JP6926165B2 - Retention cell selection method and equipment - Google Patents

Description

Examples of the present invention relate to the field of communication, particularly to methods and devices for selecting stagnant cells.

Currently, wireless cellular systems have begun to devise ways to extend the frequency of use of cellular systems using the Unlicensed frequency band (eg 2.4 GHz, 5.8 GHz), the main means being licensed access (Licese). Includes two types: Assisted Access (abbreviated as "LAA") and long-term evolution (abbreviated as "LTE") / wireless fidelity (abbreviated as "WiFi") aggregation. The main features of these two types of aggregation means are (1) that the aggregation resource belongs to the unlicensed frequency band and is used only as the auxiliary frequency band of the general licensed frequency band, and (2) the unlicensed frequency. The use of the band is limited not only to the scheduling of the base station, but also to the load of the frequency band, that is, it needs to be by a competitive mechanism to be usable. Therefore, the access time of the terminal is required to be as short as possible as compared with the licensed frequency band, and this makes it possible to fully utilize the unlicensed frequency band resources within a limited time and improve the resource utilization rate.

At this stage, the unlicensed frequency band is still used only as a supplement to the licensed frequency band, for example in LAA technology, the unlicensed frequency band can use the LTE operating mode, but only as a secondary carrier of the licensed frequency band. Can be used. In the future, LAA can use an independent mode of operation like WLAN, in which case the terminal can stay in cells using the licensed frequency band when idle with no data connection, unlicensed. Although it is possible to stay in cells that use the frequency band, access to unlicensed frequency band cells requires listening to and detecting radio channels using a carrier-based protocol (LBT) mechanism. Also, after winning the competition, it is necessary to transmit for a certain period of time like WLAN, then return to the listening state and continue listening to listen to the channel, so it is necessary to listen to the channel like a licensed frequency band cell. Performance such as access delay and packet loss rate cannot be guaranteed. However, since the unlicensed frequency band has advantages such as abundant frequency band resources and a wide bandwidth, the terminal can flexibly select and access a channel of the unlicensed frequency band having good channel conditions. Therefore, how the terminal device flexibly stays in the licensed frequency band cell and the unlicensed frequency band cell is a problem that needs to be solved at present.

An embodiment of the present invention provides a method and apparatus for selecting a retention cell, allowing a terminal device to reside in a licensed frequency band cell or an unlicensed frequency band cell, and between the licensed frequency band and the unlicensed frequency band. , Optimal access performance can be obtained.

In the first aspect, a method for selecting a stagnant cell is provided.
The terminal device measures the licensed frequency band and the unlicensed frequency band based on the setting information, and
The terminal device includes determining a retention cell based on the measurement results of measuring the licensed frequency band and the unlicensed frequency band, and the setting information includes channel signal quality measurement information and / or channel interference level measurement. The channel quality measurement information includes information, wherein the channel quality measurement information includes a reference signal reception power (RSRP) parameter and / or a reference signal reception quality (RSRQ) parameter, and the channel interference level measurement information includes a reception signal strength indicator (RSSI). ) Includes parameters.

In the second aspect, a method for selecting a stagnant cell is provided.
In order for the terminal device to measure the licensed frequency band and the unlicensed frequency band based on the setting information and to determine the retention cell based on the measurement result of measuring the licensed frequency band and the unlicensed frequency band, the network device is used. , Including transmitting the setting information to the terminal device
The setting information includes channel signal quality measurement information and / or channel interference level measurement information, wherein the channel quality measurement information includes a reference signal reception power (RSRP) parameter and / or a reference signal reception quality (RSRQ) parameter. The channel interference level measurement information includes a received signal strength indicator (RSSI) parameter.

In the third aspect, the terminal device is provided.
A measurement module configured to measure licensed and unlicensed frequency bands based on configuration information,
Here, the licensed frequency band of the measurement module and the confirmation module configured to determine the retention cell based on the measurement result of measuring the unlicensed frequency band are included.
The setting information includes channel signal quality measurement information and / or channel interference level measurement information, and the channel quality measurement information includes a reference signal reception power (RSRP) parameter and / or a reference signal reception quality (RSRQ) parameter. The channel interference level measurement information includes a received signal strength indicator (RSSI) parameter.

In the fourth aspect, the network device is provided.
The terminal device measures the license frequency band and the unlicense frequency band based on the setting information, and the terminal device is sent to the terminal device in order to determine the retention cell based on the measurement result of measuring the license frequency band and the unlicensed frequency band. Includes a transmit module configured to transmit configuration information
The setting information includes channel signal quality measurement information and / or channel interference level measurement information, wherein the channel quality measurement information includes a reference signal reception power (RSRP) parameter and / or a reference signal reception quality (RSRQ) parameter. The channel interference level measurement information includes a received signal strength indicator (RSSI) parameter.

Based on the above technical features, in the retention cell selection method and apparatus provided by the embodiment of the present invention, the terminal apparatus measures the licensed frequency band and the unlicensed frequency band based on the setting information, and the measurement result. The retained cell is determined based on the above, whereby the terminal device can be retained in the licensed frequency band cell or the unlicensed frequency band cell, and the optimum access performance is obtained between the licensed frequency band and the unlicensed frequency band. be able to.

It is a schematic flowchart of the method of selecting the retention cell in the Example of this invention. It is another schematic flowchart of the method of selecting the retention cell in the Example of this invention. It is a schematic flowchart of the method of selecting the retention cell in another embodiment of this invention. It is a schematic flowchart of the method of selecting the retention cell in another embodiment of this invention. It is a schematic block diagram of the terminal apparatus in the Example of this invention. It is another schematic block diagram of the terminal apparatus in the Example of this invention. It is another schematic block diagram of the terminal apparatus in the Example of this invention. It is a schematic block diagram of the terminal apparatus in another embodiment of this invention. It is a schematic block diagram of the network apparatus in the Example of this invention. It is a schematic block diagram of the network apparatus in another embodiment of this invention.

In order to more clearly explain the technical proposal of the embodiment of the present invention, the drawings required for the embodiment or the prior art will be briefly described above. Obviously, the drawings described below are only a few embodiments of the present invention, and one of ordinary skill in the art can obtain other drawings based on these drawings without any creative effort.

The drawings in the examples of the present invention are combined below to clearly and completely explain the technical proposal in the examples of the present invention, and the examples clearly described are only a part of the examples of the present invention. , Not all examples. All other examples obtained by those skilled in the art based on the examples of the present invention without any creative effort are within the scope of the present invention.

It should be understood that the technical proposals in the embodiments of the present invention include various communication systems, such as Global System of Mobile Access (GSM) systems, Code Division Multiple Access (CDMA) systems, and Code Division Multiple Access (CDMA) systems. Wideband Code Division Multiple Access (WCDMA) System, Long Term Evolution System, LTE Frequency Division Multiple Access (FDD) Frequency Division Multiple Access System It can be applied to Time Division Duplex () systems, Universal Mobile Communication Systems (UMTS), future 5G communication systems, and the like.

As should be understood, in the embodiment of the present invention, the terminal device (Terminal Equipment) may be referred to as a user device, a mobile station (MS: Mobile Station), a mobile terminal (Mobile Terminal), or the like, and the user device is wireless. It can communicate with one or more core networks via an access network (RAN: Radio Access Network), for example, the user device is a mobile phone (also called a "cellular" phone), a computer with a mobile terminal, etc. It may be, for example, a portable, pocket, handheld, computer-embedded or in-vehicle mobile device, and a terminal device in a future 5G network or a terminal device in a future evolved PLMN network.

Further, it should be understood that, in the embodiment of the present invention, the network device may be a device for communicating with the user device, and the network device may be a base station (BTS: Base Transfer Station) in a GSM system or CDMA. , A base station (NB: NodeB) in a WCDMA system, an evolutionary base station (Evolutional NodeB, abbreviated as "eNB" or "eNodeB") in an LTE system, or the network device is a relay station, an access point. , In-vehicle devices, wearable devices and network-side devices in future 5G networks or network devices in future evolved PLMN networks.

It should be explained that, in the embodiments of the present invention, the licensed frequency band is the frequency band used exclusively for one particular system or specific carrier, and the licensed frequency band is also the "ordinary licensed frequency band" or It may be called a "permitted frequency band". The unlicensed frequency band is a frequency band that can be used free of charge and is allowed to be shared by different systems, and the unlicensed frequency band is "Unlicensed frequency band (for example, 2.4 GHz frequency band, 5. 8 GHz frequency band), however, the scope of protection of the embodiments of the present invention does not limit this name.

FIG. 1 is a schematic flowchart of a method of selecting a stagnant cell according to an embodiment of the present invention, and as shown in FIG. 1, method 100 includes S110 and S120.

In S110, the terminal device measures the licensed frequency band and the unlicensed frequency band based on the setting information, and the setting information includes channel signal quality measurement information and / or channel interference level measurement information, wherein the channel The quality measurement information includes a reference signal reception power RSRP parameter and / or a reference signal reception quality RSRQ parameter, and the channel interference level measurement information includes a reception signal strength indicator RSSI parameter.

In S120, the retention cell is determined based on the measurement result of the terminal device measuring the licensed frequency band and the unlicensed frequency band.

Therefore, in the embodiment of the present invention, the terminal device can measure the licensed frequency band and the unlicensed frequency band based on the setting information, and can select the residence cell based on the measured result, whereby the terminal can be used. The device can stay in the licensed frequency band cell or the unlicensed frequency band cell, and the optimum access performance can be obtained between the licensed frequency band and the unlicensed frequency band.

As a description, in the embodiment of the present invention, the licensed frequency band cell is a cell corresponding to the licensed frequency band, and the unlicensed frequency band cell is a cell corresponding to the unlicensed frequency band, and the licensed frequency band. And measurements for unlicensed frequency bands include measurements for licensed and unlicensed frequency band channels and measurements for licensed and unlicensed frequency band cells.

In the embodiment of the present invention, as an option, the setting information may be transmitted by the network device to the terminal device, and the setting information may be further default setting information of the terminal device itself. The present invention is not limited to this.

As an option, the method 100 further includes S130, as shown in FIG.

In S130, the terminal device receives the setting information transmitted from the network device.

As an option, the terminal device can receive a broadcast message transmitted from the network device, the broadcast message includes the configuration information, where the broadcast message is in the Master Information Block (MIB). It may be a broadcast message carried, or is called a MIB message. The broadcast message may be a broadcast message further carried to a system information block (SIB), or may be called an SIB message, and the broadcast message may be yet another broadcast message. The invention is not limited to this.

Preferably, the broadcast message is an SIB message, which may be, for example, an SIB4 message or an SIB5 message in the current communication standard, or a new SIB message which is different from the newly introduced SIB message in the prior art. , For example, may be named as a SIBX message. Specifically, the network device realizes that the setting information is included in the SIB4 message or the SIB5 message by adding an information element (Information Element, abbreviated as "IE") to the SIB4 message or the SIB5 message in the prior art. And the new SIB message can include the IE corresponding to the configuration information.

In the embodiments of the present invention, as an option, the setting information further includes measurement trigger condition information and / or measurement window information.

Specifically, the measurement trigger condition information may be a measurement cycle, in which case the terminal device can measure the licensed frequency band and the unlicensed frequency band according to the measurement cycle, and the trigger condition information is further obtained. The event that triggers the measurement may be, for example, that the measured value of the licensed frequency band service cell is smaller than the threshold value or that the measured value of the unlicensed frequency band service cell is lower than the threshold value. You may.

The measurement window information indicates the length of each measurement time, and the measurement window may be a fixed time length or a variable time length, for example, of a terminal device. If the previous measurement result is clear, for example, if the Received Signal Strength Indicator (RSSI) is much higher or lower than the threshold, the terminal device may use a short measurement window and the terminal device may use a short measurement window. If the previous measurement result situation is not good, i.e. the channel is complex and, for example, RSSI is close to the threshold, the measurement window can be expanded accordingly.

In the embodiment of the present invention, as an option, the setting information may be set by the core network and may be transmitted to the terminal device via non-access layer (NAS) signaling. That is, the terminal device receives the non-access layer NAS signaling transmitted from the core network device, and the NAS signaling includes the setting information.

Preferably, in S110, the setting information further includes frequency band priority information, and the frequency band priority information is used to indicate an order in which different frequency bands can be set as the retention frequency band of the terminal device.

Specifically, the frequency band priority information specifically indicates the priority of the licensed frequency band and the unlicensed frequency band, and the priority of each unlicensed frequency band in the unlicensed frequency band.

In response to this, when the frequency band priority information indicates that the priority of the unlicensed frequency band is higher than the priority of the licensed frequency band, in S120, specifically, among the unlicensed frequency bands. The RSSI value of the first unlicensed frequency band is lower than the first preset threshold, and the RSRP value and / or of the unlicensed frequency band cell of at least one of the unlicensed frequency band cells corresponding to the first unlicensed frequency band. When it is determined that the RSRQ value is higher than the second preset threshold value, the unlicensed frequency band cell having the highest quality among the at least one unlicensed frequency band cell is determined as the retention cell.

That is, when the frequency band priority is set and the unlicensed frequency band priority is higher than the licensed frequency band priority, the frequency band channel is selected and the cell is reselected according to the following flow and the corresponding parameter. A certain unlicensed frequency band RSSI quality including information such as RSSI average value and RSSI occurrence probability measured by a terminal is lower than the threshold A1 and the reference signal power (RSRP: Reference Signal Receiving) of at least one cell at the frequency. If the Power) / Reference Signal Quality (RSRQ) value is higher than the threshold B1, it is determined that the terminal device can select and stay in the frequency band and the cell, and if not, the terminal device. If the RSRP / RSRQ value of only one cell of the cells corresponding to the unlicensed frequency band is higher than the threshold value B1 because the frequency band cannot be selected and stayed, the cell is regarded as a staying cell. When the RSRP / RSRQ value of a plurality of cells corresponding to the unlicensed frequency band is higher than the threshold value B1, any one of the plurality of cells is confirmed as a retention cell. Preferably, the cell having the best quality among the plurality of cells is determined as the retention cell.

As an option, when the frequency band priority information indicates that the priority of the unlicensed frequency band is lower than the priority of the licensed frequency band, in S120, the license frequency band specifically corresponding to the licensed frequency band is used. The RSRP value and / or RSRQ value of the cell is lower than the third preset threshold, and the RSSI value of the second unlicensed frequency band of the unlicensed frequency bands is lower than the fourth preset threshold, and the second unlicensed frequency. When it is determined that the RSRP value and / or RSRQ value of at least one unlicensed frequency band cell among the unlicensed frequency band cells corresponding to the band is higher than the fifth preset threshold value, the at least one unlicensed frequency band cell is determined. Of these, the best quality unlicensed frequency band cell is determined as the stagnant cell.

That is, when the frequency band priority is set and the unlicensed frequency band priority is lower than the licensed frequency band priority, the frequency band channel is selected and the cell is reselected according to the following flow and the corresponding parameter. The RSRP / RSRQ values of all cells in the licensed frequency band of the terminal device are lower than the threshold value C2, and the RSSI quality of a certain unlicensed frequency band including information such as RSSI average value and RSSI occurrence probability measured by the terminal is determined. When the RSRP / RSRQ value of at least one cell in the cell corresponding to the unlicensed frequency band is lower than the threshold value A2 and higher than the threshold value B2, the terminal device can select and stay in the frequency band and the cell. Otherwise, the terminal cannot select and stay in the frequency band. When the RSRP / RSRQ value of only one cell corresponding to the unlicensed frequency band is higher than the threshold value B2, the cell is determined as a staying cell, and among the cells corresponding to the unlicensed frequency band. When the RSRP / RSRQ value of the plurality of cells is higher than the threshold value B2, one cell of the plurality of cells can be determined as a retention cell, preferably the quality of the plurality of cells. The best cell is determined as the retention cell.

As an option, when the frequency band priority information indicates that the priority of the unlicensed frequency band is equal to the priority of the licensed frequency band, in S120, the license frequency band specifically corresponding to the licensed frequency band is used. The RSRP value and / or RSRQ value of the cell is lower than the 6th preset threshold, and the RSSI value of the 3rd unlicensed frequency band of the unlicensed frequency bands is lower than the 7th preset threshold, and the 3rd unlicensed frequency. When it is determined that the RSRP value and / or RSRQ value of at least one unlicensed frequency band cell among the unlicensed frequency band cells corresponding to the band is higher than the eighth preset threshold value, the at least one unlicensed frequency band cell is determined. Of these, the best quality unlicensed frequency band cell is determined as the stagnant cell.

That is, when the frequency band priority is set and the unlicensed frequency band priority is equal to the licensed frequency band priority, the frequency band channel is selected and the cell is reselected according to the following flow and the corresponding parameter. The RSRP / RSRQ values of all cells in the licensed frequency band of the terminal device are lower than the threshold value C3, and the RSSI quality of a certain unlicensed frequency band including information such as RSSI average value and RSSI occurrence probability measured by the terminal is determined. If the RSRP / RSRQ value of at least one cell in the frequency band is lower than the threshold value A3 and higher than the threshold value B3, the terminal device can select and stay in the frequency band and the cell, otherwise the terminal. The device cannot select and stay in the frequency band. When the RSRP / RSRQ value of only one cell corresponding to the unlicensed frequency band is higher than the threshold value B3, the cell is determined as a staying cell, and among the cells corresponding to the unlicensed frequency band. When the RSRP / RSRQ value of the plurality of cells is higher than the threshold value B3, one cell of the plurality of cells can be determined as a retention cell, and the quality of the plurality of cells is preferable. The best cell is determined as the retention cell.

As an option, when the frequency band priority is not set, in S120, the RSRP value and / or RSRQ value of the license frequency band cell corresponding to the license frequency band is lower than the ninth preset threshold value, and the unlicensed. The RSSI value of the 4th unlicensed frequency band in the frequency band is lower than the 10th preset threshold value, and the unlicensed frequency band cell of at least one of the unlicensed frequency band cells corresponding to the 4th unlicensed frequency band When it is determined that the RSRP value and / or the RSRQ value is higher than the eleventh preset threshold value, the best quality unlicensed frequency band cell among the at least one unlicensed frequency band cell is determined as the retention cell. be.

That is, when the frequency band priority is not set, the frequency band priority is set and the frequency as described above is based on the flow corresponding to the flow when the unlicensed frequency band priority is lower than the licensed frequency band priority. Band channel selection and cell reselection can be performed.

It should be understood that the relevant thresholds described above may be any reasonable value set based on actual experience, and the present invention is not limited thereto. Moreover, the above-mentioned "first", "second" and the like are only for differentiating purposes, and the configuration of the parameters described therein is not limited.

It should be explained that, in the embodiment of the present invention, the cell quality can be determined based on the overall result of the cell RSRQ, the cell RSRP, the cell interference level, and the above parameters. Does not limit this.

Further, the terminal device according to the embodiment of the present invention further selects the retained cells in consideration of the reselection rule of staying in the unlicensed frequency band cells only when it cannot be retained in all the licensed frequency band cells. In this case, the probability of accessing the unlicensed frequency band cell of the terminal device can be adjusted by adjusting the threshold value.

In the embodiment of the present invention, as an option, the terminal device can measure the licensed frequency band or the unlicensed frequency band by a method of continuously measuring the licensed frequency band or the unlicensed frequency band for a certain period of time or a certain number of times, and accordingly. When cell reselection is performed based on the measurement result, the terminal device can make a determination based on the time or the number of times or the probability that the measurement result exceeds the threshold value, and the present invention is not limited thereto.

In the embodiments of the present invention, as an option, the setting information further includes reselection rule information.
Correspondingly, in S120, the retention cell is determined based on the result of specifically measuring the licensed frequency band and the unlicensed frequency band and the above-mentioned reselection rule information.

As an option, the reselection rule information includes a reselection offset amount and a reselection threshold for the unlicensed frequency band, and a reselection offset amount and one or more reselections for one or more unlicensed frequency bands. A threshold can be set.

Specifically, the reselection offset amount of the unlicensed frequency band can include the offset amount Qoffset of RSRQ / RSRQ and / or the offset amount Woffset of RSSI. And / or Woffset may be taken into account, and the selectable values of the reselection offset amount may be -3dB, -2dB, -1dB, 0dB, 1dB, 2dB, 3dB, etc., for example, Considering Woffset. When placed in, the terminal device can determine the stagnant cell according to the following flow. Within a certain period (timer) or satisfying a certain number of times (N), the signal quality of the unlicensed frequency band cell is higher than the sum of the threshold value 1 and Woffset, and the signal quality of the licensed frequency band cell is the threshold value 2. If it is lower and the RSSI of the unlicensed frequency band meets the requirements for occupancy and average signal strength, the unlicensed frequency band cell corresponding to the unlicensed frequency band can be selected as the retention cell or is constant. Under the timer condition and / or when a certain number of times (N) is satisfied, the signal quality of the unlicensed frequency band cell is higher than the sum of the signal quality of the licensed frequency band cell and Woffset, and the cell signal quality of the licensed frequency band is high. If the RSSI of the unlicensed frequency band is lower than the threshold value 2 and satisfies the occupancy rate and signal intensity average value requirements, the unlicensed frequency band cell corresponding to the unlicensed frequency band can be selected as the retention cell.

The method of selecting the retention cell in the embodiment of the present invention will be described in detail below by combining specific examples. It should be noted that these examples only allow one of ordinary skill in the art to better understand the embodiments of the present invention and do not limit the scope of the embodiments of the present invention.

FIG. 3 is a schematic flowchart of a method of selecting a stagnant cell according to another embodiment of the present invention, and as shown in FIG. 3, the method 200 includes S201 to S203.

In S201, the base station (eNB) transmits a broadcast message to the terminal device (UE),
Specifically, the broadcast message transmitted from the base station can include setting information.

In S202, the terminal device measures the licensed frequency band and the unlicensed frequency band based on the broadcast message transmitted from the base station.

In S203, the terminal device reselects the cell based on the result of measuring the licensed frequency band and the unlicensed frequency band, and determines the retained cell.

Therefore, in the embodiment of the present invention, the terminal device can measure the licensed frequency band and the unlicensed frequency band based on the setting information, and can also select the retention cell based on the measurement result, whereby the terminal device can be selected. Can stay in the licensed frequency band cell or the unlicensed frequency band cell, and the optimum access performance can be obtained between the licensed frequency band and the unlicensed frequency band.

The method of selecting the retention cell in the embodiment of the present invention will be described in detail from the terminal device side by combining FIGS. 1 to 3 above, and the present invention will be described below by combining FIGS. 4 and 5 from the network device side. The method of selecting the stagnant cell in the embodiment will be explained in detail, and it should be understood that the interaction between the network device and the terminal device, the related characteristics, the functions, etc. explained from the terminal device side correspond to the description on the base station side. , For the sake of simplicity, omit duplicate explanations appropriately.

FIG. 4 is a schematic flowchart of a method of selecting a stagnant cell according to another embodiment of the present invention, and as shown in FIG. 4, the method 300 includes S310.

In S310, the terminal device measures the licensed frequency band and the unlicensed frequency based on the setting information, and the network is used to determine the retention cell based on the result of measuring the licensed frequency band and the unlicensed frequency band. The device transmits the setting information to the terminal device.

Here, the setting information includes channel signal quality measurement information and / or channel interference level measurement information, and here, the channel quality measurement information includes a reference signal reception power RSRP parameter and / or a reference signal reception quality RSRQ parameter. The channel interference level measurement information includes a received signal strength indicator RSSI parameter.

Therefore, in the embodiment of the present invention, the terminal device measures the licensed frequency band and the unlicensed frequency based on the setting information, and the retention cell is selected based on the result of measuring the licensed frequency band and the unlicensed frequency band. To be able, the network sends configuration information to the terminal device, which allows the terminal device to stay in the licensed frequency band cell or the unlicensed frequency band cell, and also the licensed frequency band and the unlicensed frequency. Optimal access performance can be obtained between the bands.

As an option, in S310, the setting information further includes frequency band priority information, and the frequency band priority information is used to indicate the order in which different frequency bands can be set as the retention frequency band of the terminal device.

As an option, in S310, in order to determine the retention cell based on the result of the terminal device measuring the licensed frequency band and the unlicensed frequency band and the reselection rule information, the setting information uses the reselection rule information. Including further.

In an embodiment of the present invention, as an option, the reselection rule information includes a reselection offset amount and / or a reselection threshold of an unlicensed frequency band.

As an option, in S310, a broadcast message is specifically transmitted to the terminal device, and the broadcast message includes setting information.

In an embodiment of the invention, as an option, the network device can transmit a system information block SIB message to the terminal device. As an option, the SIB message is a SIB4 message or a SIB5 message.

As an option, in S310, the setting information further includes measurement trigger condition information and / or measurement window information.

Therefore, in the embodiment of the present invention, the network device is a terminal because the terminal device can measure the licensed frequency band and the unlicensed frequency based on the setting information and select the retention cell based on the measurement result. The setting information is transmitted to the device, whereby the terminal device can stay in the licensed frequency band cell or the unlicensed frequency band cell, and obtain the optimum access performance between the licensed frequency band and the unlicensed frequency band. be able to.

FIG. 5 is a schematic block diagram of a terminal device according to an embodiment of the present invention, and as shown in FIG. 5, the terminal device 10 is
A measurement module 11 configured to measure the licensed frequency band and the unlicensed frequency band based on the setting information,
The measurement module 11 includes a determination module 12 configured to determine the retention cell based on the measurement result of measuring the licensed frequency band and the unlicensed frequency band.
The setting information includes channel signal quality measurement information and / or channel interference level measurement information, wherein the channel quality measurement information includes a reference signal reception power RSRP parameter and / or a reference signal reception quality RSRQ parameter. The channel interference level measurement information includes a received signal strength indicator RSSI parameter.

Therefore, the terminal device in the embodiment of the present invention can measure the licensed frequency band and the unlicensed frequency band based on the setting information, and can select the stagnant cell based on the measurement result, whereby the terminal device can be used. It can stay in the licensed frequency band cell or the unlicensed frequency band cell, and the optimum access performance can be obtained between the licensed frequency band and the unlicensed frequency band.

In the embodiment of the present invention, as an option, the setting information further includes frequency band priority information, and the frequency band priority information indicates an order in which different frequency bands can be set as the retention frequency band of the terminal device. Used for.

In the embodiment of the present invention, as an option, the frequency band priority information indicates that the priority of the unlicensed frequency band is higher than the priority of the licensed frequency band.
Here, in determining the retention cell based on the measurement results obtained by measuring the licensed frequency band and the unlicensed frequency band, the determination module 12 specifically
The RSSI value of the first unlicensed frequency band in the unlicensed frequency band is lower than the first preset threshold value, and the unlicensed frequency of at least one of the unlicensed frequency band cells corresponding to the first unlicensed frequency band. When it is determined that the RSRP value and / or RSRQ value of the band cell is higher than the second preset threshold value, the unlicensed frequency band cell having the best quality among the at least one unlicensed frequency band cell is determined as the retention cell. It is configured to.

In an embodiment of the invention, as an option, the frequency band priority information indicates that the priority of the unlicensed frequency band is lower than the priority of the licensed frequency band.
Here, in determining the retention cell based on the measurement results obtained by measuring the licensed frequency band and the unlicensed frequency band, the determination module 12 specifically
The RSRP value and / or RSRQ value of the license frequency band cell corresponding to the license frequency band is lower than the third preset threshold, and the RSSI value of the second unlicensed frequency band of the unlicensed frequency bands is the fourth preset threshold. When it is determined that the RSRP value and / or RSRQ value of at least one unlicensed frequency band cell among the unlicensed frequency band cells corresponding to the second unlicensed frequency band is higher than the fifth preset threshold value. , The unlicensed frequency band cell having the highest quality among the at least one unlicensed frequency band cell is configured to be determined as the stagnant cell.

In an embodiment of the invention, as an option, the frequency band priority information indicates that the priority of the unlicensed frequency band is equal to the priority of the licensed frequency band.
Here, in determining the retention cell based on the measurement results obtained by measuring the licensed frequency band and the unlicensed frequency band, the determination module 12 specifically
The RSRP value and / or RSRQ value of the license frequency band cell corresponding to the license frequency band is lower than the sixth preset threshold, and the RSSI value of the third unlicensed frequency band of the unlicensed frequency bands is the seventh preset threshold. When it is determined that the RSRP value and / or RSRQ value of at least one unlicensed frequency band cell among the unlicensed frequency band cells corresponding to the third unlicensed frequency band is higher than the eighth preset threshold value. , The unlicensed frequency band cell having the highest quality among the at least one unlicensed frequency band cell is configured to be determined as the stagnant cell.

In the embodiment of the present invention, as an option, the determination module 12 specifically determines the retention cell based on the measurement results of measuring the licensed frequency band and the unlicensed frequency band.
The RSRP value and / or RSRQ value of the license frequency band cell corresponding to the license frequency band is lower than the 9th preset threshold, and the RSSI value of the 4th unlicensed frequency band of the unlicensed frequency band is the 10th preset threshold. When it is determined that the RSRP value and / or RSRQ value of at least one unlicensed frequency band cell among the unlicensed frequency band cells corresponding to the fourth unlicensed frequency band is higher than the eleventh preset threshold value. , The unlicensed frequency band cell having the highest quality among the at least one unlicensed frequency band cell is configured to be determined as the stagnant cell.

In the embodiment of the present invention, the setting information further includes reselection rule information.
Here, in determining the retention cell based on the measurement results obtained by measuring the licensed frequency band and the unlicensed frequency band, the determination module 12 specifically
It is configured to determine the retention cell based on the measurement result of measuring the licensed frequency band and the unlicensed frequency band and the reselection rule information.

In an embodiment of the present invention, as an option, the reselection rule information includes a reselection offset amount and / or a reselection threshold of an unlicensed frequency band.

In the embodiment of the present invention, as an option, as shown in FIG. 6, the terminal device is
A first receiving module 13 configured to receive the setting information transmitted from the network device is further included.

In the embodiment of the present invention, as an option, the first receiving module 13 specifically receives the measurement setting information transmitted from the network device.
It is configured to receive the system information block SIB message transmitted from the network device, and the SIB message includes the setting information.

In the embodiment of the present invention, as an option, in receiving the system information block SIB message transmitted from the network device, the first receiving module 13 specifically
It is configured to receive the SIB4 message or SIB5 transmitted from the network device.

In the embodiment of the present invention, as an option, as shown in FIG. 7, the terminal device is
The second receiving module 14 is configured to receive the non-access layer NAS signaling transmitted from the core network apparatus, and the NAS signaling further includes the setting information.

In the embodiments of the present invention, as an option, the setting information further includes measurement trigger condition information and / or measurement window information.

Therefore, the terminal device in the embodiment of the present invention can measure the licensed frequency band and the unlicensed frequency band based on the setting information, and can select the retention cell based on the measurement result, whereby the terminal device is licensed. It can stay in the frequency band cell or the unlicensed frequency band cell, and the optimum access performance can be obtained between the licensed frequency band and the unlicensed frequency band.

It should be noted that in the embodiments of the present invention, the measurement module 11 and the confirmation module 12 may be realized by the processor, and the first receiving module 13 and the second receiving module 14 may be realized by the receiver. As shown in FIG. 8, the terminal device 100 can include a processor 101, a receiver 102, and a memory 103. Here, the memory 103 may be configured to store a code or the like executed by the processor 101, and the processor 101 controls the receiver 102 so as to execute the code stored in the memory 203 and receive a signal. It is configured to.

Each component in the terminal device 100 is coupled via a bus system 104, where the bus system 104 includes a power bus, a control bus and a status signal bus in addition to the data bus.

The terminal device 10 shown in FIGS. 5 to 7 and the terminal device 100 shown in FIG. 8 can realize each of the realized processes in the embodiment of the methods shown in FIGS. 1 and 2, in order to avoid duplication. , The description is omitted here.

FIG. 9 is a schematic block diagram of a network device according to an embodiment of the present invention. As shown in FIG. 9, the network device 20 is
The terminal device measures the licensed frequency band and the unlicensed frequency based on the setting information, and is set in the terminal device in order to determine the retention cell based on the result of measuring the licensed frequency band and the unlicensed frequency band. Includes a transmit module 21 configured to transmit information
Here, the setting information includes channel signal quality measurement information and / or channel interference level measurement information, and here, the channel quality measurement information includes a reference signal reception power RSRP parameter and / or a reference signal reception quality RSRQ parameter. , The channel interference level measurement information includes a received signal strength indicator RSSI parameter.

Therefore, in the network device according to the embodiment of the present invention, the terminal device can measure the licensed frequency band and the unlicensed frequency based on the setting information, and the retention cell can be selected based on the measurement result. By transmitting the setting information, the terminal device can stay in the licensed frequency band cell or the unlicensed frequency band cell, and the optimum access performance can be obtained between the licensed frequency band and the unlicensed frequency band. ..

In the embodiment of the present invention, as an option, the setting information further includes frequency band priority information, and the frequency band priority information indicates an order in which different frequency bands can be set as the retention frequency band of the terminal device. Used for.

In the embodiment of the present invention, as an option, the setting information is reselected so that the terminal device determines the retention cell based on the measurement result of measuring the licensed frequency band and the unlicensed frequency and the reselection rule information. Rule information Includes more information.

In an embodiment of the present invention, as an option, the reselection rule information includes a reselection offset amount and / or a reselection threshold of an unlicensed frequency band.

In the embodiment of the present invention, as an option, in transmitting the setting information to the terminal device, the transmission module 11 specifically
It is configured to send a broadcast message to the terminal device, and the broadcast message includes the setting information.

In the embodiment of the present invention, as an option, in transmitting a broadcast message to the terminal device, the transmission module 11 specifically
It is configured to send a system information block SIB message to the terminal device.

In the embodiment of the present invention, as an option, in transmitting a system information block SIB message to the terminal device, the transmission module 11 specifically
It is configured to transmit a SIB4 message or a SIB5 message to the terminal device.

In the embodiments of the present invention, as an option, the setting information further includes measurement trigger condition information and / or measurement window information.

Therefore, the network device in the embodiment of the present invention is a terminal device because the terminal device can measure the licensed frequency band and the unlicensed frequency based on the setting information and select the retention cell based on the measurement result. By transmitting the setting information to, the terminal device can stay in the licensed frequency band cell or the unlicensed frequency band cell, and the optimum access performance can be obtained between the licensed frequency band and the unlicensed frequency band. can.

Note that in the embodiments of the present invention, the transmitter module 11 may be implemented by a transmitter. As shown in FIG. 10, the network device 200 can include a processor 201, a transmitter 202, and a memory 203. Here, the memory 203 may be configured to store a code or the like executed by the processor 201, and the processor 201 controls the transmitter 202 so as to execute the code stored in the memory 203 and transmit a signal. It is configured to.

Each component in the network device 200 is coupled via a bus system 204, which includes a power bus, a control bus and a state signal bus in addition to the data bus.

The network device 20 shown in FIG. 9 and the network device 200 shown in FIG. 10 can realize each process realized in the embodiment of the method in FIG. 4, and the description thereof is omitted here in order to avoid duplication. do.

Those skilled in the art can combine the units and algorithmic steps of each example described in the embodiments disclosed herein to achieve electronic hardware, or the combination of computer software and electronic hardware. I understand that I can do it. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the proposed technology. Those skilled in the art can realize the functions described using different methods for each particular application, but such realizations should not be considered beyond the scope of the present invention.

For convenience and simplification of description, those skilled in the art can refer to the corresponding processes in the embodiments of the above methods for the specific operating processes of the systems, devices and units described above. The above is not explained, but it can be clearly understood.

In some of the embodiments provided by this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the above-described embodiment of the device is merely exemplary. For example, the division of the units is limited to logical functional division, and there may be other divisions when actually implementing the units. For example, a plurality of units. Alternatively, the components may be combined or integrated into another system, or some technical features may be ignored or may not be implemented. Also, the interconnected or directly coupled or communication connections of the components shown or discussed may be connected by indirect coupling or communication of several interfaces, devices or units, electrically. It may be in mechanical or other form.

The unit described above as a separate component may or may not be physically separate, and the component displayed as a unit is a physical unit. It may or may not be a physical unit, may be located in one location, or may be distributed to multiple network units. Some or all of the units can be selected according to the actual needs to achieve the purpose of the technical proposal of this embodiment.

Further, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may be a single unit, and two or more units may be integrated into one unit. May be done.

When the function is realized in the form of a software function unit and sold or used as an independent product, it may be stored in one computer-readable storage medium.
Based on this understanding, the technical proposal of the embodiment of the present invention can be realized in the form of a software product, in other words, a portion contributing to the prior art, the computer software product is stored in a storage medium, and the computer software is stored. The product is a memory that includes several commands for causing a computer device (which may be a personal computer, server, network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. Stored in the medium. The storage medium includes various media such as a USB memory, a mobile hard disk, a read-only memory (ROM: Read-Only Memory), a random access memory (RAM: Random Access Memory), a magnetic disk, or an optical disk that can store a program code.

The above is only an optimum embodiment of the present invention, the present invention is not limited to the examples, and within the scope disclosed in the present invention, modifications or replacements that can be easily conceived by those skilled in the art can be made. All should be included within the scope of the present invention. Therefore, the scope of the present invention should conform to the stated claims.

Claims (15)

A method of selecting and reselecting cells related to stagnant cells.
The idle terminal device is to measure the licensed frequency band and the unlicensed frequency band based on the setting information, and the setting information includes the setting of the signal quality measurement and / or the setting of the interference level measurement. The signal quality measurement setting includes at least one of a reference signal reception power (RSRP) measurement setting and a reference signal reception quality (RSRQ) measurement setting, and the interference level measurement setting includes a reception signal strength indicator. (RSSI) Including measurement settings and
The RSRP value and / or RSRQ value of the license frequency band cell corresponding to the license frequency band is lower than the 9th preset threshold, and the RSSI value of the 4th unlicensed frequency band of the unlicensed frequency band is the 10th preset threshold. When it is determined that the RSRP value and / or RSRQ value of at least one unlicensed frequency band cell among the unlicensed frequency band cells corresponding to the fourth unlicensed frequency band is higher than the eleventh preset threshold value. The unlicensed frequency band cell having the highest quality among the at least one unlicensed frequency band cell is determined as the staying cell.
A method for selecting and reselecting a cell with respect to the stagnant cell, which comprises. The cell selection and reselection method for a staying cell according to claim 1, wherein the setting information further includes reselection rule information. The cell selection and reselection method for a retention cell according to claim 2, wherein the reselection rule information includes a reselection offset amount and / or a reselection threshold value of an unlicensed frequency band. The method is
The cell selection and reselection method for a retention cell according to any one of claims 1 to 3, wherein the terminal device further includes receiving the setting information transmitted from the network device. Receiving the setting information transmitted from the network device is
The SIB message includes receiving the system information block SIB message transmitted from the network device, and the SIB message includes the setting information.
Receiving the system information block SIB message transmitted from the network device is
It is characterized by including receiving a SIB4 message or a SIB5 message transmitted from the network device.
The method for selecting and reselecting a cell with respect to the retention cell according to claim 4. The method is
The invention according to any one of claims 1 to 3, further comprising receiving the non-access layer NAS signaling transmitted from the core network device, and the NAS signaling including the setting information. How to select and reselect cells for stagnant cells. The method for selecting and reselecting a cell with respect to a retention cell according to any one of claims 1 to 6, wherein the setting information further includes measurement trigger condition information and / or measurement window information. The cell selection for a retention cell according to claim 7, wherein the measurement window information includes a fixed time length and a variable time length, indicating the time length of each measurement. And how to reselect. The cell selection and reselection method for a retention cell according to claim 1, further comprising measuring the licensed frequency band and the unlicensed frequency band for a certain period of time or a certain number of times. A method of selecting and reselecting cells related to stagnant cells.
In order for the terminal device to measure the licensed frequency band and the unlicensed frequency band based on the setting information and to determine the retention cell based on the measurement result of measuring the licensed frequency band and the unlicensed frequency band, the network device is used. Including transmitting the setting information to the terminal device
The setting information includes a signal quality measurement setting and / or an interference level measurement setting, and the signal quality measurement setting includes a reference signal reception power (RSRP) measurement setting and a reference signal reception quality (RSRQ) measurement setting. The interference level measurement settings include at least one of the received signal strength indicator (RSSI) measurement settings.
After receiving the setting information from the network device, the RSRP value and / or RSRQ value of the license frequency band cell corresponding to the license frequency band is lower than the ninth preset threshold value, and the fourth of the unlicensed frequency bands. The RSSI value of the unlicensed frequency band is lower than the 10th preset threshold value, and the RSRP value and / or RSRQ value of at least one unlicensed frequency band cell among the unlicensed frequency band cells corresponding to the 4th unlicensed frequency band. When it is determined that is higher than the eleventh preset threshold, the best quality unlicensed frequency band cell among the at least one unlicensed frequency band cell is determined as the retention cell.
A method for selecting and reselecting a cell with respect to the stagnant cell. The cell selection and reselection method for a retention cell according to claim 10, wherein the licensed frequency band and the unlicensed frequency band are measured for a fixed period or a fixed number of times. It ’s a terminal device,
A measurement module configured to measure a licensed frequency band and an unlicensed frequency band based on the setting information, the setting information including setting of signal quality measurement and / or setting of interference level measurement, said signal. The quality measurement setting includes at least one of a reference signal reception power (RSRP) measurement setting and a reference signal reception quality (RSRQ) measurement setting, and the interference level measurement setting includes a reception signal strength indicator (RSSI). ) Measurement modules, including measurement settings,
The RSRP value and / or RSRQ value of the license frequency band cell corresponding to the license frequency band is lower than the 9th preset threshold, and the RSSI value of the 4th unlicensed frequency band of the unlicensed frequency band is the 10th preset threshold. When it is determined that the RSRP value and / or RSRQ value of at least one unlicensed frequency band cell among the unlicensed frequency band cells corresponding to the fourth unlicensed frequency band is higher than the eleventh preset threshold value. , the terminal apparatus characterized by comprising: a configured deterministic module to determine the best residence an unlicensed frequency band cell fraction cell quality of the at least one unlicensed frequency band cell. The terminal device according to claim 12, wherein the determination module is further configured to measure the licensed frequency band and the unlicensed frequency band for a certain period of time or a certain number of times. It ’s a network device,
The terminal device measures the licensed frequency band and the unlicensed frequency band based on the setting information, and based on the measurement result of measuring the licensed frequency band and the unlicensed frequency band, the terminal device is sent to the terminal device in order to determine the retention cell. Includes a transmit module configured to transmit the configuration information
The setting information includes a signal quality measurement setting and / or an interference level measurement setting, and the signal quality measurement setting includes a reference signal reception power (RSRP) measurement setting and a reference signal reception quality (RSRQ) measurement setting. The interference level measurement settings include at least one of the received signal strength indicator (RSSI) measurement settings.
After receiving the setting information from the network device, the RSRP value and / or RSRQ value of the license frequency band cell corresponding to the license frequency band is lower than the ninth preset threshold value, and the fourth of the unlicensed frequency bands. The RSSI value of the unlicensed frequency band is lower than the 10th preset threshold value, and the RSRP value and / or RSRQ value of at least one unlicensed frequency band cell among the unlicensed frequency band cells corresponding to the 4th unlicensed frequency band. When it is determined that is higher than the eleventh preset threshold, the best quality unlicensed frequency band cell among the at least one unlicensed frequency band cell is determined as the retention cell.
The network device. The network device according to claim 14, wherein the licensed frequency band and the unlicensed frequency band are measured for a certain period of time or a certain number of times.

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