CN106488407B - Cell selection method and device - Google Patents

Abstract

The present invention provides a method and device for cell selection, the method includes: receiving broadcast information and/or paging messages from a network side, wherein the broadcast information includes: capability information of a first cell and/or a first cell Capability information of neighboring cells of a cell, the paging message includes one of: service demand level, service bearer required rate, delay value, bit error rate requirement, service interruption probability requirement, and service quality assurance capability information or more, the first cell is a resident cell or a serving cell; when there is an uplink or downlink service, select to send services to one or more target cells that match service requirements according to the broadcast information and/or paging messages request or paging response. The cell selection method provided by the present invention enables a terminal to select a suitable cell as a serving cell according to service requirements by expanding the contents of broadcast information and paging message.

Description

Method and device for cell selection

technical field

The present invention relates to the field of wireless technologies, and in particular, to a method and device for cell selection.

Background technique

In SIB1 of the existing LTE system broadcast information, only the public land mobile network (Pubic Land Mobile Network, PLMN), paging area (Tracing Area, TA) and cell identification code Cell ID information for cell reselection and access, and for idle The system information SIB4 (same-frequency), SIB5 (inter-frequency), SIB6 (UTRAN (Universal Terrestrial Radio Access Network)), SIB7 (GRAN, (GSM Radio Access Network)) of the state terminal for cell reselection only gives Frequency information of intra-frequency/inter-frequency/UTRAN/GRAN, and the priority of the corresponding frequency. When the terminal has service requirements, it initiates a random access procedure in the residing cell to send the service request. After the residing cell accepts the service request, the terminal switches to the connected state and starts the service; call the terminal and initiate a service request in the camping cell.

The design of parameters related to intra-frequency/adjacent frequency/inter-system cell selection and cell reselection in the existing system broadcast message, and the design of paging messages determine that when there is an uplink or downlink service, the terminal can only be in the camped cell or Initiating a service request in a serving cell is more suitable for a single service or a situation where there is little difference in demand between services. In the future 5G system, users' business forms will be more abundant than in the 4G era, and different services will have different requirements for speed, delay, and mobility. If the existing cell reselection parameter configuration methods and paging messages are used In the design method, the service request initiated by the terminal in the camping cell may not meet the service requirements. For example, some services may require a 1Gbps user experience rate, but the 5MHz LTE FDD 900M network is connected to the user experience rate. Switching to a suitable cell increases signaling overhead and delay, and degrades user experience, especially for some sensitive services.

In addition, unlike the coverage of one frequency point in a single area in the initial commercial use of 4G, the network will be highly dense in the 5G era, and overlapping coverage of multiple frequency points and multiple cells will be very common, and users can simultaneously receive multiple frequency points/ In a cell, users also have the capability of multi-service and multi-connection, and there is the possibility of optimization.

SUMMARY OF THE INVENTION

The technical problem to be solved by the embodiments of the present invention is to provide a method and device for cell selection, which enables a terminal to select an appropriate cell as a serving cell according to service requirements by extending broadcast information and paging messages.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions:

An embodiment of the present invention provides a method for cell selection, which is applied to a terminal side, and the method includes:

Receive broadcast information and/or paging messages from the network side, wherein the broadcast information includes capability information of the first cell and/or capability information of neighboring cells of the first cell, and the paging message includes service requirement level, service one or more of the rate, delay value, bit error rate requirement, service interruption probability requirement, and service quality assurance capability information required for the bearer, and the first cell is a camping cell or a serving cell;

When there is an uplink service, select to send a service request to one or more target cells that match the service requirements according to the broadcast information; or,

When there is a downlink service, according to the broadcast information and/or the paging message, it is selected to send a service request or a paging response to one or more target cells that match the service requirements.

An embodiment of the present invention provides a method for cell selection, which is applied to a network device side, including:

send broadcast messages and/or paging messages;

Wherein, the broadcast information includes: capability information of the first cell and/or capability information of neighboring cells of the first cell; the paging message includes: service requirement level, rate required for service bearer, delay value, bit error One or more of rate requirements, service interruption probability requirements, and service quality assurance capability information;

The broadcast information and/or paging message are used to assist the terminal to select, according to the broadcast information, to send a service request to one or more target cells that match the service requirements when there is an uplink service; or, when there is a downlink service, according to the The broadcast information and/or paging message selects to send a service request or paging response to one or more target cells that match the service requirements.

An embodiment of the present invention provides an apparatus for cell selection, which is applied to the terminal side, including:

a receiving module, configured to receive broadcast information and/or paging messages; the broadcast information includes: capability information of the first cell and/or capability information of neighboring cells of the first cell; the paging message includes: service requirement level, One or more of the rate, delay value, bit error rate requirement, service interruption probability requirement, and service quality assurance capability information required for the service bearer; wherein, the first cell is a camping cell or a serving cell;

a selection module, configured to select, according to the broadcast information, to send a service request to one or more target cells that match service requirements when there is an uplink service; or, when there is a downlink service, according to the broadcast information and/or paging The message selection sends a service request or paging response to one or more target cells that match the service requirements.

An embodiment of the present invention provides an apparatus for cell selection, which is applied to a network device side, including:

The second sending module is configured to send broadcast information and/or a paging message; wherein, the broadcast information includes: capability information of the first cell and/or capability information of neighboring cells of the first cell, and the paging message includes: One or more types of service requirement level, rate required for service bearing, delay value, bit error rate requirement, service interruption probability requirement, and service quality assurance capability information.

The beneficial effects of the present invention are: in the embodiment of the present invention, the contents of the system broadcast information and the paging message are expanded, and the capability information of the camping cell/serving cell and the information of the camping cell/serving cell and the information of the camping cell/serving cell are added in the system broadcast information Capability information of neighboring cells, and information such as downlink service requirements and service quality assurance capabilities are added to the paging message. The extended broadcast information and paging message can assist the terminal to choose to send a service request or paging response to one or more cells that match the service requirements when there is a service request, so as to select a suitable cell as a serving cell, which is in line with the prior art. Compared with the method of cell selection, the time delay and signaling overhead are reduced, and the user experience is improved. For the 5G system with more abundant business forms than the 4G era, this method can better meet the requirements of different services for speed, delay, mobility, etc.

Description of drawings

FIG. 1 shows one of the flow charts of a method for cell selection on a terminal side provided by an embodiment of the present invention;

FIG. 2 shows the second flow chart of a method for cell selection on a terminal side provided by an embodiment of the present invention;

FIG. 3 shows the third flowchart of the method for cell selection on the terminal side provided by an embodiment of the present invention;

FIG. 4 shows the fourth flowchart of the method for cell selection on the terminal side provided by an embodiment of the present invention;

FIG. 5 shows the fifth flowchart of the method for cell selection on the terminal side provided by an embodiment of the present invention;

6 shows a block diagram of an apparatus for cell selection on a terminal side provided by an embodiment of the present invention;

FIG. 7 shows a flowchart of a method for cell selection on a network device side provided by an embodiment of the present invention;

FIG. 8 shows a flowchart of an example method provided by an embodiment of the present invention;

FIG. 9 shows a block diagram of an apparatus for cell selection on a network device side provided by an embodiment of the present invention.

Detailed ways

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more thoroughly understood, and will fully convey the scope of the present invention to those skilled in the art.

Example 1

According to an aspect of the embodiments of the present invention, a method for cell selection is provided, which is applied to the terminal side. As shown in FIG. 1 , the method includes:

S101. Receive broadcast information and/or a paging message from a network side, wherein the broadcast information includes: capability information of a first cell and/or capability information of neighboring cells of the first cell, and the paging message includes: service requirements One or more of the level, the rate required by the service bearer, the delay value, the bit error rate requirement, the service interruption probability requirement, and the service quality assurance capability information; wherein, the first cell is a camping cell or a serving cell community.

S102. When there is an uplink or downlink service, according to the broadcast information and/or the paging message, select to send a service request or a paging response to one or more target cells that match service requirements.

The capability information of the first cell specifically includes: one or more of the coverage capability, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability of different services, and load conditions of the first cell capability information.

The capability information of the neighboring cells of the first cell specifically includes: one or more of the coverage capability, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability, and load capability of the neighboring cells of the first cell. capability information.

The neighboring cells of the first cell include one or more neighboring cells of the same system and same frequency as the first cell, neighboring cells of the same system and different frequencies as the first cell, and one or more neighboring cells of different systems from the first cell.

The method for cell selection on the terminal side provided by the embodiment of the present invention is mainly to explain how the terminal selects a service that meets the needs of the terminal when the terminal is in different states (idle state or connected state) and has different service requests (uplink service or downlink service). The required cell sends a service request. In the above steps S101 and S102, when there is a downlink service and the terminal is in an idle state, when there is an uplink service and the terminal is connected, when there is a downlink service and the terminal is connected, and when there is a downlink service and the terminal is idle. Therefore, in order to better understand the application of the cell selection method provided in the embodiment of the present invention in the four application scenarios, the following describes the four application scenarios respectively.

In order to clearly understand the application of the method provided by the embodiment of the present invention in the four application scenarios, it is first stipulated that when there is an uplink service, the "target cell" in step S102 is the first target cell, and the "service request" sent is The first service request; when there is a downlink service, the "target cell" in step S102 is the second target cell, and the sent "service request" is the second service request, and this provision is also applicable to other following embodiments.

Application Scenario One

When there is an uplink service and the terminal is in an idle state, as shown in Figure 2, the method includes:

S201. Receive broadcast information of a camping cell (corresponding to a first cell).

Wherein, the broadcast information includes: capability information of the camping cell (the cell where the terminal is currently located when the terminal is in an idle state) and/or capability information of neighboring cells of the camping cell. The capability information of the residing cell specifically includes: coverage capability, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability for different services, and one or more capabilities of load conditions of the residing cell information; the capability information of the neighboring cells of the residing cell specifically includes: coverage capability, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability, and load capability of the neighboring cells of the residing cell. or multiple capability information. The neighboring cells of the camping cell include one or more neighboring cells of the same system and same frequency as the camping cell, neighboring cells of the same system and different frequencies of the camping cell, and one or more neighboring cells of different systems from the camping cell.

S202. When the terminal has an uplink service, select to send a first service request to one or more first target cells matching service requirements.

In the above method, by extending the broadcast information, when the terminal has an uplink service, it can select a suitable cell to send the service request according to the service requirements and the capability information of the cell contained in the broadcast information, and the non-resident cell is the service initiation cell. . Compared with the prior art, the problems such as increased signaling overhead and delay caused by switching to other suitable cells when the camped cell cannot meet the service requirements are avoided.

Further, the step S202 specifically includes:

Step A: According to the capability information of the residing cell and/or the capability information of the neighbouring cells of the residing cell, the service requirements corresponding to the first service request, and the reference signal of the terminal itself to the residing cell and/or the neighbouring cells of the residing cell Based on the measurement result of the received strength and/or the received quality of the reference signal, one or more first target cells are selected to send the first service request. Wherein, the first target cell is a camping cell and/or a neighboring cell of one or more camping cells.

When there is an uplink service, the terminal can select one or more cells (that is, the first target cell) to send the first service request according to the service requirements and the received capability information of the residing cell and/or the neighboring cells of the residing cell, and at the same time In order to ensure that the cell requested for the service is a cell that can provide basic service bearers, the terminal can simultaneously judge whether the cell is not based on its own measurement results of the reference signal reception strength and/or reference signal reception quality of the cell and/or neighboring cells of the cell. It can meet the service requirements, such as whether the received reference signal strength or the received quality of the reference signal meet the preset threshold. If a certain cell meets the service requirement of the terminal, but because the reference signal received strength or quality of the terminal to the cell is lower than the preset threshold, the sending of the first service request to the cell is abandoned.

Further, step A specifically includes:

1) According to pre-configured criteria, each capability index of the service requirement corresponding to the first service request is weighted with the corresponding capability index in the acquired capability information of the residing cell and/or the neighbouring cells of the residing cell. Calculate to obtain the evaluation value of the residing cell and/or the neighboring cell of the residing cell; wherein, the capability index of the service requirement corresponding to the first service request includes but is not limited to one or more of the following indicators: service requirement level, service bearer Required rate, delay value, bit error rate requirement, service interruption probability requirement and service quality assurance capability information.

In order to be able to select a suitable cell as the serving cell, the terminal can compare the indicators corresponding to the service requirements (such as the rate, delay value or bit error rate required by the service bearer) with the received extended broadcast information. Compare the relative indicators in the capability information of the camping cell and/or the neighboring cells of the camping cell, and synthesize the camping cell and/or the neighboring cells of the camping cell according to the pre-defined and configurable weighting criteria Evaluate, obtain an evaluation value of the camping cell and/or a neighboring cell of the camping cell, and select a cell for sending the first service request according to the evaluation value.

2) Selecting one or more cells whose evaluation value exceeds the first preset value and the measurement result of the reference signal reception strength exceeds the second preset value and/or the measurement result of the reference signal reception quality exceeds the third preset value is the first target cell that sends the first service request.

In order to quickly determine the serving cell, the terminal can simultaneously send multiple messages to multiple services that meet the service requirements (that is, the evaluation value exceeds the first preset value) and the measurement results of the cell's reference signal reception strength and/or reference signal reception quality exceed the preset threshold value The cell (corresponding to the second preset value and the third preset value respectively) sends the first service request. When multiple cells agree to the first service request of the terminal, the terminal may preferentially select the cell with the largest evaluation value as the serving cell. It should be noted that, the first preset value, the second preset value and the third preset value can be set according to different uplink services.

In order to further understand the criteria for weighting calculation mentioned in the above method, the embodiment of the present invention provides a preferred embodiment for description, as follows:

Use the formula:

Weighted calculation is performed on each capability index of the service requirement corresponding to the first service request and the corresponding capability index in the acquired capability information of the camping cell and/or the neighboring cells of the camping cell.

Among them, m ₁ , m ₂ ... m _i are the weighted values of each capability index, determined according to the sensitivity of the business to each capability index, 0<m ₁ , m ₂ ... m _i <1, and m ₁ +m ₂ +...+m _i =1; A ₁ , A ₂ . . . A _i are the capability index values of the service requirements corresponding to the first service request; B ₁ , B _{2 .} Capability index value corresponding to each capability index of business requirement.

As shown in the above formula, the evaluation value is the difference between the value of each capability index of the camping cell or the neighboring cells of the camping cell and the value of each capability index corresponding to the service requirement, divided by the capability of the corresponding service requirement. The index value, multiplied by the weighted value of the corresponding capability index, is the sum of the values.

It should be noted that the criterion for weighting calculation mentioned in the embodiment of the present invention is not limited to the above-mentioned method, and the above-mentioned method is only used for further understanding of the criterion for weighting calculation.

Further, in order to reduce the energy consumption overhead of the terminal, the terminal may determine the number of the first target cells according to its own available electricity, and send the first service request.

For example, when the available power of the terminal is lower than a certain value, even if there are more cells that meet the service requirements and the terminal itself measures the reference signal reception strength and/or reference signal reception quality of the camped cell and the cells adjacent to the camped cell As a result, the first service request is only selected to be sent to a preset number of cells. For example, there are 5 cells that meet the service requirements and the reference signal reception strength and/or reference signal reception quality of the terminal itself to the camping cell and the neighboring cells of the camping cell. However, since the terminal's power is lower than 20% at this time, in order to reduce the energy consumption of the terminal, only 3 cells are selected to send the first service request. As for which cells are selected to send the first service request, it can be determined according to the The size of the evaluation value can also be selected randomly, and can also be selected through other screening methods.

Further, the terminal in the idle state (that is, when the first cell is a camping cell) can directly send the first service request to the first target cell; or

Sending a first service request to the residing cell, wherein the first service request carries the cell identification information of the first target cell, which is used to assist the residing cell to redirect the first service request to the first target cell, wherein , the cell identification information includes: cell IP address, cell frequency, cell address, physical resource location pre-allocated for successful establishment of service request or paging response, and one or more information of cell wireless network temporary identification information .

It should be noted that the capability information of the camping cell and the capability information of the neighboring cells of the camping cell can be notified to the terminal in addition to broadcasting, and can also be notified to the terminal by dedicated signaling.

In addition, when there is an uplink service and the terminal is in an idle state, the terminal can first determine whether the residing cell meets the service requirements and its own measurement results of the reference signal reception strength and/or reference signal reception quality of the residing cell. A service connection can be established directly with the residing cell, and the residing cell is used as the serving cell; if not satisfied, according to the extended broadcast information, service requirements, and its own reference signal reception strength and/or reference signal to the neighbouring cells of the residing cell According to the measurement result of the reception quality, an appropriate cell is selected as the serving cell. In addition, the terminal may not directly judge whether the camping cell can be used as a serving cell, but directly receive the reference signal of the camping cell and/or the neighboring cells of the camping cell according to the extended broadcast information, service requirements and its own. The measurement of strength and/or reference signal reception quality selects an appropriate cell as the serving cell.

Application Scenario 2

When there is an uplink service and the terminal is connected, as shown in Figure 3, the method includes:

Step S301: Receive broadcast information of a serving cell (corresponding to the first cell).

The broadcast information includes: capability information of the serving cell (current serving cell when the terminal is in a connected state) and/or capability information of neighboring cells of the serving cell. The capability information of the serving cell specifically includes: coverage capability of the serving cell, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability for different services, and one or more capability information on load conditions; The capability information of the neighboring cells of the serving cell specifically includes: coverage capability, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability, and one or more capabilities of the neighboring cells of the serving cell. information. The neighboring cells of the serving cell include one or more neighboring cells with the same system and same frequency as the serving cell, neighboring cells with the same system and different frequencies as the serving cell, and one or more neighboring cells with different systems from the serving cell.

S302. When the terminal has an uplink service, select to send a first service request to one or more first target cells that match service requirements. Wherein, the first target cell is a serving cell and/or a neighboring cell of one or more serving cells.

The above method, by extending the broadcast information, enables the terminal to select a suitable cell to send the first service request according to the service requirements and the capability information of the cell contained in the broadcast information when there is an uplink service, which avoids the need for the prior art. When the current serving cell cannot meet the service requirements, the signaling overhead and delay increase caused by switching to other suitable cells.

Further, the step S302 is specifically:

Step B, according to the capability information of the serving cell and/or the capability information of the serving cell's neighboring cells, the service requirements corresponding to the first service request, and the reference signal reception strength and/or the reference signal received by the terminal itself to the serving cell and/or the serving cell's neighboring cells. Or referring to the measurement result of the received signal quality, select one or more first target cells to send the first service request.

When there is an uplink service, the terminal can select one or more cells (ie, the first target cell) to send the first service request according to the service requirements and the received capability information of the serving cell and/or the neighboring cells of the serving cell. The cell for the service request is a cell that can provide basic service bearers, and the terminal can simultaneously judge whether the cell can meet the service requirements according to its own measurement results of the reference signal reception strength and/or reference signal reception quality of the serving cell and/or the neighboring cells of the serving cell. , such as whether the received strength of the reference signal or the received quality of the reference signal meets the preset threshold. If a certain cell meets the service requirement of the terminal, but because the reference signal received strength or quality of the terminal to the cell is lower than the preset threshold, the sending of the first service request to the cell is abandoned.

Further, the above-mentioned step B specifically includes:

1) According to pre-configured criteria, carry out each capability index of the service requirement corresponding to the first service request and the corresponding capability index in the acquired capability information of the serving cell and/or the capability information of the neighboring cells of the serving cell. Weighted calculation to obtain the evaluation value of the serving cell and/or the neighboring cells of the serving cell; wherein, the capability index of the service requirement corresponding to the first service request includes but is not limited to one or more of the following indicators: The required rate, delay value, bit error rate requirement, service interruption probability requirement, and service quality assurance capability information.

In order to be able to select a suitable cell as the serving cell, the terminal can compare the indicators corresponding to the service requirements (such as the rate, delay value or bit error rate required by the service bearer) with the received extended broadcast information. Compare the relative indicators in the capability information of the camping cell and/or the neighboring cells of the camping cell, and synthesize the camping cell and/or the neighboring cells of the camping cell according to the pre-defined and configurable weighting criteria Evaluate, obtain an evaluation value of the camping cell and/or a neighboring cell of the camping cell, and select a cell for sending the first service request according to the evaluation value.

2) Selecting one or more cells whose evaluation value exceeds the first preset value and the measurement result of the reference signal reception strength exceeds the second preset value and/or the measurement result of the reference signal reception quality exceeds the third preset value is the first target cell that sends the first service request.

In order to quickly determine the serving cell, the terminal can simultaneously send multiple messages to multiple services that meet the service requirements (that is, the evaluation value exceeds the first preset value) and the measurement results of the cell's reference signal reception strength and/or reference signal reception quality exceed the preset threshold value The cell (corresponding to the second preset value and the third preset value respectively) sends the first service request. When multiple cells agree to the first service request of the terminal, the terminal may preferentially select the cell with the largest evaluation value as the new serving cell. It should be noted that, the first preset value, the second preset value and the third preset value can be set according to different uplink services.

In order to further understand the criteria for weighting calculation mentioned in the above method, the embodiment of the present invention provides a preferred embodiment for description, as follows:

Use the formula:

Weighted calculation is performed on each capability index of the service requirement corresponding to the first service request and the corresponding capability index in the acquired capability information of the serving cell and/or the neighboring cells of the serving cell.

Among them, m ₁ , m ₂ ... m _i are the weighted values of each capability index, determined according to the sensitivity of the business to each capability index, 0<m ₁ , m ₂ ... m _i <1, and m ₁ +m ₂ +...+m _i =1; A ₁ , A ₂ . . . A _i are the capability index values of the service requirements corresponding to the first service request; B ₁ , B _{2 .} The value of the capability index corresponding to each capability index of the demand.

As shown in the above formula, the evaluation value is the difference between the value of each capability index of the serving cell or the neighboring cells of the serving cell and the value of each capability indicator corresponding to the service requirement, divided by the capability indicator value of the corresponding service requirement. , multiplied by the weighted value of the corresponding capability index, and the sum of the values.

It should be noted that the criterion for weighting calculation mentioned in the embodiment of the present invention is not limited to the above-mentioned method, and the above-mentioned method is only used for further understanding of the criterion for weighting calculation.

Further, in order to reduce the energy consumption overhead of the terminal, the terminal may determine the number of the first target cells according to its own available electricity, and send the first service request. For details, please refer to the description corresponding to this part in Application Scenario 1, which will not be repeated here.

Further, the terminal in the connected state (that is, when the first cell is the serving cell) can directly send the first service request to the first target cell, or

Send a first service request to the current serving cell, where the first service request carries the cell identification information of the first target cell, and is used to assist the serving cell to switch the first service request to the first target cell, wherein, The cell identification information includes one or more of: cell IP address, cell frequency, cell address, physical resource location pre-allocated for successful establishment of service request or paging response, and cell wireless network temporary identification information.

It should be noted that the capability information of the serving cell and the capability information of the neighboring cells of the serving cell can be notified to the terminal in addition to broadcasting, and can also be notified to the terminal through dedicated signaling.

In addition, when there is an uplink service and the terminal is in the connected state, the terminal can directly obtain the reference signal reception strength and/or reference signal reception quality of the serving cell and/or neighboring cells of the serving cell according to the extended broadcast information, service requirements and its own reference signal reception quality. Select an appropriate cell as the new serving cell. In addition, it is also possible to first determine whether the current serving cell meets the service requirements and its own measurement results of the reference signal reception strength and/or reference signal reception quality of the serving cell. If it is satisfied, it is not necessary to find a new serving cell; if not, then An appropriate cell is selected as a new serving cell according to the extended broadcast information, service requirements, and its own measurement results of reference signal reception strength and/or reference signal reception quality of neighboring cells of the serving cell. Furthermore, the current serving cell can also directly switch the terminal to a cell that meets the requirements according to the service requirements and the measurement result of the reference signal by the terminal itself.

Application Scenario Three

When there is a downlink service and the terminal is in a connected state, as shown in Figure 4, the method includes:

Step S401: Receive broadcast information of a serving cell (corresponding to the first cell).

The broadcast information includes: capability information of the serving cell and/or capability information of neighboring cells of the serving cell. The capability information of the serving cell specifically includes: coverage capability of the serving cell, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability for different services, and one or more capability information on load conditions; The capability information of the neighboring cells of the serving cell specifically includes: coverage capability, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability, and one or more capabilities of the neighboring cells of the serving cell. information. The neighboring cells of the serving cell include one or more neighboring cells with the same system and same frequency as the serving cell, neighboring cells with the same system and different frequencies as the serving cell, and one or more neighboring cells with different systems from the serving cell.

S402 , when the terminal arrives with downlink services, select to send a second service request to one or more second target cells that match the service requirements. Wherein, the second target cell is a serving cell and/or a neighboring cell of one or more serving cells.

The above method, by extending the broadcast information, enables the terminal to select a suitable cell to send the first service request according to the service requirements and the capability information of the cell contained in the broadcast information when there is a downlink service. Compared with the prior art, it avoids the need for When the current serving cell cannot meet the service requirements, the signaling overhead and delay increase caused by switching to other suitable cells.

Further, the method S402 specifically includes:

Step C, according to the capability information of the serving cell and/or the capability information of the neighboring cells of the serving cell, the service requirements corresponding to the second service request, and the reference signal reception strength and/or the reference signal received by the terminal itself to the serving cell and/or the neighboring cells of the serving cell. Or referring to the signal reception quality measurement result, select one or more second target cells to send the second service request.

When there is a downlink service, the terminal can select one or more cells (that is, the second target cell) to send the second service request according to the service requirements and the received capability information of the serving cell and/or the neighboring cells of the serving cell. The cell for the service request is a cell that can provide basic service bearers, and the terminal can simultaneously judge whether the cell can meet the service requirements according to its own measurement results of the reference signal reception strength and/or reference signal reception quality of the serving cell and/or the neighboring cells of the serving cell. , such as whether the received strength of the reference signal or the received quality of the reference signal meets the preset threshold. If a certain cell meets the service requirement of the terminal, but because the reference signal received strength or quality of the terminal to the cell is lower than the preset threshold, the sending of the second service request to the cell is abandoned.

Further, step C specifically includes:

1) According to a preconfigured criterion, each capability index of the service requirement corresponding to the second service request is weighted and calculated with the corresponding capability index in the acquired capability information of the serving cell and/or the adjacent cells of the serving cell, Obtain the evaluation value of the serving cell and/or the neighboring cells of the serving cell; wherein, the capability index of the service requirement corresponding to the second service request includes but is not limited to one or more of the following indicators: service requirement level, rate required for service bearer , delay value, bit error rate requirements, service interruption probability requirements, and service quality assurance capability information.

In order to be able to select a suitable cell as the serving cell, the terminal can compare the indicators corresponding to the service requirements (such as the rate, delay value or bit error rate required by the service bearer) with the received extended broadcast information. The relative indicators in the capability information of the serving cell and/or the neighboring cells of the serving cell are compared, and the serving cell and/or the neighboring cells of the serving cell are comprehensively evaluated according to the pre-defined and configurable weighting criteria to obtain the service. The evaluation value of the cell and/or the neighboring cells of the serving cell, and the cell that sends the second service request is selected according to the evaluation value.

2) Select one or more cells whose evaluation value exceeds the first preset value and the measurement result of the reference signal reception strength exceeds the second preset value and/or the reference signal reception quality measurement result exceeds the third preset value as The second target cell that sends the second service request.

In order to quickly determine the serving cell, the terminal can simultaneously send multiple messages to multiple services that meet the service requirements (that is, the evaluation value exceeds the first preset value) and the measurement results of the cell's reference signal reception strength and/or reference signal reception quality exceed the preset threshold value The cell (corresponding to the second preset value and the third preset value respectively) sends the second service request. When multiple cells agree to the second service request of the terminal, the terminal may preferentially select the cell with the largest evaluation value as the new serving cell. It should be noted that, the first preset value, the second preset value and the third preset value can be set according to different downlink services.

In order to further understand the criteria for weighting calculation mentioned in the above method, the embodiment of the present invention provides a preferred embodiment for description, as follows:

Use the formula:

Weighted calculation is performed on each capability index of the service requirement corresponding to the second service request and the corresponding capability index in the acquired capability information of the serving cell and/or the neighboring cells of the serving cell.

Among them, m ₁ , m ₂ ... m _i are the weighted values of each capability index, which is determined according to the sensitivity of the business to some capability indices, 0<m ₁ , m ₂ ... m _i <1, and m ₁ +m ₂ +...+m _i =1; A ₁ , A ₂ . . . A _i are the capability index values of service requirements corresponding to the paging message; B ₁ , B _{2 .} The corresponding ability index value of each ability index.

As shown in the above formula, the evaluation value is the difference between the capability index values of the serving cell and the neighboring cells of the serving cell and the capability index values corresponding to the service requirements, divided by the capability index values of the corresponding service requirements. , multiplied by the weighted value of the corresponding capability index, and the sum of the values.

It should be noted that the criterion for weighting calculation mentioned in the embodiment of the present invention is not limited to the above-mentioned method, and the above-mentioned method is only used for further understanding of the criterion for weighting calculation.

Further, in order to reduce the energy consumption overhead of the terminal, the terminal determines the number of second target cells according to its own available power, and sends a second service request. For details, please refer to the description corresponding to this part in Application Scenario 1, which will not be repeated here.

Further, the terminal in the connected state (that is, when the first cell is the serving cell) can directly send the second service request to the second target cell, or

Sending a second service request to the current serving cell, wherein the second service request carries the cell identification information of the second target cell, and is used to assist the serving cell to switch the second service request to the second target cell, wherein, The cell identification information includes one or more of: cell IP address, cell frequency, cell address, physical resource location pre-allocated for successful establishment of service request or paging response, and cell wireless network temporary identification information.

It should be noted that the capability information of the serving cell and the capability information of the neighboring cells of the serving cell can be notified to the terminal in addition to broadcasting, and can also be notified to the terminal through dedicated signaling.

In addition, when there is a downlink service and the terminal is in a connected state, the terminal can directly measure the reference signal reception strength and/or reference signal reception quality of the serving cell and neighboring cells of the serving cell according to the extended broadcast information, service requirements, and its own measurement of the reference signal reception quality. As a result, an appropriate cell is selected as the new serving cell. In addition, it is also possible to first judge whether the serving cell meets the service requirements and its own measurement results of the reference signal reception strength and/or reference signal reception quality of the serving cell. If it is satisfied, it is not necessary to search for a new serving cell; An appropriate cell is selected as a new serving cell based on the extended broadcast information, service requirements, and measurement results of reference signal reception strength and/or reference signal reception quality of neighboring cells of the own serving cell. Furthermore, the current serving cell can also directly switch the terminal to a cell that meets the requirements according to the service requirements and the measurement result of the reference signal by the terminal itself.

Application Scenario Four

When there is an uplink service and the terminal is idle, as shown in Figure 5, the method includes:

S501. Receive a paging message and broadcast information from a network side; the paging message includes: service requirement level, service bearer rate, delay value, bit error rate requirement, service interruption probability requirement, and service quality assurance One or more kinds of capability information; the broadcast information includes: capability information of the camping cell (corresponding to the first cell) and/or capability information of neighboring cells of the camping cell.

S502. When the terminal has downlink services, select one or more second target cells that match the service requirements according to the broadcast information and the paging message to send a paging response.

The capability information of the residing cell specifically includes: coverage capability, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability for different services, and one or more capabilities of load conditions of the residing cell information;

The capability information of the neighboring cells of the residing cell specifically includes: one or more of the coverage capability, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability, and load capability of the neighboring cells of the residing cell. capability information;

Wherein, the neighboring cells of the residing cell include: neighboring cells of the same system and same frequency as the residing cell, neighboring cells of the same system and different frequencies as the residing cell, and one or more neighboring cells of different systems from the residing cell. indivual.

It should be noted that "receiving broadcast information and paging messages from the network side" in step S501 does not mean that the terminal needs to receive both broadcast information and paging messages at the receiving time, but to indicate that there is a downlink service and the terminal is idle. In the state, the terminal needs to select a cell that meets the service requirements according to both the paging message and the broadcast information.

In the above method, by extending the paging message and broadcast information, when the terminal has downlink services, it can select a suitable cell to send paging according to information such as service requirements in the paging message and the capability information of the cell contained in the broadcast information. The response, and the non-camping cell is the service originating cell. Compared with the prior art, the problems such as increased signaling overhead and delay caused by switching to other suitable cells when the camped cell cannot meet the service requirements are avoided.

Further, the step S502 specifically includes:

Step D, according to the paging message and in combination with the capability information of the camping cell and/or the capability information of the neighboring cells of the camping cell in the system broadcast information of the camping cell, and the information on the ability of the terminal to the camping cell. And/or the measurement result of the reference signal reception strength and/or the reference signal reception quality of the neighboring cells of the camping cell, select one or more second target cells to send a paging response.

When there is a downlink service, the terminal can select one or more cells (that is, the second target cell) to send the second service request according to the service requirements and the received capability information of the serving cell and/or the neighboring cells of the serving cell. The cell to which the terminal sends the second service request is a cell that can provide basic service bearers. Whether the cell can meet the service requirements, such as whether the received reference signal strength or the received quality of the reference signal meets a preset threshold. If a certain cell meets the service requirements of the terminal, but because the terminal's received strength or quality of the reference signal for the cell is lower than the preset threshold, the sending of the paging response to the cell is abandoned.

Further, step D specifically includes:

1) According to the pre-configured criteria, carry out each capability index of the service requirement corresponding to the paging message and the corresponding capability index in the acquired capability information of the camping cell and/or the capability information of the neighboring cells of the camping cell; Weighted calculation to obtain the evaluation value of the residing cell and/or the neighboring cell of the residing cell, wherein the capability index of the service requirement corresponding to the paging message includes but is not limited to one or more of the following indicators: service requirement level, service bearer Required rate, delay value, bit error rate requirement, service interruption probability requirement, and service quality assurance capability information;

In order to be able to select a suitable cell as the serving cell, the terminal can compare the indicators corresponding to the service requirements contained in the paging message (such as the rate, delay value or bit error rate required for the service bearer) with the received data. Compare the relative indicators in the capability information of the camped cell and/or the neighboring cells of the camped cell in the extended broadcast information, and compare the camped cell and/or the camped cell and/or the camped cell according to the pre-defined and configurable weighting criteria. The neighboring cells of the cell perform comprehensive evaluation to obtain the evaluation value of the camping cell and/or the neighboring cells of the camping cell, and select the cell to send the paging response according to the evaluation value.

2) Select one or more cells whose evaluation value exceeds the first preset value and the measurement result of the reference signal reception strength exceeds the second preset value and/or the reference signal reception quality measurement result exceeds the third preset value as The second target cell that sends the paging response.

In order to quickly determine the serving cell, the terminal can simultaneously send multiple messages to multiple services that meet the service requirements (that is, the evaluation value exceeds the first preset value) and the measurement results of the cell's reference signal reception strength and/or reference signal reception quality exceed the preset threshold value The cell (corresponding to the second preset value and the third preset value respectively) sends a paging response. When multiple cells agree to the terminal's paging response, the terminal can preferentially select the cell with the largest evaluation value as the serving cell, thereby informing the core network terminal to respond to downlink services on the network side through the serving cell. It should be noted that, the first preset value, the second preset value and the third preset value can be set according to different downlink services.

In order to further understand the criteria for weighting calculation mentioned in the above method, the embodiment of the present invention provides a preferred embodiment for description, as follows:

Use the formula:

A weighted calculation is performed on each capability index of the service requirement corresponding to the paging message and the acquired capability information of the camping cell and/or the corresponding capability index in the capability information of the neighboring cells of the camping cell.

Among them, m ₁ , m ₂ ... m _i are the weighted values of each capability index, which is determined according to the sensitivity of the business to some capability indices, 0<m ₁ , m ₂ ... m _i <1, and m ₁ +m ₂ +...+m _i =1; A ₁ , A ₂ . . . A _i are the capability index values of the service requirements corresponding to the paging message; B ₁ , B _{2 .} The capability index value corresponding to each capability index value of the business requirement.

As shown in the above formula, the evaluation value is the difference between the respective capability index values of the camping cell and the neighboring cells of the camping cell and the respective capability index values corresponding to the service requirements, divided by the capabilities of the corresponding business requirements. The index value, multiplied by the weighted value of the corresponding capability index, is the sum of the values.

It should be noted that the criterion for weighting calculation mentioned in the embodiment of the present invention is not limited to the above-mentioned method, and the above-mentioned method is only used for further understanding of the criterion for weighting calculation.

Wherein, when the terminal sends a paging response to the selected second target cell, if the selected second target cell is not in the paging area TA of the terminal, a TA update process needs to be initiated.

Further, in order to reduce the energy consumption overhead of the terminal, the terminal may determine the number of the second target cells according to its own available power, and send a paging response. For details, please refer to the description corresponding to this part in Application Scenario 1, which will not be repeated here.

Further, the terminal in the idle state (that is, when the first cell is the camping cell) can directly send a paging response to the second target cell, or

A paging response is sent to the camping cell, wherein the paging response carries the cell identification information of the second target cell, which is used to assist the camping cell to redirect the paging response to the second target cell. Wherein, the cell identification information includes: one or more of cell IP address, cell frequency, cell address, physical resource location pre-allocated for successful establishment of service request or paging response, and cell wireless network temporary identification information information.

It should be noted that when there is a downlink service and the terminal is in an idle state, the terminal can first determine whether the camped cell meets the service requirements and its own measurement results of the reference signal reception strength and/or reference signal reception quality of the camped cell. If satisfied, a service connection can be established directly with the residing cell, and the residing cell is used as the serving cell; Or select an appropriate cell as the serving cell with reference to the measurement result of the received signal quality. In addition, the terminal may not directly judge whether the camping cell can be used as a serving cell, but directly pass the reference signal based on the extended broadcast information, paging message and its own reference signal to the camping cell and/or the neighboring cells of the camping cell. An appropriate cell is selected as the serving cell based on the measurement result of the reception strength and/or the reference signal reception quality.

According to another aspect of the embodiments of the present invention, an apparatus for cell selection is provided, which is applied to the terminal side. As shown in FIG. 6 , the apparatus includes:

A receiving module 601, configured to receive broadcast information and/or paging messages; the broadcast information includes: capability information of the first cell and/or capability information of neighboring cells of the first cell; the paging message includes: service requirement level , one or more of the rate, delay value, bit error rate requirement, service interruption probability requirement, and service quality assurance capability information required for service bearer; wherein, the first cell is a camping cell or a serving cell ;

The selection module 601 is used for the terminal to select one or more target cells to send a service request or a paging response according to the broadcast information and/or the paging message when there is an uplink or downlink service.

Further, the capability information of the first cell specifically includes: one or one of the coverage capability, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability of different services, and load conditions of the first cell. Various ability information.

The capability information of the neighboring cells of the first cell specifically includes: one or more of the coverage capability, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability, and load capability of the neighboring cells of the first cell. capability information.

The neighboring cells of the first cell include one or more neighboring cells with the same system and same frequency as the first cell, neighboring cells with the same system and different frequencies with the first cell, and one or more neighboring cells with different systems from the first cell.

Further, the selection module is specifically configured to be based on the capability information of the first cell and/or the capability information of the neighboring cells of the first cell, the service requirements corresponding to the service request, and the terminal's own preference for the first cell and/or the first cell. Based on the measurement result of the reference signal reception strength and/or the reference signal reception quality of the neighboring cells, one or more target cells are selected to send the service request.

Further, the selection module is specifically configured to combine the capability information of the corresponding first cell and/or the capability information of the neighboring cells of the first cell, and the terminal itself according to the paging message in the broadcast information. Selecting one or more target cells to send a paging response based on the measurement results of the reference signal reception strength and/or the reference signal reception quality of the first cell and/or the neighboring cells of the first cell.

Further, the selection module includes:

The acquiring unit is configured to, according to the preconfigured criterion, compare each capability index of the service requirement corresponding to the service request or the paging message with the capability information of the first cell and/or the capability information of the neighboring cells of the first cell. The corresponding capability index is weighted and calculated to obtain the evaluation values of the first cell and the neighboring cells of the first cell.

Wherein, the capability index of the service requirement corresponding to the service request includes, but is not limited to, one or more of the following indicators: service requirement level, rate required for service bearer, delay value, bit error rate requirement, service interruption probability requirement and service quality assurance capability information.

A first selection unit, configured to set one of the evaluation value exceeding a first preset value and the measurement result of the received strength of the reference signal exceeding a second preset value and/or the measurement result of the receiving quality of the reference signal exceeding a third preset value Cell or cells are selected as target cells for sending service requests or paging responses.

Further, the selection unit is specifically used for:

Use the formula:

A weighted calculation is performed on each capability index of the service requirement corresponding to the service request or the paging message and the capability information of the first cell and/or the capability information of the neighboring cells of the first cell.

Among them, m ₁ , m ₂ ... m _i are the weighted values of each capability index, determined according to the sensitivity of the business to each capability index, 0<m ₁ , m ₂ ... m _i <1, and m ₁ +m ₂ +...+m _i =1; A ₁ , A ₂ ... A _i are the capability index values of the service requirements corresponding to the first service request; B ₁ , B ₂ ... B _i are the first cell or the neighboring cells of the first cell Capability index value corresponding to each capability index of business requirement.

The evaluation value is the difference between the value of each capability index of the first cell or the neighboring cells of the first cell and the value of each capability indicator corresponding to the service requirement, divided by the capability indicator value of the corresponding service requirement, and then multiplied by the difference. The summation of the values after the weighted values of the corresponding capability indicators.

Further, when the first cell is a serving cell, the apparatus further includes:

The first sending module is used for directly sending a service request to the target cell; or sending a service request to the first cell, the service request carrying the cell identification information of the target cell, and assisting the first cell to switch the service request to the target cell.

Wherein, the cell identification information includes: one or more of cell IP address, cell frequency, cell address, physical resource location pre-allocated for successful establishment of service request or paging response, and cell wireless network temporary identification information information.

It should be noted that the device is a device corresponding to the above-mentioned method for cell selection on the terminal side, and all implementations in the above-mentioned method embodiments are applicable to the embodiments of the device, and the same technical effect can also be achieved.

Embodiment 2

According to another aspect of the embodiments of the present invention, a method for cell selection is provided, which is applied to the network device side. First of all, it should be noted that, in this embodiment of the present invention, the network device may be the first cell (residence). The base station corresponding to the cell or serving cell) may also be the base station corresponding to the target cell (the first target cell or the second target cell) selected by the terminal to send the service request.

As shown in Figure 7, the method includes:

S701. Send broadcast information and/or paging message. The broadcast information and/or the paging message are used to enable the terminal to choose to send a service request or a paging response to one or more target cells matching the service requirements when there is an uplink or downlink service.

Wherein, the broadcast information includes: capability information of the first cell and/or capability information of neighboring cells of the first cell; the paging message includes: service requirement level, rate required for service bearer, delay value, bit error One or more of rate requirements, service interruption probability requirements, and service quality assurance capability information.

Wherein, the service request or paging response includes: service requirement level, service bearer required rate, delay value, bit error rate requirement, service interruption probability requirement, and one or more of service quality assurance capability information. various information.

Further, the capability information of the first cell specifically includes: one or more of the coverage capability, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability of different services, and load conditions of the cell. capability information.

The capability information of the neighbor cells of the first cell specifically includes: coverage capability, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability, and load capability of the neighbor cells of the residing cell. capability information.

Wherein, the neighboring cells of the first cell include: neighboring cells with the same system and same frequency as the first cell, neighboring cells with the same system and different frequencies as the first cell, and one or more neighboring cells with different systems from the first cell. indivual.

In the first embodiment, the terminal side has been tested when there is an uplink service and the terminal is in an idle state, when there is an uplink service and the terminal is connected, when there is a downlink service and the terminal is connected, and when there is a downlink service and the terminal is in an idle state Four application scenarios are described in this example, and in this embodiment, the network side mainly describes the fourth application scenario, because when there is an uplink service and the terminal is in an idle state, and when there is an uplink service and the terminal is in a connected state These two application scenarios can be attributed to one application scenario description. When there is downlink service and the terminal is connected, and when there is downlink service and the terminal is in idle state, these two application scenarios can be attributed to one application scenario description. Therefore, in the This embodiment is described in two application scenarios.

Application Scenario One

When there is uplink traffic, the methods include:

Step E: Send broadcast information, so that when there is an uplink service request, the terminal can select to send the first service request to one or more first target cells matching the service requirement according to the broadcast information.

The broadcast information includes: the capability information of the first cell (the currently camping cell when the terminal is in an idle state or the current serving cell when the terminal is in a connected state) and/or the neighboring cells of the first cell. The capability information of the first cell specifically includes: coverage capability, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability for different services, and one or more capabilities of the load condition of the first cell information; the capability information of the adjacent cells of the first cell specifically includes: one of the coverage capability, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability and load capability of the adjacent cells of the first cell or multiple capability information. Wherein, the neighboring cells of the first cell include: neighboring cells with the same system and same frequency as the first cell, neighboring cells with the same system and different frequencies as the first cell, and one or more neighboring cells with different systems from the first cell. indivual.

In the embodiment of the present invention, the capability information of the first cell and the capability information of the neighboring cells of the first cell are used to assist the terminal to select to send the first target cell to one or more first target cells that match the service requirements when there is an uplink service. A service request, wherein the first service request includes one of: service demand level, service bearer required rate, delay value, bit error rate requirement, service interruption probability requirement, and service quality assurance capability information or various information. Wherein, the first target cell is the first cell and/or one or more neighboring cells of the first cell.

How the terminal selects the first target cell to send the first service request according to the capability information of the first cell and the capability information of neighboring cells of the first cell has been described in detail in the foregoing method description, and will not be repeated here. In this embodiment, the processing method when a cell cannot bear the first service request of the terminal is mainly described, as follows:

When the one or more first target cells cannot bear the first service request of the terminal, the first target cell sends a service request rejection message to the terminal, so that the terminal re-determines the third target cell (ie, a new target cell) that sends the first service request. target cell). The service request rejection message includes cell identification information of one or more cells that recommend the terminal to resend the first service request, wherein the cell identification information includes: cell IP address, cell frequency, cell address, and service One or more kinds of information among the pre-allocated physical resource location and the cell wireless network temporary identification information are requested to be established successfully.

When one or more first target cells cannot carry the terminal's first service request, in order to ensure the user experience to the greatest extent, the first target cell that cannot carry the terminal's service request can carry the recommendation terminal in the service request rejection information to re-send the first target cell. Cell identification information of one or more cells requested by a service. The terminal reselects the target cell (ie, the third target cell) according to the cell identification information contained in the service request rejection message to send the first service request.

Further, when the first target cell cannot carry the first service request of the terminal, the first target cell feeds back the cell identification information of the cell that can carry the first service request to the network side, wherein the cell identification information It includes one or more kinds of information among cell IP address, cell frequency, cell address, physical resource location pre-allocated for successful establishment of service request, and temporary identification information of cell wireless network.

When the first target cell cannot bear the first service request of the terminal, the second target cell can feed back the cell identification information of the cell that can bear the first service request of the terminal to the core network, and the core network determines the serving cell of the terminal, The core network and the terminal directly exchange information through the serving cell determined by the core network, and at the same time, the first target cell sends the cell identification information of the cell that can carry the terminal's first service request to the terminal, so that the terminal can monitor the scheduling information of these cells at any time. .

Among them, there may be various situations that prevent the first target cell from carrying the service request of the terminal:

(1) Since the capability information of the cell acquired by the terminal is for all users in the whole cell, the capability acquired at the cell level can meet the service request of the terminal, but since the cell needs to serve multiple terminals at the same time, in order to ensure that other terminals can serve, In the case of rejecting the service request of a single terminal.

(2) Since the load of the target cell changes greatly between the time when the terminal receives the broadcast information and the time when the terminal service request is sent, the target cell cannot satisfy the service request of the terminal when the terminal sends the service request.

It should be noted that when one or more of the first target cells have a cell that agrees with the first service request of the terminal, the cell will send a service request acceptance message to the terminal, and the terminal can select the evaluation value from the agreed first target cell. The highest cell is used as the cell that sends the service request, and at the same time, if there is a first target cell that cannot bear the first service request of the terminal, the cell identifier of one or more cells carrying the first service request that the terminal is recommended to resend is sent to the terminal. When the information is received, the terminal can send a service request revocation message to the cell, thereby rejecting the cell.

In the embodiment of the present invention, when the first target cell cannot bear the first service request of the terminal, in addition to the above-mentioned method for the terminal to reselect the third target cell for sending the first service request through the cell identification information in the service request rejection message In addition, the first target cell that cannot carry the terminal service request can redirect the terminal in the idle state to the third target cell that can carry the first service request or switch the terminal in the connected state to the terminal that can carry the first service request. The third target cell.

One or more first target cells that cannot bear the first service request of the terminal can exchange information with neighboring cells of the first target cell through the inter-base station interface, and find and determine the third target cell that can satisfy the first service request of the terminal. target cell.

The first target cell that cannot carry the terminal service request can exchange information with neighboring cells through the inter-base station interface (such as the X2 interface, the transmission delay of the X2 interface is much lower than the period of broadcast information update, which is more real-time). The cell that satisfies the terminal service request bearer, and provides the required information and resources for the terminal to quickly initiate a service request in this cell, such as the physical resource location required for the terminal to initiate a service request, the coding method or random sequence used, C- RNTI (Cell Radio Network Temporary Identification Information) and so on.

Further, the one or more first target cells that cannot bear the first service request of the terminal can exchange information with neighboring cells of the first target cell through the inter-base station interface, specifically:

1) The first target cell that cannot bear the first service request of the terminal sends the service requirement information in the first service request of the terminal to the adjacent cell of the first target cell through the inter-base station interface, so that the adjacent cell of the first target cell According to the comparison between the service requirement information in the first service request and its own capability, it is judged whether the first service request can be carried; if it can be carried, a confirmation feedback is sent to the first target cell, otherwise a rejection feedback is sent.

Wherein, the service requirement information in the first service request includes: service requirement level, rate required for service bearing, delay value, bit error rate requirement, service interruption probability requirement, and one of service quality assurance capability information or various information.

2) When the first target cell that cannot bear the first service request of the terminal receives confirmation feedback from multiple neighboring cells, one or more cells are selected as the third target cell.

In order to further understand the process of communication between the first target cell that cannot carry the first service request of the terminal and the neighboring cell through the inter-base station interface (here, the X2 interface is taken as an example), an example is given below, as shown in Figure 7:

S801. The cell that cannot bear the service request of the terminal sends a message to the adjacent cell through the X2 interface whether the service request of the terminal can be redirected to the adjacent cell, or whether the adjacent cell can satisfy the service request initiated by the terminal on the adjacent cell.

S802: After receiving the request information of the cell that cannot bear the service request of the terminal, the neighboring cell determines whether the service request of the terminal can be satisfied.

S803. The neighboring cell sends a redirection request or service request feedback information to the cell that cannot bear the terminal service request, including sending a request confirmation message to the cell that cannot bear the terminal service request if the neighboring cell can meet the requirements, otherwise sending a service request rejection message.

S804. The cell that cannot bear the service request of the terminal receives the request feedback information of multiple neighboring cells,

S805. After the cell that cannot bear the service request of the terminal obtains one or more adjacent cells that can accept the redirection request or can satisfy the service request of the terminal, send the resource request information to assist the terminal to redirect or quickly initiate the service request to the adjacent cells, such as the terminal Physical resource location, used access sequence, C-RNTI, etc. required for initiating a service request.

S806. The cell that cannot bear the service request of the terminal redirects the terminal to one or more adjacent cells that can accept the redirection request, or informs the information of one or more adjacent cells that can satisfy the service request of the terminal in the service request rejection information terminal.

To sum up, when there is a cell that cannot carry the terminal's first service request, the terminal can select a new target cell to re-send the first service request according to the service request rejection message sent by the cell that cannot carry the terminal's first service request, or The cell that cannot bear the first service request of the terminal redirects or switches the terminal to a cell that meets the service requirement by exchanging information with neighboring cells.

Application Scenario 2

When there is downlink traffic, the methods include:

Step F: Send broadcast information and paging message or only send broadcast information (when the terminal is in an idle state, send the broadcast information and paging message; when the terminal is in a connected state, only send the broadcast message).

The broadcast information includes: the capability information of the first cell (the currently camping cell when the terminal is in an idle state or the current serving cell when the terminal is in a connected state) and/or the neighboring cells of the first cell. The capability information of the first cell specifically includes: coverage capability of the cell, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability for different services, and one or more capability information on load conditions ; The capability information of the neighboring cells of the first cell specifically includes: one or one of the coverage capability, service bearing capability, cell throughput, edge rate, mobility support capability, service quality assurance capability, and load capability of the neighboring cells of the first cell. Various ability information. The neighboring cells of the first cell include one or more neighboring cells with the same system and same frequency as the first cell, neighboring cells with the same system and different frequencies with the first cell, and one or more neighboring cells with different systems from the first cell. The paging message includes one or more of: service requirement level, service bearer required rate, delay value, bit error rate requirement, service interruption probability requirement, and service quality assurance capability information.

In this embodiment of the present invention, the paging message, the capability information of the first cell, and the capabilities of the neighboring cells of the first cell are used to assist the terminal to select one or more second cells that match service requirements when a downlink service arrives. The target cell sends a second service request or a paging response (when the terminal is in a connected state, it sends a second service request to the second target cell, and when the terminal is in an idle state, it sends a paging response to the second target cell), wherein, The second service request or paging response includes one or more kinds of information among the rate, delay value, bit error rate requirement, service interruption probability requirement, and service quality assurance capability information required for the service bearer. Wherein, the second target cell is the first cell and/or one or more neighboring cells of the first cell.

It should be noted that "receiving broadcast information and paging messages from the network side" in step F does not mean that the network device needs to send both broadcast information and paging messages at the sending time, but to indicate that there is a downlink service and the terminal is idle. In the state, the terminal needs to select a cell that meets the service requirements according to both the received paging message and the broadcast information.

How the terminal selects the second target cell to send the second service request or paging response according to the capability information of the cell and the capability information of the neighboring cells of the cell has been described in detail in the foregoing method description, and will not be repeated here. In this embodiment, the processing method when a cell cannot bear the second service request or paging response of the terminal is mainly described, as follows:

When the one or more second target cells cannot carry the second service request or paging response of the terminal, the second target cell sends a service request or paging response rejection message to the terminal, so that the terminal can re-determine to send the second service request or the fourth target cell (and the new target cell) of the paging response. The service request or paging response rejection message includes cell identification information of one or more cells that recommend the terminal to resend the second service request or paging response, wherein the cell identification information includes: cell IP address, One or more kinds of information among the cell frequency point, the cell address, the pre-allocated physical resource location for the successful establishment of the service request or the paging response, and the temporary identification information of the cell wireless network.

When one or more second target cells cannot carry the second service request or paging response of the terminal, in order to ensure the user experience to the greatest extent, the second target cells that cannot carry the second service request or paging response of the terminal can The request or paging response rejection information carries cell identification information of one or more cells that recommend the terminal to resend the second service request or paging response. The terminal reselects the target cell (ie, the fourth target cell) according to the cell identification information contained in the service request or paging response rejection message to send the service request or paging response.

When the second target cell cannot carry the second service request or the paging response of the terminal, the second target cell feeds back the cell identification information of the cell that can carry the second service request or the paging response to the network side. Wherein, the cell identification information includes: one or more of cell IP address, cell frequency, cell address, physical resource location pre-allocated for successful establishment of service request or paging response, and cell wireless network temporary identification information information.

When the second target cell cannot carry the second service request or paging response of the terminal, the second target cell can feed back the cell identification information of the cell that can carry the second service request or paging response of the terminal to the core network, and the The core network determines the serving cell of the terminal, so that the core network and the terminal directly exchange information through the serving cell determined by the core network. At the same time, the second target cell sends the cell identification information of the cell that can carry the terminal's second service request or paging response. To the terminal, the terminal can monitor the scheduling information of these cells at any time.

Among them, there may be various situations that prevent the second target cell from carrying the second service request or paging response of the terminal:

(1) Since the capability information of the cell acquired by the terminal is for all users in the whole cell, the capability acquired at the cell level can meet the service request of the terminal, but since the cell needs to serve multiple terminals at the same time, in order to ensure that other terminals can serve, In the case of rejecting the service request of a single terminal.

(2) Since the load of the target cell changes greatly from the moment the terminal receives the broadcast information to the moment when the terminal service request is initiated, the target cell cannot satisfy the terminal service request when the terminal initiates the service request.

It should be noted that when one or more of the second target cells have a cell that agrees with the terminal's second service request or paging response, the cell will send a service request or paging response acceptance message to the terminal, and the terminal can start from the approved terminal. Among the second target cells, a cell with the highest evaluation value is selected as the cell for sending the second service request or paging response, and at the same time, if there is a second target cell that cannot carry the second service request or paging response of the terminal When there is cell identification information of one or more cells that recommends the terminal to resend the second service request or paging response, the terminal may send a service request or paging response revocation message to the cell, thereby rejecting the cell.

In this embodiment of the present invention, when the second target cell cannot carry the second service request or paging response of the terminal, the terminal reselects and sends the second service request or paging response rejection message through the cell identification information in the service request or paging response In addition to the method for the second target cell of the service request or paging response, the second target cell that cannot carry the service request of the terminal can redirect the terminal in the idle state to the fourth target that can carry the second service request or paging response The cell or the terminal in the connected state is handed over to the fourth target cell that can carry the second service request.

One or more second target cells that cannot carry the second service request or paging response of the terminal can exchange information with the neighboring cells of the second target cell through the inter-base station interface, and find and determine that the second service request of the terminal can be satisfied. or the fourth target cell of the paging response.

The second target cell that cannot carry the second service request or paging response of the terminal can communicate with neighboring cells through the inter-base station interface (such as the X2 interface, the transmission delay of the X2 interface is much lower than the period of broadcast information update, which is more real-time). Interaction, find and determine the cell that can satisfy the second service request of the terminal or the bearer of the paging response, and provide the required information and resources for the terminal to quickly initiate a service request in this cell, such as the physical resource location required for the terminal to initiate a service request , the used coding method or random sequence, C-RNTI (Cell Radio Network Temporary Identification Information), etc.

Further, the one or more second target cells that cannot bear the second service request or paging response of the terminal can exchange information with neighboring cells of the second target cell through the inter-base station interface, specifically:

1) The second target cell that cannot carry the second service request of the terminal or the paging response sends the service demand information in the second service request of the terminal or the paging response to the neighboring cells of the second target cell through the inter-base station interface, so that the The neighbor cell of the second target cell compares the service requirement information in the second service request or paging response with its own capability, determines whether it can carry the second service request or paging response, and sends an acknowledgement to the second target cell if it can carry the second service request or paging response. feedback, otherwise send rejection feedback.

Wherein, the service requirement information in the second service request or paging response includes: service requirement level, service bearer required rate, delay value, bit error rate requirement, service interruption probability requirement, and service quality assurance capability information one or more of the information.

2) When the second target cell that cannot carry the terminal's second service request or paging response receives confirmation feedback from multiple neighboring cells, one or more cells are selected as the fourth target cell.

To further understand the processing flow when a cell cannot carry the second service request or paging response of the terminal, reference may be made to the exemplary descriptions of S801 to S806 in the previous method embodiment, which will not be repeated here.

To sum up, when there is a cell that cannot carry the terminal's second service request or paging response, the terminal can select a new one according to the service request or paging response rejection message sent by the cell that cannot carry the terminal's second service request or paging response. The target cell resends the second service request or paging response, or the cell that cannot carry the terminal's second service request or paging response exchanges information with neighboring cells to switch the terminal to a cell that meets the service requirements.

According to another aspect of the embodiments of the present invention, an apparatus for cell selection is provided, which is applied to the network device side. First of all, it should be noted that, in the embodiments of the present invention, the network device may be the first cell (residence). cell or the base station corresponding to the current serving cell of the terminal), or it may be the base station corresponding to the target cell (the first target cell or the second target cell) selected by the terminal to send the service request.

As shown in Figure 9, the device includes:

The second sending module 901 is configured to send broadcast information and/or paging messages.

Wherein, the broadcast information includes: capability information of the first cell and/or capability information of neighboring cells of the first cell, and the paging message includes: service requirement level, rate required for service bearer, delay value, bit error One or more of rate requirements, service interruption probability requirements, and service quality assurance capability information. Wherein, the service request includes one or more information among the rate, delay value, bit error rate requirement, service interruption probability requirement, and service quality assurance capability information required for the service bearer.

Further, the broadcast information and/or the paging message are used to assist the terminal in selecting to send a service request or paging response to one or more target cells that match the service requirements when there is an uplink or downlink service (when the terminal is in a connected state. , send a service request; when the terminal is in an idle state, send a paging response). The service request or paging response includes one or more information among the rate, delay value, bit error rate requirement, service interruption probability requirement, and service quality assurance capability information required for the service bearer.

Further, the device also includes:

The third sending module, when the one or more target cells cannot carry the service request or paging response of the terminal, the target cell sends a service request or paging response rejection message to the terminal, so that the terminal re-determines to send the service request or paging response The new target cell for the call response.

The service request or paging response rejection message includes cell identification information of one or more cells that recommend the terminal to resend the service request or paging response, wherein the cell identification information includes: cell IP address, cell frequency point , a cell address, a pre-allocated physical resource location for successful establishment of a service request or a paging response, and one or more information of the cell wireless network temporary identification information.

Further, the device also includes:

A redirection/handover module, configured to cause the target cell to redirect the terminal in an idle state to a new target that can carry a service request or a paging response when the target cell cannot carry the service request or paging response of the terminal cell; or handover the terminal in the connected state to a new target cell that can bear the service request.

Further, the device also includes:

A feedback module, configured to feed back the cell identification information of the new target cell that can carry the service request or paging response to the network side when the target cell cannot carry the service request or paging response of the terminal, wherein the The cell identification information includes one or more of: cell IP address, cell frequency, cell address, physical resource location pre-allocated for successful establishment of service request or paging response, and cell wireless network temporary identification information.

Further, the device also includes:

The information exchange module is used to make one or more target cells that cannot carry the terminal's service request or paging response to exchange information with the adjacent cells of the target cell through the inter-base station interface, find and determine whether the terminal's service request or The new target cell for the paging response.

Further, the information interaction module includes:

The information exchange unit is used to make the target cell that cannot carry the terminal service request or paging response send the service demand information in the terminal service request or paging response to the neighboring cells of the target cell through the inter-base station interface, so that the target cell can The neighboring cell compares the service requirement information in the service request or paging response with its own capability, determines whether it can carry the service request or paging response, and sends confirmation feedback to the target cell if it can, otherwise sends rejection feedback.

Wherein, the service requirement information in the service request or paging response includes: service requirement level, rate required for service bearer, delay value, bit error rate requirement, service interruption probability requirement, and service quality assurance capability information. one or more types of information.

The second selection unit is configured to select one or more cells as a new target cell when the target cell that cannot bear the service request or paging response of the terminal receives confirmation feedback from multiple neighboring cells.

It should be noted that this device is a device corresponding to the method for cell selection in the above third embodiment, and all implementations in the above method embodiments are applicable to the embodiments of the device, and the same technical effect can also be achieved.

The above are the preferred embodiments of the present invention, and it should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications are also included in the present invention. within the scope of protection of the invention.

Claims (25)

1. A method for cell selection, applied to a terminal side, includes:

receiving broadcast information from a network side, wherein the broadcast information comprises capability information of a first cell and/or capability information of a neighboring cell of the first cell, and the first cell is a resident cell or a serving cell;

when there is uplink service, according to the broadcast information, selecting to send service request to one or more target cells matching service requirement, including: selecting one or more target cells to send service requests according to the capability information of the first cell and/or the capability information of the adjacent cells of the first cell, the service requirements corresponding to the service requests and the measurement results of the reference signal receiving strength and/or the reference signal receiving quality of the first cell and/or the adjacent cells of the first cell by the terminal;

when there is downlink service, according to the broadcast information, selecting to send service request or paging response to one or more target cells matching service requirement, including: according to a preset criterion, carrying out weighted calculation on each capability index of the service requirement corresponding to the service request and the corresponding capability index in the capability information of the first cell and/or the capability information of the adjacent cell of the first cell to obtain an evaluation value of the first cell and/or the adjacent cell of the first cell; the capability index of the service requirement corresponding to the service request comprises: one or more of service requirement grade, rate required by service bearing, time delay value, error rate requirement, service interruption probability requirement and service quality guarantee capability information; selecting one or more cells of which the evaluation value exceeds a first preset value and the measurement result of the reference signal receiving strength exceeds a second preset value and/or the measurement result of the reference signal receiving quality exceeds a third preset value as a target cell for sending a service request or a paging response;

the capability information of the first cell specifically includes: one or more kinds of capability information of the coverage capability, service bearing capability, cell throughput, edge rate, capability of supporting mobility, capability of guaranteeing different service quality and load condition of the first cell;

the capability information of the neighboring cell of the first cell specifically includes: one or more kinds of capability information of coverage capability, service carrying capability, cell throughput, edge rate, mobility supporting capability, service quality guaranteeing capability and load capability of a first cell neighbor cell;

wherein the first cell neighbor cell includes: one or more of neighboring cells which are in the same system and same frequency as the first cell, neighboring cells which are in the same system and different frequency as the first cell and neighboring cells which are in different systems from the first cell.

2. The method according to claim 1, wherein each capability index of the service requirement corresponding to the service request is weighted with a corresponding capability index in the capability information of the first cell and/or the capability information of the neighboring cell of the first cell, specifically:

using the formula:

carrying out weighted calculation on each capability index of the service requirement corresponding to the service request and the corresponding capability index in the capability information of the first cell and/or the capability information of the adjacent cell of the first cell;

wherein m is₁、m₂…m_iIs the weighted value of each capability index, determined according to the sensitivity of the service to each capability index, 0<m₁、m₂…m_i<1, and m₁+m₂+…+m_i＝1；A₁、A₂…A_iEach capability index value of the service requirement corresponding to the service request; b is₁、B₂…B_iThe capacity index value corresponding to each capacity index of the first cell or the adjacent cell of the first cell and the service demand;

the evaluation value is the sum of the numerical values obtained by dividing the difference between each capability index value of the first cell or the adjacent cell of the first cell and each capability index value corresponding to the service requirement by the capability index value of the corresponding service requirement and multiplying the result by the weighted value of the corresponding capability index.

3. The method according to claim 1, wherein the selecting to send the service request or the paging response to the one or more target cells matching the service requirement is specifically:

directly sending a service request or a paging response to the target cell; or

Sending a service request or a paging response to the first cell, where the service request or the paging response carries cell identification information of the target cell, and is used to assist the first cell in switching or redirecting the service request or the paging response to the target cell, where the cell identification information includes: one or more of a cell IP address, a cell frequency point, a cell address, a physical resource position pre-allocated for successfully establishing a service request or a paging response and cell wireless network temporary identification information.

4. A method for cell selection is applied to a network device side, and is characterized by comprising the following steps:

sending broadcast information; the broadcast information includes: capability information of the first cell and/or capability information of neighboring cells of the first cell;

when the terminal has uplink service, the terminal selects to send a service request to one or more target cells matched with the service requirement according to the broadcast information, wherein the terminal selects one or more target cells to send the service request according to the capability information of the first cell and/or the capability information of the adjacent cell of the first cell, the service requirement corresponding to the service request, and the measurement result of the reference signal receiving strength and/or the reference signal receiving quality of the terminal to the first cell and/or the adjacent cell of the first cell;

when the terminal has downlink service, the terminal selects to send a service request or a paging response to one or more target cells matched with the service requirement according to the broadcast information, wherein the terminal performs weighted calculation on each capability index of the service requirement corresponding to the service request and corresponding capability index in the capability information of the first cell and/or the capability information of the adjacent cell of the first cell according to a preset criterion to obtain an evaluation value of the first cell and/or the adjacent cell of the first cell; the capability index of the service requirement corresponding to the service request comprises: one or more of service requirement grade, rate required by service bearing, time delay value, error rate requirement, service interruption probability requirement and service quality guarantee capability information; selecting one or more cells of which the evaluation value exceeds a first preset value and the measurement result of the reference signal receiving strength exceeds a second preset value and/or the measurement result of the reference signal receiving quality exceeds a third preset value as a target cell for sending a service request or a paging response;

the capability information of the first cell specifically includes: one or more kinds of capability information of the coverage capability, service bearing capability, cell throughput, edge rate, capability of supporting mobility, capability of guaranteeing different service quality and load condition of the first cell;

the capability information of the neighboring cell of the first cell specifically includes: one or more kinds of capability information of coverage capability, service carrying capability, cell throughput, edge rate, mobility supporting capability, service quality guaranteeing capability and load capability of a first cell neighbor cell;

wherein the first cell neighbor cell comprises: one or more of neighboring cells which are in the same system and same frequency as the first cell, neighboring cells which are in the same system and different frequency as the first cell and neighboring cells which are in different systems from the first cell.

5. The method of claim 4,

when the one or more target cells can not bear the service request or the paging response of the terminal, the target cells send service request or paging response rejection messages to the terminal, so that the terminal determines a new target cell for sending the service request or the paging response again;

the service request or paging response rejection message includes cell identification information of one or more cells that recommend the terminal to resend the service request or paging response, where the cell identification information includes: one or more of a cell IP address, a cell frequency point, a cell address, a physical resource position pre-allocated for successfully establishing a service request or a paging response and cell wireless network temporary identification information.

6. The method of claim 4,

when the target cell can not bear the service request or the paging response of the terminal, the target cell redirects the terminal in an idle state to a new target cell which can bear the service request or the paging response; or the terminal in the connected state is switched to a new target cell capable of bearing the service request.

7. The method of claim 4,

when the target cell cannot bear the service request or the paging response of the terminal, the target cell feeds back cell identification information of a new target cell capable of bearing the service request or the paging response to a network side, wherein the cell identification information comprises: one or more of a cell IP address, a cell frequency point, a cell address, a physical resource position pre-allocated for successfully establishing a service request or a paging response and cell wireless network temporary identification information.

8. The method according to any one of claims 5 to 7,

one or more target cells which can not bear the service request or the paging response of the terminal can perform information interaction with the adjacent cells of the target cells through the interface between the base stations, and find and determine a new target cell which can meet the service request or the paging response of the terminal.

9. The method according to claim 8, wherein the target cell performs information interaction with respective neighboring cells through an inter-base station interface, specifically:

a target cell which can not bear a terminal service request or a paging response sends the service request of the terminal or service demand information in the paging response to an adjacent cell of the target cell through an interface between base stations, so that the adjacent cell of the target cell compares the service demand information in the service request or the paging response with the self capacity to judge whether the service request or the paging response can be borne, if the service request or the paging response can be borne, confirmation feedback is sent to the target cell, and if the service request or the paging response can be borne, feedback refusal is sent;

wherein, the service requirement information in the service request or the paging response includes: one or more information of service requirement grade, rate required by service bearing, time delay value, error rate requirement, service interruption probability requirement and service quality guarantee capability information;

and when the target cell which can not bear the service request or the paging response of the terminal receives the confirmation feedback of the plurality of adjacent cells, selecting one or more cells as a new target cell.

10. An apparatus for cell selection, applied to a terminal side, comprising:

a receiving module for receiving broadcast information; the broadcast information includes: capability information of the first cell and/or capability information of neighboring cells of the first cell; the first cell is a resident cell or a service cell;

a selecting module, configured to select, according to the broadcast information, to send a service request to one or more target cells matching service requirements when the terminal has an uplink service, where the selecting module includes: selecting one or more target cells to send service requests according to the capability information of the first cell and/or the capability information of the adjacent cells of the first cell, the service requirements corresponding to the service requests and the measurement results of the reference signal receiving strength and/or the reference signal receiving quality of the first cell and/or the adjacent cells of the first cell by the terminal; when there is downlink service, according to the broadcast information, selecting to send service request or paging response to one or more target cells matching service requirement, including: according to a preset criterion, carrying out weighted calculation on each capability index of the service requirement corresponding to the service request and the corresponding capability index in the capability information of the first cell and/or the capability information of the adjacent cell of the first cell to obtain an evaluation value of the first cell and/or the adjacent cell of the first cell; the capability index of the service requirement corresponding to the service request comprises: one or more of service requirement grade, rate required by service bearing, time delay value, error rate requirement, service interruption probability requirement and service quality guarantee capability information; and selecting one or more cells of which the evaluation value exceeds a first preset value and the measurement result of the reference signal receiving strength exceeds a second preset value and/or the measurement result of the reference signal receiving quality exceeds a third preset value as a target cell for sending a service request or a paging response.

11. The apparatus according to claim 10, wherein the selecting module is specifically configured to select one or more target cells to send the service request according to the capability information of the first cell and/or the capability information of the first cell neighboring cell, a service requirement corresponding to the service request, and a measurement result of the reference signal received strength and/or the reference signal received quality of the terminal itself for the first cell and/or the first cell neighboring cell.

12. The apparatus of any one of claims 10-11, wherein the selection module comprises:

an obtaining unit, configured to perform weighted calculation on each capability index of a service requirement corresponding to the service request and a corresponding capability index in capability information of the first cell and/or capability information of a neighboring cell of the first cell according to a preconfigured criterion, to obtain an evaluation value of the first cell and/or the neighboring cell of the first cell;

the capability index of the service requirement corresponding to the service request includes but is not limited to one or more of the following indexes: the service requirement grade, the rate required by service bearing, a time delay value, a bit error rate requirement, a service interruption probability requirement and service quality guarantee capability information;

and the first selection unit is used for selecting one or more cells of which the evaluation value exceeds a first preset value, the measurement result of the reference signal receiving strength exceeds a second preset value and/or the measurement result of the reference signal receiving quality exceeds a third preset value as a target cell for sending the service request or the paging response.

13. The apparatus of claim 10, further comprising:

a first sending module, configured to directly send a service request or a paging response to the target cell; or sending a service request or a paging response to the first cell, where the service request or the paging response carries cell identification information of the target cell and is used to assist the first cell in switching or redirecting the service request to the target cell;

wherein the cell identification information includes: one or more of a cell IP address, a cell frequency point, a cell address, a physical resource position pre-allocated for successfully establishing a service request or a paging response and cell wireless network temporary identification information.

14. A device for cell selection is applied to a network device side, and is characterized by comprising:

the second sending module is used for sending the broadcast information; the broadcast information includes: capability information of the first cell and/or capability information of neighboring cells of the first cell;

when the terminal has uplink service, the terminal selects to send a service request to one or more target cells matched with the service requirement according to the broadcast information, wherein the terminal selects one or more target cells to send the service request according to the capability information of the first cell and/or the capability information of the adjacent cell of the first cell, the service requirement corresponding to the service request, and the measurement result of the reference signal receiving strength and/or the reference signal receiving quality of the terminal to the first cell and/or the adjacent cell of the first cell;

when the terminal has downlink service, the terminal selects to send a service request or a paging response to one or more target cells matched with the service requirement according to the broadcast information, wherein the terminal performs weighted calculation on each capability index of the service requirement corresponding to the service request and corresponding capability index in the capability information of the first cell and/or the capability information of the adjacent cell of the first cell according to a preset criterion to obtain an evaluation value of the first cell and/or the adjacent cell of the first cell; the capability index of the service requirement corresponding to the service request comprises: one or more of service requirement grade, rate required by service bearing, time delay value, error rate requirement, service interruption probability requirement and service quality guarantee capability information; and selecting one or more cells of which the evaluation value exceeds a first preset value and the measurement result of the reference signal receiving strength exceeds a second preset value and/or the measurement result of the reference signal receiving quality exceeds a third preset value as a target cell for sending a service request or a paging response.

15. The apparatus of claim 14, further comprising:

a third sending module, configured to, when one or more target cells cannot bear a service request or a paging response of the terminal, enable the target cell to send a service request or a paging response reject message to the terminal, and enable the terminal to re-determine a new target cell to send the service request or the paging response;

the service request or paging response reject message includes cell identification information of one or more cells that recommend the terminal to resend the service request, where the cell identification information includes: one or more of a cell IP address, a cell frequency point, a cell address, a physical resource position pre-allocated for successfully establishing a service request or a paging response and cell wireless network temporary identification information.

16. The apparatus of claim 14, further comprising:

a redirection/switching module, configured to redirect, when a target cell cannot bear a service request or a paging response of a terminal, the terminal in an idle state to a new target cell that can bear the service request or the paging response by the target cell; or the terminal in the connected state is switched to a new target cell capable of bearing the service request.

17. The apparatus of claim 14, further comprising:

a feedback module, configured to enable a target cell to feed back cell identifier information of a new target cell that can carry a service request to a network side when the target cell cannot carry the service request or the paging response of the terminal, where the cell identifier information includes: one or more of a cell IP address, a cell frequency point, a cell address, a physical resource position pre-allocated for successfully establishing the service request and cell wireless network temporary identification information.

18. The apparatus of any one of claims 14 to 17, further comprising:

and the information interaction module is used for enabling one or more target cells which cannot bear the service request or the paging response of the terminal to perform information interaction with the adjacent cells of the target cell through an interface between the base stations, and searching and determining a new target cell which can meet the service request or the paging response of the terminal.

19. The apparatus of claim 18, wherein the information interaction module comprises:

an information interaction unit, configured to enable a target cell that cannot bear a terminal service request or a paging response to send a service request of the terminal or service requirement information in the paging response to an adjacent cell of the target cell through an interface between base stations, enable the adjacent cell of the target cell to compare with its own capability according to the service requirement information in the service request or the paging response, determine whether the service request or the paging response can be borne, if the service request or the paging response can be borne, send a confirmation feedback to the target cell, and if the service request or the paging response can be borne, send a rejection feedback;

wherein, the service requirement information in the service request or the paging response includes: one or more information of service requirement grade, rate required by service bearing, time delay value, error rate requirement, service interruption probability requirement and service quality guarantee capability information;

a second selecting unit, configured to select one or more cells as a new target cell when the target cell that cannot carry the service request or the paging response of the terminal receives acknowledgement feedbacks from multiple neighboring cells.

20. A method for cell selection, applied to a terminal side, includes:

receiving a paging message from a network side, wherein the paging message comprises one or more of service demand grade, rate required by service bearing, delay value, error rate requirement, service interruption probability requirement and service quality guarantee capability information, and a first cell is a resident cell or a service cell;

when there is uplink service, according to the paging message, selecting to send service request to one or more target cells matching service requirement, including: selecting one or more target cells to send service requests according to the capability information of the first cell and/or the capability information of the adjacent cells of the first cell, the service requirements corresponding to the service requests and the measurement results of the reference signal receiving strength and/or the reference signal receiving quality of the first cell and/or the adjacent cells of the first cell by the terminal;

when there is downlink service, according to the paging message, selecting to send service request or paging response to one or more target cells matching service requirement, including: according to a preset criterion, carrying out weighted calculation on each capability index of the service requirement corresponding to the service request and the corresponding capability index in the capability information of the first cell and/or the capability information of the adjacent cell of the first cell to obtain an evaluation value of the first cell and/or the adjacent cell of the first cell; the capability index of the service requirement corresponding to the service request comprises: one or more of service requirement grade, rate required by service bearing, time delay value, error rate requirement, service interruption probability requirement and service quality guarantee capability information; and selecting one or more cells of which the evaluation value exceeds a first preset value and the measurement result of the reference signal receiving strength exceeds a second preset value and/or the measurement result of the reference signal receiving quality exceeds a third preset value as a target cell for sending a service request or a paging response.

21. The method according to claim 20, wherein the selecting to send the paging response to the one or more target cells matching the service requirement according to the paging message comprises:

and selecting one or more target cells to send paging response according to the paging message, and in combination with the capability information of the corresponding first cell and/or the capability information of the adjacent cell of the first cell in the paging message, and the measurement result of the reference signal receiving strength and/or the reference signal receiving quality of the terminal to the first cell and/or the adjacent cell of the first cell.

22. The method according to claim 20, wherein the selecting of sending the service request or the paging response to the one or more target cells matching the service requirement is:

according to a preset criterion, carrying out weighted calculation on each capacity index of the service requirement corresponding to the paging message and the corresponding capacity index in the capacity information of the first cell and/or the capacity information of the adjacent cell of the first cell to obtain an evaluation value of the first cell and/or the adjacent cell of the first cell;

the capability index of the service requirement corresponding to the service request comprises: one or more of service requirement grade, rate required by service bearing, time delay value, error rate requirement, service interruption probability requirement and service quality guarantee capability information;

and selecting one or more cells of which the evaluation value exceeds a first preset value and the measurement result of the reference signal receiving strength exceeds a second preset value and/or the measurement result of the reference signal receiving quality exceeds a third preset value as a target cell for sending a service request or a paging response.

23. A method for cell selection is applied to a network device side, and is characterized by comprising the following steps:

sending a paging message; the paging message includes: one or more of service requirement grade, rate required by service bearing, time delay value, error rate requirement, service interruption probability requirement and service quality guarantee capability information;

when the terminal has uplink service, sending a paging response to one or more target cells matched with the service requirement according to the paging message, wherein the terminal selects one or more target cells to send the service request according to the capability information of the first cell and/or the capability information of the adjacent cell of the first cell, the service requirement corresponding to the service request, and the measurement result of the reference signal receiving strength and/or the reference signal receiving quality of the terminal to the first cell and/or the adjacent cell of the first cell;

when the terminal has downlink service, sending a service request or a paging response to one or more target cells matched with the service requirement according to the paging message, wherein the terminal performs weighted calculation on each capability index of the service requirement corresponding to the service request and corresponding capability index in the capability information of the first cell and/or the capability information of the adjacent cell of the first cell according to a preset criterion to obtain an evaluation value of the first cell and/or the adjacent cell of the first cell; the capability index of the service requirement corresponding to the service request comprises: one or more of service requirement grade, rate required by service bearing, time delay value, error rate requirement, service interruption probability requirement and service quality guarantee capability information; and selecting one or more cells of which the evaluation value exceeds a first preset value and the measurement result of the reference signal receiving strength exceeds a second preset value and/or the measurement result of the reference signal receiving quality exceeds a third preset value as a target cell for sending a service request or a paging response.

24. An apparatus for cell selection, applied to a terminal side, comprising:

a receiving module, configured to receive a paging message; the paging message includes: one or more of service requirement grade, rate required by service bearing, time delay value, error rate requirement, service interruption probability requirement and service quality guarantee capability information; the first cell is a resident cell or a service cell;

a selecting module, configured to select, according to the paging message, to send a service request to one or more target cells matching a service requirement when the terminal has an uplink service, where the selecting module includes: selecting one or more target cells to send service requests according to the capability information of the first cell and/or the capability information of the adjacent cells of the first cell, the service requirements corresponding to the service requests and the measurement results of the reference signal receiving strength and/or the reference signal receiving quality of the first cell and/or the adjacent cells of the first cell by the terminal;

when there is downlink service, according to the paging message, selecting to send service request or paging response to one or more target cells matching service requirement, including: according to a preset criterion, carrying out weighted calculation on each capability index of the service requirement corresponding to the service request and the corresponding capability index in the capability information of the first cell and/or the capability information of the adjacent cell of the first cell to obtain an evaluation value of the first cell and/or the adjacent cell of the first cell; the capability index of the service requirement corresponding to the service request comprises: one or more of service requirement grade, rate required by service bearing, time delay value, error rate requirement, service interruption probability requirement and service quality guarantee capability information; and selecting one or more cells of which the evaluation value exceeds a first preset value and the measurement result of the reference signal receiving strength exceeds a second preset value and/or the measurement result of the reference signal receiving quality exceeds a third preset value as a target cell for sending a service request or a paging response.

25. A device for cell selection is applied to a network device side, and is characterized by comprising:

a second sending module, configured to send a paging message; the paging message includes: one or more of service requirement grade, rate required by service bearing, time delay value, error rate requirement, service interruption probability requirement and service quality guarantee capability information;

the paging message is used for assisting in sending a service request to one or more target cells matched with the service requirement according to the paging message when the terminal has uplink service, wherein the terminal selects one or more target cells to send the service request according to the capability information of the first cell and/or the capability information of the adjacent cell of the first cell, the service requirement corresponding to the service request, and the measurement result of the reference signal receiving strength and/or the reference signal receiving quality of the terminal to the first cell and/or the adjacent cell of the first cell;

when the terminal has downlink service, sending a service request or a paging response to one or more target cells matched with the service requirement according to the paging message, wherein the terminal performs weighted calculation on each capability index of the service requirement corresponding to the service request and corresponding capability index in the capability information of the first cell and/or the capability information of the adjacent cell of the first cell according to a preset criterion to obtain an evaluation value of the first cell and/or the adjacent cell of the first cell; the capability index of the service requirement corresponding to the service request comprises: one or more of service requirement grade, rate required by service bearing, time delay value, error rate requirement, service interruption probability requirement and service quality guarantee capability information; and selecting one or more cells of which the evaluation value exceeds a first preset value and the measurement result of the reference signal receiving strength exceeds a second preset value and/or the measurement result of the reference signal receiving quality exceeds a third preset value as a target cell for sending a service request or a paging response.

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