CN113840339A

CN113840339A - Communication method, device and system

Info

Publication number: CN113840339A
Application number: CN202010588292.0A
Authority: CN
Inventors: 曾勇波; 郭涛; 刘领军; 秦城; 金辉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-12-24
Anticipated expiration: 2040-06-24
Also published as: CN113840339B; WO2021258767A1

Abstract

The embodiment of the application provides a communication method, a communication device and a communication system. The method comprises the following steps: the terminal equipment determines the load value of the first cell according to the resource allocation proportion of the first cell; the terminal equipment measures to obtain an RSRP value of a first cell; the terminal equipment judges whether the first cell meets the triggering condition of cell replacement or not according to the load value and the RSRP value of the first cell; and if so, selecting a target cell from the at least one second cell according to the historical load value of the at least one second cell, and then replacing the terminal equipment with the target cell. Based on the scheme, the terminal device in the idle state can predict the load of the resident cell, and reselect a target cell and reselect the target cell when the load value of the resident cell exceeds the load threshold value, so that when the terminal device enters the connection state, sufficient resources can be ensured to be used for data transmission of the terminal device, and the communication efficiency of the terminal device can be improved.

Description

Communication method, device and system

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a communication method, device and system.

Background

Generally, in a geographical location, there may be multiple cells with overlapping coverage. For the terminal device, there is a difference in link quality of different cells covering the terminal device, different cells are selected for access, and there is also a difference in service experience such as rate, delay, etc. According to the rules defined by the 3rd generation partnership project (3 GPP) standard, cell selection is based on Reference Signal Received Power (RSRP).

Disclosure of Invention

The embodiment of the application provides a communication method, a communication device and a communication system, so that the communication efficiency of terminal equipment is improved.

In a first aspect, an embodiment of the present application provides a communication method, including: the method comprises the steps that a terminal device determines a load value of a first cell according to a resource allocation proportion of the first cell, wherein the resource allocation proportion of the first cell is obtained according to an uplink resource amount actually allocated to the terminal device; the terminal equipment measures to obtain an RSRP value of the first cell; the terminal equipment judges whether the first cell meets a cell replacement triggering condition or not according to the load value of the first cell and the RSRP value of the first cell; if the triggering condition of cell replacement is met, the terminal equipment selects a target cell from at least one second cell according to the historical load value of the at least one second cell, wherein the second cell is different from the first cell; and the terminal equipment is changed to the target cell.

Based on the scheme, the terminal device in the idle state can predict the load of the resident cell, and reselect a target cell and reselect the target cell when the load value of the resident cell exceeds the load threshold value, so that sufficient resources can be ensured to be used for data transmission of the terminal device when the terminal device enters the connection state subsequently, and the communication efficiency of the terminal device can be improved.

In a possible implementation method, the determining, by the terminal device, whether the first cell meets a cell change triggering condition 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 a preset first RSRP threshold value, and the load value of the first cell is greater than a preset first load threshold value, the terminal device determines that the first cell meets a cell change triggering condition.

Based on the scheme, the triggering condition for triggering the cell replacement is given, the cell replacement is triggered when the cell load value and the RSRP value both meet the set condition, the cell replacement can be triggered at a proper time, and resource saving is facilitated.

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

Based on the scheme, when the target cell to be replaced is selected, the candidate cells are selected first, and then one target cell is selected from the candidate cells, so that the selection of a proper cell for replacement is facilitated.

In a possible implementation method, the selecting, by the terminal device, a cell from the candidate cells according to a preset rule as the target cell includes: the terminal equipment selects a cell with the minimum load value in 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 as the target cell according to the random number.

Based on the scheme, the selected target cell has smaller load, which is beneficial to ensuring that sufficient resources are used for data transmission of the terminal equipment, and further the communication efficiency of the terminal equipment can be improved.

In a possible implementation method, the terminal device determines a resource allocation proportion of the first cell according to an uplink resource amount actually allocated to the terminal device and a resource amount required by the terminal device, where the resource allocation proportion is a resource allocation proportion in an uplink direction of the first cell; or, the terminal device determines the resource allocation proportion of the first cell according to the uplink resource amount actually allocated to the terminal device and the resource amount required by the network device, where the resource allocation proportion is the resource allocation proportion in the downlink direction of the first cell.

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

Based on the scheme, the method and the device are beneficial to accurately determining the resource allocation proportion of the cell, and further can accurately determine the load value of the cell.

In a possible implementation method, the historical resource allocation proportion of the first cell is measured 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 a historical load value of the at least one second cell.

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

Based on the scheme, the network device can acquire 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 devices can request the network device for query, and the load value of the target cell can be quickly acquired.

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

Based on the scheme, the terminal device can firstly adjust the RSRP values of the first cell and the target cell so as to realize quick replacement to the target cell.

In a possible implementation method, the terminal device is in an idle state, the first cell is a cell where the terminal device resides, and the cell is replaced with 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 switched to a cell.

In a second aspect, an embodiment of the present application provides a communication method, including: the method comprises the steps that a terminal device sends a request message to a cloud device, wherein the request message comprises identification information of at least two cells, the at least two cells comprise a first cell and at least one second cell, the request message is used for requesting to acquire load levels of the at least two cells, the first cell is a service cell of the terminal device, and the second cell is different from the first cell; the terminal equipment receives the load levels of the at least two cells from the cloud equipment; if the load level of the first cell is greater than a preset first load level threshold value, the terminal equipment selects a target cell from the at least one second cell according to the load level of the at least one second cell; and the terminal equipment is switched to the target cell.

Based on the implementation scheme, the terminal device in the connected state can acquire the load levels of the serving cell and the at least one second cell from the cloud device, and reselects and switches to a target cell when the load level of the serving cell exceeds a preset load level threshold value, so that sufficient resources for data transmission of the terminal device can be ensured, and the communication efficiency of the terminal device can be improved.

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

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

Based on the scheme, the triggering condition for triggering the cell replacement is given, the cell replacement can be triggered at a proper time, and the resource saving is facilitated.

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

Based on the scheme, the cloud equipment can accurately determine the load level of the cell.

Based on the scheme, the method and the device are beneficial to accurately determining the resource allocation proportion of the cell, and further can accurately determine the load level of the cell.

In a possible implementation method, before the terminal device switches to the target cell, the terminal device adjusts RSRP values of the first cell and the target cell so as to satisfy a switching rule.

In a third aspect, an embodiment of the present application provides a communication method, including: the method comprises the steps that a cloud end device receives a request message from a first terminal device, wherein the request message comprises identification information of at least two cells, the at least two cells comprise a first cell and at least one second cell of the first terminal device, the request message is used for requesting to acquire load levels of the at least two cells, the first cell is a service cell of the first terminal device, and the second cell is different from the first cell; and the cloud terminal equipment sends the load grades of the at least two cells to the first terminal equipment, wherein the load grades of the at least two cells are used for selecting a target cell to be switched by the first terminal equipment.

In a possible implementation method, the cloud device receives, from the first terminal device, first information of the first cell, where the first information includes identification information of the first cell, first link signal quality information of the first cell, and a first resource allocation proportion 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, wherein the second information includes identification information of the first cell, second link signal quality information of the first cell and a second resource allocation proportion of the first cell, and the first cell is a serving cell of the second terminal device; and the cloud equipment determines the load level of the first cell according to the first information and the second information.

In a possible implementation method, the determining, by the cloud device, the load level of the first cell according to the first information and the second information includes: the cloud device determines at least one resource allocation proportion according to the first information and the second information, wherein link signal quality information corresponding to the at least one resource allocation proportion respectively meets a preset link signal quality requirement; and the cloud equipment determines the load level of the first cell according to the at least one resource allocation proportion.

In one possible implementation, the first resource allocation proportion of the first cell is determined according to a historical resource allocation proportion of the first cell; alternatively, the first resource allocation ratio of the first cell is determined according to a historical resource allocation ratio and a current resource allocation ratio of the first cell.

In a fourth aspect, an embodiment of the present application provides a communication method, including: the method comprises the steps that a terminal device sends a request message to a cloud device, wherein the request message comprises identification information of at least two cells and RSRP values respectively corresponding to the at least two cells, the at least two cells comprise a first cell and at least one second cell of the terminal device, the request message is used for requesting to acquire identification information of a target cell after switching, the first cell is a service cell of the terminal device, and the second cell is different from the first cell; the terminal equipment receives identification information of the target cell from the cloud equipment; and the terminal equipment is switched to the target cell.

Based on the above implementation scheme, the terminal device (e.g., CPE) in a connected state may obtain the load levels of the serving cell and the at least one second cell from the cloud device, and when the load level of the serving cell exceeds a preset load level threshold, the cloud device reselects a target cell for the terminal device, and then the terminal device switches to the target cell, thereby ensuring that sufficient resources are used for data transmission of the terminal device, and further improving the communication efficiency of the terminal device.

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

In a fifth aspect, an embodiment of the present application provides a communication method, including: the method comprises the steps that cloud end equipment receives a request message from first terminal equipment, wherein the request message comprises identification information of at least two cells and RSRP values respectively corresponding to the at least two cells, the at least two cells comprise a first cell and at least one second cell, the request message is used for requesting to obtain the identification information of a target cell switched by the terminal equipment, the first cell is a service cell of the first terminal equipment, and the second cell is different from the first cell; if the load level of the first cell is greater than a preset first load level threshold value, the cloud device selects the target cell from the at least one second cell according to the load level of the at least one second cell; and the cloud terminal equipment sends the identification information of the target cell to the first terminal equipment, wherein the identification information of the target cell is used for switching the first terminal equipment to the target cell.

In one possible implementation method, the selecting, by the cloud device, 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 a candidate cell from the at least one second cell, wherein the RSRP value of the candidate cell is greater than a preset RSRP threshold value, the load grade of the candidate cell is less than a preset second load grade threshold value, and the load grade of the candidate cell is less than the load grade of the first cell; and the cloud equipment selects a cell from the candidate cells according to a preset rule to serve as the target cell.

In a possible implementation method, the selecting, by the terminal device, a cell from the candidate cells according to a preset rule as the target cell includes: the cloud device selects a cell with the minimum load value in the candidate cells 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 as the target cell according to the random number.

In a sixth aspect, an embodiment of the present application provides a communication apparatus, which may be a terminal device, and may also be a chip for the terminal device. The apparatus has a function of implementing any of the implementation methods of the first aspect, the second aspect, or the fourth aspect described above. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a seventh aspect, an embodiment of the present application provides a communication apparatus, where the apparatus may be a cloud device, and may also be a chip for the cloud device. The apparatus has a function of implementing any implementation method of the third aspect or the fifth aspect. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In an eighth aspect, an embodiment of the present application provides a communication apparatus, including a processor and a memory; the memory is used for storing computer-executable instructions, and when the apparatus is operated, the processor executes the computer-executable instructions stored in the memory, so that the apparatus executes any of the implementation methods of the first aspect to the fifth aspect.

In a ninth aspect, the present application provides a communication device, which includes means or units (means) for performing the methods of the first aspect to the fifth aspect, and the steps of any method in each possible implementation method of the first aspect to the fifth aspect.

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 perform any implementation method of the first to fifth aspects. The processor includes one or more.

In an eleventh aspect, an embodiment of the present application provides a communication apparatus, including a processor, connected to a memory, and configured to call a program stored in the memory to perform any implementation method of the first aspect to the fifth aspect. The memory may be located within the device or external to the device. And the processor includes one or more.

In a twelfth aspect, embodiments of the present application further provide a computer-readable storage medium, where instructions are stored, and when the instructions are executed on a computer, the instructions cause a processor to execute any implementation method of the first aspect to the fifth aspect.

In a thirteenth aspect, the present application further provides a computer program product, where the computer program product includes a computer program, and when the computer program runs, the method in any implementation manner of the first aspect to the fifth aspect is executed.

In a fourteenth aspect, an embodiment of the present application further provides a chip system, including: a processor configured to perform any of the implementation methods of the first to fifth aspects.

Drawings

Fig. 1 is a schematic diagram of a network architecture to which the present invention is applied;

fig. 2 is a schematic flowchart of a communication method according to an embodiment of the present application;

fig. 3 is a schematic flowchart of another communication method provided in the embodiment of the present application;

fig. 4 is a schematic flowchart of another communication method provided in the embodiment of the present application;

fig. 5 is a schematic flowchart of another communication method provided in the embodiment of the present application;

fig. 6 is a diagram illustrating an example of setting a service type priority by a user according to an embodiment of the present application;

FIG. 7 is a diagram illustrating an example of a user configuring a network optimization service according to an embodiment of the present disclosure;

fig. 8 is a schematic diagram of a communication device according to an embodiment of the present application;

fig. 9 is a schematic diagram of another communication device provided in the embodiment of the present application;

fig. 10 is a schematic diagram of a cloud device according to an embodiment of the present application;

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

Detailed Description

Fig. 1 is a schematic diagram of a network architecture applicable to the embodiment of the present application, and includes a terminal device and a network device. The terminal device communicates with the network device via 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.

A terminal device (terminal device) is a device having a wireless transceiving function, and may be, for example, a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in remote medical treatment (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a User Equipment (UE), a Customer Premises Equipment (CPE), and the like.

The network device is a device for providing a wireless communication function for a terminal device, and the network device includes but is not limited to: next generation base stations (G nodeB, gbb), evolved node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), home base station (e.g., home evolved node B, or home node B), HNB (BBU), Transmission and Reception Point (TRP), Transmission Point (TP), mobile switching center, etc. in the fifth generation (5th generation, 5G).

In this embodiment of the application, when the terminal device is in an Idle (Idle) state, a cell accessed by the terminal device is referred to as a camped cell of the terminal device, for example, when the terminal device is in the Idle state, the camped cell may be selected according to an RSRP value. For example, the RSRP value of a certain cell satisfies the S criterion, the terminal device may select the cell to camp on, that is, the cell is used as the camping cell of the terminal device. When the terminal device is in a Connected (Connected) state, a cell accessed by the terminal device is called a serving cell.

The RSRP of the terminal's resident cell or serving cell can only reflect the received signal strength of the cell, but cannot reflect the performance of the cell. For example, it cannot be reflected whether the cell is congested (congestion generally indicates that the number of resources of the cell is not enough to meet the requirement of the terminal device that accesses), so the terminal device may select the cell based on RSRP and may encounter a situation that RSRP is good but cannot be used in the network. For example, for terminal devices with low mobility or in a stationary state, such as Customer Premises Equipment (CPE), smart devices in offices, etc., it is unlikely that a cell will be re-camped or handed over to another cell once cell selection is completed according to RSRP, since the signal strength of the received RSRP is relatively stable.

However, RSRP may only reflect the downlink signal strength and may not reflect the quality of the cellular network. For example, when a certain cell is congested in uplink or downlink, RSRP is good, but due to insufficient resource allocation, the data transmission rate on the cellular link is low, which results in poor experience of the terminal device accessing the cell.

Aiming at the defects of cell selection based on RSRP, the embodiment of the application provides a method for measuring network load and a method for selecting a cell based on the network load. In order to measure the network load condition of a cell, the embodiment of the application provides a method for collecting relevant historical information of cell performance by using terminal equipment and/or cloud equipment, measuring the network load of the cell by combining real-time measured data, evaluating the cell load based on a terminal side or evaluating the cell network load based on interaction of the terminal equipment and the cloud equipment, and triggering cell reselection or switching based on the cell network load.

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

The CPE is a mobile signal access device that receives a mobile signal and forwards the mobile signal with a Wireless Fidelity (WiFi) signal, and is also a device that converts a high-speed 4G or 5G signal into a WiFi signal, and the number of mobile terminals capable of accessing the internet at the same time is also large. The CPE can be widely applied to wireless network access in rural areas, towns, hospitals, units, factories, cells and the like, and the cost for laying a wire network can be saved. Depending on the installation location, the CPEs can be classified into outdoor CPEs and indoor CPEs. The CPE, once installed in place, is essentially not subject to random movement and therefore the received signal strength is relatively stable.

After the CPE is installed in place, the CPE may be started by a user, and after the CPE is started, the cell search is started, and a cell with the best RSRP is selected for access, where the CPE is in a connected state, and may be configured to receive a downlink wireless signal from a network device and convert the downlink signal into a WiFi signal to transmit, or may receive a WiFi signal of a user device (e.g., a mobile phone, a computer, etc.) accessed to the CPE and convert the WiFi signal into an uplink wireless signal to transmit to the accessed network device. For example, referring to fig. 1, taking the terminal device in fig. 1 as an example of a CPE, after the CPE is started, the CPE may search for broadcast signals sent by a plurality of network devices deployed around, perform RSRP measurement based on the received broadcast signals of different network devices, and finally select a cell of a certain network device for access, where RSRP of the accessed cell is the best.

Since the current CPE is installed at a fixed position and peripheral cell signals are stable, once a certain cell is accessed, the possibility of subsequent cell replacement is low. In the embodiment of the present application, in order to enable the CPE to change to another cell with a relatively light load when the load of the currently accessed or camped cell is heavy, a corresponding function may be configured for the CPE, so that the CPE has the capability of selecting a cell by referring to the cell load and the RSRP at the same time. Certainly, in order to avoid the situation that the CPE frequently changes the cell within a short time and causes severe power consumption, a corresponding function may be configured in advance in the CPE. For example, when the CPE is in a set time period and the number of times of cell replacement exceeds a preset replacement number threshold, the CPE determines that the handover is too frequent, so that the cell replacement function may be suspended or turned off. In this case, the CPE may select a cell to camp on (or access) for the last time, or select a cell to camp on (or access) for the initial time.

In some embodiments provided in the present application, whether the CPE needs to start the cell replacement function provided in the embodiments of the present application may be determined based on an ongoing service type. The service type here refers to a service on a terminal accessed to a 5G or 4G network through a CPE, such as a WeChat service, an Aichi art video service, and the like. By way of example, the service types may be classified into low-latency services (such as game-type services), mass data services (such as users watching network videos, and the like). The low-delay service has the characteristics of higher delay requirement on data transmission and small communication service data volume. The mass data service is characterized in that the communication service data volume is large. For low-delay service, the cell requiring access can provide stable connection, and the requirement for the requested resource amount is not high, so that when the CPE determines that the service type is low-delay service, the CPE can determine not to start a cell change function, and thus the CPE can keep accessing to the cell with the best initially accessed RSRP. The CPE may stay in the cell even though the cell may be heavily loaded for some period of time. For massive data services, the requirement for the amount of resources that a cell can provide is high, and therefore, a cell replacement function generally needs to be started.

In some embodiments provided by the present application, a service type priority may also be configured for the CPE by the user, so that the CPE may determine whether to start a cell change function based on the configured service type priority. For example, referring to fig. 6, an exemplary diagram for setting a service type priority for a user. The user may wirelessly connect the handset to the CPE and then configure the traffic type priority of the CPE by operating on the handset. The user clicks an application program 'CPE' on the mobile phone, enters a configuration interface of the CPE, selects a 'service type priority' option in the configuration interface, and then can select a 'data priority mode' or a 'time delay priority mode', thereby completing the configuration of the service type priority. In the data priority mode, the CPE preferentially processes a service with a large service data volume, and in the delay priority mode, the CPE preferentially processes a low-delay service, that is, preferentially processes a service with a high delay requirement. In the data priority mode, the CPE starts a cell replacement function, and in the time delay priority mode, the CPE closes the cell replacement function.

In some embodiments provided by the present application, the user may also configure the CPE device whether to start the network optimization service. When the user configuration starts the network optimization service, the CPE starts the cell replacement function, and when the user configuration stops the network optimization service, the CPE stops the cell replacement function. For example, referring to FIG. 7, an exemplary diagram of a network optimization service is configured for a user. The user may wirelessly connect the handset to the CPE and then configure the network optimization service of the CPE by operating on the handset. The user clicks an application program 'CPE' on the mobile phone, enters a configuration interface of the CPE, selects a 'network optimization service' option in the configuration interface, pops up 'whether to start the network optimization service', and can select 'yes' to start the network optimization service or select 'no' to stop the network optimization service.

Further, when the CPE has multiple cell changing methods (for example, the CPE has multiple cell changing methods in the following first to fourth embodiments), the CPE may select a method pre-configured by the user to perform cell changing, or the CPE selects one of the multiple methods to perform cell changing according to the current actual situation.

The condition for triggering the CPE to perform the cell selection method may be to perform the cell selection method periodically, or may be to perform the cell selection method before a preset time arrives, for example, the CPE finds that the cell load is heavy in a certain fixed time period (for example, 9 am to 10 am of each day) of each day according to a historical load condition, so the CPE may start to perform the cell selection method provided in the embodiment of the present application before 9 am of each day arrives to determine whether cell reselection or cell handover needs to be performed.

The following describes four different cell selection methods provided in the embodiments of the present application.

Example one

As shown in fig. 2, a communication method for an embodiment of the present application is provided, in which a CPE in an idle state evaluates a cell network load and performs cell reselection based on the cell network load. Where whether the CPE starts cell reselection based on load may be combined with the above embodiments. For example, when the CPE determines from the history data that the load of the camping cell is large at the current time, cell reselection based on the load may be started. As another example, when a configured trigger time for the CPE arrives (e.g., 9 am every day), cell reselection based on load may begin.

The method comprises the following steps:

in step 201, the CPE in an idle state determines a predicted load value of the camping cell according to a resource allocation ratio of the first cell (in this embodiment, the first cell refers to the camping cell of the CPE).

The resource allocation ratio of the resident cell may be calculated as follows:

1) and in the uplink direction, the resource allocation proportion of the resident cell is the uplink resource amount actually allocated to the CPE/the resource amount required by the CPE.

2) In the downlink direction, the resource allocation proportion of the resident cell is the downlink resource amount actually allocated to the CPE/the resource amount required by the network device.

Where "/" indicates a dividing meaning. In practical applications, the amount of resources required by the CPE may be represented by an amount of resources requested in a Buffer Size Report (BSR), the amount of resources required by the network device may be obtained by the CPE from the network device, and the amount of resources actually allocated to the CPE may be represented by an amount of resources allocated by an uplink grant (UL grant) received by the CPE. It should be noted that, when counting the resource amount requested in the BSR, the resource amount requested by the BSR that has not received the UL grant after timeout needs to be removed, that is, when the CPE sends a BSR for requesting the resource amount, if the resource amount allocated by the UL grant corresponding to the BSR is not received, the resource amount requested by the BSR does not account for the resource amount required by the CPE.

As an implementation method, the resource allocation proportion may be obtained by the terminal device itself. For example, after the CPE starts and accesses to the first cell, the first cell is a serving cell of the CPE, and the CPE is in a connected state. When the CPE is in a connected state, the CPE may periodically determine a 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 resource allocation ratios of the history are stored in the CPE. For example, referring to fig. 1, if the CPE currently accesses a certain cell under the network device 1, the CPE may periodically determine and store the resource allocation ratio of the cell, so that one or more resource allocation ratios with respect to the history of the cell may be obtained. When the CPE enters the idle state from the connection state due to a network failure, an operation in response to a user, or an active disconnection with the network, the CPE does not calculate the resource allocation ratio any more, and the serving cell also becomes a residential cell of the CPE. When the CPE is in an idle state and resides in the resident cell, the historical resource allocation proportion of the resident cell is stored in the CPE. For example, the resource allocation ratios of the camped cell may be obtained by averaging the resource allocation ratios of a plurality of histories of the camped cell, or by performing weighted averaging. For another example, a trend function may be determined according to a plurality of historical resource allocation proportions of the resident cells, and the resource allocation proportion of the resident cell at the current time may be predicted according to the trend function.

As another implementation method, the resource allocation ratio may also be obtained by the terminal device from a network device (e.g., a base station, or a server). For example, the network device may collect resource allocation proportions reported by different terminal devices in the same cell, and average or weighted average the collected resource allocation proportions of the cell to obtain the resource allocation proportion of the cell. Then, the network device sends the resource allocation proportion 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 obtained resource allocation proportion to the terminal device in the cell.

After the terminal device obtains the resource allocation proportion of the residential cell, the predicted load value of the residential cell may be determined according to the resource allocation proportion of the residential cell. The resource allocation proportion of the camping cell is in inverse proportion to the predicted load value, that is, the smaller the resource allocation proportion is (or the lower the resource allocation proportion is), the larger the predicted load value is. And in the uplink direction, the determined predicted load value of the resident cell is the uplink predicted load value of the resident cell. And in the downlink direction, the determined predicted load value of the resident cell is the downlink predicted load value of the resident cell.

Step 202, the CPE measures the RSRP value of the camped cell.

Here, the RSRP value is a current RSRP value of the camping cell measured by the CPE.

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

In step 203, the CPE determines whether a cell reselection triggering condition is satisfied.

When the following conditions I and II are simultaneously met, determining that the triggering condition of cell reselection is met:

the first condition is as follows: and the RSRP value of the resident cell is greater than the preset RSRP threshold value.

And a second condition: the predicted load value of the resident cell is larger than a preset load threshold value.

The RSRP value in the first condition is determined in the step 202, and the predicted load value in the second condition is determined in the step 201.

The meaning that the above condition one and condition two are simultaneously satisfied is: the received signal quality of the current resident cell is better, but the load of the resident cell is larger, so that the load of the current resident cell is too large, and a cell with smaller load needs to be selected for the CPE to reside, so that when the CPE enters a connected state in the future, sufficient resources can be provided for data transmission.

It should be noted that, it is necessary to satisfy both the above condition one and condition two to trigger cell reselection, rather than triggering cell reselection only when the condition two is satisfied, because: when the RSRP value of the residential cell is less than or equal to the preset RSRP threshold value, even if the load of the residential cell is low, the network device may allocate less resources to the CPE, which results in a low resource allocation ratio of the residential cell calculated by the CPE, and thus a large predicted load value of the residential cell calculated by the CPE. That is to say, when the RSRP value of the camped cell is less than or equal to the preset RSRP threshold, the calculated predicted load value of the camped cell may not be accurate enough, in other words, when the RSRP value of the camped cell is greater than the preset RSRP threshold, the calculated predicted load value of the camped cell is accurate.

It should be noted that, the CPE may periodically determine whether the triggering condition for cell reselection is satisfied, and the period may be the same as or different from the period for the CPE to calculate the resource allocation ratio of the camping cell.

And step 204, if the triggering condition of cell reselection is met, the CPE selects a target cell from at least one second cell.

For example, if the triggering condition for cell reselection is satisfied, the CPE selects a target cell from at least one second cell according to a 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 is camped on after reselection.

The method for determining the target cell by the CPE may, for example, include the following steps:

step A, the CPE determines the cells which simultaneously meet the following three conditions in at least one second cell.

The first condition is as follows: and the RSRP value of the second cell is greater than a preset RSRP threshold value.

And a second condition: and the historical load value of the second cell is smaller than a preset load threshold value.

And (3) carrying out a third condition: the historical load value of the second cell is less than the predicted load value of the camped cell.

The preset RSRP threshold in the first condition may be the same as or different from the preset RSRP threshold described in step 202.

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

It should be noted that, if the preset load threshold in the second condition is the same as the preset load threshold described in the step 202, the third condition is necessarily satisfied when the second condition is satisfied, and therefore, in this case, the third condition may not be needed.

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 at least one second cell and determines the historical load value of the at least one second cell by using a method similar to the method for determining the predicted load value of the first cell in step 201. Alternatively, the CPE may obtain the predicted load value of the at least one second cell from the network device. For example, the network device to which the second cell belongs may collect resource allocation proportions reported by different terminal devices in the same second cell, obtain an average value or a weighted average value of the collected resource allocation proportions of the second cell, further determine a historical load value of the second cell according to the resource allocation proportions of the second cell, and then send the historical load value of the second cell to the terminal device according to a request of the terminal device, or the network device may also periodically send the latest obtained historical load value of the second cell to the terminal device in the second cell.

The second cell satisfying the above three conditions at the same time may be referred to as a candidate cell. There may be one or more candidate cells.

And step B, if one cell simultaneously meeting the three conditions exists, determining that the cell is the target cell, and if a plurality of cells simultaneously meeting the three conditions exist, selecting one cell as the target cell.

The method for selecting a cell from a plurality of cells satisfying the above three conditions at the same time may be, for example: selecting a cell with the minimum predicted load value, or determining a random number according to a random algorithm, and then selecting a cell from the plurality of cells according to the random number.

In step 205, the CPE adjusts the RSRP values of the target cell and the camped cell so that the reselection criteria are met.

According to the current cell reselection mechanism, the camped cell of the CPE and the reselected cell need to satisfy a reselection criterion (such as an R criterion), so that in order to enable the CPE to reselect the selected target cell, the CPE can adjust RSRP values of the target cell and the camped cell according to the requirement of the reselection criterion, so that the adjusted RSRP values of the target cell and the camped cell satisfy the reselection criterion, and thus the CPE can smoothly reselect the target cell to camp.

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 camped cell, so that the target cell and the camped cell satisfy the R criterion, thereby satisfying the cell reselection condition.

Step 206, the CPE completes cell reselection and reselects to the target cell for camping.

After the above step 205 is completed, the cell reselection condition is satisfied, so the CPE can reselect to the target cell for camping.

Optionally, after the CPE reselects to the target cell for residence, the load value of the target cell may also be determined, and then the load value of the target cell is reported to the network device. The load value here may be a historical load value or a current load value.

Based on the implementation scheme, the terminal device (such as CPE) in the idle state may predict the load of the residential cell, and reselect a target cell to the target cell when the load value of the residential cell exceeds the load threshold value, so that sufficient resources for data transmission of the terminal device may be ensured when the subsequent terminal device enters the connected state, and the communication efficiency of the terminal device may be improved.

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

as a first alternative implementation, the condition of step 203 may be replaced by: the downlink RSRP value of the camping cell is greater than the preset RSRP threshold, and the condition one in step 204 is replaced with: and the downlink RSRP value of the second cell is greater than a preset RSRP threshold value. Based on the first alternative, if the downlink RSRP is poor, the uplink RSRP is also poor, so that the uplink signal quality can be determined according to the downlink RSRP.

As a second alternative implementation, the condition of step 203 may be replaced by: the transmitting power of the terminal equipment in the uplink channel of the resident cell is larger than a preset transmitting power threshold value. Based on the second alternative, if the uplink channel transmission power of the terminal device in the camping cell is larger, it indicates that the uplink quality is poor, so the uplink signal quality can be judged according to the transmission power of the terminal device.

As a third alternative implementation, the condition of step 203 above may be replaced by: the retransmission times of the terminal equipment sending random access transmission (Preamble transmission) in the resident cell is larger than a preset retransmission times threshold value. Based on the third alternative, if the number of retransmissions for the terminal device to send the Preamble transmission in the camped cell is large, it indicates that the uplink quality is poor, so the uplink signal quality can be determined according to the number of retransmissions for the terminal device to send the Preamble transmission in the camped cell.

Example two

As shown in fig. 3, a communication method provided for the embodiment of the present application is to evaluate the cell network load by a terminal device in a connected state, and perform cell handover based on the cell network load. Where whether the CPE starts cell reselection based on load may be combined with the above embodiments. For example, when the CPE determines from the historical data and/or the current data that the load of the serving cell is greater at the current time, cell switching based on the load may be initiated. As another example, when a CPE configured trigger time arrives (e.g., 9 am every day), a load-based cell switch may be initiated.

The method comprises the following steps:

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

The resource allocation ratio of the serving cell may be calculated as follows:

1) and in the uplink direction, the resource allocation proportion of the serving cell is the uplink resource amount actually allocated to the CPE/the resource amount required by the CPE.

2) In the downlink direction, the resource allocation proportion of the serving cell is the downlink resource amount actually allocated to the CPE/the resource amount required by the network device.

As an implementation method, the resource allocation proportion may be obtained by the terminal device itself. For example, after the CPE starts and accesses to the first cell, the first cell is a serving cell of the CPE, and the CPE is in a connected state. When the CPE is in a connected state, the CPE may periodically determine a 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 resource allocation ratios of the history are stored in the CPE. For example, referring to fig. 1, if the CPE currently accesses a certain cell under the network device 1, the CPE may periodically determine and store the resource allocation ratio of the cell, so that one or more resource allocation ratios with respect to the history of the cell may be obtained. For example, the resource allocation ratios of the serving cell may be obtained by averaging the resource allocation ratios of a plurality of histories of the serving cell, or by performing weighted averaging. Or, averaging a plurality of historical resource allocation proportions of the serving cell and the current resource allocation proportion, or performing weighted average to obtain the resource allocation proportion of the serving cell. Or, a trend function is determined according to a plurality of historical resource allocation proportions of the serving cells, 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 future moment is determined according to the trend function.

After obtaining the resource allocation proportion of the terminal device, the CPE may determine the current load value or the predicted load value according to the resource allocation proportion. Wherein the resource allocation ratio of the serving cell is in inverse proportion to the current load value (or the 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.

Here, the RSRP value is a current RSRP value of the serving cell measured by the CPE.

Step 303, the CPE determines whether the triggering condition for cell switching is satisfied.

When the following conditions I and II are simultaneously met, determining that the triggering conditions of cell switching are met:

the first condition is as follows: the RSRP value of the serving cell is larger than a preset RSRP threshold value.

And a second condition: the load value of the service cell is larger than a preset load threshold value.

The RSRP value in the first condition is determined in the step 302, and the load value in the second condition is determined in the step 301. Here, the load value of the serving cell may be a current time load value or a predicted load value of the serving cell.

It should be noted that, if the RSRP value of the serving cell in the first condition is the uplink RSRP value, the load value of the serving cell in the second condition is the load value of the serving cell in the uplink direction, such as the current time load value and/or the predicted load value of the serving cell in the uplink direction. If the RSRP value of the serving cell in the first condition is the downlink RSRP value, the load value of the serving cell in the second condition is the load value of the serving cell in the downlink direction, such as the current time load value and/or the predicted load value of the serving cell in the downlink direction.

The meaning that the above condition one and condition two are simultaneously satisfied is: the received signal quality of the current serving cell is better, but the load of the serving cell is larger, so a cell with smaller load needs to be selected for the CPE to perform handover, so that the CPE can have sufficient resources to perform data transmission.

It should be noted that, it is necessary to satisfy the above condition one and condition two simultaneously to trigger the cell handover, rather than triggering the cell handover only when the condition two is satisfied, because: when the RSRP value of the serving cell is less than or equal to the preset RSRP threshold value, even if the load of the serving cell is low, the network device may allocate less resources to the CPE, which may result in a low resource allocation ratio of the serving cell calculated by the CPE, and thus a large predicted load value of the serving cell calculated by the CPE. That is, 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, when the RSRP value of the serving cell is greater than the preset RSRP threshold, the calculated predicted load value of the serving cell is accurate.

It should be noted that, the CPE may periodically determine whether the triggering condition for cell handover is satisfied, and the period may be the same as or different from the period for the CPE to calculate the resource allocation ratio of the serving cell.

Step 304, if the triggering condition of cell switching is satisfied, the CPE selects a target cell from at least one second cell of the serving cell.

For example, if the triggering condition for cell handover is met, the CPE selects a target cell from at least one second cell according to a 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 may be the serving cell after CPE handover.

And (3) carrying out a third condition: the historical load value of the second cell is less than the load value of the serving cell.

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

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

It should be noted that, if the preset load threshold in the second condition is less than or equal to the preset load threshold described in the step 302, the third condition is necessarily satisfied when the second condition is satisfied, and therefore, in this case, the third condition may not be needed.

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 at least one second cell and determines the historical load value of the at least one second cell by using a method similar to the method for determining the current load value (or the predicted load value) of the first cell in step 301. Alternatively, the CPE may obtain the load value of the at least one second cell from other CPEs or network devices. For example, the network device to which the second cell belongs may collect resource allocation proportions reported by different terminal devices in the same second cell, obtain an average value or a weighted average value of the collected resource allocation proportions of the second cell, further determine a historical load value of the second cell according to the resource allocation proportions of the second cell, and then send the historical load value of the second cell to the terminal device according to a request of the terminal device, or the network device may also periodically send the latest obtained historical load value of the second cell to the terminal device in the second cell.

Step 305, the CPE adjusts the RSRP value of the target cell and the RSRP value of the serving cell such that the handover criterion is met.

According to the current cell switching mechanism, the service cell of the CPE and the cell to be switched need to satisfy a switching criterion (such as an S criterion), so that in order to enable the CPE to be switched to the selected target cell, the CPE can adjust RSRP values of the target cell and the service cell according to the requirement of the switching criterion, so that the adjusted RSRP values of the target cell and the service cell satisfy the switching criterion, and thus the CPE can be smoothly switched to the target cell.

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 satisfy the S-criteria, thereby satisfying the condition for cell handover.

Step 306, the CPE completes cell switching and switches to the target cell.

After the above step 305 is completed, the cell handover condition is satisfied, and the CPE can handover to the target cell.

The method for switching the CPE to the target cell includes, but is not limited to:

in the first method, the CPE enters an idle state to perform cell reselection, a target cell is reselected, and then the CPE is converted into a connected state from the idle state.

And in the second method, the CPE switches the cell to the target cell according to the indication of the network equipment in the connected state.

Optionally, after the CPE is switched to the target cell, the load value of the target cell may also be determined, and then the load value of the target cell is reported to the network device. The load value here may be a historical load value or a current load value.

Based on the implementation scheme, the terminal device in the connected state can determine the load of the serving cell, and reselect and switch to the target cell when the load value of the serving cell exceeds the load threshold value, 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.

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

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

as a first alternative implementation, the condition one of the above step 303 may be replaced by: the downlink RSRP value of the serving cell is greater than the preset RSRP threshold, and the condition of step 304 is replaced with: and the downlink RSRP value of the second cell is greater than a preset RSRP threshold value. Based on the first alternative, if the downlink RSRP is poor, the uplink RSRP is also poor, so that the uplink signal quality can be determined according to the downlink RSRP.

As a second alternative implementation, the condition one of the above step 303 may be replaced by: the transmitting power of the terminal equipment in the uplink channel of the service cell is larger than a preset transmitting power threshold value. Based on the second alternative, if the uplink channel transmission power of the terminal device in the serving cell is larger, it indicates that the uplink quality is poor, so the uplink signal quality can be judged according to the transmission power of the terminal device.

In the first embodiment and the second embodiment, the terminal device determines whether cell reselection or cell handover needs to be performed. In other embodiments, the terminal device may be combined with a cloud device (e.g., a network device (e.g., a base station), a network management device, a cloud server, or a third-party device), to determine whether cell handover needs to be performed.

For example, in an embodiment, the cloud device may draw a network load change trend graph of each cell or calculate a network load change trend function according to load levels of service cells of the CPE reported by the CPEs, and then the cloud device may send the network load change trend graph or the network load change trend function of the cell to each CPE, so that the CPE may predict a load change condition of the service cell or an adjacent cell of the CPE according to the network load change trend graph or the network load change trend function of the cell, and further determine whether the cell needs to be switched based on the load change condition of the service cell or the adjacent cell. If the cell needs to be switched, the corresponding target cell can be selected for switching according to the load change condition of the serving cell or the adjacent cell. For example, the serving cell of CPE1, CPE2, and CPE3 is cell 1, the serving cell of CPE4, CPE5, and CPE6 is cell 2, and the serving cell of CPE7, CPE8, and CPE9 is cell 3. CPE1, CPE2, and CPE3 may periodically report the load level of cell 1 to the cloud end device (regarding the meaning of the load level, refer to the description in the following third embodiment), CPE4, CPE5, and CPE6 may periodically report the load level of cell 2 to the cloud end device, and CPE7, CPE8, and CPE9 may periodically report the load level of cell 3 to the cloud end device, where cell 1, cell 2, and cell 3 are physically adjacent cells. The cloud device may calculate a network load change trend graph of the cell 1 or a network load change trend function of the cell 1 based on load levels of the cell 1 periodically reported by the CPE1, the CPE2, and the CPE3, calculate a network load change trend graph of the cell 2 or a network load change trend function of the cell 2 based on load levels of the cell 2 periodically reported by the CPE4, the CPE5, and the CPE6, calculate a network load change trend graph of the cell 3 based on load levels of the cell 3 periodically reported by the CPE7, the CPE8, and the CPE9, or calculate a network load change trend function of the cell 3. Then, the cloud device may send a network load change trend graph or a network load change trend function of the cell 1 to the CPE1, the CPE2, and the CPE3, and optionally send a network load change trend graph or a network load change trend function of the cell 2 and the cell 3 to the CPE1, the CPE2, and the CPE 3. The cloud device may send a network load change trend graph or a network load change trend function of the cell 2 to the CPE4, the CPE5, and the CPE6, and optionally also send a network load change trend graph or a network load change trend function of the cell 1 and the cell 3 to the CPE4, the CPE5, and the CPE 6. The cloud device may send a network load change trend graph or a network load change trend function of the cell 3 to the CPE7, the CPE8, and the CPE9, and optionally also send a network load change trend graph or a network load change trend function of the cell 1 and the cell 2 to the CPE7, the CPE8, and the CPE 9. Thus, the CPEs 1-9 may determine whether a 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 switched, a corresponding target cell can be selected for switching according to a network load change trend graph or a network load change trend function of the serving cell or the neighboring cell. For example, taking CPE1 as an example, CPE1 determines that the load of cell 1 is heavy at the present time or at a future time according to the received network load variation trend graph or network load variation trend function of cell 1, and exceeds a preset threshold, and CPE1 may select a light-load cell from cell 2 and cell 3 to perform handover based on the network load variation trend graph or network load variation trend function of cell 2 and cell 3.

For another example, in another embodiment, when the cloud device is a base station and the CPE are the same vendor, the base station may directly notify the CPE to perform cell switching when determining that an uplink grant (UL grant) resource is insufficient, without determining whether to perform cell switching by the CPE. That is, the base station may determine that the cell switching is performed when a certain condition is satisfied, and actively notify the CPE to perform the cell switching, which is beneficial to improving the user experience of the CPE.

For another example, in another embodiment, when the cloud device is a base station, the CPE may send, to the base station, indication information through one or more reserved fields in an air interface signaling of the CPE, where the indication information is used to indicate that cell handover is not to be performed, and then a 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 CPE is configured by a user not to perform network optimization, the CPE may send the indication information to the base station in one or more reserved fields of air interface signaling.

Of course, the embodiment of the present application further provides another embodiment (e.g., the following third embodiment and fourth embodiment), and the CPE is combined with the cloud device to determine whether cell handover needs to be performed.

EXAMPLE III

As shown in fig. 4, in the communication method provided in the embodiment of the present application, a cloud device evaluates a network load of a cell, a terminal device determines whether to perform cell handover according to a query result obtained from the cloud device, and when a cell handover condition is satisfied, the terminal device selects a cell from at least one second cell as a cell after handover.

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

The method comprises the following steps:

in step 401, the CPE sends information of a first cell (in this embodiment, the first cell refers to a serving cell of the CPE) to the cloud end device, where the information of the serving cell includes an identifier of the serving cell, link signal quality information of the serving cell, and a resource allocation ratio of the serving cell.

The link signal quality information of the serving cell includes an uplink RSRP value and/or a downlink RSRP value of the serving cell.

Alternatively, the link signal quality information of the serving cell includes a link signal quality level of the serving cell. For example, the link signal quality level may be determined according to an uplink RSRP value and/or a downlink RSRP value of the serving cell. As an example, the link signal quality levels are divided into 5 levels in advance, in the case of an uplink RSRP value, each level corresponds to one uplink RSRP value interval, different uplink RSRP value intervals have no intersection, and the aggregate of all uplink RSRP value intervals covers all uplink RSRP values. As another example, the link signal quality level may also be determined based on the CPE's uplink transmit power. As an example, the link signal quality classes are divided into 5 classes in advance, each class corresponds to one uplink transmit power interval, different transmit power intervals have no intersection, and the aggregate of all the transmit power intervals covers all possible uplink transmit powers.

The method for determining the resource allocation ratio may refer to the description related to step 301 in the embodiment corresponding to fig. 3, and is not described again.

It should be noted that, after the CPE is started and accesses the first cell, the first cell is a serving cell of the CPE, and the CPE may periodically send link signal quality information of the serving cell to the cloud device, or send the link signal quality information of the serving cell to the cloud device after determining that the measured RSRP value of the serving cell is greater than the preset RSRP threshold value. Taking a cloud device as an example of a network device, referring to fig. 1, if a CPE currently accesses a certain cell under the network device 1, the CPE may periodically send link signal quality information of the cell 1 to the network device 1, for example, the link signal quality information includes an uplink RSRP value and/or a downlink RSRP value, or includes a link signal quality level of the cell 1.

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

As one implementation method, the load level of the serving cell may be divided into N levels in advance, where N is greater than or equal to 2. Specifically, the user configuration may be performed, or the cloud device may be graded according to a preset policy. As an example, the load level of the serving cell is divided into 5 levels in advance, each level corresponds to one resource allocation proportion interval, different resource allocation proportion intervals have no intersection, and the aggregate of all resource allocation proportion intervals covers all resource allocation proportions. Wherein, the larger the load grade is, the heavier the cell load is, and correspondingly, the smaller the value of the resource allocation proportional interval is.

Because the same cell can be configured as the serving cells of the plurality of CPEs, the cloud device can receive the link signal quality information and the resource allocation proportion reported by the plurality of CPEs in the same serving cell within a set time length. And the cloud equipment screens a part of resource allocation proportions from the reported resource allocation proportions according to the link signal quality information and averages the resource allocation proportions, and then the cloud equipment determines the load grade of the serving cell according to the resource allocation proportion interval to which the average value belongs.

For example, within the set time length, CPE1 in cell 1 reports (RSRP1, resource allocation ratio 1), CPE2 in cell 1 reports (RSRP2, resource allocation ratio 2), CPE3 in cell 1 reports (RSRP3, resource allocation ratio 3), and CPE4 in cell 1 reports (RSRP4, ratio 4), where the cell 1 is a serving cell of CPE1, CPE2, CPE3, and CPE 4. The RSRP2, the RSRP3, and the RSRP4 are greater than a preset RSRP threshold value, and the RSRP1 is smaller than the preset RSRP threshold value, the cloud device calculates an average value of the resource allocation proportion 2, the resource allocation proportion 3, and the resource allocation proportion 4, determines a resource allocation proportion interval to which the average value belongs, and further determines the load level of the serving cell.

For another example, within the set time duration, CPE1 in cell 1 reports (link signal quality level 1, resource allocation ratio 1), CPE2 in cell 1 reports (link signal quality level 2, resource allocation ratio 2), CPE3 in cell 1 reports (link signal quality level 3, resource allocation ratio 3), and CPE4 in cell 1 reports (link signal quality level 2, ratio 4), where cell 1 is a serving cell of CPE1, CPE2, CPE3, and CPE 4. If the link signal quality grades reported by the CPE2, the CPE3 and the CPE4 are greater than the preset link signal quality grade 1, the cloud device calculates an average value of the resource allocation proportion 2, the resource allocation proportion 3 and the resource allocation proportion 4, determines a resource allocation proportion interval to which the average value belongs, and further determines the load grade of the serving cell.

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

In step 403, the CPE sends a request message to the cloud device for requesting to query the load levels of the serving cell and the at least one second cell.

The request message of step 403 contains a cell identity list, wherein the cell identity list comprises an identity of the serving cell and an identity of the 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 value.

Optionally, if the cloud device records a load level in an uplink direction and a load level in a downlink direction at the same time for a cell, the request message in step 403 may also carry an inquiry type, where the inquiry type may be downlink only (DL only), uplink only (UL only), or uplink and downlink (Both DL and UL). Wherein, only downlink refers to inquiring the load grade in the downlink direction only, only uplink refers to inquiring the load grade in the uplink direction only, and uplink refers to inquiring the load grade in the uplink direction and the downlink direction simultaneously.

The method for triggering the CPE to send the request message to the cloud device includes, but is not limited to:

method one, periodic triggering

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

Method two, event triggering

For example, if the measured RSRP value of the serving cell is greater than the preset RSRP threshold value and the resource allocation ratio of the serving cell is smaller than the preset ratio threshold value, the CPE sends a request message for requesting to query the load levels of the serving cell and the at least one second cell to the cloud device.

By the above method one or method two, the CPE may be triggered to request the cloud device to acquire the load levels of the serving cell and the at least one second cell.

In step 404, the CPE receives load levels of the serving cell and the at least one second cell from the cloud device.

Step 405, the CPE determines whether the triggering condition for cell switching is satisfied according to the load level of the serving cell.

For example, when the load level of the serving cell is greater than a preset load level threshold value, which indicates that the load of the serving cell is heavy, the triggering 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, so that when the CPE queries that the load level of the serving cell is 4 or 5 from the cloud device, the triggering condition for cell switching is satisfied.

Step 406, if the triggering condition for cell switching is satisfied, the CPE selects a target cell from the at least one second cell.

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

The target cell may be the serving cell after CPE handover.

The method for selecting the target cell by the CPE may, for example, include the following steps:

And a second condition: the load level of the second cell is less than a preset load level threshold value.

And (3) carrying out a third condition: 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 the above step 405, the third condition is necessarily satisfied when the second condition is satisfied, and therefore, in this case, the third condition may not be needed.

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

And step B, if only one cell simultaneously meeting the three conditions is available, determining that the cell is the target cell, and if a plurality of cells simultaneously meeting the three conditions are available, selecting one cell as the target cell.

The method for selecting a cell from a plurality of cells satisfying the above three conditions at the same time may be, for example: selecting a cell with the minimum predicted load grade, or determining a random number according to a random algorithm, and then selecting a cell from the plurality of cells according to the random number.

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 met.

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

After the above step 407 is completed, the cell handover condition is satisfied, and the CPE can handover to the target cell.

For example, a timer may be set, and when the timer expires, the transmission of the "heartbeat" data is stopped several times, so that the CPE enters an idle state, or when the CPE is not in service, the transmission of the "heartbeat" data is stopped several times, so that the CPE enters an idle state. And after the CPE enters an idle state, finishing cell reselection, and after reselecting a target cell, entering a connected state.

Optionally, after the CPE is switched to the target cell, information of the target cell, such as an identifier of the target cell, link signal quality information, and a resource allocation ratio, may also be determined, and then the information of the target cell is reported to the network device.

Based on the above implementation scheme, the terminal device (e.g., CPE) in the connected state may obtain the load levels of the serving cell and the at least one second cell from the cloud device, and reselect and switch to a target cell when the load level of the serving cell exceeds a preset load level threshold, so that sufficient resources are ensured for data transmission of the terminal device, and the communication efficiency of the terminal device may be improved.

Example four

As shown in fig. 5, another communication method provided in the application embodiment is to evaluate network load of a cell by a cloud device, determine a target cell satisfying a condition after receiving a request message from a terminal device, and notify the terminal device to switch to the target cell.

The cloud device may be a network device (e.g., a base station), a network management device, or a cloud server, or a third-party device, etc.

The method comprises the following steps:

step 501 to step 502, which are the same as step 401 to step 402 of the embodiment corresponding to fig. 4.

In step 503, the CPE sends a request message to the cloud end device, where the request message is used to request to acquire information of the target cell.

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

The request message of this step 503 contains a list of cell identities and an RSRP value of each cell in the list of cell identities measured by the CPE, wherein the list of cell identities comprises an identity of the serving cell and an identity of the 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 value. 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 the CPE, the cell corresponding to cell ID2 is neighbor 1 of the serving cell of the CPE, the cell corresponding to cell ID3 is neighbor 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 neighbor 1 of the serving cell measured by the CPE, and RSRP3 is the RSRP value of neighbor 2 of the serving cell measured by the CPE.

method one, periodic triggering

Namely, the CPE periodically sends a request message for requesting to acquire information of the target cell to the cloud device.

Method two, event triggering

For example, if the measured RSRP value of the serving cell is greater than the preset RSRP threshold value and the resource allocation proportion of the serving cell is smaller than the preset proportion threshold value, the CPE sends a request message for requesting to acquire information of the target cell to the cloud device.

Through the method one or the method two, the CPE can be triggered to request the cloud end equipment to acquire the information of the target cell.

In step 504, the cloud device determines whether a cell switching trigger condition is met according to the load level of the serving cell.

For example, when the load level of the serving cell is greater than a preset load level threshold value, which indicates that the load of the serving cell is heavy, the triggering 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, so that when the cloud device queries that the load level of the serving cell is 4 or 5, the triggering condition for cell switching is met.

And 505, if the triggering condition of cell switching 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 of 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 corresponding embodiment of fig. 4, and reference may be made to the foregoing description.

In step 506, the cloud device sends information of the target cell, which may be an identifier of the target cell, to the CPE.

It should be noted that, if it is determined in the step 504 that the triggering condition for cell handover is not satisfied, or if no target cell satisfying the condition is found in the step 505, the step 506 may be replaced with: the cloud end equipment sends an indication message to the CPE to indicate that a proper target cell is not found or no information is sent.

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

It is to be understood that, in the above embodiments of the method, the steps or operations implemented by the terminal device may also be implemented by a component (e.g., a chip or a circuit) configured in the terminal device, and the steps or operations implemented by the cloud device may also be implemented by a component (e.g., a chip or a circuit) configured in the cloud device.

Fig. 8 is a schematic diagram of a communication device according to an embodiment of the present application. The apparatus is configured to implement the steps performed by the corresponding terminal device in the embodiments of fig. 2 to fig. 5, as shown in fig. 8, the apparatus 800 includes a transceiver 810 and a processing unit 820.

In a first embodiment:

a processing unit 820, configured to determine a load value of a first cell according to a resource allocation proportion of the first cell, where the resource allocation proportion of the first cell is obtained according to an amount of uplink resources actually allocated to the terminal device; measuring to obtain an RSRP value of the first cell; judging whether the first cell meets a cell replacement triggering condition or not according to the load value of the first cell and the RSRP value of the first cell; if the triggering condition of cell replacement is met, selecting a target cell from at least one second cell according to the historical load value of the at least one second cell, wherein the second cell is different from the first cell; and changing to the target cell.

In a possible implementation method, the processing unit 820 is configured to determine whether the first cell meets a cell change triggering condition according to the load value of the first cell and the RSRP value of the first cell, and specifically includes: and if the RSRP value of the first cell is greater than a preset first RSRP threshold value and the load value of the first cell is greater than a preset first load threshold value, determining that the first cell meets the cell change triggering condition.

In a possible implementation method, the processing unit 820 is configured to select a target cell from at least one second cell according to a historical load value of the at least one second cell, and specifically includes: the method comprises the steps of selecting a candidate cell from the at least two second cells, wherein the RSRP value of the candidate cell is larger than a preset second RSRP threshold value, the historical load value of the candidate cell is smaller than a preset second load threshold value, and the historical load value of the candidate cell is smaller than the load value of the first cell; and selecting a cell from the candidate cells as the target cell according to a preset rule.

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

In a possible implementation method, the processing unit 820 is further configured to determine a resource allocation proportion of the first cell according to an uplink resource amount actually allocated to the terminal device and a resource amount required by the terminal device, where the resource allocation proportion is a resource allocation proportion in an uplink direction of the first cell; or, determining a resource allocation proportion of the first cell according to an uplink resource amount actually allocated to the terminal device and a resource amount required by the network device, where the resource allocation proportion is a downlink resource allocation proportion of the first cell.

In a possible implementation method, the historical resource allocation proportion of the first cell is measured by the communication device or obtained 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 a historical load value of the at least one second cell.

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

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

In a possible implementation method, the first cell is a resident cell of the terminal device in an idle state, and the cell is replaced with a cell reselection; or, the first cell is a serving cell of the terminal device in a connected state, and the cell is changed to cell switching.

In a second embodiment:

a transceiver 810, configured to send a request message to a cloud device, where the request message includes identification information of at least two cells, where the at least two cells include a first cell and at least one second cell, the request message is used to request to acquire 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; receiving load levels of the at least two cells from the cloud device; a processing unit 820, 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 if the load level of the first cell is greater than a preset first load level threshold value; and switching 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, and specifically includes:

the method comprises the steps of selecting a candidate cell from the at least one second cell, wherein the RSRP value of the candidate cell is larger than a preset first RSRP threshold value, the load level of the candidate cell is smaller than a preset second load level threshold value, and the load level of the candidate cell is smaller than the load level of the first cell; and selecting a cell from the candidate cells as the target cell according to a preset rule.

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

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

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

In a third embodiment:

a transceiver 810, configured to send a request message to a cloud device, where the request message includes identification information of at least two cells and RSRP values respectively corresponding to the at least two cells, where the at least two cells include a first cell and at least one second cell of a terminal device, the request message is used to request to acquire identification information of a target cell after handover, the first cell is a serving cell of the terminal device, and the second cell is different from the first cell; receiving identification information of the target cell from the cloud device; a processing unit 820 configured to handover to the target cell.

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

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

Optionally, the communication device 800 may further include a storage unit, which is used for storing data or instructions (also referred to as codes or programs), and the above units may interact with or be coupled to the storage unit to implement corresponding methods or functions. For example, the processing unit 820 may read data or instructions in the storage unit, so that the communication apparatus implements the method in the above-described embodiments.

It should be understood that the division of the units in the above apparatus is only a division of logical functions, and the actual implementation may be wholly or partially integrated into one physical entity or may be physically separated. And the units in the device can be realized in the form of software called by the processing element; or may be implemented entirely in hardware; part of the units can also be realized in the form of software called by a processing element, and part of the units can be realized in the form of hardware. For example, each unit may be a processing element separately set up, or may be implemented by being integrated into a chip of the apparatus, or may be stored in a memory in the form of a program, and a function of the unit may be called and executed by a processing element of the apparatus. In addition, all or part of the units can be integrated together or can be independently realized. The processing element described herein may in turn be a processor, which may be an integrated circuit having signal processing capabilities. In the implementation process, the steps of the method or the units above may be implemented by integrated logic circuits of hardware in a processor element or in a form called by software through the processor element.

In one example, the units in any of the above apparatuses may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), or a combination of at least two of these Integrated Circuit formats. As another example, when a Unit in a device may be implemented in the form of a Processing element scheduler, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of invoking programs. As another example, these units may be integrated together and implemented in the form of a system-on-a-chip (SOC).

The above transceiving unit 810 is an interface circuit of the apparatus for transmitting and receiving signals to and from other apparatuses. For example, when the device is implemented in the form of a chip, the transceiving unit 810 is an interface circuit for the chip to transmit signals to or receive signals from other chips or devices.

Fig. 9 is a schematic diagram of another communication apparatus according to an embodiment of the present application. The apparatus is configured to implement the steps executed by the corresponding cloud device in the embodiments of fig. 4 to fig. 5, as shown in fig. 9, the apparatus 900 includes a transceiver unit 910 and a processing unit 920.

In a first embodiment:

a transceiving unit 910, configured to receive a request message from a first terminal device, where the request message includes identification information of at least two cells, where the at least two cells include a first cell and at least one second cell of the first terminal device, the request message is used to request to obtain 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; and sending the load grades of the at least two cells to the first terminal equipment, wherein the load grades of the at least two cells are used for the first terminal equipment to select a target cell for handover.

In a possible implementation method, the transceiving unit 910 is further configured to receive first information of the first cell from the first terminal device, where the first information includes identification information of the first cell, first link signal quality information of the first cell, and a first resource allocation ratio of the first cell; receiving second information of the first cell from at least one second terminal device in the first cell, wherein the second information includes identification information of the first cell, second link signal quality information of the first cell and a second resource allocation proportion of the first cell, and the first cell is a serving cell of the second terminal device; a processing unit 920, configured to determine a 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, and specifically includes: the resource allocation method comprises the steps of determining at least one resource allocation proportion according to the first information and the second information, wherein link signal quality information corresponding to the at least one resource allocation proportion respectively meets a preset link signal quality requirement; determining a load level of the first cell according to the at least one resource allocation proportion.

In a second embodiment:

a transceiver unit 910, configured to receive a request message from a first terminal device, where the request message includes identification information of at least two cells and RSRP values respectively corresponding to the at least two cells, where the at least two cells include a first cell and at least one second cell, and the request message is used to request to acquire identification information of a target cell after handover of the terminal device, where the first cell is a serving cell of the first terminal device, and the second cell is different from the first cell; sending identification information of a target cell to first terminal equipment, wherein the identification information of the target cell is used for switching the first terminal equipment to the target cell; a processing unit 920, 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 if the load level of the first cell is greater than a preset first load level threshold value.

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, and specifically includes: the method comprises the steps of selecting a candidate cell from the at least one second cell, wherein the RSRP value of the candidate cell is larger than a preset RSRP threshold value, the load level of the candidate cell is smaller than a preset second load level threshold value, and the load level of the candidate cell is smaller than the load level of the first cell; and the cell selection unit is used for selecting a cell from the candidate cells as the target cell according to a preset rule.

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

In a possible implementation method, the transceiving unit 910 is further configured to receive first information of the first cell from the first terminal device, where the first information includes identification information of the first cell, first link signal quality information of the first cell, and a first resource allocation ratio of the first cell; receiving second information of the first cell from at least one second terminal device in the first cell, wherein the second information includes identification information of the first cell, second link signal quality information of the first cell and a second resource allocation proportion of the first cell, and the first cell is a serving cell of the second terminal device; the processing unit 920 is further configured to determine a 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, and specifically includes: the resource allocation method comprises the steps of determining at least one resource allocation proportion according to the first information and the second information, wherein link signal quality information corresponding to the at least one resource allocation proportion respectively meets a preset link signal quality requirement; for determining a load level of the first cell in accordance with the at least one resource allocation proportion.

Optionally, the communication device 900 may further include a storage unit, which is used for storing data or instructions (also referred to as codes or programs), and the above units may interact with or be coupled to the storage unit to implement corresponding methods or functions.

In one example, the units in any of the above apparatuses may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), or a combination of at least two of these integrated circuit forms. As another example, when a unit in a device may be implemented in the form of a processing element scheduler, the processing element may be a general purpose processor, such as a Central Processing Unit (CPU) or other processor capable of invoking a program. As another example, these units may be integrated together, implemented in the form of a System On Chip (SOC).

The above transceiving unit 910 is an interface circuit of the apparatus for transmitting and receiving signals to and from other apparatuses. For example, when the device is implemented in the form of a chip, the transceiving unit 910 is an interface circuit for the chip to transmit signals to or receive signals from other chips or devices.

Referring to fig. 10, a schematic diagram of a cloud device provided in the embodiment of the present application is used to implement the operation of the cloud device in the above embodiments. As shown in fig. 10, the cloud device includes: the processor 1010 and the interface 1030, and optionally the cloud device, further includes a memory 1020. The interface 1030 is used to enable communication with other devices.

The method executed by the cloud device in the above embodiments may 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 may execute the method performed by the cloud device in the above method embodiments by calling a program in a memory. The processor here may be an integrated circuit with signal processing capabilities, such as a CPU. The cloud device may 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. Alternatively, the above implementations may be combined.

Specifically, the functions/implementation processes of the transceiving unit 910 and the processing unit 920 in fig. 9 can be implemented by the processor 1010 in the cloud device 1000 shown in fig. 10 calling the computer executable instructions stored in the memory 1020. Alternatively, the functions/implementation processes of the processing unit 920 in fig. 9 may be implemented by the processor 1010 in the cloud device 1000 shown in fig. 10 calling the computer execution instructions stored in the memory 1020, and the functions/implementation processes of the transceiving unit 910 in fig. 9 may be implemented by the interface 1030 in the cloud device 1000 shown in fig. 10.

Fig. 11 is a schematic structural diagram of a terminal device according to an embodiment of the present application. The terminal device is used for realizing the operation of the terminal device in the above embodiment. As shown in fig. 11, the terminal device includes: antenna 1110, radio 1120, signal processing 1130. The antenna 1110 is connected to a radio 1120. In the downlink direction, the radio frequency device 1120 receives information sent by the network device or the cloud device through the antenna 1110, and sends the information sent by the network device or the cloud device to the signal processing portion 1130 for processing. In the uplink direction, the signal processing portion 1130 processes the information of the terminal device and sends the information to the radio frequency device 1120, and the radio frequency device 1120 processes the information of the terminal device and sends the information to the network device or the cloud device through the antenna 1110.

The signal processing section 1130 is used to implement processing of each communication protocol layer of data. The signal processing part 1130 may be a subsystem of the terminal device, and the terminal device may further include other subsystems, such as a central processing subsystem, for implementing processing on an operating system and an application layer of the terminal device; for another example, the peripheral subsystem is used to implement connections to other devices. The signal processing part 1130 may be a separately provided chip. Alternatively, the above means may be located at the signal processing part 1130.

The signal processing portion 1130 may include one or more processing elements 1131, including, for example, a master CPU and other integrated circuits, and interface circuitry 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, and the programs for executing the methods executed by the terminal device in the above methods may or may not be stored in the storage element 1132, for example, in a memory other than the signal processing section 1130, and the signal processing section 1130 loads the programs into a buffer for use when in use. The interface circuit 1133 is used to communicate with the device. The above means may be located in the signal processing portion 1130, and the signal processing portion 1130 may be implemented by a chip including at least one processing element for performing the steps of any of the methods performed by the above terminal device and interface circuitry for communicating with other means. In one implementation, the unit for implementing each step in the above method may be implemented in the form of a processing element scheduler, for example, the apparatus includes a processing element and a storage element, and the processing element calls a program stored in the storage element to execute the method executed by the terminal device in the above method embodiment. The memory elements may be memory elements with the processing elements on the same chip, i.e. on-chip memory elements.

In another implementation, the program for performing the method performed by the terminal device in the above method may be a memory element on a different chip than the processing element, i.e. an off-chip memory element. At this time, the processing element calls or loads a program from the off-chip storage element onto 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 for implementing the steps of the above method may be configured as one or more processing elements, which are disposed on the signal processing portion 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 may be integrated together to form a chip.

The units implementing the steps of the above method may be integrated together and implemented in the form of a system-on-a-chip (SOC) chip for implementing the above method. At least one processing element and a storage element can be integrated in the chip, and the processing element calls the stored program of the storage element to realize the method executed by the terminal equipment; or, at least one integrated circuit may be integrated in the chip, for implementing the method executed by the above terminal device; alternatively, the above implementation modes may be combined, the functions of the partial units are implemented in the form of a processing element calling program, and the functions of the partial units are implemented in the form of an integrated circuit.

It is seen that the above apparatus may comprise at least one processing element and interface circuitry, wherein the at least one processing element is configured to perform the method performed by any one of the terminal devices provided by the above method embodiments. The processing element may: namely, the method calls the program stored in the storage element to execute part or all of the steps executed by the terminal equipment; it is also possible to: that is, some or all of the steps performed by the terminal device are performed by integrated logic circuits of hardware in the processor element in combination with the instructions; of course, some or all of the steps performed by the terminal device may be performed in combination with the first manner and the second manner.

The processing elements herein, like those described above, may be a general purpose processor, such as a CPU, or one or more integrated circuits configured to implement the above methods, such as: 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. The storage element may be a memory or a combination of a plurality of storage elements.

Those of ordinary skill in the art will understand that: the various numbers of the first, second, etc. mentioned in this application are only used for the convenience of description and are not used to limit the scope of the embodiments of this application, but also to indicate the sequence. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one" means one or more. At least two means two or more. "at least one," "any," or similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one (one ) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple. "plurality" means two or more, and other terms are analogous.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of the processes should be determined by their functions and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device including one or more available media integrated servers, data centers, and the like. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The various illustrative logical units and circuits described in this application may be implemented or operated upon by design of a general purpose processor, a digital signal processor, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.

The steps of a method or algorithm described in the embodiments herein may be embodied directly in hardware, in a software element executed by a processor, or in a combination of the two. The software cells may be stored in Random Access Memory (RAM), flash Memory, Read-Only Memory (ROM), EPROM Memory, EEPROM Memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. For example, a storage medium may be coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In one or more exemplary designs, the functions described herein may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media that facilitate transfer of a computer program from one place to another. Storage media may be any available media that can be accessed by a general purpose or special purpose computer. For example, such computer-readable media can include, but is not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to carry or store program code in the form of instructions or data structures and which can be read by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Additionally, any connection is properly termed a computer-readable medium, and, thus, is included if the software is transmitted from a website, server, or other remote source over a coaxial cable, fiber optic computer, twisted pair, Digital Subscriber Line (DSL), or wirelessly, e.g., infrared, radio, and microwave. The disk (disk) and Disc (Disc) include compact Disc, laser Disc, optical Disc, Digital Versatile Disc (DVD), floppy disk and blu-ray Disc, where the disk usually reproduces data magnetically, and the Disc usually reproduces data optically with laser. Combinations of the above may also be included in the computer-readable medium.

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

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application. The foregoing description of the specification may enable any person skilled in the art to make or use the teachings of the present application, and any modifications based on the disclosed teachings should be considered as obvious in the art, and the general principles described herein may be applied to other variations without departing from the spirit or scope of the present application. Thus, the disclosure is not intended to be limited to the embodiments and designs described, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include such modifications and variations.

Claims

1. A method of communication, comprising:

the method comprises the steps that a terminal device determines a load value of a first cell according to a resource allocation proportion of the first cell, wherein the resource allocation proportion of the first cell is obtained according to an uplink resource amount actually allocated to the terminal device;

the terminal equipment measures and obtains a Reference Signal Received Power (RSRP) value of the first cell;

the terminal equipment judges whether the first cell meets a cell replacement triggering condition or not according to the load value of the first cell and the RSRP value of the first cell;

if the triggering condition of cell replacement is met, the terminal equipment selects a target cell from at least one second cell according to the historical load value of the at least one second cell, wherein the second cell is different from the first cell;

and the terminal equipment is changed to the target cell.

2. The method of claim 1, wherein the determining, by the terminal device, whether the first cell satisfies a cell change triggering condition according to the load value of the first cell and the RSRP value of the first cell comprises:

if the RSRP value of the first cell is greater than a preset first RSRP threshold value, and the load value of the first cell is greater than a preset first load threshold value, the terminal device determines that the first cell meets a cell change triggering condition.

3. The method of claim 1 or 2, wherein the selecting, by the terminal device, 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 equipment selects a candidate cell from the at least two second cells, wherein the RSRP value of the candidate cell is greater than a preset second RSRP threshold value, the historical load value of the candidate cell is less than a preset second load threshold value, and the historical load value of the candidate cell is less than the load value of the first cell;

and the terminal equipment selects a cell from the candidate cells according to a preset rule to serve as the target cell.

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

the terminal equipment selects a cell with the minimum load value in the candidate cells as the target cell; alternatively, the first and second electrodes may be,

and the terminal equipment determines a random number according to a random number algorithm, and selects a cell from the candidate cells as the target cell according to the random number.

5. The method of any of claims 1-4, further comprising:

the terminal equipment determines the resource allocation proportion of the first cell according to the uplink resource amount actually allocated to the terminal equipment and the resource amount required by the terminal equipment, wherein the resource allocation proportion is the resource allocation proportion of the first cell in the uplink direction; alternatively, the first and second electrodes may be,

and the terminal equipment determines the resource allocation proportion of the first cell according to the uplink resource amount actually allocated to the terminal equipment and the resource amount required by the network equipment, wherein the resource allocation proportion is the resource allocation proportion of the first cell in the downlink direction.

6. The method of any of claims 1-5, wherein the resource allocation proportion of the first cell is determined based on a historical resource allocation proportion of the first cell; alternatively, the first and second electrodes may be,

the 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.

7. The method of claim 6, wherein the historical allocation proportion of resources for the first cell is measured by the terminal device or obtained by the terminal device from a network device.

8. The method of any of claims 1-7, further comprising:

and the terminal equipment periodically accesses the at least one second cell and acquires the historical load value of the at least one second cell.

9. The method of any of claims 1-8, further comprising:

the terminal equipment determines the load value of the target cell;

and the terminal equipment reports the load value of the target cell to network equipment.

10. The method of any of claims 1-9, wherein prior to the terminal device changing to the target cell, further comprising:

the terminal equipment is in an idle state, and the terminal equipment adjusts the RSRP values of the first cell and the target cell so as to meet reselection rules; alternatively, the first and second electrodes may be,

the terminal equipment is in a connected state, and the terminal equipment adjusts the RSRP values of the first cell and the target cell so as to meet the switching rule.

11. The method of any one of claims 1 to 9,

the terminal equipment is in an idle state, the first cell is a resident cell of the terminal equipment, and the cell is replaced by cell reselection; alternatively, the first and second electrodes may be,

the terminal equipment is in a connected state, the first cell is a service cell of the terminal equipment, and the cell is changed into cell switching.

12. A method of communication, comprising:

the method comprises the steps that a terminal device sends a request message to a cloud device, wherein the request message comprises identification information of at least two cells, the at least two cells comprise a first cell and at least one second cell, the request message is used for requesting to acquire load levels of the at least two cells, the first cell is a service cell of the terminal device, and the second cell is different from the first cell;

the terminal equipment receives the load levels of the at least two cells from the cloud equipment;

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

and the terminal equipment is switched to the target cell.

13. The method of claim 12, wherein 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 comprises:

the terminal equipment selects a candidate cell from the at least one second cell, wherein the Reference Signal Received Power (RSRP) value of the candidate cell is larger than a preset first RSRP threshold value, the load level of the candidate cell is smaller than a preset second load level threshold value, and the load level of the candidate cell is smaller than the load level of the first cell;

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

15. The method of any one of claims 12-14, wherein prior to the terminal device sending the request message to the cloud device, further comprising:

the terminal equipment determines that the period for sending the request message arrives; alternatively, the first and second electrodes may be,

and the terminal equipment determines that the RSRP value of the first cell is greater than a preset second RSRP threshold value and the load value of the first cell is greater than a preset load threshold value.

16. The method of 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 information of the first cell to the cloud device, the information of the first cell includes identification information of the first cell, link signal quality information of the first cell and resource allocation proportion of the first cell, and the information of the first cell is used for the cloud device to determine the load level of the first cell.

17. The method of claim 16, wherein the resource allocation proportion of the first cell is determined based on a historical resource allocation proportion of the first cell; alternatively, the first and second electrodes may be,

18. The method of claim 17, wherein the historical allocation proportion of resources for the first cell is measured by the terminal device or obtained by the terminal device from a network device.

19. The method of any of claims 12-18, wherein prior to the terminal device handing over to the target cell, further comprising:

and the terminal equipment adjusts the RSRP values of the first cell and the target cell so as to meet the switching rule.

20. A method of communication, comprising:

the method comprises the steps that a cloud end device receives a request message from a first terminal device, wherein the request message comprises identification information of at least two cells, the at least two cells comprise a first cell and at least one second cell of the first terminal device, the request message is used for requesting to acquire load levels of the at least two cells, the first cell is a service cell of the first terminal device, and the second cell is different from the first cell;

and the cloud terminal equipment sends the load grades of the at least two cells to the first terminal equipment, wherein the load grades of the at least two cells are used for selecting a target cell to be switched by the first terminal equipment.

21. The method of claim 20, further comprising:

the cloud end device receives first information of the first cell from the first terminal device, wherein the first information comprises identification information of the first cell, first link signal quality information of the first cell and a first resource allocation proportion 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, wherein the second information includes identification information of the first cell, second link signal quality information of the first cell and a second resource allocation proportion of the first cell, and the first cell is a serving cell of the second terminal device;

and the cloud equipment determines the load level of the first cell according to the first information and the second information.

22. The method of claim 21, wherein the cloud device determining the load level of the first cell based on the first information and the second information comprises:

the cloud device determines at least one resource allocation proportion according to the first information and the second information, wherein link signal quality information corresponding to the at least one resource allocation proportion respectively meets a preset link signal quality requirement;

and the cloud equipment determines the load level of the first cell according to the at least one resource allocation proportion.

23. The method of claim 21 or 22, wherein the first resource allocation proportion of the first cell is determined from a historical resource allocation proportion of the first cell; alternatively, the first and second electrodes may be,

the first resource allocation ratio of the first cell is determined based on a historical resource allocation ratio and a current resource allocation ratio of the first cell.

24. The method of claim 23, wherein the historical allocation proportion of resources for the first cell is measured by the terminal device or obtained by the terminal device from a network device.

25. A terminal device, comprising: a processor and a memory; the memory is configured to store computer-executable instructions that, when executed by the terminal device, are executed by the processor to cause the terminal device to perform the communication method of any one of claims 1-19.

26. A cloud device, comprising: a processor and a memory; the memory is configured to store computer-executable instructions, and when the cloud device is running, the processor executes the computer-executable instructions stored in the memory to cause the cloud device to perform the communication method according to any one of claims 20 to 24.

27. A chip system, comprising:

a memory for storing a computer program;

a processor for calling and running the computer program from the memory so that a device in which the system-on-chip is installed performs the communication method according to any one of claims 1 to 24.

28. A computer-readable storage medium, characterized by comprising a computer program which, when run on a computer, causes the computer to perform a communication method according to any one of claims 1-24.

29. A computer program product, characterized in that the computer program product comprises a computer program which, when run on a computer, causes the computer to carry out the communication method according to any one of claims 1-24.