A cell reselection method, a cell reselection device, and a storage medium

Abstract

The present disclosure relates to a cell reselection method, a cell reselection apparatus, and a storage medium. The cell reselection method includes: determining location information of a terminal, where the location information includes at least one of a distance between the terminal and a cell and a geographical location where the terminal is located; and performing cell reselection according to the location information. Through the present disclosure, it is possible to relatively accurately determine the situation where the terminal is located at the cell edge, so that cell reselection can be performed relatively in a timely manner.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular, to a cell reselection method, a cell reselection device, and a storage medium. Background Art

[0002] In related communication technologies, communication based on terrestrial networks (TN) is supported. When communicating based on terrestrial networks, a terminal mainly performs cell reselection based on the S criterion and the R criterion. For example, when a terminal performs cell reselection, it can measure the service quality of neighboring cells based on the signal quality of the serving cell, sort the measurement results of the neighboring cells based on the R criterion, and perform reselection of the target cell based on the measurement results and the sorting results.

[0003] For a TN network, a terminal can determine that the terminal is at the cell edge by the obvious difference between the reference signal received power (RSRP) it measures and the RSRP at the cell center, so as to perform neighbor cell measurement and cell reselection.

[0004] In the new generation of communication technologies, non-terrestrial networks (NTN) are introduced. For an NTN network, communication is based on satellites. Since the near-far effect of the NTN network is not as obvious as the signal near-far effect of the TN network. Therefore, for an NTN network, when the satellite moves or the terminal moves, resulting in the terminal needing to perform cell reselection, it is impossible to determine in a timely and accurate manner whether the terminal is at the cell edge and neighbor cell measurement needs to be performed, which may cause too late cell reselection and reselection back and forth between different cells. Summary of the Invention

[0005] To overcome the problems existing in the related technologies, the present disclosure provides a cell reselection method, a cell reselection device, and a storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, a cell reselection method is provided, which is applied to a terminal. The cell reselection method includes:

[0007] Determine the location information of the terminal, where the location information includes at least one of the distance between the terminal and the cell and the geographical location where the terminal is located; perform cell reselection according to the location information.

[0008] In one implementation, performing cell reselection according to the location information includes: measuring neighboring cells.

[0009] In one implementation, the measuring of neighboring cells includes:

[0010] Measure the neighboring cell in response to the frequency priority of the neighboring cell being higher than that of the serving cell.

[0011] In one implementation, the measuring of the neighboring cell includes:

[0012] Measure the neighboring cell based on the location information.

[0013] In one implementation, the cell reselection method further includes:

[0014] Receive a first message sent by a network device, where the first message is used to indicate parameter information for the terminal to perform cell reselection based on location information.

[0015] In one implementation, the location information includes the distance between the terminal and the serving cell, and the first message is used to indicate a distance threshold.

[0016] The measuring of the neighboring cell based on the location information includes:

[0017] In response to the frequency priority of the neighboring cell being lower than that of the serving cell, or the frequency of the neighboring cell being the same as that of the serving cell, measure the neighboring cell when the distance between the terminal and the serving cell is greater than the distance threshold.

[0018] In one implementation, the location information includes the distance between the terminal and the serving cell, and the first message is used to indicate a distance threshold.

[0019] The measuring of the neighboring cell based on the location information includes:

[0020] In response to the frequency priority of the neighboring cell being lower than that of the serving cell, or the frequency of the neighboring cell being the same as that of the serving cell, measure the neighboring cell when the distance between the terminal and the serving cell is greater than the distance threshold and the serving cell selection level is less than or equal to the reference signal received power signal level threshold for starting co-frequency measurement.

[0021] In one implementation, the location information includes the geographical location where the terminal is located, and the first message is used to indicate a geographical location range.

[0022] The measuring of the neighboring cell based on the location information includes:

[0023] In response to the frequency priority of the neighboring cell being lower than that of the serving cell, or the frequency of the neighboring cell being the same as that of the serving cell, measure the neighboring cell when the geographical location where the terminal is located is within the geographical location range.

[0024] In one embodiment, the location information includes the geographical location where the terminal is located, and the first message is used to indicate a geographical location range.

[0025] Performing measurements on neighboring cells based on the location information includes:

[0026] In response to the frequency priority of a neighboring cell being lower than that of the serving cell, or the frequency of the neighboring cell being the same as that of the serving cell, when the geographical location where the terminal is located is within the geographical location range and the cell selection level is less than or equal to the reference signal received power signal level threshold for starting co-frequency measurement, it is determined to perform measurements on the neighboring cell.

[0027] In one embodiment, performing cell reselection according to the location information includes:

[0028] Determining a target cell according to the location information.

[0029] In one embodiment, the location information includes the distance between the terminal and the target cell.

[0030] The determining of the target cell according to the location information includes at least one of the following:

[0031] Determining the distances between the terminal and multiple cells, and taking the cell with the smallest distance among the multiple distances as the target cell;

[0032] Determining the distances between the terminal and multiple cells, and respectively determining the ratios of each of the multiple distances to the corresponding cell coverage radius, and taking the cell with the smallest ratio among the multiple ratios as the target cell.

[0033] In one embodiment, the location information includes the distance between the terminal and the target cell.

[0034] The determining of the target cell according to the location information includes at least one of the following:

[0035] Determining N cells according to the R criterion for cell reselection, and selecting the cell with the smallest distance from the terminal among the N cells as the target cell;

[0036] Determining N cells according to the R criterion for cell reselection, and selecting the cell with the smallest ratio as the target cell, where the ratio is the ratio of the distance between the terminal and the cell to the cell coverage radius.

[0037] In one embodiment, the N cells determined according to the R criterion for cell reselection satisfy one of the following conditions:

[0038] The cell selection level is greater than 0 and the cell selection quality of the cell is greater than 0; the distance between the terminal and the cell is less than the distance threshold, or the ratio of the distance between the terminal and the cell to the cell coverage radius is less than the ratio threshold; the distance between the terminal and the cell is less than the distance threshold, or the ratio of the distance between the terminal and the cell to the cell coverage radius is less than the ratio threshold, and the cell selection level is greater than 0 and the cell selection quality of the cell is greater than 0.

[0039] In one implementation, the cell reselection method further includes: reselecting to the target cell.

[0040] In one implementation, determining the target cell according to the location information includes at least one of the following:

[0041] Selecting the cell closest to the terminal as the target cell; selecting the cell closest to the terminal as the target cell among the cells that meet the S criterion for cell reselection.

[0042] In one implementation, receiving the first message sent by the network device includes:

[0043] Receiving the first message sent by the network device based on the system message and / or the radio resource control release message.

[0044] According to the second aspect of the embodiments of the present disclosure, there is provided a cell reselection method applied to a network device. The cell reselection method includes:

[0045] Sending a first message, where the first message is used to indicate parameter information for cell reselection based on location information; the location information includes at least one of the distance between the terminal and the cell and the geographical location where the terminal is located.

[0046] In one implementation, the first message is used to indicate at least one of the distance threshold and the geographical location range.

[0047] In one implementation, sending the first message includes: sending the first message based on the system message and / or the radio resource control release message.

[0048] According to the third aspect of the embodiments of the present disclosure, there is provided a cell reselection apparatus. The cell reselection apparatus includes:

[0049] A processing unit configured to determine the location information of the terminal, where the location information includes at least one of the distance between the terminal and the cell and the geographical location where the terminal is located, and perform cell reselection according to the location information.

[0050] In one implementation, the processing unit is configured to measure neighboring cells.

[0051] In one implementation, in response to the frequency priority of a neighboring cell being higher than that of the serving cell, the processing unit measures the neighboring cell.

[0052] In one implementation, the processing unit measures the neighboring cell based on the location information.

[0053] In one implementation, the cell reselection device further includes a receiving unit configured to receive a first message sent by a network device, where the first message is used to indicate parameter information for the terminal to perform cell reselection based on location information.

[0054] In one implementation, the location information includes the distance between the terminal and the serving cell, and the first message is used to indicate a distance threshold.

[0055] In response to the frequency priority of the neighboring cell being lower than that of the serving cell, or the frequency of the neighboring cell being the same as that of the serving cell, and when the distance between the terminal and the serving cell is greater than the distance threshold, the processing unit measures the neighboring cell.

[0056] In one implementation, the location information includes the distance between the terminal and the serving cell, and the first message is used to indicate a distance threshold. In response to the frequency priority of the neighboring cell being lower than that of the serving cell, or the frequency of the neighboring cell being the same as that of the serving cell, and when the distance between the terminal and the serving cell is greater than the distance threshold and the serving cell selection level is less than or equal to the reference signal received power signal level threshold for starting co-frequency measurement, the processing unit measures the neighboring cell.

[0057] In one implementation, the location information includes the geographical location where the terminal is located, and the first message is used to indicate a geographical location range. In response to the frequency priority of the neighboring cell being lower than that of the serving cell, or the frequency of the neighboring cell being the same as that of the serving cell, and when the geographical location where the terminal is located is within the geographical location range, the processing unit measures the neighboring cell.

[0058] In one implementation, the location information includes the geographical location where the terminal is located, and the first message is used to indicate a geographical location range. In response to the frequency priority of the neighboring cell being lower than that of the serving cell, or the frequency of the neighboring cell being the same as that of the serving cell, and when the geographical location where the terminal is located is within the geographical location range and the serving cell selection level is less than or equal to the reference signal received power signal level threshold for starting co-frequency measurement, the processing unit measures the neighboring cell.

[0059] In one implementation, the processing unit determines a target cell according to the location information.

[0060] In one implementation, the location information includes the distance between the terminal and the target cell.

[0061] Determining the target cell according to the location information includes at least one of the following:

[0062] Determining the distances between the terminal and multiple cells, and taking the cell with the minimum distance among the multiple distances as the target cell;

[0063] Determining the distances between the terminal and multiple cells, respectively determining the ratios of each distance among the multiple distances to the corresponding cell coverage radius, and taking the cell with the minimum ratio among the multiple ratios as the target cell.

[0064] In one implementation, the location information includes the distance between the terminal and the target cell.

[0065] Determining the target cell according to the location information includes at least one of the following:

[0066] Determining N cells according to the R criterion for cell reselection, and selecting the cell with the minimum distance from the terminal among the N cells as the target cell;

[0067] Determining N cells according to the R criterion for cell reselection, and selecting the cell with the minimum ratio as the target cell, where the ratio is the ratio of the distance between the terminal and the cell to the cell coverage radius.

[0068] In one implementation, the N cells determined according to the R criterion for cell reselection satisfy one of the following conditions:

[0069] The cell selection level is greater than 0 and the cell selection quality of the cell is greater than 0; the distance between the terminal and the cell is less than the distance threshold, or the ratio of the distance between the terminal and the cell to the cell coverage radius is less than the ratio threshold; the distance between the terminal and the cell is less than the distance threshold, or the ratio of the distance between the terminal and the cell to the cell coverage radius is less than the ratio threshold, and the cell selection level is greater than 0, and the cell selection quality of the cell is greater than 0.

[0070] In one implementation, the processing unit is further configured to: reselect to the target cell.

[0071] In one implementation, determining the target cell according to the location information includes at least one of the following:

[0072] Selecting the cell closest to the terminal as the target cell; selecting the cell closest to the terminal as the target cell among the cells that satisfy the S criterion for cell reselection.

[0073] In one implementation, the receiving unit receives a first message sent by a network device based on a system message and / or a radio resource control release message.

[0074] According to a fourth aspect of the embodiments of the present disclosure, there is provided a cell reselection apparatus, the cell reselection apparatus comprising:

[0075] A sending unit, configured to send a first message, where the first message is used to indicate parameter information for cell reselection based on location information, and the location information includes at least one of a distance between a terminal and a cell and a geographical location where the terminal is located.

[0076] In one implementation, the first message is used to indicate at least one of a distance threshold value and a geographical location range.

[0077] In one implementation, the sending unit sends the first message based on a system message and / or a radio resource control release message.

[0078] According to a fifth aspect of the embodiments of the present disclosure, there is provided a cell reselection apparatus, comprising:

[0079] A processor; a memory for storing instructions executable by the processor;

[0080] Wherein, the processor is configured to: execute the cell reselection method described in the first aspect or any one of the implementations of the first aspect.

[0081] According to a sixth aspect of the embodiments of the present disclosure, there is provided a cell reselection apparatus, comprising:

[0082] A processor; a memory for storing instructions executable by the processor;

[0083] Wherein, the processor is configured to: execute the cell reselection method described in the second aspect or any one of the implementations of the second aspect.

[0084] According to a seventh aspect of the embodiments of the present disclosure, there is provided a storage medium, where instructions are stored in the storage medium, and when the instructions in the storage medium are executed by a processor of a terminal, the terminal is enabled to execute the cell reselection method described in the first aspect or any one of the implementations of the first aspect.

[0085] According to an eighth aspect of the embodiments of the present disclosure, there is provided a storage medium, where instructions are stored in the storage medium, and when the instructions in the storage medium are executed by a processor of a network device, the network device is enabled to execute the cell reselection method described in the second aspect or any one of the implementations of the second aspect.

[0086] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects: The terminal determines the location information of the terminal and uses the location information of the terminal for cell reselection. The location information includes at least one of the distance between the terminal and the cell and the geographical location where the terminal is located, and the situation where the terminal is located at the cell edge can be determined relatively accurately, so cell reselection can be performed relatively in a timely manner.

[0087] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0088] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0089] Figure 1 is a schematic diagram of a wireless communication system shown according to an exemplary embodiment.

[0090] Figure 2A shows the network architecture of the TN network and the near-far effect schematic diagram in an exemplary embodiment of the present disclosure.

[0091] Figure 2B shows the network architecture of the NTN network and the near-far effect schematic diagram in an exemplary embodiment of the present disclosure.

[0092] Figure 3 is a flowchart of a cell reselection method shown according to an exemplary embodiment.

[0093] Figure 4 is a flowchart of a cell reselection method shown according to an exemplary embodiment.

[0094] Figure 5 is a flowchart of a cell reselection method shown according to an exemplary embodiment.

[0095] Figure 6 is a flowchart of a cell reselection method shown according to an exemplary embodiment.

[0096] Figure 7 is a flowchart of a cell reselection method shown according to an exemplary embodiment.

[0097] Figure 8 is a flowchart of a cell reselection method shown according to an exemplary embodiment.

[0098] Figure 9 is a flowchart of a cell reselection method shown according to an exemplary embodiment.

[0099] Figure 10It is a flowchart of a cell reselection method shown according to an exemplary embodiment.

[0100] Figure 11 It is a flowchart of a cell reselection method shown according to an exemplary embodiment.

[0101] Figure 12 It is a flowchart of a cell reselection method shown according to an exemplary embodiment.

[0102] Figure 13 It is a flowchart of a cell reselection method shown according to an exemplary embodiment.

[0103] Figure 14 It is a flowchart of a cell reselection method shown according to an exemplary embodiment.

[0104] Figure 15 It is a block diagram of a cell reselection apparatus shown according to an exemplary embodiment.

[0105] Figure 16 It is a block diagram of a cell reselection apparatus shown according to an exemplary embodiment.

[0106] Figure 17 It is a block diagram of an apparatus for cell reselection shown according to an exemplary embodiment.

[0107] Figure 18 It is a block diagram of an apparatus for cell reselection shown according to an exemplary embodiment. Detailed implementation manners

[0108] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0109] The cell reselection method provided by the embodiments of the present disclosure can be applied to Figure 1 the wireless communication system shown. Refer to Figure 1 shown. In this wireless communication system, there are a terminal and a network device. Information is sent and received between the terminal and the network device through wireless resources.

[0110] It can be understood that Figure 1 the wireless communication system shown is only for illustrative purposes. The wireless communication system may also include other network devices. For example, it may also include core network devices, wireless relay devices, and wireless backhaul devices, etc. In Figure 1It is not shown in the figure. The embodiments of the present disclosure do not limit the number of network devices and the number of terminals included in the wireless communication system.

[0111] Furthermore, it can be further understood that the wireless communication system of the embodiments of the present disclosure is a network that provides wireless communication functions. The wireless communication system can adopt different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single Carrier FDMA (SC-FDMA), Carrier Sense Multiple Access with Collision Avoidance. According to factors such as the capacity, rate, and latency of different networks, the network can be divided into 2G (generation) networks, 3G networks, 4G networks, or future evolved networks, such as 5G networks. 5G networks can also be referred to as New Radio (NR). For the convenience of description, the wireless communication network is sometimes simply referred to as a network in the present disclosure.

[0112] Furthermore, the network device involved in the present disclosure can also be referred to as a radio access network device. The radio access network device can be: a base station, an evolved node B (eNB), a home base station, an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a transmission and reception point (TRP), etc. It can also be a gNB in an NR system, or it can also be a component or part of a device that constitutes a base station. When it is a vehicle-to-everything (V2X) communication system, the network device can also be an in-vehicle device. It should be understood that in the embodiments of the present disclosure, the specific technologies and specific device forms adopted by the network device are not limited.

[0113] Further, the terminal involved in the present disclosure may also be referred to as a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. It is a device that provides voice and / or data connectivity to users. For example, the terminal can be a handheld device with wireless connection capabilities, a vehicle-mounted device, etc. Currently, some examples of terminals are: smartphones, pocket personal computers (PPCs), palm computers, personal digital assistants (PDAs), laptops, tablets, wearable devices, or vehicle-mounted devices, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be a vehicle-mounted device. It should be understood that the specific technologies and specific device forms adopted by the terminal in the embodiments of the present disclosure are not limited.

[0114] During the communication process between the terminal and the network device, cell selection or reselection will be performed. The embodiments of the present disclosure are mainly applicable to the process of cell selection or reselection. In related technologies, for example, in 5G NR, the S criterion and the R criterion are involved in cell selection or reselection.

[0115] Among them, the S criterion mainly refers to S rxlev > 0 and S qual > 0. Among them, S rxlev is the cell selection level, and S qual is the cell selection quality. The cell selected or reselected by the terminal needs to meet the S criterion.

[0116] Among them, according to the above S criterion, the terminal determines when to measure neighboring cells, and the specific rules are as follows:

[0117] For the measurement of co-frequency neighboring cells, if the serving cell satisfies S rxlev > S IntraSearchP , then the terminal can choose not to measure the neighboring cell. Conversely, the terminal needs to measure the neighboring cell. Among them, S IntraSearchP is the RSRP signal level threshold for starting co-frequency measurement.

[0118] For the measurement of inter-frequency neighboring cells, if the frequency priority of the neighboring cell is less than or equal to the frequency priority of the serving cell, then if the S of the serving cell rxlev > S nonIntraSearchP , then the terminal can choose not to measure the neighboring cell. Conversely, the terminal needs to measure the neighboring cell. Among them, S nonIntraSearchP is the RSRP signal level threshold for starting inter-frequency measurement.

[0119] Among them, the R criterion mainly refers to:

[0120] Rs = Q meas,s +Q hyst –Q offsettemp ,Rn = Q meas,n -Q offset -Q offsettemp

[0121] Among them, Rs is the R value of the serving cell, Rn is the R value of the neighboring cell, Q meas,s is the RSRP measurement value of the serving cell, Q meas,n is the RSRP measurement value of the neighboring cell, Q hyst is the cell reselection hysteresis value, Q offsettemp is the temporary offset value; Q offset is the offset value.

[0122] When the terminal measures the neighboring cell, it will calculate the R value of each cell according to the above R criterion, and the terminal only performs R criterion sorting on the neighboring cells that meet the S criterion.

[0123] The above method of cell reselection based on the S criterion and the R criterion is mainly applicable to the TN network. However, with the development of communication technology, the NTN network has been introduced. The network characteristics of the NTN network are based on satellites and have a large communication cell radius. There are obvious differences between the NTN network and the TN network in terms of the near-far effect. Figure 2A Shows the network architecture and the near-far effect schematic diagram of the TN network in an exemplary embodiment of the present disclosure. Figure 2B Shows the network architecture and the near-far effect schematic diagram of the NTN network in an exemplary embodiment of the present disclosure. Refer to Figure 2A and Figure 2B It can be seen that based on the position of the terminal relative to the cell, there can be a far-end terminal (Far-UE) or a near-end terminal (Near-UE). Among them, the far-end terminal can be understood as a terminal located at the cell edge. The near-end terminal can be understood as a terminal located within the cell. Further, the corresponding relationship between the received signal strength of the terminal and the distance between the terminal and the cell can reflect the near-far effect. Refer to Figure 2A and Figure 2BIt can be seen that the near-far effect of the NTN network is not as obvious as that of the signal near-far effect of the TN network. Moreover, for the NTN network with a large cell radius, whether the terminal is at the cell center or the cell edge, the difference in its RSRP or reference signal received quality (RSRQ) is small, and the large cell radius results in a large cell overlap area. Therefore, for the TN network, the terminal can determine that it is at the cell edge through the obvious difference between the measured RSRP and the RSRP at the cell center, and then perform neighbor cell measurement and cell reselection. However, for the NTN network, when the satellite moves or the terminal moves to a position where the terminal needs to perform cell reselection, there is no obvious near-far benefit like the TN network. Performing cell reselection based on the S criterion and the R criterion may cause too late cell reselection, and may also cause the terminal to perform cell reselection between two cells back and forth.

[0124] Therefore, for the NTN network, due to its network characteristics, the method of performing cell reselection based on the S criterion and the R criterion cannot well solve the problems encountered by the terminal when performing cell selection or reselection in the NTN network.

[0125] The embodiments of the present disclosure provide a cell reselection method. In this cell reselection method, the terminal can perform cell selection or reselection based on the position information of the terminal. For example, when the terminal determines that it is located at the geographical cell edge, it performs cell reselection.

[0126] In one implementation manner, when the terminal in the embodiments of the present disclosure performs cell selection or reselection based on the position information of the terminal, it can determine to trigger the terminal to measure or not measure the neighboring cell.

[0127] Among them, the terminal's measurement of the neighboring cell may include obtaining the neighboring cell identifier (ID), obtaining the cell system message, measuring the cell signal quality, etc., one or several of them.

[0128] In another implementation manner, when performing cell selection or reselection based on the position information of the terminal in the embodiments of the present disclosure, the target cell can be determined.

[0129] Figure 3 It is a flowchart of a cell reselection method shown according to an exemplary embodiment. As Figure 3 shown, the cell reselection method can be executed by the terminal and includes the following steps.

[0130] In step S11, determine the position information of the terminal.

[0131] The location information involved in the embodiments of the present disclosure includes at least one of the distance between the terminal and the cell, and the geographical location where the terminal is located. Among them, the distance between the terminal and the cell may include the distance between the terminal and the satellite corresponding to the cell, or may also include the distance between the terminal and the center of the serving cell, or may also include the distance between the terminal and the center of the target cell.

[0132] In step S12, cell reselection is performed according to the location information of the terminal.

[0133] In the embodiments of the present disclosure, the terminal performing cell reselection according to the location information of the terminal may include the terminal determining whether to measure a neighboring cell, that is, determining to measure the neighboring cell, or determining not to measure the neighboring cell.

[0134] Among them, when the terminal determines to measure the neighboring cell, it can be understood as an implementation process of the terminal performing cell reselection.

[0135] Figure 4 It is a flowchart of a cell reselection method shown according to an exemplary embodiment. As Figure 4 shown, the cell reselection method can be executed by the terminal. Among them, performing cell reselection according to the location information of the terminal includes the following steps.

[0136] In step S21, measure the neighboring cell.

[0137] In one implementation manner, in the cell reselection method provided by the embodiments of the present disclosure, when performing cell reselection according to the location information of the terminal, the neighboring cell can be measured according to the frequency priority of the neighboring cell and the frequency priority of the serving cell.

[0138] In another implementation manner, in the cell reselection method provided by the embodiments of the present disclosure, when performing cell reselection according to the location information of the terminal, it can be determined not to measure the neighboring cell according to the frequency priority of the neighboring cell and the frequency priority of the serving cell.

[0139] Among them, the frequency priority of the neighboring cell and the frequency priority of the serving cell can be configured by the network device for the terminal.

[0140] In one implementation manner, in the embodiments of the present disclosure, when performing cell reselection according to the location information of the terminal, if the frequency priority of the neighboring cell is higher than the frequency priority of the serving cell, it can be determined to measure the neighboring cell.

[0141] Figure 5 It is a flowchart of a cell reselection method shown according to an exemplary embodiment. As Figure 5 shown, the cell reselection method can be executed by the terminal, including the following steps.

[0142] In step S31, in response to the frequency priority of the neighboring cell being higher than that of the serving cell, measure the neighboring cell.

[0143] In the embodiments of the present disclosure, when determining whether to measure a neighboring cell according to the frequency priority of the neighboring cell and the frequency priority of the serving cell, if it is determined that the frequency priority of the neighboring cell is higher than that of the serving cell, it is determined that the neighboring cell needs to be measured without considering other conditions. Other conditions for determining whether to measure a neighboring cell may be, for example, the location information of the terminal, etc.

[0144] In the cell reselection method provided by the embodiments of the present disclosure, in one implementation manner, it may be determined whether to measure a neighboring cell based on the location information of the terminal.

[0145] Figure 6 is a flowchart of a cell reselection method shown according to an exemplary embodiment. As Figure 6 shown, the cell reselection method may be executed by a terminal and includes the following steps.

[0146] In step S41, measure the neighboring cell based on the location information of the terminal.

[0147] In the embodiments of the present disclosure, when determining to measure a neighboring cell or determining not to measure a neighboring cell based on the location information of the terminal, on the one hand, it may be based on the distance between the terminal and the cell to determine to measure the neighboring cell. Or it is determined not to measure the neighboring cell based on the distance between the terminal and the cell. For example, it may be based on the distance between the terminal and the serving cell to measure the neighboring cell. Or it is determined not to measure the neighboring cell based on the distance between the terminal and the serving cell.

[0148] On the other hand, the terminal may be based on the geographical location where the terminal is located to determine to measure the neighboring cell. Or it is determined not to measure the neighboring cell based on the geographical location where the terminal is located. For example, it may be determined to measure the neighboring cell when it is determined that the geographical location where the terminal is located is within the geographical range for cell measurement. When it is determined that the geographical location where the terminal is located is not within the geographical range for cell measurement, it is determined not to measure the neighboring cell.

[0149] In the cell reselection method provided by the embodiments of the present disclosure, the network device may send parameter information for instructing the terminal to perform cell reselection based on location information to the terminal. The terminal performs cell reselection based on the parameter information sent by the network device and based on the parameter information and the location information of the terminal. For example, measure the neighboring cell or not measure the neighboring cell.

[0150] Figure 7 is a flowchart of a cell reselection method shown according to an exemplary embodiment. As Figure 7As shown, the cell reselection method can be performed by a network device and includes the following steps.

[0151] In step S51, receive a first message sent by the network device.

[0152] The first message is used to indicate parameter information for the terminal to perform cell reselection based on location information.

[0153] In the embodiments of the present disclosure, the parameter information for indicating the terminal to perform cell reselection based on location information may include at least one of the following: the frequency of the neighboring cell, the frequency of the serving cell, the frequency priority of the neighboring cell, the frequency priority of the serving cell, the distance threshold, and the geographical location range.

[0154] Among them, the terminal can receive the first message sent by the network device based on the system message and / or the Radio Resource Control (RRC) release message.

[0155] In the cell reselection method provided by the embodiments of the present disclosure, in one implementation, it is possible to determine whether to measure the neighboring cell based on the frequency of the neighboring cell, the frequency of the serving cell, the frequency priority of the neighboring cell, the frequency priority of the serving cell, and the location information of the terminal.

[0156] In one implementation, in the embodiments of the present disclosure, it is possible to determine whether to measure the neighboring cell based on the location information of the terminal when it is determined that the frequency priority of the neighboring cell is lower than that of the serving cell.

[0157] In another implementation, in the cell reselection method provided by the embodiments of the present disclosure, when it is determined that the frequency of the neighboring cell is the same as that of the serving cell, it is determined whether to measure the neighboring cell based on the location information of the terminal.

[0158] In the embodiments of the present disclosure, when determining whether to measure the neighboring cell based on the location information of the terminal, it may be determined whether to measure the neighboring cell based on the distance between the terminal and the serving cell.

[0159] In one implementation, the network device can indicate the distance threshold for cell measurement to the terminal through the first message. The terminal receives the distance threshold sent by the network device. The terminal determines whether to measure the neighboring cell based on the distance between the terminal and the serving cell and the distance threshold.

[0160] In another implementation, the network device may indicate, via a first message, a distance threshold value for cell measurement, the frequency priority of neighboring cells, and the frequency priority of the serving cell to the terminal. The terminal receives the distance threshold value, the frequency priority of neighboring cells, and the frequency priority of the serving cell sent by the network device. The terminal determines whether to measure neighboring cells based on the distance between the terminal and the serving cell, the distance threshold value, the frequency priority of neighboring cells, and the frequency priority of the serving cell.

[0161] In yet another implementation, the network device may indicate, via a first message, a distance threshold value for cell measurement to the terminal. The terminal receives the distance threshold value sent by the network device, the frequency of neighboring cells, and the frequency of the serving cell. The terminal determines whether to measure neighboring cells based on the distance between the terminal and the serving cell, the distance threshold value, the frequency of neighboring cells, and the frequency of the serving cell.

[0162] Figure 8 It is a flowchart of a cell reselection method shown according to an exemplary embodiment. As Figure 8 shown, the cell reselection method may be executed by a terminal and includes the following steps.

[0163] In step S61, in response to the frequency priority of a neighboring cell being lower than that of the serving cell, or the frequency of the neighboring cell being the same as that of the serving cell, when the distance between the terminal and the serving cell is greater than the distance threshold value, and the serving cell selection level is less than or equal to the reference signal reception power signal level threshold value for starting co-frequency measurement, measure the neighboring cell.

[0164] In one example, when the terminal determines whether to measure a neighboring cell based on the distance between the terminal and the serving cell, the network device provides the terminal with a distance threshold value Rx. Among them, the network device may send Rx to the terminal via a system message and / or an RRC release message.

[0165] Assume that the distance between the terminal and the serving cell is R. Among them, R may be the distance between the terminal and the satellite corresponding to the serving cell, or the distance between the terminal and the center of the serving cell;

[0166] On the one hand, if the frequency priority of the neighboring cell is lower than that of the serving cell, or the frequency of the neighboring cell is the same as that of the serving cell, the condition for the terminal to measure the neighboring cell is R>Rx. That is, when R>Rx, the terminal measures the neighboring cell. It can be understood that at this time, when the terminal performs neighboring cell measurement, it is not required that the serving cell satisfies S rxlev <=S IntraSearchP .

[0167] On the other hand, if the frequency priority of the neighboring cell is lower than that of the serving cell, or the frequency of the neighboring cell is the same as that of the serving cell, the condition for the terminal to measure the neighboring cell is R > Rx, and the serving cell does not satisfy S IntraSearchP . That is, when R > Rx and S rxlev <= S IntraSearchP , the terminal measures the neighboring cell.

[0168] On the other hand, if the frequency priority of the neighboring cell is higher than that of the serving cell, the terminal ignores the distance threshold provided by the network device and always measures the neighboring cell.

[0169] In the embodiments of the present disclosure, when determining whether to measure a neighboring cell based on the location information of the terminal, it may be determined whether to measure the neighboring cell based on the geographical location where the terminal is located.

[0170] In one implementation, the network device may indicate to the terminal, through a first message, the geographical location range for performing cell measurement. The terminal receives the geographical location range sent by the network device. The terminal determines whether to measure the neighboring cell based on the geographical location where the terminal is located and the geographical location range.

[0171] In another implementation, the network device may indicate to the terminal, through a first message, the geographical location range for performing cell measurement, the frequency priority of the neighboring cell, and the frequency priority of the serving cell. The terminal receives the geographical location range, the frequency priority of the neighboring cell, and the frequency priority of the serving cell sent by the network device. The terminal determines whether to measure the neighboring cell based on the geographical location where the terminal is located, the geographical location range, the frequency priority of the neighboring cell, and the frequency priority of the serving cell.

[0172] In yet another implementation, the network device may indicate to the terminal, through a first message, the geographical location range for performing cell measurement, the frequency of the neighboring cell, and the frequency of the serving cell. The terminal receives the geographical location range, the frequency of the neighboring cell, and the frequency of the serving cell sent by the network device. The terminal determines whether to measure the neighboring cell based on the geographical location where the terminal is located, the geographical location range, the frequency of the neighboring cell, and the frequency of the serving cell.

[0173] Figure 9 is a flowchart of a cell reselection method shown according to an exemplary embodiment. As Figure 9 shown, the cell reselection method may be executed by a terminal and includes the following steps.

[0174] In step S71, in response to the frequency priority of the neighboring cell being lower than the frequency priority of the serving cell, or the frequency of the neighboring cell being the same as the frequency of the serving cell, and when the geographical location where the terminal is located is within the geographical location range, the terminal measures the neighboring cell.

[0175] In one example, when the terminal determines whether to measure a neighboring cell based on the distance between the terminal and the serving cell, the network device provides the terminal with geographical location range information. Among them, the network device can send the geographical location range information to the terminal through a system message and / or an RRC release message.

[0176] On the one hand, if the frequency priority of the neighboring cell is lower than that of the serving cell, or the frequency of the neighboring cell is the same as that of the serving cell, and the geographical location where the terminal is located is within the geographical location range, the terminal measures the neighboring cell.

[0177] On the other hand, if the frequency priority of the neighboring cell is lower than that of the serving cell, or the frequency of the neighboring cell is the same as that of the serving cell, and the geographical location where the terminal is located is within the geographical location range, and the serving cell does not meet S rxlev >S IntraSearchP . That is, when S rxlev <=S IntraSearchP , the terminal measures the neighboring cell.

[0178] On the other hand, if the frequency priority of the neighboring cell is higher than that of the serving cell, the terminal ignores the geographical range information provided by the network device and always measures the neighboring cell.

[0179] In a cell reselection method provided by an embodiment of the present disclosure, the neighboring cell can be measured based on the level of the serving cell.

[0180] Among them, different levels of the serving cell will correspond to different frequency priorities. For the measurement of co-frequency neighboring cells, if the S of the serving cell rxlev >S IntraSearchP , the terminal can choose not to measure the neighboring cell. Conversely, the terminal needs to measure the neighboring cell. For the measurement of different-frequency neighboring cells, if the frequency priority of the neighboring cell is less than or equal to the frequency priority of the serving cell, then if the S of the serving cell rxlev >S nonIntraSearchP , the terminal can choose not to measure the neighboring cell. Conversely, the terminal needs to measure the neighboring cell.

[0181] In the cell reselection method provided by an embodiment of the present disclosure, during the process of the terminal performing cell reselection based on the position information of the terminal, it may include the terminal determining a target cell according to the position information, that is, the terminal can perform the selection of the target cell.

[0182] Figure 10 FIG. is a flowchart of a cell reselection method shown according to an exemplary embodiment. As Figure 10 shown, the cell reselection method can be executed by a terminal and includes the following steps.

[0183] In step S81, a target cell is determined according to the location information of the terminal.

[0184] In the embodiments of the present disclosure, when the terminal determines the target cell according to the location information, at least one of the following methods may be adopted:

[0185] Method 1: Determine the target cell according to the distance between the terminal and the cell (target cell).

[0186] Method 2: Determine the target cell according to the R criterion.

[0187] Method 3: Determine the target cell according to the R criterion and the distance between the terminal and the target cell.

[0188] In one implementation manner of the embodiments of the present disclosure, when the terminal determines the target cell according to the location information, the terminal may determine the target cell according to the distance between the terminal and the cell (target cell).

[0189] Figure 11 It is a flowchart of a cell reselection method shown according to an exemplary embodiment. As Figure 11 shown, the cell reselection method may be executed by the terminal and includes the following steps.

[0190] In step S91, the target cell is determined according to the distance between the terminal and the target cell.

[0191] In one implementation manner, in the embodiments of the present disclosure, the terminal determines the target cell according to the distance between the terminal and the target cell, including at least one of the following methods:

[0192] Method 1: The terminal determines the distances between the terminal and multiple cells, and takes the cell with the smallest distance among the multiple distances as the target cell. That is, the terminal may calculate the distances between the terminal and multiple target cells, and then select the cell with the smallest distance as the target cell.

[0193] Method 2: The terminal determines the distances between the terminal and multiple cells, and respectively determines the ratios of each of the multiple distances to the corresponding cell coverage radius, and takes the cell with the smallest ratio among the multiple ratios as the target cell. That is, the terminal calculates the distances from the terminal to multiple target cells and the ratios of the distances to the cell coverage radius, and the terminal selects the cell with the smallest ratio as the target cell.

[0194] In another implementation manner, in the embodiments of the present disclosure, the terminal may determine the target cell according to the R criterion.

[0195] In yet another implementation manner, in the embodiments of the present disclosure, the terminal may determine the target cell according to the R criterion and the distance between the terminal and the target cell.

[0196] Figure 12is a flowchart of a cell reselection method shown according to an exemplary embodiment. As Figure 12 shown, the cell reselection method can be executed by a terminal and includes the following steps.

[0197] In step S101, according to the R criterion and the distance between the terminal and the target cell, the target cell is determined.

[0198] Among them, the terminal determines the target cell according to the R criterion and the distance between the terminal and the target cell, including at least one of the following methods:

[0199] Method 1: According to the R criterion for cell reselection, N cells are determined, and among the N cells, the cell with the smallest distance from the terminal is selected as the target cell. That is, the terminal selects N cells according to the R criterion, and then selects the cell with the smallest distance from the terminal among the N cells as the target cell.

[0200] Method 2: According to the R criterion for cell reselection, N cells are determined, and among the N cells, the cell with the smallest ratio is selected as the target cell, where the ratio is the ratio of the distance between the terminal and the cell to the cell coverage radius. That is, N cells are selected according to the R criterion, the terminal then determines the ratio of the distance from the terminal to the N cells to the cell coverage radius, and the terminal selects the cell with the smallest ratio as the target cell.

[0201] In the cell reselection method provided by the embodiments of the present disclosure, the N cells determined according to the R criterion for cell reselection need to meet one of the following conditions:

[0202] (1) The cell selection level of the cell is greater than 0 and the cell selection quality of the cell is greater than 0. That is, the terminal determines N cells according to the existing R criterion. That is, when the terminal selects a target cell to calculate the R value, the target cell must satisfy S rxlev >0 and S qual >0.

[0203] (2) The distance between the terminal and the cell is less than the distance threshold, or the ratio of the distance between the terminal and the cell to the cell coverage radius is less than the ratio threshold. That is, when the terminal selects a target cell based on the R criterion and calculates the R value, the target cell must satisfy that the distance between the terminal and the target cell is less than the threshold. Among them, the threshold is configured by the network device to the terminal. Or the ratio of the distance of the target cell to the cell coverage radius is less than the threshold. Among them, the threshold is configured by the network device to the terminal.

[0204] (3) The distance between the terminal and the cell is less than the distance threshold, or the ratio of the distance between the terminal and the cell to the cell coverage radius is less than the ratio threshold, and the cell selection level of the cell is greater than 0, and the cell selection quality of the cell is greater than 0. That is, when the terminal performs target cell selection, the target cell must satisfy that the distance between the terminal and the target cell is less than the threshold or the ratio of the distance of the target cell to the cell coverage radius is less than the threshold, and the target cell must satisfy S rxlev > 0 and S qual > 0. Wherein, this threshold is configured by the network device to the terminal.

[0205] Further, in the cell reselection method provided by the embodiments of the present disclosure, on the one hand, the terminal can select the cell closest to the terminal as the target cell. On the other hand, the terminal can select the cell closest to the terminal from the cells that meet the S criterion for cell reselection as the target cell.

[0206] In this way, when the terminal selects the target cell based on the distance, it can directly select the cell closest to the terminal based on the distance between the terminal and the cell without using the R criterion, and determine the cell closest to the terminal as the target cell.

[0207] It can be understood that in the cell reselection method provided by the embodiments of the present disclosure, the process of cell reselection by the terminal may include: reselection to the target cell.

[0208] Figure 13 is a flowchart of a cell reselection method shown according to an exemplary embodiment. As Figure 13 shown, the cell reselection method can be executed by the terminal and includes the following steps.

[0209] In step S111, the terminal reselects to the target cell.

[0210] It can be understood that in the cell reselection method provided by the embodiments of the present disclosure, in the process of cell reselection by the terminal according to the location information of the terminal, one or more of the processes such as neighbor cell measurement, target cell determination, and reselection to the target cell may be involved.

[0211] For example, in an example of the embodiments of the present disclosure, in the process of cell reselection by the terminal based on the location information, various combination methods can be implemented among the processes of neighbor cell measurement and target cell determination by the terminal. And it can also be implemented in combination with the existing technology. For example, the terminal can perform cell reselection based on the neighbor cell measurement method provided by the embodiments of the present disclosure and in combination with the implementation manner of target cell selection in the existing technology, or the terminal can also perform cell reselection based on the neighbor cell measurement method in the existing technology and in combination with the implementation manner of target cell selection provided by the embodiments of the present disclosure, or the terminal can also perform cell reselection based on the neighbor cell measurement method and the target cell selection method provided by the embodiments of the present disclosure.

[0212] In one example, in the cell reselection method provided by the embodiments of the present disclosure, the terminal may perform neighbor cell measurement based on location information and determine a target cell based on the distance between the terminal and the target cell. For example, the network device provides a distance threshold Rx to the terminal, and the network device may send Rx to the terminal through a system message and / or an RRC release message. The distance R between the terminal and the serving cell, where R may be the distance between the terminal and the satellite corresponding to the serving cell, or the distance between the terminal and the center of the serving cell. If the frequency priority of the neighbor cell is lower than that of the serving cell, or the frequency of the neighbor cell is the same as that of the serving cell, the condition for the terminal to measure the neighbor cell is R>Rx; that is, when R>Rx, the terminal measures the neighbor cell. If the frequency priority of the neighbor cell is lower than that of the serving cell, or the frequency of the neighbor cell is the same as that of the serving cell, the condition for the terminal to measure the neighbor cell is R>Rx and the serving cell does not satisfy S rxlev >S IntraSearchP , that is, when R>Rx and S rxlev <=S IntraSearchP When, the terminal measures the neighbor cell. If the frequency priority of the neighbor cell is higher than that of the serving cell, the terminal ignores the distance threshold provided by the network device and always measures the neighbor cell. After the terminal performs neighbor cell measurement based on location information, it can select a target cell based on the distance between the terminal and the target cell. For example, the terminal can calculate the distances between the terminal and multiple target cells, and then select the cell with the smallest distance as the target cell. The terminal calculates the ratio of the distances to multiple target cells to the cell coverage radius, and the terminal selects the cell with the smallest ratio as the target cell.

[0213] In another example, in the cell reselection method provided by the embodiments of the present disclosure, the terminal may perform neighbor cell measurement based on location information and determine a target cell based on the R criterion and the distance between the terminal and the target cell. For example, the network device provides a distance threshold Rx to the terminal, and the network device may send Rx to the terminal through a system message and / or an RRC release message. The distance R between the terminal and the serving cell, where R may be the distance between the terminal and the satellite corresponding to the serving cell, or the distance between the terminal and the center of the serving cell. If the frequency priority of the neighbor cell is lower than that of the serving cell, or the frequency of the neighbor cell is the same as that of the serving cell, the condition for the terminal to measure the neighbor cell is R>Rx; that is, when R>Rx, the terminal measures the neighbor cell. If the frequency priority of the neighbor cell is lower than that of the serving cell, or the frequency of the neighbor cell is the same as that of the serving cell, the condition for the terminal to measure the neighbor cell is R>Rx and the serving cell does not satisfy S rxlev >S IntraSearchP , that is, when R>Rx and S rxlev <=S IntraSearchPWhen the time comes, the terminal measures neighboring cells. If the frequency priority of a neighboring cell is higher than that of the serving cell, the terminal ignores the distance threshold provided by the network device and continuously measures the neighboring cell. After the terminal performs neighboring cell measurement based on the location information, the target cell can be determined based on the R criterion and the distance between the terminal and the target cell. For example, the terminal selects N cells according to the R criterion, and then selects the cell with the smallest distance from the terminal among the N cells as the target cell. The terminal selects N cells according to the R criterion, then the terminal determines the ratio of the distance from the terminal to the N cells to the cell coverage radius, and the terminal selects the cell with the smallest ratio as the target cell.

[0214] In another example, in the cell reselection method provided by the embodiments of the present disclosure, the terminal can perform neighboring cell measurement based on the neighboring cell measurement method of the related art and perform target cell selection based on the target cell selection method provided by the embodiments of the present disclosure. For example, in the embodiments of the present disclosure, the terminal can determine whether to measure neighboring cells based on the S criterion and determine the target cell based on the location information. For example, for the measurement of co-frequency neighboring cells, if the serving cell satisfies S rxlev <= S IntraSearchP , then the terminal can select to measure the neighboring cell. For the measurement of inter-frequency neighboring cells, if the frequency priority of the neighboring cell is less than or equal to the frequency priority of the serving cell, then if the S of the serving cell rxlev <= S nonIntraSearchP , then the terminal can select to measure the neighboring cell. After the terminal performs neighboring cell measurement based on the S criterion, the target cell can be determined based on one or more of the R criterion and the distance between the terminal and the target cell. For example, the terminal selects N cells according to the R criterion, and then selects the cell with the smallest distance from the terminal among the N cells as the target cell. The terminal selects N cells according to the R criterion, then the terminal determines the ratio of the distance from the terminal to the N cells to the cell coverage radius, and the terminal selects the cell with the smallest ratio as the target cell.

[0215] It can be understood that the above examples are only for illustrative purposes, and there can be various different combinations of the processes of neighboring cell measurement and target cell selection for cell reselection.

[0216] Based on the same concept, the embodiments of the present disclosure also provide a cell reselection method, and this cell reselection method can be executed by a network device.

[0217] Among them, in the cell reselection method provided by the embodiments of the present disclosure, the network device can send parameter information for instructing the terminal to perform cell reselection based on the location information to the terminal, so that the terminal can perform cell reselection based on the parameter information sent by the network device and based on the parameter information and the location information of the terminal. Figure 14 It is a flowchart of a cell reselection method shown according to an exemplary embodiment. AsFigure 14 As shown, the cell reselection method can be performed by a network device and includes the following steps.

[0218] In step S121, a first message is sent, and the first message is used to indicate parameter information for the terminal to perform cell reselection based on location information.

[0219] In the embodiments of the present disclosure, the parameter information for indicating the terminal to perform cell reselection based on location information may include at least one of the following: the frequency of the neighboring cell, the frequency of the serving cell, the frequency priority of the neighboring cell, the frequency priority of the serving cell, the distance threshold, and the geographical location range.

[0220] Among them, the network device may send the first message based on the system message and / or the radio resource control (RRC) release message.

[0221] In the cell reselection method provided by the embodiments of the present disclosure, in one implementation, the network device may send the frequency of the neighboring cell, the frequency of the serving cell, the frequency priority of the neighboring cell, and the frequency priority of the serving cell to the terminal through the first message, so that the terminal can determine whether to measure the neighboring cell based on the frequency of the neighboring cell, the frequency of the serving cell, the frequency priority of the neighboring cell, the frequency priority of the serving cell, and the location information of the terminal.

[0222] In one implementation, the network device may indicate the distance threshold for cell measurement to the terminal through the first message. The terminal receives the distance threshold sent by the network device, so that the terminal can determine whether to measure the neighboring cell based on the distance between the terminal and the serving cell and the distance threshold.

[0223] In another implementation, the network device may indicate the distance threshold for cell measurement, the frequency priority of the neighboring cell, and the frequency priority of the serving cell to the terminal through the first message. The terminal receives the distance threshold, the frequency priority of the neighboring cell, and the frequency priority of the serving cell sent by the network device, so that the terminal can determine whether to measure the neighboring cell based on the distance between the terminal and the serving cell, the distance threshold, the frequency priority of the neighboring cell, and the frequency priority of the serving cell.

[0224] In yet another implementation, the network device may indicate the distance threshold for cell measurement, the frequency of the neighboring cell, and the frequency of the serving cell to the terminal through the first message. The terminal receives the distance threshold, the frequency of the neighboring cell, and the frequency of the serving cell sent by the network device, so that the terminal can determine whether to measure the neighboring cell based on the distance between the terminal and the serving cell, the distance threshold, the frequency of the neighboring cell, and the frequency of the serving cell.

[0225] In the cell reselection method provided by an embodiment of the present disclosure, a terminal determines the location information of the terminal and uses the location information of the terminal to perform cell reselection. The location information includes at least one of the distance between the terminal and the cell and the geographical location where the terminal is located, and the situation where the terminal is located at the cell edge can be determined relatively accurately. Therefore, cell reselection can be performed relatively timely.

[0226] It can be understood that the cell reselection method provided in the embodiment of the present disclosure is also applicable to the process of cell reselection implemented by interaction between the terminal and the network device. During the process of cell reselection implemented by interaction between the terminal and the network device, the terminal and the network device each have the functions involved in the above embodiments. Therefore, for the process of cell reselection implemented by interaction between the terminal and the network device, reference can be made to the relevant descriptions of the above embodiments, which will not be elaborated here.

[0227] It should be noted that those skilled in the art can understand that the various embodiments / methods involved in the embodiments of the present disclosure can be used in combination with the foregoing embodiments or can be used independently. Whether used alone or in combination with the foregoing embodiments, their implementation principles are similar. In the embodiments of the present disclosure, some embodiments are described in the form of being used in combination. Of course, those skilled in the art can understand that such illustrative examples do not limit the embodiments of the present disclosure.

[0228] Based on the same concept, an embodiment of the present disclosure also provides a cell reselection device.

[0229] It can be understood that in order to implement the above functions, the cell reselection device provided by the embodiment of the present disclosure includes the corresponding hardware structure and / or software module for executing each function. Combining the units and algorithm steps of the examples disclosed in the embodiments of the present disclosure, the embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiments of the present disclosure.

[0230] Figure 15 is a block diagram of a cell reselection device shown according to an exemplary embodiment. Referring to Figure 15 , the cell reselection device 100 includes a processing unit 101.

[0231] The processing unit 101 is configured to determine the location information of the terminal, where the location information includes at least one of the distance between the terminal and the cell and the geographical location where the terminal is located, and perform cell reselection according to the location information.

[0232] In one implementation, the processing unit 101 is configured to measure neighboring cells.

[0233] In one implementation, in response to the frequency priority of a neighboring cell being higher than that of the serving cell, the processing unit 101 measures the neighboring cell.

[0234] In one implementation, the processing unit 101 measures neighboring cells based on location information.

[0235] In one implementation, the cell reselection device 100 further includes a receiving unit 102, which is configured to receive a first message sent by a network device, and the first message is used to indicate parameter information for the terminal to perform cell reselection based on location information.

[0236] In one implementation, the location information includes the distance between the terminal and the serving cell, and the first message is used to indicate a distance threshold.

[0237] In response to the frequency priority of a neighboring cell being lower than that of the serving cell, or the frequency of the neighboring cell being the same as that of the serving cell, when the distance between the terminal and the serving cell is greater than the distance threshold, the processing unit 101 measures the neighboring cell.

[0238] In one implementation, the location information includes the distance between the terminal and the serving cell, and the first message is used to indicate a distance threshold. In response to the frequency priority of a neighboring cell being lower than that of the serving cell, or the frequency of the neighboring cell being the same as that of the serving cell, when the distance between the terminal and the serving cell is greater than the distance threshold, and the serving cell selection level is less than or equal to the reference signal received power signal level threshold for starting co-frequency measurement, the processing unit 101 measures the neighboring cell.

[0239] In one implementation, the location information includes the geographical location where the terminal is located, and the first message is used to indicate a geographical location range. In response to the frequency priority of a neighboring cell being lower than that of the serving cell, or the frequency of the neighboring cell being the same as that of the serving cell, when the geographical location where the terminal is located is within the geographical location range, the processing unit 101 measures the neighboring cell.

[0240] In one implementation, the location information includes the geographical location where the terminal is located, and the first message is used to indicate a geographical location range. In response to the frequency priority of a neighboring cell being lower than that of the serving cell, or the frequency of the neighboring cell being the same as that of the serving cell, when the geographical location where the terminal is located is within the geographical location range, and the serving cell selection level is less than or equal to the reference signal received power signal level threshold for starting co-frequency measurement, the processing unit 101 measures the neighboring cell.

[0241] In one embodiment, the processing unit 101 determines a target cell according to the location information.

[0242] In one embodiment, the location information includes the distance between the terminal and the target cell.

[0243] Determining the target cell according to the location information includes at least one of the following:

[0244] Determine the distances between the terminal and multiple cells, and use the cell with the smallest distance among the multiple distances as the target cell.

[0245] Determine the distances between the terminal and multiple cells, and respectively determine the ratios of each distance among the multiple distances to the corresponding cell coverage radius, and use the cell with the smallest ratio among the multiple ratios as the target cell.

[0246] In one embodiment, the location information includes the distance between the terminal and the target cell.

[0247] Determining the target cell according to the location information includes at least one of the following:

[0248] Determine N cells according to the R criterion for cell reselection, and select the cell with the smallest distance from the terminal among the N cells as the target cell.

[0249] Determine N cells according to the R criterion for cell reselection, and select the cell with the smallest ratio as the target cell, where the ratio is the ratio of the distance between the terminal and the cell to the cell coverage radius.

[0250] In one embodiment, the N cells determined according to the R criterion for cell reselection satisfy one of the following conditions:

[0251] The cell selection level is greater than 0 and the cell selection quality of the cell is greater than 0. The distance between the terminal and the cell is less than the distance threshold, or the ratio of the distance between the terminal and the cell to the cell coverage radius is less than the ratio threshold. The distance between the terminal and the cell is less than the distance threshold, or the ratio of the distance between the terminal and the cell to the cell coverage radius is less than the ratio threshold, and the cell selection level is greater than 0, and the cell selection quality of the cell is greater than 0.

[0252] In one embodiment, the processing unit 101 is further configured to: reselect to the target cell.

[0253] In one embodiment, determining the target cell according to the location information includes at least one of the following:

[0254] Select the cell closest to the terminal as the target cell. Among the cells that satisfy the S criterion for cell reselection, select the cell closest to the terminal as the target cell.

[0255] In one implementation, the receiving unit 102 receives a first message sent by a network device based on a system message and / or a radio resource control release message.

[0256] Figure 16 FIG. is a block diagram of a cell reselection apparatus according to an exemplary embodiment. Refer to Figure 16 Cell reselection apparatus 200 includes a sending unit 201.

[0257] The sending unit 201 is configured to send a first message, where the first message is used to indicate parameter information for cell reselection based on location information, and the location information includes at least one of the distance between the terminal and the cell and the geographical location where the terminal is located.

[0258] In one implementation, the first message is used to indicate at least one of a distance threshold and a geographical location range.

[0259] In one implementation, the sending unit 201 sends the first message based on a system message and / or a radio resource control release message.

[0260] Regarding the apparatus in the above embodiments, the specific manners in which each module performs operations have been described in detail in the embodiments related to the method, and will not be elaborated herein.

[0261] Figure 17 FIG. is a block diagram of an apparatus 300 for cell reselection according to an exemplary embodiment. For example, the apparatus 300 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0262] Refer to Figure 17 Apparatus 300 may include one or more of the following components: a processing component 302, a memory 304, a power component 306, a multimedia component 308, an audio component 310, an input / output (I / O) interface 312, a sensor component 314, and a communication component 316.

[0263] The processing component 302 generally controls the overall operation of the apparatus 300, such as operations associated with display, telephone calls, data communication, camera operations, and recording operations. The processing component 302 may include one or more processors 320 to execute instructions to complete all or part of the steps of the above method. In addition, the processing component 302 may include one or more modules to facilitate the interaction between the processing component 302 and other components. For example, the processing component 302 may include a multimedia module to facilitate the interaction between the multimedia component 308 and the processing component 302.

[0264] The memory 304 is configured to store various types of data to support the operation of the device 300. Examples of such data include instructions for any application or method operating on the device 300, contact data, phone book data, messages, pictures, videos, and the like. The memory 304 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, a magnetic disk, or an optical disk.

[0265] The power component 306 provides power to the various components of the device 300. The power component 306 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 300.

[0266] The multimedia component 308 includes a screen that provides an output interface between the device 300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors can not only sense the boundaries of the touch or swipe actions but also detect the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 308 includes a front camera and / or a rear camera. When the device 300 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front camera and the rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0267] The audio component 310 is configured to output and / or input audio signals. For example, the audio component 310 includes a microphone (MIC) that is configured to receive external audio signals when the device 300 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals can be further stored in the memory 304 or transmitted via the communication component 316. In some embodiments, the audio component 310 further includes a speaker for outputting audio signals.

[0268] The I / O interface 312 provides an interface between the processing component 302 and a peripheral interface module, which can be a keyboard, a click wheel, buttons, and the like. These buttons can include, but are not limited to: a home button, a volume button, a power button, and a lock button.

[0269] The sensor assembly 314 includes one or more sensors for providing an assessment of the status of the device 300 in various aspects. For example, the sensor assembly 314 can detect the on / off state of the device 300, the relative positioning of components, such as the display and keypad of the device 300. The sensor assembly 314 can also detect a change in the position of the device 300 or a component of the device 300, the presence or absence of user contact with the device 300, the orientation or acceleration / deceleration of the device 300, and the temperature change of the device 300. The sensor assembly 314 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 314 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 314 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0270] The communication component 316 is configured to facilitate communication between the device 300 and other devices in a wired or wireless manner. The device 300 can access a wireless network according to communication standards, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 316 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 316 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented according to Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0271] In an exemplary embodiment, the device 300 can be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the above method.

[0272] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as the memory 304 including instructions, and the above instructions can be executed by the processor 320 of the device 300 to complete the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0273] Figure 18 is a block diagram of a device 400 for cell reselection shown according to an exemplary embodiment. For example, the device 400 can be provided as a network device, such as a base station, etc. Referring to Figure 18, the apparatus 400 includes a processing component 422, which further includes one or more processors, and memory resources represented by a memory 432 for storing instructions executable by the processing component 422, such as application programs. The application programs stored in the memory 432 may include one or more modules each corresponding to a set of instructions. In addition, the processing component 422 is configured to execute instructions to perform the above method.

[0274] The apparatus 400 may further include a power component 426 configured to perform power management of the apparatus 400, a wired or wireless network interface 450 configured to connect the apparatus 400 to a network, and an input / output (I / O) interface 458. The apparatus 400 may operate according to an operating system stored in the memory 432, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or the like.

[0275] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as the memory 432 including instructions, and the above instructions can be executed by the processing component 422 of the apparatus 400 to complete the above method. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0276] It can be further understood that "a plurality of" in the present disclosure means two or more, and other quantifiers are similar. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after. The singular forms of "a", "the" and "said" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0277] It can be further understood that terms such as "first", "second", etc. are used to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other and do not indicate a specific order or importance. In fact, the expressions such as "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information.

[0278] It can be further understood that although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be construed as requiring the operations to be performed in the specific order shown or in a serial order, or requiring all the operations shown to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0279] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common general knowledge or conventional technical means in the technical field not disclosed herein. The specification and examples are only illustrative, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0280] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A cell reselection method, characterized in that, Applied to a terminal, the cell reselection method includes: Determine the location information of the terminal, where the location information includes the distance between the terminal and the cell, or the location information includes the distance between the terminal and the cell and the geographical location where the terminal is located; Receive a first message sent by a network device, where the first message is used to indicate parameter information for the terminal to perform cell reselection based on the location information, and the parameter information includes a distance threshold; Measure neighboring cells based on the location information; Among them, the measuring neighboring cells based on the location information includes: In response to the frequency priority of a neighboring cell being lower than the frequency priority of the serving cell or the frequency of the neighboring cell being the same as the frequency of the serving cell, and the serving cell selection level being greater than the reference signal received power signal level threshold for starting co-frequency measurement, measure the neighboring cell when the distance between the terminal and the serving cell is greater than the distance threshold.

2. The cell reselection method according to claim 1, wherein The location information includes the distance between the terminal and the cell and the geographical location where the terminal is located, and the parameter information includes a geographical location range.

3. The cell reselection method according to claim 1, wherein The method further includes: Determine a target cell according to the location information.

4. The cell reselection method according to claim 3, wherein The determining a target cell according to the location information includes one of the following: Determine the distances between the terminal and multiple cells, and use the cell with the smallest distance among the multiple distances as the target cell; Determine the distances between the terminal and multiple cells, and respectively determine the ratios of each distance among the multiple distances to the corresponding cell coverage radius, and use the cell with the smallest ratio among the multiple ratios as the target cell.

5. The cell reselection method according to claim 3, wherein The determining a target cell according to the location information includes one of the following: Determine N cells according to the R criterion for cell reselection, and select the cell with the smallest distance from the N cells as the target cell; Determine N cells according to the R criterion for cell reselection, and select the cell with the smallest ratio from the N cells as the target cell, where the ratio is the ratio of the distance between the terminal and the cell to the cell coverage radius.

6. The cell reselection method according to claim 5, characterized in that, The N cells determined according to the R criterion for cell reselection satisfy one of the following conditions: The cell selection level is greater than 0 and the cell selection quality of the cell is greater than 0; The distance between the terminal and the cell is less than the distance threshold, or the ratio of the distance between the terminal and the cell to the cell coverage radius is less than the ratio threshold; The distance between the terminal and the cell is less than the distance threshold, or the ratio of the distance between the terminal and the cell to the cell coverage radius is less than the ratio threshold, and the cell selection level is greater than 0, and the cell selection quality of the cell is greater than 0.

7. The cell reselection method according to any one of claims 3 to 6, characterized in that The cell reselection method further includes: Reselect to the target cell.

8. The cell reselection method according to claim 3, wherein The determining a target cell according to the location information includes: Among the cells that satisfy the S criterion, select the cell closest to the terminal as the target cell.

9. The cell reselection method according to claim 1, wherein Receiving the first message sent by the network device includes: Receive the first message sent by the network device based on the system message and / or the radio resource control release message.

10. A cell reselection method, characterized in that Applied to a network device, the cell reselection method includes: Send a first message, where the first message is used to indicate parameter information for the terminal to perform cell reselection based on the location information, and the parameter information includes a distance threshold; The location information includes the distance between the terminal and the cell, or the location information includes the distance between the terminal and the cell and the geographical location where the terminal is located, and the location information is used for the terminal to measure neighboring cells, including: The measurement is responsive to the frequency priority of the neighboring cell being lower than the frequency priority of the serving cell or the frequency of the neighboring cell being the same as the frequency of the serving cell, the serving cell selection level being greater than the reference signal received power signal level threshold for initiating co-frequency measurement, and the distance between the terminal and the serving cell being greater than the distance threshold.

11. The cell reselection method according to claim 10, wherein The sending of the first message includes: Based on the system message and / or the radio resource control release message, send the first message.

12. A cell reselection device, characterized in that, The cell reselection device includes: A processing unit configured to determine the location information of the terminal, where the location information includes the distance between the terminal and the cell, or the location information includes the distance between the terminal and the cell and the geographical location where the terminal is located; A receiving unit configured to receive a first message sent by the network device, where the first message is used to indicate parameter information for the terminal to perform cell reselection based on the location information, and the parameter information includes a distance threshold; The processing unit is further configured to measure neighboring cells based on the location information; The measuring neighboring cells based on the location information includes: Responsive to the frequency priority of the neighboring cell being lower than the frequency priority of the serving cell or the frequency of the neighboring cell being the same as the frequency of the serving cell, the serving cell selection level being greater than the reference signal received power signal level threshold for initiating co-frequency measurement, and when the distance between the terminal and the serving cell is greater than the distance threshold, measure the neighboring cell.

13. A cell reselection device, characterized in that, The cell reselection device includes: A sending unit configured to send a first message, where the first message is used to indicate parameter information for the terminal to perform cell reselection based on the location information, and the parameter information includes a distance threshold; The location information includes the distance between the terminal and the cell, or the location information includes the distance between the terminal and the cell and the geographical location where the terminal is located, and the location information is used for the terminal to measure neighboring cells, including: The measurement is responsive to the frequency priority of the neighboring cell being lower than the frequency priority of the serving cell or the frequency of the neighboring cell being the same as the frequency of the serving cell, the serving cell selection level being greater than the reference signal received power signal level threshold for initiating co-frequency measurement, and the distance between the terminal and the serving cell being greater than the distance threshold.

14. A cell reselection device, characterized in that, Includes: A processor; A memory for storing instructions executable by the processor; Wherein, the processor is configured to: execute the cell reselection method according to any one of claims 1 to 9 or execute the cell reselection method according to any one of claims 10 to 11.

15. A storage medium, characterized in that, Instructions are stored in the storage medium, and when the instructions in the storage medium are executed by the processor of the terminal, the terminal is enabled to execute the cell reselection method according to any one of claims 1 - 9, or when the instructions in the storage medium are executed by the processor of the network device, the network device is enabled to execute the cell reselection method according to any one of claims 10 to 11.

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