabilities, while carriers with lower coverage levels share the remaining probabilities equally. In other words, the access probability of the first carrier is used as the access probability of at least one second carrier with the same coverage level as the first carrier among the multiple carriers. At least one third carrier among the multiple carriers shares the remaining probabilities excluding the access probabilities of the first carrier and at least one second carrier, and the coverage level of the third carrier is different from that of the first carrier.

[0188] The third scenario is that none of the other carriers contain a carrier with the same coverage level as the first carrier. In this case, the remaining probability is shared equally among the other carriers with lower coverage levels. That is, at least one third carrier among the multiple carriers shares the remaining probability excluding the access probability of the first carrier. The third carrier has a different coverage level than the first carrier.

[0189] The third access probability can be the original access probability or an access probability determined by the terminal according to the set policy. This application embodiment does not limit this.

[0190] In one embodiment, the first carrier includes the carrier with the worst coverage level. For the first carrier, the access probability is reduced by a certain amount (set as needed), that is, the access probability is reduced based on the third access probability. The updated access probability is used as the access probability of the first carrier. In this case, the access probabilities of other carriers besides the first carrier are determined in the following three ways:

[0191] The first method involves the remaining carriers equally distributing the remaining probability. In other words, the remaining carriers, excluding the first carrier, equally distribute the remaining probability excluding the access probability of the first carrier.

[0192] The second method involves all carriers with the same coverage level as the first carrier having equal probabilities, and other carriers with better coverage levels sharing the remaining probabilities equally. In other words, the access probability of the first carrier is used as the access probability of at least one second carrier with the same coverage level as the first carrier among the multiple carriers; at least one third carrier among the multiple carriers shares the remaining probability excluding the access probabilities of the first carrier and at least one second carrier, and the coverage level of the third carrier is different from that of the first carrier.

[0193] The third scenario is that none of the other carriers contain a carrier with the same coverage level as the first carrier. In this case, the remaining probability is equally distributed among the other carriers with good coverage levels. That is, at least one third carrier among the multiple carriers shares the remaining probability excluding the access probability of the first carrier. The coverage level of the third carrier is different from that of the first carrier.

[0194] Accordingly, this application also provides a method for determining coverage level, applied to network devices (specifically, base stations), the method comprising:

[0195] Send first information and / or second information to the terminal, wherein the first information represents the coverage level threshold of the non-anchor carrier in the multi-carrier system, and the second information represents the coverage level threshold offset of the non-anchor carrier relative to the anchor carrier. The first information and / or the second information are used by the terminal to determine the coverage level of the non-anchor carrier.

[0196] In one embodiment, a broadcast message is sent, the broadcast message carrying either the first information or the second information.

[0197] In practical applications, the network device may determine the coverage level threshold of the non-anchor carrier and the offset of the non-anchor carrier relative to the anchor carrier as needed. This application does not limit this.

[0198] In one embodiment, the method may further include:

[0199] The terminal is sent fifth information, which represents the access probability or access probability offset of anchor carrier and / or non-anchor carrier. The fifth information is used to determine the access probability of anchor carrier and / or non-anchor carrier when the coverage levels of anchor carrier and non-anchor carrier are different. The access probability offset is used to determine the access probability.

[0200] In one embodiment, a broadcast message is sent, the broadcast message carrying the fifth information.

[0201] In practical applications, the network device may determine the access probability or access probability offset of the anchor carrier and / or non-anchor carrier as needed, and this application embodiment does not limit this.

[0202] The coverage level determination method provided in this application embodiment allows the terminal to determine the coverage level of non-anchor carriers among multiple carriers. When the terminal accesses multiple carriers, it determines the coverage level of non-anchor carriers, thereby enabling the selection of appropriate PRACH resources when choosing non-anchor access, ensuring terminal access and improving user experience.

[0203] To implement the method of the embodiments of this application, the embodiments of this application also provide a coverage level determination device, which is installed on a terminal, such as... Figure 3 As shown, the device includes:

[0204] The first determining unit 301 is used to determine whether random access is initiated on a multi-carrier;

[0205] The second determining unit 302 is used to determine the coverage level of the non-anchor carrier in the multi-carrier configuration.

[0206] In one embodiment, the second determining unit 302 is configured to:

[0207] Determine the signal quality of non-anchor carriers or anchor carriers;

[0208] Determine the coverage level threshold for non-anchor carriers or the coverage level threshold offset of non-anchor carriers relative to anchor carriers.

[0209] The coverage level of the non-anchor carrier in the multi-carrier system is determined based on the signal quality of the non-anchor carrier or the anchor carrier, and the coverage level threshold of the non-anchor carrier or the offset of the non-anchor carrier relative to the anchor carrier's coverage level threshold.

[0210] In one embodiment, the second determining unit 302 is configured to:

[0211] The first information sent by the receiving network side represents the coverage level threshold of the non-anchor carrier.

[0212] In one embodiment, the second determining unit 302 is configured to:

[0213] The receiver receives second information sent by the network side, the second information representing the coverage level threshold offset of the non-anchor carrier relative to the anchor carrier.

[0214] In one embodiment, the second determining unit 302 is configured to receive a broadcast message; the broadcast message carries the first information.

[0215] In one embodiment, the second determining unit 302 is configured to receive a broadcast message; the broadcast message carries the second information.

[0216] In one embodiment, the second determining unit 302 is configured to:

[0217] Determine the signal quality of non-anchor carriers;

[0218] Using the determined signal quality and third information, the coverage level of the non-anchor carriers in the multi-carrier system is determined, whereby the third information characterizes the coverage level threshold of the anchor carriers in the multi-carrier system.

[0219] In one embodiment, the second determining unit 302 is configured to:

[0220] Determine the signal quality of the anchor carrier in the multi-carrier configuration;

[0221] The signal quality of the non-anchor carrier is determined using the signal quality of the anchor carrier and the fourth information, wherein the fourth information characterizes the power bias of the non-anchor carrier relative to the anchor carrier.

[0222] The coverage level of the non-anchor carriers in the multi-carrier system is determined by using the signal quality of the non-anchor carriers and third information, whereby the third information characterizes the coverage level threshold of the anchor carriers.

[0223] In one embodiment, the second determining unit 302 is configured to:

[0224] Determine the signal quality of the anchor carrier in the multi-carrier configuration;

[0225] The coverage level threshold of the non-anchor carrier is determined using third and fourth information, wherein the third information represents the coverage level threshold of the anchor carrier and the fourth information represents the power offset of the non-anchor carrier relative to the anchor carrier.

[0226] The coverage level of the non-anchor carriers in the multi-carrier system is determined by using the signal quality of the anchor carrier and the coverage level threshold of the non-anchor carriers.

[0227] In one embodiment, the device may further include:

[0228] The access processing unit is used for:

[0229] Determine the coverage level of the anchor carrier in the multi-carrier configuration;

[0230] The access probability of anchor carriers and / or non-anchor carriers is determined based on the coverage levels of anchor carriers and non-anchor carriers.

[0231] In one embodiment, the access processing unit is further configured to:

[0232] Based on the access probabilities of anchor carriers and non-anchor carriers, a carrier to be accessed is selected from the multiple carriers;

[0233] Select the coverage level of the random access resource for the carrier to be accessed.

[0234] In one embodiment, the access processing unit is further configured to select random access resources of the coverage level of the carrier to be accessed.

[0235] In one embodiment, the access processing unit is configured to:

[0236] The fifth information sent by the network side is received. The fifth information represents the access probability or access probability offset of the anchor carrier and / or the non-anchor carrier. The fifth information is used to determine the access probability of the anchor carrier and / or the non-anchor carrier when the coverage levels of the anchor carrier and the non-anchor carrier are different. The access probability offset is used to determine the access probability.

[0237] When it is determined that the coverage levels of anchor carriers and non-anchor carriers are different, the access probability of anchor carriers and / or non-anchor carriers is determined using the fifth information.

[0238] In one embodiment, the access processing unit is configured to receive a broadcast message; the broadcast message carries the fifth information.

[0239] In one embodiment, the fifth information represents the access probability or access probability offset of the first carrier, the first carrier including an anchor carrier; the access processing unit is configured to:

[0240] All non-anchor carriers are equally divided among the remaining probabilities, excluding the access probability of the anchor carrier.

[0241] In one embodiment, the fifth information represents the access probability or access probability offset of the first carrier, the first carrier including a non-anchor carrier; the access processing unit is configured to:

[0242] In the multi-carrier configuration, all carriers except the first carrier share the remaining probability excluding the access probability of the first carrier.

[0243] or,

[0244] The access probability of the first carrier is used as the access probability of the other non-anchor carriers in the multi-carrier system, excluding the first carrier; the remaining probabilities other than the access probabilities of all non-anchor carriers are used as the access probabilities of the anchor carriers.

[0245] In one embodiment, the fifth information represents the access probability or access probability offset of the first carrier, the first carrier including the carrier with the best coverage level or the carrier with the worst coverage level; the access processing unit is configured to:

[0246] In the multi-carrier configuration, all carriers except the first carrier share the remaining probability excluding the access probability of the first carrier.

[0247] or,

[0248] The access probability of the first carrier is used as the access probability of at least one second carrier with the same coverage level as the first carrier among the multiple carriers; at least one third carrier among the multiple carriers equally shares the remaining probability excluding the access probabilities of the first carrier and at least one second carrier, and the coverage level of the third carrier is different from that of the first carrier.

[0249] or,

[0250] In the plurality of carriers, at least one third carrier equally shares the remaining probability excluding the access probability of the first carrier, and the coverage level of the third carrier is different from that of the first carrier.

[0251] In one embodiment, the first carrier includes an anchor carrier; the access processing unit is configured to:

[0252] The access probability is increased based on the first access probability, and the updated access probability is used as the access probability of the anchor carrier.

[0253] All non-anchor carriers are equally divided among the remaining probabilities, excluding the access probability of the anchor carrier.

[0254] In one embodiment, the access processing unit is configured to:

[0255] The access probability is reduced based on the second access probability, and the updated access probability is used as the access probability of the first carrier, which includes a non-anchor carrier.

[0256] In the multi-carrier configuration, the remaining probabilities other than the access probability of the first carrier are equally distributed among the other carriers; or, the access probability of the first carrier is used as the access probability of the other non-anchor carriers in the multi-carrier configuration; and the remaining probabilities other than the access probabilities of all non-anchor carriers are used as the access probabilities of the anchor carriers.

[0257] In one embodiment, the access processing unit is configured to:

[0258] The access probability is increased based on the third access probability, and the updated access probability is used as the access probability of the first carrier, which includes the carrier with the best coverage level; or, the access probability is decreased based on the third access probability, and the updated access probability is used as the access probability of the first carrier, which includes the carrier with the worst coverage level.

[0259] In the multiple carriers, all carriers except the first carrier share the remaining probability excluding the access probability of the first carrier; or, the access probability of the first carrier is used as the access probability of at least one second carrier with the same coverage level as the first carrier in the multiple carriers; in the multiple carriers, at least one third carrier shares the remaining probability excluding the access probabilities of the first carrier and at least one second carrier, and the coverage level of the third carrier is different from that of the first carrier; or, in the multiple carriers, at least one third carrier shares the remaining probability excluding the access probability of the first carrier, and the coverage level of the third carrier is different from that of the first carrier.

[0260] In practical applications, the first determining unit 301 can be implemented by the processor in the coverage level determining device, and the second determining unit 302 and the access processing unit can be implemented by the processor in the coverage level determining device in combination with the communication interface.

[0261] To implement the network device-side method of this application embodiment, this application embodiment also provides a coverage level determination device, which is installed on the network device, such as... Figure 4 As shown, the device includes:

[0262] The first transmitting unit 401 transmits first information and / or second information to the terminal. The first information represents the coverage level threshold of the non-anchor carrier in the multi-carrier system, and the second information represents the RSRP threshold offset of the non-anchor carrier relative to the anchor carrier. The first information and / or the second information are used by the terminal to determine the coverage level of the non-anchor carrier.

[0263] In one embodiment, the first sending unit 401 is used to send a broadcast message, the broadcast message carrying the first information or the second information.

[0264] In one embodiment, such as Figure 4 As shown, the device may further include:

[0265] The second transmitting unit 402 is used to transmit fifth information to the terminal. The fifth information represents the access probability or access probability offset of the anchor carrier and / or the non-anchor carrier. The fifth information is used to determine the access probability of the anchor carrier and / or the non-anchor carrier when the coverage levels of the anchor carrier and the non-anchor carrier are different. The access probability offset is used to determine the access probability.

[0266] In one embodiment, the second sending unit 402 is used to send a broadcast message, the broadcast message carrying the fifth information.

[0267] In practical applications, the first transmitting unit 401 and the second transmitting unit 402 can be implemented by the processor in the coverage level determination device in combination with the communication interface.

[0268] It should be noted that the coverage level determination device provided in the above embodiments is only illustrated by the division of the above-described program modules when determining the coverage level. In practical applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device can be divided into different program modules to complete all or part of the processing described above. In addition, the coverage level determination device and the coverage level determination method embodiments provided in the above embodiments belong to the same concept, and their specific implementation process can be found in the method embodiments, which will not be repeated here.

[0269] Based on the hardware implementation of the above program modules, and in order to implement the terminal-side method of the embodiments of this application, the embodiments of this application also provide a terminal, such as... Figure 5 As shown, the terminal 500 includes:

[0270] The first communication interface 501 is capable of exchanging information with the network side;

[0271] The first processor 502 is connected to the first communication interface 501 to enable information interaction with the network side and to execute the methods provided by one or more of the above-mentioned terminal side technical solutions when running a computer program.

[0272] The computer program is stored in the first memory 503.

[0273] Specifically, the first processor 502 is used to determine whether to initiate random access in a multi-carrier configuration; and to determine the coverage level of the non-anchor carriers in the multi-carrier configuration.

[0274] In one embodiment, the first processor 502 is configured to:

[0275] Determine the signal quality of non-anchor carriers or anchor carriers;

[0276] Determine the coverage level threshold for non-anchor carriers or the coverage level threshold offset of non-anchor carriers relative to anchor carriers.

[0277] The coverage level of the non-anchor carrier in the multi-carrier system is determined based on the signal quality of the non-anchor carrier or the anchor carrier, and the coverage level threshold of the non-anchor carrier or the offset of the non-anchor carrier relative to the anchor carrier's coverage level threshold.

[0278] In one embodiment, the first processor 502 is configured to:

[0279] The first information sent by the network side is received through the first communication interface 501, and the first information represents the coverage level threshold of the non-anchor carrier.

[0280] In one embodiment, the first processor 502 is configured to:

[0281] The first communication interface 501 receives second information sent by the network side, the second information representing the coverage level threshold offset of the non-anchor carrier relative to the anchor carrier; the second information is used to determine the coverage level threshold of the non-anchor carrier.

[0282] In one embodiment, the first processor 502 is configured to receive a broadcast message through the first communication interface 501; the broadcast message carries the first information.

[0283] In one embodiment, the first processor 502 is configured to receive a broadcast message through the first communication interface 501; the broadcast message carries the second information.

[0284] In one embodiment, the first processor 502 is configured to:

[0285] Determine the signal quality of non-anchor carriers;

[0286] Using the determined signal quality and third information, the coverage level of the non-anchor carriers in the multi-carrier system is determined, whereby the third information characterizes the coverage level threshold of the anchor carriers in the multi-carrier system.

[0287] In one embodiment, the first processor 502 is configured to:

[0288] Determine the signal quality of the anchor carrier in the multi-carrier configuration;

[0289] The signal quality of the non-anchor carrier is determined using the signal quality of the anchor carrier and the fourth information, wherein the fourth information characterizes the power bias of the non-anchor carrier relative to the anchor carrier.

[0290] The coverage level of the non-anchor carriers in the multi-carrier system is determined by using the signal quality of the non-anchor carriers and third information, whereby the third information characterizes the coverage level threshold of the anchor carriers.

[0291] In one embodiment, the first processor 502 is configured to:

[0292] Determine the signal quality of the anchor carrier in the multi-carrier configuration;

[0293] The coverage level threshold of the non-anchor carrier is determined using third and fourth information, wherein the third information represents the coverage level threshold of the anchor carrier and the fourth information represents the power offset of the non-anchor carrier relative to the anchor carrier.

[0294] The coverage level of the non-anchor carriers in the multi-carrier system is determined by using the signal quality of the anchor carrier and the coverage level threshold of the non-anchor carriers.

[0295] In one embodiment, the first processor 502 is further configured to:

[0296] Determine the coverage level of the anchor carrier in the multi-carrier configuration;

[0297] The access probability of anchor carriers and / or non-anchor carriers is determined based on the coverage levels of anchor carriers and non-anchor carriers.

[0298] In one embodiment, the first processor 502 is further configured to:

[0299] Based on the access probabilities of anchor carriers and non-anchor carriers, a carrier to be accessed is selected from the multiple carriers.

[0300] In one embodiment, the first processor 502 is further configured to select random access resources of the coverage level of the carrier to be accessed.

[0301] In one embodiment, the first processor 502 is configured to:

[0302] The network side receives fifth information through the first communication interface 501. The fifth information represents the access probability or access probability offset of the anchor carrier and / or non-anchor carrier. The fifth information is used to determine the access probability of the anchor carrier and / or non-anchor carrier when the coverage levels of the anchor carrier and non-anchor carrier are different. The access probability offset is used to determine the access probability.

[0303] When it is determined that the coverage levels of anchor carriers and non-anchor carriers are different, the access probability of anchor carriers and / or non-anchor carriers is determined using the fifth information.

[0304] In one embodiment, the first processor 502 is configured to receive a broadcast message through the first communication interface 501; the broadcast message carries the fifth information.

[0305] In one embodiment, the fifth information represents the access probability or access probability offset of the first carrier, the first carrier including an anchor carrier; the first processor 502 is configured to:

[0306] All non-anchor carriers are equally divided among the remaining probabilities, excluding the access probability of the anchor carrier.

[0307] In one embodiment, the fifth information represents the access probability or access probability offset of the first carrier, the first carrier including a non-anchor carrier; the first processor 502 is configured to:

[0308] In the multi-carrier configuration, all carriers except the first carrier share the remaining probability excluding the access probability of the first carrier.

[0309] or,

[0310] The access probability of the first carrier is used as the access probability of the other non-anchor carriers in the multi-carrier system, excluding the first carrier; the remaining probabilities other than the access probabilities of all non-anchor carriers are used as the access probabilities of the anchor carriers.

[0311] In one embodiment, the fifth information represents the access probability or access probability offset of the first carrier, the first carrier including the carrier with the best coverage level or the carrier with the worst coverage level; the first processor 502 is configured to:

[0312] In the multi-carrier configuration, all carriers except the first carrier share the remaining probability excluding the access probability of the first carrier.

[0313] or,

[0314] The access probability of the first carrier is used as the access probability of at least one second carrier with the same coverage level as the first carrier among the multiple carriers; at least one third carrier among the multiple carriers equally shares the remaining probability excluding the access probabilities of the first carrier and at least one second carrier, and the coverage level of the third carrier is different from that of the first carrier.

[0315] or,

[0316] In the plurality of carriers, at least one third carrier equally shares the remaining probability excluding the access probability of the first carrier, and the coverage level of the third carrier is different from that of the first carrier.

[0317] In one embodiment, the first carrier includes an anchor carrier; the first processor 502 is configured to:

[0318] The access probability is increased based on the first access probability, and the updated access probability is used as the access probability of the anchor carrier.

[0319] All non-anchor carriers are equally divided among the remaining probabilities, excluding the access probability of the anchor carrier.

[0320] In one embodiment, the first processor 502 is configured to:

[0321] The access probability is reduced based on the second access probability, and the updated access probability is used as the access probability of the first carrier, which includes a non-anchor carrier.

[0322] In the multi-carrier configuration, all carriers except the first carrier share the remaining probability excluding the access probability of the first carrier.

[0323] or,

[0324] The access probability of the first carrier is used as the access probability of the other non-anchor carriers in the multi-carrier system, excluding the first carrier; the remaining probabilities other than the access probabilities of all non-anchor carriers are used as the access probabilities of the anchor carriers.

[0325] In one embodiment, the first processor 502 is configured to:

[0326] The access probability is increased based on the third access probability, and the updated access probability is used as the access probability of the first carrier, which includes the carrier with the best coverage level; or, the access probability is decreased based on the third access probability, and the updated access probability is used as the access probability of the first carrier, which includes the carrier with the worst coverage level.

[0327] The determination of the access probabilities of the anchor carrier and non-anchor carriers based on the access probability of the first carrier in the multi-carrier configuration includes:

[0328] In the multi-carrier configuration, all carriers except the first carrier share the remaining probability excluding the access probability of the first carrier.

[0329] or,

[0330] The access probability of the first carrier is used as the access probability of at least one second carrier with the same coverage level as the first carrier among the multiple carriers; at least one third carrier among the multiple carriers equally shares the remaining probability excluding the access probabilities of the first carrier and at least one second carrier, and the coverage level of the third carrier is different from that of the first carrier.

[0331] or,

[0332] At least one third carrier among the plurality of carriers shares the remaining probability excluding the access probability of the first carrier, and the coverage level of the third carrier is different from that of the first carrier.

[0333] It should be noted that the specific processing procedures of the first processor 502 and the first communication interface 501 can be understood by referring to the above method.

[0334] Of course, in practical applications, the various components in terminal 500 are coupled together through bus system 504. It can be understood that bus system 504 is used to implement communication between these components. In addition to the data bus, bus system 404 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 5 The general designated all buses as Bus System 504.

[0335] The first memory 503 in this embodiment is used to store various types of data to support the operation of the terminal 500. Examples of such data include any computer program used to operate on the terminal 500.

[0336] The methods disclosed in the embodiments of this application can be applied to the first processor 502, or implemented by the first processor 502. The first processor 502 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware or by instructions in the form of software in the first processor 502. The first processor 502 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The first processor 502 can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of this application can be directly reflected as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, which is located in the first memory 503. The first processor 502 reads the information in the first memory 503 and completes the steps of the aforementioned method in combination with its hardware.

[0337] In an exemplary embodiment, terminal 500 may be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors, or other electronic components to perform the aforementioned method.

[0338] Based on the hardware implementation of the above program modules, and in order to implement the method on the network device side of the embodiments of this application, the embodiments of this application also provide a network device, such as... Figure 6 As shown, the network device 600 includes:

[0339] The second communication interface 601 is capable of exchanging information with the terminal;

[0340] The second processor 602 is connected to the second communication interface 601 to enable information interaction with the terminal and to execute the methods provided by one or more technical solutions on the network device side when running computer programs.

[0341] The computer program is stored in the first memory 603, which is a second memory 603.

[0342] Specifically, the second communication interface 601 is used to send first information or second information to the terminal. The first information represents the coverage level threshold of the non-anchor carrier in the multi-carrier network, and the second information represents the coverage level threshold offset of the non-anchor carrier relative to the anchor carrier. The first information and / or the second information are used by the terminal to determine the coverage level of the non-anchor carrier.

[0343] In one embodiment, the second communication interface 602 is used to send a broadcast message, the broadcast message carrying the first information or the second information.

[0344] In one embodiment, the second communication interface 602 is further configured to send fifth information to the terminal, the fifth information representing the access probability or access probability offset of the anchor carrier and / or non-anchor carrier, the fifth information being used to determine the access probability of the anchor carrier and / or non-anchor carrier when the coverage levels of the anchor carrier and non-anchor carrier are different, and the access probability offset being used to determine the access probability.

[0345] It should be noted that the specific processing procedures of the second processor 602 and the second communication interface 601 can be understood by referring to the above method.

[0346] Of course, in practical applications, the various components in network device 600 are coupled together through bus system 604. It can be understood that bus system 604 is used to implement communication between these components. In addition to a data bus, bus system 604 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 6 The general designated all buses as Bus System 604.

[0347] The first memory 603 in this embodiment is used to store various types of data to support the operation of the network device 600. Examples of such data include any computer program used to operate on the network device 600.

[0348] The methods disclosed in the embodiments of this application can be applied to, or implemented by, the second processor 602. The second processor 602 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method can be completed by the integrated logic circuitry of the hardware or by instructions in the form of software within the second processor 602. The second processor 602 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The second processor 602 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of this application can be directly manifested as execution by a hardware decoding processor, or execution by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, specifically in the first memory 603. The second processor 602 reads information from the first memory 603 and, in conjunction with its hardware, completes the steps of the aforementioned method.

[0349] In an exemplary embodiment, the network device 600 may be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors, or other electronic components to perform the aforementioned method.

[0350] It is understood that the memories (first memory 503, second memory 603) in the embodiments of this application can be volatile memory or non-volatile memory, or both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM); magnetic surface memory can be disk storage or magnetic tape storage. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).The memories described in the embodiments of this application are intended to include, but are not limited to, these and any other suitable types of memories.

[0351] To implement the method provided in the embodiments of this application, the embodiments of this application also provide a coverage level determination system, such as... Figure 7 As shown, the system includes: network device 701 and terminal 702.

[0352] It should be noted that the specific processing procedures of the network device 701 and the terminal 702 have been described in detail above and will not be repeated here.

[0353] In an exemplary embodiment, this application also provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium. For example, it may include a first memory 503 storing a computer program, which can be executed by a first processor 502 of a terminal 500 to complete the steps described in the aforementioned terminal-side method. Another example is a second memory 603 storing a computer program, which can be executed by a second processor 602 of a network device 600 to complete the steps described in the aforementioned network device-side method. The computer-readable storage medium may be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM.

[0354] It should be noted that terms such as "first" and "second" are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0355] Furthermore, the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0356] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of protection of this application.

Claims

1. A coverage level determination method, characterized by, Applied to terminals, including: Determine the coverage level of non-anchor carriers in a multi-carrier configuration; among which, The method further includes: Based on the coverage levels of anchor carriers and non-anchor carriers, determine the access probability of anchor carriers and / or non-anchor carriers; The determination of the access probability of anchor point and / or non-anchor point carriers includes: The fifth information sent by the network side is received. The fifth information represents the access probability or access probability offset of the anchor carrier and / or the non-anchor carrier. The fifth information is used to determine the access probability of the anchor carrier and / or the non-anchor carrier when the coverage levels of the anchor carrier and the non-anchor carrier are different. The access probability offset is used to determine the access probability. When it is determined that the coverage levels of anchor carriers and non-anchor carriers are different, the access probability of anchor carriers and / or non-anchor carriers is determined using the fifth information.

2. The method of claim 1, wherein, Determining the coverage level of non-anchor carriers in a multi-carrier configuration includes: Determine the reference signal received power RSRP of the non-anchor carrier or the anchor carrier in the multi-carrier configuration; Determine the RSRP threshold of the non-anchor carrier or the RSRP threshold offset of the non-anchor carrier relative to the anchor carrier; The coverage level of the non-anchor carrier in the multi-carrier system is determined based on the RSRP of the non-anchor carrier or the anchor carrier, and the RSRP threshold of the non-anchor carrier or the RSRP threshold offset of the non-anchor carrier relative to the anchor carrier.

3. The method of claim 2, wherein, The determination of the RSRP threshold for non-anchor carriers includes: The first information sent by the receiving network side is characterized by the RSRP threshold of the non-anchor carrier. And / or, Determining the RSRP threshold offset of the non-anchor carrier relative to the anchor carrier includes: The second information sent by the receiving network side represents the RSRP threshold offset of the non-anchor carrier relative to the anchor carrier.

4. The method according to claim 2, characterized in that, The RSRP thresholds of all non-anchor carriers in the multi-carrier system are the same, or each non-anchor carrier in the multi-carrier system corresponds to an RSRP threshold. And / or, The RSRP threshold offset is the same for all non-anchor carriers in the multi-carrier configuration, or each non-anchor carrier in the multi-carrier configuration corresponds to an RSRP threshold offset.

5. The method according to claim 1, characterized in that, Determining the coverage level of the non-anchor carriers in the multi-carrier configuration includes: Determine the RSRP of the non-anchor carrier; Using the determined RSRP and third information, the coverage level of the non-anchor carriers in the multi-carrier system is determined, whereby the third information characterizes the RSRP threshold of the anchor carriers in the multi-carrier system.

6. The method according to claim 1, characterized in that, Determining the coverage level of the non-anchor carriers in the multi-carrier configuration includes: Determine the RSRP of the anchor carrier in the multi-carrier configuration; The RSRP of the non-anchor carrier is determined using the RSRP of the anchor carrier and the fourth information, wherein the fourth information characterizes the power bias of the non-anchor carrier relative to the anchor carrier. The coverage level of the non-anchor carrier in the multi-carrier system is determined by using the RSRP of the non-anchor carrier and the third information, whereby the third information characterizes the RSRP threshold of the anchor carrier.

7. The method according to claim 1, characterized in that, Determining the coverage level of the non-anchor carriers in the multi-carrier configuration includes: Determine the RSRP of the anchor carrier in the multi-carrier configuration; The RSRP threshold of the non-anchor carrier is determined using third and fourth information, wherein the third information characterizes the RSRP threshold of the anchor carrier and the fourth information characterizes the power bias of the non-anchor carrier relative to the anchor carrier. The coverage level of the non-anchor carriers in the multi-carrier system is determined by using the RSRP threshold of the anchor carrier and the RSRP threshold of the non-anchor carriers.

8. The method according to claim 1, characterized in that, The method further includes: Based on the access probabilities of anchor carriers and non-anchor carriers, a carrier to be accessed is selected from the multiple carriers.

9. The method according to claim 1, characterized in that, The fifth information represents the access probability or access probability offset of the first carrier, and the first carrier includes an anchor carrier. All non-anchor carriers are equally divided among the remaining probabilities, excluding the access probability of the anchor carrier.

10. The method according to claim 1, characterized in that, The fifth information represents the access probability or access probability bias of the first carrier, which includes a non-anchor carrier. In the multi-carrier configuration, all carriers except the first carrier share the remaining probability excluding the access probability of the first carrier. or, The access probability of the first carrier is used as the access probability of the other non-anchor carriers in the multi-carrier array, excluding the first carrier; the remaining probabilities other than the access probabilities of all non-anchor carriers are used as the access probabilities of the anchor carriers.

11. The method according to claim 1, characterized in that, The fifth information represents the access probability or access probability offset of the first carrier, which includes the carrier with the best coverage level or the carrier with the worst coverage level. In the multi-carrier configuration, all carriers except the first carrier share the remaining probability excluding the access probability of the first carrier. or, The access probability of the first carrier is used as the access probability of at least one second carrier with the same coverage level as the first carrier among the multiple carriers; at least one third carrier among the multiple carriers equally shares the remaining probability excluding the access probabilities of the first carrier and at least one second carrier, and the coverage level of the third carrier is different from that of the first carrier. or, In the plurality of carriers, at least one third carrier equally shares the remaining probability excluding the access probability of the first carrier, and the coverage level of the third carrier is different from that of the first carrier.

12. The method according to claim 1, characterized in that, The access probability is increased based on the first access probability, and the updated access probability is used as the access probability of the anchor carrier. All non-anchor carriers are equally divided among the remaining probabilities, excluding the access probability of the anchor carrier.

13. The method according to claim 1, characterized in that, The access probability is reduced based on the second access probability, and the updated access probability is used as the access probability of the first carrier, which includes a non-anchor carrier. In the multi-carrier configuration, the remaining probabilities other than the access probability of the first carrier are equally distributed among the other carriers; or, the access probability of the first carrier is used as the access probability of the other non-anchor carriers in the multi-carrier configuration; and the remaining probabilities other than the access probabilities of all non-anchor carriers are used as the access probabilities of the anchor carriers.

14. The method according to claim 1, characterized in that, The access probability is increased based on the third access probability, and the updated access probability is used as the access probability of the first carrier, which includes the carrier with the best coverage level; or, the access probability is decreased based on the third access probability, and the updated access probability is used as the access probability of the first carrier, which includes the carrier with the worst coverage level. In the multiple carriers, all carriers except the first carrier share the remaining probability excluding the access probability of the first carrier; or, the access probability of the first carrier is used as the access probability of at least one second carrier with the same coverage level as the first carrier in the multiple carriers; in the multiple carriers, at least one third carrier shares the remaining probability excluding the access probabilities of the first carrier and at least one second carrier, and the coverage level of the third carrier is different from that of the first carrier; or, in the multiple carriers, at least one third carrier shares the remaining probability excluding the access probability of the first carrier, and the coverage level of the third carrier is different from that of the first carrier.

15. A method for determining coverage level, characterized in that, Applied to network devices, including: The terminal sends first information and / or second information, wherein the first information represents the RSRP threshold of the non-anchor carrier in the multi-carrier system, and the second information represents the RSRP threshold offset of the non-anchor carrier relative to the anchor carrier. The first information and / or the second information are used by the terminal to determine the coverage level of the non-anchor carrier. The method further includes: The terminal is sent fifth information, which represents the access probability or access probability offset of the anchor carrier and / or non-anchor carrier. The fifth information is used to determine the access probability of the anchor carrier and / or non-anchor carrier when the coverage levels of the anchor carrier and non-anchor carrier are different. The access probability offset is used to determine the access probability.

16. A terminal, characterized in that, include: A first processor and a first communication interface; wherein... The first processor is used to determine the coverage level of non-anchor carriers in a multi-carrier configuration; The first processor is further configured to: determine the access probability of the anchor carrier and / or the non-anchor carrier based on the coverage levels of the anchor carrier and the non-anchor carrier; receive fifth information sent by the network side through the first communication interface, the fifth information representing the access probability or access probability bias of the anchor carrier and / or the non-anchor carrier, the fifth information being used to determine the access probability of the anchor carrier and / or the non-anchor carrier when the coverage levels of the anchor carrier and the non-anchor carrier are different, the access probability bias being used to determine the access probability; and determine the access probability of the anchor carrier and / or the non-anchor carrier using the fifth information when the coverage levels of the anchor carrier and the non-anchor carrier are different.

17. A network device, characterized in that, include: A second processor and a second communication interface; wherein... The second communication interface is used to send first information and / or second information to the terminal. The first information represents the RSRP threshold of the non-anchor carrier in the multi-carrier system, and the second information represents the RSRP threshold offset of the non-anchor carrier relative to the anchor carrier. The first information and / or the second information are used by the terminal to determine the coverage level of the non-anchor carrier. The second communication interface is further configured to send fifth information to the terminal, the fifth information representing the access probability or access probability offset of the anchor carrier and / or non-anchor carrier, the fifth information being used to determine the access probability of the anchor carrier and / or non-anchor carrier when the coverage levels of the anchor carrier and non-anchor carrier are different, and the access probability offset being used to determine the access probability.

18. A terminal, characterized in that, include: A first processor and a first memory for storing computer programs capable of running on the processor. Wherein, when the first processor is used to run the computer program, it performs the steps of the method according to any one of claims 1 to 14.

19. A network device, characterized in that, include: A second processor and a second memory for storing computer programs that can run on the processor. Wherein, when the second processor is used to run the computer program, it performs the steps of the method of claim 15.

20. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 14, or the steps of the method according to claim 15.

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