CN110636569A

CN110636569A - Cell reselection method, reselection parameter sending method, terminal and network equipment

Info

Publication number: CN110636569A
Application number: CN201810661127.6A
Authority: CN
Inventors: 张晓然; 江天明; 刘光毅; 胡南
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2018-06-25
Filing date: 2018-06-25
Publication date: 2019-12-31

Abstract

The embodiment of the invention provides a cell reselection method, a reselection parameter sending method, a terminal and network equipment, wherein the cell reselection method comprises the following steps: receiving reselection parameters from a network device for use by a plurality of types of terminals; and performing cell reselection according to the reselection parameters matched with the type of the terminal. The scheme of the invention enables different types of terminals to reselect the cell according to the reselection parameters sent by the network side, thereby maximally utilizing frequency spectrum and network resources.

Description

Cell reselection method, reselection parameter sending method, terminal and network equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a cell reselection method, a reselection parameter sending method, a terminal, and a network device.

Background

In the prior art, after a UE (terminal) is powered on, a PLMN (Public Land Mobile Network) search is performed first, and then a cell with the strongest signal is searched on the PLMN for camping, which is an initial cell selection process.

After cell selection is completed, the UE can measure cells of other frequency points, perform cell reselection and select a more appropriate cell to camp on. In addition to considering the downlink signal quality of the cell, the cell reselection may also consider a frequency priority factor. The frequency priority and associated reselection parameters are broadcast to the UE via system messages.

With the continuous Evolution of Mobile communication technology, there are network deployments of different systems in operator networks, such as GSM (Global System for Mobile Communications), SCDMA (synchronous code Division multiple access), TD-LTE (Time Division Long Term Evolution), FDD-LTE (Frequency Division Long Term Evolution), and other systems coexisting.

With the advent of the 5G era, network deployment will become more and more complex. In 5G, there are two ways of independent deployment and dependent deployment. In the non-independent deployment mode, when the UE is in an idle state, cell selection and reselection are firstly carried out on 4G, and after the UE enters a connected state, 5G is added as an auxiliary node for capacity supplement. Therefore, the idle cell selection and reselection process of the 5G UE in the non-independent deployment mode is completed in the 4G standard.

The two terminals are independently deployed and non-independently deployed, and the priority requirements on the same frequency point are different. However, currently, the priorities of the frequency points broadcasted to all UEs for the same frequency point are the same, which may cause that it is not appropriate to deploy the camping cell that is selected by one of the two terminals, independent deployment and non-independent deployment.

Disclosure of Invention

The invention provides a cell reselection method, a reselection parameter sending method, a terminal and network equipment, which can enable different types of terminals to reselect cells according to reselection parameters sent by a network side, and maximize the utilization of frequency spectrums and network resources.

To solve the above technical problem, an embodiment of the present invention provides the following solutions:

a cell reselection method is applied to a terminal and comprises the following steps:

receiving reselection parameters from a network device for use by a plurality of types of terminals;

and performing cell reselection according to the reselection parameters matched with the type of the terminal.

Wherein the reselection parameters include: the method comprises the steps of measuring one or more frequency point information by a terminal, and the frequency point priority and the frequency point reselection parameters of the frequency points.

Wherein, the reselection parameters of the frequency points comprise: at least one of a reselection threshold, a reselection bias value, a reselection hysteresis value and a cell reselection timer of the frequency point.

The cell reselection is carried out according to reselection parameters matched with the type of the terminal, and comprises the following steps:

if the frequency point priority of the measuring frequency point is higher than the priority of the frequency point which is resided by the terminal currently, in a cell reselection timer of the measuring frequency point, the signal quality of a cell on the measuring frequency point is higher than the reselection threshold of the measuring frequency point, and the terminal reselects the cell on the measuring frequency point; or

And if the frequency point priority of the measuring frequency point is lower than the priority of the current resident frequency point of the terminal, in a cell reselection timer of the measuring frequency point, the signal quality of a cell on the current resident frequency point of the terminal is lower than a reselection threshold of the current resident frequency point of the terminal, and when the signal quality of an adjacent cell is higher than the reselection threshold, the terminal reselects the adjacent cell.

the frequency point priority of the measuring frequency point is the same as the priority of the frequency point currently residing in the terminal,

if (Q1-Q-OffsetFreq) > (Q2+ P), the terminal reselects to the neighbor cell; wherein, Q1 is the cell quality of the neighboring cell, Q-OffsetFreq is the reselection offset, Q2 is the cell quality of the cell on the current camping frequency point, and P is the reselection hysteresis value.

Wherein, the terminal includes: a long term evolution, LTE, terminal or a 5G non-independently deployed terminal.

The embodiment of the invention also provides a method for sending reselection parameters, which is applied to network equipment and comprises the following steps:

and sending reselection parameters for various types of terminals to use in cell reselection.

An embodiment of the present invention further provides a terminal, including:

a transceiver for receiving reselection parameters from a network device for use by a plurality of types of terminals;

and the processor is used for reselecting the cell according to the reselection parameters matched with the type of the terminal.

Wherein the processor is specifically configured to: when the priority of the frequency point of the measuring frequency point is higher than the priority of the frequency point of the terminal residing currently, in a cell reselection timer of the measuring frequency point, the signal quality of a cell on the measuring frequency point is higher than the reselection threshold of the measuring frequency point, and the terminal reselects the cell on the measuring frequency point; or

When the priority of the frequency point of the measuring frequency point is lower than the priority of the current resident frequency point of the terminal, in a cell reselection timer of the measuring frequency point, the signal quality of a cell on the current resident frequency point of the terminal is lower than a reselection threshold of the current resident frequency point of the terminal, and when the signal quality of an adjacent cell is higher than the reselection threshold, the terminal reselects the adjacent cell.

Wherein the processor is specifically configured to: when the priority of the frequency point of the measurement frequency point is the same as the priority of the frequency point currently residing in the terminal, if (Q1-Q-OffsetFreq) > (Q2+ P), the terminal reselects to the adjacent cell; wherein, Q1 is the cell quality of the neighboring cell, Q-OffsetFreq is the reselection offset, Q2 is the cell quality of the cell on the current camping frequency point, and P is the reselection hysteresis value.

An embodiment of the present invention further provides a network device, including: and the transceiver is used for transmitting reselection parameters used for cell reselection of various types of terminals.

The embodiment of the invention also provides a cell reselection method, which comprises the following steps:

receiving parameter information related to cell reselection of a plurality of frequency points, wherein the parameter information comprises: whether the frequency point supports the indication information of the first type network or the second type network or not, or whether the cell supports the indication information of the first type network or the second type network or not;

and performing cell reselection according to the parameter information and the network type supported by the terminal.

If the terminal is a terminal supporting a first type network, the step of reselecting the cell according to the parameter information and the network type supported by the terminal comprises the following steps:

and the terminal reselects the cell supporting the frequency point of the first type network according to the parameter information.

If the terminal is a terminal supporting a second type network, the step of reselecting the cell according to the parameter information and the network type supported by the terminal comprises:

and the terminal reselects the cell supporting the frequency point of the second type network according to the parameter information.

Wherein the first type network is a Long Term Evolution (LTE) network;

the second type network is a 5G non-independent deployment network.

The embodiment of the invention also provides a method for sending reselection parameters, which comprises the following steps:

sending parameter information related to cell reselection of a plurality of frequency points, wherein the parameter information comprises: whether the frequency point supports the indication information of the first type network or the second type network or not, or whether the cell supports the indication information of the first type network or the second type network or not;

the parameter information is used by the terminal for cell reselection according to the network types supported by the terminal.

An embodiment of the present invention further provides a terminal, including:

a transceiver, configured to receive parameter information related to cell reselection at multiple frequency points, where the parameter information includes: whether the frequency point supports the indication information of the first type network or the second type network or not, or whether the cell supports the indication information of the first type network or the second type network or not;

and the processor is used for reselecting the cell according to the parameter information and the network type supported by the terminal.

And if the terminal is a terminal supporting the first type network, the processor is specifically configured to reselect a cell supporting the frequency point of the first type network according to the parameter information.

And if the terminal is a terminal supporting a second type network, the processor is specifically configured to reselect a cell supporting a frequency point of the second type network according to the parameter information.

An embodiment of the present invention further provides a network device, including:

a transceiver, configured to send parameter information related to cell reselection at multiple frequency points, where the parameter information includes: whether the frequency point supports the indication information of the first type network or the second type network or not, or whether the cell supports the indication information of the first type network or the second type network or not;

An embodiment of the present invention further provides a communication device, including: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above.

Embodiments of the present invention also provide a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method as described above.

The scheme of the invention at least comprises the following beneficial effects:

according to the scheme, the network side broadcasts parameter information for various types of terminals to use in cell reselection, different reselection parameters can be provided for different types of terminals aiming at the same frequency point, and therefore, after the different types of terminals receive the parameter information, the different types of terminals can read the reselection parameters matched with the types of the terminals according to the types and requirements of the terminals and select the reselected cell according to the reselection parameters. The requirements of each terminal are met, and the frequency spectrum and network resources are utilized to the maximum extent.

Drawings

Fig. 1 is a flow chart of a cell reselection method of the present invention;

FIG. 2 is another flow chart of a cell reselection method of the present invention;

fig. 3 is a schematic structural framework diagram of the communication device of the present invention.

Detailed Description

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

The embodiments of the present invention provide a cell reselection method, a reselection parameter sending method, a terminal, and a network device, aiming at the problem that in the prior art, the requirements of each terminal cannot be met because the frequency point priorities cannot be set for different requirements of different types of terminals, and thus, the requirements of each terminal cannot be met.

As shown in fig. 1, a cell reselection method according to an embodiment of the present invention is applied to a terminal, and includes:

step 11, receiving reselection parameters for various types of terminals from network equipment;

and step 12, performing cell reselection according to the reselection parameters matched with the type of the terminal.

In this embodiment, the various types of terminals may include, for example: an LTE (long term evolution) terminal and a 5G NR terminal supporting 5G non-independent deployment; of course, terminals supporting other network types may also be included.

In this embodiment, the reselection parameters include: the method comprises the steps that information of one or more frequency points measured by a terminal, the frequency point priority of the frequency points and reselection parameters of the frequency points are obtained;

the reselection parameters of the frequency points comprise: at least one of a reselection threshold, a reselection bias value, a reselection hysteresis value and a cell reselection timer of the frequency point.

The frequency point information can be frequency points f1 and f 2; frequency point priorities, such as: 0-7, 0 for lowest priority and 7 for highest priority); when the priorities of the two frequency points are the same, when a cell is selected, parameters such as a reselection threshold of the frequency point, a reselection bias value of the frequency point, a reselection hysteresis value, a cell reselection timer and the like are required. Of course, when the priorities of the two frequency points are different, when a cell is selected, parameters such as a cell reselection timer and a reselection threshold of the frequency point may also be considered.

In an embodiment of the present invention, the step 12 may specifically include:

if the frequency point priority of the measuring frequency point is higher than the priority of the frequency point which is resided by the terminal currently, in a cell reselection timer of the measuring frequency point, the signal quality of a cell on the measuring frequency point is higher than the reselection threshold of the measuring frequency point, and the terminal reselects the cell on the measuring frequency point;

in an embodiment of the present invention, the step 12 may further include: and if the frequency point priority of the measuring frequency point is lower than the priority of the current resident frequency point of the terminal, in a cell reselection timer of the measuring frequency point, the signal quality of a cell on the current resident frequency point of the terminal is lower than a reselection threshold of the current resident frequency point of the terminal, and when the signal quality of an adjacent cell is higher than the reselection threshold, the terminal reselects the adjacent cell. The neighboring cells can be other cells except the resident cells on the current resident frequency points.

and if the priority of the frequency point of the measured frequency point is the same as the priority of the frequency point currently residing in the terminal, (Q1-Q-offsetFreq) > (Q2+ P), the terminal reselects the adjacent cell, wherein Q1 is the cell quality of the adjacent cell, Q-offsetFreq is reselection offset, Q2 is the cell quality of the cell on the currently residing frequency point, and P is reselection hysteresis.

The specific implementation of the above embodiment is described below with reference to specific terminal types:

if the terminal is a first type terminal, the first type terminal can be the LTE terminal, and the first type terminal performs cell reselection according to a first set of reselection parameters matched with the type of the first type terminal; the first set of reselection parameters herein may include: the method comprises the steps that one or more pieces of frequency point information, the frequency point priority of a frequency point and reselection parameters of the frequency point are measured by a first type terminal; further, if the frequency point priorities of a plurality of frequency points measured by the first type terminal are different from the priority of the frequency point currently residing in the terminal in the first set of reselection parameters, the first type terminal selects a cell on the first frequency point with the highest frequency point priority from the plurality of frequency points; and reselecting the cell according to the selected cell on the first frequency point and the reselection parameter of the first frequency point.

For example: network equipment broadcasts reselection parameters required by a terminal for cell reselection in a system message, wherein the reselection parameters can include measurement parameters related to cell measurement, two sets of reselection parameters are respectively broadcast for one frequency point, and the same frequency point has different priorities in different sets of parameters:

the first set of reselection parameters comprises: the frequency point priorities of the frequency points f1 and f2, f1 are 0 (low priority), and the frequency point priority of the frequency point f2 is 7 (high priority);

the second set of reselection parameters includes: the frequency point priorities of the frequency points f1 and f2, f1 are 7 (high priority), and the frequency point priority of the frequency point f2 is 0 (low priority); of course, the two sets of reselection parameters may also include reselection parameters of the frequency points, and the like.

After receiving the two sets of reselection parameters, the first type terminal reads a first set of reselection parameters matched with the type of the first type terminal, and of course, the first type terminal can also receive the first set of reselection parameters; in the first set of reselection parameters, the priority of the frequency point f2 is higher, the terminal preferentially resides in the cell of the frequency point f2, and because the frequency point priority of the frequency point f2 is higher than the frequency point priority of the frequency point f1, the first type terminal reselects the cell of the frequency point f2 (i.e., the first frequency point).

For another example: network equipment broadcasts reselection parameters required by a terminal for cell reselection in a system message, wherein the reselection parameters can include measurement parameters related to cell measurement, one set of reselection parameters is broadcast for one frequency point, two sets of reselection parameters are broadcast for another frequency point, and the same frequency point broadcasts different priorities in different sets of parameters:

the first set of reselection parameters comprises f1 frequency points and f2, wherein the priority level 'cellreselection priority' of the f1 frequency points is 4; the priority "cellreselection priority" of the first set of parameters of the f2 frequency point is 0 (the priority is lower than f 1);

a second set of reselection parameters, including f2 frequency bin, and f2 frequency bin with priority "" cellreselection priority "of 7 (higher than f 1);

when the terminal is a first type terminal, according to a first set of reselection parameters, the frequency point priority of the frequency point f1 is higher, so that the UE preferentially resides in the cell of the frequency point f1, and within the reselection timer t-reselection EUTRA time of the frequency point f1, if the cell quality on the frequency point f1 is higher than the reselection threshold threshX-High, the UE can reselect the cell of the frequency point f 1; in the reselection timer t-reselection eutra time of the frequency point f1, if the cell quality on the frequency point f1 is lower than the reselection threshold threshX-High of the cell, and the signal quality of the neighboring cell is higher than the reselection threshold, the terminal may reselect to the neighboring cell.

For another example: network equipment broadcasts reselection parameters required by a terminal for cell reselection in a system message, wherein the reselection parameters may include measurement parameters related to cell measurement, one reselection parameter is broadcast for one frequency point, two reselection parameters are broadcast for another frequency point, and the priorities of all frequency points are the same:

the priority "cellreselection priority" of the f1 frequency point is 5; the priority "cellreselection priority" of the frequency point of f2 is 5, the priorities of the two frequency points are the same, wherein "reselection offset value" q-OffsetFreq _1 corresponding to the frequency point with the same priority;

the priority "cellreselection priority" of the f2 frequency point is 5, the priority is the same as the first set of parameters, but the reselection offset value "q-OffsetFreq _ 2" corresponding to the frequency point with the same priority is different from the first set of reselection parameters, and q-OffsetFreq _2< q-OffsetFreq _ 1;

the first type terminal reads a first set of reselection parameters, wherein the frequency point priorities of the f1 frequency point and the f2 frequency point are the same, so that the terminal judges that a cell is reselected according to the criterion that 'cell quality-reselection offset (q-OffsetFreq _1) of a neighboring cell' is greater than 'cell quality + reselection hysteresis value of a resident cell on a current resident frequency point'.

If the terminal is a second type terminal, the second type terminal may be a 5G NR terminal supporting 5G non-independent deployment, and the second type terminal performs cell reselection according to a first set of reselection parameters and/or a second set of reselection parameters matched with its type; the second set of reselection parameters herein may include: the method comprises the steps that one or more pieces of frequency point information, the frequency point priority of a frequency point and reselection parameters of the frequency point are measured by a second type terminal; further, if the frequency point priorities of the multiple frequency points measured by the second type terminal are different from the priority of the frequency point currently residing in the terminal in the second set of reselection parameters, the second type terminal selects a cell on the second frequency point with the highest frequency point priority from the multiple frequency points; and reselecting the cell according to the selected cell on the second frequency point and the reselection parameter of the second frequency point.

For example: network equipment broadcasts reselection parameters required by a terminal for cell reselection in a system message, wherein the reselection parameters can include measurement parameters related to cell measurement, two sets of reselection parameters are respectively broadcast for one frequency point, and the same frequency point broadcasts different priorities in different sets of parameters:

After the second type terminal receives the reselection parameters, the second type terminal judges whether to use the first set of reselection parameters or the second set of reselection parameters according to the historical measurement information of the second type terminal, specifically:

when the second type terminal measures that coverage of a second type network (such as NR) exists, the second type terminal performs cell reselection according to the second set of reselection parameters; for example, when the terminal measures that there is NR coverage at this time, which indicates that there is a possibility of non-independent deployment of dual connectivity currently, the terminal performs cell measurement and reselection using the second set of reselection parameters;

measuring no coverage of a second type network (such as NR) but coverage of a first type network (such as LTE) at the second type terminal, and performing cell reselection by the second type terminal according to the first set of reselection parameters; for example, when the terminal measures that there is no NR coverage at this time, only LTE coverage exists, which indicates that it is currently not feasible to perform non-independent deployment of dual connectivity, and the second type terminal performs cell measurement and reselection using the first set of reselection parameters.

When the terminal measures that NR coverage exists at the moment, the second type terminal reads a first set of reselection parameters and a second set of reselection parameters of the f1 frequency point and the f2 frequency point, and simultaneously discovers that the second set of reselection parameters of f1 and f2 have different places from the first set of reselection parameters, so that the second set of reselection parameters covers the frequency point priority in the first set of reselection parameters, the frequency point priority of f1 is higher than f2, the UE preferentially resides in a cell of the f1 frequency point, the frequency point priority of f1 is higher than f2, and the second type terminal preferentially resides in a cell of the f1 frequency point. When the reselection timer t-reselection eutra is in f1, if the cell quality on the f1 frequency is higher than the threshold threshX-High, the UE may reselect to the cell.

and at the moment, the second type terminal measures that NR covers, and meanwhile, the second set of reselection parameters of f2 is found to have a place different from the first set of reselection parameters, so that the second set of reselection parameters covers the priority of the frequency point in the first set of reselection parameters, namely the frequency point priority of f2 is higher than f1, and the UE preferentially resides in the cell of the frequency point of f 2. When the reselection timer t-reselection eutra of the frequency point is measured at the f2 frequency point, if the cell quality on the f2 frequency point is higher than the threshold threshX-High, the UE can reselect to the cell. In the reselection timer t-reselection eutra time of the frequency point of f2, if the cell quality on the frequency point of f2 is lower than the reselection threshold threshX-High of the frequency point and the signal quality of the neighboring cell is higher than the reselection threshold, the UE may reselect to the neighboring cell.

the second type terminal measures that NR covers the current time, and simultaneously finds that the second set of reselection parameters of f2 has a place different from the first set of reselection parameters, so that the second set of reselection parameters covers the priority of the frequency point in the first set of reselection parameters, namely the reselection offset value q-OffsetFreq is changed;

and the second type terminal judges the cell to be reselected according to the criterion that the 'cell quality-reselection offset (q-OffsetFreq _2) of the adjacent cell' is greater than 'cell quality of the resident cell on the current resident frequency point + reselection hysteresis value'. Since q-OffsetFreq _2< q-OffsetFreq _1, compared with the LTE UE, the NSA UE can more easily reselect to the cell of the f2 frequency point, and the probability that the UE resides in the cell of the f2 frequency point is increased.

In the above embodiments of the present invention, the types of the parameters included in the first set of reselection parameters and the second set of reselection parameters are the same, but the specific parameter values may be partially the same; for example, the first set of reselection parameters for frequency point f1 includes: the method comprises the following steps of 1, a frequency point priority, 1, a frequency point reselection threshold, 1, a reselection hysteresis value and 1, and a cell reselection timer; the first set of reselection parameters for frequency point f2 also includes: the method comprises the following steps of (1) frequency point priority 2, frequency point reselection threshold 2, reselection offset value 2, reselection hysteresis value 2 and cell reselection timer 2; however, the frequency point priority 1 and the frequency point priority 2 are different, and the rest may be the same or different;

in this embodiment of the present invention, the second set of reselection parameters for the frequency point f1 may also include parameters different from the first set of reselection parameters for the frequency point f1, such as frequency point information and other parameters; for example, the second set of reselection parameters only includes the frequency point priorities, the rest of the parameter information is respectively the same as that of the first set of reselection parameters, and the second set of reselection parameters may not include those parameters that are the same as that of the first set of reselection parameters.

When the second set of reselection parameters is different from the first set of reselection parameters, after the terminal receives the two sets of reselection parameters, the second set of reselection parameters can be overlaid on the first set of reselection parameters, that is, the first set of reselection parameters is discarded, and after the second set of reselection parameters is adopted or a union of the two sets of reselection parameters is adopted, the frequency point priority is kept by taking a larger value.

In the embodiment of the invention, the network side broadcasts different reselection parameters comprising frequency point priorities aiming at different types of terminals, so that the frequency spectrum and network resources are utilized to the maximum extent, and the in-situ switching and the increased time delay and signaling overhead are avoided.

Corresponding to the method on the terminal side, an embodiment of the present invention further provides a method for sending reselection parameters, which is applied to a network device on a network side, and the method includes:

In this embodiment, the various types of terminals may include, for example: LTE (long term evolution) terminals and 5G NR terminals supporting 5G non-independent deployment, of course, terminals supporting other network types may also be included; the frequency point information can be frequency points f1 and f 2; frequency point priorities, such as: 0-7, 0 for lowest priority and 7 for highest priority); when the priorities of the two frequency points are the same, when a cell is selected, parameters such as a reselection threshold of the frequency point, a reselection bias value of the frequency point, a reselection hysteresis value, a cell reselection timer and the like are required. Of course, when the priorities of the two frequency points are different, when a cell is selected, parameters such as a cell reselection timer and a reselection threshold of the frequency point may also be considered.

When the network device broadcasts the reselection parameters, for example, when the network device includes a first set of reselection parameters and a second set of reselection parameters, the second set of reselection parameters for the same frequency point may also include only parameters different from the first set of reselection parameters for the frequency point, such as frequency point information and parameters different from other parts; for example, the second set of reselection parameters only includes the frequency point priorities, the rest of the parameter information is respectively the same as that of the first set of reselection parameters, and the second set of reselection parameters may not include those parameters that are the same as that of the first set of reselection parameters.

When the second set of reselection parameters is different from the first set of reselection parameters, after the terminal receives the two sets of reselection parameters, the terminal can overlay the second set of reselection parameters over the first set of reselection parameters, that is, discard the first set of reselection parameters, and adopt the second set of reselection parameters or adopt the frequency point priority to take a larger value to reserve after the union of the two sets of reselection parameters.

In the embodiment, the network side broadcasts reselection parameters including frequency point priorities for different types of terminal cells to be reselected, so that different types of terminals can read reselection parameters matched with the types of the terminals to perform cell reselection, frequency spectrum and network resources are utilized to the maximum extent, in-situ switching is avoided, and increased time delay and signaling overhead are avoided.

Corresponding to the cell reselection method at the terminal side, an embodiment of the present invention further provides a terminal, including: a transceiver for receiving reselection parameters from a network device for use by a plurality of types of terminals;

Wherein the processor is specifically configured to: and if the priority of the frequency point of the measured frequency point is the same as the priority of the frequency point currently residing in the terminal, (Q1-Q-offsetFreq) > (Q2+ P), the terminal reselects the adjacent cell, wherein Q1 is the cell quality of the adjacent cell, Q-offsetFreq is reselection offset, Q2 is the cell quality of the cell on the currently residing frequency point, and P is reselection hysteresis.

Wherein the type of the terminal comprises: a long term evolution, LTE, terminal or a 5G non-independently deployed terminal.

It should be noted that, in the embodiment of the terminal, the method may further include: a memory communicatively coupled to the processor via a bus interface or interfaces, and a transceiver communicatively coupled to the memory via a bus interface or interfaces. The functions of the above-described transceiver may also be implemented by a processor. The terminal of the present invention may further include other components, such as a user interface, for implementing the method, and all implementations in the above method embodiments are applicable to the embodiment of the terminal, so as to achieve the same technical effect. The terminal may be the first type terminal or the second type terminal described in the above embodiments.

Corresponding to the sending method of the reselection parameter of the network device on the network side, an embodiment of the present invention further provides a network device, including:

and the transceiver is used for transmitting reselection parameters used for cell reselection of various types of terminals.

In this embodiment, the various types of terminals may include, for example: LTE (long term evolution) terminals and 5G NR terminals supporting 5G non-independent deployment, of course, terminals supporting other network types may also be included.

The frequency point information can be frequency points f1 and f 2; frequency point priorities, such as: 0-7, 0 for lowest priority and 7 for highest priority);

when the priorities of the two frequency points are the same, when a cell is selected, parameters such as a reselection threshold of the frequency point, a reselection bias value of the frequency point, a reselection hysteresis value, a cell reselection timer and the like are required.

Of course, when the priorities of the two frequency points are different, when a cell is selected, parameters such as a cell reselection timer and a reselection threshold of the frequency point may also be considered.

When the network device broadcasts the reselection parameters, which may include a first set of reselection parameters and a second set of reselection parameters, the second set of reselection parameters for the same frequency point may also include only parameters different from the first set of reselection parameters for the frequency point, such as frequency point information and parameters different from other parts; for example, the second set of reselection parameters only includes the frequency point priorities, the rest of the parameter information is respectively the same as that of the first set of reselection parameters, and the second set of reselection parameters may not include those parameters that are the same as that of the first set of reselection parameters.

In the embodiment, the network side broadcasts reselection parameters including frequency point priorities for different types of terminal cells to reselect, so that different types of terminals can read reselection parameters matched with the types of the terminals to reselect the cells, the frequency spectrum and network resources are utilized to the maximum extent, in-situ switching is avoided, and increased time delay and signaling overhead are avoided.

It should be noted that the network device may be a base station, and the network device may further include: the processor, which is communicatively coupled to the transceiver, may further include a memory communicatively coupled to the transceiver, where the communication coupling may be through a bus interface or an interface communication coupling. The functions of the above-described transceiver may also be implemented by a processor. The network device of the present invention may further include other components for implementing the method, and all the implementation manners in the sending method embodiment of the reselection parameter of the network device are applicable to the embodiment of the terminal, so that the same technical effect can be achieved.

As shown in fig. 2, an embodiment of the present invention further provides a cell reselection method, including:

step 21, receiving parameter information related to cell reselection of a plurality of frequency points, where the parameter information includes: whether the frequency point supports the indication information of the first type network or the second type network or not, or whether the cell supports the indication information of the first type network or the second type network or not;

step 22, according to the parameter information and the network type supported by the terminal, cell reselection is carried out

In this embodiment, if the terminal is a terminal supporting a first type network, step 22 may specifically include: and the terminal reselects the cell supporting the frequency point of the first type network according to the parameter information.

In this embodiment, if the terminal is a terminal supporting the second type network, step 22 may further specifically include: and the terminal reselects the cell supporting the frequency point of the second type network according to the parameter information.

In this embodiment, the first type network is a long term evolution LTE network; the second type network is a 5G non-independent deployment network.

In this embodiment, whether a broadcast frequency point/cell supports 5G non-independent deployment in a system message is determined, and a specific network broadcasts relevant parameter information for measurement (i.e., parameter information related to cell reselection) in the system message, where the parameter information related to measurement includes: frequency point information, cell information under each frequency point, indication information of whether each frequency point supports 5G non-independent deployment, and indication information of whether each cell supports 5G non-independent deployment; the UE receives a system message broadcasted by a network and reads the measured related parameter information; the LTE terminal only reselects to a frequency point/cell which does not support 5G non-independent deployment, or only measures the frequency point/cell which does not support 5G non-independent deployment; and the 5G NR terminal supporting 5G non-independent deployment only reselects the frequency point/cell supporting 5G non-independent deployment, or only measures the frequency point/cell supporting 5G non-independent deployment. The embodiment can also enable different types of terminals to read reselection parameters matched with the types of the terminals to reselect the cell, thereby maximally utilizing frequency spectrum and network resources, avoiding the occurrence of in-situ switching and increasing time delay and signaling overhead.

Corresponding to the method shown in fig. 2, the method for sending the reselection parameter of the network device on the network side includes:

Further, if the terminal is a terminal supporting the first type network, the terminal reselects a cell supporting the frequency point of the first type network according to the parameter information.

In this embodiment, if the terminal is a terminal supporting a second type network, the terminal reselects a cell supporting a frequency point of the second type network according to the parameter information.

In this embodiment, the parameter information related to the measurement (i.e. the parameter information related to the cell reselection) is broadcasted in the system message, and the parameter information related to the measurement includes: frequency point information, cell information under each frequency point, indication information of whether each frequency point supports 5G non-independent deployment, and indication information of whether each cell supports 5G non-independent deployment; the UE receives a system message broadcasted by a network and reads the measured related parameter information; the LTE terminal only reselects to a frequency point/cell which does not support 5G non-independent deployment, or only measures the frequency point/cell which does not support 5G non-independent deployment; and the 5G NR terminal supporting 5G non-independent deployment only reselects the frequency point/cell supporting 5G non-independent deployment, or only measures the frequency point/cell supporting 5G non-independent deployment. The embodiment can also enable different types of terminals to read reselection parameters matched with the types of the terminals to reselect the cell, thereby maximally utilizing frequency spectrum and network resources, avoiding the occurrence of in-situ switching and increasing time delay and signaling overhead.

Corresponding to the method shown in fig. 2, an embodiment of the present invention further provides a terminal, including:

In the embodiment of the terminal, the method may further include: a memory communicatively coupled to the processor via a bus interface or interfaces, and a transceiver communicatively coupled to the memory via a bus interface or interfaces. The functions of the above-described transceiver may also be implemented by a processor. The terminal of the present invention may further include other components, such as a user interface, for implementing the method, and all implementations in the above method embodiments are applicable to the embodiment of the terminal, so as to achieve the same technical effect. The terminal may be the first type terminal or the second type terminal described in the above embodiments.

The network device may be a base station, and the network device may further include: the processor, which is communicatively coupled to the transceiver, may further include a memory communicatively coupled to the transceiver, where the communication coupling may be through a bus interface or an interface communication coupling. The functions of the above-described transceiver may also be implemented by a processor. The network device of the present invention may further include other components for implementing the method, and all the implementation manners in the sending method embodiment of the reselection parameter of the network device are applicable to the embodiment of the terminal, so that the same technical effect can be achieved.

As shown in fig. 3, a communication device 30 of the present invention includes: a processor 32, a memory 33 in which a computer program is stored, which computer program, when being executed by the processor 32, is adapted to carry out the method according to the embodiments described above.

The communication device may further include: the transceiver 31 is communicatively connected to the processor 32 via a bus interface or an interface, and the transceiver 31 and the memory 33 may be communicatively connected via a bus interface or an interface. The functions of the above-described transceiver may also be implemented by a processor. The communication device of the present invention may further comprise other components, such as a user interface, for implementing the method, and all implementations in the above method embodiments are applicable to the embodiment of the communication device, so as to achieve the same technical effect. The communication device may be the terminal described in the above embodiment, or may be the network device described in the above embodiment, such as a base station.

The embodiment of the invention allows the cell reselection parameters aiming at different types of terminals to be broadcast aiming at the same frequency point in the system message, wherein the cell reselection parameters comprise the frequency point priority, the reselection threshold, the reselection offset value and the like; the measurement related parameters seen by different types of UE are different, and the cell reselection criteria adopted by different types of UE are different for cells on the same frequency point, so that the cell reselection requirements of different types of terminals are met, the frequency spectrum and network resources are utilized to the maximum extent, the in-situ switching is avoided, and the increased time delay and signaling overhead are avoided.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

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

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.

Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A cell reselection method is applied to a terminal, and is characterized by comprising the following steps:

2. The cell reselection method of claim 1,

the reselection parameters include: the method comprises the steps of measuring one or more frequency point information by a terminal, and the frequency point priority and the frequency point reselection parameters of the frequency points.

3. The cell reselection method according to claim 2, wherein the reselection parameters at the frequency points include: at least one of a reselection threshold, a reselection bias value, a reselection hysteresis value and a cell reselection timer of the frequency point.

4. The cell reselection method according to claim 3, wherein the step of performing cell reselection according to the reselection parameter matching the type of the terminal comprises:

5. The cell reselection method according to claim 3, wherein the step of performing cell reselection according to the reselection parameter matching the type of the terminal comprises:

when the priority of the frequency point of the measurement frequency point is the same as the priority of the frequency point currently residing in the terminal, if (Q1-Q-OffsetFreq) > (Q2+ P), the terminal reselects to the adjacent cell; wherein, Q1 is the cell quality of the neighboring cell, Q-OffsetFreq is the reselection offset, Q2 is the cell quality of the cell on the current camping frequency point, and P is the reselection hysteresis value.

6. The cell reselection method according to any one of claims 1 to 5, wherein the terminal comprises: a long term evolution, LTE, terminal or a 5G non-independently deployed terminal.

7. A method for sending reselection parameters is applied to network equipment, and is characterized by comprising the following steps:

8. The method according to claim 7, wherein the reselection parameter comprises: the method comprises the steps of measuring one or more frequency point information by a terminal, and the frequency point priority and the frequency point reselection parameters of the frequency points.

9. The method according to claim 8, wherein the reselection parameters at the frequency point include: at least one of a reselection threshold, a reselection bias value, a reselection hysteresis value and a cell reselection timer of the frequency point.

10. A terminal, comprising:

11. The terminal of claim 10, wherein the reselection parameter comprises: the method comprises the steps of measuring one or more frequency point information by a terminal, and the frequency point priority and the frequency point reselection parameters of the frequency points.

12. The terminal of claim 11, wherein the reselection parameters for the frequency points comprise: at least one of a reselection threshold, a reselection bias value, a reselection hysteresis value and a cell reselection timer of the frequency point.

13. The terminal of claim 12, wherein the processor is specifically configured to: when the priority of the frequency point of the measuring frequency point is higher than the priority of the frequency point of the terminal residing currently, in a cell reselection timer of the measuring frequency point, the signal quality of a cell on the measuring frequency point is higher than the reselection threshold of the measuring frequency point, and the terminal reselects the cell on the measuring frequency point; or

14. The terminal of claim 12, wherein the processor is specifically configured to: when the priority of the frequency point of the measurement frequency point is the same as the priority of the frequency point currently residing in the terminal, if (Q1-Q-OffsetFreq) > (Q2+ P), the terminal reselects to the adjacent cell; wherein, Q1 is the cell quality of the neighboring cell, Q-OffsetFreq is the reselection offset, Q2 is the cell quality of the cell on the current camping frequency point, and P is the reselection hysteresis value.

15. The terminal according to any of claims 10 to 14, characterized in that the terminal comprises: a long term evolution, LTE, terminal or a 5G non-independently deployed terminal.

16. A network device, comprising:

17. A method of cell reselection, comprising:

18. The cell reselection method according to claim 17, wherein if the terminal is a terminal supporting a first type network, the step of performing cell reselection according to the parameter information and a network type supported by the terminal comprises:

19. The cell reselection method according to claim 18, wherein if the terminal is a terminal supporting a second type network, the step of performing cell reselection according to the parameter information and a network type supported by the terminal comprises:

20. The cell reselection method of claim 17,

the first type network is a Long Term Evolution (LTE) network;

the second type network is a 5G non-independent deployment network.

21. A method for sending reselection parameters, comprising:

22. A terminal, comprising:

23. The terminal of claim 22, wherein if the terminal is a terminal supporting a first type network, the processor is specifically configured to reselect a cell supporting a frequency point of the first type network according to the parameter information.

24. The terminal of claim 22, wherein if the terminal is a terminal supporting a second type network, the processor is specifically configured to reselect a cell supporting a frequency of the second type network according to the parameter information.

25. A network device, comprising:

26. A communication device, comprising: a processor, a memory storing a computer program which, when executed by the processor, performs the method of any of claims 1 to 6, the method of any of claims 7 to 9, the method of any of claims 17 to 20 or the method of claim 21.

27. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 6, the method of any one of claims 7 to 9, the method of any one of claims 17 to 20, or the method of 21.