CN117202318A

CN117202318A - Cell selection method, device, storage medium, and program product

Info

Publication number: CN117202318A
Application number: CN202210602803.9A
Authority: CN
Inventors: 郑岚; 苑雪; 袁乃华; 范晨; 陈迎; 张路昊
Original assignee: Chengdu TD Tech Ltd
Current assignee: Chengdu TD Tech Ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2023-12-08

Abstract

The embodiment of the application provides a cell selection method, a device, a storage medium and a program product, wherein the method acquires a first maximum transmitting power corresponding to the power level of terminal equipment, receives a system message sent by network equipment, analyzes the system message, acquires a configuration value of the maximum allowed transmitting power of a terminal in a cell corresponding to a target cell, wherein the configuration value is larger than the maximum transmitting power corresponding to the minimum power level in the terminal of each power level in the target cell, and determines whether to select the target cell according to the smaller one of the first maximum transmitting power and the configuration value. The cell selection method provided by the embodiment of the application not only can exert the high-power advantage of the terminal with higher power as much as possible, but also can ensure the accuracy of cell selection.

Description

Cell selection method, device, storage medium, and program product

Technical Field

The embodiment of the application relates to the technical field of wireless communication, in particular to a cell selection method, a device, a storage medium and a program product.

Background

In a long term evolution (Long Term Evolution, LTE) network (e.g. a broadband trunked communication (Broadband Trunking Communication, B-trunk) network), there is typically only one terminal of a power class (e.g. a terminal of power class 3, maximum power of 23 dBm), so the maximum allowed transmit power Pemax of the terminal in the configured cell is typically 23dBm, while the power compensation Pcompensation parameter value involved in the cell selection based on the S rule of the B-trunk network is related to the configured Pemax. At present, in order to solve the uplink coverage problem caused by power limitation, a high-power terminal with higher power level can be introduced into a B-trunk network.

However, for the coexistence situation of multiple power class terminals, the original S rule is adopted to perform cell selection, so that terminals with different power classes cannot be considered, and the accuracy of cell selection is reduced. Therefore, how to achieve accurate cell selection is a current problem to be solved.

Disclosure of Invention

The embodiment of the application provides a cell selection method, a device, a storage medium and a program product, so as to improve the accuracy of cell selection.

In a first aspect, an embodiment of the present application provides a cell selection method, including:

acquiring a first maximum transmitting power corresponding to the power level of the terminal equipment;

receiving a system message sent by network equipment, and analyzing the system message to obtain a configuration value of the maximum allowed transmitting power of the terminal in the cell corresponding to the target cell; the configuration value is larger than the maximum transmitting power corresponding to the minimum power level in the terminals with all power levels in the target cell;

determining whether to select the target cell based on the smaller of the first maximum transmit power and the configuration value.

In one possible design, the determining whether to select the target cell according to the smaller of the first maximum transmit power and the configuration value includes:

determining the smaller as a second maximum transmit power allowed by the target cell for the terminal device;

determining a receiving power value corresponding to the target cell according to the second maximum transmitting power;

and determining whether to select the target cell according to whether the receiving power value meets a preset criterion.

In one possible design, the determining the receiving power value corresponding to the target cell according to the second maximum transmitting power includes:

determining a difference between the second maximum transmit power and the first maximum transmit power;

determining a power compensation value corresponding to the target cell according to the difference value;

and determining the receiving power value according to the power compensation value.

In one possible design, the determining, according to the difference, a power compensation value corresponding to the target cell includes:

and determining the larger difference value between the difference value and a preset value as a power compensation value corresponding to the target cell.

In one possible design, determining the reception power value according to the power compensation value includes:

acquiring a received signal level value corresponding to the target cell, a minimum level value of a resident cell corresponding to the target cell and a bias value corresponding to the minimum level value of the resident cell;

and determining the receiving power value according to the receiving signal level value, the minimum level value of the resident cell, the bias value and the power compensation value.

In a second aspect, an embodiment of the present application provides a cell selection method, including:

a system message is sent to a terminal device, so that the terminal device analyzes the system message to obtain a configuration value of the maximum allowed transmitting power of the terminal in a cell corresponding to a target cell; and the configuration value is larger than the maximum transmitting power corresponding to the minimum power class in the terminals with all power classes in the target cell.

In one possible design, the method further comprises:

responding to the touch operation of a user, and generating a configuration value of the maximum allowed transmitting power of the terminal in the cell corresponding to the target cell;

and generating the system message according to the configuration value.

In a third aspect, an embodiment of the present application provides a terminal device, including:

the acquisition module is used for acquiring a first maximum transmitting power corresponding to the power level of the terminal equipment;

the analyzing module is configured to receive a system message sent by a network device, and analyze the system message to obtain a cell selection device corresponding to a target cell, where the analyzing module includes: a configuration value of maximum allowed transmitting power of the terminal in the cell; the configuration value is larger than the maximum transmitting power corresponding to the minimum power class in the terminals with all power classes in the cell;

and the determining module is used for determining whether to select the target cell according to the smaller one of the first maximum transmitting power and the configuration value.

In a fourth aspect, an embodiment of the present application provides a network device, including:

the sending module is used for sending the system information to the terminal equipment so that the terminal equipment analyzes the system information to obtain a configuration value of the maximum allowed transmitting power of the terminal in the cell corresponding to the target cell; the configuration value is larger than the maximum transmitting power corresponding to the minimum power class in the terminals with all power classes in the cell.

In a fifth aspect, an embodiment of the present application provides a power control apparatus, including: at least one processor and memory;

the memory stores computer-executable instructions;

the at least one processor executes the computer-executable instructions stored by the memory such that the at least one processor performs the method as described above for the first aspect and the various possible designs of the first aspect or the method as described above for the second aspect and the various possible designs of the second aspect.

In a sixth aspect, embodiments of the present application provide a computer readable storage medium having stored therein computer executable instructions which, when executed by a processor, implement a method as described above for the first aspect and the various possible designs of the first aspect or a method as described above for the second aspect and the various possible designs of the second aspect.

In a seventh aspect, embodiments of the present application provide a computer program product comprising a computer program which, when executed by a processor, implements the method as described above for the first aspect and the various possible designs of the first aspect or the method as described above for the second aspect and the various possible designs of the second aspect.

The method includes the steps of obtaining a first maximum transmitting power corresponding to a power level of a terminal device, receiving a system message sent by a network device, analyzing the system message, obtaining a configuration value of maximum allowed transmitting power of a terminal in a cell corresponding to a target cell, wherein the configuration value is larger than the maximum transmitting power corresponding to a minimum power level in terminals with different power levels in the target cell, and determining whether to select the target cell according to the smaller one of the first maximum transmitting power and the configuration value. According to the cell selection method provided by the embodiment of the application, the configuration value of Pemax is set as the maximum power value corresponding to the minimum power level terminal in the target cell, so that the high-power advantage of the terminal with higher power can be exerted as much as possible, in addition, whether the target cell is selected or not is determined according to the smaller one of the first maximum transmitting power and the configuration value, and the accuracy of cell selection can be ensured.

Drawings

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

Fig. 1 is a schematic diagram of a scenario of a cell selection method according to an embodiment of the present application;

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

fig. 3 is a second schematic flow chart of a cell selection method according to an embodiment of the present application;

fig. 4 is an interaction schematic diagram of a cell selection method according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 7 is a block diagram of a hardware structure of a cell selection device according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In long term evolution (Long Term Evolution, LTE) networks, such as broadband trunked communication (Broadband Trunking Communication, B-trunk) networks, there is typically only one power class of terminal, i.e. a power class 3 (maximum allowed transmit power of 23 dBm) terminal, so the configured maximum allowed transmit power Pemax of the intra-cell terminal is typically 23dBm, while the power compensation Pcompensation parameter value involved in the cell selection of the B-trunk network is related to the configured Pemax.

The S calculation criteria for cell selection are as follows.

Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffset)–Pcompensation，

Wherein,

srxlev is a cell selection Rx level value, and when Srxlev is larger than 0, cell selection can be performed;

qrxlevmeas is the received signal level value measured by the terminal;

qrxlevmin is the minimum required level value of the terminal resident cell;

qrxlevminoffset is a bias value of Qrxlevmin considered when calculating Srxlev when the terminal resides in the visited public land mobile network VPLMN and periodically searches for higher priority public land mobile network PLMNs;

Pcompensation＝max(Pemax–PPowerClass,0)；

pemax is the maximum allowed transmitting power of the terminal in the cell defined by the network side;

the PPowerClass is the maximum allowed transmit power defined for the power class of the user equipment UE.

With the improvement of the hardware capability of the terminal, a high-power terminal supporting the power level 1 (the maximum allowable transmitting power is 31 dBm) is introduced into the B-trunk network, so as to solve the problem of uplink coverage caused by the limited power of the terminal. The high-power terminal can improve the network coverage capability, but the common power terminal with the original power level of 3 (the maximum allowable transmitting power is 23 dBm) is still used in the network, so that after the high-power terminal is introduced into the network, the coexistence of terminals with different power levels can be necessarily caused. In this case, the original S rule is adopted to perform cell selection, and terminals with different power levels cannot be considered, so that the accuracy of cell selection is reduced.

In view of the above technical problems, the present inventors have studied and found that, when a high-power terminal (terminal of power class 1) is introduced into a network and terminals of different power classes coexist, if a cell-class parameter is increased, a Pcompensation parameter value of a terminal of power class 3 is increased so as to cause a decrease in Srxlex of a common power terminal of power class 3 and a problem of coverage shrinkage of a terminal of power class 3 occurs in order to make the power of the high-power terminal unlimited. However, the capability of the high-power terminal cannot be exerted unless Pemax is increased. Specifically, the cell selection is the result of comprehensive calculation of the terminal according to the network signal strength, network parameter configuration and terminal capability of the location. For a network without introducing a high-power terminal, since only the terminal with the power level of 3 performs cell selection calculation, according to typical configuration, there is no special effect on Pcompensation, and the calculation value is 0dB, and the calculation of cell selection is not affected. However, when a high-power terminal is introduced, the power compensation Pcompensation factor used in cell selection calculation, if the maximum allowable transmit power of the terminals in the cell is configured according to the power level 1 (the maximum allowable transmit power is 31 dBm), the Srxlev of the terminal of the power level 3 (the maximum allowable transmit power is 23 dBm) is reduced by 8dB, so that the cell selection calculation of the terminal of the power level 3 is greatly affected, and the coverage thereof is shrunk; if configured according to power class 3, the terminal of power class 1 is limited by the maximum allowed transmit power of the terminal defined by the network side and cannot exert its high power effect.

After analyzing and obtaining the cause of the problem, the inventor further researches and discovers that according to the protocol, if the network side is not configured with Pemax, the maximum transmitting power of the terminal depends on the actual capability of the terminal, so that the problem caused by the fact that the Pemax needs to be improved after the cell selection algorithm is introduced into the high-power terminal can be avoided theoretically by modifying the Pemax parameter from configuration to non-configuration. However, since the base station power control algorithm also involves the parameter Pemax, if the parameter Pemax is not configured, the corresponding power control algorithm also needs to be optimized synchronously. That is, after the high-power terminal is introduced into the network, the accuracy problem of the S criterion calculation of cell selection can be solved by not configuring Pemax, but other problems are brought, such as that the maximum uplink transmitting power of the cell is not limited, abnormal interference can be brought due to inaccurate power control, and the like. Therefore, after the network introduces the high-power terminal, the Pemax still needs to be improved, so that the high-power terminal can play a role, and meanwhile, the cell selection S criterion algorithm of the terminal needs to be optimized, so that the problem of coverage shrinkage of the common power terminal is avoided. On the premise of this, the inventor further researches and discovers that the Pemax can be set to a higher value through the network equipment so as to exert the advantages of the high-power terminal, and when the fact that the Pemax is not matched with the actual power level of the terminal is determined, the actual reference value of the Pemax is determined, and the calculation of the S criterion is performed based on the actual reference value, so that the accurate cell selection is realized, and therefore, the advantages of the high-power terminal can be exerted, and the accuracy of the cell selection can be improved. Based on this, the embodiment of the application provides a cell selection method, by setting Pemax to a higher value so as to exert the advantages of a high-power terminal, and when determining that the Pemax is not matched with the actual power level of the terminal, determining the actual reference value of Pemax, and calculating the S criterion based on the actual reference value, so as to realize accurate cell selection.

Fig. 1 is a schematic diagram of a scenario of a cell selection method according to an embodiment of the present application. As shown in fig. 1, there are a plurality of terminals with different power levels in the coverage area of the base station 101, and the power level of the terminal 102 and the power level of the terminal 103 are assumed to be 1 and 3, respectively.

In a specific implementation process, the base station 101 sends a system message to each terminal, taking the terminal 102 as an example, after the terminal 102 receives the system message, the system message is parsed to obtain a configuration value of the maximum power Pemax of the terminal allowed in the cell, the configuration value is greater than the maximum transmitting power corresponding to the minimum power level in the terminals with each power level in the target cell, the configuration value is compared with the first maximum transmitting power corresponding to the power level of the terminal 102, and if the configuration value is not matched with the first maximum transmitting power, whether the target cell is selected is determined according to the smaller one of the first maximum transmitting power and the configuration value. According to the cell selection method provided by the embodiment, the configuration value of Pemax is set as the maximum power value corresponding to the minimum power level terminal in the target cell, so that the high-power advantage of the terminal with higher power can be exerted as much as possible, in addition, whether the target cell is selected or not is determined according to the smaller one of the first maximum transmitting power and the configuration value, and the accuracy of cell selection can be ensured.

It should be noted that, the schematic view of the scenario shown in fig. 1 is only an example, and the cell selection method and the scenario described in the embodiment of the present application are for more clearly describing the technical solution of the embodiment of the present application, and do not constitute a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art can know, with the evolution of the system and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is equally applicable to similar technical problems.

The technical scheme of the application is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.

Fig. 2 is a flowchart of a cell selection method according to an embodiment of the present application. As shown in fig. 2, the method includes:

201. and acquiring a first maximum transmitting power corresponding to the power class of the terminal equipment.

The execution body of the embodiment may be a mobile communication device such as a mobile phone, a telephone watch, or the like.

Specifically, the terminal may obtain the capability of the terminal hardware to support the maximum power through a software program installed in the terminal, and identify a corresponding power class for the terminal. For example, a terminal that can support a maximum power of 31dBm may identify a power class of 1, a terminal that can support a maximum power of 26dBm may identify a power class of 2, and a terminal that can support a maximum power of 23dBm may identify a power class of 3.

In this embodiment, the power level of the terminal hardware is usually fixed, so after the power level is determined, the power level may be stored, so that the power level may be directly extracted when needed, and the determination of the power level does not have to be repeated. Of course, if the power level is variable, the determination and acquisition of the power level may be based on an event trigger (e.g., an event of receiving a system message), or periodically, to ensure that the power level is correct.

202. Receiving a system message sent by network equipment, and analyzing the system message to obtain a configuration value of the maximum allowed transmitting power of the terminal in the cell corresponding to the target cell; and the configuration value is larger than the maximum transmitting power corresponding to the minimum power class in the terminals with all power classes in the target cell.

Specifically, the configuration value of the maximum allowed transmit power Pemax of the terminal in the target cell may be carried in a system message, and may be obtained by analyzing the system message sent by the network device.

In this embodiment, in order to be able to play the power advantage of the high-power terminal, the configuration value of Pemax may be set to be greater than the maximum power value corresponding to the minimum power level, for example, for the terminals of power levels 1 to 3, the minimum power level may support the maximum power of 23dBm, and then the configuration value of Pemax may be set to be greater than the value of 23dBm, alternatively, may be set to 26dBm corresponding to the power level 2 or 31dBm corresponding to the power level 1. Of course, the configuration value of Pemax may be set to the maximum transmission power corresponding to the terminal with the highest power class in the target cell. For example, for terminals of power levels 1 to 3, the configuration value of Pemax may be set to 31dBm corresponding to power level 1, and may be specifically set according to actual needs.

203. Determining whether to select the target cell based on the smaller of the first maximum transmit power and the configuration value.

Specifically, when the first maximum transmitting power corresponding to the power level of the terminal device is equal to the configuration value of Pemax, the configuration value may be adopted to determine cell selection according to the original criterion. When the first maximum transmitting power is larger than the configuration value of Pemax, whether the target cell is selected or not can be determined according to the configuration value of Pemax, and when the first maximum transmitting power is smaller than the configuration value of Pemax, whether the target cell is selected or not can be determined according to the first maximum transmitting power.

In some embodiments, the determining whether to select the target cell according to the smaller of the first maximum transmit power and the configuration value may include: determining the smaller as a second maximum transmit power allowed by the target cell for the terminal device; determining a receiving power value corresponding to the target cell according to the second maximum transmitting power; and determining whether to select the target cell according to whether the receiving power value meets a preset criterion.

In this embodiment, the preset criterion may be a criterion related to Pemax, for example, may be an S criterion.

In some embodiments, the determining, according to the second maximum transmit power, the receive power value corresponding to the target cell may include: determining a difference between the second maximum transmit power and the first maximum transmit power; determining a power compensation value corresponding to the target cell according to the difference value; and determining the receiving power value according to the power compensation value.

In some embodiments, the determining, according to the difference value, a power compensation value corresponding to the target cell may include: and determining the larger difference value between the difference value and a preset value as a power compensation value corresponding to the target cell.

In some embodiments, the determining the reception power value according to the power compensation value includes: acquiring a received signal level value corresponding to the target cell, a minimum level value of a resident cell corresponding to the target cell and a bias value corresponding to the minimum level value of the resident cell; and determining the receiving power value according to the receiving signal level value, the minimum level value of the resident cell, the bias value and the power compensation value.

The calculation method for determining whether to select the target cell is exemplified by taking the preset rule as an S criterion as an example.

And when the configuration value of the first maximum transmitting power corresponding to the power level of the terminal equipment is different from that of the Pemax, selecting the cell according to the following expression.

Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffset)–Pcompensation，

Wherein,

qrxlevmeas is the received signal level value measured by the terminal;

qrxlevmin is the minimum required level value of the terminal resident cell;

Pcompensation＝max(Pemax’–PPowerClass,0)；

pemax' is the second maximum transmit power, i.e., the smaller value between the first maximum transmit power and the configuration value;

And when the first maximum transmitting power corresponding to the power level of the terminal equipment is equal to the configuration value of Pemax, selecting the cell according to the following expression.

Srxlev＝Qrxlevmeas–(Qrxlevmin+Qrxlevminoffset)–Pcompensation，

Wherein,

qrxlevmeas is the received signal level value measured by the terminal;

qrxlevmin is the minimum required level value of the terminal resident cell;

Pcompensation＝max(Pemax–PPowerClass,0)；

pemax is the maximum allowed transmitting power of the terminal in the cell defined by the network side, namely the configuration value of Pemax;

According to the cell selection method provided by the embodiment, the configuration value of Pemax is set as the maximum power value corresponding to the minimum power level terminal in the target cell, so that the high-power advantage of the terminal with higher power can be exerted as much as possible, in addition, whether the target cell is selected or not is determined according to the smaller one of the first maximum transmitting power and the configuration value, and the accuracy of cell selection can be ensured.

Fig. 3 is a second flowchart of a cell selection method according to an embodiment of the present application. As shown in fig. 3, the method includes:

301. a system message is sent to a terminal device, so that the terminal device analyzes the system message to obtain a configuration value of the maximum allowed transmitting power of the terminal in a cell corresponding to a target cell; and the configuration value is larger than the maximum transmitting power corresponding to the minimum power class in the terminals with all power classes in the target cell.

In some embodiments, the method further comprises: responding to the touch operation of a user, and generating a configuration value of the maximum allowed transmitting power of the terminal in the cell corresponding to the target cell; and generating the system message according to the configuration value.

Specifically, in response to a touch operation of the network side user on the configuration interface of the Pemax of the network device, the configuration value may be set based on the configuration of each power class terminal in the cell, and optionally, the maximum transmission power of the terminal with the highest power class may be set as the configuration value of Pemax, so as to exert the power advantage of each power class terminal.

Fig. 4 is an interaction schematic diagram of a cell selection method according to an embodiment of the present application. As shown in fig. 4, the method includes:

401. the terminal device 50 determines a first maximum transmit power corresponding to its own power class.

402. The network device 60 generates a system message.

403. The network device 60 sends a system message to the terminal device 50.

404. The terminal device 50 parses the system message to obtain the configuration value of the maximum allowed transmit power of the terminal in the target cell.

405. If the power level does not coincide with the configuration value, the terminal device 50 determines whether to select the target cell based on the smaller of the first maximum transmission power value and the configuration value.

410. The terminal device 50 transmits the cell selection result to the network device 60.

According to the power control method provided by the embodiment, the configuration value of Pemax is set as the maximum power value corresponding to the minimum power level terminal in the target cell, so that the high-power advantage of the high-power terminal can be exerted as much as possible, in addition, whether the target cell is selected or not is determined according to the smaller one of the first maximum transmitting power and the configuration value, and the accuracy of cell selection can be ensured.

Fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present application. As shown in fig. 5, the terminal device 50 includes: an acquisition module 501, a parsing module 502 and a determination module 503.

The obtaining module 501 is configured to obtain a first maximum transmission power corresponding to a power class of the terminal device.

The analyzing module 502 is configured to receive a system message sent by a network device, and analyze the system message to obtain a configuration value of a maximum allowed transmitting power of a terminal in a cell corresponding to a target cell; and the configuration value is larger than the maximum transmitting power corresponding to the minimum power class in the terminals with all power classes in the target cell.

A determining module 503, configured to determine whether to select the target cell according to the smaller one of the first maximum transmission power and the configuration value.

The terminal equipment provided by the embodiment of the application can exert the high-power advantage of the terminal with higher power as far as possible by setting the configuration value of Pemax as the maximum power value corresponding to the terminal with the minimum power level in the target cell, and in addition, whether to select the target cell is determined according to the smaller one of the first maximum transmitting power and the configuration value, so that the accuracy of cell selection can be ensured.

The terminal device provided by the embodiment of the present application may be used to execute the above embodiment of the method using the terminal device as an execution body, and its implementation principle and technical effects are similar, and this embodiment will not be repeated here.

Fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in fig. 6, the network device 60 includes: .

A sending module 601, configured to send a system message to a terminal device, so that the terminal device parses the system message to obtain a configuration value of a maximum allowed transmit power of a terminal in a cell corresponding to a target cell; the configuration value is larger than the maximum transmitting power corresponding to the minimum power class in the terminals with all power classes in the cell.

The network device provided by the embodiment of the application can exert the high-power advantage of the terminal with higher power as far as possible by setting the configuration value of Pemax as the maximum power value corresponding to the terminal with the minimum power level in the target cell, and in addition, whether to select the target cell is determined according to the smaller one of the first maximum transmitting power and the configuration value, so that the accuracy of cell selection can be ensured.

The network device provided in the embodiment of the present application may be used to execute the above embodiment of the method using the network device as an execution body, and its implementation principle and technical effects are similar, and this embodiment will not be repeated here.

Fig. 7 is a block diagram of a hardware structure of a cell selection device according to an embodiment of the present application, where the device may be a mobile communication device such as a mobile phone or a telephone watch when the device is used as a terminal device, and may be a base station when the device is used as a network device.

The apparatus 70 may include one or more of the following components: a processing component 701, a memory 702, a power supply component 703, a multimedia component 704, an audio component 705, an input/output (I/O) interface 706, a sensor component 707, and a communication component 708.

The processing component 701 generally controls overall operation of the device 70, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 701 may include one or more processors 709 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 701 may include one or more modules that facilitate interactions between the processing component 701 and other components. For example, the processing component 701 may include a multimedia module to facilitate interaction between the multimedia component 704 and the processing component 701.

The memory 702 is configured to store various types of data to support operations at the apparatus 70. Examples of such data include instructions for any application or method operating on the device 70, contact data, phonebook data, messages, pictures, video, and the like. The memory 702 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

Power supply assembly 703 provides power to the various components of device 70. The power supply components 703 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 70.

The multimedia component 704 includes a screen between the device 70 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, multimedia component 704 includes a front-facing camera and/or a rear-facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 70 is in an operational mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 705 is configured to output and/or input audio signals. For example, the audio component 705 includes a Microphone (MIC) configured to receive external audio signals when the device 70 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 702 or transmitted via the communication component 708. In some embodiments, the audio component 705 further comprises a speaker for outputting audio signals.

The I/O interface 706 provides an interface between the processing component 701 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 707 includes one or more sensors for providing status assessment of various aspects of the apparatus 70. For example, the sensor assembly 707 may detect the on/off state of the device 70, the relative positioning of the components, such as the display and keypad of the device 70, the sensor assembly 707 may also detect a change in position of the device 70 or a component of the device 70, the presence or absence of user contact with the device 70, the orientation or acceleration/deceleration of the device 70, and a change in temperature of the device 70. The sensor assembly 707 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. The sensor assembly 707 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 707 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 708 is configured to facilitate communication between the apparatus 70 and other devices in a wired or wireless manner. The device 70 may access a wireless network based on a communication standard, such as WiFi,2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 708 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 708 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the apparatus 70 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.

In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as a memory 702, comprising instructions executable by the processor 709 of the apparatus 70 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

The computer readable storage medium described above may be implemented by any type of volatile or non-volatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk. A readable storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

An exemplary readable storage medium is coupled to the processor such the processor can read information from, and write information to, the readable storage medium. In the alternative, the readable storage medium may be integral to the processor. The processor and the readable storage medium may reside in an application specific integrated circuit (Application Specific Integrated Circuits, ASIC for short). The processor and the readable storage medium may reside as discrete components in a device.

Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.

The embodiment of the application also provides a computer program product, comprising a computer program which, when executed by a processor, realizes the cell selection method executed by the cell selection device.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims

1. A method of cell selection, the method comprising:

2. The method of claim 1, wherein the determining whether to select the target cell based on the smaller of the first maximum transmit power and the configuration value comprises:

3. The method according to claim 2, wherein the determining the reception power value corresponding to the target cell according to the second maximum transmission power includes:

4. The method of claim 3, wherein determining the power compensation value corresponding to the target cell based on the difference value comprises:

5. A method according to claim 3, wherein said determining said reception power value from said power compensation value comprises:

6. A method of cell selection, comprising:

7. The method of claim 6, wherein the method further comprises:

and generating the system message according to the configuration value.

8. A terminal device, comprising:

the analysis module is used for receiving the system information sent by the network equipment, analyzing the system information and obtaining a configuration value of the maximum allowed transmitting power of the terminal in the cell corresponding to the target cell; the configuration value is larger than the maximum transmitting power corresponding to the minimum power level in the terminals with all power levels in the target cell;

9. A network device, comprising:

10. A cell selection apparatus, comprising: at least one processor and memory;

the memory stores computer-executable instructions;

the at least one processor executing computer-executable instructions stored in the memory, causing the at least one processor to perform the cell selection method of any one of claims 1 to 5 or the cell selection method of any one of claims 6 to 7.

11. A computer readable storage medium having stored therein computer executable instructions which, when executed by a processor, implement the cell selection method of any of claims 1 to 5 or the cell selection method of any of claims 6 to 7.

12. A computer program product comprising a computer program, which when executed by a processor implements the cell selection method according to any of claims 1 to 5 or the cell selection method according to any of claims 6 to 7.