CN106255122B

CN106255122B - Communication method and communication device

Info

Publication number: CN106255122B
Application number: CN201610819331.7A
Authority: CN
Inventors: 李明菊; 朱亚军; 张云飞
Original assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Current assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Priority date: 2016-09-09
Filing date: 2016-09-09
Publication date: 2022-12-20
Anticipated expiration: 2036-09-09
Also published as: CN106255122A; WO2018045680A1

Abstract

The invention provides a communication method and a communication device, wherein the communication method comprises the following steps: configuring at least one service cell to each terminal, wherein each service cell works on an unauthorized carrier; selecting at least one serving cell as a primary cell or a primary and secondary cell of each terminal to form a primary cell group or a primary and secondary cell group of each terminal; and communicating with each terminal through the main cell group or the main auxiliary cell group. The technical scheme of the invention can improve the signal transmission probability on the main cell group or the main and auxiliary cell groups on the unauthorized frequency band, thereby ensuring that the main cell group or the main and auxiliary cell groups can effectively transmit and receive necessary information and data in time and meeting the requirements on time delay and efficiency of communication.

Description

Communication method and communication device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a communication method and a communication apparatus.

Background

With the dramatic increase in communication traffic, the 3GPP licensed spectrum appears to be less and less sufficient to provide higher network capacity. Therefore, 3GPP proposes a concept of LTE Assisted Access (LAA) for using unlicensed spectrum with the help of LTE licensed spectrum, and the LAA scheme is based on a function of carrier aggregation to deploy an LTE system in an unlicensed frequency band.

Meanwhile, the unlicensed spectrum may have two working modes, one is Supplementary Downlink (SDL), that is, only Downlink transmission subframes; the other is TDD mode, which includes both downlink subframes and uplink subframes. Supplementary downlink this case can only be used by means of carrier aggregation techniques. The TDD mode may be used by using a Dual Connectivity (DC) technique, or may be used independently.

The existing scheme only discusses various problems when the unlicensed spectrum and the LTE licensed spectrum work in a carrier aggregation mode, and does not discuss the problems when the LTE licensed spectrum works in a dual-connection mode. In many cases, the connection between the base station deployed by the unlicensed spectrum and the base station where the licensed spectrum is located is not ideal, and only a dual-connection mode can be used. In case of dual connectivity, the SeNB (Secondary eNB, secondary base station) needs to have a PSCell (Primary Secondary cell) to provide partial functions of the PCell (Primary cell), such as MIB (Master Information Block) transmission, PDCCH (Physical Downlink Control Channel) and PUCCH (Physical Uplink Control Channel) Control, random access procedure Control, RLM (Radio Link Monitoring) Control, and the like. However, in LAA, that is, in a carrier aggregation operating mode, cells on an unlicensed spectrum do not have or only have weak functions, and the validity of the PSCell cannot be guaranteed.

In addition, on the unlicensed spectrum, a PCell operating on the unlicensed carrier may also be deployed, that is, a cell on the unlicensed spectrum operates independently (i.e., standby), so as to implement control over communication.

Based on the two situations, how to ensure that the PSCell or PCell on the unlicensed frequency band can timely and effectively transmit and receive necessary information and data becomes a technical problem to be solved urgently, and ensuring the time delay and efficiency of communication.

Disclosure of Invention

The present invention is based on at least one of the above technical problems, and provides a new communication scheme, which can improve the signal transmission probability on the main cell group or the main and auxiliary cell groups in the unlicensed frequency band, thereby ensuring that the main cell group or the main and auxiliary cell groups can effectively transmit and receive necessary information and data in time, and meeting the requirements of communication delay and efficiency.

In view of the above, according to a first aspect of the present invention, a communication method is provided, including the steps of: configuring at least one service cell to each terminal, wherein each service cell works on an unauthorized carrier; selecting at least one serving cell as a primary cell or a primary-secondary cell of each terminal to form a primary cell group or a primary-secondary cell group of each terminal; and communicating with each terminal through the main cell group or the main auxiliary cell group.

In the technical scheme, when at least one service cell working on an unauthorized frequency band is selected as a main cell of each terminal to form a main cell group of each terminal, and then the communication is carried out with each terminal through the main cell group, the communication scene that the unauthorized frequency spectrum works independently and the main cell is deployed on the unauthorized frequency band is adopted, and because a channel cannot be continuously occupied on the unauthorized frequency band, namely a channel detection mechanism exists, the communication is carried out with each terminal through the main cell group, the signal transmission probability on the main cell group of each terminal can be improved, the main cell group can be ensured to effectively transmit and receive necessary information and data in time, and the requirements of time delay and efficiency of communication are met.

When at least one service cell working on an unauthorized frequency band is selected as a main auxiliary cell of each terminal to form a main auxiliary cell group of each terminal, and then the main auxiliary cell group is used for communicating with each terminal, a communication scene of double connection is carried out on the unauthorized frequency band and the authorized frequency band, and because a channel cannot be continuously occupied on the unauthorized frequency band, namely a channel detection mechanism exists, the main auxiliary cell group is used for communicating with each terminal, the signal transmission probability on the main auxiliary cell group of each terminal can be improved, the main auxiliary cell group can be ensured to effectively transmit and receive necessary information and data in time, and the requirements of communication time delay and efficiency are met.

For how to configure the at least one serving cell and how to select and form a primary cell group or a primary and secondary cell group of each terminal, the present invention proposes the following three schemes:

the first scheme is as follows:

and configuring the at least one serving cell on the secondary base station for each terminal by the primary serving cell of the primary base station working on the authorized frequency band, wherein the primary serving cell selects at least one serving cell from the at least one serving cell as a primary-secondary cell of each terminal on the secondary base station to form a primary-secondary cell group of each terminal on the secondary base station.

The first scheme is applicable to a scenario that communication is performed between an unlicensed frequency band and a licensed frequency band in a dual-connection manner, that is, at least one serving cell is configured on an auxiliary base station for each terminal by a main serving cell of a main base station working on the licensed frequency band, and a main auxiliary cell group of each terminal on the auxiliary base station is selected and formed by the main serving cell.

Scheme two is as follows:

the method comprises the steps that a main service cell of a main base station working on an authorized frequency band configures a main auxiliary service cell working on an unauthorized frequency band for each terminal on an auxiliary base station, the main auxiliary service cell configures 0 or at least one cell working on the unauthorized frequency band for each terminal on the auxiliary base station, and the 0 or at least one cell and the main auxiliary service cell form the at least one service cell, wherein the main auxiliary service cell selects at least one from the at least one service cell to serve as a main auxiliary cell of each terminal on the auxiliary base station to form a main auxiliary cell group of each terminal on the auxiliary base station.

The second scheme is also applicable to a scenario where the unlicensed frequency band and the licensed frequency band are communicated in a dual-connection manner, that is, a main serving cell of a main base station working on the licensed frequency band configures a main auxiliary serving cell on an auxiliary base station for each terminal, and then the main auxiliary serving cell configures 0 or at least one cell working on the unlicensed frequency band for each terminal on the auxiliary base station, the 0 or at least one cell and the main auxiliary serving cell jointly form the at least one serving cell, and then the main auxiliary serving cell selects and forms a main auxiliary cell group of each terminal on the auxiliary base station.

Further, in a case that there are a plurality of the primary and secondary serving cells, a configuration signaling configuring the 0 or at least one cell to each terminal is sent by one or more of the primary and secondary serving cells. The configuration signaling may be RRC (Radio Resource Control) signaling.

The third scheme is as follows:

and the main serving cell of the main base station working on the unlicensed frequency band configures 0 or at least one cell working on the unlicensed frequency band for each terminal on the main base station, and the 0 or at least one cell and the main serving cell form the at least one serving cell, wherein the main serving cell selects at least one serving cell from the at least one serving cell as the main cell of each terminal to form a main cell group of each terminal.

The third scheme is suitable for a communication scenario that the unlicensed frequency band works independently and the master cell is deployed on the unlicensed frequency band, that is, 0 or at least one cell working on the unlicensed frequency band is configured on the master base station for each terminal by the master serving cell of the master base station on the unlicensed frequency band, the 0 or at least one cell and the master serving cell jointly form the at least one serving cell, and then the master serving cell selects and forms the master cell group of each terminal.

In any of the above technical solutions, preferably, all cells in the primary cell group or the primary and secondary cell groups are capable of sending the primary information block.

In any of the above technical solutions, preferably, any cell in the primary cell group or the primary and secondary cell groups can only be cross-carrier scheduled by other cells in the primary cell group or the primary and secondary cell groups, and all other cells belonging to one base station with the any cell can be cross-carrier scheduled.

Further, cells within the primary cell group or the primary-secondary cell group cannot be cross-carrier scheduled by cells outside the primary cell group or the primary-secondary cell group.

In any of the above technical solutions, preferably, the communication method further includes: transmitting PDCCH and/or PUCCH transmission content through one or more cells in the primary cell group or primary-secondary cell group.

In any of the above technical solutions, preferably, the communication method further includes: when the user equipment transmits Random Access preambles (RA preambles) on multiple cells in the primary cell Group or the primary and secondary cell groups, if the multiple cells belong to the same Timing Advance Group (TAG for short), a Random Access response is transmitted only on one of the multiple cells.

In any of the above technical solutions, preferably, the communication method further includes: when the Radio Link monitoring results of all cells in the main cell group or the main-auxiliary cell group of any terminal are Radio Link failures, determining that the Radio Link Failure (RLF) of the main cell or the main-auxiliary cell of any terminal is failed.

In any of the foregoing technical solutions, preferably, the step of selecting at least one serving cell as the primary cell or the primary and secondary cells of each terminal from the at least one serving cell specifically includes: selecting at least one serving cell with the RSRP/RSRQ greater than or equal to a first threshold and/or the channel occupancy less than or equal to a second threshold as a main cell or a main auxiliary cell of each terminal according to the sequence of the RSRP (Reference Signal Receiving Power)/RSRQ (Reference Signal Receiving Quality) of the at least one serving cell from high to low and/or the sequence of the channel occupancy of the at least one serving cell from low to high.

The technical scheme can ensure that the service cell with better communication environment is selected as the main cell or the main auxiliary cell of the terminal, thereby meeting the requirements of time delay and efficiency of communication. The Channel Occupancy is a Ratio, the denominator is the number of power samples on the carrier, and the numerator is the number of times that the power sample value is higher than the LBT Channel detection threshold value, that is, the number of times that the Channel is occupied by other devices and cannot be used by itself is detected.

In any of the above technical solutions, preferably, the communication method further includes: removing any cell from the main cell group or the main auxiliary cell group when the RSRP/RSRQ of the any cell in the main cell group or the main auxiliary cell group is smaller than or equal to a third threshold value and/or the channel occupancy rate is larger than or equal to a fourth threshold value.

In this technical solution, when RSRP/RSRQ of any cell is less than or equal to the third threshold and/or the duty cycle is greater than or equal to the fourth threshold, it indicates that the communication environment of the cell is deteriorated, and in order to meet the requirements of latency and efficiency of communication, it may be removed from the primary cell group or the primary and secondary cell groups.

In any of the above technical solutions, preferably, the communication method further includes: and when the RSRP/RSRQ of other serving cells outside the main cell group or the main auxiliary cell group is higher than that of any cell in the main cell group or the main auxiliary cell group by a fifth threshold value and/or the channel occupancy of other serving cells outside the main cell group or the main auxiliary cell group is lower than that of any cell in the main cell group or the main auxiliary cell group by a sixth threshold value, replacing any cell by the other serving cells.

In the technical scheme, any cell with a poor communication environment is replaced by other service cells with a better communication environment, so that the cells in the main cell group or the main and auxiliary cell groups can be ensured to be the cells with the better communication environment, and the requirements on time delay and efficiency of communication can be further met.

In any of the above technical solutions, preferably, the communication method further includes: and when the RSRP/RSRQ of other serving cells outside the main cell group or the main auxiliary cell group is larger than or equal to a seventh threshold value and/or the channel occupancy rate of the other serving cells is smaller than or equal to an eighth threshold value, and the RSRP/RSRQ of any cell in the main cell group or the main auxiliary cell group is smaller than or equal to a ninth threshold value and/or the channel occupancy rate of any cell is larger than or equal to a tenth threshold value, replacing the any cell by the other serving cells.

In the technical scheme, similarly, any cell with a poor communication environment is replaced by another serving cell with a better communication environment, so that the cells in the main cell group or the main and auxiliary cell groups can be ensured to be the cells with the better communication environment, and the requirements on communication delay and efficiency can be further met.

In any of the above technical solutions, preferably, a cell used for uplink transmission and a cell used for downlink transmission in the primary cell group or the primary and secondary cell groups are the same or different.

According to the second aspect of the present invention, there is also provided a communication apparatus, comprising: a configuration unit, configured to configure at least one serving cell for each terminal, where each serving cell operates on an unlicensed carrier; a selecting unit, configured to select at least one serving cell from the at least one serving cell as a primary cell or a primary and secondary cell of each terminal, so as to form a primary cell group or a primary and secondary cell group of each terminal; and the communication control unit is used for communicating with each terminal through the main cell group or the main auxiliary cell group.

In the technical scheme, when at least one service cell working on an unauthorized frequency band is selected as a main cell of each terminal to form a main cell group of each terminal, and then the communication is carried out with each terminal through the main cell group, the communication scene that the unauthorized frequency band works independently and the main cell is deployed on the unauthorized frequency band is adopted, and because a channel cannot be continuously occupied on the unauthorized frequency band, namely a channel detection mechanism exists, the communication is carried out with each terminal through the main cell group, the signal transmission probability on the main cell group of each terminal can be improved, the main cell group can be ensured to effectively transmit and receive necessary information and data in time, and the requirements of communication time delay and efficiency are met.

For how the configuration unit configures the at least one serving cell and how the selection unit selects and forms a primary cell group or a primary and secondary cell group of each terminal, the invention proposes the following three schemes:

the first scheme is as follows:

the configuration unit is specifically configured to configure the at least one serving cell on the secondary base station for each terminal through a primary serving cell of a primary base station operating on an authorized frequency band; the selecting unit is specifically configured to select, by the primary serving cell, at least one serving cell from the at least one serving cell as a primary-secondary cell of each terminal on the secondary base station, so as to form a primary-secondary cell group of each terminal on the secondary base station.

The first scheme is suitable for a scene that communication is carried out between an unauthorized frequency band and an authorized frequency band in a dual-connection mode, namely, at least one service cell is configured on an auxiliary base station for each terminal by a main service cell of a main base station working on the authorized frequency band, and a main auxiliary cell group of each terminal on the auxiliary base station is selected and formed by the main service cell.

Scheme two is as follows:

the configuration unit is specifically configured to configure, to each terminal, a primary serving cell on an unlicensed frequency band on a secondary base station through a primary serving cell of a primary base station operating on the licensed frequency band, where the primary serving cell configures, to each terminal, 0 or at least one cell on the unlicensed frequency band on the secondary base station, and the 0 or at least one cell and the primary serving cell form the at least one serving cell; the selecting unit is specifically configured to select, by the primary and secondary serving cells, at least one serving cell from the at least one serving cell as a primary and secondary cell of each terminal on the secondary base station, so as to form a primary and secondary cell group of each terminal on the secondary base station.

The second scheme is also applicable to a scenario that communication is performed between the unlicensed frequency band and the licensed frequency band in a dual-connection manner, that is, a main serving cell of a main base station working on the licensed frequency band configures a main auxiliary serving cell for each terminal on an auxiliary base station, and then the main auxiliary serving cell configures 0 or at least one cell working on the unlicensed frequency band for each terminal on the auxiliary base station, the 0 or at least one cell and the main auxiliary serving cell jointly form the at least one serving cell, and then the main auxiliary serving cell selects and forms a main auxiliary cell group of each terminal on the auxiliary base station.

Further, in a case that there are a plurality of the primary and secondary serving cells, a configuration signaling configuring the 0 or at least one cell to each terminal is sent by one or more of the primary and secondary serving cells. Wherein, the configuration signaling may be RRC signaling.

The third scheme is as follows:

the configuration unit is specifically configured to configure, to each terminal, 0 or at least one cell operating in an unlicensed frequency band on a master base station through the master serving cell of the master base station operating in the unlicensed frequency band, where the 0 or at least one cell and the master serving cell constitute the at least one serving cell; the selecting unit is specifically configured to select, by the primary serving cell, at least one serving cell from the at least one serving cell as a primary cell of each terminal, so as to form a primary cell group of each terminal.

The third scheme is suitable for independent work of the unauthorized frequency band, and a communication scene of a main cell is deployed on the unauthorized frequency band, namely, 0 or at least one cell working on the unauthorized frequency band is configured on the main base station by the main service cell of the main base station on the unauthorized frequency band to each terminal, the 0 or at least one cell and the main service cell jointly form the at least one service cell, and then the main service cell selects and forms a main cell group of each terminal.

In any one of the above technical solutions, preferably, the communication control unit is specifically configured to: transmitting PDCCH and/or PUCCH transmission content through one or more cells in the primary cell group or primary-secondary cell group.

In any one of the above technical solutions, preferably, the communication control unit is specifically configured to: when the user equipment sends the random access lead code on a plurality of cells in the main cell group or the main auxiliary cell group, if the plurality of cells belong to the same time advance group, only sending the random access response on one cell in the plurality of cells.

In any one of the above technical solutions, preferably, the communication control unit is specifically configured to: and when the radio link monitoring results of all the cells in the main cell group or the main and auxiliary cell group of any terminal are radio link failures, determining that the radio link of the main cell or the main and auxiliary cell of any terminal fails.

In any one of the above technical solutions, preferably, the selecting unit is specifically configured to: and selecting at least one serving cell with the RSRP/RSRQ larger than or equal to a first threshold and/or the channel occupancy smaller than or equal to a second threshold as a main cell or a main auxiliary cell of each terminal according to the sequence of the RSRP/RSRQ of the at least one serving cell from high to low and/or the sequence of the channel occupancy of the at least one serving cell from low to high.

The technical scheme can ensure that the service cell with better communication environment is selected as the main cell or the main auxiliary cell of the terminal, thereby meeting the requirements of time delay and efficiency of communication. The Channel Occupancy rate is a Ratio, the denominator is the power sampling times on the carrier, and the numerator is the times that the power sampling value is higher than the LBT Channel detection threshold value, that is, the times that the Channel is detected to be occupied by other devices and cannot be used by itself.

In any of the above technical solutions, preferably, the communication device further includes: the first group management unit is configured to remove any cell from the main cell group or the main-auxiliary cell group when RSRP/RSRQ of the any cell in the main cell group or the main-auxiliary cell group is less than or equal to a third threshold and/or a channel occupancy is greater than or equal to a fourth threshold.

In the technical scheme, when the RSRP/RSRQ of any cell is less than or equal to the third threshold and/or the occupancy rate of the channel is greater than or equal to the fourth threshold, it indicates that the communication environment of the cell is deteriorated, and in order to meet the requirements of latency and efficiency of communication, the RSRP/RSRQ of any cell may be removed from the primary cell group or the primary and secondary cell groups.

In any of the above technical solutions, preferably, the communication device further includes: a second group management unit, configured to replace any cell in the main cell group or the primary and secondary cell group with another serving cell when RSRP/RSRQs of other serving cells outside the main cell group or the primary and secondary cell group are higher than RSRP/RSRQ of any cell in the main cell group or the primary and secondary cell group by a fifth threshold, and/or when a channel occupancy rate of other serving cells outside the main cell group or the primary and secondary cell group is lower than a channel occupancy rate of any cell in the main cell group or the primary and secondary cell group by a sixth threshold.

In any of the above technical solutions, preferably, the communication device further includes: a third group management unit, configured to replace any cell with another serving cell when RSRP/RSRQ of the serving cell other than the primary cell group or the primary and secondary cell groups is greater than or equal to a seventh threshold and/or channel occupancy of the other serving cell is less than or equal to an eighth threshold, and RSRP/RSRQ of any cell in the primary cell group or the primary and secondary cell groups is less than or equal to a ninth threshold and/or channel occupancy of the any cell is greater than or equal to a tenth threshold.

In the technical scheme, similarly, any cell with a poor communication environment is replaced by another serving cell with a better communication environment, so that the cells in the main cell group or the main and auxiliary cell groups can be ensured to be the cells with the better communication environment, and the requirements on communication time delay and efficiency can be further met.

According to a third aspect of the present invention, there is also provided a communication method, including: the terminal determines a main cell group or a main auxiliary cell group working on an unauthorized carrier; communicating with cells in the primary cell group or a primary-secondary cell group; the primary cell group or the primary and secondary cell groups are selected from at least one serving cell operating on an unlicensed carrier, and each serving cell operates on one unlicensed carrier.

In the technical scheme, when a main cell group is selected from at least one service cell working on an unauthorized frequency band, the unauthorized frequency band works independently, and the communication scene of the main cell is deployed on the unauthorized frequency band.

When a main auxiliary cell group is selected from at least one service cell working on an unauthorized frequency band, the communication scene of double connection is carried out on the unauthorized frequency band and an authorized frequency band, and because a channel cannot be continuously occupied on the unauthorized frequency band, namely a channel detection mechanism exists, a terminal communicates with cells in the main auxiliary cell group, the transmission probability of signaling or data between the main auxiliary cell group and the terminal can be improved, the main auxiliary cell group can be ensured to effectively transmit and receive necessary signaling or data in time, and the requirements of communication time delay and efficiency are met.

The terminal determines that the primary-secondary cell group operating on the unlicensed carrier may be determined by receiving a notification signaling sent by a primary serving cell of the primary base station on the licensed frequency band or a primary-secondary cell of the secondary base station on the unlicensed frequency band.

According to a fourth aspect of the present invention, there is also provided a communication apparatus, comprising: a determining unit, configured to determine a primary cell group or a primary and secondary cell group operating on an unlicensed carrier, where the primary cell group or the primary and secondary cell group is formed by selecting from at least one serving cell operating on the unlicensed carrier, and each serving cell operates on one unlicensed carrier; a communication unit, configured to communicate with a cell in the primary cell group or a primary and secondary cell group.

The determination unit may determine that the primary-secondary cell group operating on the unlicensed carrier is determined by receiving a notification signaling transmitted by a primary serving cell of the primary base station on the licensed band or a primary-secondary cell of the secondary base station on the unlicensed band.

Through the technical scheme, the signal transmission probability of the main cell group or the main and auxiliary cell groups on the unauthorized frequency band can be improved, so that the main cell group or the main and auxiliary cell groups can be ensured to effectively transmit and receive necessary information and data in time, and the requirements on time delay and efficiency of communication are met.

Drawings

Fig. 1 shows a schematic flow chart of a communication method according to a first embodiment of the invention;

fig. 2 shows a schematic block diagram of a communication device according to a first embodiment of the invention;

fig. 3 shows a schematic block diagram of a communication device according to a second embodiment of the invention;

fig. 4 shows a schematic block diagram of a communication apparatus according to a third embodiment of the present invention;

fig. 5 shows a schematic block diagram of a communication apparatus according to a fourth embodiment of the present invention;

fig. 6 shows a schematic flow chart of a communication method according to a second embodiment of the invention;

fig. 7 shows a schematic block diagram of a communication apparatus according to a fifth embodiment of the present invention;

fig. 8 shows a schematic block diagram of a communication apparatus according to a sixth embodiment of the present invention;

fig. 9 shows a schematic block diagram of a communication apparatus according to a seventh embodiment of the present invention.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein and, therefore, the scope of the present invention is not limited by the specific embodiments disclosed below.

Fig. 1 shows a schematic flow chart of a communication method according to a first embodiment of the invention.

As shown in fig. 1, a communication method according to a first embodiment of the present invention includes the steps of:

step S10, at least one service cell is configured to each terminal, and each service cell works on an unauthorized carrier.

Step S12, selecting at least one serving cell from the at least one serving cell as a primary cell or a primary and secondary cell of each terminal, so as to form a primary cell group or a primary and secondary cell group of each terminal.

For how to configure the at least one serving cell in step S10 and how to select and form a primary cell group or a primary and secondary cell group of each terminal in step S12, the present invention proposes the following three schemes:

the first scheme is as follows:

Scheme two is as follows:

the method comprises the steps that a main service cell of a main base station working on a licensed frequency band configures a main auxiliary service cell working on an unlicensed frequency band for each terminal on an auxiliary base station, the main auxiliary service cell configures 0 or at least one cell working on the unlicensed frequency band for each terminal on the auxiliary base station, and the 0 or at least one cell and the main auxiliary service cell form the at least one service cell, wherein the main auxiliary service cell selects at least one from the at least one service cell as a main auxiliary cell of each terminal on the auxiliary base station to form a main auxiliary cell group of each terminal on the auxiliary base station.

And a third scheme is as follows:

and the main service cell of the main base station working on the unlicensed frequency band configures 0 or at least one cell working on the unlicensed frequency band on the main base station for each terminal, and the 0 or at least one cell and the main service cell form the at least one service cell, wherein the main service cell selects at least one from the at least one service cell as the main cell of each terminal to form a main cell group of each terminal.

The communication method shown in fig. 1 further includes:

and step S14, communicating with each terminal through the main cell group or the main auxiliary cell group.

The following describes the procedure of the primary cell group or the primary and secondary cell groups communicating with each terminal in detail:

1. all cells in the primary cell group or the primary-secondary cell group are able to send the primary information block.

Specifically, the primary information block is sent through a cell in a primary cell group or a primary and secondary cell group, which detects that a downlink channel is idle.

If the plurality of cells in the main cell group or the main-auxiliary cell group detect that the downlink channel is idle, the main information block can be sent by one or more cells in the plurality of cells at the same time.

In order to increase the sending opportunity of the primary information block, when detecting that the downlink channel is idle, a plurality of cells in the primary cell group or the primary and secondary cell group may be controlled to send the primary information block at different time points, respectively. It is of course also possible to change the transmission period of the primary information block, for example, the primary information block is transmitted in a period of 5ms or 10 ms.

In addition, since the primary information block only needs to send the system frame number, the sending duration of the primary information block may be set to be greater than or equal to the duration occupied by 1 Symbol (Symbol) and less than or equal to the duration occupied by 4 symbols.

2. Any cell in the main cell group or the main auxiliary cell group can only be cross-carrier scheduled by other cells in the main cell group or the main auxiliary cell group, and can be cross-carrier scheduled by all other cells belonging to one base station with the any cell.

3. Transmitting PDCCH and/or PUCCH transmission content through one or more cells in the primary cell group or primary and secondary cell group.

4. When the user equipment sends the random access lead code on a plurality of cells in the main cell group or the main auxiliary cell group, if the plurality of cells belong to the same time advance group, only sending the random access response on one cell in the plurality of cells.

5. And when the radio link monitoring results of all the cells in the main cell group or the main and auxiliary cell group of any terminal are radio link failures, determining that the radio link of the main cell or the main and auxiliary cell of any terminal fails.

In an embodiment of the present invention, step S12 shown in fig. 1 specifically includes: and selecting at least one serving cell with the RSRP/RSRQ larger than or equal to a first threshold and/or the channel occupancy rate smaller than or equal to a second threshold as a main cell or a main auxiliary cell of each terminal according to the sequence of the RSRP/RSRQ of the at least one serving cell from high to low and/or the sequence of the channel occupancy rate of the at least one serving cell from low to high.

Further, the communication method further includes: removing any cell from the main cell group or the main auxiliary cell group when the RSRP/RSRQ of the any cell in the main cell group or the main auxiliary cell group is smaller than or equal to a third threshold value and/or the channel occupancy rate is larger than or equal to a fourth threshold value.

Further, the communication method further includes: and when the RSRP/RSRQ of other service cells outside the main cell group or the main and auxiliary cell group is higher than that of any cell in the main cell group or the main and auxiliary cell group by a fifth threshold value and/or the channel occupancy of other service cells outside the main cell group or the main and auxiliary cell group is lower than that of any cell in the main cell group or the main and auxiliary cell group by a sixth threshold value, replacing the any cell by the other service cells.

In the technical scheme, any cell with a poor communication environment is replaced by other service cells with a better communication environment, so that the cells in the main cell group or the main auxiliary cell group can be ensured to be the cells with the better communication environment, and the requirements on time delay and efficiency of communication can be further met.

Further, the communication method further includes: and when the RSRP/RSRQ of other serving cells outside the main cell group or the main auxiliary cell group is larger than or equal to a seventh threshold value and/or the channel occupancy rate of the other serving cells is smaller than or equal to an eighth threshold value, and the RSRP/RSRQ of any cell in the main cell group or the main auxiliary cell group is smaller than or equal to a ninth threshold value and/or the channel occupancy rate of any cell is larger than or equal to a tenth threshold value, replacing the any cell by the other serving cells.

The cell for uplink transmission and the cell for downlink transmission in the primary cell group or the primary and secondary cell groups are the same or different.

In the communication method shown in fig. 1, since the channel cannot be continuously occupied in the unlicensed frequency band, that is, there is a channel detection mechanism, the main cell group or the main-auxiliary cell group communicates with each terminal, so that the signal transmission probability on the main cell group or the main-auxiliary cell group of each terminal can be increased, and it can be ensured that the main cell group or the main-auxiliary cell group can timely and effectively transmit and receive necessary information and data, thereby satisfying the requirements on time delay and efficiency of communication.

Fig. 2 shows a schematic block diagram of a communication device according to a first embodiment of the invention.

As shown in fig. 2, a communication apparatus 200 according to a first embodiment of the present invention includes: a configuration unit 202, a selection unit 204 and a communication control unit 206.

The configuration unit 202 is configured to configure at least one serving cell for each terminal, where each serving cell operates on an unlicensed carrier; the selecting unit 204 is configured to select at least one serving cell from the at least one serving cell as a primary cell or a primary secondary cell of each terminal to form a primary cell group or a primary secondary cell group of each terminal; the communication control unit 206 is configured to communicate with each terminal through the primary cell group or the primary and secondary cell groups.

When at least one service cell working on the unauthorized frequency band is selected as a main auxiliary cell of each terminal to form a main auxiliary cell group of each terminal, and then the main auxiliary cell group is used for communicating with each terminal, a communication scene of double connection is carried out on the unauthorized frequency band and the authorized frequency band, and because a channel cannot be continuously occupied on the unauthorized frequency band, namely a channel detection mechanism exists, the main auxiliary cell group is used for communicating with each terminal, so that the signal transmission probability on the main auxiliary cell group of each terminal can be improved, the main auxiliary cell group can be ensured to effectively transmit and receive necessary information and data in time, and the requirements on communication time delay and efficiency are met.

For how the configuration unit configures the at least one serving cell and how the selection unit selects and forms the primary cell group or the primary and secondary cell groups of each terminal, the present invention proposes the following three schemes:

the first scheme comprises the following steps:

the configuring unit 202 is specifically configured to configure the at least one serving cell on the secondary base station to each terminal through a primary serving cell of the primary base station operating on the authorized frequency band; the selecting unit 204 is specifically configured to select, by the primary serving cell, at least one serving cell from the at least one serving cell as a primary-secondary cell of each terminal on the secondary base station, so as to form a primary-secondary cell group of each terminal on the secondary base station.

Scheme II:

the configuring unit 202 is specifically configured to configure, to each terminal, a primary serving cell on an unlicensed frequency band on a secondary base station through a primary serving cell of a primary base station operating on the licensed frequency band, where the primary serving cell configures, to each terminal, 0 or at least one cell on the unlicensed frequency band on the secondary base station, and the 0 or at least one cell and the primary serving cell form the at least one serving cell; the selecting unit 204 is specifically configured to select at least one serving cell from the at least one serving cell through the primary and secondary serving cells as a primary and secondary cell of each terminal on the secondary base station, so as to form a primary and secondary cell group of each terminal on the secondary base station.

Further, in a case that the number of the primary and secondary serving cells is multiple, a configuration signaling configuring the 0 or at least one cell to each terminal is sent by one or more of the primary and secondary serving cells. Wherein, the configuration signaling may be RRC signaling.

The third scheme is as follows:

the configuring unit 202 is specifically configured to configure, to each terminal, 0 or at least one cell operating in an unlicensed frequency band on a master base station through the master serving cell of the master base station operating in the unlicensed frequency band, where the 0 or at least one cell and the master serving cell form the at least one serving cell; the selecting unit 204 is specifically configured to select at least one serving cell from the at least one serving cell as a primary cell of each terminal through the primary serving cell, so as to form a primary cell group of each terminal.

The third scheme is suitable for the communication scene that the unauthorized frequency band works independently and the main cell is deployed on the unauthorized frequency band, namely, the main service cell of the main base station on the unauthorized frequency band configures 0 or at least one cell working on the unauthorized frequency band on the main base station for each terminal, the 0 or at least one cell and the main service cell jointly form the at least one service cell, and then the main service cell selects and forms the main cell group of each terminal.

In any of the above technical solutions, preferably, all cells in the primary cell group or the primary and secondary cell groups are capable of sending a primary information block.

In any of the above technical solutions, preferably, any cell in the primary cell group or the primary and secondary cell group can only be cross-carrier scheduled by other cells in the primary cell group or the primary and secondary cell group, and can cross-carrier schedule all other cells belonging to one base station with the any cell.

In any of the above technical solutions, preferably, the communication control unit 206 is specifically configured to: transmitting PDCCH and/or PUCCH transmission content through one or more cells in the primary cell group or primary and secondary cell group.

In any of the above technical solutions, preferably, the communication control unit 206 is specifically configured to: when the user equipment sends random access lead codes on a plurality of cells in the main cell group or the main auxiliary cell group, if the plurality of cells belong to the same time advance group, only one cell in the plurality of cells sends a random access response.

In any of the above technical solutions, preferably, the communication control unit 206 is specifically configured to: and when the radio link monitoring results of all the cells in the main cell group or the main and auxiliary cell group of any terminal are radio link failures, determining that the radio link of the main cell or the main and auxiliary cell of any terminal fails.

In any of the above technical solutions, preferably, the selecting unit 204 is specifically configured to: and selecting at least one serving cell with the RSRP/RSRQ larger than or equal to a first threshold and/or the channel occupancy rate smaller than or equal to a second threshold as a main cell or a main auxiliary cell of each terminal according to the sequence of the RSRP/RSRQ of the at least one serving cell from high to low and/or the sequence of the channel occupancy rate of the at least one serving cell from low to high.

As shown in fig. 3, a communication apparatus 300 according to a second embodiment of the present invention, on the basis of having the configuration unit 202, the selection unit 204, and the communication control unit 206 shown in fig. 2, further includes: a first group management unit 302, configured to remove any cell from the primary cell group or the primary and secondary cell group when RSRP/RSRQ of the any cell in the primary cell group or the primary and secondary cell group is less than or equal to a third threshold and/or channel occupancy is greater than or equal to a fourth threshold.

As shown in fig. 4, a communication apparatus 400 according to a third embodiment of the present invention, on the basis of having the configuration unit 202, the selection unit 204, and the communication control unit 206 shown in fig. 2, further includes: a second group management unit 402, configured to replace any cell in the main cell group or the primary and secondary cell group with another serving cell when RSRP/RSRQs of other serving cells outside the main cell group or the primary and secondary cell group are higher than RSRP/RSRQ of any cell in the main cell group or the primary and secondary cell group by a fifth threshold, and/or when a channel occupancy of other serving cells outside the main cell group or the primary and secondary cell group is lower than a channel occupancy of any cell in the main cell group or the primary and secondary cell group by a sixth threshold.

As shown in fig. 5, a communication apparatus 500 according to a fourth embodiment of the present invention, on the basis of having the configuration unit 202, the selection unit 204, and the communication control unit 206 shown in fig. 2, further includes: a third group management unit 502, configured to replace any cell with another serving cell when RSRP/RSRQ of the serving cell outside the primary cell group or the primary and secondary cell group is greater than or equal to a seventh threshold and/or occupancy of the other serving cell is less than or equal to an eighth threshold, and RSRP/RSRQ of any cell in the primary cell group or the primary and secondary cell group is less than or equal to a ninth threshold and/or occupancy of the any cell is greater than or equal to a tenth threshold.

The cell for uplink transmission and the cell for downlink transmission in the primary cell group or the primary and secondary cell group are the same or different.

In other embodiments of the present invention, the communication apparatus may have all or any two of the first group management unit 302 shown in fig. 3, the second group management unit 402 shown in fig. 4, and the third group management unit 502 shown in fig. 5 on the basis of having the configuration unit 202, the selection unit 204, and the communication control unit 206 shown in fig. 2.

Fig. 6 shows a schematic flow chart of a communication method according to a second embodiment of the invention.

As shown in fig. 6, a communication method according to a second embodiment of the present invention includes the steps of:

step S60, the terminal determines a primary cell group or a primary and secondary cell group operating on an unlicensed carrier, where the primary cell group or the primary and secondary cell group is formed by selecting from at least one serving cell operating on the unlicensed carrier, and each serving cell operates on one unlicensed carrier.

And S62, communicating with the cells in the main cell group or the main auxiliary cell group.

In the technical scheme, when a main cell group is selected from at least one service cell working on an unauthorized frequency band, the communication scene that the unauthorized frequency band works independently and the main cell is deployed on the unauthorized frequency band is adopted, and because a channel cannot be continuously occupied on the unauthorized frequency band, namely a channel detection mechanism exists, a terminal communicates with a cell in the main cell group, the transmission probability of signaling or data between the main cell group and the terminal can be improved, the main cell group can be ensured to timely and effectively transmit and receive necessary signaling or data, and the requirements of communication time delay and efficiency are met.

When a main auxiliary cell group is selected from at least one service cell working on an unauthorized frequency band, the communication scene of double connection is carried out on the unauthorized frequency band and an authorized frequency band, and because a channel cannot be continuously occupied on the unauthorized frequency band, namely a channel detection mechanism exists, a terminal communicates with cells in the main auxiliary cell group, so that the transmission probability of signaling or data between the main auxiliary cell group and the terminal can be improved, the main auxiliary cell group can be ensured to timely and effectively transmit and receive necessary signaling or data, and the requirements of time delay and efficiency of communication are met.

Fig. 7 shows a schematic block diagram of a communication apparatus according to a fifth embodiment of the present invention.

As shown in fig. 7, a communication apparatus 700 according to a fifth embodiment of the present invention includes: a determination unit 702 and a communication unit 704.

The determining unit 702 is configured to determine a primary cell group or a primary and secondary cell group operating on an unlicensed carrier, where the primary cell group or the primary and secondary cell group is formed by selecting from at least one serving cell operating on an unlicensed carrier, and each serving cell operates on an unlicensed carrier; the communication unit 704 is configured to communicate with cells in the primary cell group or the primary and secondary cell groups.

The determining unit 702 determines that the primary-secondary cell group operating on the unlicensed carrier may be determined by receiving a notification signaling sent by a primary serving cell of the primary base station on the licensed band or a primary-secondary cell of the secondary base station on the unlicensed band.

In summary, the technical solution of the present invention is mainly to improve the signal transmission probability through a primary cell Group (PCell Group) or a primary and secondary cell Group (PSCell Group) operating in an unlicensed frequency band, so as to ensure that the primary cell Group or the primary and secondary cell Group can effectively transmit and receive necessary information and data in time, and meet the requirements of communication delay and efficiency.

Specifically, the following aspects are mainly classified:

1. configuration of PCell Group or PSCell Group.

1. Configuration of PCell Group:

the PCell of the main base station working on the unlicensed frequency band configures 0 or at least one Cell working on the unlicensed frequency band for each terminal on the main base station, and then the PCell selects 0 or at least one Cell from the 0 or at least one Cell and forms a PCell Group of each terminal together with the PCell.

Each Cell in at least one Cell works on an unlicensed carrier, for example, cell #1 is configured on unlicensed carrier 1, cell #2 is configured on unlicensed carrier 2, cell #3 \8230 \ 8230is configured on unlicensed carrier 3, cell # M is configured on unlicensed carrier M, and then 0 Cell or at least one Cell selected by PCell and PCell jointly form a PCell Group of each terminal. The number of cells in the PCell Group may have an upper limit, such as a maximum of 2, 3, or other values. For different users, the PCell groups are independent, i.e., the PCell groups of different users may be the same or different.

2. The configuration of the PSCell Group is specifically divided into two configuration schemes:

scheme 1:

the PCell of a master base station (i.e., meNB) operating on a licensed frequency band configures at least one serving cell operating on an unlicensed frequency band to each terminal on a secondary base station (i.e., seNB), and then the PCell selects at least one PSCell from the at least one serving cell as each terminal on the SeNB to form a PSCell Group of each terminal on the secondary base station.

Each serving cell in at least one serving cell operates on an unlicensed carrier, for example, SCell #1 is configured on unlicensed carrier 1, SCell #2 is configured on unlicensed carrier 2, SCell #3 \8230isconfigured on unlicensed carrier 3, \8230, SCell # M is configured on unlicensed carrier M, and then at least one SCell is selected from PCell to form PSCell Group of each terminal. The number of cells in the PSCell Group may have an upper limit, such as a maximum of 2, 3, or other values. For different users, the PSCell groups are independent, that is, the PSCell groups of different users may be the same or different.

Scheme 2:

the method comprises the steps that a primary base station (namely, an MeNB) working on a licensed frequency band configures a PSCell working on an unlicensed frequency band to each terminal on a secondary base station (namely, an SeNB), then the PSCell configures 0 or at least one cell working on the unlicensed frequency band to each terminal on the SeNB, and then the PSCell selects 0 or at least one cell from the 0 or at least one cell and forms a PSCell Group of each terminal together with the PSCell.

Each cell of at least one cell operates on an unlicensed carrier, for example, SCell #1 is configured on unlicensed carrier 1, SCell #2 is configured on unlicensed carrier 2, SCell #3 \8230 \ 8230is configured on unlicensed carrier 3, SCell # M is configured on unlicensed carrier M, and then PSCell selects 0 or at least one SCell from the SCell and PSCell to jointly form PSCell Group of each terminal. The number of cells in the PSCell Group may have an upper limit, such as a maximum of 2, 3, or other values. For different users, the PSCell groups are independent, that is, the PSCell groups of different users may be the same or different.

3. One specific way of selecting a PSCell in a PSCell Group is:

the SCell is selected to form an SCell Group, and one or more scells are further selected from the SCell Group as pscells to form a PSCell Group.

When the SCell is selected, the SCell may be selected by using events A3, A4, and A5 of LTE.

For example, when Event A3 is adopted, if the service quality of the neighboring cell is higher than that of the current serving cell, the neighboring cell is added to the SCell Group; when Event A4 is adopted, if the service quality of the adjacent cell is higher than a certain threshold value, adding the adjacent cell into the SCell Group; when adopting Event A5, if the service quality of the service cell is lower than a threshold value and the service command of the adjacent cell is higher than a threshold value, adding the adjacent cell into the SCell Group.

4. Addition, removal, and replacement of pscells within a PSCell Group:

(1) And (4) adding the PSCell.

Sequencing all SCells in a descending order, wherein the sequencing criterion is as follows: the RSRP/RSRQ is in the order of big to small and/or the channel occupancy is in the order of low to high. The SCells ranked at the forefront and satisfying a predetermined condition are sequentially selected as PSCell #1, PSCell #2 \8230; \8230untilthe selected PSCells reach the maximum number or all SCells are selected. The predetermined condition means that the RSRP/RSRQ is larger than a threshold value, and/or the channel occupancy rate is smaller than a threshold value.

(2) Removal of PSCell.

And when the RSRP/RSRQ of a certain PScell in the PScell Group is smaller than a certain threshold value and/or the channel occupancy rate is larger than a threshold value, removing the PScell from the PScell Group.

(3) Replacement of PSCell

The first method is as follows: and if the RSRP/RSRQ of a certain SCell is higher than the RSRP/RSRQ of a PScell in the PScell Group by a certain value and/or the channel occupancy rate of a certain SCell is lower than the channel occupancy rate of the PScell by a certain value, replacing the PScell by the SCell.

The second method comprises the following steps: if the RSRP/RSRQ of a certain SCell is higher than a threshold value 1, and/or the channel occupancy rate is lower than a threshold value 2; and the RSRP/RSRQ of one PScell in the PScell Group is lower than a threshold value of 3, and/or the channel occupancy rate is higher than a threshold value of 4, replacing the PScell by the SCell.

5. The scheme for adding, removing and replacing the PCell in the PCell Group is similar to the scheme for adding, removing and replacing the PSCell in the PSCell Group, and is not described again.

2. The function of the PCell Group or PSCell Group.

1. And (3) transmitting the MIB:

all pcells in the PCell Group need to send the MIB.

Similarly, all pscells in a PSCell Group send MIB.

2. Cross-carrier scheduling function:

all pcells in a PCell Group cannot be cross-carrier scheduled by cells outside the PCell Group, but can be cross-carrier scheduled by cells within the PCell Group. And if the plurality of PCell detect that the channel is idle and cross-carrier scheduling signaling needs to be sent, the PCell with a small number sends the cross-carrier scheduling signaling. The PCell with the small number represents the PCell with the maximum RSRP/RSRQ and/or the lowest channel occupancy rate.

Similarly, all pscells within a PSCell Group cannot be cross-carrier scheduled by scells other than the PSCell Group, but can be cross-carrier scheduled by pscells within the PSCell Group. And if the plurality of PSCells detect that the channel is idle and cross-carrier scheduling signaling needs to be sent, sending the cross-carrier scheduling signaling by the PSCells with small numbers. The PSCells with small numbers represent the PSCells with the maximum RSRP/RSRQ and/or the minimum channel occupancy rates.

3. Transmission of PUCCH/PDCCH bearer information:

all pcells in the PCell Group may send information carried by the PUCCH/PDCCH, but the same PUCCH/PDCCH content may be sent on only one of the pcells at the same time, and specifically, which PCell sends information is dynamically configured or determined by LBT (Listen Before Talk) channel detection results.

Similarly, all pscells in a PSCell Group may transmit information carried by PUCCH/PDCCH, but the same PUCCH/PDCCH content may be transmitted on only one PSCell at the same time, and specifically which PSCell is transmitted is dynamically configured or determined by LBT channel detection results and channel conditions.

4. Control of the random access procedure:

the user equipment may transmit the random access preamble on all pcells in the PCell Group. If the PRACH (Physical Random Access Channel) channels of multiple pcells in the PCell Group are idle, the user equipment may send an RA preamble on the multiple pcells; but RA response may be sent on only one PCell if these pcells belong to the same TAG.

Similarly, the user equipment may send random access preambles on all pscells in the PSCell Group. If the PRACH channels of multiple pscells within a PSCell Group are idle, the user equipment may send an RA preamble on the multiple pscells; however, if the pscells belong to the same TAG, the RA response may be transmitted on only one PSCell.

5. Radio link detection (RLM):

when all PCell in the PCell Group are detected as RLF, the UE can determine that the PCell is RLF, and then the RRC-reassabeliment process is executed.

When all pscells in the PSCell Group are detected as RLFs, the UE can determine that the PSCell is the RLF, and then sends a radio link failure report to the PCell of the primary base station operating on the licensed frequency band.

Fig. 8 shows a schematic block diagram of a communication apparatus according to a sixth embodiment of the present invention.

As shown in fig. 8, a communication apparatus according to a sixth embodiment of the present invention includes: a processor 1 and a memory 2. In some embodiments of the invention, the processor 1 and the memory 2 may be connected by a bus 3 or other means, as exemplified by the connection by the bus 3 in fig. 8.

Wherein, the memory 2 is used for storing a group of program codes, and the processor 1 calls the program codes stored in the memory 2 to execute the following operations:

configuring at least one service cell for each terminal, wherein each service cell works on an unauthorized carrier;

selecting at least one serving cell as a primary cell or a primary and secondary cell of each terminal to form a primary cell group or a primary and secondary cell group of each terminal;

and communicating with each terminal through the main cell group or the main auxiliary cell group.

As an alternative embodiment, the processor 1 calls the program code stored in the memory 2 and is further configured to perform the following operations:

configuring said at least one serving cell on a secondary base station to said each terminal through a primary serving cell of a primary base station operating on a licensed frequency band,

wherein the primary serving cell selects at least one serving cell from the at least one serving cell as a primary-secondary cell of each terminal on the secondary base station to form a primary-secondary cell group of each terminal on the secondary base station.

configuring a primary and secondary service cell working on an unlicensed frequency band on a secondary base station for each terminal through a primary service cell of a primary base station working on the licensed frequency band, configuring 0 or at least one cell working on the unlicensed frequency band on the secondary base station for each terminal by the primary and secondary service cells, wherein the 0 or at least one cell and the primary and secondary service cells form the at least one service cell,

wherein the primary-secondary serving cell selects at least one serving cell from the at least one serving cell as a primary-secondary cell of each terminal on the secondary base station to form a primary-secondary cell group of each terminal on the secondary base station.

configuring 0 or at least one cell working on an unlicensed frequency band to each terminal on a master base station through the master serving cell of the master base station working on the unlicensed frequency band, the 0 or at least one cell and the master serving cell forming the at least one serving cell,

and the main serving cell selects at least one from the at least one serving cell as a main cell of each terminal to form a main cell group of each terminal.

transmitting PDCCH and/or PUCCH transmission content through one or more cells in the primary cell group or primary-secondary cell group.

when the user equipment sends random access lead codes on a plurality of cells in the main cell group or the main auxiliary cell group, if the plurality of cells belong to the same time advance group, only one cell in the plurality of cells sends a random access response.

and when the radio link monitoring results of all the cells in the main cell group or the main and auxiliary cell group of any terminal are radio link failures, determining that the radio link of the main cell or the main and auxiliary cell of any terminal fails.

As an optional implementation manner, the processor 1 invokes the program code stored in the memory 2 to perform an operation of selecting at least one serving cell as a primary cell or a primary and secondary cell of each terminal, specifically:

and selecting at least one serving cell with the RSRP/RSRQ larger than or equal to a first threshold and/or the channel occupancy smaller than or equal to a second threshold as a main cell or a main auxiliary cell of each terminal according to the sequence of the RSRP/RSRQ of the at least one serving cell from high to low and/or the sequence of the channel occupancy of the at least one serving cell from low to high.

removing any cell from the primary cell group or the primary and secondary cell group when the RSRP/RSRQ of the any cell in the primary cell group or the primary and secondary cell group is less than or equal to a third threshold and/or the channel occupancy is greater than or equal to a fourth threshold.

and when the RSRP/RSRQ of other serving cells outside the main cell group or the main auxiliary cell group is higher than that of any cell in the main cell group or the main auxiliary cell group by a fifth threshold value and/or the channel occupancy of other serving cells outside the main cell group or the main auxiliary cell group is lower than that of any cell in the main cell group or the main auxiliary cell group by a sixth threshold value, replacing any cell by the other serving cells.

and when the RSRP/RSRQ of other serving cells outside the main cell group or the main auxiliary cell group is larger than or equal to a seventh threshold value and/or the channel occupancy rate of the other serving cells is smaller than or equal to an eighth threshold value, and the RSRP/RSRQ of any cell in the main cell group or the main auxiliary cell group is smaller than or equal to a ninth threshold value and/or the channel occupancy rate of any cell is larger than or equal to a tenth threshold value, replacing the any cell by the other serving cells.

As shown in fig. 9, a communication apparatus according to a seventh embodiment of the present invention includes: a processor 1', a memory 2' and a transceiver 4'. In some embodiments of the invention, the processor 1', memory 2' and transceiver 4' may be connected by a bus 3' or otherwise, as exemplified by the connection by bus 3' in FIG. 9.

Wherein, the memory 2' is used for storing a group of program codes, and the processor 1' calls the program codes stored in the memory 2' to execute the following operations:

determining a primary cell group or a primary and secondary cell group operating on an unlicensed carrier, wherein the primary cell group or the primary and secondary cell group is formed by selecting from at least one serving cell operating on the unlicensed carrier, and each serving cell operates on one unlicensed carrier.

Communicating with cells of the primary group of cells or primary and secondary groups of cells through a transceiver 4'.

The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.

The units in the communication device of the embodiment of the invention can be combined, divided and deleted according to actual needs.

It will be understood by those skilled in the art that all or part of the steps of the methods of the above embodiments may be implemented by program instructions associated with hardware, and the program may be stored in a computer-readable storage medium, which includes Read-Only Memory (ROM), random Access Memory (RAM), programmable Read-Only Memory (PROM), erasable Programmable Read-Only Memory (EPROM), one-time Programmable Read-Only Memory (OTPROM), electrically Erasable Programmable Read-Only Memory (EEPROM), an optical Disc-Read-Only Memory (CD-ROM) or other storage medium, a magnetic tape, or any other medium capable of storing data for a computer or other computer.

The technical scheme of the invention is described in detail in the above with reference to the accompanying drawings, and a new communication scheme is provided in the invention, so that the signal transmission probability on the main cell group or the main and auxiliary cell groups on the unlicensed frequency band can be improved, and further, the main cell group or the main and auxiliary cell groups can be ensured to effectively transmit and receive necessary information and data in time, and the requirements on communication delay and efficiency are met.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A communications apparatus, comprising:

a configuration unit, configured to configure at least one serving cell for each terminal, where each serving cell operates on an unlicensed carrier;

a selecting unit, configured to select at least one serving cell from the at least one serving cell as a primary cell or a primary and secondary cell of each terminal, so as to form a primary cell group or a primary and secondary cell group of each terminal;

a communication control unit, configured to communicate with each terminal through the primary cell group or a primary-secondary cell group;

the communication control unit is specifically configured to:

when the user equipment sends the random access lead code on a plurality of cells in the main cell group or the main auxiliary cell group, if the plurality of cells belong to the same time advance group, only sending the random access response on one cell in the plurality of cells.

2. The communication device of claim 1, wherein:

the configuration unit is specifically configured to configure the at least one serving cell on the secondary base station for each terminal through a primary serving cell of a primary base station operating on an authorized frequency band;

the selecting unit is specifically configured to select, by the primary serving cell, at least one serving cell from the at least one serving cell as a primary-secondary cell of each terminal on the secondary base station, so as to form a primary-secondary cell group of each terminal on the secondary base station.

3. The communication device of claim 1, wherein:

the configuration unit is specifically configured to configure, to each terminal, a primary serving cell on an unlicensed frequency band on a secondary base station through a primary serving cell of a primary base station operating on the licensed frequency band, where the primary serving cell configures, to each terminal, 0 or at least one cell on the unlicensed frequency band on the secondary base station, and the 0 or at least one cell and the primary serving cell form the at least one serving cell;

the selecting unit is specifically configured to select, by the primary and secondary serving cell, at least one serving cell from the at least one serving cell as a primary and secondary cell of each terminal on the secondary base station, so as to form a primary and secondary cell group of each terminal on the secondary base station.

4. A communications apparatus according to claim 3, wherein in the case that there are a plurality of primary secondary serving cells, the configuration signaling configuring the 0 or at least one cell to each terminal is sent by one or more of the primary secondary serving cells.

5. The communication device of claim 1, wherein:

the configuration unit is specifically configured to configure, to each terminal, 0 or at least one cell operating in an unlicensed frequency band on a master base station through the master serving cell of the master base station operating in the unlicensed frequency band, where the 0 or at least one cell and the master serving cell constitute the at least one serving cell;

the selecting unit is specifically configured to select, by the primary serving cell, at least one serving cell from the at least one serving cell as a primary cell of each terminal, so as to form a primary cell group of each terminal.

6. The communications apparatus of claim 1, wherein all cells in the primary cell group or primary and secondary cell group are capable of transmitting a primary information block.

7. The apparatus of claim 1, wherein any cell in the primary cell group or primary-secondary cell group can only be cross-carrier scheduled by other cells in the primary cell group or primary-secondary cell group, and all other cells belonging to one base station with the any cell can be cross-carrier scheduled.

8. The communication device according to claim 1, wherein the communication control unit is specifically configured to:

9. The communication device according to claim 1, wherein the communication control unit is specifically configured to:

10. The communication device according to any of claims 1 to 9, wherein the selection unit is specifically configured to:

and selecting at least one serving cell with the RSRP/RSRQ larger than or equal to a first threshold and/or the channel occupancy rate smaller than or equal to a second threshold as a main cell or a main auxiliary cell of each terminal according to the sequence of the RSRP/RSRQ of the at least one serving cell from high to low and/or the sequence of the channel occupancy rate of the at least one serving cell from low to high.

11. The communications apparatus of claim 10, further comprising:

the first group management unit is configured to remove any cell from the main cell group or the main-auxiliary cell group when RSRP/RSRQ of the any cell in the main cell group or the main-auxiliary cell group is less than or equal to a third threshold and/or a channel occupancy is greater than or equal to a fourth threshold.

12. The communications device of claim 10, further comprising:

a second group management unit, configured to replace any cell in the main cell group or the primary and secondary cell group with another serving cell when RSRP/RSRQs of other serving cells outside the main cell group or the primary and secondary cell group are higher than RSRP/RSRQ of any cell in the main cell group or the primary and secondary cell group by a fifth threshold, and/or when a channel occupancy rate of other serving cells outside the main cell group or the primary and secondary cell group is lower than a channel occupancy rate of any cell in the main cell group or the primary and secondary cell group by a sixth threshold.

13. The communications device of claim 10, further comprising:

a third group management unit, configured to replace any cell with another serving cell when RSRP/RSRQ of the serving cell other than the main cell group or the main secondary cell group is greater than or equal to a seventh threshold and/or occupancy of the other serving cell is less than or equal to an eighth threshold, and RSRP/RSRQ of any cell in the main cell group or the main secondary cell group is less than or equal to a ninth threshold and/or occupancy of the any cell is greater than or equal to a tenth threshold.

14. A method of communication, comprising:

selecting at least one serving cell as a primary cell or a primary-secondary cell of each terminal to form a primary cell group or a primary-secondary cell group of each terminal;

communicating with each terminal through the primary cell group or a primary-secondary cell group;

15. The communication method according to claim 14, wherein:

configuring the at least one serving cell on a secondary base station to each terminal by a primary serving cell of a primary base station working on an authorized frequency band, wherein the primary serving cell selects at least one serving cell from the at least one serving cell as a primary-secondary cell of each terminal on the secondary base station to form a primary-secondary cell group of each terminal on the secondary base station; or

A main service cell of a main base station working on a licensed frequency band configures a main auxiliary service cell working on an unlicensed frequency band to each terminal on an auxiliary base station, the main auxiliary service cell configures 0 or at least one cell working on the unlicensed frequency band to each terminal on the auxiliary base station, the 0 or at least one cell and the main auxiliary service cell form the at least one service cell, wherein the main auxiliary service cell selects at least one from the at least one service cell as a main auxiliary cell of each terminal on the auxiliary base station to form a main auxiliary cell group of each terminal on the auxiliary base station,

when the number of the primary and secondary serving cells is multiple, a configuration signaling for configuring the 0 or at least one cell to each terminal is sent by one or more of the primary and secondary serving cells; or

16. The communication method according to claim 14, wherein:

all cells in the main cell group or the main auxiliary cell group can send main information blocks; and/or

Any cell in the main cell group or the main and auxiliary cell group can only be cross-carrier scheduled by other cells in the main cell group or the main and auxiliary cell group, and can cross-carrier schedule all other cells belonging to one base station with the any cell.

17. The communication method according to claim 14, further comprising: transmitting PDCCH and/or PUCCH transmission content through one or more cells in the primary cell group or primary and secondary cell group.

18. The communication method according to claim 14, further comprising:

19. The communication method according to any one of claims 14 to 18, wherein the step of selecting at least one serving cell from the at least one serving cell as the primary cell or the primary secondary cell of each terminal specifically includes:

20. The communication method according to claim 19, further comprising:

removing any cell from the primary cell group or the primary and secondary cell group when the RSRP/RSRQ of the any cell in the primary cell group or the primary and secondary cell group is less than or equal to a third threshold and/or the channel occupancy is greater than or equal to a fourth threshold; and/or

Replacing any cell by another serving cell when the RSRP/RSRQ of the other serving cell outside the main cell group or main and auxiliary cell group is higher than the RSRP/RSRQ of any cell in the main cell group or main and auxiliary cell group by a fifth threshold value and/or when the channel occupancy of the other serving cell outside the main cell group or main and auxiliary cell group is lower than the channel occupancy of any cell in the main cell group or main and auxiliary cell group by a sixth threshold value; and/or

And when the RSRP/RSRQ of other serving cells outside the main cell group or the main and auxiliary cell group is larger than or equal to a seventh threshold and/or the channel occupancy rate of the other serving cells is smaller than or equal to an eighth threshold, and the RSRP/RSRQ of any cell in the main cell group or the main and auxiliary cell group is smaller than or equal to a ninth threshold and/or the channel occupancy rate of any cell is larger than or equal to a tenth threshold, replacing the any cell by the other serving cells.

21. A communications apparatus, comprising:

a determining unit, configured to determine a primary cell group or a primary and secondary cell group operating on an unlicensed carrier, where the primary cell group or the primary and secondary cell group is formed by selecting from at least one serving cell operating on the unlicensed carrier, and each serving cell operates on one unlicensed carrier;

a communication unit, configured to communicate with cells in the primary cell group or a primary and secondary cell group;

the communication unit is configured to, when the user equipment transmits the random access preamble code on each of the cells in the primary cell group or the primary and secondary cell groups, transmit the random access response only on one of the cells if the cells belong to the same time advance group.

22. A method of communication, comprising:

the terminal determines a main cell group or a main auxiliary cell group working on an unauthorized carrier;

communicating with cells in the primary cell group or a primary-secondary cell group;

wherein the primary cell group or the primary and secondary cell groups are formed by selecting from at least one serving cell operating on an unlicensed carrier, and each serving cell operates on an unlicensed carrier;