CN107615821B

CN107615821B - Data transmission method, equipment and system

Info

Publication number: CN107615821B
Application number: CN201680032346.7A
Authority: CN
Inventors: 邓天乐; 彭文杰
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-09-07
Filing date: 2016-09-07
Publication date: 2020-04-28
Anticipated expiration: 2036-09-07
Also published as: WO2017041211A1; CN107615821A; WO2017041718A1

Abstract

The invention discloses a data transmission method, equipment and a system, which are used for solving the problem that the existing high-frequency small station can not select a proper beam for UE to carry out data transmission based on the uplink feedback of the UE. The invention provides a data transmission method, which is applied to a communication system comprising a first base station and a second base station, and comprises the following steps: a first base station obtains a target beam capable of serving a terminal accessed to the first base station from beams of a second base station; the first base station sends part or all downlink data of the terminal to the second base station, so that the second base station sends the received downlink data to the terminal through the target beam, and the terminal can establish a downlink data link with the second base station with the assistance of the first base station, so that the resource utilization rate of the second base station is improved, the load of the first base station is reduced, and the throughput rate of the terminal is improved.

Description

Data transmission method, equipment and system

This application claims priority from a patent application filed by the chinese patent office on 7/9/2015 with application number PCT/CN2015/089067 entitled "a data transmission method, apparatus and system," which is incorporated by reference in its entirety.

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a data transmission method, device, and system.

Background

As the demand of user equipment for mobile broadband is increasing, the problem of insufficient spectrum resources is more and more prominent, and operators are beginning to shift their attention to high frequency resources. The high-frequency resources are richer than the low-frequency resources, the bandwidth is larger, and the throughput of the user equipment can be effectively improved. On the basis that the low-frequency macro station provides wide coverage, a high-frequency small station is arranged for a hot spot area in the coverage area of the low-frequency macro station, so that the problem of hot spot capacity can be effectively solved, as shown in fig. 1.

Compared with the low-frequency resource, the signal wavelength of the high-frequency resource is shorter, and taking the half-wavelength interval placement as an example, the number of antennas that can be arranged in a unit area is increased, which is very beneficial for arranging a Massive Multiple Input Multiple Output (Massive MIMO) system. In the prior art, Massive MIMO is adopted in a high-frequency small station, and a beamforming technology is used to provide services for user equipment at the edge covered by the small station, thereby improving throughput. Compared with the traditional MIMO, the Massive MIMO has more antennas, the beam forming technology generates a radiation directional diagram with strong directivity by utilizing the strong correlation of a space channel and the interference principle of waves, and the main lobe of the radiation directional diagram points to user equipment, so that the signal-to-noise ratio is improved, and the system capacity or the coverage range is improved.

User Equipment (UE; also referred to as a terminal) located at the edge of the coverage area of the high-frequency small station can receive downlink data through the beam of the high-frequency small station, but due to low reliability of the high-frequency signal, the uplink signal of the UE cannot reach the high-frequency small station, and thus the high-frequency small station cannot select a proper beam for the UE to perform data transmission based on the uplink feedback of the UE.

Disclosure of Invention

The embodiment of the invention provides a data transmission method, equipment and a system, which solve the problem that due to low reliability of high-frequency signals, uplink signals of UE cannot reach a high-frequency small station, so that the high-frequency small station cannot select proper beams for the UE to perform data transmission based on uplink feedback of the UE.

In a first aspect, a data transmission method is applied to a communication system including a first base station and a second base station, and the method includes:

the first base station obtains a target beam which can serve a terminal accessed to the first base station in the beams of the second base station;

and the first base station sends part or all downlink data of the terminal to the second base station so that the second base station sends the downlink data to the terminal through the target beam.

With reference to the first aspect, in a first possible implementation manner, the method further includes:

and the first base station receives the information of the beam mode adopted by the second base station, which is sent by the second base station.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, if the second base station fixedly forms multiple beams by using a first beam pattern, where each beam corresponds to a different antenna port, information of the beam pattern includes: first indication information for indicating that a beam pattern adopted by the second base station is a first beam pattern, and antenna port information corresponding to each beam of the second base station;

if the second base station forms different beams in different time intervals by using a second beam pattern, the information of the beam pattern includes: second indication information for indicating that the beam pattern adopted by the second base station is a second beam pattern, and information of a time interval corresponding to each beam of the second base station.

With reference to the first aspect, the first possible implementation manner of the first aspect, or the second possible implementation manner of the first aspect, in a third possible implementation manner, the method further includes:

the first base station configures a reference signal for measurement on each beam of the second base station for the terminal, and sends configuration information of the reference signal to the terminal; or

The first base station sends a configuration request to the second base station to request the second base station to configure a reference signal for the terminal on each beam of the second base station for measurement; and the first base station receives configuration information of reference signals for measurement, configured on all beams of the second base station by the second base station for the terminal, and sends the configuration information to the terminal.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner, the obtaining, by the first base station, a target beam capable of serving a terminal that has accessed the first base station in a beam of the second base station includes:

the first base station determines the target beam based on measurement information reported by the terminal, wherein the measurement information is obtained by measuring reference signals on each beam of the second base station by the terminal; or

The first base station determines the target beam based on the measurement information reported by the terminal and the received load information on each beam of the second base station, which is sent by the second base station, wherein the measurement information is obtained by the terminal measuring the reference signal on each beam of the second base station.

With reference to the third possible implementation manner of the first aspect, in a fifth possible implementation manner, before obtaining a target beam capable of serving a terminal that has accessed the first base station in a beam of the second base station, the method includes: the first base station sends measurement information reported by the terminal to the second base station, wherein the measurement information is obtained by measuring reference signals on different beams of the second base station by the terminal;

the first base station obtaining a target beam capable of serving a terminal having access to the first base station from among beams of the second base station, including: and the first base station receives the information of the target beam sent by the second base station to obtain the target beam.

With reference to the fourth possible implementation manner of the first aspect or the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, if the second base station fixedly forms multiple beams by using the first beam pattern, each beam corresponding to a different antenna port, the measurement information includes:

the terminal measures the measured values which are greater than or equal to a set measurement threshold in the measured values obtained by the reference signal and the identification information of the antenna port corresponding to the measured values; or the terminal measures all measured values obtained by the reference signal and identification information of the antenna port corresponding to the measured values; or the terminal measures the maximum measured value in the measured values obtained by the reference signal and the identification information of the antenna port corresponding to the maximum measured value; or the terminal measures the first N maximum measured values in the measured values obtained by the reference signal and the identification information of the antenna ports corresponding to the maximum measured values, wherein N is a positive integer;

if the second base station forms different beams in different time intervals by using a second beam pattern, the measurement information includes:

the terminal measures a measured value obtained by measuring a reference signal on an antenna port of the second base station to obtain information of a time interval in which the reference signal is positioned, wherein the measured value is greater than or equal to a set measurement threshold; or information of different time intervals and a measured value obtained by measuring a reference signal on an antenna port of the second base station by the terminal in different time intervals; or the terminal measures the maximum measured value in the measured values obtained by the reference signal on the antenna port of the second base station and the relevant information of the corresponding time interval; or the terminal measures the first N maximum measurement values and the relevant information of the corresponding time intervals in the measurement values obtained by the reference signal on the antenna port of the second base station, wherein N is a positive integer.

With reference to the first aspect, in a seventh possible implementation manner, where the first base station is co-located with the second base station, and the obtaining, by the first base station, a target beam capable of serving a terminal that has accessed the first base station in a beam of the second base station includes:

the first base station compares the currently measured DOA in the incoming wave direction between the terminal and the first base station with the stored DOA; the first base station determines the DOA with the minimum difference value with the current DOA of the terminal from the stored DOAs, and determines the beam corresponding to the determined DOA as the target beam; or

The first base station compares the current measured incoming wave direction DOA between the terminal and the first base station with the stored different DOA ranges; the first base station determines the DOA range in which the current DOA of the terminal is positioned, and determines part or all of beams corresponding to the determined DOA range as the target beams; or

The first base station compares the currently measured path loss information and DOA between the terminal and the first base station with the combination formed by each set of stored path loss information and DOA; the first base station determines a combination with the smallest difference value between the current path loss information and the DOA of the terminal from the stored combinations, and determines a beam corresponding to the determined combination as the target beam; or

The first base station compares the current measured path loss information and DOA between the terminal and the first base station with the range of the combination formed by different stored path loss information and DOA; and the first base station determines the range of the combination of the current path loss information and the DOA of the terminal, and determines part or all of the beams corresponding to the determined range of the combination as the target beams.

With reference to the first aspect, in an eighth possible implementation manner, where the first base station is co-located with the second base station, and the obtaining, by the first base station, a target beam capable of serving a terminal that has accessed the first base station in a beam of the second base station includes:

the first base station sends information obtained by current measurement of the first base station to the second base station, wherein the information obtained by current measurement of the first base station at least comprises a DOA (direction of arrival) between the terminal and the first base station;

and the first base station receives the information of the target beam formed by the second base station, which is sent by the second base station, and determines the target beam corresponding to the information of the target beam.

With reference to the fourth possible implementation manner of the first aspect or the seventh possible implementation manner of the first aspect, in a ninth possible implementation manner, the method further includes:

and the first base station sends the information of the target wave beam and the identification information of the terminal to the second base station.

With reference to the first aspect or any one of the first to ninth possible implementation manners of the first aspect, in a tenth possible implementation manner, the method further includes:

and the first base station sends the information of the target wave beam to the terminal.

With reference to the second possible implementation manner of the first aspect, in an eleventh possible implementation manner, the method further includes:

and the first base station sends the received information of the beam mode adopted by the second base station to the terminal.

In a second aspect, a data transmission method is applied to a communication system including a first base station and a second base station, and the method includes:

the second base station obtaining a target beam capable of serving a terminal accessed to the first base station in the beam of the second base station;

and the second base station receives part or all downlink data of the terminal sent by the first base station and sends the downlink data to the terminal through the target wave beam.

With reference to the second aspect, in a first possible implementation manner, the method further includes:

and the second base station sends the information of the beam mode adopted by the second base station to the first base station.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner, if the second base station fixedly forms multiple beams by using a first beam pattern, each beam corresponds to a different antenna port, and information of the beam pattern includes: first indication information for indicating that a beam pattern adopted by the second base station is a first beam pattern, and antenna port information corresponding to each beam of the second base station;

With reference to the second aspect, in a third possible implementation manner, the method further includes:

the second base station transmits load information on each beam of the second base station to the first base station.

With reference to the second aspect or any one of the first to third possible implementation manners of the second aspect, in a fourth possible implementation manner, the method further includes:

the second base station receives configuration information, sent by the first base station, of reference signals for measurement, configured by the first base station for the terminal on each beam of the second base station; or

After receiving the configuration request sent by the first base station, the second base station configures a reference signal for measurement on each beam of the second base station for the terminal, and sends configuration information of the reference signal to the first base station.

With reference to the second aspect or any one of the first to fourth possible implementation manners of the second aspect, in a fifth possible implementation manner, the obtaining, by the second base station, a target beam capable of serving a terminal that has accessed the first base station in a beam of the second base station includes:

and the second base station receives the information of the target beam and the identification information of the terminal sent by the first base station to obtain the target beam.

With reference to the second aspect, or any one of the first to fourth possible implementation manners of the second aspect, in a sixth possible implementation manner, before the second base station obtains a target beam, which can serve a terminal that has accessed the first base station, in a beam of the second base station, the method further includes:

the second base station receives measurement information sent by the first base station, wherein the measurement information is obtained by the terminal measuring reference signals on each wave beam of the second base station;

the second base station obtaining a target beam capable of serving a terminal having access to the first base station from among beams of the second base station, including: and the second base station determines the target beam according to the measurement information and/or the load information on each beam of the second base station.

With reference to the second aspect, in a seventh possible implementation manner, the method further includes: the second base station receives information obtained by current measurement of the first base station, which is sent by the first base station, wherein the information obtained by current measurement of the first base station at least comprises a DOA (direction of arrival) between the terminal and the first base station;

the second base station obtaining a target beam capable of serving a terminal having access to the first base station from among beams of the second base station, including: and the second base station determines the antenna weight of the second base station according to the at least one type of information so as to form a target beam capable of serving the terminal.

With reference to the sixth possible implementation manner of the second aspect or the seventh possible implementation manner of the second aspect, in an eighth possible implementation manner, after the second base station obtains a target beam, which can serve a terminal that has accessed the first base station, in a beam of the second base station, the method further includes:

and the second base station sends the information of the target wave beam and the identification information of the terminal to the first base station.

With reference to the seventh possible implementation manner of the second aspect, in a ninth possible implementation manner, if the second base station fixedly forms multiple beams by using the first beam pattern, each beam corresponds to a different antenna port, and the measurement information includes:

In a third aspect, a base station is applied to a communication system including the base station and a second base station, and the base station includes:

a target beam obtaining module, configured to obtain a target beam, which can serve a terminal that has accessed the base station, in a beam of the second base station;

and the sending module is used for sending part or all downlink data of the terminal to the second base station so that the second base station sends the downlink data to the terminal through the target beam.

With reference to the third aspect, in a first possible implementation manner, the base station further includes:

a receiving module, configured to receive information of a beam pattern adopted by the second base station and sent by the second base station.

With reference to the third aspect, the first possible implementation manner of the third aspect, or the second possible implementation manner of the third aspect, in a third possible implementation manner, the base station further includes: a reference signal configuration module, configured to configure, for the terminal, a reference signal for measurement on each beam of the second base station; the sending module is further configured to: sending the configuration information of the reference signal to the terminal;

or

The sending module is further configured to: sending a configuration request to the second base station to request the second base station to configure a reference signal for the terminal on each beam of the second base station for measurement; the receiving module is further configured to: receiving configuration information of reference signals for measurement, configured by the second base station on all beams of the second base station for the terminal; the sending module is further configured to: and sending the configuration information to the terminal.

With reference to the third possible implementation manner of the third aspect, in a fourth possible implementation manner, the target beam obtaining module is specifically configured to:

determining the target beam based on measurement information reported by the terminal, wherein the measurement information is obtained by measuring reference signals on each beam of the second base station by the terminal;

or

And determining the target beam based on the measurement information reported by the terminal and the received load information on each beam of the second base station, which is sent by the second base station, wherein the measurement information is obtained by measuring, by the terminal, the reference signal on each beam of the second base station.

With reference to the third possible implementation manner of the third aspect, in a fifth possible implementation manner, the sending module is further configured to: sending measurement information reported by the terminal to the second base station, wherein the measurement information is obtained by measuring reference signals on different beams of the second base station by the terminal;

the receiving module is further configured to: and receiving information of a target beam sent by the second base station to obtain the target beam.

With reference to the fourth possible implementation manner of the third aspect or the fifth possible implementation manner of the third aspect, in a sixth possible implementation manner, if the second base station fixedly forms multiple beams by using the first beam pattern, each beam corresponding to a different antenna port, the measurement information includes:

With reference to the third aspect, in a seventh possible implementation manner, the base station is co-located with the second base station, and the target beam obtaining module is specifically configured to:

comparing the currently measured DOA between the terminal and the base station with the stored DOA; determining the DOA with the minimum difference value with the current DOA of the terminal from the stored DOAs, and determining the beam corresponding to the determined DOA as the target beam; or

Comparing the DOA between the terminal and the base station obtained by current measurement with the stored different DOA ranges; determining the DOA range in which the current DOA of the terminal is positioned, and determining part or all of the beams corresponding to the determined DOA range as the target beams; or

Comparing the currently measured path loss information and DOA between the terminal and the base station with the combination formed by each set of stored path loss information and DOA; determining a combination with the smallest difference between the current path loss information and the DOA of the terminal from the stored combinations, and determining a beam corresponding to the determined combination as the target beam; or

Comparing the currently measured path loss information and DOA between the terminal and the base station with the range of the combination formed by the stored different path loss information and DOA; and determining the range of the combination of the current path loss information of the terminal and the DOA, and determining part or all of the beams corresponding to the range of the determined combination as the target beams.

With reference to the third aspect, in an eighth possible implementation manner, the base station is co-sited with the second base station,

the sending module is further configured to: sending information obtained by current measurement of the base station to the second base station, wherein the information obtained by current measurement of the base station at least comprises DOA between the terminal and the base station;

the receiving module is further configured to: receiving information of a target beam formed by the second base station and transmitted by the second base station;

the target beam obtaining module is specifically configured to: and determining the target beam corresponding to the information of the target beam.

With reference to the fourth possible implementation manner of the third aspect or the seventh possible implementation manner of the third aspect, in a ninth possible implementation manner, the sending module is further configured to:

and sending the information of the target beam and the identification information of the terminal to the second base station.

With reference to the third aspect or any one of the first to ninth possible implementation manners of the third aspect, in a tenth possible implementation manner, the sending module is further configured to:

and sending the information of the target beam to the terminal.

With reference to the second possible implementation manner of the third aspect, in an eleventh possible implementation manner, the sending module is further configured to:

and sending the information of the beam mode adopted by the second base station, which is received by the receiving module, to the terminal.

In a fourth aspect, a base station is applied to a communication system including a first base station and the base station, and the base station includes:

a target beam obtaining module, configured to obtain a target beam capable of serving a terminal that has accessed the first base station, from among beams of the base stations;

a receiving module, configured to receive part or all of downlink data of the terminal sent by the first base station;

and the sending module is used for sending the downlink data to the terminal through the target beam.

With reference to the fourth aspect, in a first possible implementation manner, the sending module is further configured to:

and sending information of the beam mode adopted by the second base station to the first base station.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner, if the base station fixedly forms multiple beams by using a first beam pattern, each beam corresponds to a different antenna port, and information of the beam pattern includes: first indication information for indicating that a beam mode adopted by the base station is a first beam mode, and antenna port information corresponding to each beam of the base station;

if the base station forms different beams in different time intervals by using a second beam pattern, the information of the beam pattern includes: second indication information for indicating that the beam pattern adopted by the base station is a second beam pattern, and information of a time interval corresponding to each beam of the base station.

With reference to the fourth aspect, in a third possible implementation manner, the sending module is further configured to:

transmitting load information on each beam of the second base station to the first base station.

With reference to the fourth aspect or any one of the first to third possible implementation manners of the fourth aspect, in a fourth possible implementation manner, the base station further includes: a second reference signal configuration module, configured to configure, for the terminal, a reference signal for measurement on each beam of the second base station after the receiving module receives the configuration request sent by the first base station; the sending module is further configured to: sending the configuration information of the reference signal to the first base station;

or

The receiving module is further configured to: and receiving configuration information of the reference signals which are configured for the terminal on each beam of the second base station for measurement and sent by the first base station.

With reference to the fourth aspect or any one of the first to fourth possible implementation manners of the fourth aspect, in a fifth possible implementation manner, the receiving module is further configured to:

and receiving the information of the target beam and the identification information of the terminal sent by the first base station to obtain the target beam.

With reference to the fourth aspect or any one of the first to fourth possible implementation manners of the fourth aspect, in a sixth possible implementation manner, the receiving module is further configured to: receiving measurement information sent by the first base station, wherein the measurement information is obtained by measuring reference signals on each wave beam of the second base station by the terminal;

the target beam obtaining module is specifically configured to: and determining the target beam according to the measurement information and/or the load information on each beam of the second base station.

With reference to the fourth aspect, in a seventh possible implementation manner, the receiving module is further configured to: receiving information currently measured by the first base station, wherein the information currently measured by the first base station at least comprises a DOA between the terminal and the first base station;

the target beam obtaining module is specifically configured to: and determining the antenna weight of the base station according to the received information so as to form a target beam capable of serving the terminal.

With reference to the sixth possible implementation manner of the fourth aspect or the seventh possible implementation manner of the fourth aspect, in an eighth possible implementation manner, the sending module is further configured to:

and sending the information of the target beam and the identification information of the terminal to the first base station.

With reference to the seventh possible implementation manner of the fourth aspect, in a ninth possible implementation manner, if the base station uses the first beam pattern to fixedly form a plurality of beams, each beam corresponding to a different antenna port, where the measurement information includes:

if the base station forms different beams in different time intervals by using a second beam mode, the measurement information includes:

the terminal measures a measured value obtained by measuring a reference signal on an antenna port of the base station to obtain information of a time interval in which the reference signal is positioned, wherein the measured value is greater than or equal to a set measurement threshold; or information of different time intervals and a measured value obtained by measuring a reference signal on an antenna port of the base station by the terminal in different time intervals; or the terminal measures the maximum measured value in the measured values obtained by the reference signal on the antenna port of the base station and the relevant information of the corresponding time interval; or the terminal measures the first N maximum measurement values and the relevant information of the corresponding time intervals in the measurement values obtained by the reference signals on the antenna port of the base station, wherein N is a positive integer.

In a fifth aspect, a base station is applied to a communication system including the base station and a second base station, and the base station includes: a processor, a first transceiver, a second transceiver, a communication interface, and a system bus. Wherein: the processor and the communication interface are connected through the system bus and complete mutual communication; the communication interface is used for interacting with other communication equipment; the first transceiver is used for carrying out data transmission with a second base station; the second transceiver is used for carrying out data transmission with a terminal;

the processor is configured to obtain a target beam capable of serving a terminal having access to the base station, from among beams of the second base station;

the first transceiver is configured to send part or all of downlink data of the terminal to the second base station, so that the second base station sends the downlink data to the terminal through the target beam.

With reference to the fifth aspect, in a first possible implementation manner, the first transceiver is further configured to:

and receiving the information of the beam mode adopted by the second base station, which is sent by the second base station.

With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation manner, if the second base station fixedly forms multiple beams by using a first beam pattern, each beam corresponds to a different antenna port, and information of the beam pattern includes: first indication information for indicating that a beam pattern adopted by the second base station is a first beam pattern, and antenna port information corresponding to each beam of the second base station;

With reference to the fifth aspect, the first possible implementation manner of the fifth aspect, or the second possible implementation manner of the fifth aspect, in a third possible implementation manner, the processor is further configured to:

configuring a reference signal for measurement on each beam of the second base station for the terminal, and sending configuration information of the reference signal to the terminal; the second transceiver is further configured to: sending the configuration information to the terminal;

or

The first transceiver is further configured to: sending a configuration request to the second base station to request the second base station to configure a reference signal for the terminal on each beam of the second base station for measurement; receiving configuration information of reference signals for measurement, configured by the second base station on all beams of the second base station for the terminal; the second transceiver is further configured to: and sending the configuration information to the terminal.

With reference to the third possible implementation manner of the fifth aspect, in a fourth possible implementation manner, the processor is specifically configured to:

or

With reference to the third possible implementation manner of the fifth aspect, in a fifth possible implementation manner, the first transceiver is further configured to: sending the measurement information reported by the terminal and received by the second transceiver to the second base station, wherein the measurement information is obtained by measuring the reference signals on each wave beam of the second base station by the terminal; and receiving information of a target beam sent by the second base station to obtain the target beam.

With reference to the fourth possible implementation manner of the fifth aspect or the fifth possible implementation manner of the fifth aspect, in a sixth possible implementation manner, if the second base station fixedly forms multiple beams by using the first beam pattern, each beam corresponds to a different antenna port, and the measurement information includes:

With reference to the fifth aspect, in a seventh possible implementation manner, the base station and the second base station share a station, and as a third optional target beam obtaining manner, the processor is specifically configured to:

With reference to the fifth aspect, in an eighth possible implementation manner, the base station is co-sited with the second base station,

the first transceiver is further configured to: sending information obtained by current measurement of the base station to the second base station, wherein the information obtained by current measurement of the base station at least comprises DOA between the terminal and the base station; receiving information of a target beam formed by the second base station and transmitted by the second base station;

the processor is specifically configured to: and determining the target beam corresponding to the information of the target beam.

With reference to the fourth possible implementation manner of the fifth aspect or the seventh possible implementation manner of the fifth aspect, in a ninth possible implementation manner, based on the first optional target beam obtaining manner or the third optional target beam obtaining manner, the first transceiver is further configured to:

With reference to the fifth aspect or any one of the first to ninth possible implementation manners of the fifth aspect, in a tenth possible implementation manner, the second transceiver is further configured to:

and sending the information of the target beam to the terminal.

With reference to the second possible implementation manner of the fifth aspect, in an eleventh possible implementation manner, the second transceiver is configured to send the received information of the beam pattern adopted by the second base station to the terminal.

In a sixth aspect, a base station is applied to a communication system including a first base station and the base station, and the base station includes: a processor, a first transceiver, a second transceiver, a communication interface, and a system bus; wherein:

the processor and the communication interface are connected through the system bus and complete mutual communication; the communication interface is used for interacting with other communication equipment; the first transceiver is used for carrying out data transmission with a second base station; the second transceiver is used for carrying out data transmission with a terminal;

the processor is configured to obtain a target beam capable of serving a terminal having access to the first base station from among beams of the base stations;

the first transceiver is configured to receive part or all of downlink data of the terminal sent by the first base station;

and the second transceiver is used for transmitting the downlink data to the terminal through the target wave beam.

With reference to the sixth aspect, in a first possible implementation manner, the first transceiver is further configured to:

With reference to the first possible implementation manner of the sixth aspect, in a second possible implementation manner, if the base station fixedly forms multiple beams by using a first beam pattern, each beam corresponds to a different antenna port, and information of the beam pattern includes: first indication information for indicating that a beam mode adopted by the base station is a first beam mode, and antenna port information corresponding to each beam of the base station;

With reference to the sixth aspect, in a third possible implementation manner, the first transceiver is further configured to:

With reference to the sixth aspect or any one of the first to third possible implementation manners of the sixth aspect, in a fourth possible implementation manner, the processor is further configured to: after the first transceiver receives the configuration request sent by the first base station, configuring a reference signal for measurement on each beam of the second base station for the terminal; the first transceiver is further configured to: sending the configuration information of the reference signal to the first base station;

or

The first transceiver is further configured to: and receiving configuration information of the reference signals which are configured for the terminal on each beam of the second base station for measurement and sent by the first base station.

With reference to the sixth aspect or any one of the first to fourth possible implementation manners of the sixth aspect, in a fifth possible implementation manner, the first transceiver is further configured to:

With reference to the sixth aspect or any one of the first to fourth possible implementation manners of the sixth aspect, in a sixth possible implementation manner, the first transceiver is further configured to: receiving measurement information sent by the first base station, wherein the measurement information is obtained by measuring reference signals on each wave beam of the second base station by the terminal;

the processor is specifically configured to: and determining the target beam according to the measurement information and/or the load information on each beam of the second base station.

With reference to the sixth aspect, in a seventh possible implementation manner, the first transceiver is further configured to: receiving information currently measured by the first base station, wherein the information currently measured by the first base station at least comprises a DOA between the terminal and the first base station;

the processor is specifically configured to: and determining the antenna weight of the base station according to the received information so as to form a target beam capable of serving the terminal.

With reference to the sixth possible implementation manner of the sixth aspect or the seventh possible implementation manner of the sixth aspect, in an eighth possible implementation manner, the first transceiver is further configured to:

With reference to the seventh possible implementation manner of the sixth aspect, in a ninth possible implementation manner, if the base station uses the first beam pattern to fixedly form a plurality of beams, each beam corresponding to a different antenna port, where the measurement information includes:

In a seventh aspect, a communication system includes:

a first base station, configured to obtain a target beam capable of serving a terminal that has accessed the first base station, from among beams of the second base station; sending part or all downlink data of the terminal to the second base station, so that the second base station sends the downlink data to the terminal through the target beam;

a second base station, configured to obtain a target beam, which can serve a terminal that has accessed the first base station, in a beam of the second base station; and receiving part or all downlink data of the terminal sent by the first base station, and sending the downlink data to the terminal through the target wave beam.

In the method, the device and the system provided by the embodiment of the invention, a first base station obtains a target beam which can serve a terminal accessed to the first base station in a beam of a second base station; and sending part or all downlink data of the terminal to the second base station so that the second base station sends the received downlink data to the terminal through the target beam, and thus, under the assistance of the first base station, the terminal can establish a downlink data link with the second base station, so that the resource utilization rate of the second base station is improved, the load of the first base station is reduced, and the throughput rate of the terminal is improved.

In an eighth aspect, a data transmission method is applied to a communication system including a first base station and a second base station, and the method includes:

the first base station receives measurement information reported by a terminal, wherein the measurement information is obtained by measuring reference signals on different wave beams of the second base station by the terminal;

the first base station sends the measurement information to a network node so that the network node determines a target beam capable of serving a terminal accessed to the first base station in beams of the second base station according to the measurement information, the network node is a central node or the second base station, the central node is connected with a core network, and the first base station and the second base station communicate through the central node.

For the measurement information, reference is specifically made to the related description in the first aspect, which is not described herein again.

In a possible embodiment, the method further comprises: and the first base station sends part or all of the bearing information of the terminal to the second base station, wherein the bearing information is used for indicating the second base station to establish corresponding bearing.

In a possible implementation, after the first base station sends the measurement information to a network node, the method further includes:

the first base station receives information of a target beam sent by the network node;

In a ninth aspect, a data transmission method is applied to a communication system including a first base station and a second base station, and the method includes:

and the second base station performs data transmission with the terminal through the target wave beam.

In a possible embodiment, the method further comprises: the second base station receives part or all of bearing information of the terminal sent by a network node, wherein the network node is the first base station or a central node, the central node is connected with a core network, and the first base station and the second base station are communicated through the central node; establishing corresponding load according to the load information; acquiring data corresponding to the bearer from a core network;

the second base station performs data transmission with the terminal through the target beam, including: and the second base station sends the data corresponding to the load to the terminal through the target wave beam.

In a possible embodiment, the obtaining, by the second base station, a target beam capable of serving a terminal that has accessed the first base station in a beam of the second base station includes:

and the second base station receives the information of the target beam and the identification information of the terminal sent by a central node to obtain the target beam, wherein the central node is connected with a core network, and the first base station and the second base station are communicated through the central node.

In a possible implementation manner, before the second base station obtains a target beam capable of serving a terminal having access to the first base station in a beam of the second base station, the method further includes: the second base station receives measurement information sent by the network node, wherein the measurement information is obtained by measuring reference signals on each wave beam of the second base station by the terminal, the network node is the first base station or a central node, the central node is connected with a core network, and the first base station and the second base station communicate through the central node;

In a tenth aspect, a data transmission method is applied to a communication system including a first base station, a second base station, and a central node, where the central node is connected to a core network, and the first base station and the second base station communicate with each other through the central node, and the method includes:

the central node receives measurement information sent by the first base station, wherein the measurement information is obtained by measuring reference signals on different wave beams of the second base station by the terminal;

the central node determines a target beam capable of serving the terminal accessed to the first base station in the beams of the second base station according to the measurement information;

and the central node sends the information of the target beam to the second base station.

In a possible embodiment, the method further comprises: and the central node sends the information of the target beam to the first base station.

In an eleventh aspect, a base station is provided for a communication system comprising the base station and a second base station, and the base station comprises means for performing the method in the eighth aspect.

In a twelfth aspect, a base station is provided, which is applied to a communication system including a first base station and the base station, and the base station includes means for performing the method in the ninth aspect.

In a thirteenth aspect, a central node is provided, which is applied to a communication system including a first base station, a second base station and a central node, where the central node is connected to a core network, and the first base station and the second base station communicate with each other through the central node, and the central node includes means for performing the method in the tenth aspect.

In a fourteenth aspect, a base station is provided for use in a communication system including the base station and a second base station, the base station including a processor, a first transceiver, a second transceiver, a communication interface, and a system bus. Wherein: the processor, the first transceiver and the second transceiver perform the method of the eighth aspect.

In a fifteenth aspect, a base station is provided for use in a communication system including the base station and a second base station, the base station including a processor, a first transceiver, a second transceiver, a communication interface, and a system bus. Wherein: the processor, the first transceiver and the second transceiver perform the method of the ninth aspect.

In a sixteenth aspect, a central node is provided, which is applied to a communication system including a first base station, a second base station, and a central node, where the central node is connected to a core network, the first base station and the second base station communicate with each other through the central node, and the central node includes a processor, a transceiver, a communication interface, and a system bus. Wherein: the processor and the transceiver perform the method of the tenth aspect.

In the embodiment of the present invention, after receiving measurement information reported by a terminal, a first base station sends the measurement information to a network node (i.e., a second base station or a central node), so that the network node determines, according to the measurement information, a target beam capable of serving the terminal that has accessed to the first base station in beams of the second base station, thereby enabling the second base station and the terminal to perform data transmission through the target beam. Because the first base station can transfer part or all of the services of the terminal on the first base station to the second base station for transmission, the resource utilization rate of the second base station is improved, the load of the first base station is reduced, and the throughput rate of the terminal is improved.

Drawings

Fig. 1 is a schematic diagram of a network architecture of a high frequency small station and a low frequency macro station;

fig. 2 is a schematic diagram of a data transmission method at a first base station side according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a second base station adopting a first beam pattern according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a second base station adopting a second beam pattern according to an embodiment of the present invention;

fig. 5 is a schematic diagram illustrating a first base station and a second base station co-located according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a data transmission method at a second base station side according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a first base station according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a second base station according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a third base station according to an embodiment of the present invention;

fig. 10 is a schematic diagram of a fourth base station according to an embodiment of the present invention;

fig. 11 is a schematic diagram of a communication system provided by an embodiment of the present invention;

fig. 12 is a schematic diagram of a data transmission method at a first base station side according to an embodiment of the present invention;

fig. 13A is a schematic diagram of a first network architecture according to an embodiment of the present invention;

fig. 13B is a schematic diagram of a second network architecture according to an embodiment of the present invention;

fig. 14 is a schematic diagram of a data transmission method at a second base station side according to an embodiment of the present invention;

fig. 15 is a schematic diagram of a data transmission method at a central node side according to an embodiment of the present invention;

fig. 16 is a schematic diagram of a first central node according to an embodiment of the present invention;

fig. 17 is a schematic diagram of a second central node according to an embodiment of the present invention.

Detailed Description

The techniques described herein may be used in various communication systems, such as current 2G, 3G, 4G communication systems and next generation communication systems, such as Global System for Mobile communications (GSM), Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Wideband Code Division Multiple Access (WCDMA), Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, FDMA (SC-FDMA) systems, General Packet Radio Service (GPRS) systems, Long Term Evolution (Long Term Evolution, LTE), and other types of communication systems.

The embodiment of the invention can be suitable for a networking structure that the first base station is a macro base station and the second base station is a small station, can also be suitable for a networking structure that the first base station is a macro base station and the second base station is a macro base station, and can also be suitable for a networking structure that the first base station is a small station and the second base station is a small station. The embodiment of the present invention does not limit an applicable networking structure.

The macro Base Station may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, or an evolved Node B (NodeB or eNB or e-NodeB) in LTE, which is not limited in the embodiment of the present invention.

The small stations include but are not limited to the following: micro base stations (Micro), Pico base stations (Pico), and home base stations (Femto, also called Femto base stations), which are not limited in the embodiments of the present invention.

The terminal in the embodiments of the present invention may be a wireless terminal or a wired terminal, and the wireless terminal may be a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem. A wireless terminal may communicate with one or more core networks via a radio access network (e.g., ran); the wireless terminals may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers having mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, that exchange language and/or data with a radio access network. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like.

In the embodiments of the present invention, the communication system and the communication network are equivalent in concept, for example, the communication network including the first base station and the second base station is equivalent to the communication system including the first base station and the second base station, and the embodiments of the present invention will be described in the context of the communication system in a unified manner.

The embodiments of the present invention will be described in further detail with reference to the drawings attached hereto. It is to be understood that the embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.

An embodiment of the present invention provides a data transmission method on a first base station side, which is applied to a communication system including a first base station and a second base station, and as shown in fig. 2, the method includes:

s21, the first base station obtains a target beam which can serve a terminal accessed to the first base station in the beams of the second base station;

s22, the first base station sends part or all of the downlink data of the terminal to the second base station, so that the second base station sends the received downlink data to the terminal through the target beam.

The downlink data of the terminal refers to data that the first base station needs to send to the terminal.

In the embodiment of the invention, a first base station obtains a target beam which can serve a terminal accessed to the first base station in beams of a second base station; and sending part or all downlink data of the terminal to the second base station so that the second base station sends the received downlink data to the terminal through the target beam, and thus, under the assistance of the first base station, the terminal can establish a downlink data link with the second base station, so that the resource utilization rate of the second base station is improved, the load of the first base station is reduced, and the throughput rate of the terminal is improved.

In the embodiment of the present invention, the number of target beams obtained by the first base station may be one, or may be two or more, and the number of target beams is not limited in the embodiment of the present invention.

In this embodiment of the present invention, the obtaining, by the first base station, the target beam in S21 includes the following optional implementation manners:

in the mode 1, the first base station determines the target beam based on the measurement information reported by the terminal; the measurement information is obtained by the terminal measuring the reference signals on each beam of the second base station.

In this way, the method provided by the embodiment of the present invention further includes: and the first base station sends the information of the target wave beam and the identification information of the terminal to the second base station.

For example, the determining, by the first base station, the target beam based on the measurement information reported by the terminal includes:

and the first base station selects the beam with the best signal quality from the measurement information reported by the terminal, and determines the selected beam as the target beam.

Wherein the signal quality may be represented by, but is not limited to, at least one of the following information:

reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Channel Quality Indicator (CQI), Received Signal Strength Indicator (RSSI).

For example, if the second base station fixedly forms multiple beams by using the first beam pattern, the information of the target beam may be identification information of a port corresponding to the target beam; if the second base station forms different beams in different time intervals by using a second beam mode, the information of the target beam may be a time interval corresponding to the target beam; if the second base station forms different beams in different time intervals by using a second beam pattern, and the second base station includes at least two ports, the information of the target beam may be the time interval corresponding to the target beam and the identification information of the port corresponding to the target beam.

In this manner, optionally, the method further includes: and the first base station receives the load information on each beam of the second base station, which is transmitted by the second base station.

Correspondingly, the determining, by the first base station, the target beam according to the measurement information reported by the terminal includes: and the first base station determines the target beam according to the measurement information reported by the terminal and the load information on each beam of the second base station.

In the method 2, the second base station determines the target beam based on the measurement information of the terminal sent by the first base station, and sends the information of the target beam to the first base station. The specific behavior of the first base station side is as follows:

before the first base station obtains the target beam, the method comprises the following steps: the first base station sends measurement information reported by the terminal to the second base station, wherein the measurement information is obtained by measuring reference signals on each wave beam of the second base station by the terminal;

the first base station obtaining the target beam, including: and the first base station receives the information of the target beam sent by the second base station to obtain the target beam.

Based on the foregoing mode 1 or mode 2, optionally, the method provided in the embodiment of the present invention further includes: and the first base station receives the information of the beam mode adopted by the second base station, which is sent by the second base station.

Further, after the first base station receives the information of the beam pattern adopted by the second base station, the method further includes:

and the first base station sends the information of the beam mode adopted by the second base station to the terminal, so that the terminal can acquire the beam mode adopted by the second base station and each beam of the second base station, and a reference signal is measured.

As an implementation manner, if the second base station fixedly forms a plurality of beams by using a first beam pattern, each beam corresponds to a different antenna port, the information of the beam pattern includes: first indication information for indicating that the beam pattern adopted by the second base station is a first beam pattern, and information of an antenna port corresponding to each beam of the second base station.

For example, each beam formed by the second base station may correspond to one antenna port, or may correspond to one or more antenna ports, that is, the correspondence between the beams and the antenna ports may be one-to-one, or one-to-many, and the correspondence between the beams and the antenna ports is not limited herein.

Optionally, the information of the beam pattern further includes: a number of beams of the second base station.

Specifically, in the first beam mode, the second base station has M beams, where M is a positive integer, each beam corresponds to a different antenna port of the second base station, each beam is configured with a different reference signal, it is ensured that the reference signal position corresponding to each antenna port is different, the reference signal adopts a pseudo-random sequence, when the terminal performs measurement, the terminal obtains antenna port information through the position of the reference signal and the pseudo-random sequence, and the antenna port performs measurement on the reference signal to obtain signal strength or signal quality, as shown in fig. 3.

As another implementation manner, if the second base station forms different beams in different time intervals by using a second beam pattern, the information of the beam pattern includes: second indication information for indicating that the beam pattern adopted by the second base station is a second beam pattern, and information of a time interval corresponding to each beam of the second base station.

Specifically, when the number of antenna ports of the second base station is small and fixed beams greater than the number of antenna ports cannot be provided, different beams may be formed by using a set beam polling mode, that is, different beams are formed in different time intervals, and each beam is configured with different reference signals. For example, for three cells, in each cell service direction, a beam is used for periodic polling, as shown in fig. 4. Forming a beam 1 in subframes 1 and 2 by taking an LTE frame length as a period; in subframes 3 and 4, beam 2 is formed; and so on.

Optionally, the information related to the time interval includes: and the number information corresponds to the time interval.

Optionally, if the subframe is used as the minimum time unit, the related information of the time interval includes: information of subframes contained in the time interval.

For example, the first indication information and the second indication information may be represented by 1-bit information, and if the bit information is "0", the beam mode adopted by the second base station is the first beam mode, that is, the first indication information; if the bit information is "1", it indicates that the beam pattern adopted by the second base station is the second beam pattern, that is, the second indication information.

Based on the foregoing mode 1 or mode 2, optionally, the method provided in the embodiment of the present invention further includes:

The first base station sends a configuration request to the second base station to request the second base station to configure a reference signal for the terminal on each beam of the second base station for measurement; and the first base station receives configuration information of the reference signals which are configured on each beam of the second base station for the terminal by the second base station and are used for measurement, and sends the configuration information to the terminal.

Specifically, the reference signals on different beams of the second base station may be configured by the first base station, and notify the terminal of the configuration information; or the second base station can configure itself and send configuration information to the first base station.

Based on the foregoing mode 1 or mode 2, optionally, the method provided in the embodiment of the present invention further includes: and the first base station instructs the terminal to measure the reference signal on the antenna port contained in the second base station.

Optionally, the Reference signal configured by the first base station is a channel state Information-Reference Signals (CSI-RS).

Based on the foregoing mode 1 or mode 2, if the second base station fixedly forms a plurality of beams by using the first beam pattern, each beam corresponds to a different antenna port, where the measurement information includes:

the terminal measures the measured values which are greater than or equal to a set measurement threshold in the measured values obtained by the reference signal and the identification information of the antenna port corresponding to the measured values; or the terminal measures all measured values obtained by the reference signal and identification information of the antenna port corresponding to the measured values; or the terminal measures the maximum measured value in the measured values obtained by the reference signal and the identification information of the antenna port corresponding to the maximum measured value; or the terminal measures the first N maximum measurement values in the measurement values obtained by the reference signal and the identification information of the antenna ports corresponding to the maximum measurement values, wherein N is a positive integer.

Wherein, the value of N can be set as required, for example, the value of N is configured to be 3.

Based on the foregoing mode 1 or mode 2, if the second base station forms different beams in different time intervals by using the second beam pattern, the measurement information includes:

The above modes 1 and 2 are applicable to various deployment modes of the first base station and the second base station. For example, the first base station and the second base station are co-located (co-located); for another example, the first base station and the second base station are not co-sited.

In a deployment mode that the first base station and the second base station are co-located, in S21, the first base station obtains the target beam, which further includes the following optional implementation manners:

in mode 3, the first base station and the second base station share a common station (co-located), as shown in fig. 5, the first base station and the second base station are deployed on the same site. In this scenario, the obtaining, by the first base station, the target beam includes the following four optional implementation manners:

the first base station stores historical data of corresponding relations between different DOAs and beams of the second base station, and the first base station can compare the currently measured DOA of the terminal with the stored DOA and select the beam of the second base station corresponding to the DOA with the closest data as the target beam. The method specifically comprises the following steps:

the first base station compares the DOA between the terminal and the first base station obtained by current measurement with the stored DOA; and the first base station determines the DOA with the minimum difference value with the current DOA of the terminal from the stored DOAs, and determines the beam corresponding to the determined DOA as the target beam.

For example, the corresponding relationship between the different DOAs and the beam of the second base station is that the first base station has measured the DOA of any terminal, and finally the first base station successfully establishes a data link with the second base station through the beam 1 of the second base station, and then the first base station stores the corresponding relationship between the DOA of any terminal and the beam 1 of the second base station.

The first base station may compare the currently measured path loss information and DOA of the terminal with the stored combinations, select a combination that is closest to the currently measured path loss information and DOA data of the terminal from the stored combinations, and use the beam of the second base station corresponding to the combination as the target beam. The method specifically comprises the following steps:

the first base station compares the currently measured path loss information and DOA between the terminal and the first base station with the combination formed by each set of stored path loss information and DOA; and the first base station determines a combination with the minimum difference value between the current path loss information and the DOA of the terminal from the stored combinations, and determines a beam corresponding to the determined combination as the target beam.

The first base station stores historical data of corresponding relations between different DOA ranges and beams of the second base station, and the first base station can compare the currently measured DOA of the terminal with the stored DOA ranges and take the beams of the second base station corresponding to the DOA range where the currently measured DOA is located as the target beams. The method specifically comprises the following steps:

the first base station compares the current measured incoming wave direction DOA between the terminal and the first base station with the stored different DOA ranges; and the first base station determines the DOA range in which the current DOA of the terminal is positioned, and determines part or all of the beams corresponding to the determined DOA range as the target beams.

For example, if at least two beams corresponding to the determined DOA range are determined, when some or all of the beams corresponding to the determined DOA range are determined as the target beams, some of the beams may be randomly selected as the target beams, or all of the beams corresponding to the determined DOA range may be determined as the target beams; the terminal may also be instructed to measure the beam corresponding to the determined DOA range, and select a beam with the largest measurement value from the measurement information as the target beam based on the measurement information of the beam corresponding to the determined DOA range.

And fourthly, the first base station stores historical data of the corresponding relation between the range of the combination formed by different path loss information and DOA and the beam of the second base station, and the first base station can compare the currently measured path loss information and DOA of the terminal with the stored range of the combination and take the beam of the second base station corresponding to the range of the combination where the currently measured DOA is located as the target beam. The method specifically comprises the following steps:

the first base station compares the current measured path loss information and DOA between the terminal and the first base station with the range of the combination formed by different stored path loss information and DOA; and the first base station determines the range of the combination of the current path loss information and the DOA of the terminal, and determines the beam corresponding to the determined range of the combination as the target beam.

In this way, optionally, the method provided in the embodiment of the present invention further includes: and the first base station sends the information of the target wave beam to the second base station.

In mode 4, the first base station and the second base station share a common station, and the first base station obtains the target beam as follows:

In this way, the first base station sends the currently measured DOA between the terminal and the first base station to the second base station, and since the first base station and the second base station are co-located, the distance and DOA between the second base station and the terminal may be considered to be the same as the distance and DOA between the first base station and the terminal, so that the second base station may refer to the DOA between the first base station and the terminal to dynamically form a beam capable of serving the terminal.

Optionally, the information currently measured by the first base station further includes path loss information between the terminal and the first base station.

Accordingly, the second base station may dynamically form a beam capable of serving the terminal with reference to the path loss information and the DOA between the first base station and the terminal.

Based on any of the above embodiments, the method provided by the embodiment of the present invention further includes:

and the first base station sends the information of the target beam to the terminal, so that the terminal can monitor only on the target beam to receive the downlink data sent by the second base station without monitoring on each beam of the second base station.

Based on the same inventive concept, an embodiment of the present invention further provides a data transmission method at a second base station side, which is applied to a communication system including a first base station and a second base station, as shown in fig. 6, and the method includes:

s61, the second base station obtains a target beam which can serve a terminal accessed to the first base station in the beam of the second base station;

s62, the second base station receives part or all downlink data of the terminal sent by the first base station, and sends the downlink data to the terminal through the target beam.

In implementation, the method provided in the embodiment of the present invention further includes:

Optionally, if the second base station fixedly forms multiple beams by using the first beam pattern, each beam corresponds to a different antenna port, and the information of the beam pattern includes: first indication information for indicating that the beam pattern adopted by the second base station is a first beam pattern, and information of an antenna port corresponding to each beam of the second base station.

Optionally, if the second base station forms different beams in different time intervals by using a second beam pattern, the information of the beam pattern includes: second indication information for indicating that the beam pattern adopted by the second base station is a second beam pattern, and information of a time interval corresponding to each beam of the second base station.

Optionally, the method provided in the embodiment of the present invention further includes:

and the second base station sends the load information on each beam to the first base station.

Specifically, the second base station may actively send load information on each beam of the second base station to the first base station, or may send load information on each beam of the second base station to the first base station after receiving the request of the first base station.

In implementation, the second base station may send information of a beam pattern used by the second base station and load information on each beam of the second base station to the first base station in a message; the second base station may also send the configuration information and the load information on each beam of the second base station to the first base station in one message; the second base station may also send load information on each beam of the second base station to the first base station through a separate signaling message.

Based on any of the foregoing embodiments, as an optional implementation manner, the obtaining, by the second base station, the target beam in S61 includes:

As another optional implementation manner, before the second base station obtains the target beam in S61, the method further includes:

accordingly, the obtaining, by the second base station, the target beam in S61 includes: and the second base station determines the target beam according to the measurement information and/or the load information on each beam of the second base station.

Further, after the second base station obtains the target beam in S61, the method further includes:

Optionally, if the second base station fixedly forms multiple beams by using the first beam pattern, each beam corresponds to a different antenna port, and the measurement information includes:

Optionally, if the second base station forms different beams in different time intervals by using the second beam pattern, the measurement information includes:

As still another optional implementation manner, the method further includes:

the second base station receives information obtained by current measurement of the first base station, wherein the information obtained by current measurement of the first base station at least comprises DOA between the terminal and the first base station;

accordingly, the obtaining, by the second base station, the target beam in S61 includes: and the second base station determines the antenna weight of the second base station according to the received information so as to form a target beam capable of serving the terminal.

Optionally, the information obtained by the current measurement of the first base station further includes: path loss information between the terminal and the first base station.

Correspondingly, the second base station determines the antenna weight of the second base station according to the received path loss information and the DOA, so as to form a target beam capable of serving the terminal.

Further, after the second base station obtains the target beam in S61, the method includes: and the second base station sends the information of the target wave beam and the identification information of the terminal to the first base station.

Specifically, since the second base station is co-sited with the first base station, the second base station may refer to at least one of the DOA and the path loss information between the first base station and the terminal measured by the first base station, and calculate the antenna weight on the second base station accordingly. Meanwhile, the second base station may need to take at least one of a frequency difference, an antenna interval difference, and an antenna array difference between itself and the first base station into consideration to calibrate the obtained antenna weight. And the second base station determines the antenna weight of the second base station according to the at least one piece of information so as to form a target beam capable of serving the terminal.

The above method process flow may be implemented by a software program, which may be stored in a storage medium, and when the stored software program is called, the above method steps are performed.

Based on the same inventive concept, the embodiment of the present invention further provides a first base station, and since the problem solving principle of the base station is similar to that of the data transmission method shown in fig. 2, the implementation of the base station may refer to the implementation of the method shown in fig. 2, and repeated details are not repeated.

As shown in fig. 7, a first base station provided in an embodiment of the present invention is applied to a communication system including the base station and a second base station, where the base station includes:

a target beam obtaining module 71, configured to obtain a target beam capable of serving a terminal that has accessed the base station, from among the beams of the second base station;

a sending module 72, configured to send part or all of the downlink data of the terminal to the second base station, so that the second base station sends the downlink data to the terminal through the target beam.

In the embodiment of the present invention, the base station further includes:

a receiving module 73, configured to receive information of the beam pattern adopted by the second base station, where the information is sent by the second base station.

Optionally, if the second base station fixedly forms multiple beams by using the first beam pattern, each beam corresponds to a different antenna port, and the information of the beam pattern includes: first indication information for indicating that a beam pattern adopted by the second base station is a first beam pattern, and antenna port information corresponding to each beam of the second base station;

Optionally, the sending module 72 is further configured to:

In this embodiment of the present invention, as a selectable reference signal configuration manner, the base station further includes:

a reference signal configuring module 74, configured to configure, for the terminal, a reference signal for measurement on each beam of the second base station, and send configuration information of the reference signal to the terminal.

As another optional configuration of the reference signal, the sending module 72 is further configured to: sending a configuration request to the second base station to request the second base station to configure a reference signal for the terminal on each beam of the second base station for measurement; the receiving module 73 is further configured to: receiving configuration information of reference signals for measurement, configured by the second base station on all beams of the second base station for the terminal; the sending module is further configured to: and sending the configuration information to the terminal.

In this embodiment of the present invention, as a first optional target beam obtaining manner, the target beam obtaining module 71 is specifically configured to:

determining the target beam based on measurement information reported by the terminal, wherein the measurement information is obtained by measuring reference signals on each beam of the second base station by the terminal; or

As a second optional target beam obtaining manner, the sending module 72 is further configured to: sending measurement information reported by the terminal to the second base station, wherein the measurement information is obtained by measuring reference signals on each beam of the second base station by the terminal;

the receiving module 73 is further configured to: and receiving information of a target beam sent by the second base station to obtain the target beam.

The base station and the second base station share a common station, and as a third optional target beam obtaining manner, the target beam obtaining module 71 is specifically configured to:

The base station is co-sited with the second base station as a fourth optional target beam obtaining mode,

the sending module 72 is further configured to: sending information obtained by current measurement of the base station to the second base station, wherein the information obtained by current measurement of the base station at least comprises DOA between the terminal and the base station;

the receiving module 73 is further configured to: receiving information of a target beam formed by the second base station and transmitted by the second base station;

the target beam obtaining module 71 is specifically configured to: and determining the target beam corresponding to the information of the target beam.

Based on the first optional target beam obtaining manner or the third optional target beam obtaining manner, the sending module 72 is further configured to:

Based on any of the above embodiments, the sending module 72 is further configured to:

and sending the information of the target beam to the terminal.

Based on the same inventive concept, a second base station is also provided in the embodiments of the present invention, and since the principle of solving the problem of the base station is similar to the data transmission method shown in fig. 6, the implementation of the base station may refer to the implementation of the method shown in fig. 6, and repeated details are not repeated.

An embodiment of the present invention provides a second base station, which is applied to a communication system including a first base station and the base station, and as shown in fig. 8, the base station includes:

a target beam obtaining module 81, configured to obtain a target beam capable of serving a terminal that has accessed the first base station, from among the beams of the base stations;

a receiving module 82, configured to receive part or all of downlink data of the terminal sent by the first base station;

a sending module 83, configured to send the downlink data to the terminal through the target beam.

In this embodiment of the present invention, the sending module 83 is further configured to:

Optionally, if the base station uses a first beam pattern to fixedly form a plurality of beams, each beam corresponds to a different antenna port, and the information of the beam pattern includes: first indication information for indicating that a beam mode adopted by the base station is a first beam mode, and antenna port information corresponding to each beam of the base station;

Optionally, the sending module 83 is further configured to:

Based on any of the above embodiments, the base station further includes: a reference signal configuring module 84, configured to configure, for the terminal, a reference signal for measurement on each beam of the second base station after the receiving module 82 receives the configuration request sent by the first base station; the sending module 83 is further configured to: sending the configuration information of the reference signal to the first base station;

or

The receiving module 82 is further configured to: and receiving configuration information of the reference signals which are configured for the terminal on each beam of the second base station for measurement and sent by the first base station.

In this embodiment of the present invention, as a first optional target beam obtaining manner, the receiving module 82 is further configured to:

As a second optional target beam obtaining manner, the receiving module 82 is further configured to: receiving measurement information sent by the first base station, wherein the measurement information is obtained by measuring reference signals on each wave beam of the second base station by the terminal;

the target beam obtaining module 81 is specifically configured to: and determining the target beam according to the measurement information and/or the load information on each beam of the second base station.

As a third optional target beam obtaining manner, the receiving module 82 is further configured to: receiving information currently measured by the first base station, wherein the information currently measured by the first base station at least comprises a DOA between the terminal and the first base station;

the target beam obtaining module 81 is specifically configured to: and determining the antenna weight of the base station according to the received information so as to form a target beam capable of serving the terminal.

Correspondingly, the target beam obtaining module 81 determines the antenna weight of the base station according to the received path loss information and DOA, so as to form a target beam capable of serving the terminal.

Based on the second or third optional target beam obtaining manner, the sending module 83 is further configured to:

Optionally, if the base station uses the first beam mode to fixedly form a plurality of beams, each beam corresponds to a different antenna port, and the measurement information includes:

It should be noted that, the modules included in the base stations shown in fig. 7 and fig. 8 may be disposed in one base station, and when the base station is the first base station, the target beam obtaining module 71, the receiving module 73, the transmitting module 72, and the reference signal configuring module 74 are triggered to perform processing; when the base station is the second base station, the target beam obtaining module 81, the receiving module 82, the transmitting module 83, and the reference signal configuring module 84 are triggered to perform processing.

Based on the same inventive concept, a third base station is further provided in the embodiments of the present invention, and since the principle of the base station to solve the problem is similar to the data transmission method shown in fig. 2, the implementation of the base station may refer to the implementation of the method shown in fig. 2, and repeated details are not repeated.

As shown in fig. 9, a third base station provided in an embodiment of the present invention is applied to a communication system including the base station and a second base station, where the base station includes:

a processor 91, a first transceiver 92, a second transceiver 93, a communication interface 94, and a system bus 95. Wherein:

the processor 91 and the communication interface 94 are connected via the system bus 95 to complete communication therebetween. The processor 91 may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement embodiments of the present invention.

The communication interface 94 is used to interact with other communication devices.

The first transceiver 92 is used for data transmission with other base stations, such as a second base station.

The second transceiver 93 is used for data transmission with the terminal.

It is to be understood that the first transceiver 92 and the second transceiver 93 may be two independent transceivers, or may be integrated in one information transceiver, and this is not particularly limited in the embodiment of the present invention.

When the base station operates, the processor 91, the first transceiver 92, and the second transceiver 93 may execute the method process illustrated in fig. 2, specifically including:

the processor 91, configured to obtain a target beam capable of serving a terminal that has accessed the base station, from among beams of the second base station;

the first transceiver 92 is configured to send part or all of the downlink data of the terminal to the second base station, so that the second base station sends the downlink data to the terminal through the target beam.

In this embodiment of the present invention, the first transceiver 92 is further configured to:

Optionally, the second transceiver 93 is configured to send the received information of the beam pattern adopted by the second base station to the terminal.

In this embodiment of the present invention, as an optional configuration manner of the reference signal, the processor 91 is further configured to:

and configuring a reference signal for measurement on each beam of the second base station for the terminal, and sending configuration information of the reference signal to the terminal.

As another optional configuration of the reference signal, the first transceiver 92 is further configured to: sending a configuration request to the second base station to request the second base station to configure a reference signal for the terminal on each beam of the second base station for measurement; receiving configuration information of reference signals for measurement, configured by the second base station on all beams of the second base station for the terminal; the second transceiver 93 is further configured to: and sending the configuration information to the terminal.

In this embodiment of the present invention, as a first optional target beam obtaining manner, the processor 91 is specifically configured to:

As a second alternative target beam acquisition manner, the first transceiver 92 is further configured to: sending the measurement information reported by the terminal, which is received by the second transceiver 93, to the second base station, where the measurement information is obtained by the terminal measuring reference signals on each beam of the second base station; and receiving information of a target beam sent by the second base station to obtain the target beam.

The base station and the second base station share a common station, and as a third optional target beam obtaining manner, the processor 91 is specifically configured to:

the first transceiver 92 is further configured to: sending information obtained by current measurement of the base station to the second base station, wherein the information obtained by current measurement of the base station at least comprises DOA between the terminal and the base station; receiving information of a target beam formed by the second base station and transmitted by the second base station;

the processor 91 is specifically configured to: and determining the target beam corresponding to the information of the target beam.

Optionally, the information currently measured by the base station further includes path loss information between the terminal and the base station.

Based on the first optional target beam obtaining manner or the third optional target beam obtaining manner, the first transceiver 92 is further configured to:

Based on any of the above embodiments, the second transceiver 93 is further configured to:

and sending the information of the target beam to the terminal.

Based on the same inventive concept, a fourth base station is further provided in the embodiments of the present invention, and since the principle of the base station to solve the problem is similar to the data transmission method shown in fig. 6, the implementation of the base station may refer to the implementation of the method shown in fig. 6, and repeated details are not repeated.

An embodiment of the present invention provides a fourth base station, which is applied to a communication system including a first base station and the base station, and as shown in fig. 10, the base station includes:

a processor 101, a first transceiver 102, a second transceiver 103, a communication interface 104, and a system bus 105. Wherein:

the processor 101 and the communication interface 104 are connected through the system bus 105 and perform communication with each other. The processor 101 may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement embodiments of the present invention.

The communication interface 104 is used to interact with other communication devices.

The first transceiver 102 is used for data transmission with other base stations (e.g., a second base station).

The second transceiver 103 is used for data transmission with the terminal.

When the base station operates, the processor 101, the first transceiver 102, and the second transceiver 103 may execute the method process illustrated in fig. 6, which specifically includes:

the processor 101 is configured to obtain a target beam capable of serving a terminal that has accessed the first base station, from among beams of the base stations;

the first transceiver 102 is configured to receive part or all of downlink data of the terminal sent by the first base station;

the second transceiver 103 is configured to transmit the downlink data to the terminal through the target beam.

In this embodiment of the present invention, the first transceiver 102 is further configured to:

Optionally, the first transceiver 102 is further configured to:

According to any of the above embodiments, the processor 101 is further configured to: after the first transceiver 102 receives the configuration request sent by the first base station, configuring a reference signal for measurement on each beam of the second base station for the terminal; the first transceiver 102 is further configured to: sending the configuration information of the reference signal to the first base station;

or

The first transceiver 102 is further configured to: and receiving configuration information of the reference signals which are configured for the terminal on each beam of the second base station for measurement and sent by the first base station.

In this embodiment of the present invention, as a first optional target beam obtaining manner, the first transceiver 102 is further configured to:

As a second alternative target beam obtaining manner, the first transceiver 102 is further configured to: receiving measurement information sent by the first base station, wherein the measurement information is obtained by measuring reference signals on each wave beam of the second base station by the terminal;

the processor 101 is specifically configured to: and determining the target beam according to the measurement information and/or the load information on each beam of the second base station.

As a third optional target beam acquisition manner, the first transceiver 102 is further configured to: receiving information currently measured by the first base station, wherein the information currently measured by the first base station at least comprises a DOA between the terminal and the first base station;

the processor 101 is specifically configured to: and determining the antenna weight of the base station according to the received information so as to form a target beam capable of serving the terminal.

Correspondingly, the processor 101 determines the antenna weight of the base station according to the received path loss information and DOA, so as to form a target beam capable of serving the terminal.

Based on the second or third optional target beam obtaining manner, the first transceiver 102 is further configured to:

It should be noted that, the modules included in the base station shown in fig. 9 and 10 may be disposed in a base station, and when the base station is the first base station, the trigger processor 91, the first transceiver 92, and the second transceiver 93 execute processing; when the base station is the second base station, the processor 101, the first transceiver 102 and the second transceiver 103 are triggered to perform the processing.

It should be noted that, the modules included in the base station shown in fig. 9 and 10 may be disposed in a base station, and when the base station is the first base station, the trigger processor 91, the first transceiver 92, and the second transceiver 93 execute processing; when the base station is the second base station, the processor 101, the first transceiver 102, and the second transceiver 103 are triggered to perform the processing.

Based on the same inventive concept, an embodiment of the present invention further provides a communication system, as shown in fig. 11, including:

a first base station 111, configured to obtain a target beam capable of serving a terminal that has accessed the first base station, from among beams of the second base station; sending part or all downlink data of the terminal to the second base station, so that the second base station sends the downlink data to the terminal through the target beam;

a second base station 112, configured to obtain a target beam, which can serve a terminal that has accessed the first base station, in a beam of the second base station; and receiving part or all downlink data of the terminal sent by the first base station, and sending the downlink data to the terminal through the target wave beam.

The first base station 111 may be a base station as shown in fig. 7, or may be a base station as shown in fig. 9; the first base station 112 may be a base station as shown in fig. 8, or may be a base station as shown in fig. 10. For the detailed description of the first base station 111 and the first base station 112, reference may be made to relevant contents of other embodiments of the present invention, and details are not described herein.

In the embodiment shown in fig. 12, a data transmission method on the first base station side is provided, which is applied to a communication system including a first base station and a second base station, and as shown in fig. 12, the method includes:

s21, the first base station receives measurement information reported by a terminal, and the measurement information is obtained by the terminal measuring reference signals on different beams of the second base station;

specifically, if the second base station fixedly forms multiple beams by using the first beam pattern, the information of the target beam may be identification information of a port corresponding to the target beam; if the second base station forms different beams in different time intervals by using a second beam mode, the information of the target beam may be a time interval corresponding to the target beam; if the second base station forms different beams in different time intervals by using a second beam pattern, and the second base station includes at least two ports, the information of the target beam may be the time interval corresponding to the target beam and the identification information of the port corresponding to the target beam.

S22, the first base station sends the measurement information to a network node, so that the network node determines, according to the measurement information, a target beam capable of serving a terminal that has accessed the first base station in a beam of the second base station, where the network node is a central node or the second base station, the central node is connected to a core network, and the first base station and the second base station communicate through the central node.

In the embodiment of the invention, after receiving the measurement information reported by the terminal, the first base station sends the measurement information to the network node, so that the network node determines the target beam capable of serving the terminal accessed to the first base station in the beam of the second base station according to the measurement information, and the second base station and the terminal can perform data transmission through the target beam. Because the first base station can transfer part or all of the services of the terminal on the first base station to the second base station for transmission, the resource utilization rate of the second base station is improved, the load of the first base station is reduced, and the throughput rate of the terminal is improved.

The network architectures applied in the embodiments of the present invention are different, and the implementation manner of the first base station obtaining the target beam in S21 specifically includes the following two possible implementation manners:

first, a network architecture applied by the method is shown in fig. 13A, where a first base station and a second base station are connected to a core network, respectively, an interface exists between the first base station and the second base station, and the first base station and the second base station can directly communicate with each other, and a terminal has access to the first base station.

In this approach, the target beam is determined by the second base station.

In this manner, the specific behavior of the first base station side is as follows: and the first base station sends the measurement information reported by the terminal to the second base station.

Optionally, the second base station sends the information of the target beam to the first base station.

Correspondingly, the first base station receives the information of the target beam sent by the second base station; and

and the first base station sends the information of the target beam to the terminal, so that the terminal can monitor only on the target beam to receive the downlink data sent by the second base station.

In this manner, the second base station determines the target beam based on the measurement information transmitted by the first base station.

In a possible implementation manner, the second base station selects a beam with the best signal quality from the measurement information sent by the first base station, and determines the beam as the target beam; or the second base station selects a beam with signal quality meeting a set threshold value from the measurement information transmitted by the first base station and determines the beam as the target beam.

RSRP、RSRQ、CQI、RSSI。

in another possible implementation manner, the second base station determines the target beam according to the measurement information sent by the first base station and the load information on each beam of the second base station.

For example, the second base station selects a beam with signal quality meeting a set threshold and the load being the smallest as the target beam. As another example, the second base station selects a beam with signal quality meeting a set threshold and load meeting a set threshold as the target beam, and so on.

A second method is that a network architecture applied in this method is shown in fig. 13B, that is, a Central node (CU) -Distributed node (DU) architecture, where a first DU in fig. 13B is the first base station, a second DU is the second base station, the first DU and the second DU are respectively connected to CUs, the CUs are connected to a core network, the first DU and the second DU perform data transmission through the CUs, and the terminal has access to the first DU. In this manner, the central node determines the target beam and sends information of the target beam to the second base station.

In this manner, the specific behavior of the first base station side is as follows:

and the first base station sends the measurement information reported by the terminal to the central node, so that the central node determines the target beam according to the measurement information.

Optionally, after the central node determines the target beam, the method further includes:

and the central node sends the information of the target beam to the first base station.

Correspondingly, the first base station receives the information of the target beam sent by the central node; and

In this manner, the central node determines the target beam based on the measurement information sent by the first base station, and the specific processing procedure may refer to an implementation manner of determining the target beam by the second base station in the first manner.

Based on the above-mentioned first or second mode, the measurement information in the embodiment of the present invention specifically refers to the related description in the embodiment shown in fig. 2, and is not described herein again.

Based on the above first mode or the second mode, optionally, the method further includes: and the first base station receives the information of the beam mode adopted by the second base station, which is sent by the second base station.

The information of the beam pattern specifically refers to the related description in the embodiment shown in fig. 2, and is not repeated here.

Based on the above first mode or the second mode, optionally, the method provided by the embodiment of the present invention further includes:

Refer to the description of the embodiment shown in fig. 2, and the description is omitted here.

Based on the above first mode or the second mode, optionally, the method provided by the embodiment of the present invention further includes: and the first base station instructs the terminal to measure the reference signal on the antenna port contained in the second base station. Refer to the description of the embodiment shown in fig. 2, and the description is omitted here.

The first and second manners are applicable to various deployment manners of the first base station and the second base station. For example, the first base station and the second base station are co-located (co-located); for another example, the first base station and the second base station are not co-sited.

and the first base station sends part or all of the bearing information of the terminal to the second base station, wherein the bearing information is used for indicating the second base station to establish corresponding bearing.

Specifically, if the method is applied to the network architecture shown in fig. 13A, the first base station directly sends part or all of the bearer information used for transmitting the terminal to the second base station; if the method is applied to the network architecture shown in fig. 13B, the first base station sends part or all of the bearer information of the terminal to the second base station through a central node (CU), that is, the first base station sends part or all of the bearer information of the terminal to the central node, and the central node forwards part or all of the bearer information of the terminal to the second base station.

In the embodiment of the present invention, the bearer information includes, but is not limited to, the following information:

bearer identification, bearer QoS parameters, and tunnel endpoint identification (tunnel point ID). If the tunnel endpoint identifier is applied to the network architecture shown in fig. 13A, the tunnel endpoint identifier is an endpoint identifier of a tunnel to a core network; if applied to the network architecture shown in fig. 13B, the tunnel endpoint id is an endpoint id of a tunnel to the central node.

Based on any of the above embodiments, if the method is applied to the network architecture shown in fig. 13A, an interface exists between the first base station and the second base station, so that direct communication can be performed; if the network architecture shown in fig. 13B is applied, an interface does not exist between the first base station and the second base station, and communication needs to be performed through a central node.

In the embodiment shown in fig. 14, a data transmission method at the second base station side is provided, which is applied to a communication system including a first base station and a second base station, and for the same parts in the embodiment shown in fig. 12, please refer to the related description in the embodiment shown in fig. 12, which is not repeated herein. The method comprises the following steps:

s141, the second base station obtaining a target beam capable of serving a terminal that has accessed the first base station from among beams of the second base station;

and S142, the second base station performs data transmission with the terminal through the target beam.

In the embodiment of the invention, the second base station obtains the target beam which can serve the terminal accessed to the first base station in the beam of the second base station, and performs data transmission with the terminal through the target beam, so that part or all of the services of the terminal on the first base station are transferred to the second base station for transmission under the assistance of the first base station, the resource utilization rate of the second base station is improved, the load of the first base station is reduced, and the throughput rate of the terminal is improved.

In implementation, the method provided in the embodiment of the present invention further includes: and the second base station sends the information of the beam mode adopted by the second base station to the first base station.

Based on any of the foregoing embodiments, as an optional implementation manner, in S141, the obtaining, by the second base station, the target beam includes:

and the second base station receives the information of the target beam sent by the central node to obtain the target beam.

As another optional implementation manner, before the second base station obtains the target beam in S141, the method further includes:

accordingly, the obtaining, by the second base station, the target beam in S141 includes: and the second base station determines the target beam according to the measurement information and/or the load information on each beam of the second base station. Referring to the description of the embodiment shown in fig. 12, further description is omitted here.

Further, after the second base station obtains the target beam in S141, the method further includes:

and the second base station sends the information of the target beam and the identification information of the terminal to the first base station, so that the first base station informs the terminal of the information of the target beam.

In the embodiment of the present invention, the measurement information specifically refers to the related description in the embodiment shown in fig. 2, and is not described herein again.

Based on any of the above embodiments, the method further comprises: the second base station receives part or all of the bearing information of the terminal sent by the network node; establishing corresponding load according to the load information; and acquiring data corresponding to the bearer from a core network. Specifically, the method comprises the following steps:

if the network architecture shown in fig. 13A is applied, the following steps are specifically performed:

the second base station receives part or all of the bearing information of the terminal sent by the first base station;

the second base station establishes a tunnel corresponding to the corresponding bearer with the core network according to the bearer information;

and the second base station acquires the data corresponding to the bearer from a core network.

Correspondingly, the data transmission between the second base station and the terminal through the target beam includes: and the second base station sends the data corresponding to the load to the terminal through the target wave beam.

Second, if the network architecture shown in fig. 13B is applied, specifically, the following steps are performed:

the second base station receives part or all of the bearing information of the terminal sent by the central node;

the second base station establishes a tunnel corresponding to the corresponding bearer with the central node according to the bearer information;

and the second base station acquires the data corresponding to the bearer from a core network through the central node.

In the embodiment of the present invention, the bearing information specifically refers to the related description in the embodiment shown in fig. 12, and is not described herein again.

In the embodiment shown in fig. 15, a data transmission method at a center node side is provided, which is applied to a communication system including a first base station, a second base station, and a center node, where the center node is connected to a core network, and the first base station and the second base station communicate with each other through the center node, and the method includes:

s151, the central node receives the measurement information sent by the first base station, where the measurement information specifically refers to the relevant description in the embodiment shown in fig. 12, and is not described here again.

S152, the central node determines a target beam capable of serving the terminal accessed to the first base station in the beams of the second base station according to the measurement information;

since the manner in which the central node determines the target beam is similar to the manner in which the second base station determines the target beam in the embodiment shown in fig. 12, refer to the related description in the embodiment shown in fig. 12 specifically, and are not repeated here.

S153, the central node sends the information of the target wave beam to the second base station.

Optionally, the method further includes: and the central node sends the information of the target beam to the first base station.

Based on the same inventive concept, a possible implementation manner of the apparatus corresponding to the embodiment shown in fig. 12 is shown in fig. 7, where the receiving module 73 and the sending module 72 are further configured to execute the method in the embodiment shown in fig. 12, and refer to the related description in the embodiment shown in fig. 12 specifically, which is not described herein again.

Another possible implementation manner of the apparatus corresponding to the embodiment shown in fig. 12 is shown in fig. 9, where the processor 91, the first transceiver 92, and the second transceiver 93 are further configured to execute the method in the embodiment shown in fig. 12, and refer to the related description in the embodiment shown in fig. 12 specifically, which is not described herein again.

Based on the same inventive concept, a possible implementation manner of the apparatus corresponding to the embodiment shown in fig. 14 is shown in fig. 8, where the target beam obtaining module 81 further executes the method in the embodiment shown in fig. 14, specifically refer to the related description in the embodiment shown in fig. 14, and is not described again here.

Optionally, the apparatus shown in fig. 8 further includes:

and the data transmission module is used for carrying out data transmission with the terminal through the target wave beam.

Optionally, the apparatus shown in fig. 8 further includes:

a bearer establishing module, configured to receive part or all of bearer information of the terminal sent by a network node, where the network node is the first base station or a central node, and the central node is connected to a core network, the first base station, and the base station; establishing corresponding load according to the load information; and acquiring data corresponding to the bearer from a core network.

Correspondingly, the data transmission module is specifically configured to: and sending the data corresponding to the bearer to the terminal through the target beam.

Another possible implementation manner of the apparatus corresponding to the embodiment shown in fig. 14 is shown in fig. 10, where the processor, the first transceiver 102, and the second transceiver 103 further execute the method in the embodiment shown in fig. 14, and refer to the related description in the embodiment shown in fig. 14 specifically, which is not described herein again.

Based on the same inventive concept, in the embodiment shown in fig. 16, a central node is provided, which is applied to a communication system including a first base station, a second base station and the central node, the central node is connected to a core network, and the first base station and the second base station communicate with each other through the central node, and the central node includes:

a receiving module 161, configured to receive measurement information sent by the first base station, where the measurement information refers to relevant descriptions in the embodiment shown in fig. 12, and is not described herein again;

a determining module 162, configured to determine, according to the measurement information, a target beam capable of serving a terminal that has accessed the first base station in the beam of the second base station; since the manner in which the determining module 162 determines the target beam is similar to the manner in which the second base station determines the target beam in the embodiment shown in fig. 12, refer to the related description in the embodiment shown in fig. 12 specifically, and are not repeated here;

a sending module 163, configured to send the information of the target beam to the second base station.

Optionally, the sending module 163 is further configured to: and sending the information of the target beam to the first base station.

In the embodiment shown in fig. 17, another central node is provided, comprising a processor 171, a transceiver 172, a communication interface 173, and a system bus 174.

The processor 171 and the communication interface 173 are connected via the system bus 174 to complete communication therebetween. The processor 171 may be a CPU, or an ASIC, or one or more integrated circuits configured to implement embodiments of the present invention.

The communication interface 173 is used for interacting with other communication devices.

The transceiver 172 is used for data transmission with other network nodes (e.g., the first base station and the second base station).

When the central node is running, the processor 171 and the transceiver 172 may execute the method flow described in fig. 15.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A data transmission method applied to a communication system including a first base station and a second base station, the method comprising:

the first base station sends the measurement information to a network node so that the network node determines a target beam capable of serving a terminal accessed to the first base station in beams of the second base station according to the measurement information, wherein the network node is a central node or the second base station, the central node is connected with a core network, and the first base station and the second base station communicate through the central node;

the first base station receives the information of the target beam sent by the second base station, and the first base station sends the information of the target beam to the terminal; or, the first base station receives information of a target beam sent by the central node, and the first base station sends the information of the target beam to the terminal.

2. The method of claim 1, wherein the method further comprises:

3. The method of claim 1, wherein after the first base station transmits the measurement information to a network node, the method further comprises:

4. The method according to any of claims 1 to 3, wherein if the second base station forms multiple beams using the first beam pattern, each beam corresponding to a different antenna port, the measurement information comprises:

5. A data transmission method applied to a communication system including a first base station and a second base station, the method comprising:

the second base station sends the information of the target wave beam and the identification information of the terminal to the first base station;

6. The method of claim 5, wherein the method further comprises: the second base station receives part or all of bearing information of the terminal sent by a network node, wherein the network node is the first base station or a central node, the central node is connected with a core network, and the first base station and the second base station are communicated through the central node; establishing corresponding load according to the load information; acquiring data corresponding to the bearer from a core network;

7. The method of claim 5 or 6, wherein the second base station obtaining a target beam of the second base station that can serve a terminal having access to the first base station, comprises:

8. The method of claim 5 or 6, wherein before the second base station obtains a target beam of the second base station that can serve a terminal having access to the first base station, the method further comprises: the second base station receives measurement information sent by a network node, wherein the measurement information is obtained by measuring reference signals on each wave beam of the second base station by the terminal, the network node is the first base station or a central node, the central node is connected with a core network, and the first base station and the second base station communicate through the central node;

9. The method of claim 8, wherein if the second base station fixedly forms a plurality of beams with the first beam pattern, each beam corresponding to a different antenna port, the measurement information comprises:

10. A data transmission method, applied to a communication system including a first base station, a second base station, and a central node, wherein the central node is connected to a core network, and the first base station and the second base station communicate with each other through the central node, the method comprising:

the central node receives measurement information sent by the first base station, wherein the measurement information is obtained by measuring reference signals on different wave beams of the second base station by a terminal;

the central node sends the information of the target wave beam to the second base station;

11. The method of claim 10, wherein if the second base station fixedly forms a plurality of beams with a first beam pattern, each beam corresponding to a different antenna port, the measurement information comprises:

12. A base station, for use in a communication system including the base station and a second base station, the base station comprising:

a receiving module, configured to receive measurement information reported by a terminal, where the measurement information is obtained by the terminal by measuring reference signals on different beams of the second base station;

a sending module, configured to send the measurement information to a network node, so that the network node determines, according to the measurement information, a target beam that can serve a terminal that has accessed to the base station, from among beams of the second base station, where the network node is a central node or the second base station, the central node is connected to a core network, and the base station and the second base station communicate with each other through the central node;

the receiving module is further configured to receive information of the target beam sent by the second base station, and the sending module is further configured to send the information of the target beam to the terminal; or, the receiving module is further configured to receive information of a target beam sent by the central node, and the sending module is further configured to send the information of the target beam to the terminal.

13. The base station of claim 12, wherein the transmitting module is further configured to:

and sending part or all of the bearing information of the terminal to the second base station, wherein the bearing information is used for indicating the second base station to establish a corresponding bearing.

14. The base station of claim 12,

the receiving module is further configured to: receiving information of a target beam sent by the network node;

the sending module is further configured to: and sending the information of the target beam to the terminal.

15. The base station according to any of claims 12 to 14, wherein if the second base station uses the first beam pattern to fixedly form a plurality of beams, each beam corresponding to a different antenna port, the measurement information comprises:

16. A base station, for use in a communication system including a first base station and the base station, the base station comprising:

a target beam obtaining module, configured to obtain a target beam capable of serving a terminal that has accessed the first base station, from among beams of the base stations; and the first base station is used for sending the information of the target beam and the identification information of the terminal to the first base station;

17. The base station of claim 16, wherein the base station further comprises:

a bearer establishing module, configured to receive part or all of bearer information of the terminal sent by a network node, where the network node is the first base station or a central node, and the central node is connected to a core network, the first base station, and the base station; establishing corresponding load according to the load information; acquiring data corresponding to the bearer from a core network;

the data transmission module is specifically configured to: and sending the data corresponding to the bearer to the terminal through the target beam.

18. The base station of claim 16 or 17, wherein the target beam acquisition module is specifically configured to:

and receiving the information of the target beam and the identification information of the terminal sent by a central node to obtain the target beam, wherein the central node is respectively connected with a core network, the first base station and the base station.

19. The base station according to claim 16 or 17, wherein the target beam obtaining module is specifically configured to receive measurement information sent by a network node, where the measurement information is obtained by the terminal by measuring a reference signal on each beam of the base station, the network node is the first base station or a central node, and the central node is connected to a core network, the first base station, and the base station, respectively;

and determining the target beam according to the measurement information and/or the load information on each beam of the base station.

20. The base station of claim 19, wherein if the base station fixedly forms a plurality of beams using the first beam pattern, each beam corresponding to a different antenna port, the measurement information comprises:

21. A central node, applied to a communication system including a first base station, a second base station and the central node, wherein the central node is connected to a core network, and the first base station and the second base station communicate with each other through the central node, the central node comprising:

a receiving module, configured to receive measurement information sent by the first base station, where the measurement information is obtained by measuring, by a terminal, reference signals on different beams of the second base station;

a determining module, configured to determine, according to the measurement information, a target beam that can serve a terminal that has accessed the first base station, from among beams of the second base station;

a sending module, configured to send information of the target beam to the second base station; and for transmitting information of the target beam to the first base station.

22. The central node of claim 21, wherein if the second base station fixedly forms a plurality of beams using the first beam pattern, each beam corresponding to a different antenna port, the measurement information comprises: