WO2015161498A1

WO2015161498A1 - Method for sending data and base station

Info

Publication number: WO2015161498A1
Application number: PCT/CN2014/076187
Authority: WO
Inventors: 乌力吉; 蔺波
Original assignee: 华为技术有限公司
Priority date: 2014-04-25
Filing date: 2014-04-25
Publication date: 2015-10-29
Also published as: CN105379348A; CN105379348B

Abstract

Provided are a method for sending data and a base station, so that when the base station distributes data to an offload node, the data can be distributed more reasonably to the offload node and at the same time, the throughput of a UE is increased. The method comprises: a base station acquires a backhaul link time between the base station and the offload node; the base station determines to send a first volume of data within the backhaul link time; the base station distributes a second volume of data and a third volume of data to the base station and the offload node respectively, wherein a sum of the second volume and the third volume is a difference value between a volume of data to be sent to a user equipment (UE) and the first volume of data; the base station sends the third volume of data to the offload node; and the base station sends the first volume of data and the second volume of data to the UE. The method is applicable to the technical field of communications.

Description

The present invention relates to the field of communications technologies, and in particular, to a data transmission method and a base station. BACKGROUND In order to improve the throughput of a network system and increase the data transmission rate, a new type of network scenario is proposed in the prior art. As shown in FIG. 1, in the network scenario, the same bearer data for the UE is used. All or part of the data may be transmitted to the user equipment (English: User Equipment, referred to as UE) through a macro evolved base station (English: Macro evolved Node B, MeNB for short), or all or part of the data may be transmitted to the user through the offload node. The user equipment, that is, the user equipment, can be served by both the macro cell served by the macro evolved base station and the small cell served by the offload node, and the UE has dual links. Compared with the same bearer, it is only established to an evolved base station (English: evolved Node Β, eNB for short), which improves the data transmission efficiency. In the above dual-link scenario, the downlink data sent to the UE first arrives at the MeNB, and the MeNB allocates data, and a part of the data is sent by the MeNB to the UE, and part of the data is sent to the offloading node, and is sent by the offloading node to the UE. In the process of allocating downlink data to the MeNB, if the amount of data allocated to the offloading node is too large, the data packet may be congested at the branching node, resulting in an increase in packet delay or even packet loss. Conversely, if the amount of data allocated to the offload node is too small, it may result in wasted resources and no gain. Based on this, how the MeNB allocates the offloaded data is an urgent problem to be solved.

SUMMARY OF THE INVENTION Embodiments of the present invention provide a data transmission method and a base station, which enable a base station to more appropriately allocate offloaded data to a branching node, and at the same time obtain a gain of throughput of the UE. In order to achieve the above objective, the embodiment of the present invention adopts the following technical solutions: In a first aspect, an embodiment of the present invention provides a base station, where the base station includes: an acquiring unit, a determining unit, an allocating unit, and a sending unit; Used to acquire a backhaul link time between the base station and the offload node; The determining unit is configured to determine data of a first data amount that is sent in the backhaul link time; and the allocating unit is configured to separately allocate data of the second data amount and the third data amount to the base station And the offloading node, wherein the sum of the second data amount and the third data amount is a difference between a data amount to be sent to the user equipment UE and the first data amount; the sending unit is configured to The data of the third data amount is sent to the offloading node; the sending unit is further configured to send the data of the first data amount and the second data quantity to the UE. In a first possible implementation, in combination with the first aspect, the base station further includes: a receiving unit;

The receiving unit is configured to receive air interface capability information of the traffic distribution node that is reported by the traffic distribution node, where the air interface capability information includes a throughput and/or a bit rate, and the allocation unit is configured to use, according to the base station and the The throughput and/or bit rate of the offload node are respectively allocated to the base station and the offload node, respectively, data of the second data amount and the third data amount.

In a second possible implementation, in combination with the first aspect or the first possible implementation, the receiving unit is further configured to: receive a offloading indication message sent by the offloading node, where the offloading indication message includes the Whether the base station sends information of the data to the offloading node; if the offloading indication message includes information that the base station sends data to the offloading node, the allocating unit is configured to: use the second data amount and the third data The amount of data is respectively allocated to the base station and the offload node; the sending unit is configured to send data of the third data amount to the offload node; and the first data amount and the second data amount The sending data is sent to the UE; if the offloading indication message includes information that the base station does not send data to the offloading node, the sending unit is configured to: send data to be sent to the UE to the UE . In a third possible implementation, in combination with the first aspect, the receiving unit is further configured to: Receiving the air interface capability information of the traffic distribution node that is reported by the user equipment, where the air interface capability information includes a throughput and/or a bit rate, and the allocation unit is configured to use, according to the throughput of the base station and the traffic distribution node, /bit rate, the data of the second data amount and the third data amount are respectively allocated to the base station and the branching node.

In a fourth possible implementation, in combination with the first possible implementation manner or the third possible implementation manner, the air interface capability information further includes a channel quality indicator CQI, where the allocation unit is configured to The base station and the CQI of the offload node respectively allocate data of the second data amount and the third data amount to the base station and the offload node. In a fifth possible implementation, in combination with the first aspect, any one of the first possible implementation manner to the fourth possible implementation manner, the receiving unit is further configured to receive the sending by the distribution node a reminder message, the reminder message carries a GTP-U sequence number of the data that the branching node requests to be retransmitted by the base station; the sending unit is further configured to resend the data corresponding to the GTP-U sequence number to the offloading node . In a sixth possible implementation, in combination with the first aspect, any one of the first possible implementation manner to the fifth possible implementation manner, the receiving unit is specifically configured to receive operation, management, and maintenance The backhaul link time configured by the system OAM; the sending unit is specifically configured to send a probe message to the offload node, where the probe message is used to request the offload node to send a backhaul link time; Receiving the backhaul link time sent by the offloading node; the receiving unit is further configured to receive the beacon information sent by the offloading node; the determining unit is specifically configured to determine, according to the beacon information, the The sending unit is further configured to send the first data packet to the offloading node, where the first data packet carries timestamp information that the sending unit sends the first data packet; The receiving unit is further configured to receive a second data packet sent by the UE, where the second data packet carries, by the sending unit, the first data packet. Timestamp information, and the first data packet arrival time stamp information of said shunt node; The determining unit is further configured to determine, according to the sending unit, timestamp information of the first data packet, and timestamp information that the first data packet arrives at the offload node, to determine a backhaul link time.

In a seventh possible implementation, in combination with the first aspect, any one of the first possible implementation manner to the sixth possible implementation manner, the base station further includes: a comparing unit; Comparing the first amount of data with the amount of data that the base station is to send to the UE;

If the comparing unit determines that the first data amount is smaller than the amount of data that the base station is to send to the UE, the comparing unit sends a first message to the allocating unit, where the first message includes the first a data amount smaller than information of the amount of data that the base station is to send to the UE;

The allocating unit is configured to receive the first message, and allocate data of the second data amount and the third data amount to the base station and the offload node respectively; the sending unit is configured to: Transmitting, by the comparing unit, the data of the first data amount and the second data amount to the UE; and if the comparing unit determines that the first data quantity is greater than or equal to the base station sending The comparing unit sends a second message to the sending unit, where the second message includes information that the first data amount is greater than or equal to the amount of data sent by the base station to the UE. ;

The sending unit is configured to: send data of an amount of data to be sent to the UE to the UE.

In a second aspect, the embodiment of the present invention provides a data sending method, where the method includes: acquiring, by a base station, a backhaul link time between the base station and a offloading node; the base station determining to send in the backhaul link time Data of the first data amount; the base station allocates data of the second data amount and the third data amount to the base station and the distribution node, respectively, wherein a sum of the second data amount and the third data amount is a difference between the amount of data to be sent to the user equipment UE and the first data amount; the base station transmitting data of the third data amount to the offload node; The base station transmits data of the first data amount and the second data amount to the UE. In a first possible implementation, in combination with the second aspect, the method further includes: receiving, by the base station, air interface capability information of the traffic distribution node that is reported by the traffic distribution node, where the air interface capability information includes throughput and/or a bit rate; the base station separately assigning the data of the second data volume and the third data amount to the base station and the offloading node, respectively, specifically: the base station according to the throughput of the base station and the offload node and/or a bit rate, the data of the second data amount and the third data amount are respectively allocated to the base station and the offload node.

In a second possible implementation, in combination with the second aspect or the first possible implementation manner, before the base station sends the third data volume data to the traffic distribution node, the method further includes: Receiving, by the base station, a offloading indication message sent by the offloading node, where the offloading indication includes: information indicating whether the base station sends data to the offloading node; if the offloading indication message includes sending, by the base station, the offloading node Data, the base station assigns data of the second data amount and the third data amount to the base station and the offload node respectively; the base station sends data of the third data amount to the offload a node: the base station sends the data of the first data volume and the second data amount to the UE; if the offload indication message includes information that the base station does not send data to the offload node, the method further includes The base station transmits data to be sent to the UE to the UE.

In a third possible implementation, in combination with the second aspect, the method further includes: receiving, by the base station, air interface capability information of the traffic distribution node that is reported by the user equipment, where the air interface capability information includes throughput and/or a bit rate; the base station separately assigning the data of the second data volume and the third data amount to the base station and the offloading node, respectively, specifically: the base station according to the throughput of the base station and the offload node and/or Bit rate, will be The data of the second data amount and the third data amount are respectively allocated to the base station and the branching node. In a fourth possible implementation, in combination with the first possible implementation manner or the third possible implementation manner, the air interface capability information further includes a channel quality indicator CQI; The three data amount data respectively allocated to the base station and the offload node specifically include: the base station separately assigns data of the second data amount and the third data amount according to CQIs of the base station and the offload node Giving the base station and the offload node. In a fifth possible implementation, in combination with the second aspect, any one of the first possible implementation manner to the fourth possible implementation manner, the data of the third data volume is used by the base station After the method is sent to the offloading node, the method further includes: receiving, by the base station, an alert message sent by the offloading node, the alert canceling, and carrying, the GTP-U carrying the data that the splitting node requests to be retransmitted by the base station The base station retransmits the data corresponding to the GTP-U sequence number to the offload node. In a sixth possible implementation, in combination with the second aspect, the first possible implementation manner to the fifth possible implementation manner, the base station acquires a backhaul between the base station and the offload node The link time specifically includes: the base station receiving the backhaul link time configured by the operation, management, and maintenance system ;; or the acquiring, by the base station, the backhaul link time between the base station and the offloading node, specifically: The offloading node sends a probe message, where the probe message is used to request the offload node to send a backhaul link time; the base station receives a backhaul link time sent by the offload node; or the base station acquires the base station and the offload node The backhaul link time between the base station includes: receiving, by the base station, beacon information sent by the offloading node, determining, according to the beacon information, the backhaul link time; or acquiring, by the base station, the base station and The backhaul link time between the offloading nodes specifically includes: the base station sending a first data packet to the offloading node, where the first data packet carries The base station sends the timestamp information of the first data packet; the base station receives the second data packet sent by the UE, and the second data packet carries the timestamp information of the first data packet sent by the base station, And the timestamp information that the first data packet arrives at the offload node; determining, according to the timestamp information that the base station sends the first data packet, and timestamp information that the first data packet arrives at the offload node Backhaul link time.

In a seventh possible implementation, in combination with the second aspect, any one of the first possible implementation manner to the sixth possible implementation manner, the base station determines to send the first time in the backhaul link time. After a data amount of data, the method further includes: comparing the first data amount with an amount of data to be sent by the base station to the UE; if the base station determines that the first data amount is smaller than the base station And the base station allocates data of the second data amount and the third data amount to the base station and the offload node respectively; the base station sends the data of the third data amount to the data amount to be sent to the UE And sending, by the base station, data of the first data volume and the second data amount to the UE; if the base station determines that the first data amount is greater than or equal to the base station to be sent to the The amount of data of the UE, the base station transmitting data of the amount of data to be sent to the UE to the UE. In a third aspect, an embodiment of the present invention provides a base station, where the base station includes: a processor, a transmitter, and the processor, configured to acquire a backhaul link time between the base station and a offload node; The processor is further configured to determine data of a first amount of data sent in the backhaul link time; the processor is further configured to separately allocate data of the second data amount and the third data amount to the And the sum of the second data amount and the third data amount is a difference between a data amount to be sent to the user equipment UE and the first data amount; the transmitter uses Transmitting the data of the third data amount to the distribution node; the transmitter is further configured to send the data of the first data volume and the second data volume to The UE. In a first possible implementation, in combination with the third aspect, the base station further includes: a receiver;

The receiver is configured to receive air interface capability information of the traffic distribution node that is reported by the traffic distribution node, where the air interface capability information includes a throughput and/or a bit rate, and the processor is configured to use, according to the base station and the The throughput and bit rate of the offload node are respectively allocated to the base station and the offload node, respectively, data of the second data amount and the third data amount.

In a second possible implementation manner, in combination with the third aspect or the first possible implementation manner, the receiver is further configured to: receive a traffic distribution indication message sent by the traffic distribution node, where the traffic distribution indication message includes Determining whether the base station sends information of the data to the offload node;

The processor, configured to: if the offload indication message includes information that the base station sends data to the offload node, allocate the data of the second data volume and the third data amount to the base station and the a transmitter, configured to send data of the third data amount to the offload node; and send data of the first data amount and the second data amount to the UE; The method is further configured to: if the offloading indication message includes information that the base station does not send data to the offloading node, send data to be sent to the UE to the UE. In a third possible implementation, in combination with the third aspect, the receiver is further configured to receive air interface capability information of the traffic distribution node that is reported by the user equipment, where the air interface capability information includes throughput and/or a bit rate; the processor, configured to allocate data of the second data amount and the third data amount to the base station and the offload node respectively according to throughput and/or bit rate of the base station and the offload node .

In a fourth possible implementation, in combination with the first possible implementation manner or the third possible implementation manner, the air interface capability information further includes a channel quality indicator CQI, where the processor is specifically configured to perform Describe the CQI of the base station and the offload node, Data of the second data amount and the third data amount are respectively allocated to the base station and the branching node. In a fifth possible implementation, in combination with the third aspect, the first possible implementation manner to the fourth possible implementation manner, the receiver is further configured to: receive the sending by the distribution node The reminder message, the reminder message carries a GTP-U sequence number of the data that the branching node requests to be retransmitted by the base station; the sender is further configured to resend the GTP-U sequence number corresponding to the offload node data. In a sixth possible implementation, in combination with the third aspect, the first possible implementation manner to the fifth possible implementation manner, the receiver is further configured to: receive operation, management, and maintenance a backhaul link time configured by the system OAM; the transmitter, configured to send a probe message to the offload node, where the probe message is used to request the offload node to send a backhaul link time; and the receiver is configured to receive The backhaul link time sent by the offloading node; the receiver is further configured to receive beacon information sent by the offloading node; the processor, configured to determine the backhaul link time according to the beacon information The transmitter is further configured to send a first data packet to the offloading node, where the first data packet carries timestamp information that the transmitter sends the first data packet; the receiver, And receiving, by the UE, a second data packet, where the second data packet carries timestamp information that the transmitter sends the first data packet, and the first data packet arrives at the offloading a timestamp information of the point; the processor, configured to determine, according to the timestamp information of the first data packet, and the timestamp information that the first data packet arrives at the offload node, to determine a backhaul Link time. In a seventh possible implementation, in combination with the third aspect, the first possible implementation manner, the sixth possible implementation manner, the processor is further configured to: And comparing the amount of data to be sent by the base station to the UE; if the first amount of data is smaller than the amount of data to be sent by the base station to the UE, the data of the second data amount and the third data amount Assigned to the base station and the offload node respectively; The transmitter is further configured to: send the third data amount of data to the offload node; send the first data amount and the second data amount data to the UE;

If the processor determines that the first data amount is greater than or equal to the amount of data that the base station is to send to the UE, the transmitter is configured to: send data of a data quantity to be sent to the UE to the UE . The embodiment of the present invention provides a data transmission method and a base station. In the embodiment of the present invention, the base station and the backhaul link time of the offload node are taken into consideration, so that the base station can more appropriately allocate the offload data to the offload node, thereby avoiding The problem that the amount of data allocated by the base station to the offloading node is too large or too small, and the base station allocates the offloaded data to the offloading node more reasonably, so that the time for the UE to receive the data of the same amount of data becomes shorter, thereby obtaining the gain of the throughput of the UE. . DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic diagram of a dual-link network scenario; FIG. 2 is a schematic diagram 1 of a base station according to an embodiment of the present invention; FIG. 3 is a schematic diagram 2 of a base station according to an embodiment of the present invention; FIG. 5 is a flow chart of a method for transmitting data according to an embodiment of the present invention; FIG. 6 is a flow chart of a method for data transmission according to an embodiment of the present invention; FIG. 7 is a flow chart of a method for data transmission according to an embodiment of the present invention; FIG. 8 is a flow chart of a method for transmitting data according to an embodiment of the present invention. FIG. 9 is a schematic diagram 4 of a base station according to an embodiment of the present disclosure;

10 is a schematic diagram 5 of a base station according to an embodiment of the present invention.

detailed description The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention. With reference to FIG. 1, a dual-link network scenario is exemplarily described. The user equipment UE can receive data through the offload node or receive data through the base station at the same time within the service range of the base station and the offload node. It should be noted that the base station is usually a macro evolved base station MeNB, and the offload node may be a small evolved base station (English: Small cell evolved Node B, SeNB for short). The MeNB may send part or all of the data to the UE through the offloading node SeNB. In order to enable the base station to allocate the offloaded data to the offloading node, the embodiment of the present invention provides a base station. As shown in FIG. 2, the base station includes : an obtaining unit 201, a determining unit 202, an allocating unit 203, and a transmitting unit 204. The acquiring unit 201 is configured to acquire a backhaul link time between the base station and the offload node. Specifically, the backhaul link time between the base station and the offloading node is the time taken for data to be transmitted between the base station and the offloading node. In view of the fact that when there are only a small number of data packets in the base station, and the base station can send the small number of data packets to the user equipment during the backhaul link time, if the base station still splits the data to the branching node, As a result of the waste of time, the obtaining unit 201 needs to acquire the backhaul link time between the base station and the offloading node. The determining unit 202 is configured to determine data of a first amount of data sent during the backhaul link time. Specifically, the determining unit 202 may determine, according to the transmission capability information of the base station, a first data quantity that can be transmitted to the UE in the backhaul link time; where the transmission capability information of the base station may include At least one of the following information: throughput information of the base station to the UE, bit rate information of the base station to the UE, and a data transmission rate of the base station to the UE. The allocating unit 203 is configured to allocate data of the second data amount and the third data amount to the base station and the distribution node respectively, where the sum of the second data amount and the third data quantity is to be sent a difference between the amount of data to the user equipment UE and the first amount of data. The amount of data to be sent by the base station to the UE is the amount of data to be sent to the UE that is buffered at the base station. Specifically, the allocating unit 203 may determine, according to information about the air interface capability of the base station and the offload node, to allocate data of the second data volume and the third data amount to the base station and the offload node, respectively. The sending unit 204 is configured to send the data of the third data amount to the offload node. After the allocating unit 203 determines the second data amount allocated to the base station and the third data amount allocated to the branching node, the sending unit 204 sends the data of the third data amount to the shunt node. The sending unit 203 is further configured to send the data of the first data amount and the second data amount to the UE. After the allocating unit 203 determines the second data amount allocated to the base station and the third data amount allocated to the branching node, the sending unit 204 will use the first data amount and the second data amount. Data is sent to the UE. The embodiment of the present invention provides a base station, when the base station allocates the offloaded data to the offloading node, taking into account the backhaul link time between the base station and the offloading node, so that the base station can more reasonably The offloaded data is allocated to the offloading node, and the base station allocates the offloaded data to the offloading node more reasonably, so that the time for the user equipment UE to receive the same amount of data becomes shorter, thereby obtaining the gain of the UE throughput. Further, in order to enable the base station to allocate the offloaded data to the offloading node more reasonably, the base station further includes: a receiving unit 205; the receiving unit 205, configured to receive the offloading reported by the offloading node or the user equipment The air interface capability information of the node, the air interface capability information includes a throughput and/or a bit rate and/or a CQI; the allocating unit 203 is configured to use, according to the throughput of the base station and the offload node, The bit rate and/or CQL allocates data of the second data amount and the third data amount to the base station and the offload node, respectively. In the embodiment of the present invention, when the base station allocates the data of the second data amount and the data of the third data amount to the base station and the offload node respectively, the air interface capability of the base station and the offload node are The base station provided by the embodiment of the present invention can allocate the offloaded data more reasonably, taking into account the information such as the throughput, the bit rate, and the CQI, taking into account the backhaul link time between the base station and the offloading node. Go to the split node. Further, the receiving unit 205 is further configured to: receive a offloading indication message sent by the offloading node, where the offloading indication message includes information about whether the base station sends data to the offloading node; if the offloading indication message includes The base station sends information about the data to the offload node, and the allocating unit 203 is configured to: allocate the data of the second data volume and the third data amount to the base station and the offload node respectively; The unit 204 is configured to send data of the third data amount to the offload node.

Sending the data of the first data amount and the second data amount to the UE; if the offload indication message includes information that the base station does not send data to the offload node, the sending unit 204 is configured to: Data to be sent to the UE is sent to the UE. In the embodiment of the present invention, the current load situation of the offloading node is taken into consideration, and the offloading node determines whether the base station can be offloaded according to whether the amount of data in the current cache exceeds a certain threshold. The node sends the offloaded data, and sends a offloading indication message to the base station, where the offloading indication message indicates that the base station may or may not send the message of the offloading data to the offloading node. In this manner, the base station can further The offloading data is allocated to the offloading node reasonably, so as to prevent the shunting data from causing congestion at the branching node, and even causing packet loss. Optionally, the receiving unit 205 is further configured to: receive an alert message sent by the offload node, where the alert message carries a GTP-U sequence number of the data that the split node requests to be retransmitted by the base station; The sending unit 204 is further configured to resend the data corresponding to the GTP-U sequence number to the offload node. In the implementation of the present invention, when the packet is lost, the base station receives the alert message sent by the offload node, and the alert message carries the GTP of the data that the split node requests to be retransmitted by the base station. And the base station retransmits the data corresponding to the GTP-U sequence number to the offload node according to the GTP-U sequence number, thereby reducing packet loss in the process of sending the offload data by the base station to the offload node. phenomenon. Specifically, the embodiment of the present invention further provides a solution for determining, by the base station, data of a first data amount that is sent in the backhaul link time: Solution 1: The receiving unit 205 receives an operation, management, and maintenance system. The backhaul link time of the OAM configuration is as follows: The sending unit 204 sends a probe message to the offload node, where the probe message is used to request the offload node to send a backhaul link time;

The receiving unit 205 receives the backhaul link time sent by the offloading node; Option 3: the receiving unit 205 receives the beacon information sent by the offloading node; the determining unit 202 determines the according to the beacon information. The backhaul link time is as follows: the sending unit 204 sends the first data packet to the offloading node, where the first data packet carries the timestamp information that the sending unit sends the first data packet; The receiving unit 205 receives the second data packet sent by the UE, where the second data packet carries the timestamp information of the first data packet sent by the sending unit, and the time when the first data packet arrives at the branching node. The determining unit 202 determines the backhaul link time according to the timestamp information of the first data packet sent by the sending unit, and the timestamp information of the first data packet reaching the branching node. Further, in order to avoid that the amount of data sent by the base station to the UE is small, the base station still allocates the offloaded data to the offloading node, causing waste of resources. Referring to FIG. 4, the base station further includes: a comparing unit 206; The comparing unit 206 is configured to send the first data amount and the base station to be sent to the Comparing the data amount of the UE; if the comparing unit 206 determines that the first data amount is smaller than the data amount to be sent by the base station to the UE, the comparing unit 206 sends the first message to the allocating unit 203. The first message includes information that the first data amount is smaller than the amount of data that the base station is to send to the UE; the allocating unit 203 is configured to receive the first message, and use the second data. And the data of the third data amount are respectively allocated to the base station and the distribution node; the sending unit 204 is configured to send the data of the third data amount to the distribution node;

Transmitting, by the comparing unit 206, the first data amount and the second data amount to the UE; if the comparing unit 206 determines that the first data amount is greater than or equal to a data amount sent by the base station to the UE, the comparing The unit 206 sends a second message to the sending unit, where the second message includes information that the first data amount is greater than or equal to the amount of data sent by the base station to the UE. The sending unit 204 is configured to: Data of the amount of data to be transmitted to the UE is transmitted to the UE. In the embodiment of the present invention, the base station compares the amount of data to be sent to the UE with a first amount of data, and allocates the amount of data to be sent to the offload node when the amount of data to be sent is greater than the first amount of data. Offloading data, otherwise, the base station independently sends data to be sent to the UE to the UE, and avoids that when the amount of data to be sent by the base station to the UE is too small, the base station still allocates the data to the offloading node. The waste of resources caused by the shunting data and the increase of the load of the shunt node. It should be noted that, in the embodiment of the device of the present invention, specific technical features may be referred to the embodiment of the method of the present invention, and details are not described herein again. The embodiment of the invention provides a method for data transmission. As shown in FIG. 5, the method includes:

501. The base station acquires a backhaul link time between the base station and the offload node; and a backhaul link time between the base station and the offload node is a time used for data transmission between the base station and the offload node. In view of the fact that when there are only a small number of data packets in the base station, and the base station can send the small number of data packets to the user equipment during the backhaul link time, if the base station still splits the data to the branching node, This causes a waste of time, so the base station needs to acquire the backhaul link time between the base station and the offloading node. The base station acquiring the backhaul link time between the base station and the offloading node may adopt the following solution:

The backhaul link time between the base station and the offloading node may be configured by the receiving operation, management, and maintenance system OAM, and the base station may obtain the OAM, specifically: the base station requests the OAM to send the Backhaul link time between the base station and the offload node;

The receiving station receives a backhaul link time between the base station and the offloading node transmitted by the 0 AM. Option II:

The backhaul node may configure a backhaul link time between the base station and the offload node, and the base station may obtain a backhaul link time between the base station and the offload node from the offload node. Specifically, the base station sends a probe message to the offload node, where the probe message is used to request the offload node to send a backhaul link time; and the base station receives a backhaul link time sent by the offload node. The base station may periodically send a probe message to the offload node; or the base station may also determine, when the backhaul link time between the base station and the offload node, that the base station determines to send to the UE When the data is offloaded to the offload node, a probe message is sent to the offload node. If the base station periodically sends a probe message to the offload node, the solution specifically includes: the base station configuring a period in which the base station sends a probe message to the offload node; and the base station according to the period, to the The offloading node periodically sends a probe message. The probe message carries time information; the offload node receives the probe message, determines a backhaul link time according to the time information carried in the probe message, and sends the backhaul link time to the base station; The base station receives the backhaul link time sent by the offloading node. And sending, by the base station, a probe message to the offload node, where the determining, by the base station, determining, by the base station, that the data sent to the UE is offloaded to the And sending the probe message to the offload node, where the probe message carries time information; the offload node receives the probe message, and determines the backhaul link according to the time information carried in the probe message. Time, and sending the backhaul link time to the base station; the base station receiving the backhaul link time sent by the offload node. Solution 3: The base station receives beacon information sent by the offloading node, and determines the backhaul link time according to the beacon information. The base station may receive the beacon information sent by the offload node when the data to be sent to the UE is offloaded to the offload node, and may also receive the beacon information periodically sent by the offload node.

And receiving, by the base station, beacon information that is sent by the offloading node, where the determining, by the base station, is determined to be sent to the UE. Receiving the beacon information sent by the offloading node, the beacon information carrying time information; the base station determining the backhaul chain according to the time information carried by the beacon information Road time. The receiving, by the base station, the beacon information periodically sent by the offloading node, the method includes: the base station configuring a period in which the offloading node sends the beacon information; The base station periodically transmits the beacon information, where the beacon information carries time information; The base station receives the beacon information sent by the offloading node; the base station determines the backhaul link time according to the time information carried in the beacon information. Option 4:

The base station may detect the backhaul link time between the base station and the offload node by using a timestamp manner, and the specific process includes:

(1) The base station sends a first data packet to the offloading node, where the first data packet carries timestamp information of the first data packet sent by the base station; specifically, when the first data packet When the packet enters a packet data convergence protocol (English: Packet Data Convergence Protocol, PDCP for short), the base station adds timestamp information to the first data packet, and sends the first data packet to the traffic distribution node. The timestamp information may be a time identifier, such as adding a field of TIME: 1:00 in the data packet;

(2) The base station receives a second data packet sent by the UE, where the second data packet carries timestamp information that the base station sends the first data packet, and the first data packet arrives at the offloading Timestamp information of the node;

(3) determining a backhaul link time according to the timestamp information of the first data packet sent by the base station, and the timestamp information of the first data packet reaching the offload node; specifically, the backhaul link The time is the time difference between the timestamp information of the first data packet sent by the base station and the timestamp information of the first data packet reaching the branching node.

502. The base station determines to send data of a first data amount in the backhaul link time. Specifically, the base station may determine, according to the transmission capability information of the base station, a first data quantity that can be transmitted to the UE in the backhaul link time; where the transmission capability information of the base station may include the following information. At least one of: the throughput information of the base station to the UE, the bit rate information of the base station to the UE, and the data transmission rate of the base station to the UE.

503. The base station allocates data of the second data volume and the third data volume to the base station and the traffic distribution node, respectively, where a sum of the second data volume and the third data volume is the The difference between the amount of data sent to the user equipment UE and the first amount of data. The amount of data to be sent by the base station to the UE is the amount of data to be sent to the UE that is buffered at the base station. Specifically, the base station may determine, according to the throughput of the base station and the offloading node to the UE respectively, a second data amount and a third data amount allocated to the base station and the offload node. Of course, the base station may also determine a second data amount and a third data amount allocated to the base station and the offload node according to a data transmission rate of the base station and the offload node to the UE respectively. Optionally, the base station may determine, according to a bit rate of the base station and the offloading node to the UE, a second data amount and a third data amount that are allocated to the base station and the offload node. Of course, the base station may determine, according to the current working state of the base station and the offloading node, that is, whether the base station and the offloading node generate congestion, etc., determine a second allocation to the base station and the offloading node. The amount of data and the third amount of data. This embodiment of the present invention does not specifically limit this.

504. The base station sends the data of the third data amount to the offload node.

505. The base station sends the data of the first data volume and the second data volume to the

UE. The embodiment of the present invention provides a method for data transmission. Since the base station considers the backhaul link time of the base station and the offload node, the base station can more appropriately allocate the offload data to the The node is shunted, and the base station allocates the offloaded data to the offloading node more reasonably, so that the time for the UE to receive the data of the same amount of data becomes shorter, thereby obtaining the gain of the throughput of the UE.

Further, in order to more appropriately allocate the amount of data to be distributed to the offloading node, in addition to considering the backhaul link time between the base station and the offloading node, according to the air interface capability of the base station and the offloading node, The split node allocates data. Specifically, as shown in FIG. 6, the method includes: 601. The base station acquires a backhaul link time between the base station and the offload node.

602. The base station determines to send data of a first data amount in the backhaul link time.

603. The base station receives the air interface capability information of the traffic distribution node or the traffic distribution node, and the air interface capability information includes a throughput and/or a bit rate. Specifically, the time that the base station receives the air interface capability information of the traffic distribution node or the traffic distribution node that is reported by the UE may be before step 601 and step 602, or may be followed by steps 601 and 602. The receiving is performed at the same time. Specifically, the embodiment of the present invention does not limit this. Specifically, the throughput of the offload node is the amount of data that the offload node successfully transmits to the UE in a unit time. The greater the throughput of the offload node, the greater the amount of data that the offload node transmits to the UE in a unit time. The bit rate of the offload node is the number of bits successfully transmitted by the offload node to the UE in a unit time. The higher the bit rate of the offload node, the larger the number of bits transmitted by the offload node to the UE in a unit time. Specifically, if the base station receives the air interface capability information of the function of the offloading node that is reported by the UE, the process specifically includes: when the base station determines to offload data sent to the UE to the offload node, The base station may configure and send a feedback period T to the UE for the UE; the UE calculates an average throughput of the offload node to the UE in the feedback period T; and/or the UE is in the UE Calculating a bit rate of the data transmitted by the offloading node to the UE in the feedback period T; and/or calculating an average bit of the data transmitted by the offloading node to the UE in the feedback period T rate. Then, after calculating the average throughput and/or the bit rate and/or the average bit rate of the offloading node to the UE, the UE sends the average of the shunt node to the base station in the feedback period T. Throughput and / or bit rate and / or average bit rate. Specifically, if the base station receives the capability of the offload node reported by the offload node Air interface capability information, the process specifically includes:

(1) The base station sends a feedback start message to the offloading node, where the feedback start message carries a feedback process identifier and a feedback timer; the feedback process identifier may be identified by any integer, such as: feedback process 1, using And a feedback process for identifying, by the offloading node, the air interface capability information of the offload node to the base station. The feedback timer is specifically a period in which the offload node feeds back the air interface capability information of the offload node to the base station.

Optionally, the feedback start message may further include a UE identifier, and is used to indicate that the offload node feeds back the air interface capability information of the offloading node to the UE identified by the identifier.

The UE identifier may be at least one of the following: an application layer protocol user identifier, a cell radio network temporary identifier (English: Cell Radio Network Temporary Identifier, C-RNTI for short), and an access point identifier (English: Access Point) Identifier, referred to as: APID).

(2) The base station receives the feedback indication message sent by the offloading node, where the feedback indication message carries a feedback process identifier, the UE identifier, and air interface capability information of the offload node;

Specifically, the offloading node receives the feedback start message sent by the base station, and starts the feedback timer; the offload node determines the air interface capability information of the offload node; when the feedback timer expires, the The offloading node sends a feedback indication message to the base station. If the feedback start message carries the UE identifier, the air interface capability information of the feedback indication message offloading node is the air interface capability information of the UE identified by the offloading node to the identifier, and the UE identifier is the feedback start message. The UE ID carried. If the feedback start message does not carry the UE identifier, the air interface capability information of the feedback indication message offloading node is the air interface capability information of all the UEs in the coverage range of the offloading node, and the UE identifier is the offload node. The identity of all UEs under coverage. In order to reduce the processing capacity of the offloading node, the offloading node may only send a data packet to the base station, where the data packet includes the air interface capability of all the UEs under the coverage of the offloading node to the coverage node. The feedback of the information indicates the message.

(3) The base station receives a feedback stop message sent by the offload node, where the feedback The stop message carries the feedback process identifier. The feedback stop message is used by the base station to instruct the offload node to stop feeding back the air interface capability information of the offload node. Correspondingly, the feedback stop message may further include an identifier of the UE. If the feedback stop message includes the identifier of the UE, the feedback stop message is used by the base station to indicate that the offload node stops feeding back the air interface capability information of the offloading node to the UE identified by the identifier. Optionally, before the sending, by the base station, the feedback stop message to the base station, if the feedback timer and/or the UE identifier are updated, the method further includes: the base station may further perform the offloading The node sends a feedback update message, where the feedback update message carries the feedback process identifier, the updated feedback timer, and the updated UE identifier. The updated feedback timer is used to indicate that the offload node adjusts the offload node to The base station feeds back a period of the air interface capability information of the offload node. The updated UE identifier is used to indicate that the offloading node feeds back the air interface capability information of the UE identified by the offloading node to the updated UE identifier.

604. The base station allocates data of the second data volume and the third data amount to the base station and the offload node respectively according to throughput and/or bit rate of the base station and the offload node. Specifically, if the air interface capability information is a throughput, the base station allocates, according to the ratio of the throughput of the base station and the throughput of the offload node, the amount of data to be sent to the UE to the The base station and the offload node, that is, the second data amount and the third data amount. If the air interface capability information is a bit rate, the base station allocates, according to a ratio of a bit rate of the base station to a bit rate of the offload node, a data amount to be sent to the UE, respectively, to the base station and the The shunt node, that is, the second data amount and the third data amount.

If the air interface capability information is throughput and bit rate, the base station is configured according to a ratio of a throughput of the base station to a throughput of the offload node, and/or a bit rate of the base station and a The ratio of the bit rate, the data of the second data amount and the third data amount are respectively allocated to the base station and the branching node. The sum of the second data amount and the third data amount is a difference between a data amount to be sent to the UE and the first data amount.

For example, the amount of data to be sent by the base station to the UE is 100, and the base station determines the transmission capability of the base station in a unit time, and determines that the base station can transmit the first time in the backhaul link time. The amount of data is 10. The base station sends a third data amount 50 according to the air interface capability information of the traffic distribution node reported by the UE, such as the throughput, and the air interface capability information of the base station, such as a throughput ratio, assuming 5:4. The offloading node is sent by the offloading node to the UE, and the remaining second amount of data 40 is sent by the base station to the UE.

Further, because the channel conditions of the base station and the offloading node to the UE are different, the channel condition affects the amount of data sent by the base station and the offloading node to the U E unit time. Based on this, the base station allocates the offloaded data to the offloading node, and may also consider the channel condition of the base station and the offloading node to the UE respectively. specific,

The UE reports, to the base station, a channel quality indicator (CQI) of the base station and the offloading node to the UE respectively.

For the CQI, the UE may be calculated by using the following indicators, such as: Signal-to-noise ratio (SNR: SNR), signal to interference plus noise ratio (English: Signal to Interference plus Noise) Ratio, referred to as: SINR), Signal to Noise And Distortion Ratio (SNDR).

When the base station determines that the data to be sent to the UE is offloaded to the offloading node, the base station may configure the UE and send a feedback period T to the UE; the UE is in the feedback period T Computing, respectively, a CQI of the base station and the offloading node to the UE, such as an average CQI or CQI in a feedback period T; and then, in the feedback period T, the UE sends the to the base station The base station and the offload node respectively send CQI information to the UE. It should be noted that the CQI information may be sent together with the throughput and/or the bit rate information of the offload node.

605. The base station sends the data of the second data quantity to the UE. 606. The base station sends the data of the third data quantity to the distribution node. An embodiment of the present invention provides a data transmission method. In this technical solution, not only the backhaul link time between the base station and the offloading node is considered, but also the base station and the The air interface capability of the offloading node, such as the throughput, the bit rate, and the CQI, is taken into consideration. Therefore, the embodiment of the present invention enables the base station to further allocate the offloaded data to the base station when allocating data to the offloading node. The shunt node is rationalized.

Further, in order to improve the efficiency of sending data by the base station, when the amount of data to be sent by the base station to the UE is small, the base station further allocates offload data to the UE, and determines, at the base station, After the data of the first data amount is sent in the backhaul link time, the embodiment of the present invention provides a data sending method, and the method includes:

701. The base station acquires a backhaul link time between the base station and the offload node.

702. The base station determines to send data of a first data amount in the backhaul link time.

703. Compare the first data amount with an amount of data that the base station is to send to the UE.

704. If the base station determines that the first data amount is smaller than a data quantity that is sent by the base station to the UE, the base station allocates data of a second data quantity and a third data quantity to the base station and the Deriving a branching node; the base station transmitting data of the third data amount to the offloading node;

The base station transmits data of the first data amount and the second data amount to the UE. When the first data amount is smaller than the amount of data to be sent by the base station to the UE, the base station may improve the efficiency of data transmission by allocating the offload data to the offload node, and at this time, the base station will be the first The data of the second data volume and the third data volume are respectively allocated to the base station and the traffic distribution node. For the specific allocation process, refer to step 604 in the foregoing embodiment, which is not described herein again.

705. If the base station determines that the first data amount is greater than or equal to the amount of data that the base station is to send to the UE, the base station sends data of a data quantity to be sent to the UE to the UE. When the first data amount is greater than or equal to the amount of data to be sent by the base station to the UE, the base station passes the shunt node due to the existence of a backhaul link time between the base station and the offload node. The splitting may cause waste of resources, and the base station may independently send data to be sent to the UE to the UE. The embodiment of the present invention provides a method for data transmission, by comparing a first data amount sent by a base station to a branch node at a backhaul link time and a data amount to be sent by the base station to the UE, thereby avoiding a base station. When the amount of data to be sent to the UE is small, the base station still offloads the resources caused by the offloading node and increases the load of the offload node. In order to adjust the third data amount sent by the base station to the distribution node in time, so as to prevent the third data amount from being congested in the distribution node, causing delay or even loss of the third data amount, in the implementation of the present invention. A method for data transmission is provided, as shown in FIG. 8, the method includes:

801. The base station acquires a backhaul link time between the base station and the offload node.

802. The base station determines to send data of a first data amount in the backhaul link time.

803. The base station receives a offloading indication message sent by the offloading node, where the offloading indication message includes information about whether the base station sends data to the offloading node. In order to learn the cache information of the offloading node, the base station further receives the offloading indication message sent by the offloading node, where the process specifically includes: the offloading node determines the cache information of the offloading node, and the cached information includes the cached information. The amount of data to be sent to the UE by the offloading node, the offloading node compares the buffering information of the offloading node with a preset threshold, and sends the offloading indication message to the base station, where the preset threshold is a data volume value configured for the offload node by the OAM; if the buffer information of the offload node is greater than a preset threshold 1, the offload indication message includes that the base station cannot send data to the offload node. If the buffering information of the traffic distribution node is smaller than a preset threshold 2, the traffic distribution indication message includes information that the base station can send data to the traffic distribution node; and the base station receives the traffic distribution sent by the traffic distribution node. The indication message; wherein, in different network scenarios, the preset threshold 1 and the preset threshold 2 may be the same threshold, or Different width values, the present invention is not limited to this. In the process of receiving, by the base station, the offloading indication message sent by the offloading node, if the offloading indication message includes information that the base station may not send data to the offloading node, and the base station receives the offloading indication If the message fails, the base station continues to send the offloaded data to the offloading node, and the offloading node may be congested, resulting in packet loss. In order to improve the integrity and reliability of the data sent by the base station to the user equipment, the base station further receives the alert message sent by the traffic distribution node. The specific principle and process are as follows: The user layer exists between the base station and the traffic distribution node. The General Packet Radio Service (English: GPRS Tunneling Protocol for the User Plane, GTP-U) is used for data transmission. Among them, the GTP-U serial number is continuous. When the base station sends data to the offload node, the offload node detects whether the GTP-U sequence number of the data sent by the base station is continuous. If it is not continuous, it indicates that packet loss has occurred at this time. And the diverting node sends an alert message to the base station, where the alert message carries the GTP-U sequence number of the lost data; the base station receives the alert message, and resends the data carried by the alert message to the offload node. The data corresponding to the GTP-U serial number.

804. If the offload indication message includes information that the base station sends data to the offload node, the base station allocates data of the second data volume and the third data amount to the base station and the offload node, respectively. Transmitting, by the base station, data of the third data amount to the offload node; the base station transmitting data of the first data amount and the second data amount to the UE. The sum of the second data amount and the third data amount is a difference between a data amount to be sent to the UE and the first data amount.

Specifically, the specific implementation process of the step 804 can be referred to the step 604 in the foregoing embodiment, which is not repeatedly described in the embodiment of the present invention.

805. If the offload indication message includes information that the base station does not send data to the offload node, the base station sends data to be sent to the UE to the UE. An embodiment of the present invention provides a method for sending data, where the base station considers the buffer information of the offload node, and receives the offloading indication information sent by the offload node. Determining whether to send the offload data to the offload node, and avoiding the phenomenon that the third data amount is congested at the offload node, causing the third data amount to be delayed or even lost. The embodiment of the present invention provides a base station. As shown in FIG. 9, the base station includes a processor 901; a transmitter 902, a memory 903, and a communication bus 904 for implementing connection communication between the devices.

The communication bus 904 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus, or an Extended Industry Standard Architecture (abbreviated as EISA) Bus, etc. The bus 904 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 9, but it does not mean that there is only one bus or one type of bus. The memory 903 is for storing executable program code, the program code including computer operating instructions. The memory 803 may include a high speed RAM memory and may also include a non-volatile memory such as at least one disk memory. The processor 901 may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more configured to implement the embodiments of the present invention. integrated circuit. The processor 901 is configured to execute executable program code stored in the memory 903, such as a computer program, to execute a program corresponding to the executable code. Specifically, the processor 901 is configured to acquire a backhaul link time between the base station and the offloading node, where the processor 901 is further configured to determine a first amount of data sent in the backhaul link time. The processor 901 is further configured to allocate data of the second data volume and the third data amount to the base station and the traffic distribution node, respectively, where the second data volume and the third data volume are And a difference between the amount of data to be sent to the user equipment UE and the first data amount; the transmitter 902, configured to send data of the third data amount to the offload node; 902, configured to send data of the first data volume and the second data volume. Send to the user equipment UE. The embodiment of the present invention provides a base station, because the base station considers the backhaul link time of the base station and the offload node, which enables the base station to allocate data more reasonably when allocating data to the offload node. The data is shunted to the offload node, while the time at which the UE receives data of the same amount of data becomes shorter, thereby obtaining a gain of UE throughput. Optionally, in order to allocate the amount of the offloaded data to the offloading node, the base station further includes: a receiver 905, where the receiver 905 is configured to receive the report reported by the offload node. The air interface capability information of the traffic distribution node, where the air interface capability information includes a throughput and/or a bit rate, and the processor 901 is configured to: according to the throughput and/or the bit rate of the base station and the offload node, Data of the second data amount and the third data amount are respectively allocated to the base station and the branching node. In order to timely adjust the third data amount sent by the base station to the offload node, so that the third data amount is not congested in the offload node, causing delay or even loss of the third data amount, the receiver 905. The 901 is further configured to receive the offloading indication message sent by the offloading node, where the offloading indication message includes information about whether the base station sends data to the offloading node, and the processor 901 is configured to: if the offloading indication message And including the information that the base station sends data to the offload node, and the data of the second data volume and the third data amount are respectively allocated to the base station and the offload node; the transmitter 902 is configured to The data of the third data volume is sent to the traffic distribution node; the data of the first data volume and the second data volume is sent to the UE; the transmitter 902 is further configured to: if the traffic distribution indication message includes The base station does not send information of the data to the offloading node, and sends data to be sent to the UE to the UE. In order to improve the integrity and reliability of the data sent by the base station to the user equipment, the receiver 905 is further configured to receive an alert message sent by the offload node, where the alert message carries a GTP-U sequence number of the lost data; The transmitter 902 is further configured to resend data corresponding to the GTP-U sequence number of the data carried by the reminder message to the offloading node. Optionally, the receiver 905 is further configured to receive the air interface capability information of the traffic distribution node that is reported by the user equipment, where the air interface capability information includes a throughput and/or a bit rate, where the processor 901 is specific. And configured to allocate data of the second data amount and the third data amount to the base station and the offload node respectively according to throughput and/or bit rate of the base station and the offload node. The channel condition affects the amount of data sent by the base station and the offloading node to the UE in a unit time period due to a large difference in channel conditions between the base station and the offloading node to the UE. Based on this, the receiver 905 is further configured to receive a channel quality indicator CQI reported by the user equipment;

The processor 901 is specifically configured to allocate, according to the CQI of the base station and the offload node, data of a second data amount and a third data amount to the base station and the offload node, respectively.

Optionally, the receiver 905 is specifically configured to receive a backhaul link time for operating, managing, and maintaining the OAM configuration of the system; or the transmitter 902 is specifically configured to send a probe message to the offload node, where the probe The message is used to request the offloading node to send a backhaul link time; the receiver 905 is specifically configured to receive a backhaul link time sent by the offloading node; or

The receiver 905 is specifically configured to receive the beacon information sent by the offloading node, where the processor 901 is specifically configured to determine the backhaul link time according to the beacon information; or

The transmitter 902 is specifically configured to send a first data packet to the offloading node, where the first data packet carries timestamp information that the transmitter 902 sends the first data packet; the receiver 905 Specifically, the method is configured to receive a second data packet sent by the UE, where the second data packet carries timestamp information that the transmitter 902 sends the first data packet, and the first data packet arrives at the traffic distribution node. The timestamp information is determined by the processor 901, configured to send timestamp information of the first data packet according to the sender 802, and timestamp information of the first data packet to the branching node, to determine Backhaul link time. The processor 901 is further configured to compare the first data amount with a data amount to be sent by the base station to the UE, where the first data amount is smaller than And the data of the second data volume and the third data amount are respectively allocated to the base station and the traffic distribution node; the transmitter 902 is further configured to: Three data amounts of data are sent to the offload node;

Transmitting, by the processor 901, the first data amount and the second data amount to the UE; if the processor 901 determines that the first data amount is greater than or equal to a data amount that the base station is to send to the UE, The transmitter 902 is configured to: send data of an amount of data to be sent to the UE to the UE. For the detailed technical features of the various parts in the embodiments of the present invention, reference may be made to the corresponding technical features of the foregoing method embodiments, and details are not described herein again. The embodiment of the present invention provides a base station, wherein the base station considers the backhaul link time of the base station and the offload node, and the air interface capability information and the cache information of the offload node, which causes the base station to When the offloading node allocates data, the offloaded data can be allocated to the offloading node more reasonably, and the time for the UE to receive the same amount of data is shortened, thereby obtaining the gain of the UE throughput. A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk. The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

claims

1. A base station, characterized in that the base station includes: an acquisition unit, a determination unit, an allocation unit and a sending unit; the acquisition unit is used to acquire the backhaul link time between the base station and the offloading node; the The determining unit is used to determine the first data amount of data sent within the backhaul link time; the allocation unit is used to allocate the second data amount and the third data amount of data to the base station and the base station respectively. The offloading node, wherein the sum of the second data amount and the third data amount is the difference between the data amount to be sent to the user equipment UE and the first data amount; the sending unit is used to send the The data of the third data amount is sent to the offloading node; the sending unit is also configured to send the data of the first data amount and the second data amount to the UE.

2. The base station according to claim 1, characterized in that, the base station further includes: a receiving unit;

The receiving unit is configured to receive the air interface capability information of the offload node reported by the offload node, where the air interface capability information includes throughput and/or bit rate; According to the throughput and/or bit rate of the offload node, the second data amount and the third data amount are allocated to the base station and the offload node respectively.

3. The base station according to claim 1 or 2, characterized in that the receiving unit is also used for:

Receive an offload indication message sent by the offload node, where the offload indication message includes information on whether the base station sends data to the offload node; if the offload indication message includes information on whether the base station sends data to the offload node; , the allocation unit is used to: allocate the second data amount and the third data amount to the base station and the offloading node respectively; the sending unit is used to allocate the third data amount to Send to the offload node; Send the first data amount and the second data amount to the UE; If the offload indication message includes information that the base station does not send data to the offload node, the sending unit is configured to: send the data to be sent to the UE to the UE.

4. The base station according to claim 1, characterized in that, the receiving unit is further configured to: receive air interface capability information of the offload node reported by the user equipment, where the air interface capability information includes throughput and/or bit rate; the allocation unit, configured to allocate the second data amount and the third data amount to the base station and the offload node respectively according to the throughput and/or bit rate of the base station and the offload node. .

5. The base station according to claim 2 or 4, characterized in that, the air interface capability information also includes a channel quality indicator CQI; the allocation unit is configured to, according to the CQI of the base station and the offload node, The second data amount and the third data amount are allocated to the base station and the offloading node respectively.

6. The base station according to any one of claims 1 to 5, characterized in that, the receiving unit is also used to receive a reminder message sent by the offload node, the reminder message carries the offload node's request for the base station The GTP-U sequence number of the retransmitted data; the sending unit is also configured to resend the data corresponding to the GTP-U sequence number to the offloading node.

7. The base station according to any one of claims 1 to 6, characterized in that, the receiving unit is used to receive the backhaul link time configured by the operation, management and maintenance system OAM; or the sending unit is used to receive Send a detection message to the offload node, where the detection message is used to request the offload node to send a backhaul link time; the receiving unit receives the backhaul link time sent by the offload node; or the receiving unit uses to receive the beacon information sent by the offload node; the determining unit is used to determine the backhaul link time according to the beacon information; or the sending unit is used to send the first data to the offload node packet, the first data packet carries the timestamp information of the first data packet sent by the sending unit; the receiving unit is used to receive the second data packet sent by the UE, the second data packet Carrying the time stamp information of the first data packet sent by the sending unit, and the time stamp information of the first data packet arriving at the offloading node; the determining unit is configured to send the first data packet according to the sending unit The time stamp information of the first data packet and the time stamp information of the first data packet arriving at the offload node determine the backhaul link time.

8. The base station according to any one of claims 1 to 7, characterized in that, the base station further includes: a comparison unit; the comparison unit is used to compare the first data amount and the data to be sent by the base station to the Compare the data volume of the above UE;

If the comparison unit determines that the first data amount is less than the data amount to be sent by the base station to the UE, the comparison unit sends a first message to the allocation unit, and the first message includes the first Information with a data amount smaller than the data amount to be sent by the base station to the UE;

The allocation unit is configured to allocate the second data amount and the third data amount to the base station and the offload node respectively after receiving the first message; the sending unit is used to transfer the Send the third data amount to the offload node; send the first data amount and the second data amount to the UE; if the comparison unit determines that the first data amount is greater than or equal to the base station The amount of data sent to the UE, the comparison unit sends a second message to the sending unit, the second message contains the amount of data that the first data amount is greater than or equal to the amount of data sent by the base station to the UE. information;

The sending unit is configured to, after receiving the second message, send the amount of data to be sent to the UE to the UE.

9. A method of data transmission, characterized in that the method includes: the base station obtains the backhaul link time between the base station and the offloading node; the base station determines to send the first amount of data within the backhaul link time data; the base station allocates the second data amount and the third data amount to the base station and the offloading node respectively, wherein the sum of the second data amount and the third data amount is to be sent to the user The difference between the data amount of user equipment UE and the first data amount; The base station sends the third data amount to the offloading node; The base station sends the first data amount and the second data amount amount of data is sent to the UE.

10. The method according to claim 9, wherein the method further includes: the base station receiving the air interface capability information of the offload node reported by the offload node, and the air interface capability information includes throughput and/or Bit rate; The base station allocates the second data amount and the third data amount to the base station and the offload node respectively. Specifically: the base station distributes the data according to the throughput and/or of the base station and the offload node. Bit rate, allocate the second data amount and the third data amount to the base station and the offload node respectively.

1 1. The method according to claim 9 or 10, characterized in that, before the base station sends the third data amount to the offloading node, the method further includes: the base station receives the offloading node. The offload instruction message sent by the node, the offload indication information includes information on whether the base station sends data to the offload node; if the offload instruction message includes the information on whether the base station sends data to the offload node, so The base station allocates the second data amount and the third data amount to the base station and the offload node respectively; the base station sends the third data amount to the offload node; the base station Send the first data amount and the second data amount to the UE; if the offload indication message includes information that the base station does not send data to the offload node, the method further includes: the base station will Data to be sent to the UE is sent to the UE.

12. The method according to claim 9, characterized in that, the method further includes: the base station receiving the air interface capability information of the offload node reported by the user equipment, and the air interface capability information includes throughput and/or Bit rate; The base station allocates the second data amount and the third data amount to the base station and the third data amount respectively. The offload node specifically includes: the base station allocates the second data amount and the third data amount to the base station and the offload node respectively according to the throughput and/or bit rate of the base station and the offload node. Describe the shunt node.

13. The method according to claim 10 or 12, characterized in that, the air interface capability information further includes a channel quality indicator CQI; the base station allocates data of the second data amount and the third data amount to the The base station and the offload node specifically include: the base station allocates the second data amount and the third data amount to the base station and the offload node respectively according to the CQI of the base station and the offload node.

14. The method according to any one of claims 9 to 13, characterized in that, after the base station sends the third data amount of data to the offload node, the method further includes: the base station receives The reminder message sent by the offload node, the reminder message, carries the GTP-U sequence number of the data that the offload node requests the base station to resend; the base station resends the GTP-U to the offload node. The data corresponding to the serial number.

15. The method according to any one of claims 9 to 14, wherein the base station obtaining the backhaul link time between the base station and the offload node specifically includes: the base station receiving an operation, management and maintenance system ΟΑM configured backhaul link time; or the base station sends a detection message to the offload node, the detection message is used to request the offload node to send the backhaul link time; the base station receives the backhaul link sent by the offload node or the base station receives the beacon information sent by the offload node and determines the backhaul link time according to the beacon information; or the base station sends the first data packet to the offload node, The first data packet carries the timestamp information of the first data packet sent by the base station; the base station receives the second data packet sent by the UE, and the second data packet carries the time stamp information of the first data packet sent by the base station. timestamp information of a data packet, and the arrival of the first data packet at the Timestamp information of the offload node; Determine the backhaul link time according to the timestamp information of the first data packet sent by the base station and the time stamp information of the first data packet arriving at the offload node.

16. The method according to any one of claims 9 to 15, characterized in that, after the base station determines to send the first amount of data within the backhaul link time, the method further includes: Compare an amount of data with the amount of data to be sent by the base station to the UE; if the base station determines that the first amount of data is less than the amount of data to be sent by the base station to the UE, the base station will The data amount and the third data amount are allocated to the base station and the offload node respectively; the base station sends the third data amount to the offload node; the base station sends the first data amount and the second data amount is sent to the UE; if the base station determines that the first data amount is greater than or equal to the data amount to be sent by the base station to the UE, the base station will send the data to the UE. A data amount of data is sent to the UE.

17. A base station, characterized in that the base station includes: a processor and a transmitter; the processor is configured to obtain the backhaul link time between the base station and the offloading node; the processor is also configured to Determine the first amount of data sent within the backhaul link time; the processor is also configured to allocate the second amount of data and the third amount of data to the base station and the offload node respectively, Wherein, the sum of the second data amount and the third data amount is the difference between the data amount to be sent to the user equipment UE and the first data amount; the transmitter is used to send the third data amount The data is sent to the offload node; the transmitter is further configured to send the first data amount and the second data amount to the UE.

18. The base station according to claim 17, characterized in that, the base station further includes: a receiver; the receiver is configured to receive the air interface capability information of the offload node reported by the offload node, the air interface capability Information includes throughput and/or bitrate; The processor is configured to allocate the second data amount and the third data amount to the base station and the offload node respectively according to the throughput and bit rate of the base station and the offload node.

19. The base station according to claim 17 or 18, characterized in that the receiver is further configured to: receive an offload indication message sent by the offload node, the offload indication message includes whether the base station offloads traffic to the Information about the data sent by the node;

The processor is configured to, if the offload instruction message includes information that the base station sends data to the offload node, allocate the second data amount and the third data amount to the base station and the offload node respectively. The offload node; the transmitter, configured to send the third data amount to the offload node; send the first data amount and the second data amount to the UE; the transmitter It is also configured to: if the offload indication message includes information that the base station does not send data to the offload node, send the data to be sent to the UE to the UE.

20. The base station according to claim 17, wherein the receiver is further configured to receive air interface capability information of the offload node reported by the user equipment, and the air interface capability information includes throughput and/or bit rate; the processor, configured to allocate the second data amount and the third data amount to the base station and the offload node respectively according to the throughput and/or bit rate of the base station and the offload node. .

21. The base station according to claim 18 or 20, characterized in that, the air interface capability information also includes a channel quality indicator CQI; the processor is specifically configured to perform according to the CQI of the base station and the offloading node, Distribute the second data amount and the third data amount to the base station and the offload node respectively.

22. The base station according to any one of claims 17 to 21, characterized in that the receiver is further configured to: receive a reminder message sent by the offload node, the reminder message carries the information requested by the offload node. GTP-U sequence number of data retransmitted by the base station; The transmitter is also configured to resend the data corresponding to the GTP-U sequence number to the offload node.

23. The base station according to any one of claims 17 to 22, characterized in that the receiver is also used to: receive the backhaul link time configured by the operation, management and maintenance system OAM; the transmitter is used to Send a detection message to the offload node, the detection message is used to request the offload node to send the backhaul link time; the receiver is used to receive the backhaul link time sent by the offload node; the receiver, Also used to receive beacon information sent by the offload node;

The processor is configured to determine the backhaul link time based on the beacon information; the transmitter is further configured to send a first data packet to the offload node, the first data packet carrying the The sender sends the timestamp information of the first data packet;

The receiver is also configured to receive a second data packet sent by the UE, the second data packet carries the timestamp information of the first data packet sent by the sender, and the first data packet arrives at Describe the timestamp information of the offload node;

The processor is further configured to determine the backhaul link time based on the timestamp information of the first data packet sent by the sender and the time stamp information of the first data packet arriving at the offload node.

24. The base station according to any one of claims 17-23, wherein the processor is further configured to: compare the first data amount with the data amount to be sent by the base station to the UE. ; If the first data amount is less than the data amount to be sent by the base station to the UE, allocate the second data amount and the third data amount to the base station and the offload node respectively; the transmitter Also used for: sending the data of the third data amount to the offload node; sending the data of the first data amount and the second data amount to the UE;

If the processor determines that the first data amount is greater than or equal to the data amount to be sent by the base station to the UE, the transmitter is configured to: send data of the data amount to be sent to the UE to the UE .