WO2021258767A1

WO2021258767A1 - Communication method, apparatus, and system

Info

Publication number: WO2021258767A1
Application number: PCT/CN2021/078760
Authority: WO
Inventors: 曾勇波; 郭涛; 刘领军; 秦城; 金辉
Original assignee: 华为技术有限公司
Priority date: 2020-06-24
Filing date: 2021-03-02
Publication date: 2021-12-30
Also published as: CN113840339A; CN113840339B

Abstract

Embodiments of the present application provide a communication method, apparatus, and system. The method comprises: a terminal device determines a load value of a first cell according to a resource allocation ratio of the first cell; the terminal device measures an RSRP value of the first cell; the terminal device determines, according to the load value and the RSRP value of the first cell, whether the first cell satisfies a trigger condition of cell handover; and if the first cell satisfies the trigger condition, the terminal device selects a target cell from at least one second cell according to a history load value of the at least one second cell, and then the terminal device hands over to the target cell. On the basis of the solution, a terminal device in an idle state can predict the load of a camped cell, and when the load value of the camped cell exceeds a load threshold, the terminal device reselects a target cell and is camped on the reselected target cell, so that when the terminal device enters a connected state, sufficient resources for data transmission of the terminal device can be ensured, and the communication efficiency of the terminal device can be improved.

Description

Communication method, device and system

Cross-references to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 202010588292.0, and the application name is "communication method, device and system" on June 24, 2020, the entire content of which is incorporated into this application by reference.

Technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to communication methods, devices, and systems.

Background technique

Generally, in a geographic location, multiple cells may overlap. For a terminal device, the link quality of different cells covering the terminal device is different. Choosing a different cell to access the terminal device will also have different service experience such as rate and delay. According to the rules defined by the 3rd generation partnership project (3rd generation partnership project, 3GPP) standard, cell selection is based on Reference Signal Received Power (RSRP).

Summary of the invention

The embodiments of the present application provide communication methods, devices, and systems to improve the communication efficiency of terminal equipment.

In a first aspect, an embodiment of the present application provides a communication method, which includes: a terminal device determines a load value of the first cell according to a resource allocation ratio of the first cell, and the resource allocation ratio of the first cell is based on the resource allocation ratio of the first cell. Obtained by the amount of uplink resources actually allocated by the terminal device; the terminal device measures the RSRP value of the first cell; the terminal device obtains the RSRP value of the first cell according to the load value of the first cell, Judging whether the first cell meets the trigger condition for cell change; if the trigger condition for cell change is satisfied, the terminal device selects a target cell from the at least one second cell according to the historical load value of the at least one second cell, The second cell is different from the first cell; the terminal device is changed to the target cell.

Based on the above solution, the terminal equipment in the idle state can predict the load of the camping cell, and when the load value of the camping cell exceeds the load threshold, reselect a target cell and reselect it to the target cell, so that the terminal equipment will follow When entering the connected state, it can ensure that there are sufficient resources for the data transmission of the terminal device, thereby improving the communication efficiency of the terminal device.

In a possible implementation method, the terminal device judging whether the first cell satisfies the trigger condition for cell replacement according to the load value of the first cell and the RSRP value of the first cell includes: If the RSRP value of the first cell is greater than the preset first RSRP threshold, and the load value of the first cell is greater than the preset first load threshold, the terminal device determines that the first cell satisfies Trigger conditions for cell replacement.

Based on the above solution, given the trigger conditions for triggering the cell change, when the cell load value and RSRP value both meet the set conditions, the cell change is triggered, which can ensure that the cell change is triggered at an appropriate time, which is conducive to saving resources.

In a possible implementation method, the terminal device selecting the target cell from the at least one second cell according to the historical load value of the at least one second cell includes: the terminal device selects the target cell from the at least two second cells. A candidate cell is selected from the second cell, the RSRP value of the candidate cell is greater than the preset second RSRP threshold, the historical load value of the candidate cell is less than the preset second load threshold, and the candidate cell’s The historical load value is less than the load value of the first cell; the terminal device selects a cell from the candidate cells according to a preset rule as the target cell.

Based on the above solution, when selecting the target cell to be replaced, first select the candidate cell, and then select a target cell from the candidate cells, which helps to select a suitable cell for replacement.

In a possible implementation method, the terminal device selects a cell from the candidate cells as the target cell according to a preset rule, including: the terminal device selects the candidate cell with the smallest load value A cell is used as the target cell; or, the terminal device determines a random number according to a random number algorithm, and selects a cell from the candidate cells according to the random number as the target cell.

Based on the above solution, the load of the selected target cell is small, which helps to ensure that there are sufficient resources for data transmission of the terminal device, thereby improving the communication efficiency of the terminal device.

In a possible implementation method, the terminal device determines the resource allocation ratio of the first cell according to the amount of uplink resources actually allocated to the terminal device and the amount of resources required by the terminal device, and the resource allocation The ratio is the ratio of resource allocation in the uplink direction of the first cell; or, the terminal device determines the resource allocation of the first cell based on the amount of uplink resources actually allocated to the terminal device and the amount of resources required by the network device Ratio, the resource allocation ratio is the downlink resource allocation ratio of the first cell.

In a possible implementation method, the resource allocation ratio of the first cell is determined according to the historical resource allocation ratio of the first cell; or, the resource allocation ratio of the first cell is determined according to the first cell. The historical resource allocation ratio of a cell and the current resource allocation ratio are determined.

Based on the above solution, it is helpful to accurately determine the resource allocation ratio of the cell, and then the load value of the cell can be accurately determined.

In a possible implementation method, the historical resource allocation ratio of the first cell is obtained by measurement by the terminal device, or obtained by the terminal device from a network device.

In a possible implementation method, the terminal device periodically accesses the at least one second cell, and obtains the historical load value of the at least one second cell.

In a possible implementation method, the terminal device determines the load value of the target cell; the terminal device reports the load value of the target cell to the network device.

Based on the above solution, the network device can learn the load value of the target cell, so that when other terminal devices need to query the load value of the target cell, the other terminal device can request the query from the network device, and the load value of the target cell can be obtained quickly.

In a possible implementation method, before the terminal device is changed to the target cell, the terminal device is in an idle state, and the terminal device adjusts the RSRP values of the first cell and the target cell to satisfy Reselection rules; or, the terminal device is in a connected state, and the terminal device adjusts the RSRP values of the first cell and the target cell, so that the handover rule is satisfied.

Based on the above solution, the terminal device may first adjust the RSRP values of the first cell and the target cell, so as to realize rapid replacement to the target cell.

In a possible implementation method, the terminal device is in an idle state, the first cell is the cell where the terminal device resides, and the cell is changed to cell reselection; or, the terminal device is in a connected state The first cell is a serving cell of the terminal device, and the cell is changed to a cell handover.

In a second aspect, an embodiment of the present application provides a communication method, including: a terminal device sends a request message to a cloud device, the request message includes identification information of at least two cells, the at least two cells including a first cell and at least A second cell, the request message is used to request to obtain the load levels of the at least two cells, the first cell is a serving cell of the terminal device, and the second cell is different from the first cell; The terminal device receives the load levels of the at least two cells from the cloud device; if the load level of the first cell is greater than a preset first load level threshold, the terminal device is based on the at least For a load level of a second cell, a target cell is selected from the at least one second cell; the terminal device is handed over to the target cell.

Based on the above implementation solution, the terminal device in the connected state can obtain the load level of the serving cell and at least one second cell from the cloud device, and reselect a target when the load level of the serving cell exceeds the preset load level threshold The cell is switched to the target cell, so that sufficient resources can be ensured for data transmission of the terminal device, and the communication efficiency of the terminal device can be improved.

In a possible implementation method, the terminal device selecting the target cell from the at least one second cell according to the load level of the at least one second cell includes: the terminal device selects the target cell from the at least one second cell. Select a candidate cell from the second cell, the RSRP value of the candidate cell is greater than the preset first RSRP threshold, the load level of the candidate cell is less than the preset second load level threshold, and the candidate cell’s The load level is less than the load level of the first cell; the terminal device selects a cell from the candidate cells according to a preset rule as the target cell.

In a possible implementation method, before the terminal device sends the request message to the cloud device, the terminal device determines that the period for sending the request message arrives; or, the terminal device determines the RSRP value of the first cell It is greater than the preset second RSRP threshold, and the load value of the first cell is greater than the preset load threshold.

Based on the above solution, given the trigger condition for triggering the cell change, it can be ensured that the cell change is triggered at an appropriate time, which is beneficial to saving resources.

In a possible implementation method, before the terminal device sends the request message to the cloud device, the terminal device sends the information of the first cell to the cloud device, and the information of the first cell includes the first cell. The identification information of a cell, the link signal quality information of the first cell, and the resource allocation ratio of the first cell, and the information of the first cell is used by the cloud device to determine the load level of the first cell .

Based on the above solution, the cloud device can accurately determine the load level of the cell.

Based on the above solution, it is helpful to accurately determine the resource allocation ratio of the cell, and then the load level of the cell can be accurately determined.

In a possible implementation method, the historical resource allocation ratio of the first cell is measured by the terminal device or acquired by the terminal device from a network device.

In a possible implementation method, before the terminal device switches to the target cell, the terminal device adjusts the RSRP values of the first cell and the target cell, so that the handover rule is satisfied.

In a third aspect, an embodiment of the present application provides a communication method, including: a cloud device receives a request message from a first terminal device, the request message includes identification information of at least two cells, and the at least two cells include the first terminal device. A first cell and at least one second cell of a terminal device, the request message is used to request to obtain the load levels of the at least two cells, the first cell is the serving cell of the first terminal device, and the The second cell is different from the first cell; the cloud device sends the load levels of the at least two cells to the first terminal device, and the load levels of the at least two cells are used for the first terminal device Select the target cell for handover.

In a possible implementation method, the cloud device receives first information of the first cell from the first terminal device, and the first information includes the identification information of the first cell, the first information The first link signal quality information of the cell and the first resource allocation ratio of the first cell; the cloud device receives the second information of the first cell from at least one second terminal device in the first cell , The second information includes the identification information of the first cell, the second link signal quality information of the first cell, and the second resource allocation ratio of the first cell, and the first cell is the The serving cell of the second terminal device; the cloud device determines the load level of the first cell according to the first information and the second information.

In a possible implementation method, the cloud device determining the load level of the first cell according to the first information and the second information includes: the cloud device according to the first information and the The second information determines at least one resource allocation ratio, and the link signal quality information corresponding to the at least one resource allocation ratio meets a preset link signal quality requirement; the cloud device is based on the at least one resource allocation ratio To determine the load level of the first cell.

In a possible implementation method, the first resource allocation ratio of the first cell is determined according to the historical resource allocation ratio of the first cell; or, the first resource allocation ratio of the first cell is Determined according to the historical resource allocation ratio and the current resource allocation ratio of the first cell.

In a fourth aspect, an embodiment of the present application provides a communication method, including: a terminal device sends a request message to a cloud device, the request message including identification information of at least two cells and RSRP values corresponding to the at least two cells, The at least two cells include a first cell and at least one second cell of the terminal device, the request message is used to request to obtain identification information of the target cell after handover, and the first cell is the terminal device's A serving cell, the second cell is different from the first cell; the terminal device receives the identification information of the target cell from the cloud device; the terminal device switches to the target cell.

Based on the above implementation solution, a terminal device (such as a CPE) in a connected state can obtain the load level of the serving cell and at least one second cell from the cloud device, and when the load level of the serving cell exceeds the preset load level threshold, The cloud device re-selects a target cell for the terminal device, and then the terminal device switches to the target cell, thereby ensuring that there are sufficient resources for data transmission of the terminal device, thereby improving the communication efficiency of the terminal device.

In a possible implementation method, before the terminal device sends the request message to the cloud device, the terminal device determines that the period for sending the request message arrives; or, the terminal device determines the RSRP value of the first cell It is greater than the preset RSRP threshold, and the load value of the first cell is greater than the preset load threshold.

In a fifth aspect, an embodiment of the present application provides a communication method, including: a cloud device receives a request message from a first terminal device, the request message including identification information of at least two cells and RSRP corresponding to the at least two cells respectively Value, the at least two cells include a first cell and at least one second cell, the request message is used to request to obtain identification information of the target cell after the terminal device is handed over, and the first cell is the first cell The serving cell of the terminal device, the second cell is different from the first cell; if the load level of the first cell is greater than the preset first load level threshold, the cloud device will be based on the at least one The load level of the second cell, the target cell is selected from the at least one second cell; the cloud device sends the identification information of the target cell to the first terminal device, and the identification information of the target cell is used Switching to the target cell by the first terminal device.

In a possible implementation method, the cloud device selecting the target cell from the at least one second cell according to the load level of the at least one second cell includes: the cloud device selects the target cell from the at least one second cell. A candidate cell is selected from a second cell, the RSRP value of the candidate cell is greater than the preset RSRP threshold, the load level of the candidate cell is less than the preset second load level threshold, and the candidate cell’s The load level is less than the load level of the first cell; the cloud device selects a cell from the candidate cells according to a preset rule as the target cell.

In a possible implementation method, the terminal device selects a cell from the candidate cells as the target cell according to a preset rule, including: the cloud device selects the candidate cell with the smallest load value A cell is used as the target cell; or, the cloud device determines a random number according to a random number algorithm, and selects a cell from the candidate cells according to the random number as the target cell.

In a sixth aspect, an embodiment of the present application provides a communication device. The device may be a terminal device or a chip for the terminal device. The device has the function of realizing any implementation method of the first aspect, the second aspect, or the fourth aspect. This function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

In a seventh aspect, an embodiment of the present application provides a communication device. The device may be a cloud device or a chip for the cloud device. The device has the function of realizing any of the foregoing third aspect or fifth aspect. This function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

In an eighth aspect, an embodiment of the present application provides a communication device including a processor and a memory; the memory is used to store computer execution instructions, and when the device is running, the processor executes the computer execution instructions stored in the memory to enable The device executes any implementation method of the first aspect to the fifth aspect described above.

In a ninth aspect, an embodiment of the present application provides a communication device, including a method for executing the methods of the first aspect to the fifth aspect, and each step of any of the possible implementation methods of the first aspect to the fifth aspect Unit or means (means).

In a tenth aspect, an embodiment of the present application provides a communication device, including a processor and an interface circuit, where the processor is configured to communicate with other devices through the interface circuit and execute any implementation method of the first aspect to the fifth aspect. The processor includes one or more.

In an eleventh aspect, an embodiment of the present application provides a communication device, including a processor, configured to be connected to a memory and used to call a program stored in the memory to execute any implementation method of the first aspect to the fifth aspect described above . The memory can be located inside the device or outside the device. And the processor includes one or more.

In a twelfth aspect, the embodiments of the present application also provide a computer-readable storage medium that stores instructions in the computer-readable storage medium, which when run on a computer, causes a processor to execute the first to fifth aspects described above. Any implementation method of the aspect.

In a thirteenth aspect, the embodiments of the present application also provide a computer program product, which includes a computer program, and when the computer program runs, any implementation method of the first aspect to the fifth aspect described above is executed.

In a fourteenth aspect, an embodiment of the present application also provides a chip system, including a processor, configured to execute any implementation method of the first aspect to the fifth aspect.

Description of the drawings

Figure 1 is a schematic diagram of a network architecture to which an embodiment of the application is applicable;

FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of this application;

FIG. 3 is a schematic flowchart of another communication method provided by an embodiment of this application;

FIG. 4 is a schematic flowchart of another communication method provided by an embodiment of this application;

FIG. 5 is a schematic flowchart of another communication method provided by an embodiment of this application;

FIG. 6 is an example diagram of a user setting service type priority provided by an embodiment of the application; FIG.

FIG. 7 is an example diagram of a user configuration network optimization service provided by an embodiment of the application;

FIG. 8 is a schematic diagram of a communication device provided by an embodiment of this application;

FIG. 9 is a schematic diagram of another communication device provided by an embodiment of this application;

FIG. 10 is a schematic diagram of a cloud device provided by an embodiment of this application;

FIG. 11 is a schematic diagram of a terminal device provided by an embodiment of this application.

detailed description

As shown in FIG. 1, it is a schematic diagram of a network architecture to which the embodiments of this application are applicable, including a terminal device and a network device. The terminal device communicates with the network device through a wireless interface. It should be noted that the number of cells or network devices covering one terminal device in FIG. 1 is only an example, and is not limited in practice.

Terminal device (terminal device) is a device with wireless transceiver function, such as mobile phone (mobile phone), tablet computer (pad), computer with wireless transceiver function, virtual reality (VR) terminal, augmented Reality (AR) terminals, wireless terminals in industrial control (industrial control), wireless terminals in remote medical (remote medical), wireless terminals in smart grid (smart grid), smart city (smart city) Wireless terminals, wireless terminals in smart homes, user equipment (UE), customer terminal equipment (Customer Premise Equipment, CPE), etc.

Network equipment is a type of equipment that provides wireless communication functions for terminal equipment. Network equipment includes but is not limited to: the next generation base station (gnodeB, gNB) in the fifth generation (5G) and evolved node B (evolved). node B, eNB), radio network controller (RNC), node B (node B, NB), base station controller (BSC), base transceiver station (BTS), home Base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (BBU), transmission point (TRP), transmission point (TP), mobile switching center, etc.

In the embodiment of this application, when the terminal device is in the idle state, the cell that the terminal device accesses is called the camping cell of the terminal device. For example, when the terminal device is in the idle state, the cell to camp on can be selected according to the RSRP value . For example, if the RSRP value of a certain cell satisfies the S criterion, the terminal device can select the cell to camp on, that is, the cell is used as the cell on which the terminal device resides. When the terminal device is in the Connected state, the cell accessed by the terminal device is called the serving cell.

The RSRP of the cell where the terminal resides or the serving cell can only reflect the received signal strength of the cell, and cannot reflect the performance of the cell. For example, it cannot reflect whether the cell is congested (congestion is usually manifested as insufficient resources in the cell to meet the needs of the connected terminal equipment). Therefore, the terminal equipment selects the cell based on RSRP, and may encounter a situation where the RSRP is good but cannot be connected to the network. For example, for terminal equipment with low mobility or in a static state, such as customer terminal equipment (CPE), smart equipment in office, etc., because the signal strength of receiving RSRP is relatively stable, once the cell selection is completed according to RSRP, it will not It is too likely to camp again or switch to another cell.

However, because RSRP can only reflect the downlink signal strength, it cannot reflect the quality of the cellular network. For example, when uplink or downlink congestion occurs in a cell, RSRP is very good, but due to insufficient resource allocation, the data transmission rate on the cellular link is very low, resulting in poor experience for terminal devices accessing the cell.

In view of the above-mentioned shortcomings of selecting a cell based on RSRP, the embodiments of the present application propose a method for measuring network load and a method for selecting a cell based on network load. In order to be able to measure the network load of a cell, this embodiment of the application proposes to collect historical information about cell performance through terminal equipment and/or cloud equipment, combine real-time measured data to measure the network load of the cell, and proposes to evaluate the cell load based on the terminal side or A method for evaluating cell network load based on the interaction of terminal equipment and cloud equipment, and a method for triggering cell reselection or handover based on cell network load is proposed.

For ease of description, in the following embodiments of the present application, the terminal device is a CPE as an example for description.

CPE is a mobile signal access device that receives mobile signals and forwards them with Wireless Fidelity (Wireless Fidelity, WiFi) signals. It is also a device that converts high-speed 4G or 5G signals into WiFi signals and supports simultaneous Internet access. There are also more mobile terminals. CPE can be widely used for wireless network access in rural areas, towns, hospitals, units, factories, communities, etc., which can save the cost of laying wired networks. According to the installation location, CPE can be divided into outdoor CPE and indoor CPE. Once the CPE is installed in place, it will basically not move randomly, so the received signal strength is relatively stable.

After the CPE is installed in place, the user can start the CPE. After the CPE is started, it starts to search for the cell and selects a cell with the best RSRP for access. At this time, the CPE is in a connected state and can be used to receive downlink wireless signals from network equipment , And convert the downlink signal into a WiFi signal for transmission, or it can receive the WiFi signal of the user equipment (such as mobile phone, computer, etc.) connected to the CPE, and convert the WiFi signal into an uplink wireless signal and send it to the connected network device . For example, referring to Figure 1, taking the terminal device in Figure 1 as an example of a CPE. After the CPE is started, it can search for broadcast signals sent by multiple network devices deployed around it, and perform RSRP based on the received broadcast signals of different network devices. Measure and finally select a cell of a certain network device for access, and the RSRP of the accessed cell is the best.

The current CPE has a fixed installation location and stable signals from surrounding cells. Therefore, once it is connected to a certain cell, the possibility of subsequent cell replacement is low. In the embodiment of this application, in order to enable the CPE to switch to another cell with a relatively light load when the load of the cell currently accessed or camped on is heavy, the CPE can be configured with corresponding functions so that the CPE has At the same time, refer to the cell load and RSRP to select the cell's ability. Of course, in order to avoid a situation where the CPE frequently changes cells in a relatively short period of time and causes serious power consumption, the corresponding functions can be configured in the CPE in advance. For example, when the number of cell changes in the CPE exceeds the preset number of replacement thresholds within a set period of time, the CPE determines that the handover is too frequent, and can suspend or disable the function of cell replacement. In this situation, the CPE may select the cell where it camped (or access) last time to camp (or access), or it may select the cell where it camped (or access) initially to camp (or access).

In some embodiments provided in this application, whether the CPE needs to enable the cell replacement function provided in the embodiments of this application can be determined based on the type of ongoing service. The service type here refers to the service connected to the terminal of the 5G or 4G network through the CPE, such as WeChat service and iQiyi video service. As an example, service types can be divided into low-latency services (such as game services, etc.) and mass data services (such as users watching online videos, etc.). The characteristic of the low-delay service is that it requires a relatively high time delay for data transmission, and the amount of communication service data is not large. The characteristic of the mass data service is the relatively large amount of communication service data. For low-latency services, the cell to be accessed is required to provide a stable connection, but the requested amount of resources is not high. Therefore, when the CPE determines that the service type is a low-latency service, it can be determined not to enable the cell replacement function. Therefore, the CPE can maintain access to the cell with the best RSRP initially accessed. Even though the load of the cell may be heavier in certain periods of time, the CPE can continue to stay in the cell. For mass data services, there is a high requirement for the amount of resources that a cell can provide, so it is generally necessary to turn on the function of cell replacement.

In some embodiments provided in this application, the user can also configure the service type priority for the CPE, so that the CPE can decide whether to enable the cell replacement function based on the configured service type priority. For example, referring to Figure 6, an example diagram of setting the priority of the service type for the user. The user can wirelessly connect the mobile phone to the CPE, and then the user configures the priority of the CPE service type by operating on the mobile phone. The user clicks on the application "CPE" on the mobile phone to enter the configuration interface of the CPE, and then selects the "service type priority" option in the configuration interface, and then can select "data priority mode" or "delay priority mode" to complete the service Type priority configuration. In the data-priority mode, the CPE prioritizes services with a large amount of business data. In the delay-priority mode, the CPE prioritizes the low-latency services, that is, prioritizes the services with higher latency requirements. In the data priority mode, the CPE turns on the cell replacement function, and in the delay priority mode, the CPE turns off the cell replacement function.

In some embodiments provided in this application, the user may also configure whether to enable the network optimization service for the CPE. When the user configures to turn on the network optimization service, the CPE turns on the cell replacement function, and when the user configures to turn off the network optimization service, the CPE turns off the cell replacement function. For example, referring to Figure 7, an example diagram of configuring network optimization services for users. The user can wirelessly connect the mobile phone to the CPE, and then the user configures the network optimization service of the CPE by operating on the mobile phone. The user clicks the application "CPE" on the mobile phone to enter the CPE configuration interface, and then selects the "Network optimization service" option in the configuration interface, and then the interface pops up "Whether to enable the network optimization service", the user can select "Yes" to start the network Optimize the service, or select "No" to turn off the network optimization service.

Further, when the CPE has multiple cell replacement methods (for example, the CPE also has multiple cell replacement methods in the following embodiments 1 to 4), the CPE can select the user pre-configured method to perform cell replacement, or the CPE can perform cell replacement according to In the current actual situation, choose one method from a variety of methods to execute.

Among them, the condition that triggers the CPE to execute the cell selection method can be the periodic execution of the cell selection method, or the execution of the cell selection method before the preset time arrives. For example, the CPE finds a certain fixed time period every day according to the historical load situation (For example, from 9 am to 10 am every day) The cell load is heavy, so the CPE can start to execute the cell selection method provided in the embodiment of the present application before arriving at 9 o'clock every day to determine whether cell reselection or cell handover needs to be performed.

The four different cell selection methods provided in the embodiments of the present application will be separately described below.

Example one

As shown in FIG. 2, a communication method provided for an application embodiment. In this method, a CPE in an idle state evaluates the network load of a cell, and performs cell reselection based on the network load of the cell. Among them, whether the CPE starts to perform cell reselection based on the load can be combined with the foregoing embodiment. For example, when the CPE determines based on historical data that the load of the cell where it resides within the current time is relatively large, it can start cell reselection based on the load. For another example, when the configured trigger time of the CPE (for example, 9 o'clock every morning) arrives, it can start cell reselection based on the load.

The method includes the following steps:

Step 201: The CPE in the idle state determines the predicted load value of the camping cell according to the resource allocation ratio of the first cell (the first cell in this embodiment refers to the camping cell of the CPE).

Among them, the resource allocation ratio of the camped cell can be calculated as follows:

1) In the uplink direction, the resource allocation ratio of the resident cell = the amount of uplink resources actually allocated for the CPE/the amount of resources required by the CPE.

2) In the downlink direction, the resource allocation ratio of the resident cell=the amount of downlink resources actually allocated for the CPE/the amount of resources required by the network equipment.

Among them, "/" means to divide by. In practical applications, the amount of resources required by the CPE can be represented by the amount of resources requested in the Buffer Size Report (BSR). The amount of resources required by the network equipment can be obtained by the CPE from the network equipment and allocated to the CPE. The amount of resources can be represented by the amount of resources allocated by the uplink grant (UL grant) received by the CPE. It should be noted that when counting the amount of resources requested in the BSR, it is necessary to exclude the amount of resources requested by the BSR that has not received the UL grant over time, that is, when the CPE sends a BSR to request the amount of resources, if the BSR is not received Corresponding to the amount of resources allocated by the UL grant, the amount of resources requested by the BSR is not included in the amount of resources required by the CPE.

As an implementation method, the resource allocation ratio can be obtained by the terminal device itself. For example, after the CPE is started and connected to the first cell, the first cell is the serving cell of the CPE, and the CPE is in the connected state. When the CPE is in the connected state, the CPE can periodically determine the resource allocation ratio of the serving cell and store it. For example, the CPE calculates and stores the resource allocation ratio of the serving cell every 1 hour, so that one or more historical resource allocation ratios are stored in the CPE. For example, referring to Figure 1, the CPE is currently connected to a cell under the network device 1, the CPE can periodically determine the resource allocation ratio of the cell and store it, so that one or more historical information about the cell can be obtained. Resource allocation ratio. When the CPE enters the idle state from the connected state due to a network failure, responding to user operations, or actively disconnecting from the network, the CPE no longer calculates the resource allocation ratio, and the serving cell is also converted to the CPE's Resident cell. When the CPE is in the idle state and camps on the camping cell, the historical resource allocation ratio of the camping cell is stored in the CPE. For example, multiple historical resource allocation ratios of the camping cell can be averaged, or a weighted average can be calculated to obtain the resource allocation ratio of the camping cell. For another example, it is also possible to determine a trend function according to multiple historical resource allocation ratios of the camping cell, and predict the resource allocation ratio of the camping cell at the current moment based on the trend function.

As another implementation method, the resource allocation ratio may also be obtained by the terminal device from a network device (such as a base station, or a server, etc.). For example, the network device may collect the resource allocation ratios reported by different terminal devices in the same cell, and average or weight the collected multiple resource allocation ratios of the cell to obtain the resource allocation ratio of the cell. Then the network device sends the resource allocation ratio of the cell to the terminal device according to the request of the terminal device, or the network device may also periodically send the latest resource allocation ratio to the terminal device under the cell.

After the terminal device obtains the resource allocation ratio of the camping cell, it can determine the predicted load value of the camping cell according to the resource allocation ratio of the camping cell. Among them, the resource allocation ratio of the resident cell is inversely proportional to the predicted load value, that is, the smaller (or lower) the resource allocation ratio, the larger the predicted load value. In the uplink direction, the determined predicted load value of the camping cell is the uplink predicted load value of the camping cell. In the downlink direction, the determined predicted load value of the camping cell is the downlink predicted load value of the camping cell.

Step 202: The CPE measures the RSRP value of the cell where it resides.

The RSRP value here is the current RSRP value of the camping cell measured by the CPE.

For example, the RSRP value here can be the last measured value, or the average value of multiple RSRP values measured in a recent period of time. The embodiment of the present application does not limit the method for determining the RSRP value.

Step 203: The CPE judges whether the trigger condition for cell reselection is met.

Among them, when the following condition 1 and condition 2 are satisfied at the same time, it is determined that the trigger condition for cell reselection is satisfied:

Condition 1: The RSRP value of the camped cell is greater than the preset RSRP threshold.

Condition 2: The predicted load value of the camped cell is greater than the preset load threshold.

Wherein, the RSRP value in the above condition 1 is determined in the above step 202, and the predicted load value in the above condition 2 is determined in the above step 201.

At the same time, the meaning of satisfying the above condition 1 and condition 2 is: the received signal quality of the current camping cell is good, but the load of the camping cell is larger, so the load of the current camping cell is too large, and it is necessary to select a smaller load for the CPE Residing in the cell so that when the CPE enters the connected state in the future, there will be sufficient resources for data transmission.

It should be noted that the reason why the above condition 1 and condition 2 need to be met at the same time to trigger the cell reselection, instead of triggering the cell reselection only when the condition 2 is met, is because the RSRP value of the camped cell is less than or equal to the preset value. In the case of setting the RSRP threshold, even if the load of the camping cell is low, the network equipment may allocate less resources to the CPE, resulting in a lower resource allocation ratio of the camping cell calculated by the CPE, and then the calculation is obtained The predicted load value of the camping cell is larger. In other words, when the RSRP value of the camping cell is less than or equal to the preset RSRP threshold, the calculated predicted load value of the camping cell may not be accurate enough. In other words, the RSRP value of the camping cell is greater than the preset RSRP threshold. The calculated RSRP threshold and the predicted load value of the camping cell are accurate.

It should be noted that the CPE may periodically determine whether the trigger condition for cell reselection is satisfied, and the period may be the same as the period in which the CPE calculates the resource allocation ratio of the camped cell, or may also be different.

Step 204: If the trigger condition for cell reselection is met, the CPE selects a target cell from at least one second cell.

For example, if the trigger condition for cell reselection is met, the CPE selects a target cell from the at least one second cell according to the historical load value of the at least one second cell, where the second cell is different from the first cell. Optionally, the second cell is a neighboring cell of the first cell.

The target cell is the cell where the CPE resides after reselection.

The method for the CPE to determine the target cell, for example, may include the following steps:

Step A: The CPE determines a cell that meets the following three conditions at the same time among at least one second cell.

Condition 1: The RSRP value of the second cell is greater than the preset RSRP threshold.

Condition 2: The historical load value of the second cell is less than the preset load threshold.

Condition 3: The historical load value of the second cell is less than the predicted load value of the camping cell.

Wherein, the preset RSRP threshold value in the first condition may be the same as the preset RSRP threshold value described in step 202, or may also be different.

The preset load threshold value in the second condition may be the same as the preset load threshold value described in step 202, or may also be different.

It should be noted that if the preset load threshold value in the second condition is the same as the preset load threshold value described in step 202 above, then when the second condition is satisfied, the third condition must also be satisfied. Therefore, in this case, This condition three may not be required.

It should be noted that the historical load value of the second cell may be determined by the CPE. For example, the CPE periodically accesses the above-mentioned at least one second cell, and adopts a similar method to that of the first cell determined in step 201. Method to determine the historical load value of the at least one second cell. Alternatively, the CPE may obtain the predicted load value of the at least one second cell from a network device. For example, the network device to which the second cell belongs may collect the resource allocation ratios reported by different terminal devices in the same second cell, and average or weight the collected resource allocation ratios of the second cell. Obtain the resource allocation ratio of the second cell, and further determine the historical load value of the second cell according to the resource allocation ratio of the second cell, and then the network device sends the historical load value of the second cell to the terminal device according to the request of the terminal device Or, the network device may also periodically send the latest historical load value of the second cell to the terminal device under the second cell.

Among them, the second cell that meets the above three conditions at the same time may be referred to as a candidate cell. There can be one or more candidate cells.

In step B, if there is one cell that meets the above three conditions at the same time, the cell is determined to be the target cell, and if there are multiple cells that meet the above three conditions at the same time, one cell is selected as the target cell.

Among them, the method of selecting a cell from multiple cells satisfying the above three conditions, for example, may be: selecting the cell with the smallest predicted load value, or determining a random number according to a random algorithm, and then selecting a random number from the multiple cells according to the random number. Select a cell in.

Step 205: The CPE adjusts the RSRP values of the target cell and the camping cell, so that the reselection criterion is satisfied.

According to the current cell reselection mechanism, the CPE’s camping cell and the reselected cell need to meet the reselection criteria (such as the R criterion). Therefore, in order for the CPE to reselect the target cell selected above, the CPE can follow the reselection criteria. According to the requirements of the criteria, the RSRP values of the target cell and the camping cell are adjusted so that the adjusted RSRP values of the target cell and the camping cell meet the reselection criteria, so that the target cell can be successfully reselected for camping.

For example, the CPE adds a positive number (dB value) to the RSRP value of the target cell and subtracts a positive value (dB value) from the RSRP value of the camping cell, so that the target cell and the camping cell meet the R criterion, thereby satisfying the cell Conditions for re-election.

Step 206: The CPE completes cell reselection and reselects to the target cell to camp on.

After completing the above step 205, the cell reselection conditions are met, and therefore the CPE can reselect to the target cell to camp on.

Optionally, after reselecting to camp on the target cell, the CPE may also determine the load value of the target cell, and then report the load value of the target cell to the network device. The load value here can be the historical load value or the current load value.

Based on the above implementation scheme, the terminal equipment in the idle state (such as CPE) can predict the load of the camping cell, and when the load value of the camping cell exceeds the load threshold, reselect a target cell and reselect to the target cell, Therefore, when the terminal device subsequently enters the connected state, it can be ensured that there are sufficient resources for data transmission of the terminal device, and the communication efficiency of the terminal device can be improved.

As an implementation method, in the above implementation scheme, if the terminal device performs load evaluation for the uplink direction, the RSRP value (including the RSRP value of the camping cell and the second cell) used in the above scheme is the RSRP value in the uplink direction . When the RSRP value used in the above scheme is the RSRP value in the uplink direction, that is, the uplink RSRP value is used to evaluate the signal quality in the uplink direction, the above scheme can also have the following three different alternatives:

As a first alternative implementation solution, the first condition of step 203 can be replaced with: the downlink RSRP value of the camping cell is greater than the preset RSRP threshold, and the first condition of step 204 can be replaced with: second The downlink RSRP value of the cell is greater than the preset RSRP threshold. Based on the first alternative solution, if the downlink RSRP is poor, the uplink RSRP will also be poor. Therefore, the uplink signal quality can be judged according to the downlink RSRP.

As a second alternative implementation solution, the first condition in step 203 can be replaced with: the uplink channel transmit power of the terminal device in the camping cell is greater than the preset transmit power threshold. Based on this second alternative solution, if the transmission power of the uplink channel of the terminal device in the camping cell is large, it indicates that the uplink quality is poor. Therefore, the uplink signal quality can be judged according to the transmission power of the terminal device.

As a third alternative implementation scheme, the condition 1 of the above step 203 can be replaced with: the number of retransmissions of the terminal device sending random access transmission (preamble transmission) in the camping cell is greater than the preset retransmission number threshold . Based on this third alternative solution, if the terminal device sends more preamble transmission retransmissions in the camping cell, it indicates that the uplink quality is poor. Therefore, it can be based on the number of retransmissions sent by the terminal device in the camping cell. Determine the quality of the upstream signal.

Example two

As shown in FIG. 3, a communication method is provided for the application embodiment. In this method, a terminal device in a connected state evaluates the network load of a cell, and performs cell handover based on the network load of the cell. Among them, whether the CPE starts to perform cell reselection based on the load can be combined with the foregoing embodiment. For example, when the CPE determines based on historical data and/or current data that the load of the serving cell in the current time is relatively large, it can start cell switching based on the load. For another example, when the configured trigger time of the CPE (such as 9 o'clock every morning) arrives, it can start cell handover based on the load.

The method includes the following steps:

Step 301: The CPE in the connected state determines the load value of the serving cell according to the resource allocation ratio of the first cell (the first cell in this embodiment refers to the serving cell of the CPE).

Among them, the resource allocation ratio of the serving cell can be calculated as follows:

1). In the uplink direction, the resource allocation ratio of the serving cell = the amount of uplink resources actually allocated for the CPE/the amount of resources required by the CPE.

2) In the downlink direction, the resource allocation ratio of the serving cell = the amount of downlink resources actually allocated for the CPE/the amount of resources required by the network equipment.

As an implementation method, the resource allocation ratio can be obtained by the terminal device itself. For example, after the CPE is started and connected to the first cell, the first cell is the serving cell of the CPE, and the CPE is in the connected state. When the CPE is in the connected state, the CPE can periodically determine the resource allocation ratio of the serving cell and store it. For example, the CPE calculates and stores the resource allocation ratio of the serving cell every 1 hour, so that one or more historical resource allocation ratios are stored in the CPE. For example, referring to Figure 1, the CPE is currently connected to a cell under the network device 1, the CPE can periodically determine the resource allocation ratio of the cell and store it, so that one or more historical information about the cell can be obtained. Resource allocation ratio. For example, multiple historical resource allocation ratios of the serving cell can be averaged, or a weighted average can be calculated to obtain the resource allocation ratio of the serving cell. Alternatively, the multiple historical resource allocation ratios of the serving cell and the current resource allocation ratio are averaged, or a weighted average is calculated, to obtain the resource allocation ratio of the serving cell. Alternatively, a trend function is determined according to multiple historical resource allocation proportions of the serving cell, and the resource allocation proportion of the serving cell at the current moment or the predicted resource allocation proportion of the serving cell at a certain time in the future is determined according to the trend function.

After obtaining the resource allocation ratio of the terminal device, the CPE can determine the current load value or the predicted load value according to the resource allocation ratio. Among them, the resource allocation ratio of the serving cell is inversely proportional to the current load value (or predicted load value) of the serving cell. That is, the smaller the resource allocation ratio of the serving cell, the larger the current load value (or predicted load value) of the serving cell. In the uplink direction, the determined current load value (or predicted load value) of the serving cell is the uplink current load value (or predicted load value) of the serving cell. In the downlink direction, the determined current load value (or predicted load value) of the serving cell is the downlink current load value (or predicted load value) of the serving cell. Step 302: The CPE measures the RSRP value of the serving cell.

The RSRP value here is the current RSRP value of the serving cell measured by the CPE.

Step 303: The CPE judges whether the trigger condition of the cell handover is satisfied.

Among them, when the following condition 1 and condition 2 are satisfied at the same time, it is determined that the trigger condition of the cell handover is satisfied:

Condition 1: The RSRP value of the serving cell is greater than the preset RSRP threshold.

Condition 2: The load value of the serving cell is greater than the preset load threshold.

Wherein, the RSRP value in the above condition one is determined in the above step 302, and the load value in the above condition two is determined in the above step 301. The load value of the serving cell here may be the current load value or the predicted load value of the serving cell.

It should be noted that if the RSRP value of the serving cell in condition one is the uplink RSRP value, then the load value of the serving cell in condition two is the load value of the serving cell in the uplink direction, such as the current load value of the serving cell in the uplink direction. Value and/or predicted load value. If the RSRP value of the serving cell in condition one is the downlink RSRP value, then the load value of the serving cell in condition two is the load value of the serving cell in the downlink direction, and the current load value and/or forecast of the serving cell in the downlink direction Load value.

At the same time, the meaning of satisfying the above condition 1 and condition 2 is: the received signal quality of the current serving cell is good, but the load of the serving cell is relatively large, so it is necessary to select a cell with a small load for the CPE to switch, so that the CPE can have enough Resources for data transmission.

It should be noted that the reason why the above condition 1 and condition 2 need to be met at the same time to trigger the cell handover, instead of triggering the cell handover only when the condition 2 is met, is because the RSRP value in the serving cell is less than or equal to the preset RSRP In the case of the threshold value, even if the load of the serving cell is low, the network equipment may allocate less resources to the CPE, resulting in a lower resource allocation ratio of the serving cell calculated by the CPE, and then the calculated prediction of the serving cell The load value is larger. In other words, when the RSRP value of the serving cell is less than or equal to the preset RSRP threshold, the calculated predicted load value of the serving cell may not be accurate enough. In other words, the RSRP value of the serving cell is greater than the preset RSRP threshold. Limit, the calculated predicted load value of the serving cell is accurate.

It should be noted that the CPE may periodically determine whether the cell handover trigger condition is met, and the period may be the same as or different from the period in which the CPE calculates the resource allocation ratio of the serving cell.

Step 304: If the cell handover trigger condition is met, the CPE selects a target cell from at least one second cell of the serving cell.

For example, if the cell handover trigger condition is met, the CPE selects the target cell from the at least one second cell according to the historical load value of the at least one second cell, where the second cell is different from the first cell. Optionally, the second cell is a neighboring cell of the first cell.

The target cell can be used as the serving cell after the CPE handover.

Condition 3: The historical load value of the second cell is less than the load value of the serving cell.

The preset RSRP threshold value in the condition one may be the same as the preset RSRP threshold value described in step 302, or may be different.

The preset load threshold value in the second condition may be the same as the preset load threshold value described in step 302, or may be different.

It should be noted that if the preset load threshold value in the second condition is less than or equal to the preset load threshold value described in step 302, when the second condition is satisfied, the third condition must also be satisfied. Therefore, in this case , The condition three may not be required.

It should be noted that the historical load value of the second cell may be determined by the CPE. For example, the CPE periodically accesses the above-mentioned at least one second cell and adopts the same method as the current load value of the first cell determined in step 301 ( Or predict load value) similar method to determine the historical load value of the at least one second cell. Alternatively, the CPE may obtain the load value of the at least one second cell from other CPEs or network equipment. For example, the network device to which the second cell belongs may collect the resource allocation ratios reported by different terminal devices in the same second cell, and average or weight the collected resource allocation ratios of the second cell. Obtain the resource allocation ratio of the second cell, and further determine the historical load value of the second cell according to the resource allocation ratio of the second cell, and then the network device sends the historical load value of the second cell to the terminal device according to the request of the terminal device Or, the network device may also periodically send the latest historical load value of the second cell to the terminal device under the second cell.

Step 305: The CPE adjusts the RSRP value of the target cell and the RSRP value of the serving cell, so that the handover criterion is satisfied.

According to the current cell handover mechanism, the CPE’s serving cell and the handover cell need to meet handover criteria (such as the S criterion). Therefore, in order for the CPE to be handed over to the target cell selected above, the CPE can respond to the target cell as required by the handover criterion. The RSRP values of the cell and the serving cell are adjusted so that the adjusted RSRP values of the target cell and the serving cell meet the handover criterion, so that the target cell can be handed over smoothly.

For example, the CPE adds a positive number (dB value) to the RSRP value of the target cell and subtracts a positive value (dB value) from the RSRP value of the serving cell, so that the target cell and the serving cell meet the S criterion, thereby satisfying the cell handover requirement. condition.

In step 306, the CPE completes the cell handover and switches to the target cell.

After completing the above step 305, the cell handover conditions are met, and therefore the CPE can be handed over to the target cell.

Among them, the method for the CPE to switch to the target cell includes but is not limited to:

Method 1: The CPE first enters the idle state for cell reselection, reselects to the target cell, and then the CPE changes from the idle state to the connected state.

Method 2: In the connected state, the CPE performs cell switching according to the instructions of the network equipment, and switches to the target cell.

Optionally, after the CPE switches to the target cell, it may also determine the load value of the target cell, and then report the load value of the target cell to the network device. The load value here can be the historical load value or the current load value.

Based on the above implementation scheme, the terminal equipment in the connected state can determine the load of the serving cell, and when the load value of the serving cell exceeds the load threshold, reselect a target cell and switch to the target cell, thereby ensuring that there is sufficient The resource is used for data transmission of the terminal device, which in turn can improve the communication efficiency of the terminal device.

As an implementation method, in the foregoing implementation solution, if the terminal device performs load evaluation for the uplink direction, the RSRP value (including the RSRP value of the serving cell and the second cell) used in the foregoing solution is the RSRP value in the uplink direction.

When the RSRP value used in the above solution is the RSRP value in the uplink direction, that is, the uplink RSRP value is used to evaluate the signal quality in the uplink direction, the above solution can also have the following two different alternatives:

As a first alternative implementation solution, the condition one in step 303 can also be replaced with: the downlink RSRP value of the serving cell is greater than the preset RSRP threshold, and condition one in step 304 can be replaced with: second The downlink RSRP value of the cell is greater than the preset RSRP threshold. Based on the first alternative solution, if the downlink RSRP is poor, the uplink RSRP will also be poor. Therefore, the uplink signal quality can be judged according to the downlink RSRP.

As a second alternative implementation solution, the condition 1 of the above step 303 can also be replaced with: the transmission power of the uplink channel of the terminal device in the serving cell is greater than the preset transmission power threshold. Based on this second alternative, if the transmission power of the uplink channel of the terminal device in the serving cell is large, it indicates that the uplink quality is poor. Therefore, the uplink signal quality can be judged according to the transmission power of the terminal device.

In the first and second embodiments above, the terminal device determines whether it is necessary to perform cell reselection or cell handover. In other embodiments, the terminal device may also be combined with a cloud device (such as a network device (such as a base station, etc.), a network management device, a cloud server, or a third-party device, etc.) to determine whether a cell handover needs to be performed.

For example, in one embodiment, the cloud device can draw a graph of the network load change trend of each cell or calculate the network load change trend function according to the load level of the serving cell of the CPE reported by multiple CPEs, and then the cloud device can compare the network load of the cell The load change trend graph or network load change trend function is sent to each CPE, so that the CPE can predict the load change of the serving cell or neighboring cell of the CPE based on the network load change trend graph or network load change trend function of the cell, and then based on the service The load change of the cell or neighboring cell determines whether the cell needs to be switched. If the cell needs to be handed over, the corresponding target cell can be selected for handover according to the load change of the serving cell or neighboring cells. For example, the serving cells of CPE1, CPE2, and CPE3 are cell 1, the serving cells of CPE4, CPE5, and CPE6 are cell 2, and the serving cells of CPE7, CPE8, and CPE9 are cell 3. CPE1, CPE2, and CPE3 can periodically report the load level of cell 1 to the cloud device (for the meaning of the load level, please refer to the description in the third embodiment below), and CPE4, CPE5, and CPE6 can periodically report the cell to the cloud device With the load level of 2, CPE7, CPE8, and CPE9 can periodically report the load level of cell 3 to the cloud device, where cell 1, cell 2, and cell 3 are physically neighboring cells. The cloud device can calculate the network load change trend graph of cell 1 based on the load level of cell 1 periodically reported by CPE1, CPE2, CPE3, or calculate the network load change trend function of cell 1, based on the cells periodically reported by CPE4, CPE5, and CPE6 The load level of 2 calculates the network load change trend graph of cell 2, or calculates the network load change trend function of cell 2, and calculates the network load change trend graph of cell 3 based on the load level of cell 3 periodically reported by CPE7, CPE8, and CPE9, Or calculate the trend function of the network load of cell 3. Then, the cloud device can send the network load change trend graph or the network load change trend function of cell 1 to CPE1, CPE2, CPE3, and optionally also send the network load change trend graph of cell 2, and cell 3 to CPE1, CPE2, CPE3 or Network load change trend function. The cloud device can send the network load change trend graph or network load change trend function of cell 2 to CPE4, CPE5, CPE6, and optionally also send the network load change trend graph or network load of cell 1 and cell 3 to CPE4, CPE5, CPE6 Change trend function. The cloud device can send the network load change trend graph or the network load change trend function of cell 3 to CPE7, CPE8, CPE9, and optionally also send the network load change trend graph or network load of cell 1 and cell 2 to CPE7, CPE8, CPE9 Change trend function. Therefore, CPE1 to CPE9 can determine whether the cell needs to be handed over based on the received network load change trend graph or network load change trend function of the serving cell. If the cell needs to be handed over, the corresponding target cell can be selected for handover according to the network load change trend graph or network load change trend function of the serving cell or neighboring cells. For example, take CPE1 as an example. According to the received network load change trend graph or network load change trend function of cell 1, CPE1 judges that the load of cell 1 is heavier at present or at a certain time in the future, and exceeds the preset threshold, then CPE1 Based on the network load change trend graph or network load change trend function of cell 2 and cell 3, a cell with a lighter load can be selected from cell 2 and cell 3 for handover.

For another example, in another embodiment, when the cloud device is a base station, and the base station and the CPE are from the same manufacturer, the base station can directly notify the CPE to perform cell handover when it determines that the uplink grant (UL grant) resources are insufficient. The CPE judges whether to perform cell handover. That is, the base station can determine that when certain conditions are met, the CPE is proactively notified to perform cell handover, which is conducive to improving the user experience of the CPE.

For another example, in another embodiment, when the cloud device is a base station, the CPE can send indication information to the base station through one or more reserved fields in the air interface signaling of the CPE, and the indication information is used to indicate not to perform cell handover , The subsequent base station will not send a handover instruction to the CPE. For example, when the CPE determines that the service type of the CPE is a low-latency service, or the user configures the CPE not to perform network optimization, the CPE may carry the above indication information in one or more reserved fields of the air interface signaling and send it to the base station.

Of course, the embodiments of the present application also provide other embodiments (such as the third and fourth embodiments below), and the CPE and the cloud device are combined to determine whether a cell handover needs to be performed.

Example three

As shown in Figure 4, a communication method is provided for the application embodiment. In this method, the cloud device evaluates the network load of the cell. The terminal device determines whether to perform cell handover based on the query result obtained from the cloud device. When the cell handover condition is met At this time, the terminal device selects a cell from at least one second cell as the cell after the handover.

The cloud device here can be a network device (such as a base station, etc.), or a network management device, a cloud server, or a third-party device, etc.

The method includes the following steps:

Step 401: The CPE sends the information of the first cell (the first cell in this embodiment refers to the serving cell of the CPE) to the cloud device, where the information of the serving cell includes the identity of the serving cell and the link signal quality information of the serving cell And the resource allocation ratio of the serving cell.

Wherein, the link signal quality information of the serving cell includes the uplink RSRP value and/or the downlink RSRP value of the serving cell.

Alternatively, the link signal quality information of the serving cell includes the link signal quality level of the serving cell. For example, the link signal quality level may be determined according to the uplink RSRP value and/or the downlink RSRP value of the serving cell. As an example, the link signal quality level is divided into 5 levels in advance. The upper RSRP value is an example. Each level corresponds to an uplink RSRP value interval. There is no intersection between different uplink RSRP value intervals. The collection of all uplink RSRP value intervals Cover all uplink RSRP values. For another example, the link signal quality level may also be determined according to the uplink transmit power of the CPE. As an example, the link signal quality level is divided into 5 levels in advance, and each level corresponds to an uplink transmission power interval. Different transmission power intervals have no intersection, and the collection of all transmission power intervals covers all possible uplink transmission powers.

For the method for determining the resource allocation ratio, reference may be made to the related description of step 301 in the embodiment corresponding to FIG. 3, and details are not described herein again.

It should be noted that after the CPE is started and connected to the first cell, the first cell is the serving cell of the CPE. The CPE may periodically send the link signal quality information of the serving cell to the cloud device, or it may be in After determining that the measured RSRP value of the serving cell is greater than the preset RSRP threshold, the link signal quality information of the serving cell is sent to the cloud device. Taking cloud devices as network devices as an example, referring to Figure 1, CPE is currently connected to a cell under network device 1, then CPE can periodically send cell 1 link signal quality information to network device 1, for example, including uplink The RSRP value and/or the downlink RSRP value, or the link signal quality level of cell 1.

Step 402: The cloud device determines and records the load level of the serving cell.

As an implementation method, the load levels of the serving cell can be divided into N levels in advance, and N is greater than or equal to 2. Specifically, it may be configured by the user, or it may be classified by the cloud device according to a preset policy. As an example, the load levels of the serving cell are divided into 5 levels in advance, and each level corresponds to a resource allocation ratio interval. Different resource allocation ratio intervals have no intersection, and the collection of all resource allocation ratio intervals covers all resource allocation ratios. Among them, the higher the load level, the heavier the cell load, and correspondingly, the smaller the value of the resource allocation ratio interval.

Since the same cell can be configured as the serving cell of multiple CPEs, the cloud device can receive link signal quality information and resource allocation ratios reported by multiple CPEs in the same serving cell within a set time period. According to the link signal quality information, the cloud device sorts out a part of the resource allocation ratio from the multiple reported resource allocation ratios and takes the average value, and then the cloud device determines the load level of the serving cell according to the resource allocation ratio interval to which the average value belongs .

For example, within the set time period, CPE1 in cell 1 reports (RSRP1, resource allocation ratio 1), CPE2 in cell 1 reports (RSRP2, resource allocation ratio 2), and CPE3 in cell 1 reports (RSRP3, resource allocation ratio) 3) The CPE4 in the cell 1 reports (RSRP4, scale 4), which is the serving cell of CPE1, CPE2, CPE3, and CPE4. Among them, RSRP2, RSRP3, and RSRP4 are greater than the preset RSRP threshold, and RSRP1 is less than the preset RSRP threshold, the cloud device calculates the average of resource allocation ratio 2, resource allocation ratio 3, and resource allocation ratio 4, and then determines The resource allocation ratio interval to which the average value belongs is used to determine the load level of the serving cell.

For another example, within the set time period, CPE1 in cell 1 reports (link signal quality level 1, resource allocation ratio 1), and CPE2 in cell 1 reports (link signal quality level 2, resource allocation ratio 2), and the cell Reported by CPE3 in 1 (link signal quality level 3, resource allocation ratio 3), and reported by CPE4 in cell 1 (link signal quality level 2, ratio 4). This cell 1 is served by CPE1, CPE2, CPE3, and CPE4 Community. Among them, if the link signal quality level reported by CPE2, CPE3, and CPE4 is greater than the preset link signal quality level 1, the cloud device calculates the average value of the resource allocation ratio 2, the resource allocation ratio 3, and the resource allocation ratio 4, and then determines the The resource allocation ratio interval to which the average value belongs, and then determines the load level of the serving cell.

It should be noted that the cloud device can record the load levels of multiple cells. For example, the cloud device can determine the load level of the cell according to the link signal quality information and resource allocation ratio reported by multiple CPEs in each cell.

Step 403: The CPE sends a request message to the cloud device for requesting to query the load level of the serving cell and the at least one second cell.

The request message in step 403 includes a cell identity list, where the cell identity list includes the identity of the serving cell and the identity of at least one second cell. The second cell here is different from the serving cell. Optionally, the at least one second cell may be a neighboring cell of the first cell, where the neighboring cell may be all neighboring cells of the serving cell, or may also be a neighboring cell whose RSRP value is greater than a preset RSRP threshold.

Optionally, if the cloud device records an uplink load level and a downlink load level for a cell at the same time, the request message in this step 403 may also carry a query type, and the query type may be downlink only ( DL only, or uplink only (UL only), or both DL and UL. Among them, downlink only refers to querying the load level in the downlink direction only, uplink only refers to querying the load level in the uplink direction only, and uplink and downlink refers to querying the load level in both the uplink direction and the downlink direction at the same time.

The methods for triggering the CPE to send a request message to the cloud device include but are not limited to:

Method one, periodic trigger

That is, the CPE periodically sends a request message for requesting to query the load level of the serving cell and the at least one second cell to the cloud device.

Method two, event trigger

For example, if the CPE determines that the measured RSRP value of the serving cell is greater than the preset RSRP threshold, and the resource allocation ratio of the serving cell is less than the preset ratio threshold, the CPE sends to the cloud device a request to query the serving cell and At least one request message for the load level of the second cell.

Through the above method 1 or method 2, the CPE can be triggered to request the cloud device to obtain the load level of the serving cell and at least one second cell.

Step 404: The CPE receives the load level of the serving cell and the at least one second cell from the cloud device.

Step 405: The CPE judges whether the trigger condition of the cell handover is satisfied according to the load level of the serving cell.

For example, when the load level of the serving cell is greater than the preset load level threshold, indicating that the load of the serving cell is heavy, the trigger condition for cell handover is satisfied. As an example, the load is divided into 5 levels in advance, and the preset load level threshold is 3. Therefore, when the CPE queries from the cloud device that the load level of the serving cell is 4 or 5, the cell handover trigger condition is met.

Step 406: If the trigger condition for the cell handover is met, the CPE selects a target cell from at least one second cell.

It should be noted that the at least one second cell here refers to the cell indicated by the identity of the at least one second cell carried in the request message in step 403.

The target cell can be used as the serving cell after the CPE handover.

The method for the CPE to select the target cell, for example, may include the following steps:

Condition 2: The load level of the second cell is less than the preset load level threshold.

Condition 3: The load level of the second cell is less than the load level of the serving cell.

It should be noted that if the preset load level threshold in the second condition is less than or equal to the preset load level threshold described in step 405 above, when the second condition is satisfied, the third condition must be satisfied, so the Under circumstances, the condition three may not be required.

It should be noted that the load level of the second cell is obtained in step 404 above.

In step B, if there is only one cell that meets the above three conditions at the same time, the cell is determined to be the target cell, and if there are multiple cells that meet the above three conditions at the same time, one cell is selected as the target cell.

Among them, the method of selecting a cell from multiple cells satisfying the above three conditions at the same time, for example, may be: selecting the cell with the smallest predicted load level, or determining a random number according to a random algorithm, and then selecting a random number from the above-mentioned multiple cells according to the random number. Select a cell in.

Step 407: The CPE adjusts the RSRP value of the target cell and the RSRP value of the serving cell, so that the handover criterion is satisfied.

In step 408, the CPE completes the cell handover and switches to the target cell.

After the above step 407 is completed, the cell handover conditions are met, and therefore the CPE can be handed over to the target cell.

For example, a timer can be set. When the timer expires, the transmission of "heartbeat" data is stopped for several times, so that the CPE enters the idle state, or the CPE stops the transmission of "heartbeat" data for several times when no business is in progress. Enter the idle state. After the CPE enters the idle state, it completes the cell reselection, and then enters the connected state after reselecting the target cell.

Optionally, after the CPE switches to the target cell, it may also determine the information of the target cell, for example, including the identity of the target cell, link signal quality information, and resource allocation ratio, and then report the target cell information to the network device.

Based on the above implementation solution, a terminal device (such as a CPE) in a connected state can obtain the load level of the serving cell and at least one second cell from the cloud device, and when the load level of the serving cell exceeds the preset load level threshold, Reselecting a target cell and switching to the target cell can ensure that there are sufficient resources for the data transmission of the terminal device, thereby improving the communication efficiency of the terminal device.

Embodiment four

As shown in Figure 5, another communication method provided by the application embodiment is that the cloud device evaluates the network load of the cell, and after receiving the request message from the terminal device, it determines a target cell that meets the conditions and informs it The terminal device switches to the target cell.

The cloud device here can be a network device (such as a base station, etc.), a network management device, or a cloud server, or a third-party device, etc.

The method includes the following steps:

Steps 501 to 502 are the same as steps 401 to 402 of the embodiment corresponding to FIG. 4.

Step 503: The CPE sends a request message to the cloud device for requesting information about the target cell.

The target cell is a cell with low network load recommended by the cloud device. Optionally, the target cell is a neighboring cell of the serving cell of the CPE.

The request message in step 503 includes the cell identity list and the RSRP value of each cell in the cell identity list measured by the CPE, where the cell identity list includes the identity of the serving cell and the identity of at least one second cell. The second cell here is different from the serving cell. Optionally, the at least one second cell may be a neighboring cell of the first cell, where the neighboring cell may be all neighboring cells of the serving cell, or may also be a neighboring cell whose RSRP value is greater than a preset RSRP threshold. For example, the request message includes cell ID1, cell ID2, cell ID3, RSRP1, RSRP2, and RSRP3, where the cell corresponding to cell ID1 is the serving cell of CPE, the cell corresponding to cell ID2 is neighboring cell 1 of the CPE serving cell, and cell ID3 corresponds to The cell is the neighboring cell 2 of the serving cell of the CPE, RSRP1 is the RSRP value of the serving cell measured by the CPE, RSRP2 is the RSRP value of the neighboring cell 1 of the serving cell measured by the CPE, and RSRP3 is the neighboring cell of the serving cell measured by the CPE The RSRP value of zone 2.

Method one, periodic trigger

That is, the CPE periodically sends a request message for requesting to obtain information of the target cell to the cloud device.

Method two, event trigger

For example, if the CPE determines that the measured RSRP value of the serving cell is greater than the preset RSRP threshold, and the resource allocation ratio of the serving cell is less than the preset ratio threshold, the CPE sends a request for obtaining the target cell to the cloud device. Information request message.

Through the above method 1 or method 2, the CPE can be triggered to request the cloud device to obtain the information of the target cell.

Step 504: The cloud device judges whether the trigger condition of the cell handover is satisfied according to the load level of the serving cell.

For example, when the load level of the serving cell is greater than the preset load level threshold, indicating that the load of the serving cell is heavy, the trigger condition for cell handover is satisfied. As an example, the load is divided into 5 levels in advance, and the preset load level threshold is 3. Therefore, when the cloud device finds that the load level of the serving cell is 4 or 5, the trigger condition for cell handover is satisfied.

Step 505: If the trigger condition of the cell handover is met, the cloud device selects a target cell from at least one second cell.

It should be noted that the second cell here refers to the cell indicated by the identifier of the second cell carried in the request message in step 503.

The method for the cloud device to select the target cell from the at least one second cell is similar to the method for the CPE to select the target cell from the at least one second cell in step 406 in the embodiment corresponding to FIG. 4, and reference may be made to the foregoing description.

Step 506: The cloud device sends the information of the target cell to the CPE, which may be, for example, the identity of the target cell.

It should be noted that if it is determined in step 504 that the cell handover trigger condition is not met, or the target cell that meets the condition is not found in step 505, step 506 can be replaced with: the cloud device sends an indication message to the CPE, Used to indicate that no suitable target cell is found, or no information is sent.

Step 507 to step 508 are the same as step 407 to step 408 of the embodiment corresponding to FIG. 4.

It can be understood that, in each of the foregoing method embodiments, corresponding to the steps or operations implemented by the terminal device, they can also be implemented by components (such as chips or circuits) configured in the terminal device, corresponding to the steps or operations implemented by the cloud device. It can be implemented by a component (such as a chip or a circuit) configured in a cloud device.

Refer to FIG. 8, which is a schematic diagram of a communication device provided by an embodiment of this application. The device is used to implement the steps performed by the corresponding terminal device in the above-mentioned embodiments of FIG. 2 to FIG. 5. As shown in FIG. 8, the device 800 includes a transceiver unit 810 and a processing unit 820.

In the first embodiment:

The processing unit 820 is configured to determine the load value of the first cell according to the resource allocation ratio of the first cell, where the resource allocation ratio of the first cell is obtained according to the amount of uplink resources actually allocated to the terminal device; The RSRP value of the first cell is measured; the load value of the first cell and the RSRP value of the first cell are used to determine whether the first cell meets the trigger condition for cell replacement; if the trigger for cell replacement is met The condition is to select a target cell from the at least one second cell according to the historical load value of the at least one second cell, where the second cell is different from the first cell; change to the target cell.

In a possible implementation method, the processing unit 820 is configured to determine whether the first cell meets the trigger condition for cell replacement according to the load value of the first cell and the RSRP value of the first cell, Specifically, it includes: if the RSRP value of the first cell is greater than a preset first RSRP threshold, and the load value of the first cell is greater than a preset first load threshold, determine the first A cell satisfies the trigger condition for cell replacement.

In a possible implementation method, the processing unit 820 is configured to select a target cell from the at least one second cell according to the historical load value of the at least one second cell, specifically including: A candidate cell is selected from the second cell, the RSRP value of the candidate cell is greater than the preset second RSRP threshold, the historical load value of the candidate cell is less than the preset second load threshold, and the candidate cell The historical load value of is smaller than the load value of the first cell; a cell is selected from the candidate cells according to a preset rule as the target cell.

In a possible implementation method, the processing unit 820 is configured to select a cell from the candidate cells as the target cell according to a preset rule, specifically including: selecting the candidate cell with the smallest load value As the target cell; or, used to determine a random number according to a random number algorithm, and select a cell from the candidate cells according to the random number as the target cell.

In a possible implementation method, the processing unit 820 is further configured to determine the resource allocation ratio of the first cell according to the amount of uplink resources actually allocated to the terminal device and the amount of resources required by the terminal device. The resource allocation ratio is the uplink resource allocation ratio of the first cell; or, the resource allocation ratio of the first cell is determined according to the amount of uplink resources actually allocated to the terminal device and the amount of resources required by the network device , The resource allocation ratio is a downlink resource allocation ratio of the first cell.

In a possible implementation method, the historical resource allocation ratio of the first cell is measured by the communication device, or acquired from a network device.

In a possible implementation method, the processing unit 820 is further configured to periodically access the at least one second cell and obtain the historical load value of the at least one second cell.

In a possible implementation method, the processing unit 820 is further configured to determine the load value of the target cell; the transceiver unit 810 is configured to report the load value of the target cell to the network device.

In a possible implementation method, the processing unit 820 is further configured to adjust the RSRP values of the first cell and the target cell before changing to the target cell, so that the reselection rule or the handover rule is satisfied.

In a possible implementation method, the first cell is the camping cell of the terminal device in the idle state, and the cell is changed to cell reselection; or, the first cell is the cell of the terminal device in the connected state. The serving cell is changed to a cell handover.

In the second embodiment:

The transceiver unit 810 is configured to send a request message to the cloud device, the request message including identification information of at least two cells, the at least two cells including a first cell and at least one second cell, and the request message is used to request Acquire the load levels of the at least two cells, the first cell is the serving cell of the terminal device, and the second cell is different from the first cell; and the at least two cells are received from the cloud device The processing unit 820 is configured to, if the load level of the first cell is greater than the preset first load level threshold, according to the load level of the at least one second cell, from the at least one first cell Select a target cell from the second cell; switch to the target cell.

In a possible implementation method, the processing unit 820 is configured to select a target cell from the at least one second cell according to the load level of the at least one second cell, which specifically includes:

Used to select a candidate cell from the at least one second cell, the RSRP value of the candidate cell is greater than a preset first RSRP threshold, and the load level of the candidate cell is less than a preset second load level threshold Value and the load level of the candidate cell is less than the load level of the first cell; a cell is selected from the candidate cells according to a preset rule as the target cell.

In a possible implementation method, the processing unit 820 is further configured to determine that the period for sending the request message arrives before the transceiver unit 810 sends the request message to the cloud device; or, determine that the RSRP value of the first cell is greater than The preset second RSRP threshold value and the load value of the first cell are greater than the preset load threshold value.

In a possible implementation method, the transceiver unit 810 is further configured to send information of the first cell to the cloud device before sending a request message to the cloud device, where the information of the first cell includes the first cell The identification information of the cell, the link signal quality information of the first cell, and the resource allocation ratio of the first cell, and the information of the first cell is used by the cloud device to determine the load level of the first cell.

In a possible implementation method, the processing unit 820 is further configured to adjust the RSRP values of the first cell and the target cell before handover to the target cell, so that the handover rule is satisfied.

In the third embodiment:

The transceiver unit 810 is configured to send a request message to a cloud device, the request message including identification information of at least two cells and RSRP values corresponding to the at least two cells, and the at least two cells include the first A cell and at least one second cell, the request message is used to request the identification information of the target cell after handover, the first cell is the serving cell of the terminal device, and the second cell is the same as the first cell Different; receiving the identification information of the target cell from the cloud device; the processing unit 820 is configured to switch to the target cell.

In a possible implementation method, the processing unit 820 is further configured to determine that the period for sending the request message arrives before the transceiver unit 810 sends the request message to the cloud device; or, determine that the RSRP value of the first cell is greater than The preset RSRP threshold value and the load value of the first cell are greater than the preset load threshold value.

Optionally, the above-mentioned communication device 800 may further include a storage unit for storing data or instructions (also referred to as codes or programs), and each of the above-mentioned units may interact or couple with the storage unit to implement the corresponding method or Features. For example, the processing unit 820 may read data or instructions in the storage unit, so that the communication device implements the method in the foregoing embodiment.

It should be understood that the division of units in the above device is only a division of logical functions, and may be fully or partially integrated into one physical entity in actual implementation, or may be physically separated. In addition, the units in the device can be all implemented in the form of software called by processing elements; they can also be all implemented in the form of hardware; part of the units can also be implemented in the form of software called by the processing elements, and some of the units can be implemented in the form of hardware. For example, each unit can be a separately set up processing element, or it can be integrated in a certain chip of the device for implementation. In addition, it can also be stored in the memory in the form of a program, which is called and executed by a certain processing element of the device. Features. In addition, all or part of these units can be integrated together or implemented independently. The processing element described here can also become a processor, which can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above units may be implemented by an integrated logic circuit of hardware in a processor element or implemented in a form of being called by software through a processing element.

In an example, the unit in any of the above devices may be one or more integrated circuits configured to implement the above method, for example: one or more application specific integrated circuits (ASIC), or, one or Multiple microprocessors (digital singnal processors, DSPs), or, one or more field programmable gate arrays (Field Programmable Gate Arrays, FPGAs), or a combination of at least two of these integrated circuits. For another example, when the unit in the device can be implemented in the form of a processing element scheduler, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call programs. For another example, these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).

The above transceiver unit 810 is an interface circuit of the device, and is used to send signals to or receive signals from other devices. For example, when the device is implemented in the form of a chip, the transceiver unit 810 is an interface circuit used by the chip to send signals to or receive signals from other chips or devices.

Refer to FIG. 9, which is a schematic diagram of another communication device provided by an embodiment of this application. The device is used to implement the steps performed by the corresponding cloud device in the above-mentioned embodiments of FIG. 4 to FIG. 5. As shown in FIG. 9, the device 900 includes a transceiver unit 910 and a processing unit 920.

In the first embodiment:

The transceiving unit 910 is configured to receive a request message from a first terminal device, the request message including identification information of at least two cells, the at least two cells including a first cell of the first terminal device and at least one second cell A cell, where the request message is used to request to obtain the load levels of the at least two cells, the first cell is a serving cell of the first terminal device, and the second cell is different from the first cell; The first terminal device sends the load levels of the at least two cells, and the load levels of the at least two cells are used for the first terminal device to select a target cell for handover.

In a possible implementation method, the transceiver unit 910 is further configured to receive first information of the first cell from the first terminal device, where the first information includes the identification information of the first cell, the The first link signal quality information of the first cell and the first resource allocation ratio of the first cell; receiving the second information of the first cell from at least one second terminal device in the first cell, The second information includes the identification information of the first cell, the second link signal quality information of the first cell, and the second resource allocation ratio of the first cell, and the first cell is the first cell. 2. Serving cell of the terminal device; the processing unit 920 is configured to determine the load level of the first cell according to the first information and the second information.

In a possible implementation method, the processing unit 920 is configured to determine the load level of the first cell according to the first information and the second information, specifically including: being configured to determine the load level of the first cell according to the first information and The second information determines at least one resource allocation ratio, and the link signal quality information corresponding to the at least one resource allocation ratio meets a preset link signal quality requirement; and the at least one resource allocation ratio is determined according to the at least one resource allocation ratio. State the load level of the first cell.

In the second embodiment:

The transceiver unit 910 is configured to receive a request message from a first terminal device, the request message including identification information of at least two cells and RSRP values corresponding to the at least two cells respectively, and the at least two cells include the first cell And at least one second cell, the request message is used to request to obtain the identification information of the target cell after the terminal device is handed over, the first cell is the serving cell of the first terminal device, and the second cell is The first cell is different; the identification information of the target cell is sent to the first terminal device, where the identification information of the target cell is used for the first terminal device to switch to the target cell; the processing unit 920 is configured to: The load level of the first cell is greater than the preset first load level threshold, and the target cell is selected from the at least one second cell according to the load level of the at least one second cell.

In a possible implementation method, the processing unit 920 is configured to select the target cell from the at least one second cell according to the load level of the at least one second cell, specifically including: A candidate cell is selected from at least one second cell, the RSRP value of the candidate cell is greater than the preset RSRP threshold, the load level of the candidate cell is less than the preset second load level threshold, and the candidate cell The load level of is smaller than the load level of the first cell; it is used to select a cell from the candidate cells according to a preset rule as the target cell.

In a possible implementation method, the processing unit 920 is configured to select a cell from the candidate cells as the target cell according to a preset rule, specifically including: selecting the candidate cell with the smallest load value As the target cell; or, used to determine a random number according to a random number algorithm, and select a cell from the candidate cells according to the random number as the target cell.

In a possible implementation method, the transceiver unit 910 is further configured to receive first information of the first cell from the first terminal device, where the first information includes the identification information of the first cell, the The first link signal quality information of the first cell and the first resource allocation ratio of the first cell; receiving the second information of the first cell from at least one second terminal device in the first cell, The second information includes the identification information of the first cell, the second link signal quality information of the first cell, and the second resource allocation ratio of the first cell, and the first cell is the first cell. 2. Serving cell of the terminal device; the processing unit 920 is further configured to determine the load level of the first cell according to the first information and the second information.

In a possible implementation method, the processing unit 920 is configured to determine the load level of the first cell according to the first information and the second information, specifically including: being configured to determine the load level of the first cell according to the first information and The second information determines at least one resource allocation ratio, and the link signal quality information corresponding to the at least one resource allocation ratio meets a preset link signal quality requirement; and is used according to the at least one resource allocation ratio, Determine the load level of the first cell.

Optionally, the aforementioned communication device 900 may further include a storage unit for storing data or instructions (also referred to as codes or programs), and each of the aforementioned units may interact or couple with the storage unit to implement corresponding methods or Features.

In an example, the unit in any of the above devices may be one or more integrated circuits configured to implement the above method, for example: one or more specific integrated circuits (ASIC), or, one or more microprocessors (DSP), or, one or more field programmable gate arrays (FPGA), or a combination of at least two of these integrated circuit forms. For another example, when the unit in the device can be implemented in the form of a processing element scheduler, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call programs. For another example, these units can be integrated together and implemented in the form of a system-on-chip (SOC).

The above transceiver unit 910 is an interface circuit of the device, and is used to send signals to or receive signals from other devices. For example, when the device is implemented in the form of a chip, the transceiver unit 910 is an interface circuit used by the chip to send signals to or receive signals from other chips or devices.

Referring to FIG. 10, a schematic diagram of a cloud device provided in an embodiment of this application is used to implement the operation of the cloud device in the above embodiment. As shown in FIG. 10, the cloud device includes a processor 1010 and an interface 1030. Optionally, the cloud device further includes a memory 1020. The interface 1030 is used to implement communication with other devices.

The method executed by the cloud device in the above embodiment can be implemented by the processor 1010 calling a program stored in a memory (which may be the memory 1020 in the cloud device or an external memory). That is, the cloud device may include a processor 1010, and the processor 1010 executes the method executed by the cloud device in the above method embodiment by calling a program in the memory. The processor here may be an integrated circuit with signal processing capability, such as a CPU. The cloud device can be implemented by one or more integrated circuits configured to implement the above method. For example: one or more ASICs, or, one or more microprocessors DSP, or, one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms. Or, the above implementations can be combined.

Specifically, the functions/implementation process of the transceiver unit 910 and the processing unit 920 in FIG. 9 may be implemented by the processor 1010 in the cloud device 1000 shown in FIG. 10 calling computer executable instructions stored in the memory 1020. Alternatively, the function/implementation process of the processing unit 920 in FIG. 9 can be implemented by the processor 1010 in the cloud device 1000 shown in FIG. /The implementation process can be implemented through the interface 1030 in the cloud device 1000 shown in FIG. 10.

Refer to FIG. 11, which is a schematic structural diagram of a terminal device provided by an embodiment of this application. The terminal device is used to implement the operation of the terminal device in the above embodiments. As shown in FIG. 11, the terminal equipment includes: an antenna 1110, a radio frequency device 1120, and a signal processing part 1130. The antenna 1110 is connected to the radio frequency device 1120. In the downlink direction, the radio frequency device 1120 receives information sent by the network device or cloud device through the antenna 1110, and sends the information sent by the network device or cloud device to the signal processing part 1130 for processing. In the upstream direction, the signal processing part 1130 processes the information of the terminal device and sends it to the radio frequency device 1120. The radio frequency device 1120 processes the information of the terminal device and sends it to the network device or cloud device via the antenna 1110.

The signal processing part 1130 is used to realize the processing of each communication protocol layer of the data. The signal processing part 1130 may be a subsystem of the terminal device, and the terminal device may also include other subsystems, such as a central processing subsystem, which is used to process the operating system and application layer of the terminal device; another example is the peripheral sub-system. The system is used to realize the connection with other equipment. The signal processing part 1130 may be a separately provided chip. Optionally, the above devices may be located in the signal processing part 1130.

The signal processing part 1130 may include one or more processing elements 1131, for example, a main control CPU and other integrated circuits, and an interface circuit 1133. In addition, the signal processing part 1130 may further include a storage element 1132. The storage element 1132 is used to store data and programs. The program used to execute the method performed by the terminal device in the above method may or may not be stored in the storage element 1132, for example, stored in a memory other than the signal processing part 1130 During use, the signal processing part 1130 loads the program into the cache for use. The interface circuit 1133 is used to communicate with the device. The above devices may be located in the signal processing part 1130, and the signal processing part 1130 may be realized by a chip. The chip includes at least one processing element and an interface circuit. The circuit is used to communicate with other devices. In one implementation, the unit that implements each step in the above method can be implemented in the form of a processing element scheduler. For example, the device includes a processing element and a storage element, and the processing element calls a program stored by the storage element to execute the above method embodiments. The method executed by the terminal device. The storage element may be a storage element whose processing element is on the same chip, that is, an on-chip storage element.

In another implementation, the program used to execute the method executed by the terminal device in the above method may be a storage element on a different chip from the processing element, that is, an off-chip storage element. At this time, the processing element calls or loads a program from the off-chip storage element on the on-chip storage element to call and execute the method executed by the terminal device in the above method embodiment.

In yet another implementation, the unit of the terminal device that implements each step in the above method may be configured as one or more processing elements, and these processing elements are provided on the signal processing part 1130, where the processing elements may be integrated circuits, for example : One or more ASICs, or, one or more DSPs, or, one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip.

The units that implement each step in the above method can be integrated together and implemented in the form of a system-on-a-chip (SOC), and the SOC chip is used to implement the above method. The chip can integrate at least one processing element and a storage element, and the processing element can call the stored program of the storage element to implement the method executed by the above terminal device; or, the chip can integrate at least one integrated circuit to implement the above terminal The method executed by the device; or, it can be combined with the above implementations. The functions of some units are implemented in the form of calling programs by processing elements, and the functions of some units are implemented in the form of integrated circuits.

It can be seen that the above apparatus may include at least one processing element and an interface circuit, wherein at least one processing element is used to execute any method executed by the terminal device provided in the above method embodiment. The processing element can execute part or all of the steps executed by the terminal device in the first way: calling the program stored in the storage element; or in the second way: combining instructions through the integrated logic circuit of the hardware in the processor element Part or all of the steps executed by the terminal device are executed in the manner; of course, part or all of the steps executed by the terminal device may also be executed in combination with the first manner and the second manner.

The processing element here is the same as the above description, and it can be a general-purpose processor, such as a CPU, or one or more integrated circuits configured to implement the above method, such as: one or more ASICs, or, one or more micro-processing DSP, or, one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms. The storage element can be a memory or a collective term for multiple storage elements.

A person of ordinary skill in the art can understand that the various digital numbers such as first and second involved in the present application are only for easy distinction for description, and are not used to limit the scope of the embodiments of the present application, but also indicate a sequence. "And/or" describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects before and after are in an "or" relationship. "At least one" means one or more. At least two refers to two or more. "At least one", "any one" or similar expressions refer to any combination of these items, including any combination of a single item (a) or a plurality of items (a). For example, at least one of a, b, or c (a, kind) can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or Multiple. "Multiple" refers to two or more, and other quantifiers are similar.

It should be understood that in the various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present invention. The implementation process constitutes any limitation.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

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

The various illustrative logic units and circuits described in the embodiments of this application can be implemented by general-purpose processors, digital signal processors, application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, Discrete gates or transistor logic, discrete hardware components, or any combination of the above are designed to implement or operate the described functions. The general-purpose processor may be a microprocessor. Alternatively, the general-purpose processor may also be any traditional processor, controller, microcontroller, or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration. accomplish.

The steps of the method or algorithm described in the embodiments of the present application can be directly embedded in hardware, a software unit executed by a processor, or a combination of the two. The software unit can be stored in random access memory (Random Access Memory, RAM), flash memory, read-only memory (Read-Only Memory, ROM), EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or this In any other form of storage media in the field. Exemplarily, the storage medium may be connected to the processor, so that the processor can read information from the storage medium, and can store and write information to the storage medium. Optionally, the storage medium may also be integrated into the processor. The processor and the storage medium can be arranged in the ASIC.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

In one or more exemplary designs, the aforementioned functions described in this application can be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, these functions can be stored on a computer-readable medium, or transmitted on a computer-readable medium in the form of one or more instructions or codes. Computer-readable media include computer storage media and communication media that facilitate the transfer of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special computer. For example, such computer-readable media may include, but are not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other device that can be used to carry or store instructions or data structures and Other program code media that can be read by general-purpose or special computers, or general-purpose or special processors. In addition, any connection can be appropriately defined as a computer-readable medium, for example, if the software is from a website, server, or other remote source through a coaxial cable, fiber optic computer, twisted pair, or digital subscriber line (DSL) Or transmitted by wireless means such as infrared, wireless and microwave are also included in the definition of computer-readable media. The said disks and discs include compressed disks, laser disks, optical disks, digital versatile disks (English: Digital Versatile Disc, abbreviated as: DVD), floppy disks and Blu-ray disks. Disks usually copy data with magnetism. Discs usually use lasers to copy data optically. The combination of the above can also be contained in a computer readable medium.

Those skilled in the art should be aware that, in one or more of the foregoing examples, the functions described in this application can be implemented by hardware, software, firmware, or any combination thereof. When implemented by software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on the computer-readable medium. The computer-readable medium includes a computer storage medium and a communication medium, where the communication medium includes any medium that facilitates the transfer of a computer program from one place to another. The storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

The specific implementations described above further describe the purpose, technical solutions, and beneficial effects of the application. It should be understood that the foregoing are only specific implementations of the application and are not intended to limit the scope of the application. The scope of protection, any modification, equivalent replacement, improvement, etc. made on the basis of the technical solution of this application shall be included in the scope of protection of this application. The above description in the specification of this application can enable any technology in the field to utilize or realize the content of this application. Any modification based on the disclosed content should be considered obvious in the art. The basic principles described in this application can be applied to other modifications. Without departing from the nature and scope of the invention of this application. Therefore, the content disclosed in this application is not only limited to the described embodiments and designs, but can also be extended to the maximum range consistent with the principles of this application and the new features disclosed.

Although the application has been described in combination with specific features and embodiments, it is obvious that various modifications and combinations can be made without departing from the spirit and scope of the application. Correspondingly, the specification and drawings are merely exemplary descriptions of the application as defined by the appended claims, and are deemed to have covered any and all modifications, changes, combinations or equivalents within the scope of the application. Obviously, those skilled in the art can make various changes and modifications to the application without departing from the scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims

A communication method, characterized in that it comprises:

The terminal device determines the load value of the first cell according to the resource allocation ratio of the first cell, where the resource allocation ratio of the first cell is obtained according to the amount of uplink resources actually allocated to the terminal device;

The terminal device measures the RSRP value of the reference signal received power of the first cell;

The terminal device determines whether the first cell meets the trigger condition for cell replacement according to the load value of the first cell and the RSRP value of the first cell;

If the trigger condition for cell change is met, the terminal device selects a target cell from the at least one second cell according to the historical load value of the at least one second cell, where the second cell is different from the first cell;

The terminal device is changed to the target cell.
The method according to claim 1, wherein the terminal device determines whether the first cell meets the trigger condition for cell replacement according to the load value of the first cell and the RSRP value of the first cell, include:

If the RSRP value of the first cell is greater than the preset first RSRP threshold, and the load value of the first cell is greater than the preset first load threshold, the terminal device determines the first The cell meets the trigger condition for cell replacement.
The method according to claim 1 or 2, wherein the terminal device selecting the target cell from the at least one second cell according to the historical load value of the at least one second cell comprises:

The terminal device selects a candidate cell from the at least two second cells, the RSRP value of the candidate cell is greater than the preset second RSRP threshold, and the historical load value of the candidate cell is less than the preset second A load threshold value, and the historical load value of the candidate cell is less than the load value of the first cell;

The terminal device selects a cell from the candidate cells according to a preset rule as the target cell.
The method according to claim 3, wherein the terminal device selecting a cell from the candidate cells as the target cell according to a preset rule comprises:

The terminal device selects the cell with the smallest load value among the candidate cells as the target cell; or,

The terminal device determines a random number according to a random number algorithm, and selects a cell from the candidate cells according to the random number as the target cell.
The method according to any one of claims 1-4, further comprising:

The terminal device determines the resource allocation ratio of the first cell based on the amount of uplink resources actually allocated for the terminal device and the amount of resources required by the terminal device, where the resource allocation ratio is the uplink of the first cell The resource allocation ratio of the direction; or,

The terminal device determines the resource allocation ratio of the first cell according to the amount of uplink resources actually allocated to the terminal device and the amount of resources required by the network device, and the resource allocation ratio is the downlink direction of the first cell. Resource allocation ratio.
The method according to any one of claims 1 to 5, wherein the resource allocation ratio of the first cell is determined according to the historical resource allocation ratio of the first cell; or,

The resource allocation ratio of the first cell is determined according to the historical resource allocation ratio of the first cell and the current resource allocation ratio.
The method according to claim 6, wherein the historical resource allocation ratio of the first cell is measured by the terminal device, or is obtained by the terminal device from a network device.
The method according to any one of claims 1-7, further comprising:

The terminal device periodically accesses the at least one second cell, and obtains the historical load value of the at least one second cell.
The method according to any one of claims 1-8, further comprising:

Determining the load value of the target cell by the terminal device;

The terminal device reports the load value of the target cell to the network device.
The method according to any one of claims 1-9, wherein before the terminal device is changed to the target cell, the method further comprises:

The terminal device is in an idle state, and the terminal device adjusts the RSRP values of the first cell and the target cell so that the reselection rule is satisfied; or,

The terminal device is in a connected state, and the terminal device adjusts the RSRP values of the first cell and the target cell so that the handover rule is satisfied.
The method according to any one of claims 1-9, wherein:

The terminal device is in an idle state, the first cell is the cell where the terminal device resides, and the cell is changed to a cell reselection; or,

The terminal device is in a connected state, the first cell is a serving cell of the terminal device, and the cell is changed to a cell handover.
A communication method, characterized in that it comprises:

The terminal device sends a request message to the cloud device, the request message includes identification information of at least two cells, the at least two cells include a first cell and at least one second cell, and the request message is used to request to obtain the at least Load levels of two cells, the first cell is the serving cell of the terminal device, and the second cell is different from the first cell;

Receiving, by the terminal device, the load levels of the at least two cells from the cloud device;

If the load level of the first cell is greater than the preset first load level threshold, the terminal device selects a target cell from the at least one second cell according to the load level of the at least one second cell ；

The terminal device switches to the target cell.
The method of claim 12, wherein the terminal device selecting a target cell from the at least one second cell according to the load level of the at least one second cell comprises:

The terminal device selects a candidate cell from the at least one second cell, the reference signal received power RSRP value of the candidate cell is greater than a preset first RSRP threshold, and the load level of the candidate cell is less than a preset A second load level threshold, and the load level of the candidate cell is less than the load level of the first cell;

The terminal device selects a cell from the candidate cells according to a preset rule as the target cell.
The method according to claim 13, wherein the terminal device selecting a cell from the candidate cells according to a preset rule as the target cell comprises:

The terminal device selects the cell with the smallest load value among the candidate cells as the target cell; or,

The terminal device determines a random number according to a random number algorithm, and selects a cell from the candidate cells according to the random number as the target cell.
The method according to any one of claims 12-14, wherein before the terminal device sends the request message to the cloud device, the method further comprises:

The terminal device determines that the period for sending the request message arrives; or,

The terminal device determines that the RSRP value of the first cell is greater than the preset second RSRP threshold. And the load value of the first cell is greater than the preset load threshold.
The method according to any one of claims 12-15, wherein before the terminal device sends the request message to the cloud device, the method further comprises:

The terminal device sends the information of the first cell to the cloud device, and the information of the first cell includes the identification information of the first cell, the link signal quality information of the first cell, and the first cell. The resource allocation ratio of a cell, and the information of the first cell is used by the cloud device to determine the load level of the first cell.
The method according to claim 16, wherein the resource allocation ratio of the first cell is determined according to the historical resource allocation ratio of the first cell; or,

The resource allocation ratio of the first cell is determined according to the historical resource allocation ratio of the first cell and the current resource allocation ratio.
The method according to claim 17, wherein the historical resource allocation ratio of the first cell is measured by the terminal device or obtained by the terminal device from a network device.
The method according to any one of claims 12-18, wherein before the terminal device switches to the target cell, the method further comprises:

The terminal device adjusts the RSRP values of the first cell and the target cell, so that the handover rule is satisfied.
A communication method, characterized in that it comprises:

The cloud device receives a request message from a first terminal device, the request message includes identification information of at least two cells, the at least two cells include a first cell of the first terminal device and at least one second cell, the The request message is used to request to obtain the load levels of the at least two cells, the first cell is the serving cell of the first terminal device, and the second cell is different from the first cell;

The cloud device sends the load levels of the at least two cells to the first terminal device, where the load levels of the at least two cells are used by the first terminal device to select a target cell for handover.
The method of claim 20, further comprising:

The cloud device receives first information of the first cell from the first terminal device, where the first information includes identification information of the first cell and first link signal quality information of the first cell And the first resource allocation ratio of the first cell;

The cloud device receives second information of the first cell from at least one second terminal device in the first cell, where the second information includes identification information of the first cell, Second link signal quality information and a second resource allocation ratio of the first cell, where the first cell is a serving cell of the second terminal device;

The cloud device determines the load level of the first cell according to the first information and the second information.
The method of claim 21, wherein the cloud device determining the load level of the first cell according to the first information and the second information comprises:

The cloud device determines at least one resource allocation ratio according to the first information and the second information, and link signal quality information corresponding to the at least one resource allocation ratio meets preset link signal quality requirements;

The cloud device determines the load level of the first cell according to the at least one resource allocation ratio.
The method according to claim 21 or 22, wherein the first resource allocation ratio of the first cell is determined according to the historical resource allocation ratio of the first cell; or,

The first resource allocation ratio of the first cell is determined according to the historical resource allocation ratio of the first cell and the current resource allocation ratio.
The method according to claim 23, wherein the historical resource allocation ratio of the first cell is measured by the terminal device or obtained by the terminal device from a network device.
A terminal device, characterized by comprising: a processor and a memory; the memory is used to store computer execution instructions, and when the terminal device is running, the processor executes the computer execution instructions stored in the memory, So that the terminal device executes the communication method according to any one of claims 1-19.
A cloud device, characterized by comprising: a processor and a memory; the memory is used to store computer execution instructions, and when the cloud device is running, the processor executes the computer execution instructions stored in the memory, So that the cloud device executes the communication method according to any one of claims 20-24.
A communication device, characterized by comprising a module for executing the communication method according to any one of claims 1-19.
A communication device, characterized by comprising a module for executing the communication method according to any one of claims 20-24.
A communication device, characterized by comprising a processor and an interface circuit, the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or transfer signals from the processor The signal of is sent to another communication device other than the communication device, and the processor is used to implement the communication method according to any one of claims 1-19 through a logic circuit or an execution code instruction.
A communication device, characterized by comprising a processor and an interface circuit, the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or transfer signals from the processor The signal is sent to another communication device other than the communication device, and the processor is used to implement the communication method according to any one of claims 20-24 through a logic circuit or an execution code instruction.
A chip system is characterized in that it includes:

Memory, used to store computer programs;

The processor is configured to call and run the computer program from the memory, so that the device installed with the chip system executes the communication method according to any one of claims 1-24.
A computer-readable storage medium, characterized by comprising a computer program, which when running on a computer, causes the computer to execute the communication method according to any one of claims 1-24.
A computer program product, characterized in that the computer program product comprises a computer program, when the computer program is run on a computer, the computer is caused to execute the communication method according to any one of claims 1-24.