WO2014117751A1 - Data transmission method, user equipment, and base station - Google Patents

Abstract

Embodiments of the present invention provide a data transmission method, a user equipment UE, and a base station. The method comprises: the UE comparing the data amount of cached data of the UE with a first cached data amount threshold corresponding to the cached data of the UE; if the data amount of the cached data of the UE is less than the corresponding first cached data amount threshold, the UE sending low cached data amount indication information to a second base station, wherein the low cached data amount indication information is used for instructing the second base station to stop providing uplink scheduling for the UE; and the UE accepts an offloading service provided by at least two base stations comprising a first base station and the second base station. In the embodiments of the present invention, the data amount of the cached data of the UE is compared with the corresponding first cached data amount threshold, and when the data amount of the cached data of the UE is less than the corresponding first cached data amount threshold, the second base station is instructed to stop providing uplink scheduling for the UE, thereby improving the utilization efficiency of the scheduling resources.

Description

 Data transmission method, user equipment and base station

 The present application claims priority to Chinese Patent Application No. 201310040962.5, entitled "Method of Data Transmission, User Equipment and Base Station", filed on February 1, 2013, the entire contents of which are incorporated herein by reference. In the application. Technical field

Embodiments of the present invention relate to the field of communications, and more particularly, to a method, user equipment, and base station for data transmission. Background technique

 A plurality of logical channels of a User Equipment (UE) are classified into different logical channel groups (LCGs), and each logical channel group has different priorities when the base station is scheduled. When the UE is in the state of the Butter Status Report (BSR), the amount of data to be sent of each logical channel group is counted and reported separately for the base station to make an accurate scheduling decision. If the UE does not trigger the BSR, but after the data packet is released, there are some spare radio resources, and the data cannot be released. At this time, the UE sends a truncated BSR or Padding BSR. If the UE has multiple logical channel groups to send data at this time, the UE sends a truncated BSR to the base station, where the amount of data to be sent of the logical channel group with the highest priority and data to be sent is included; If the logical channel group has data to be sent, the UE sends a padding BSR to the base station, and only includes the amount of data to be sent of the logical channel group with the data.

 The UE sends the BSR itself to the base station, and the uplink resource is also required. The base station allocates the uplink resource to the UE at the required time, so that the BSR is successfully reported to the BSR. To this end, the Long Term Evolution (LTE) system introduces a Scheduling Request (SR) mechanism to configure some SR resources for the UE. These SR resources occur periodically and are small in themselves. The UE informs the base station through the SR resource that there is data to be transmitted on the UE side. As for how much data is to be sent, the BSR detailed indication is also required.

Some conditions for triggering BSR are specified in the current agreement. As long as these conditions are met, the UE side touches When a BSR is generated, the UE does not generate a specific BSR. When the uplink resource is available, the UE collects the amount of data to be sent at the time of transmission, generates a BSR, and sends the BSR to the base station.

 With the development of mobile communication technology and the increase in the number of people using mobile data services, the load of existing macro cells is getting heavier and heavy. In order to provide better services to users, the 3rd Generation Partnership Project (the 3rd Generat i on Partner Project (3GPP) introduced Carrier Aggregation (CA) technology.

 In the CA technology, multiple base stations can be used to provide services for the same UE. For example, a micro base station (Sma lce1) and a macro base station (macro eNB) cooperate to provide services for the UE. The micro base station herein may also be referred to as a small cell, and may be, for example, a home base station (HeNB), a micro base station (pi co eNB), a relay station (re yy), and a radio remote control (rad io remote head, referred to as RRH). ) For the transmission point, the coverage and transmission power are relatively small, and the macro base station has a wide coverage and a large transmission power. Functionally, the macro base station can provide wide coverage and is responsible for control signaling, while the small cell can provide user data enhancement and is responsible for all or part of the user service data. This mode can also be called the cross-station shunt mode.

 In the UE in the inter-station offload mode, the uplink scheduling of the UE may be caused by multiple sites, which may cause the base station to send uplink scheduling resources. However, the UE does not have uplink data to be sent, which causes waste of scheduling resources. Summary of the invention

The embodiments of the present invention provide a data transmission method, a user equipment, and a base station, which can coordinate scheduling resources allocated by the base station in the split mode to the UE, and improve resource utilization efficiency.

In a first aspect, a data transmission method is provided, including: comparing, by a user equipment, UE, a data amount of cached data of the UE with a first cache data amount threshold corresponding to the cached data of the UE; and if the UE caches data If the amount of data is less than the first buffered data volume threshold corresponding to the buffered data of the UE, the UE sends a low buffered data volume indication information to the second base station, where the low buffered data volume indication information is used to indicate that the second base station stops The UE provides an uplink scheduling, where the UE accepts the first a traffic distribution service of at least two base stations, a base station and the second base station, the first base station is used to

The UE provides uplink scheduling for the UE when the data amount of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE.

In a first possible implementation, in combination with the first aspect, the first base station is a control base station, or the second base station is the control base station; wherein the control base station is responsible for the at least two base stations. A base station that manages the mobility of the UE.

In a second possible implementation manner, in combination with the first possible implementation manner of the first aspect, the method further includes: receiving the first buffered data volume threshold, where the first buffered data threshold is determined by the control base station send.

In a third possible implementation manner, in combination with the first possible implementation manner of the first aspect or the second possible implementation manner of the first aspect, the specific implementation is: as the cache data used by the UE When the amount of data is smaller than the first buffered data volume threshold corresponding to the buffered data of the UE, the base station provides uplink scheduling for the UE, and the first base station is a predetermined base station; or the first base station determines and directs the control base station. The base station notified by the UE; or the first base station is a base station selected by the UE. In a fourth possible implementation manner, combining the first aspect or the first possible implementation manner of the first aspect to any one of the possible implementation manners of the third possible implementation manner of the first aspect, the UE The second base station sends the low buffer data volume indication information to: the UE directly sends the low buffer data volume indication information to the second base station; or the UE sends the low buffer data volume indication to the second base station by using the first base station Or the UE directly sends the low buffered data amount indication information to the first base station and the second base station.

In a fifth possible implementation manner, the first possible implementation manner of the first aspect or the first possible implementation manner of the first aspect to the fourth possible implementation manner of the first aspect is implemented as The data volume of the cached data of the UE is the data volume of the cached data of all the first services of the UE; the first buffered data volume threshold is the data volume threshold of the cached data of all the first services of the UE. The data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE, where the data volume of the cached data of all the first services of the UE is smaller than the first The data volume threshold is stored; wherein the first service is a traffic offload service, or the first service includes a traffic offload service and a non-offload traffic service.

In a sixth possible implementation manner, the first possible implementation manner of the first aspect or the first possible implementation manner of the first aspect to the fourth possible implementation manner of the first aspect is implemented as The data amount of the buffered data of the UE is the data amount of the buffered data of each first logical channel group LCG of the UE; the first buffered data volume threshold is a data volume threshold corresponding to the first LCG, The threshold value of the first cached data corresponding to each of the first LCGs is the same or different; the data volume of the buffered data of the UE is smaller than the first cached data threshold corresponding to the cached data of the UE, including: The data volume of the buffer data of the first LCG is smaller than the first cache data volume threshold corresponding to the LCG; wherein the first LCG is an LCG that includes a traffic offload service, or the first LCG includes an LCG that includes a traffic offload service and Contains the LCG for the offloading service.

In a seventh possible implementation, the first possible implementation manner of the first aspect or the first possible implementation of the first aspect to the fourth possible implementation manner of the first aspect is specifically implemented as The data volume of the buffered data of the UE is the data volume of the buffered data of each of the offloaded services of the UE; the first buffered data volume threshold is a data volume threshold corresponding to one offload service, and each of the traffic distribution services corresponds to The threshold value of the first buffered data is the same or different; the data volume of the cached data of the UE is smaller than the first cached data threshold corresponding to the cached data of the UE, and the cached data of each offloaded service of the UE is included. The amount of data is smaller than the first buffered data amount threshold corresponding to the traffic offloading service.

In an eighth possible implementation manner, in combination with the first aspect or the first possible implementation manner of the first aspect, to any one of the possible implementation manners of the seventh possible implementation manner of the first aspect, The low buffered data amount indication information is represented by a BSR with zero cached data; or the low cached data volume indication information is represented by a control element of the medium access control layer; or the low cached data volume indication information is used by the medium access control layer The subheader representation; or the low buffered data amount indication information is represented by physical layer indication information.

In a ninth possible implementation, the first aspect or the first possible implementation of the first aspect is combined The method to any one of the possible implementation manners of the first aspect, the method further includes: sending, by the UE, a first buffer status report BSR to the first base station; and receiving, by the UE, the uplink scheduling sent by the first base station The UE sends the first uplink data of the UE to the second base station according to the uplink scheduling information.

In a tenth possible implementation manner, in combination with the ninth possible implementation manner of the first aspect, the method is: if the UE sends the first BSR to the first base station, send the Before the first uplink data, the uplink data is sent to the second base station, and the first uplink data carries the second BSR of the UE, so that the first base station learns the current BSR of the UE.

In an eleventh possible implementation manner, in combination with the first possible implementation manner of the first aspect, the method further includes: comparing a data volume of the cache data of the UE at the moment with a second cache data volume corresponding to the cache data of the UE. The threshold value, wherein the second buffered data amount threshold is the first cached data amount threshold, or the second cached data threshold is greater than the first cached data threshold.

In a twelfth possible implementation manner, the eleventh possible implementation manner of the first aspect is implemented as follows: The second buffered data volume threshold is determined by the control base station.

In a thirteenth possible implementation manner, in combination with the eleventh possible implementation manner of the first aspect or the twelfth possible implementation manner of the first aspect, the method further includes: if the UE is currently buffering data data If the quantity is smaller than the second buffered data volume threshold corresponding to the buffered data of the UE, the uplink scheduling request information is sent to the first base station, and the uplink scheduling request information or the BSR information is not sent to the second base station; or if the UE is at the moment Sending the uplink scheduling request information to the first base station, and sending an indication indicating that the buffer data amount is 0 to the second base station, where the data volume of the cached data is smaller than the second buffered data volume threshold corresponding to the cached data of the UE. Information or indication information indicating that the first base station transmits the buffered data of the UE.

In a fourteenth possible implementation manner, in combination with the eleventh possible implementation manner of the first aspect or the twelfth possible implementation manner of the first aspect, the method further includes: if the UE is cached in the UE If the data volume of the data is greater than the second buffer data threshold corresponding to the buffered data of the UE, the UE resumes the BSR trigger mechanism and/or the data offload transmission mechanism of the second base station to the UE. In a fifteenth possible implementation, the fourteenth possible implementation manner of the first aspect is implemented as follows: if the amount of data of the cached data of the UE in the UE is greater than the cached data of the UE In the case of the second buffered data volume threshold and the duration is greater than or equal to the predetermined time value, the UE resumes the BSR trigger mechanism and/or the second base station's data offload transmission mechanism for the UE.

In a sixteenth possible implementation, in combination with the fifteenth possible implementation of the first aspect, the specific implementation is: the predetermined time value is determined by the control base station.

In a seventeenth possible implementation manner, in combination with the fourteenth possible implementation manner of the first aspect, to any one of the possible implementation manners of the sixteenth possible implementation manner of the first aspect, the UE recovers the UE The BSR triggering mechanism and/or the data offloading and transmitting mechanism of the second base station to the UE is specifically implemented by: the UE sending the scheduling request information to the second base station, to trigger the second base station to provide an uplink scheduling for the UE; or Sending, by the UE, the indication information that the amount of data of the buffered data of the UE is greater than the threshold value of the second buffered data, to the first base station, to notify the second base station to participate in uplink scheduling of the UE; or The first base station sends the information requesting the second base station to assist the scheduling, so that the first base station notifies the second base station to participate in the uplink scheduling of the UE; or the UE receives the uplink scheduling recovery indication information sent by the first base station, and Recovering the uplink scheduling of the second base station according to the uplink scheduling recovery indication information, where the uplink scheduling recovery indication information carries the second base station to resume participation Uplink scheduling information of the UE.

In an eighteenth possible implementation manner, in combination with the first possible implementation manner of the first aspect, the method further includes: sending, by the UE, BSR information to the control base station, and not controlling the base station other than the base station to the at least two base stations. Send BSR information.

In a second aspect, a data transmission method is provided, including: receiving, by a second base station, low buffered data volume indication information of a user equipment UE, where the low buffered data volume indication information is used to indicate that the data volume of the cached data of the UE is lower than the a buffered data amount threshold corresponding to the buffered data of the UE, where the low buffered data amount indication information is sent by the UE or the low buffered data volume indication information is sent by the first base station; the second base station stops according to the low buffered data amount indication information Providing an uplink scheduling for the UE; where the UE Receiving a traffic distribution service of the at least two base stations, including the first base station and the second base station, where the data amount of the buffered data of the UE is smaller than the first buffered data volume corresponding to the cached data of the UE The UE provides uplink scheduling for the threshold.

In a first possible implementation, in combination with the second aspect, the specific implementation is: when the low buffered data volume indication information is sent by the first base station, the low buffered data volume indication information is used by the first base station to pass the first The interface between the base station and the second base station is sent to the second base station.

In a second possible implementation manner, in combination with the second aspect or the first possible implementation manner of the second aspect, the method further includes: receiving, by the second base station, recovery scheduling indication information sent by the UE or the first base station, the recovery The scheduling indication information indicates that the second base station resumes providing uplink scheduling for the UE.

In a third aspect, a data transmission method is provided, including: comparing, by a first base station, a data volume of a buffered data of a user equipment UE with a first cache data volume threshold corresponding to the cached data of the UE; The first base station sends low buffer data amount indication information to the second base station, where the data volume is smaller than the first cache data volume threshold corresponding to the cached data of the UE, where the low cache data amount indication information is used to indicate the second The base station stops providing the uplink scheduling for the UE. The UE receives the offload service of the at least two base stations including the first base station and the second base station, where the first base station is configured to use the data volume of the cached data of the UE is less than The UE provides uplink scheduling for the UE when the first cached data threshold corresponding to the cached data of the UE.

In a first possible implementation manner, in combination with the third aspect, the first base station compares the data volume of the cached data of the UE with the first cached data volume threshold corresponding to the cached data of the UE, where the first When the base station receives the BSR of the UE, the base station compares the data volume of the buffered data of the UE with the first buffered data volume threshold corresponding to the cached data of the UE; and/or the first base station provides uplink scheduling for the UE. Comparing the data amount of the cached data of the UE with the first cached data amount threshold corresponding to the cached data of the UE.

In a second possible implementation manner, the third base station or the first possible implementation manner of the third aspect is implemented by: the first base station is a control base station, or the second base station is a control base station; The control base station is a base station of the at least two base stations responsible for managing mobility of the UE. In a third possible implementation manner, the second possible implementation manner of the third aspect is implemented as follows: the first buffered data volume threshold is a predetermined threshold or a threshold determined by the control base station. .

In a fourth possible implementation, in combination with the third possible aspect, or the first possible implementation manner of the third aspect, the third possible implementation manner of the third aspect, the method further includes: The first base station sends first indication information to the UE, where the first indication information includes information that the second base station stops providing uplink scheduling for the UE.

In a fifth possible implementation, the first possible implementation manner of the third aspect or the third possible implementation of the third aspect to the fourth possible implementation manner of the third aspect, the method further includes: If the amount of data of the buffered data of the UE is greater than the second buffered data volume threshold corresponding to the cached data of the UE, the first base station sends recovery scheduling indication information to the second base station, where the recovery scheduling is performed. The indication information is used to indicate that the second base station resumes providing uplink scheduling for the UE.

In a sixth possible implementation, the first possible implementation manner of the third aspect or the third aspect, and the fifth possible implementation manner of the third aspect, the method further includes: The first base station sends second indication information to the UE, where the second indication information includes information that the second base station resumes providing uplink scheduling for the UE.

In a seventh possible implementation, in combination with the third aspect or the first possible implementation manner of the third aspect, the possible implementation manner of the sixth possible implementation manner of the third aspect, the method further includes: If the first base station is a control base station, the first base station receives the BSR information sent by the UE; if the first base station is not the control base station, the first base station does not receive the BSR information sent by the UE. In a fourth aspect, a data transmission method is provided, including: the first base station compares a data amount of the buffered data of the user equipment UE with a first cache data quantity threshold corresponding to the cached data of the UE; If the data volume of the data is smaller than the first buffer data threshold corresponding to the buffered data of the UE, the first base station stops providing uplink scheduling for the UE, where the UE accepts that the first base station and the second base station are included. a traffic off service of at least two base stations, the second base station is used to The uplink scheduling is provided for the UE when the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the buffered data of the UE.

In a first possible implementation manner, in combination with the fourth aspect, the first base station compares the data volume of the cached data of the UE with the first cached data volume threshold corresponding to the cached data of the UE, where the first When the base station receives the BSR of the UE, the base station compares the data volume of the buffered data of the UE with the first buffered data volume threshold corresponding to the cached data of the UE; and/or the first base station provides uplink scheduling for the UE. Comparing the data amount of the cached data of the UE with the first cached data amount threshold corresponding to the cached data of the UE.

In a second possible implementation manner, in combination with the fourth aspect or the first possible implementation manner of the fourth aspect, the first base station is a control base station, or the second base station is a control base station; The control base station is a base station of the at least two base stations responsible for managing mobility of the UE. In a third possible implementation manner, the second possible implementation manner of the fourth aspect is implemented as follows: the first buffered data volume threshold is a predetermined threshold or a threshold determined by the control base station. .

In a fourth possible implementation manner, the first possible implementation manner of the fourth aspect or the fourth possible implementation manner of the fourth aspect to the third possible implementation manner of the fourth aspect, the method further includes: The first base station sends, to the second base station, the low buffered data volume indication information, where the data volume of the cached data carrying the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE. information.

In a fifth possible implementation manner, in combination with the fourth possible implementation manner of the fourth aspect, the method further includes: receiving recovery scheduling indication information sent by the second base station; and providing uplink to the UE according to the recovery scheduling indication information Scheduling.

In a fifth aspect, a data transmission method is provided, including: comparing, by a user equipment, UE, a data volume of the cached data of the UE with a first cached data volume threshold corresponding to the cached data of the UE; If the amount of data is smaller than the first buffered data volume threshold corresponding to the buffered data of the UE, the UE sends uplink data of the BSR that carries the UE to the base station, and the UE accepts that the base station includes A shunt service for at least two base stations within.

In a first possible implementation, in combination with the fifth aspect, after the UE sends the uplink data of the BSR that carries the UE to the base station, the method further includes: if the UE determines the data volume of the cached data of the UE If the second stored data volume threshold is greater than the cached data of the UE, the UE recovers the BSR triggering mechanism, where the second cached data threshold is the first cached data threshold, or the first The second cache data amount threshold is greater than the first cache data amount threshold.

In a sixth aspect, a user equipment is provided, including: a comparing unit, configured to compare a data amount of the cached data of the user equipment with a first cached data amount threshold corresponding to the cached data of the user equipment; And if the data volume of the cached data of the user equipment is smaller than the first buffered data volume threshold corresponding to the cached data of the user equipment, sending, to the second base station, low cached data volume indication information, where the low cached data volume indication information is used. Instructing the second base station to stop providing uplink scheduling for the user equipment, where the user equipment accepts a traffic offload service of at least two base stations including the first base station and the second base station, where the first base station is used to The user equipment is provided with an uplink scheduling when the data amount of the cached data of the user equipment is less than the first cached data amount threshold corresponding to the cached data of the user equipment.

In a first possible implementation, in combination with the sixth aspect, the first base station is a control base station, or the second base station is the control base station, where the control base station is responsible for the at least two base stations. A base station that manages the mobility of the user equipment.

In a second possible implementation manner, the first possible implementation manner of the sixth aspect, further includes: a receiving unit, configured to receive the first buffered data volume threshold, the first cached data threshold The value is sent by the control base station.

In a third possible implementation manner, in combination with the first possible implementation manner of the sixth aspect or the second possible implementation manner of the sixth aspect, the specific implementation is: as the cache data used by the user equipment When the amount of data is smaller than the first buffered data amount threshold corresponding to the buffered data of the user equipment, the user equipment is provided with an uplink scheduling base station, where the first base station is a predetermined base station; or the first base station is the control base station. Determining and notifying the base station of the user equipment; or the first base station The base station selected for the user equipment.

In a fourth possible implementation manner, in combination with the sixth possible aspect, or the first possible implementation manner of the sixth aspect, to any one of the possible implementation manners of the third possible implementation manner of the sixth aspect, The sending unit is configured to directly send the low buffer data amount indication information to the second base station; or the sending unit is configured to send the low buffer data amount indication information to the second base station by using the first base station; or the sending unit And the method is configured to directly send the low buffer data amount indication information to the first base station and the second base station.

In a fifth possible implementation manner, in combination with the sixth possible aspect, or the first possible implementation manner of the sixth aspect, to any one of the possible implementation manners of the fourth possible implementation manner of the sixth aspect, The data volume of the cached data of the user equipment is the data volume of the cached data of all the first services of the user equipment; the first buffered data volume threshold is the data volume of the cached data of all the first services of the user equipment. a threshold value; the data volume of the cached data of the user equipment is smaller than the first buffered data volume threshold corresponding to the cached data of the user equipment, where: the data volume of the cached data of all the first services of the user equipment is smaller than the first The cached data volume threshold; wherein the first service is a traffic offload service, or the first service includes a traffic split service and a non-offload traffic service.

In a sixth possible implementation manner, in combination with the sixth possible aspect, the first possible implementation manner of the sixth aspect, or any one of the possible implementation manners of the fourth possible implementation manner of the sixth aspect, The data amount of the buffered data of the user equipment is the data amount of the buffered data of each first logical channel group LCG of the user equipment; the first buffered data volume threshold is a data amount threshold corresponding to the first LCG The threshold value of the first cache data corresponding to each first LCG is the same or different; the data volume of the cached data of the user equipment is smaller than the first cache data threshold corresponding to the cached data of the user equipment, including: The data volume of the cache data of the first LCG of the user equipment is smaller than the first cache data volume threshold corresponding to the LCG; wherein the first LCG is an LCG that includes a traffic offload service, or the first LCG includes a traffic split. The LCG of the service and the LCG that does not include the offload service. In a seventh possible implementation manner, combining the sixth possible aspect or the first possible implementation manner of the sixth aspect to any one of the possible implementation manners of the fourth possible implementation manner of the sixth aspect, The data volume of the cached data of the user equipment is the data volume of the buffered data of each of the user equipments; the first buffered data volume threshold is a data volume threshold corresponding to one offload service, and each The threshold value of the first cache data corresponding to the one-way service is the same or different; the data volume of the cached data of the user equipment is smaller than the first cache data threshold corresponding to the cached data of the user equipment, including: The amount of data of the cached data of each of the offloaded services is smaller than the threshold of the first cached data corresponding to the offloaded service.

In an eighth possible implementation manner, in combination with the sixth possible aspect, or the first possible implementation manner of the sixth aspect, to any one of the possible implementation manners of the seventh possible implementation manner of the sixth aspect, The low buffered data amount indication information is represented by a BSR with zero cached data; or the low cached data volume indication information is represented by a control element of the medium access control layer; or the low cached data volume indication information is used by the medium access control layer The subheader representation; or the low buffered data amount indication information is represented by physical layer indication information.

In a ninth possible implementation manner, the first possible implementation manner of the sixth aspect or the sixth aspect, to any possible implementation manner of the eighth possible implementation manner of the sixth aspect, The sending unit is further configured to send a first buffer status report BSR to the first base station; the receiving unit is further configured to receive the uplink scheduling information sent by the first base station; the sending unit is further configured to use the uplink scheduling information according to the uplink scheduling information The second base station sends the first uplink data of the user equipment.

In a tenth possible implementation manner, in combination with the ninth possible implementation manner of the sixth aspect, the user equipment is sent to the first base station after sending the first BSR to the first base station. Before the first uplink data, the uplink data is sent to the second base station, and the first uplink data carries the second BSR of the user equipment, so that the first base station learns the current BSR of the user equipment.

In an eleventh possible implementation manner, in combination with the first possible implementation manner of the sixth aspect, the comparing unit is further configured to: after the second base station stops providing uplink scheduling for the user equipment, comparing a second cache data amount threshold corresponding to the cached data of the user equipment at the moment, wherein the second cache data threshold is the first cache The data volume threshold, or the second cache data threshold is a value greater than the first cache data threshold.

In a twelfth possible implementation manner, the eleventh possible implementation manner of the sixth aspect is implemented as follows: The second buffered data volume threshold is determined by the control base station.

In a thirteenth possible implementation manner, in combination with the eleventh possible implementation manner of the sixth aspect or the twelfth possible implementation manner of the sixth aspect, the sending unit is further configured to: If the data volume of the cached data of the user equipment is less than the second cache data threshold corresponding to the buffered data of the user equipment, the uplink scheduling request information is sent to the first base station, and the uplink scheduling request information is not sent to the second base station. Or the BSR information; or the sending unit is further configured to send an uplink scheduling request to the first base station if the data amount of the cached data of the user equipment at the moment is less than a second buffered data volume threshold corresponding to the cached data of the user equipment And transmitting, to the second base station, indication information indicating that the buffered data amount is 0 or indication information indicating that the first base station transmits the cached data of the user equipment.

In a fourteenth possible implementation, the eleventh possible implementation manner of the sixth aspect, or the twelfth possible implementation manner of the sixth aspect, further includes: a recovery unit, if the user equipment If the data volume of the cached data of the user equipment is greater than the second buffered data volume threshold corresponding to the cached data of the user equipment, the BSR triggering mechanism and/or the data splitting of the user equipment by the second base station is resumed. Transmission mechanism.

In a fifteenth possible implementation, in combination with the fourteenth possible implementation manner of the sixth aspect, the recovery unit is specifically configured to: if the user equipment has the data volume of the cached data of the user equipment If the second cache data threshold is greater than or equal to the predetermined time value, the user equipment restores the BSR trigger mechanism and/or the second base station to the user equipment. Data offloading mechanism.

In a sixteenth possible implementation, in combination with the fifteenth possible implementation manner of the sixth aspect, the specific time is determined by: the predetermined time value is determined by the control base station.

In a seventeenth possible implementation, in combination with the fourteenth possible implementation of the sixth aspect, The possible implementation of the sixteenth possible implementation manner of the sixth aspect is specifically implemented as follows: the recovery unit is specifically configured to send scheduling request information to the second base station by using a sending unit, to trigger the second base station Providing an uplink scheduling for the user equipment; or the recovery unit is configured to send, by the sending unit, indication information that the data volume of the buffer data of the user equipment is greater than the threshold value of the second buffer data quantity to the first base station, so that the The base station notifies the second base station to participate in the uplink scheduling of the user equipment; or the recovery unit is specifically configured to send, by using the sending unit, information that the second base station assists scheduling to the first base station, so that the first base station notifies the first The second base station participates in the uplink scheduling of the user equipment; or the recovery unit is configured to receive the uplink scheduling recovery indication information sent by the first base station by using the receiving unit, and resume receiving the uplink scheduling of the second base station according to the uplink scheduling recovery indication information, where The uplink scheduling recovery indication information carries the second base station to resume participating in the UE. Scheduling information.

In an eighteenth possible implementation manner, in combination with the first possible implementation manner of the sixth aspect, the sending unit is configured to send BSR information to the control base station, and not to control the at least two base stations. The base station other than the base station transmits BSR information.

In a seventh aspect, a base station is provided, including: a receiving unit, configured to receive low-cache data amount indication information of the user equipment UE, where the low-buffer data volume indication information is used to indicate that the data volume of the cached data of the UE is lower than a buffered data amount threshold corresponding to the buffered data of the UE, the low buffered data amount indication information is sent by the UE or the low buffered data amount indication information is sent by the first base station; and the scheduling unit is configured to use the low buffered data volume The indication information stops providing uplink scheduling for the UE; wherein the UE accepts a traffic offload service of at least two base stations including the first base station and the base station, where the first base station is configured to use, when the amount of data of the cached data of the UE is smaller than The UE provides uplink scheduling for the UE when the first cached data threshold corresponding to the cached data of the UE.

In a first possible implementation manner, in combination with the seventh aspect, the specific implementation is: when the low buffered data volume indication information is sent by the first base station, the low buffered data volume indication information is used by the first base station to pass the first The base station and the interface of the base station are sent to the base station.

In a second possible implementation, the seventh possible implementation of the seventh aspect or the seventh aspect is combined The method further includes: a receiving unit, configured to receive recovery scheduling indication information sent by the UE or the first base station, where the recovery scheduling indication information indicates that the base station resumes providing uplink scheduling for the UE.

In an eighth aspect, a base station is provided, including: a comparing unit, configured to compare a data amount of the buffered data of the user equipment UE with a first buffered data volume threshold corresponding to the cached data of the UE; If the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the buffered data of the UE, the low-cached data volume indication information is sent to the second base station, where the low-cached data volume indication information is used to indicate the first The second base station stops providing the uplink scheduling for the UE. The UE receives the offload service of the at least two base stations including the base station and the second base station, where the base station is configured to use the data volume of the cached data of the UE is smaller than the UE. When the first cached data amount threshold corresponding to the cached data is used, the UE is provided with an uplink scheduling.

In a first possible implementation, in combination with the eighth aspect, the specific implementation is: the comparing unit is configured to compare, when receiving the BSR of the UE, a data amount of the cached data of the UE and a cached data of the UE. a buffered data amount threshold; and/or the comparing unit is configured to compare a data amount of the buffered data of the UE with a first cached data amount threshold corresponding to the cached data of the UE when the uplink scheduling is provided for the UE.

In a second possible implementation, the first possible implementation manner of the eighth aspect or the eighth aspect is specifically implemented as: the base station is a control base station, or the second base station is a control base station; wherein, the control The base station is a base station of the at least two base stations responsible for managing the mobility of the UE.

In a third possible implementation manner, the second possible implementation manner of the eighth aspect is implemented as follows: the first buffered data volume threshold is a predetermined threshold or a threshold determined by the control base station. .

In a fourth possible implementation manner, in combination with the eighth possible aspect, the first possible implementation manner of the eighth aspect, or any one of the possible implementation manners of the third possible implementation manner of the eighth aspect, The sending unit is further configured to send the first indication information to the UE, where the first indication information includes information that the second base station stops providing uplink scheduling for the UE.

In a fifth possible implementation, the eighth possible aspect or the first possible implementation of the eighth aspect The method may be implemented in any one of the fourth possible implementation manners of the eighth aspect, where the sending unit is further configured to: if the amount of data of the cached data of the UE in the UE is greater than the cache of the UE And the second base station sends the resume scheduling indication information, where the resume scheduling indication information is used to indicate that the second base station resumes providing uplink scheduling for the UE.

In a sixth possible implementation, the first possible implementation manner of the eighth aspect or the eighth possible aspect to the fifth possible implementation manner of the eighth aspect is specifically implemented as The sending unit is further configured to send the second indication information to the UE, where the second indication information includes information that the second base station resumes providing uplink scheduling for the UE.

In a seventh possible implementation manner, the first possible implementation manner of the eighth aspect or the first possible implementation manner of the eighth aspect to the sixth possible implementation manner of the eighth aspect, the method further includes: The receiving unit is configured to: if the base station is a control base station, the receiving unit receives the BSR information sent by the UE; if the base station is not the control base station, the receiving unit does not receive the BSR information sent by the UE.

According to a ninth aspect, a base station is provided, including: a comparing unit, configured to compare a data amount of the buffered data of the user equipment UE with a first buffered data volume threshold corresponding to the cached data of the UE; If the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the buffered data of the UE, the base station stops providing uplink scheduling for the UE, where the UE accepts the base station and the second base station. The offloading service of the at least two base stations, the second base station is configured to provide uplink scheduling for the UE when the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the buffered data of the UE.

In a first possible implementation, in combination with the ninth aspect, the specific implementation is: the comparing unit is configured to compare, when receiving the BSR of the UE, a data amount of the cached data of the UE and a cached data of the UE. a buffered data amount threshold; and/or the comparing unit is configured to compare a data amount of the buffered data of the UE with a first cached data amount threshold corresponding to the cached data of the UE when the uplink scheduling is provided for the UE. In a second possible implementation, the ninth aspect or the first possible implementation manner of the ninth aspect is specifically implemented as: the base station is a control base station; or the second base station is the control base station; The control base station is a base station of the at least two base stations responsible for managing the mobility of the UE.

In a third possible implementation manner, the second possible implementation manner of the ninth aspect is implemented as follows: the first buffered data volume threshold is a predetermined threshold or a threshold determined by the control base station. .

In a fourth possible implementation manner, the first possible implementation manner of the ninth aspect or the ninth aspect, and the third possible implementation manner of the ninth aspect, the method further includes: a sending unit, configured to send, to the second base station, a low buffered data volume indication information, where the data volume of the cached data carrying the UE is smaller than a first buffered data volume threshold corresponding to the cached data of the UE Information.

In a fifth possible implementation, the fourth possible implementation manner of the ninth aspect, further includes: a receiving unit, configured to receive recovery scheduling indication information sent by the second base station, and a recovery unit, configured to The recovery scheduling indication information is restored to provide uplink scheduling for the UE.

According to a tenth aspect, a user equipment is provided, including: a comparing unit, configured to compare a data amount of the cached data of the user equipment with a first cached data amount threshold corresponding to the cached data of the user equipment; If the data volume of the cached data of the user equipment is smaller than the first buffered data volume threshold corresponding to the cached data of the user equipment, the user equipment sends the uplink data of the BSR carrying the user equipment to the base station, where the user equipment accepts A shunt service of at least two base stations including the base station.

In a first possible implementation, in combination with the tenth aspect, the method further includes: a recovery unit, configured to: if the user equipment determines that the data volume of the cached data of the user equipment is not less than the second corresponding to the cached data of the user equipment The buffered data volume threshold is used by the user equipment to restore the BSR triggering mechanism, where the second buffered data volume threshold is the first cached data threshold, or the second cached data threshold is greater than the threshold. The first cached data amount threshold.

By comparing the amount of data in the UE's buffer with a predetermined threshold, the base station may The UE is served according to the amount of data in the UE cache, and can coordinate the scheduling resources allocated by the base station in the split mode to the UE, thereby improving resource utilization efficiency. DRAWINGS

 In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only some of the present invention. For the embodiments, those skilled in the art can obtain other drawings according to the drawings without any creative work.

1 is a flow chart of a method for data transmission in an embodiment of the present invention.

2a is an interactive flow chart of data transmission in an embodiment of the present invention.

FIG. 2b is an interaction flowchart of another data transmission according to an embodiment of the present invention.

FIG. 2c is an interaction flowchart of another data transmission according to an embodiment of the present invention.

3 is a flow chart of another method of data transmission in an embodiment of the present invention.

4 is a flow chart of another method of data transmission in an embodiment of the present invention.

FIG. 5a is an interaction flowchart of another data transmission according to an embodiment of the present invention.

FIG. 5b is an interaction flowchart of another data transmission according to an embodiment of the present invention.

FIG. 5c is an interaction flowchart of another data transmission according to an embodiment of the present invention.

6 is a flow chart of another method of data transmission in an embodiment of the present invention.

FIG. 7a is an interaction flowchart of another data transmission according to an embodiment of the present invention.

FIG. 7b is an interaction flowchart of another data transmission according to an embodiment of the present invention.

FIG. 7c is an interaction flowchart of another data transmission according to an embodiment of the present invention.

8 is a flow chart of another method of data transmission in an embodiment of the present invention.

FIG. 9 is a schematic block diagram of a user equipment according to an embodiment of the present invention.

Figure 10 is a schematic block diagram of a base station in accordance with an embodiment of the present invention.

FIG. 11 is a schematic block diagram of another base station according to an embodiment of the present invention.

FIG. 12 is a schematic block diagram of another base station according to an embodiment of the present invention. FIG. 13 is a schematic block diagram of another user equipment according to an embodiment of the present invention.

FIG. 14 is a schematic block diagram of another user equipment according to an embodiment of the present invention.

FIG. 15 is a schematic block diagram of another base station according to an embodiment of the present invention.

16 is a schematic block diagram of another base station according to an embodiment of the present invention.

FIG. 17 is a schematic block diagram of another base station according to an embodiment of the present invention.

FIG. 18 is a schematic block diagram of another user equipment 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 a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making creative labor are within the scope of the present invention.

A user equipment (UE, User Equipment), which may also be called a mobile terminal (Mobi le Terminal), a mobile user equipment, etc., may be performed by using a radio access network (for example, RAN, Radio Access Network) and one or more core networks. Communication, the user equipment may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a mobile device that can be portable, pocket, handheld, computer built, or in-vehicle, Exchange language and/or data with the wireless access network.

The base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE. The present invention is not limited, but for convenience of description, the following embodiments are described by taking an eNB as an example.

In the embodiment of the present invention, the UE accepts the cross-station offload service of at least two base stations. It should be noted that the cross-station offloading service may be simply referred to as a offloading service, which means that at least two base stations transmit data for one UE at the same time, and the specific form may be a radio bearer (RB) level offload, and may be a packet. The level of offloading can also be a mix of radio bearer-level offloading and packet-level offloading. The splitting of the radio bearer stage means that one service of the UE is transmitted only at one base station, and not at the same time in two or more bases. Station transmission, but multiple services can be distributed across multiple base stations for transmission. The packet-level splitting means that one service is transmitted simultaneously at the first base station and the second base station, the first base station transmits a part of the data packet, and the second base station transmits another part of the data packet, where the data packet may be a packet data convergence layer protocol (Packet). Packets in the Data Convergence Protoco l, PDCP) layer, or packets in the Radio Link Control (RLC) layer, or Media Access Control (Med ia Access)

Packets at the Contro l, MAC) layer. The mixing of the radio bearer-level offload and the packet-level offloading means that part of the service adopts the split of the radio bearer level, and the other part of the service adopts the offload of the packet level. The embodiment of the present invention takes the first base station and the second base station as an example for providing a cross-station offload service for the UE, but the method in the embodiment of the present invention is not limited to two base stations. In all the embodiments of the present invention, it is assumed that the base station has the capability of resource scheduling, whether the scheduling is implemented by the base station itself or by the base station by the upper-level network element scheduling.

1 is a flow chart of a method for data transmission in an embodiment of the present invention. The method of Figure 1 is performed by the UE. The method includes:

 1 01. The UE compares a data volume of the cached data of the UE with a first cache data threshold corresponding to the cached data of the UE.

In the present invention, the buffered data of the UE is the data to be transmitted by the UE, and the data amount of the buffered data of the UE is also the amount of data to be sent by the UE.

 If the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE, the UE sends the low buffered data volume indication information to the second base station. The low buffered data volume indication information is used to indicate that the second base station stops providing uplink scheduling to the UE. The UE receives a traffic distribution service of at least two base stations, including a first base station and a second base station, where the first base station is configured to: when the data volume of the cached data of the UE is smaller than the first cache corresponding to the cached data of the UE, The data volume threshold provides uplink scheduling for the UE.

In the embodiment of the present invention, the data volume of the cached data of the UE is compared with the first buffered data volume threshold corresponding to the cached data of the UE, and the data volume of the cached data of the UE is smaller than the cached data of the UE. The first buffered data volume threshold indicates that the second base station stops providing uplink adjustment for the UE. The degree, that is, the uplink data of the UE is no longer transmitted by the second base station, avoiding waste of base station resource scheduling, and improving resource utilization efficiency.

It should be noted that, when the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the buffered data of the UE, the base station provides uplink scheduling for the UE, and the first base station caches data of the UE. The uplink scheduling of the UE may also be provided before the amount of data is lower than the threshold value of the first buffered data.

Optionally, the first base station may be a control base station, or the second base station may be a control base station, where the control base station is a base station of the at least two base stations responsible for managing mobility of the UE. The mobility of the UE refers to the handover of the UE from one cell to another. Specifically, the base station may perform handover decision according to the measurement report reported by the UE, and the base station performs handover negotiation with the neighbor base station, acquires handover parameters, and sends a handover command to the UE. For the case of the offloading service, the mobility of the UE further includes a change of the non-control plane base station of the UE, that is, the base station that assists the control base station to perform data transmission changes from one base station to another. In addition, the control base station may also be referred to as a primary base station (Pr i mary eNB, PeNB), and the non-control base station may be referred to as a serving base station (Serve eNB, SeNB), a secondary base station, or an assisted base station.

Further, the method may further include: receiving the first buffered data amount threshold, where the first cached data threshold is sent by the control base station.

Optionally, the base station that provides uplink scheduling for the UE when the data volume of the cached data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE may include:

The first base station is a predetermined base station. When the offloading service is started, the control base station or the non-control base station may be preselected as the first base station.

Or the first base station is a base station that is determined by the control base station and notified to the UE. After the control base station determines the first base station, the information of the first base station may be notified to the UE. The control base station may be the first base station itself or a second base station.

Alternatively, the first base station is a base station selected by the UE. The UE may select a base station according to the channel quality (Channe l Qua ty I id i cator , CQ I ), the quality of service (Qua yi of Serv i ce), the QoS, and the like. Optionally, the sending, by the UE, the low buffered data volume indication information to the second base station may include: the UE directly sending the low buffered data volume indication information to the second base station; or the UE sending the low to the second base station by using the first base station Cache data amount indication information; or the UE directly sends the low buffer data amount indication information to the first base station and the second base station.

Optionally, as an embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of all the first services of the UE; the first cached data volume threshold is all the first services of the UE. The data volume threshold of the cached data; the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE, and the data volume of the cached data of all the first services of the UE is smaller than The first cache data amount threshold. The first service is a traffic distribution service, or the first service includes a traffic distribution service and a non-offload service.

Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of each first logical channel group LCG of the UE; the first cached data volume threshold is a threshold value of the data volume corresponding to the first LCG, the threshold value of the first cache data corresponding to each first LCG is the same or different; the data volume of the cached data of the UE is smaller than the first corresponding to the cached data of the UE The buffered data volume threshold may include: the data amount of the cache data of each first LCG of the UE is smaller than the first cache data volume threshold corresponding to the LCG. The first LCG is an LCG that includes a traffic distribution service, or the first LCG includes an LCG that includes a traffic distribution service and an LCG that does not include a traffic distribution service.

Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the buffered data of each of the offloaded services of the UE; the first cached data volume threshold is corresponding to each of the traffic offload services. The threshold value of the data volume, the threshold value of the first cache data corresponding to each of the split services is the same or different; the data volume of the cached data of the UE is smaller than the first cache data threshold corresponding to the cached data of the UE. The data volume of the buffered data of each of the offloaded services of the UE is smaller than the first cached data volume threshold corresponding to the offloaded service.

Optionally, the low cache data amount indication information may be represented by a BSR whose cache data is zero. Alternatively, the low buffered data amount indication information may be represented by a control element of the medium access control layer. Or, the low The stored data indication information may be represented by a subheader of the medium access control layer. Alternatively, the low buffered data amount indication information may be represented by physical layer indication information.

Optionally, the method may further include: the UE sending a first buffer status report BSR to the first base station; the UE receiving uplink scheduling information sent by the first base station; and sending, by the UE, the first base station according to the uplink scheduling information. The first uplink data of the UE. The first uplink data may include cache data of the current time of the UE.

Further, if the UE sends uplink data to the second base station after transmitting the first uplink data to the first base station, the first uplink data carrying The second BSR of the UE, so that the first base station learns the current BSR of the UE. The second BSR of the UE is used to indicate the amount of cached data before the UE sends the first uplink data to the first base station.

Optionally, the method may further include: after the second base station stops providing the uplink scheduling for the UE, comparing a data volume of the cached data of the UE at the moment with a second buffered data volume threshold corresponding to the cached data of the UE. The second buffered data amount threshold is the first cached data amount threshold, or the second cached data threshold is greater than the first cached data threshold.

Further, the second buffered data amount threshold is determined by the control base station.

Further, as an embodiment, if the data amount of the buffered data of the UE at this moment is smaller than the second buffered data volume threshold corresponding to the buffered data of the UE, the uplink scheduling request information is sent to the first base station, and the The second base station sends uplink scheduling request information or BSR information.

Or, further, as another embodiment, if the data amount of the buffered data of the UE at the moment is smaller than the second buffered data volume threshold corresponding to the buffered data of the UE, sending the uplink scheduling request information to the first base station, And transmitting, to the second base station, indication information indicating that the buffered data amount is 0, or sending, to the second base station, indication information indicating that the cached data of the UE is transmitted by the first base station. Or, further, as another embodiment, if the amount of data of the buffered data of the UE is greater than the second buffered data volume threshold corresponding to the cached data of the UE, the UE resumes the BSR triggering mechanism. And/or the data split transmission mechanism of the second base station to the UE. In the present invention, the BSR triggering mechanism may have multiple presentation modes. In one mode, the BSR can be triggered according to the timer period. Alternatively, the BSR can be triggered based on an event, such as when a high priority service data is available from scratch. The other way is to fill in the spare bits, for example, padd i ng BSRo. Of course, there may be other ways of triggering the BSR, which will not be described here. The BSR trigger mechanism mentioned below is similar to this and will not be described again. After the UE resumes the BSR triggering mechanism, the UE may choose to send only the BSR to the control base station, or send the identical BSR to the control base station or the cooperative base station respectively, or send a completely different BSR to the control base station or the cooperative base station respectively, or For any data, the UE can only report the BSR to the controlling base station or the cooperative base station side. The cooperative base station is a base station other than the base station that controls the base station that provides the offloading service for the UE.

Further, as another embodiment, if the amount of data of the buffered data of the UE is greater than the second cached data amount threshold corresponding to the cached data of the UE, and the duration is greater than or equal to a predetermined time. The value is, the UE recovers the BSR triggering mechanism of the UE and/or the data offload transmission mechanism of the second base station to the UE.

Further, the predetermined time value is determined by the control base station.

Further, as an embodiment, the UE recovering the BSR triggering mechanism of the UE and/or the data offloading transmission mechanism of the second base station to the UE may include: sending, by the UE, scheduling request information to the second base station, to trigger the The second base station provides uplink scheduling for the UE.

Or, further, as another embodiment, the UE recovering the BSR triggering mechanism of the UE and/or the data offloading transmission mechanism of the second base station to the UE may include: the UE sending the cached data of the UE to the first base station The amount of data is greater than the indication information of the second buffered data volume threshold, so that the first base station notifies the second base station to participate in uplink scheduling of the UE.

Or, further, as another embodiment, the UE recovering the BSR triggering mechanism of the UE and/or the data offloading transmission mechanism of the second base station to the UE may include: sending, by the UE, the second base station to the first base station The scheduling information is assisted, so that the first base station notifies the second base station to participate in uplink scheduling of the UE.

Optionally, as an embodiment, the BSR information sent by the UE is sent only to the control base station, and Transmitting to a base station other than the base station among the at least two base stations.

2a is an interactive flow chart of data transmission in an embodiment of the present invention. One embodiment of the present invention, as shown in Figure 2a, includes:

 201 a. The UE accepts the offloading service provided by the first base station and the second base station.

In the embodiment of the present invention, the first base station and the second base station provide a data offload service for the UE, and receive uplink data of the UE. Specifically, the first base station is a base station for transmitting buffered data that is lower than the first buffered data volume threshold, or the first base station is configured to: when the data volume of the cached data of the UE is smaller than the first cached data threshold The value provides uplink scheduling for the UE.

Optionally, the first base station is a base station responsible for managing the mobility of the UE, in other words, the first base station is a control base station. In this case, the first base station may be a macro base station, and the second base station may be a neighboring macro base station of the first base station or a micro base station of the first base station.

Alternatively, optionally, the second base station is a base station responsible for managing the mobility of the UE, that is, the second base station is a control base station. In this case, the second base station may be a macro base station, and the first base station may be a neighboring macro base station of the second base station or a micro base station (small cell) of the first base station.

Regardless of whether the first base station is the control base station or the second base station is the control base station, the UE accepts the first buffered data amount threshold value that the control base station configures for the UE.

In the embodiment of the present invention, the threshold value of the first cached data is a threshold value set for the UE as a whole, and is a threshold value of the cached data for all the first services of the UE. Optionally, the first service may be a traffic offloading service, where the first cached data volume threshold is used for the cached data of all the offloaded services of the UE. Alternatively, the first service may include the offload service and the non-offload service. The first cache data threshold is used for the cache data of all services of the UE. Alternatively, optionally, the first service may include signaling radio bearer (SRB) data, or may not include SRB data. When the control base station configures the first buffered data volume threshold for the UE, it may be configured according to the threshold value specified by the protocol, configured according to the data splitting policy of the operator, or determined according to factors such as channel quality, and specifically determined, the present invention There are no restrictions here.

Optionally, the number of caches of the UE used for transmitting the data amount lower than the first cache data amount threshold According to the base station, the first base station is a predetermined base station, or a base station determined by the control base station, or a base station selected by the UE. The predetermined base station may be predetermined as a macro base station or may be determined as a micro base station in advance. The base station determined by the control base station may be a base station that controls the base station to specify when configuring the offload transmission, or a base station determined according to factors such as channel conditions, network load, and the like. The base station selected by the UE may be a base station selected by the UE according to CQ I, QoS sharing, and satisfaction.

 202a. The UE compares the data volume of the cached data of all the first services of the UE with the first cached data volume threshold.

If the UE determines that the data volume of the cache data of all the first services of the UE is greater than the threshold value of the first cache data, the method is performed by referring to the original offloading method, and the details are not described herein. If the UE determines that the data amount of all the cached data of the UE is less than the first buffered data amount threshold, step 203a is performed. For the cached data of the UE whose buffer data amount is equal to the corresponding first cache data volume threshold, an optional solution may be considered as being processed greater than the corresponding first cache data volume threshold; The selected scheme can be regarded as being processed less than the corresponding first buffered data amount threshold.

203a. Send low buffer data amount indication information to the second base station.

The low buffered data volume indication information may indicate that the data volume of all cached data of the UE is lower than the first buffered data volume threshold of all cached data of the UE, so that the second base station stops resource scheduling corresponding to the cached data of the UE.

There are many ways for the UE to send low buffered data amount indication information. For example, in the first manner, the UE directly sends the low buffered data amount indication information to the first base station. In the second manner, the UE directly sends the low buffered data amount indication information to the first base station and the second base station. In a third mode, the UE directly sends the low buffer data amount indication information to the second base station, and sends the low buffer data amount indication information to the first base station by using the second base station. For the second base station, the UE may directly send the low buffer data amount indication information to the second base station, or may forward the low buffer data amount indication information to the second base station by using the first base station. Optionally, when the UE forwards the low-cache data amount indication information to the second base station by using the first base station, the interface between the first base station and the second base station may be used, which may be an X2 interface, which may be an S1 interface. It can also be other newly defined interfaces, etc.) Send the low buffered data amount indication information.

In the embodiment of the present invention, the low buffer data amount indication information may have multiple representation manners. For example, send a BSR with a cached data of 0, or define a new Media Access Control (MAC) control element (Control Element, CE), and specify a new Radio Network Temporary Identity (RNTI) identifier. The UE is currently in a state of low buffered data volume, or uses the reserved R bit in the sub-header of the R/R/E/LCID message to indicate that the UE is currently in a state of low buffered data amount, or utilizes physical A new definition or redefinition or reserved bit or the like in the PDCCH channel of the layer indicates a state in which the amount of data is currently low, and the like. Alternatively, the happy base bit is directly used to instruct the second base station to stop the new uplink scheduling.

204a. The UE may send the first BSR to the first base station, so that the first base station performs uplink scheduling.

It should be noted that the order of execution of the step 203a and the step 204a is not limited. For example, the step 203a may be performed before step 204a, after step 204a, or simultaneously with step 204a.

 205a. The UE receives uplink scheduling information of the first base station.

206. The UE sends the first uplink data to the first base station according to the uplink scheduling information, where the uplink data includes the cached data of the current time of the UE.

Optionally, between the first time corresponding to step 204a and the second time corresponding to step 206a, if the UE once transmits uplink data to the second base station, when the UE sends the first uplink data to the first base station, The first uplink data carries the second BSR. The second BSR is a BSR before the UE sends data at the second moment. After receiving the second BSR, the first base station may send uplink scheduling information to the UE according to the second BSR, and provide uplink scheduling for the UE.

 207a. The UE compares a data volume of the cache data of all the first services of the UE with a second buffer data volume threshold corresponding to the cache data of all the first services of the UE.

The second buffered data volume threshold may be a first buffered data amount threshold, or may be a value greater than the first cached data threshold. Similar to the first cache data amount threshold, the second buffer data amount threshold is configured by the control base station. By default, if the control base station is not configured with the second The buffered data volume threshold may be considered to be determined by using the first cached data amount threshold. In other words, if the control base station does not configure the second cached data threshold, the second cached data threshold is equal to The first cached data amount threshold.

If the data volume of the cached data of all the first services of the UE is smaller than the second cache data volume threshold corresponding to the cache data of all the first services of the UE, step 205a is performed. At the same time, the UE may choose to send a message to the second base station, or may choose not to send a message to the second base station. If the UE chooses to send a message to the second base station, the UE may send a padd i ng BSR indicating that the buffered data is 0 to the second base station, or define a new MAC CE, indicating that the remaining data is transmitted by the first base station.

If the data volume of the cached data of all the first services of the UE is greater than the second cache data volume threshold corresponding to the cached data of all the first services of the UE, step 208a is performed.

For the cached data of the UE whose buffer data amount is equal to the corresponding second cache data volume threshold, an optional solution may be considered as being processed greater than the corresponding second cache data volume threshold; The selected scheme can be regarded as being processed less than the corresponding second cache data amount threshold.

Further, in step 207a, a timer may be added for monitoring the duration of the data volume of the cache data of all the first services of the UE being greater than the threshold value of the second buffer data volume. If the data amount of all the currently cached data of the UE is greater than the second buffered data amount threshold for a duration greater than or equal to the predetermined time value, step 208a is performed, otherwise step 205a is performed. If step 205a is performed, the UE may choose to send a message to the second base station, or may choose not to send a message to the second base station. The predetermined time value may be a time value determined by the base station according to factors such as an operator policy or a network environment condition. The specific determining method is not limited herein. When the timer monitors the duration, for an cached data of the UE whose buffer data amount is equal to the corresponding second cache data volume threshold, an optional solution may be considered to be greater than the corresponding second cache data volume threshold. Case processing; Another alternative solution can be considered as less than the case of the corresponding second cache data amount threshold. By increasing the monitoring of time values, the effects of transient traffic fluctuations caused by data bursts can be avoided.

Step 207a may be performed periodically or triggered according to certain events. 208a. Resume the BSR triggering mechanism and/or the data offload transmission mechanism of the second base station to the UE.

Optionally, the UE may send scheduling request information to the second base station to trigger the second base station to provide uplink scheduling for the UE. For example, the UE sends an SR request to the second base station to schedule the second base station, and carries the current BSR to the second base station in the subsequent uplink resource.

Alternatively, the UE sends the indication information to the first base station, so that the first base station notifies the second base station to participate in the uplink scheduling of the UE according to the indication information. The indication information indicates that the cached data of the UE is greater than the second cached data amount threshold. For example, the UE notifies the BSR of the UE to the second base station through the interface of the first base station and the second base station by the first base station that is communicating.

Alternatively, the UE sends information requesting the second base station to assist scheduling to the first base station, so that the first base station notifies the second base station to participate in the uplink scheduling of the UE.

Of course, there may be other ways to wake up the second base station, and the present invention is not limited herein.

It should be noted that the recovery BSR triggering mechanism has multiple meanings. The first type refers to the trigger mechanism for reporting the BSR reported by the second base station for suspending data transmission and the reporting mechanism thereof, and the second refers to restoring the UE in the configuration. The BSR trigger mechanism and the reporting mechanism for the first base station and the second base station when the traffic is offloaded, the trigger mechanism of the BSR and the reporting mechanism thereof may be various. For example, the UE sends the BSR report only to the control base station, and the UE separately The first base station and the second base station send a BSR of the same content, and the UE sends a BSR and the like corresponding to the different data to the first base station and the second base station, and the present invention is not limited herein.

Optionally, in the embodiment of the present invention, the UE may point to the control base station to send the BSR information. After receiving the BSR information, the control base station may select to forward the BSR information to other base stations that provide the offload transmission service for the UE, or send the indication information generated by the control base station according to the BSR information to other base stations that provide the offload transmission service for the UE. 2b is an interactive flow chart of data transmission in an embodiment of the present invention. One embodiment of the present invention, as shown in Figure 2b, includes:

 201 b. The UE accepts the offloading service provided by the first base station and the second base station.

In the embodiment of the present invention, the first base station and the second base station provide a data offload service for the UE, and receive uplink data of the UE. In particular, the first base station is configured to transmit a threshold lower than the threshold value of the first cached data. The base station storing the data, or the first base station, is configured to provide uplink scheduling for the UE when the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the buffered data of the UE.

Optionally, the first base station is a base station responsible for managing the mobility of the UE, in other words, the first base station is a control base station. At this time, the first base station may be a macro base station, and the second base station may be a neighboring macro base station of the first base station or a micro base station (small cell) of the first base station.

Alternatively, optionally, the second base station is a base station responsible for managing the mobility of the UE, that is, the second base station is a control base station. In this case, the second base station may be a macro base station, and the first base station may be a neighboring macro base station of the second base station or a micro base station (small cell) of the first base station.

Regardless of whether the first base station is the control base station or the second base station is the control base station, the UE accepts the first buffered data amount threshold value that the control base station configures for the UE.

In the embodiment of the present invention, the first buffered data amount threshold is a threshold value for the amount of cached data of each of the first LCGs in the UE. Optionally, the first LCG refers to an LCG that includes a traffic splitting service, that is, the first cached data volume threshold is only for the LCG that includes the offloaded service in the UE, and is not for the LCG that does not include the offloaded service, or, optionally, the first The LCG may include an LCG including a traffic offload service and an LCG that does not include a traffic offload service, that is, the first cached data volume threshold is for all LCGs in the UE. When the control base station configures the first buffered data volume threshold for the first LCG of the UE, a corresponding first cached data volume threshold may be separately configured for each first LCG, or a unified one may be configured for all the first LCGs. The first cached data amount threshold. In other words, the threshold value of the first cache data corresponding to the cache data of all the first LCGs in the UE may be the same or different.

The cached data of the first LCG for which the first cached data volume threshold is directed, regardless of whether the cached data in the first LCG is the cached data of the offloaded service or the cached data of the non-offloaded service, comprehensively considers the entire LCG, the entire The LCG's cached data is compared as a whole to its corresponding first cached data volume threshold. The cache data of the first LCG corresponding to the first cache data threshold may include SRB data or may not include SRB data. The first cache data amount threshold of each first LCG may be the same or different. For example, suppose that the UE has three LCGs, a, b, and c, respectively, and the corresponding LCG cache data thresholds are a1, b1, and c1, respectively. Cache data threshold The values a1, b1, and c1 may be equal or unequal.

Optionally, as a base station for transmitting buffer data of a UE whose data volume is lower than the threshold value of the first buffer data, the first base station is a predetermined base station, or is a base station determined by the control base station, or is selected by the UE. Base station. The predetermined base station may be predetermined as a macro base station or determined in advance as a micro base station. The base station determined by the control base station may be a base station that controls the base station to specify when configuring the offload transmission, or a base station determined according to factors such as channel conditions, network load, and the like. The base station selected by the UE may be a base station selected by the UE according to CQ I, QoS sharing, and satisfaction.

202b. The UE compares the data volume of the buffer data of each first LCG in the UE with the first buffer data volume threshold corresponding to the first LCG.

When the UE compares the data amount of the buffer data of the first LCG with the first buffer data volume threshold corresponding to the cache data of the first LCG, the UE needs to compare the data amount of the cache data of each first LCG of the UE with the first corresponding data. The relationship between cached data volume thresholds. For the first LCG whose buffer data amount is equal to the corresponding first buffer data volume threshold, an optional scheme may be regarded as the first LCG processing that is greater than the corresponding first buffer data volume threshold; Alternatively, the first LCG processing may be regarded as less than the corresponding first buffered data amount threshold, and the following is related to the judgment of the buffered data amount threshold. At this time, the result of the UE comparison can be divided into three cases: In the first case, the data amount of the cache data of each of the first LCGs in the UE is smaller than the corresponding first cache data amount threshold. In the second case, the data amount of the buffer data of each of the first LCGs in the UE is greater than the corresponding first buffer data amount threshold. In the third case, the data amount of the buffered data of the partial LCG in the UE is smaller than the corresponding first cached data amount threshold. For the first case and the third case, step 203b is performed; for the second case, the original shunt method is performed, and the present invention is not described herein again.

203b. Send low cache data amount indication information to the second base station. The low buffered data volume indication information indicates that the data volume of the cached data of the at least one LCG of the UE is lower than the first cached data volume threshold corresponding to the at least one LCG.

If it belongs to the first case, the low buffered data volume indication information indicates that the data volume of the buffer data of all the LCGs of the UE is lower than the first buffered data volume threshold corresponding to the LCG, and the second base station can stop. The uplink scheduling is provided for the UE.

If it belongs to the third case, the low buffered data volume indication information indicates that the data volume of the buffered data of the partial LCG of the UE is lower than the first buffered data volume threshold corresponding to the LCG. At this time, since there are still some LCGs in the UE. It needs to be transmitted to the second base station, so the second base station also needs to provide uplink scheduling for the UE. After receiving the uplink scheduling information of the second base station, the UE may transmit the uplink data to the second base station according to the priority of the UE. The method for transmitting is similar to the original method, and the description is not repeated herein. In the embodiment of the present invention, the low-cache data indicating information does not need to explicitly indicate whether the data volume of the buffer data of part or all of the LCGs is lower than the corresponding first buffer data quantity threshold, and the second base station only needs to know part or all. The amount of data of the LCG cache data is lower than the corresponding first cache data amount threshold.

Optionally, if the buffered data volume of each LCG of the UE is smaller than the first cached data volume threshold of the corresponding LCG (the first case), the low cached data volume indication information may only include the cached data state is low. An indication of the first cached data amount threshold. Alternatively, if the amount of buffered data of only part of the LCG in the UE is less than the first buffered data amount threshold of the corresponding LCG (the third case), the low cached data amount indication information includes the cached data amount is less than the corresponding one. LCG information of the LCG's first cached data volume threshold. For example, suppose that the UE has three LCGs, a, b, and c, respectively, and the corresponding LCG cache data thresholds are a1, b1, and c1, respectively, if the buffered data amounts of a, b, and c are respectively smaller than their corresponding The first buffered data amount thresholds a1, b1, and c1 of the LCG, the low buffered data amount indication information may only include an indication that the cached data state is lower than the first cached data amount threshold; if only a and b are The buffered data amount is smaller than the first cached data amount thresholds a1 and b1 of the corresponding LCG, and the low cached data amount indication information includes a and a cached data amount smaller than the first cached data amount threshold of the corresponding LCG. b information.

The manner in which the UE sends the low-cache data amount indication information is similar to the manner in which the UE sends the low-cache data amount indication information in step 203a, and the present invention will not be described herein.

In the embodiment of the present invention, the low cache data amount indication information may also have multiple representation manners. For example, the BSR that sends the buffered data is 0, and the BSR indicates that the UE is lower than the corresponding first cached data threshold. The amount of cached data of the LCG, which may contain information of multiple LCGs. Or, a new MAC CE is defined, and the new RNT I identifies a buffer status of the LCG that is lower than the corresponding first buffered data volume threshold, and the MAC CE may include information of multiple LCGs.

 204b. The UE may send the first BSR to the first base station, so that the first base station performs resource scheduling.

It should be noted that the order of execution of the step 203b and the step 204b is not limited. For example, the step 203b may be performed before the step 204b, after the step 204b, or simultaneously with the step 204b.

In this embodiment of the present invention, the first BSR may include the cache data amount of all LCGs in the LCG of the UE that are lower than the corresponding first cache data amount threshold.

205b. The UE receives uplink scheduling information of the first base station.

In the embodiment of the present invention, the uplink scheduling information is uplink scheduling information of all LCGs in the LCG of the UE that are lower than the corresponding first buffered data volume threshold.

 206b. The UE sends the first uplink data to the first base station according to the uplink scheduling information, where the uplink data may include the cache data of the current time of the UE.

Optionally, between the first time corresponding to step 204b and the second time corresponding to step 206b, if the UE once transmits uplink data to the second base station, when the UE sends the first uplink data to the first base station, The first uplink data carries the second BSR. The second BSR is a BSR before the UE sends data at the second moment. After receiving the second BSR, the first base station may send uplink scheduling information to the UE according to the second BSR, and provide uplink scheduling for the UE.

207b. The UE compares the data volume of the cache data of each first LCG currently used by the UE to the second cache data volume threshold corresponding to the cache data of the first LCG.

The second buffered data volume threshold may be a first buffered data amount threshold, or may be a value greater than the first cached data threshold. Similar to the first cache data amount threshold, the second buffer data amount threshold is configured by the control base station. By default, if the control base station does not configure the second cache data threshold, it can be considered that the first cache data threshold is used for determining. In other words, the second cache data threshold is equal to the first cache data. The threshold value. With the first cached data volume The threshold value is similar, and the threshold value of the second cache data corresponding to the cache data of each first LCG may be the same or different.

For the first LCG whose buffer data amount is equal to the corresponding second buffer data volume threshold, an optional scheme may be regarded as the first LCG processing that is greater than the corresponding second buffer data volume threshold; The optional solution may be regarded as the first LCG process that is smaller than the corresponding second cache data amount threshold.

If the data volume of each of the first LCG cache data of the UE is less than the second buffer data threshold corresponding to the first LCG, step 205b is performed. Similar to step 207a, the UE may choose to send a message to the second base station, or may choose not to send a message to the second base station. If the UE chooses to send a message to the second base station, the UE may send a padd i ng BSR indicating that the buffered data is 0 to the second base station, or define a new MAC CE, indicating that the remaining data is transmitted by the first base station.

If the buffer data amount of some or all of the first LCGs in the UE is greater than the second buffer data volume threshold corresponding to the first LCG, then 208b is performed.

Further, in step 207b, a timer may be added to monitor the duration of the current first LCG cache data of the UE is greater than the duration of the second cache data threshold corresponding to the cache data of the first LCG. If the amount of data of the buffered data of the first LCG of the UE is greater than the second buffered data amount threshold corresponding to the cached data of the first LCG of the UE, and the duration is greater than or equal to a predetermined time value, Then step 208b is performed, otherwise step 205b is performed. If the step 205b is performed (ie, if the data amount of the cache data of the first LCG of the UE does not exist in the UE is greater than the second cache data amount threshold corresponding to the cache data of the UE, or the duration is less than the predetermined time value) The UE may choose to send a message to the second base station, or may choose not to send a message to the second base station. The predetermined time value may be a time value determined by the base station according to factors such as an operator policy or a network environment condition. The specific determining method is not limited herein. When the timer monitors the duration, for each cache data of the first LCG whose cache data amount is equal to the corresponding second cache data volume threshold, an optional scheme may be regarded as greater than the corresponding second cache data amount. Handling of the threshold value; Another alternative solution can be considered as less than the case of the corresponding second buffered data amount threshold. By increasing the monitoring of time values, it can be avoided due to data emergencies. The impact of instantaneous flow fluctuations.

Step 207b may be performed periodically or triggered according to a certain event.

208b, recovering the BSR trigger mechanism and/or the second base station to the UE data offload transmission mechanism

Optionally, the UE may send scheduling request information to the second base station to trigger the second base station to provide uplink scheduling for the UE. For example, the UE sends an SR request to the second base station to schedule the second base station, and carries the current BSR to the second base station in the subsequent uplink resource.

Alternatively, the UE sends the indication information to the first base station, so that the first base station notifies the second base station to participate in the uplink scheduling of the UE according to the indication information. The indication information indicates that the cached data of the UE is greater than the second cached data amount threshold. For example, the UE notifies the BSR of the UE to the second base station through the interface of the first base station and the second base station by the first base station that is communicating.

Alternatively, the UE sends information requesting the second base station to assist scheduling to the first base station, so that the first base station notifies the second base station to participate in the uplink scheduling of the UE.

Alternatively, the UE reports the indication information that needs assistance to the control base station, and the control base station wakes up the second base station according to the indication information, and notifies the second base station to provide uplink scheduling for the UE.

Of course, there may be other ways to wake up the second base station, and the present invention is not limited herein.

Optionally, in the embodiment of the present invention, the UE may point to the control base station to send the BSR information. After receiving the BSR information, the control base station may select to forward the BSR information to other base stations that provide the offload transmission service for the UE, or send the indication information generated by the control base station according to the BSR information to other base stations that provide the offload transmission service for the UE.

2c is a flow chart of interaction of data transmission in an embodiment of the present invention. An embodiment of the present invention, as shown in Figure 2c, includes:

 201c. The UE accepts the offloading service provided by the first base station and the second base station.

In the embodiment of the present invention, the first base station and the second base station provide a data offload service for the UE, and receive uplink data of the UE. In particular, the first base station is a base station for transmitting buffered data of a traffic splitting service whose buffered data amount is lower than a corresponding first cached data amount threshold, or the first base station is configured to use the data amount of the cached data of the UE. The UE is smaller than the first buffered data amount threshold corresponding to the buffered data of the UE. Provide uplink scheduling.

Optionally, the first base station is a base station responsible for managing the mobility of the UE, in other words, the first base station is a control base station. At this time, the first base station may be a macro base station, and the second base station may be a neighboring macro base station of the first base station or a micro base station (small cell) of the first base station.

Alternatively, optionally, the second base station is a base station responsible for managing the mobility of the UE, that is, the second base station is a control base station. In this case, the second base station may be a macro base station, and the first base station may be a neighboring macro base station of the second base station or a micro base station (small cell) of the first base station.

Regardless of whether the first base station is the control base station or the second base station is the control base station, the UE accepts the first buffered data amount threshold value that the control base station configures for the UE.

In the embodiment of the present invention, the first buffered data amount threshold is a threshold value for the amount of cached data for each of the offloaded services in the UE. Optionally, when the control base station configures the first buffered data volume threshold for the offloading service of the UE, a corresponding first cached data volume threshold may be separately configured for each of the traffic offload services, or all the split traffic services that need to be configured may be configured. Configure a uniform first cache data threshold. In other words, the first cache data amount threshold corresponding to each of the offload services in the UE may be the same or different.

Optionally, as a base station for transmitting buffer data of a UE whose data volume is lower than the threshold value of the first buffer data, the first base station is a predetermined base station, or is a base station determined by the control base station, or is a UE according to the base station. Base station for channel quality selection. The predetermined base station may be predetermined as a macro base station or may be predetermined as a micro base station. The base station determined by the control base station may be a base station that controls the base station to specify when configuring the offload transmission, or a base station determined according to factors such as channel conditions, network load, and the like.

The base station selected by the UE may be a base station selected by the UE according to CQ I, QoS sharing, and satisfaction.

202c. The UE compares the data volume of the buffered data of each of the offloaded services in the UE and the first buffered data volume threshold of the corresponding offloaded service.

When the UE compares the data volume of the buffered data of the offloaded service with the first cached data volume threshold corresponding to the cached data of the offloaded service, the UE needs to compare the data amount of the cached data of each of the offloaded services of the UE with the corresponding amount of the first cached data. The relationship of threshold values. For the amount of cached data is equal to the corresponding first slow A traffic splitting service that stores a data threshold, an optional solution, which can be regarded as a traffic splitting service that is greater than a corresponding threshold value of the first cached data; another optional solution, which can be regarded as smaller than the corresponding The shunt service processing of the first buffered data amount threshold, the following judgment involving the buffered data amount threshold, is similar. At this time, the result of the UE comparison can be divided into three cases: In the first case, the data amount of the buffered data of each of the offloaded services in the UE is smaller than the corresponding first cached data amount threshold. In the second case, the data volume of the buffered data of each of the offloaded services in the UE is greater than the corresponding first cached data volume threshold. In the third case, the data volume of the buffered data of the partial offload service in the UE is smaller than the corresponding first cached data volume threshold. For the first case and the third case, step 203c is performed; for the second case, the original shunt method is performed, and the present invention is not described herein again. 203c. Send low cache data amount indication information to the second base station. The low buffered data volume indication information indicates that the data volume of the cached data of the at least one offloading service of the UE is lower than the first cached data volume threshold corresponding to the at least one traffic offloading service.

If it belongs to the first case, the low buffered data volume indication information indicates that the data volume of the buffered data of all the offloaded services of the UE is lower than the first cached data volume threshold corresponding to the offloaded service, and the second base station stops. Provide uplink scheduling for the UE.

If it belongs to the third case, the low buffered data volume indication information indicates that the data volume of the buffered data of the partial offloading service of the UE is lower than the first buffered data volume threshold corresponding to the traffic offloading service. At this time, since some of the offloaded services in the UE need to be transmitted to the second base station, the second base station also needs to provide uplink scheduling for the UE. After receiving the uplink scheduling information of the second base station, the UE may transmit the uplink data to the second base station according to the priority of the UE. The method for transmitting is similar to the original method, and the present invention will not be repeated herein.

Or, the UE does not distinguish the above two cases in detail, and only needs to indicate that the data volume of the cached data of the at least one offload service of the UE is lower than the first cached data volume threshold corresponding to the at least one offload service, where N may be 1, 2, 3~, N is the default value or configured by the control base station.

In the embodiment of the present invention, the manner in which the UE sends the low-cache data amount indication information is similar to the manner in which the UE sends the low-cache data amount indication information in step 203a, and the low-cache data amount indicates the manner in which the information is expressed. Similar to the manner in which the low-cache data amount indication information is displayed in step 203b, the present invention will not be described herein.

 204c. The UE may send the first BSR to the first base station, so that the first base station performs resource scheduling. It should be noted that the order of execution of the step 203c and the step 204c is not limited. For example, the step 203c may be performed before step 204c, after step 204c, or simultaneously with step 204c.

In the embodiment of the present invention, the first BSR may include a buffered data volume of all the offloaded services in the offloaded service of the UE that is lower than the corresponding first cached data volume threshold.

205c. The UE receives uplink scheduling information of the first base station.

In the embodiment of the present invention, the uplink scheduling information is uplink scheduling information of all the offload services that are lower than the corresponding first buffered data volume threshold in the offloading service of the UE.

 The UE sends the first uplink data to the first base station according to the uplink scheduling information, where the uplink data may include the cache data of the current time of the UE.

Optionally, between the first time corresponding to step 204c and the second time corresponding to step 206c, if the UE once transmits uplink data to the second base station, when the UE sends the first uplink data to the first base station, The first uplink data carries the second BSR. The second BSR is a BSR before the UE sends data at the second moment. After receiving the second BSR, the first base station may send uplink scheduling information to the UE according to the second BSR, and provide uplink scheduling for the UE.

 207c: The UE compares the data volume of the buffer data of each current offload service of the UE to the second cache data volume threshold corresponding to the cached data of the offload service.

The second buffered data volume threshold may be a first buffered data amount threshold, or may be a value greater than the first cached data threshold. Similar to the first buffered data volume threshold, the second cached data threshold is configured by the control base station, and similar to the first cached data threshold, the second cached data gate corresponding to the cached data of each offloaded service The limits can be the same and can vary. By default, if the control base station does not configure the second cache data threshold, it can be considered that the first cache data threshold is used for judgment. In other words, the second cache data threshold is equal to the first buffer. Store data thresholds.

For the offloading service with the buffered data amount being equal to the corresponding second buffered data volume threshold, an optional solution may be regarded as the offloading service processing that is greater than the corresponding second cached data volume threshold; The scheme can be regarded as a traffic offloading service that is smaller than the corresponding threshold value of the second cached data.

If the data volume of each of the current split service cache data of the UE is smaller than the second cache data volume threshold corresponding to the split service, step 205c is performed. Similar to step 207a, the UE may choose to send a message to the second base station, or may choose not to send a message to the second base station. If the UE chooses to send a message to the second base station, the UE may send a padd i ng BSR indicating that the buffered data is 0 to the second base station, or define a new MAC CE, indicating that the remaining data is transmitted by the first base station.

If the amount of cached data of the part or all of the traffic in the UE is greater than the second buffered data threshold corresponding to the offloaded service, step 208c is performed.

Further, in step 207c, a timer may be added to monitor the duration of the data of the current offloaded service cache data of the UE being greater than the threshold of the second cached data volume corresponding to the offloaded service. If the data volume of the cached data of the offloaded service is greater than the second cached data volume threshold corresponding to the cached data of the offloaded service, and the duration is greater than the predetermined time value, step 208c is performed, otherwise step 205c is performed. . If step 205c is performed, the UE may choose to send a message to the second base station, or may choose not to send a message to the second base station. The predetermined time value may be a time value determined by the base station according to factors such as an operator policy or a network environment condition. The specific determining method is not limited herein. When the timer monitors the duration, for the traffic splitting service whose buffer data amount is equal to the corresponding second cache data volume threshold, an optional solution may be regarded as a traffic splitting service that is greater than the corresponding second cache data volume threshold. Processing; another optional solution, which can be regarded as a traffic offload processing that is smaller than a corresponding second cache data amount threshold. By increasing the monitoring of time values, the effects of transient traffic fluctuations caused by data emergencies can be avoided.

Step 207c may be performed periodically or triggered according to a certain event.

208c, recovering the BSR triggering mechanism and/or the second base station to the UE data offload transmission mechanism

Optionally, the UE may send scheduling request information to the second base station, to trigger the second base station to provide the UE Line scheduling. For example, the UE sends an SR request to the second base station to request the scheduling of the second base station, and carries the current BSR to the second base station in the subsequent uplink resource.

Alternatively, the UE sends the indication information to the first base station, so that the first base station notifies the second base station to participate in the uplink scheduling of the UE according to the indication information. The indication information indicates that the cached data of the UE is greater than the second cached data amount threshold. For example, the UE notifies the BSR of the UE to the second base station through the interface of the first base station and the second base station by the first base station that is communicating.

Alternatively, the UE sends information requesting the second base station to assist scheduling to the first base station, so that the first base station notifies the second base station to participate in the uplink scheduling of the UE.

Of course, there may be other ways to wake up the second base station, and the present invention is not limited herein.

Optionally, in the embodiment of the present invention, the UE may point to the control base station to send the BSR information. After receiving the BSR information, the control base station may select to forward the BSR information to other base stations that provide the offload transmission service for the UE, or send the indication information generated by the control base station according to the BSR information to other base stations that provide the offload transmission service for the UE.

In the present invention, the UE can report the BSR in multiple ways. The manner in which the UE reports the BSR can be applied to the embodiment shown in FIG. 2a, FIG. 2b, and FIG. 2c.

In an embodiment of the present invention, the UE may introduce a first indication information in the BSR, where the indication bit is used to indicate whether the current BSR includes bits (bytes) that are reported to other base stations but are not scheduled. A new type of padd i ng BSR that indicates "bits that have been reported to other base stations but have not been scheduled". The base station can avoid excessive authorization according to the first indication information. Further, an interaction mechanism may be introduced on the interface between the base stations responsible for the offload transmission, and there is not much data remaining in the UE (ie, the embodiment of FIG. 2a, FIG. 2b, and FIG. 2c is lower than the first buffered data amount threshold. In the case of the base station, the base station responsible for the offload transmission negotiates which base station to schedule.

Further, the second indication information may be further used to indicate whether the data size of the foregoing “bits that have been reported to other base stations but are not scheduled” is greater than a predetermined threshold, so that the base station responsible for the transmission according to the second indication Information is processed.

In another embodiment of the present invention, the UE mixes and encodes the BSR and the data each time the UE sends data. That is Whether to trigger the BSR, each time the data is uploaded, it carries a simple BSR.

3 is a flow chart of another method of data transmission in an embodiment of the present invention. The method of Figure 3 is performed by a second base station.

 301. The second base station receives the low buffered data volume indication information of the UE, where the low buffered data volume indication information is used to indicate that the data volume of the cached data of the user equipment UE is lower than a buffered data volume threshold corresponding to the cached data of the UE. The low buffered data amount indication information is sent by the UE or the low buffered data amount indication information is sent by the first base station.

 302. The second base station stops providing uplink scheduling for the UE according to the low buffered data volume indication information. The UE receives a traffic distribution service of at least two base stations, including the first base station and the second base station, where the first base station is configured to: when the data volume of the cached data of the UE is smaller than the first cache corresponding to the cached data of the UE. The uplink scheduling is provided for the UE when the data threshold is used.

In the embodiment of the present invention, the second base station receives the low buffer data amount indication information of the UE, and stops providing the uplink scheduling for the UE according to the low buffer data quantity indication information, thereby avoiding the waste of the base station resource scheduling, and improving the resource utilization efficiency.

In the embodiment of the present invention, the UE receives the offloading service of at least two base stations, including the first base station and the second base station. When the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the buffered data of the UE, the first base station provides uplink scheduling for the UE. In other cases, the UE may accept uplink scheduling of other base stations.

Optionally, when the low buffered data amount indication information is sent by the first base station, the low buffered data amount indication information is sent by the first base station through an interface of the first base station and the second base station.

 Optionally, as an embodiment, the second base station may receive recovery scheduling indication information sent by the UE, where the recovery scheduling indication information indicates that the second base station resumes providing uplink scheduling for the UE.

 Alternatively, as another embodiment, the second base station may receive recovery scheduling indication information sent by the first base station, where the recovery scheduling indication information indicates that the second base station resumes providing uplink scheduling for the UE.

4 is a flow chart of another method of data transmission in an embodiment of the present invention. The method of Figure 4 is performed by the first base station Row.

 401. The first base station compares a data volume of the cached data of the UE with a first buffered data volume threshold corresponding to the cached data of the UE.

 402. If the data volume of the cached data of the UE is smaller than a first buffered data volume threshold corresponding to the cached data of the UE, the first base station sends the low cached data volume indication information to the second base station. The low buffered data volume indication information is used to indicate that the second base station stops providing uplink scheduling for the UE. The user equipment UE receives the traffic distribution service of the at least two base stations, including the first base station and the second base station, where the data amount of the buffered data of the UE is smaller than the first cache data corresponding to the cache data of the UE. The UE provides uplink scheduling when the threshold is exceeded.

In the embodiment of the present invention, the first base station compares the data volume of the cached data of the UE with the first buffered data volume threshold corresponding to the cached data of the UE, and indicates, according to the comparison result, that the second base station stops providing uplink scheduling for the UE. To avoid waste of base station resource scheduling and improve resource utilization efficiency. Optionally, comparing, by the first base station, the data volume of the buffered data of the UE and the first buffered data volume threshold corresponding to the buffered data of the UE, the first base station compares the UE by receiving the BSR of the UE. Comparing a data amount of the cached data with a first cached data amount threshold corresponding to the cached data of the UE; and/or comparing, by the first base station, the data amount of the cached data of the UE and the cache of the UE when providing the uplink scheduling for the UE The first cache data amount threshold corresponding to the data.

Optionally, the first base station is a control base station, or the second base station is the control base station. The control base station is a base station of the at least two base stations responsible for managing mobility of the UE.

Optionally, the first buffered data volume threshold is a predetermined threshold or a threshold value determined by the control base station.

Optionally, the low cache data amount indication information may be represented by a BSR whose cache data is zero. Alternatively, the low buffered data amount indication information may be represented by a control element of the medium access control layer. Alternatively, the low buffer data indication information may be represented by a subheader of the medium access control layer. Alternatively, the low buffered data amount indication information may be represented by physical layer indication information.

Optionally, the method may further include: the first base station sending the first indication information to the UE. among them, The first indication information includes information that the second base station stops providing uplink scheduling for the UE.

Optionally, the method may further include: if the data amount of the buffered data of the UE in the UE is greater than a second buffered data volume threshold corresponding to the cached data of the UE, the first base station is sent to the second base station The recovery scheduling indication information is used to indicate that the second base station resumes providing uplink scheduling for the UE. The second buffered data amount threshold may be the same as the first cached data amount threshold or different from the first cached data amount threshold. The second buffered data amount threshold is a predetermined threshold or a threshold determined by the control base station.

It should be noted that, when the first base station sends the scheduling indication information or the recovery scheduling indication information to the second base station, the second base station may also indicate the transmission rate or the QoS required to be guaranteed, so that the second base station can Provide the UE with a service that determines quality.

Further, the method may further include: the first base station sending the second indication information to the UE. The second indication information includes information that the second base station resumes providing uplink scheduling for the UE.

Optionally, as an embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of all the first services of the UE; the first cached data volume threshold is all the first services of the UE. The data volume threshold of the cached data; the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE, and the data volume of the cached data of all the first services of the UE is smaller than The first cache data amount threshold. The first service is a traffic distribution service, or the first service includes a traffic distribution service and a non-offload service.

Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of each first logical channel group LCG of the UE; the first cached data volume threshold is a threshold value of the data volume corresponding to the first LCG, the threshold value of the first cache data corresponding to each first LCG is the same or different; the data volume of the cached data of the UE is smaller than the first corresponding to the cached data of the UE The buffered data volume threshold may include: the data amount of the cache data of each first LCG of the UE is smaller than the first cache data volume threshold corresponding to the LCG. The first LCG is an LCG that includes a traffic distribution service, or the first LCG includes an LCG that includes a traffic distribution service and an LCG that does not include a traffic distribution service. Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the buffered data of each of the offloaded services of the UE; the first cached data volume threshold is corresponding to each of the traffic offload services. The threshold value of the data volume, the threshold value of the first cache data corresponding to each of the split services is the same or different; the data volume of the cached data of the UE is smaller than the first cache data threshold corresponding to the cached data of the UE. The data volume of the buffered data of each of the offloaded services of the UE is smaller than the first cached data volume threshold corresponding to the offloaded service.

FIG. 5a is another flow chart of data transmission in an embodiment of the present invention. One embodiment of the present invention, as shown in Figure 5a, includes:

 501 a, the first base station and the second base station provide a shunt service provided by the UE.

In the embodiment of the present invention, the first base station and the second base station provide a data offload service for the UE, and receive uplink data of the UE. Specifically, the first base station is a base station for transmitting buffered data that is lower than the first buffered data volume threshold, or the first base station is configured to: when the data volume of the cached data of the UE is smaller than the first cached data threshold The value provides uplink scheduling for the UE.

Optionally, the first base station is a base station responsible for managing the mobility of the UE, in other words, the first base station is a control base station. At this time, the first base station may be a macro base station, and the second base station may be a neighboring macro base station of the first base station or a micro base station (small cell) of the first base station.

Alternatively, optionally, the second base station is a base station responsible for managing the mobility of the UE, that is, the second base station is a control base station. In this case, the second base station may be a macro base station, and the first base station may be a neighboring macro base station of the second base station or a micro base station (small cell) of the first base station.

Regardless of whether the first base station is the control base station or the second base station is the control base station, the UE accepts the first buffered data amount threshold value that the control base station configures for the UE.

In the embodiment of the present invention, the first buffered data volume threshold is a threshold value set for the UE as a whole, and is a threshold value of the cached data for all the first services of the UE. Optionally, the first service may be a traffic offloading service, where the first cached data volume threshold is used for the cached data of all the offloaded services of the UE. Alternatively, the first service may include a traffic splitting service and a non-offload traffic service, where the first cached data volume threshold is for cached data of all services of the UE. Or, optionally, the first industry Services may include SRB data, or may not include SRB data. When the control base station configures the first buffered data volume threshold for the UE, it may be configured according to the threshold value specified by the protocol, configured according to the data splitting policy of the operator, or determined according to factors such as channel quality, and specifically determined, the present invention There are no restrictions here.

Optionally, as a base station for transmitting buffer data of a UE whose data volume is lower than the threshold value of the first buffer data, the first base station is a predetermined base station, or is a base station determined by the control base station, or is selected by the UE. Base station. The predetermined base station may be predetermined as a macro base station or determined in advance as a micro base station. The base station determined by the control base station may be a base station that controls the base station to specify when configuring the offload transmission, or a base station determined according to factors such as channel conditions, network load, and the like. The base station selected by the UE may be a base station selected by the UE according to CQ I, QoS sharing, and satisfaction.

 502a. The first base station compares a relationship between a data volume of the cached data of the first service of the UE and a threshold value of the first cached data.

Optionally, the first base station may compare the data quantity of the cached data of the first service of the UE with the first cached data quantity threshold when receiving the BSR of the UE.

Alternatively, the first base station may compare the data quantity of the cache data of the first service of the UE with the first cache data quantity threshold when the uplink scheduling is provided for the UE.

If the first base station determines that the data volume of the cache data of all the first services of the UE is greater than the threshold value of the first cache data, the method is performed by referring to the original offloading method, and the details are not described herein again. If the first base station determines that the data amount of all the cached data of the UE is less than the first buffered data amount threshold, step 503a is performed. For the cached data of the UE whose buffer data amount is equal to the corresponding first cache data volume threshold, an optional solution may be considered as being processed greater than the corresponding first cache data volume threshold; The selected scheme can be regarded as being processed less than the corresponding first buffered data amount threshold.

 503a. Send low buffer data amount indication information to the second base station.

The low buffered data volume indication information indicates that the data amount of all cached data of the UE is lower than the first buffered data volume threshold of all cached data of the UE, so that the second base station stops the cached data corresponding to the UE. Resource scheduling.

In the embodiment of the present invention, the low buffer data amount indication information may have multiple representation manners. For example, send a BSR with a cached data of 0, or define a new MAC CE, specify a new RNT I to identify the UE is currently in a state of low cache data, or use the sub-header of the R/R/E/LC ID message (sub The R bit in -header ) indicates that the UE is currently in a state of low buffered data amount, and so on.

Optionally, after the low-cache data amount indication information is sent to the second base station, the first indication information may be sent to the UE, where the first indication information may include information that the second base station stops providing uplink scheduling for the UE, so that the UE Decide on the sending of cached data.

 504a. The first base station sends, to the UE, uplink scheduling information corresponding to the cached data of the UE.

505a. The first base station receives first uplink data that is sent by the UE according to the uplink scheduling information, where the uplink data includes cache data of the current time of the UE.

 506a. The first base station compares a relationship between a data volume of the cached data of the UE and a second buffered data volume threshold corresponding to the cached data of the UE.

The second buffered data volume threshold may be a first buffered data amount threshold, or may be a value greater than the first cached data amount threshold. Similar to the first cache data amount threshold, the second cache data amount threshold is configured by the control base station. By default, if the control base station does not configure the second buffered data volume threshold, the first buffered data volume threshold may be considered as a judgment. In other words, if the control base station does not configure the second cached data threshold. The second buffered data amount threshold is equal to the first cached data amount threshold.

If the first base station determines that the data amount of all the cached data of the UE is still less than the second buffered data amount threshold, step 504a is performed.

If the first base station determines that the data amount of all the buffered data of the UE is greater than the second buffered data volume threshold, step 507a is performed.

For the cached data of the UE whose buffer data amount is equal to the corresponding second cache data volume threshold, an optional solution may be considered as being processed greater than the corresponding second cache data volume threshold; The selected scheme can be regarded as being processed less than the corresponding second cache data amount threshold. Further, in step 506a, the first base station may add a timer for monitoring the duration that the data amount of the cache data of all the first services of the UE is greater than the threshold value of the second buffer data amount. If the data amount of the cache data of all the first services of the UE is greater than the second buffer data volume threshold, and the duration is greater than or equal to the predetermined time value, step 507a is performed, otherwise step 504a is performed. The value may be a time value determined by the base station according to factors such as an operator policy or a network environment condition. The specific determination method is not limited herein. When the timer monitors the duration, for an case where the buffered data amount is equal to the corresponding second cached data amount threshold, an optional solution may be considered to be greater than the corresponding second cached data amount threshold; Another alternative solution can be considered as processing less than the corresponding second cache data amount threshold. By increasing the monitoring of time values, the effects of transient traffic fluctuations caused by data emergencies can be avoided. 507a. Resume uplink scheduling of the second base station to the UE.

Optionally, the first base station sends the recovery scheduling indication information to the second base station. The recovery scheduling indication information may be used to indicate that the second base station resumes providing uplink scheduling for the UE. Optionally, the first base station may send the recovery scheduling indication information to the second base station by using the interface of the first base station and the second base station, where the recovery scheduling indication information may further carry the current BSR of the UE.

Optionally, after the first base station sends the recovery scheduling indication information to the second base station, the second indication information may be sent to the UE, where the second indication information includes information that the second base station resumes providing uplink scheduling for the UE.

Optionally, if the first base station is a control base station, the receiving unit receives the BSR information sent by the UE; if the first base station is not the control base station, the receiving unit does not receive the BSR information sent by the UE.

FIG. 5b is another interaction flowchart of data transmission in the embodiment of the present invention. An embodiment of the present invention, as shown in Figure 5b, includes:

 501b. The first base station and the second base station provide a shunt service for the UE.

In the embodiment of the present invention, the first base station and the second base station provide a data offload service for the UE, and receive uplink data of the UE. In particular, the first base station is configured to transmit a threshold lower than the threshold value of the first cached data. The base station storing the data, or the first base station, is configured to provide uplink scheduling for the UE when the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the buffered data of the UE.

Optionally, the first base station is a base station responsible for managing the mobility of the UE, in other words, the first base station is a control base station. At this time, the first base station may be a macro base station, and the second base station may be a neighboring macro base station of the first base station or a micro base station (small cell) of the first base station.

Alternatively, optionally, the second base station is a base station responsible for managing the mobility of the UE, that is, the second base station is a control base station. In this case, the second base station may be a macro base station, and the first base station may be a neighboring macro base station of the second base station or a micro base station (small cell) of the first base station.

Regardless of whether the first base station is the control base station or the second base station is the control base station, the UE accepts the first buffered data amount threshold value that the control base station configures for the UE.

In the embodiment of the present invention, the first buffered data amount threshold is a threshold value for the amount of cached data of each of the first LCGs in the UE. Optionally, the first LCG refers to an LCG that includes a traffic offloading service, that is, the first cached data volume threshold is only for an LCG that includes a traffic offloading service in the UE, and is not for an LCG that does not include the offloaded traffic, or, optionally, the first The LCG may include an LCG including a traffic offload service and an LCG that does not include a traffic offload service, that is, the first cached data volume threshold is for all LCGs in the UE. When the control base station configures the first buffered data volume threshold for the first LCG of the UE, a corresponding first cached data volume threshold may be separately configured for each first LCG, or a unified one may be configured for all the first LCGs. The first cached data amount threshold. In other words, the first cache data threshold corresponding to each first LCG of the UE may be the same or different.

Optionally, as a base station for transmitting buffer data of a UE whose data volume is lower than the threshold value of the first buffer data, the first base station is a predetermined base station, or is a base station determined by the control base station, or is selected by the UE. Base station. The predetermined base station may be predetermined as a macro base station or determined in advance as a micro base station. The base station determined by the control base station may be a base station that controls the base station to specify when configuring the offload transmission, or a base station determined according to factors such as channel conditions, network load, and the like. The base station selected by the UE may be a base station selected by the UE according to CQ I, QoS sharing, and satisfaction.

502b. The first base station compares the data volume of the cached data of each first LCG in the UE with the first LCG. Corresponding first cache data amount threshold.

Optionally, the first base station may compare the data volume of the buffer data of each first LCG in the UE with the first buffer data volume threshold corresponding to the first LCG when receiving the BSR of the UE.

Alternatively, the first base station may compare the data volume of the buffer data of each first LCG in the UE with the first buffer data volume threshold corresponding to the first LCG when the uplink scheduling is provided for the UE.

When the first base station compares the data amount of the buffer data of the first LCG with the first buffer data volume threshold corresponding to the cache data of the first LCG, it is required to compare the data amount of the cache data of each first LCG of the UE with the corresponding data. The relationship of the first cache data amount threshold. For the first LCG whose buffer data amount is equal to the corresponding first buffer data volume threshold, an optional scheme may be regarded as the first LCG processing that is greater than the corresponding first buffer data volume threshold; The optional solution may be regarded as the first LCG process that is smaller than the corresponding first buffered data amount threshold, and the following is related to the judgment of the cached data amount threshold. At this time, the result of the comparison by the first base station can be divided into three cases: In the first case, the data amount of the cache data of each of the first LCGs in the UE is smaller than the corresponding first cache data amount threshold. In the second case, the data amount of the cache data of each of the first LCGs in the UE is greater than the corresponding first cache data amount threshold. In the third case, the data volume of the cache data of the part of the first LCG in the UE is smaller than the corresponding first cache data amount threshold. For the first case and the third case, step 503b is performed; for the second case, the original shunt method is performed, and the present invention will not be repeated here.

 503b. Send low buffer data volume indication information to the second base station. The low buffered data amount indication information indicates that the data amount of the cache data of the at least one first LCG of the UE is lower than the first cache data amount threshold corresponding to the at least one first LCG.

If it belongs to the first case, the low buffer data amount indication information indicates that the data amount of the buffer data of all the first LCGs of the UE is lower than the first buffer data amount threshold corresponding to the first LCG, then the second base station stops. Provide uplink scheduling for the UE.

If it belongs to the third case, the low buffered data volume indication information indicates that the data amount of the buffered data of the part of the first LCG of the UE is lower than the first buffered data amount threshold corresponding to the first LCG. At this time, by A part of the first LCG needs to be transmitted to the second base station in the UE, so the second base station also needs to provide uplink scheduling for the UE. After receiving the uplink scheduling information of the second base station, the UE may transmit the uplink data to the second base station according to the priority of the UE. The method for transmitting is similar to the original method, and the description of the present invention is not repeated herein.

Optionally, after the low-cache data amount indication information is sent to the second base station, the first indication information may be sent to the UE, where the first indication information may include information that the second base station stops providing uplink scheduling for the UE, so that the UE Decide on the sending of cached data.

 504b. The first base station sends, to the UE, uplink scheduling information corresponding to the cached data of the UE.

505b. The first base station receives first uplink data that is sent by the UE according to the uplink scheduling information, where the uplink data includes cache data of the current time of the UE.

 506b. The first base station compares a data volume of the cache data of each first LCG currently used by the UE with a second buffer data volume threshold corresponding to the cache data of the first LCG.

The second buffered data volume threshold may be a first buffered data amount threshold, or may be a value greater than the first cached data amount threshold. Similar to the first cache data threshold, the second cache data threshold is configured by the control base station, and the second cache data threshold corresponding to each of the first LCG cache data may be the same or different. By default, if the control base station does not configure the second buffered data volume threshold, the first buffered data volume threshold may be considered as a judgment. In other words, if the control base station does not configure the second cached data threshold. The second buffered data amount threshold is equal to the first cached data amount threshold.

For the first LCG whose buffer data amount is equal to the corresponding second buffer data volume threshold, an optional scheme may be regarded as the first LCG processing that is greater than the corresponding second buffer data volume threshold; The optional solution may be regarded as the first LCG process that is smaller than the corresponding second cache data amount threshold.

If the first base station determines that the data amount of each of the current LCG cache data of the UE is less than the second buffer data amount threshold, step 504b is performed.

If the first base station determines that the buffer data amount of the part or all of the first LCG of the current UE is greater than the second buffer data quantity threshold corresponding to the first LCG, step 507b is performed. Further, in step 506b, the first base station may add a timer for monitoring that the data volume of the current first LCG cache data of the UE is greater than the second cache data volume threshold corresponding to the cache data of the first LCG. duration. If the amount of data of the buffered data of the first LCG of the UE is greater than the second buffered data amount threshold corresponding to the cached data of the first LCG of the UE, and the duration is greater than or equal to a predetermined time value, Then step 507b is performed, otherwise step 504b is performed. The predetermined time value may be a time value determined by the base station according to factors such as an operator policy or a network environment condition. The specific determining method is not limited herein. When the timer monitors the duration, for each cache data of the first LCG whose cache data amount is equal to the corresponding second cache data volume threshold, an optional scheme may be regarded as greater than the corresponding second cache data amount. The first LCG processing of the threshold value; another alternative scheme, which can be regarded as the first LCG processing that is smaller than the corresponding second buffered data amount threshold. By increasing the monitoring of time values, the effects of transient traffic fluctuations caused by data emergencies can be avoided.

507b: Resume uplink scheduling of the second base station to the UE.

Optionally, the first base station sends the recovery scheduling indication information to the second base station. The recovery scheduling indication information may be used to indicate that the second base station resumes providing uplink scheduling for the UE. Optionally, the first base station may send the recovery scheduling indication information to the second base station by using the interface of the first base station and the second base station, where the recovery scheduling indication information may further carry the current BSR of the UE.

Optionally, after the first base station sends the recovery scheduling indication information to the second base station, the second indication information may be sent to the UE, where the second indication information includes information that the second base station resumes providing uplink scheduling for the UE.

Figure 5c is another flow diagram of the interaction of data transmission in an embodiment of the present invention. An embodiment of the present invention, as shown in Figure 5c, includes:

 501c. The first base station and the second base station provide a shunt service for the UE.

In the embodiment of the present invention, the first base station and the second base station provide a data offload service for the UE, and receive uplink data of the UE. Specifically, the first base station is a base station for transmitting buffered data of the offloaded traffic whose buffered data amount is lower than the corresponding first buffered data volume threshold, or the first base station is used by the UE. The uplink scheduling is provided for the UE when the data volume of the buffered data is smaller than the first buffered data volume threshold corresponding to the cached data of the UE.

Optionally, the first base station is a base station responsible for managing the mobility of the UE, in other words, the first base station is a control base station. At this time, the first base station may be a macro base station, and the second base station may be a neighboring macro base station of the first base station or a micro base station (small cell) of the first base station.

Alternatively, optionally, the second base station is a base station responsible for managing the mobility of the UE, that is, the second base station is a control base station. In this case, the second base station may be a macro base station, and the first base station may be a neighboring macro base station of the second base station or a micro base station (small cell) of the first base station.

Regardless of whether the first base station is the control base station or the second base station is the control base station, the UE accepts the first buffered data amount threshold value that the control base station configures for the UE.

In the embodiment of the present invention, the first buffered data amount threshold is a threshold value for the amount of cached data for each of the offloaded services in the UE. When the control base station configures the first buffered data volume threshold for the offloading service of the UE, a corresponding first cached data volume threshold may be separately configured for each of the traffic distribution services, or a unified configuration may be configured for all the traffic distribution services to be configured. The first cached data amount threshold. In other words, each of the UEs needs to configure the offloaded service, and the corresponding first cached data threshold may be the same or different.

Optionally, as a base station for transmitting buffer data of a UE whose data volume is lower than the threshold value of the first buffer data, the first base station is a predetermined base station, or is a base station determined by the control base station, or is a UE according to the base station. Base station for channel quality selection. The predetermined base station may be predetermined as a macro base station or may be predetermined as a micro base station. The base station determined by the control base station may be a base station that controls the base station to specify when configuring the offload transmission, or a base station determined according to factors such as channel conditions, network load, and the like. The base station selected by the UE may be a base station selected by the UE according to CQ I, QoS sharing, and satisfaction. 502c. The first base station compares the data volume of the buffered data of each of the offloaded services in the UE with the first buffered data volume threshold of the corresponding offloaded traffic.

Optionally, the first base station may compare when receiving the BSR of the UE.

Alternatively, optionally, the first base station may perform comparison when providing uplink scheduling for the UE. When comparing, by the first base station, the data volume of the buffered data of the traffic offloading service and the first cached data volume threshold corresponding to the buffered data of the traffic offloading service, the data volume of the cached data of each of the offloaded services of the UE needs to be compared with the corresponding first cache. The relationship between data volume thresholds. For the offloading service with the buffered data amount being equal to the corresponding first cached data volume threshold, an optional solution may be regarded as a traffic splitting service that is greater than the corresponding first cached data volume threshold; The solution can be regarded as a traffic offload service that is smaller than the corresponding first cache data amount threshold. At this time, the result of the comparison by the first base station can be divided into three cases: In the first case, the data amount of the buffered data of each of the offloaded services in the UE is smaller than the corresponding first cached data amount threshold. In the second case, the data volume of the buffered data of each of the offloaded services in the UE is greater than the corresponding first cached data volume threshold. In the third case, the data volume of the buffered data of the partial offload service in the UE is smaller than the corresponding first cached data volume threshold. For the first case and the third case, step 503c is performed; for the second case, the original shunt method is performed, and the present invention is not described herein again.

503c. Send a low buffer data amount indication information to the second base station.

The low buffered data volume indication information indicates that the data volume of the buffered data of the at least one offloading service of the UE is lower than the first buffered data volume threshold corresponding to the at least one traffic offloading service. If the data of the cached data indicating that all the offloaded services of the UE are lower than the first buffered data volume threshold corresponding to the traffic offloading service, the second base station stops as the UE. Provide uplink scheduling. If it belongs to the third case, the low buffered data volume indication information indicates that the data volume of the buffered data of the partial offloading service of the UE is lower than the first buffered data volume threshold corresponding to the traffic offloading service. At this time, since some of the offloaded services in the UE need to be transmitted to the second base station, the second base station also needs to provide uplink scheduling for the UE. After receiving the uplink scheduling information of the second base station, the UE may transmit the uplink data to the second base station according to the priority of the UE. The method for transmitting is similar to the original method, and the present invention is not described herein again.

Optionally, after the low-cache data amount indication information is sent to the second base station, the first indication information may be sent to the UE, where the first indication information may include information that the second base station stops providing uplink scheduling for the UE, so that the UE Decide on the sending of cached data. 504c. The first base station sends, to the UE, uplink scheduling information corresponding to the cached data of the UE.

 505c. The first base station receives first uplink data that is sent by the UE according to the uplink scheduling information, where the uplink data includes cache data of the current time of the UE.

 506c. The first base station compares a data volume of the cached data of each current offload service of the UE with a second cached data volume threshold corresponding to the cached data of the offloaded service.

The second buffered data volume threshold may be a first buffered data amount threshold, or may be a value greater than the first cached data amount threshold. Similar to the first buffered data volume threshold, the second cached data threshold is configured by the control base station, and the second cached data threshold corresponding to the buffered data of each of the split services may be the same and may be different. By default, if the control base station does not configure the second buffered data volume threshold, the first buffered data volume threshold may be considered as a judgment. In other words, if the control base station does not configure the second cached data threshold. The second buffered data amount threshold is equal to the first cached data amount threshold.

For the offloading service with the buffered data amount being equal to the corresponding second buffered data volume threshold, an optional solution may be regarded as the offloading service processing that is greater than the corresponding second cached data volume threshold; The scheme can be regarded as a traffic offloading service that is smaller than the corresponding threshold value of the second cached data.

If the first base station determines that the data volume of each of the current offloaded service cache data of the UE is smaller than the second cached data volume threshold corresponding to the offloaded service, step 504c is performed.

If the first base station determines that the buffered data volume of the partial or full partial traffic service in the UE is greater than the second buffered data volume threshold corresponding to the traffic distribution service, step 507c is performed.

Further, in step 506c, the first base station may add a timer for monitoring the duration of the current data of the current offloaded service cache data of the UE is greater than the duration of the second cached data quantity threshold corresponding to the cached data of the offloaded service. . If the data amount of the buffered data of the offloaded service of the UE is greater than the second cached data amount threshold corresponding to the cached data of the UE's offloaded service, and the duration is greater than or equal to a predetermined time value, execute Step 507c, otherwise step 504c is performed. The predetermined time value may be a time value determined by the base station according to factors such as an operator policy or a network environment condition. The specific determining method is not limited herein. Timer monitoring duration The buffering data of each of the traffic distribution services whose buffer data amount is equal to the corresponding second buffer data volume threshold may be regarded as a traffic distribution service that is greater than the corresponding second cache data volume threshold. Processing; another optional solution, which can be regarded as a traffic offload processing that is smaller than a corresponding second cache data amount threshold. By increasing the monitoring of time values, the effects of transient traffic fluctuations caused by data emergencies can be avoided.

 507c, recovering the uplink scheduling of the UE by the second base station.

Optionally, the first base station sends the recovery scheduling indication information to the second base station. The recovery scheduling indication information may be used to indicate that the second base station resumes providing uplink scheduling for the UE. Optionally, the first base station may send the recovery scheduling indication information to the second base station by using the interface of the first base station and the second base station, where the recovery scheduling indication information may further carry the current BSR of the UE.

Optionally, after the first base station sends the recovery scheduling indication information to the second base station, the second indication information may be sent to the UE, where the second indication information includes information that the second base station resumes providing uplink scheduling for the UE.

6 is a flow chart of another method of data transmission in an embodiment of the present invention. The method of Figure 6 is performed by the first base station.

 601. The first base station compares a data volume of the cached data of the user equipment UE with a first cache data volume threshold corresponding to the cached data of the UE.

 602. If the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE, the first base station stops uplink scheduling for the UE, where the UE accepts the first The offloading service of the at least two base stations, the base station and the second base station, the second base station provides uplink for the UE when the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the buffered data of the UE Scheduling.

In the embodiment of the present invention, the first base station compares the data volume of the cached data of the UE with the first buffered data volume threshold corresponding to the cached data of the UE, and stops providing uplink scheduling for the UE according to the comparison result, thereby avoiding base station resources. The waste of scheduling increases the efficiency of resource utilization.

Optionally, the first base station compares the data volume of the cached data of the UE with the cached data of the UE. The first buffered data volume threshold may include: comparing, by the first base station, the data amount of the cached data of the UE to the first cached data volume threshold corresponding to the cached data of the UE when receiving the BSR of the UE; and Or the first base station compares the data volume of the cached data of the UE with the first cached data volume threshold corresponding to the cached data of the UE when the uplink scheduling is provided for the UE.

Optionally, the first base station is a control base station, or the second base station is the control base station. The control base station is a base station of the at least two base stations responsible for managing mobility of the UE.

Optionally, the first buffered data volume threshold is a predetermined threshold or a threshold value determined by the control base station.

Optionally, the method may further include: the first base station sends, to the second base station, a low-cache data amount indication information, where the data volume of the low-cache data indicating information carrying the cached data of the UE is smaller than the cached data of the UE. The first cached data amount threshold information.

Optionally, the low cache data amount indication information may be represented by a BSR whose cache data is zero. Alternatively, the low buffered data amount indication information may be represented by a control element of the medium access control layer. Alternatively, the low buffer data indication information may be represented by a subheader of the medium access control layer. Alternatively, the low buffered data amount indication information may be represented by physical layer indication information.

Optionally, the method may further include: receiving recovery scheduling indication information sent by the second base station. According to the recovery scheduling indication information, the uplink scheduling is provided for the UE.

Optionally, as an embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of all the first services of the UE; the first cached data volume threshold is all the first services of the UE. The data volume threshold of the cached data; the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE, and the data volume of the cached data of all the first services of the UE is smaller than The first cache data amount threshold. The first service is a traffic distribution service, or the first service includes a traffic distribution service and a non-offload service.

Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of each first logical channel group LCG of the UE; the first cached data volume threshold is a data amount threshold corresponding to the first LCG, the first cache number corresponding to each first LCG The data threshold of the first buffered data of the first LCG of the UE may be: the data volume of the cached data of each first LCG of the UE may be: Both are smaller than the first cache data amount threshold corresponding to the LCG. The first LCG is an LCG that includes a traffic distribution service, or the first LCG includes an LCG that includes a traffic distribution service and an LCG that does not include a traffic distribution service.

Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the buffered data of each of the offloaded services of the UE; the first cached data volume threshold is corresponding to each of the traffic offload services. The threshold value of the data volume, the threshold value of the first cache data corresponding to each of the split services is the same or different; the data volume of the cached data of the UE is smaller than the first cache data threshold corresponding to the cached data of the UE. The data volume of the buffered data of each of the offloaded services of the UE is smaller than the first cached data volume threshold corresponding to the offloaded service.

Figure 7a is another flow diagram of the interaction of data transmission in an embodiment of the present invention. One embodiment of the present invention, as shown in Figure 7a, includes:

 701 a. The first base station and the second base station provide a offload service provided by the UE.

In the embodiment of the present invention, the first base station and the second base station provide a data offload service for the UE, and receive uplink data of the UE. Specifically, the second base station is a base station for transmitting buffer data lower than the first buffered data amount threshold. Or, the second base station is configured to provide uplink scheduling for the UE when the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE.

Optionally, the first base station is a base station responsible for managing the mobility of the UE, in other words, the first base station is a control base station. At this time, the first base station may be a macro base station, and the second base station may be a neighboring macro base station of the first base station or a micro base station (small cell) of the first base station.

Alternatively, optionally, the second base station is a base station responsible for managing the mobility of the UE, that is, the second base station is a control base station. In this case, the second base station may be a macro base station, and the first base station may be a neighboring macro base station of the second base station or a micro base station (small cell) of the first base station.

Regardless of whether the first base station is the control base station or the second base station is the control base station, the UE accepts the first buffered data amount threshold value that the control base station configures for the UE. In the embodiment of the present invention, the first buffered data volume threshold is a threshold value set for the UE as a whole, and is a threshold value of the cached data for all the first services of the UE. Optionally, the first service may be a traffic offloading service, where the first cached data volume threshold is used for the cached data of all the offloaded services of the UE. Alternatively, the first service may include a traffic splitting service and a non-offload traffic service, where the first cached data volume threshold is for cached data of all services of the UE. Alternatively, optionally, the first service may include SRB data, or may not include SRB data. When the control base station configures the first buffered data volume threshold for the UE, it may be configured according to the threshold value specified by the protocol, configured according to the data splitting policy of the operator, or determined according to factors such as channel quality, and specifically determined, the present invention There are no restrictions here.

Optionally, as a base station for transmitting buffer data of a UE whose data volume is lower than the threshold value of the first buffer data, the second base station is a predetermined base station, or is a base station determined by the control base station, or is a UE according to the base station. Base station for channel quality selection. The predetermined base station may be predetermined as a macro base station or may be predetermined as a micro base station. The base station determined by the control base station may be a base station that controls the base station to specify when configuring the offload transmission, or a base station determined according to factors such as channel conditions, network load, and the like. The base station selected by the UE may be a base station selected by the UE according to CQ I, QoS sharing, and satisfaction. 702a. The first base station compares a relationship between a data volume of the cached data of the first service of the UE and a threshold value of the first cached data.

Optionally, the first base station may compare the data quantity of the cached data of the first service of the UE with the threshold value of the first cached data when receiving the BSR of the UE.

Alternatively, the first base station may compare the data quantity of the cache data of the first service of the UE with the first cache data quantity threshold when the uplink scheduling is provided for the UE.

If the first base station determines that the data volume of the cache data of all the first services of the UE is greater than the threshold value of the first cache data, the method is performed by referring to the original offloading method, and the description is not repeated herein. If the first base station determines that the data amount of all the cache data currently being used by the UE is less than the first cache data amount threshold, step 703a is performed. For the cached data of the UE whose buffer data amount is equal to the corresponding first cache data volume threshold, an optional solution may be considered to be greater than the corresponding first cache data volume threshold. The situation is handled; another alternative solution can be considered as less than the case of the corresponding first cached data amount threshold.

 703a. The first base station stops providing uplink scheduling for the UE.

704a. The first base station sends low cache data amount indication information to the second base station.

The low buffered data volume indication information indicates that the data volume of all the buffered data of the UE is lower than the first buffered data volume threshold of all the cached data of the UE, so that the second base station provides the uplink scheduling for the UE according to the low buffered data volume indication information. Reduce the waste of scheduling resources.

 705a. The second base station sends, to the UE, uplink scheduling information corresponding to the cached data of the UE.

706a. The second base station receives the first uplink data that is sent by the UE according to the uplink scheduling information, where the uplink data includes the cached data of the current time of the UE.

 707a. The second base station compares a relationship between a data amount of the cached data of the UE and a second buffered data volume threshold corresponding to the cached data of the UE.

The second buffered data volume threshold may be a first buffered data amount threshold, or may be a value greater than the first cached data amount threshold. Similar to the first cache data amount threshold, the second cache data amount threshold is configured by the control base station.

If the second base station determines that the data amount of all the cached data of the UE is still less than the second buffered data amount threshold, step 705a is performed.

If the second base station determines that the data amount of all the buffered data of the UE is greater than the second buffered data amount threshold, step 708a is performed.

For the cached data of the UE whose buffer data amount is equal to the corresponding second cache data volume threshold, an optional solution may be considered as being processed greater than the corresponding second cache data volume threshold; The selected scheme can be regarded as being processed less than the corresponding second cache data amount threshold.

Further, in step 707a, the second base station may add a timer for monitoring the duration that the data amount of the cache data of all the first services of the UE is greater than the threshold value of the second buffer data amount. If the data amount of the cache data of all the first services of the UE is greater than the second cache data volume threshold, and the duration is greater than or equal to the predetermined time value, step 708a is performed, otherwise the step is performed. 705a o The predetermined time value may be a time value determined by the base station according to factors such as an operator policy or a network environment condition, and the specific determining method is not limited herein. When the timer monitors the duration, for an case where the buffered data amount is equal to the corresponding second cached data amount threshold, an optional solution may be considered to be greater than the corresponding second cached data amount threshold; Another alternative solution can be considered as processing less than the corresponding second cache data amount threshold. By increasing the monitoring of time values, the effects of transient traffic fluctuations caused by data emergencies can be avoided. 708a. The second base station sends resume scheduling indication information to the first base station.

The recovery scheduling indication information indicates that the first base station resumes providing uplink scheduling for the UE.

709a. The first base station resumes uplink scheduling for the UE.

The first base station resumes providing uplink scheduling for the UE according to the recovery scheduling indication information.

FIG. 7b is another flow chart of data transmission in the embodiment of the present invention. An embodiment of the present invention, as shown in Figure 7b, includes:

 701b. The first base station and the second base station provide a offloading service provided by the UE.

In the embodiment of the present invention, the first base station and the second base station provide a data offload service for the UE, and receive uplink data of the UE. Specifically, the second base station is a base station for transmitting buffer data lower than the first buffered data amount threshold. Or, the second base station is configured to provide uplink scheduling for the UE when the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE.

Optionally, the first base station is a base station responsible for managing the mobility of the UE, in other words, the first base station is a control base station. At this time, the first base station may be a macro base station, and the second base station may be a neighboring macro base station of the first base station or a micro base station (small cell) of the first base station.

Alternatively, optionally, the second base station is a base station responsible for managing the mobility of the UE, that is, the second base station is a control base station. In this case, the second base station may be a macro base station, and the first base station may be a neighboring macro base station of the second base station or a micro base station (small cell) of the first base station.

Regardless of whether the first base station is the control base station or the second base station is the control base station, the UE accepts the first buffered data amount threshold value that the control base station configures for the UE.

In the embodiment of the present invention, the first buffered data volume threshold is for each first LCG in the UE. The threshold for storing data. Optionally, the first LCG refers to an LCG that includes a traffic offloading service, that is, the first cached data volume threshold is only for an LCG that includes a traffic offloading service in the UE, and is not for an LCG that does not include the offloaded traffic, or, optionally, the first The LCG may include an LCG including a traffic offload service and an LCG that does not include a traffic offload service, that is, the first cached data volume threshold is for all LCGs in the UE. When the control base station configures the first buffered data volume threshold for the first LCG of the UE, a corresponding first cached data volume threshold may be separately configured for each first LCG, or a unified one may be configured for all the first LCGs. The first cached data amount threshold. In other words, the threshold value of the corresponding first cache data may be the same or different for each first LCG of the UE.

Optionally, as a base station for transmitting buffer data of a UE whose data volume is lower than the threshold value of the first buffer data, the second base station is a predetermined base station, or is a base station determined by the control base station, or is a UE according to the base station. Base station for channel quality selection. The predetermined base station may be predetermined as a macro base station or may be predetermined as a micro base station. The base station determined by the control base station may be a base station that controls the base station to specify when configuring the offload transmission, or a base station determined according to factors such as channel conditions, network load, and the like. The base station selected by the UE may be a base station selected by the UE according to CQ I, QoS sharing, and satisfaction. 702b. The first base station compares, by the first base station, the data volume of the buffer data of each first LCG in the UE with the first buffer data volume threshold corresponding to the first LCG.

Optionally, the first base station may compare the data volume of the buffer data of each first LCG in the UE with the first buffer data volume threshold corresponding to the first LCG when receiving the BSR of the UE.

Optionally, the first base station may compare the data volume of the buffer data of each first LCG in the UE with the first buffer data volume threshold corresponding to the first LCG when the uplink scheduling is provided for the UE.

When the first base station compares the data amount of the buffer data of the first LCG with the first buffer data volume threshold corresponding to the cache data of the first LCG, it is required to compare the data amount of the cache data of each first LCG of the UE with the corresponding data. The relationship of the first cache data amount threshold. For the first LCG whose buffer data amount is equal to the corresponding first buffer data volume threshold, an optional scheme may be regarded as the first LCG processing that is greater than the corresponding first buffer data volume threshold; An optional solution may be regarded as a first LCG process that is smaller than a corresponding first cached data amount threshold, and the following relates to determining a cached data amount threshold, Similar to this. At this time, the result of the comparison by the first base station can be divided into three cases: In the first case, the data amount of the cache data of each of the first LCGs in the UE is smaller than the corresponding first cache data amount threshold. In the second case, the data amount of the cache data of each of the first LCGs in the UE is greater than the corresponding first cache data amount threshold. In a third case, the data volume of the cache data of the part of the first LCG in the UE is smaller than the corresponding first cache data amount threshold. Step 703b is performed for the first case, and is performed with reference to the original split method for the second case, and the present invention is not described herein again. For the third case, the first base station needs to provide uplink scheduling for the UE, since the UE still has a part of the first LCG that needs uplink scheduling. After the first base station provides the uplink scheduling for the UE, the uplink data may be transmitted to the second base station according to the priority of the UE. The method for transmitting is similar to the original method, and the present invention is not described herein again. The second base station sends the low buffered data amount indication information, that is, step 704b is performed.

 703b. The first base station stops providing uplink scheduling for the UE.

 704b. The first base station sends low cache data amount indication information to the second base station. The low buffer data volume indication information indicates that the data volume of the cache data of the at least one first LCG of the UE is lower than the first buffer data volume threshold corresponding to the first LCG.

If it belongs to the first case, the low buffered data amount indication information indicates that the data amount of the cache data of all the first LCGs of the UE is lower than the first buffered data amount threshold corresponding to the first LCG.

If it belongs to the third case, the low buffered data amount indication information indicates that the data amount of the buffered data of the part of the first LCG of the UE is lower than the first buffered data amount threshold corresponding to the first LCG.

705b. The second base station sends, to the UE, uplink scheduling information corresponding to the cached data of the UE.

 706b. The second base station receives the first uplink data that is sent by the UE according to the uplink scheduling information, where the uplink data includes the cached data of the current time of the UE.

 707b. The second base station compares the relationship between the data volume of the cached data of the UE and the second buffered data volume threshold corresponding to the cached data of the UE.

The second buffered data volume threshold may be a first buffered data amount threshold, or may be a value greater than the first cached data threshold. Similar to the first cache data threshold, the second slow The stored data threshold is configured by the control base station.

For the first LCG whose buffer data amount is equal to the corresponding second buffer data volume threshold, an optional scheme may be regarded as the first LCG processing that is greater than the corresponding second buffer data volume threshold; The optional solution may be regarded as the first LCG process that is smaller than the corresponding second cache data amount threshold.

If the second base station determines that the data volume of all the first LCG cache data of the UE is still smaller than the second buffer data volume threshold corresponding to the first LCG, step 705b is performed.

If the second base station determines that the buffer data amount of some or all of the first LCGs in the UE is greater than the second buffer data volume threshold corresponding to the first LCG, step 708b is performed.

Similar to step 707a, in the embodiment of the present invention, the second base station may also add a timer for monitoring that the data amount of the current first LCG cache data of the UE is greater than the second cache data corresponding to the cache data of the first LCG. The duration of the threshold. By increasing the monitoring of the time value, the effects of instantaneous traffic fluctuations caused by sudden events can be avoided.

 708b. The second base station sends the recovery scheduling indication information to the first base station.

The recovery scheduling indication information indicates that the first base station resumes providing uplink scheduling for the UE.

709b. The first base station resumes uplink scheduling for the UE.

The first base station resumes uplink scheduling for the UE according to the recovery scheduling indication information.

Figure 7c is another flow diagram of the interaction of data transmission in an embodiment of the present invention. An embodiment of the present invention, as shown in Figure 7c, includes:

 701c. The first base station and the second base station provide a shunt service for the UE.

In the embodiment of the present invention, the first base station and the second base station provide a data offload service for the UE, and receive uplink data of the UE. Specifically, the second base station is a base station for transmitting buffer data lower than the first buffered data amount threshold. Or, the second base station is configured to provide uplink scheduling for the UE when the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE.

Optionally, the first base station is a base station responsible for managing mobility of the UE, in other words, the first base station is a control base station. In this case, the first base station may be a macro base station, and the second base station may be a neighboring macro base station of the first base station or a micro base station (small cell) of the first base station. Alternatively, optionally, the second base station is a base station responsible for managing mobility of the UE, that is, the second base station is a control base station. In this case, the second base station may be a macro base station, and the first base station may be a neighboring macro base station of the second base station or a micro base station (small cell) of the first base station.

Regardless of whether the first base station is the control base station or the second base station is the control base station, the UE accepts the first buffered data amount threshold value that the control base station configures for the UE.

Optionally, the first buffered data volume threshold is a threshold value for the amount of buffered data for each of the offloaded services in the UE. When the control base station configures the first buffered data volume threshold for the offloading service of the UE, a corresponding first cached data volume threshold may be separately configured for each of the traffic distribution services, or a unified configuration may be configured for all the traffic distribution services to be configured. The first cached data amount threshold. In other words, each of the UEs needs to configure a traffic distribution service, and the corresponding first cache data volume threshold may be the same or different.

Optionally, as a base station for transmitting buffer data of a UE whose data volume is lower than the threshold value of the first buffer data, the second base station is a predetermined base station, or is a base station determined by the control base station, or is a UE according to the base station. Base station for channel quality selection. The predetermined base station may be predetermined as a macro base station or may be predetermined as a micro base station. The base station determined by the control base station may be a base station that controls the base station to specify when configuring the offload transmission, or a base station determined according to factors such as channel conditions, network load, and the like. The base station selected by the UE may be a base station selected by the UE according to CQ I, QoS sharing, and satisfaction. 702c. The first base station compares the data volume of the buffered data of each of the offloaded services in the UE with the first buffered data volume threshold of the corresponding offloaded traffic.

Optionally, the first base station may compare the data volume of the buffered data of each of the offloaded services in the UE with the first buffered data volume threshold of the corresponding offloaded service when receiving the BSR of the UE.

Optionally, the first base station may compare the data volume of the buffered data of each of the offloaded services in the UE with the first buffered data volume threshold of the corresponding offloaded service when the uplink scheduling is provided for the UE.

When comparing, by the first base station, the data volume of the buffered data of the traffic offloading service and the first cached data volume threshold corresponding to the buffered data of the traffic offloading service, the data volume of the cached data of each of the offloaded services of the UE needs to be compared with the corresponding first cache. The relationship between data volume thresholds. For the amount of cached data is equal to the corresponding The traffic splitting service of the first cached data volume threshold, an optional solution, which can be regarded as a traffic splitting service that is greater than the corresponding first cached data volume threshold; another optional solution, which can be regarded as less than The corresponding traffic processing of the first cached data amount threshold. At this time, the result of the comparison by the first base station can be divided into three cases: In the first case, the data amount of the buffered data of each of the offloaded services in the UE is smaller than the corresponding first cached data amount threshold. In the second case, the data volume of the buffered data of each of the offloaded services in the UE is greater than the corresponding first cached data volume threshold. In the third case, the data volume of the buffered data of the partial offload service in the UE is smaller than the corresponding first cached data volume threshold. For the first case, step 703c is performed; for the second case, the original shunt method is performed, and the present invention will not be described herein. For the third case, the first base station needs to provide uplink scheduling for the UE, since the UE also needs to perform uplink scheduling for part of the traffic distribution. After the first base station provides the uplink scheduling for the UE, the uplink data may be transmitted to the second base station according to the priority of the UE. The method for transmitting is similar to the original method, and the present invention is not described herein again. The second base station sends the low buffered data amount indication information, that is, step 704c is performed.

703c. The first base station stops providing uplink scheduling for the UE.

704c. The first base station sends low cache data amount indication information to the second base station.

The low buffered data volume indication information indicates that the data volume of the buffered data of the at least one offloading service of the UE is lower than the first buffered data volume threshold corresponding to the at least one traffic offloading service. If it belongs to the first case, the low buffered data amount indication information indicates that the data volume of the buffered data of all the offloaded services of the UE is lower than the first cached data amount threshold corresponding to the offloaded service. If it belongs to the third case, the low buffered data volume indication information indicates that the data volume of the buffered data of the partial offloading service of the UE is lower than the first buffered data volume threshold corresponding to the traffic offloading service.

705c. The second base station sends uplink scheduling information to the UE.

 706c. The second base station receives the first uplink data that is sent by the UE according to the uplink scheduling information, where the uplink data includes the cached data of the current time of the UE.

707c. The second base station compares a relationship between a data volume of the cached data of the UE and a second cached data volume threshold corresponding to the cached data of the UE. The second buffered data volume threshold may be a first buffered data amount threshold, or may be a value greater than the first cached data threshold. Similar to the first buffered data volume threshold, the second cached data threshold is configured by the control base station, and the second cached data threshold corresponding to the cached data of each of the split services may be the same and may be different.

For the offloading service with the buffered data amount being equal to the corresponding second buffered data volume threshold, an optional solution may be regarded as the offloading service processing that is greater than the corresponding second cached data volume threshold; The scheme can be regarded as a traffic offloading service that is smaller than the corresponding threshold value of the second cached data. If the second base station determines that the data volume of each of the current offloaded traffic buffer data of the UE is smaller than the second cached data volume threshold corresponding to the offloaded service, step 705c is performed.

If the second base station determines that the buffered data volume of the partial or full partial traffic service in the UE is greater than the second cache data volume threshold corresponding to the traffic splitting service, perform 708c.

Similar to step 707a, in the embodiment of the present invention, the second base station may also add a timer for monitoring that the data amount of the current first LCG cache data of the UE is greater than the second cache data corresponding to the cache data of the first LCG. The duration of the threshold. By increasing the monitoring of the time value, the effects of instantaneous traffic fluctuations caused by sudden events can be avoided.

 708c. The second base station sends the recovery scheduling indication information to the first base station.

The recovery scheduling indication information indicates that the first base station resumes providing uplink scheduling for the UE.

 709c. The first base station resumes uplink scheduling for the UE.

The first base station resumes uplink scheduling for the UE according to the recovery scheduling indication information.

FIG. 8 is a flowchart of a method for data transmission according to an embodiment of the present invention. The method of Figure 8 is performed by the UE.

 801. The UE compares a data volume of the cached data of the UE with a first cached data volume threshold corresponding to the cached data of the UE.

 802. If the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE, the UE sends the uplink data of the BSR that carries the UE to the base station, where the UE accepts the A shunt service for at least two base stations, including a base station.

In the embodiment of the present invention, the data amount of the cached data of the UE is compared with the cached data of the UE. The first buffered data volume threshold value, and when the data amount of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE, each time the uplink data is sent, the current BSR information of the UE is carried. In order to let the scheduled base station know the cache condition of the UE in time, avoid over-scheduling, and reduce waste of scheduling resources.

Optionally, the first buffered data volume threshold is a threshold that may be a predetermined threshold or a threshold determined by the control base station. The control base station is a base station of the at least two base stations responsible for managing the mobility of the UE. The predetermined threshold value may be specified by the agreement, or other conditions, and the invention is not limited herein. There are various ways for the control base station to determine the threshold value of the first cached data. The present invention is not limited thereto.

Optionally, as an embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of all the first services of the UE; the first cached data volume threshold is all the first services of the UE. The data volume threshold of the cached data; the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE, and the data volume of the cached data of all the first services of the UE is smaller than The first cache data amount threshold. The first service is a traffic distribution service, or the first service includes a traffic distribution service and a non-offload service.

Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of each first logical channel group LCG of the UE; the first cached data volume threshold is a threshold value of the data volume corresponding to the first LCG, the threshold value of the first cache data corresponding to each first LCG is the same or different; the data volume of the cached data of the UE is smaller than the first corresponding to the cached data of the UE The buffered data volume threshold may include: the data amount of the cache data of each first LCG of the UE is smaller than the first cache data volume threshold corresponding to the LCG. The first LCG is an LCG that includes a traffic distribution service, or the first LCG includes an LCG that includes a traffic distribution service and an LCG that does not include a traffic distribution service.

Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the buffered data of each of the offloaded services of the UE; the first cached data volume threshold is corresponding to each of the traffic offload services. Data volume threshold, the first cache data threshold corresponding to each offload service The same or different; the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE, and the data volume of the cached data of each of the offloaded services of the UE is smaller than the corresponding traffic of the offloaded service. The first cache data amount threshold.

Optionally, after step 802, the method further includes: if the UE determines that the data volume of the cached data of the UE is greater than a second cache data volume threshold corresponding to the cached data of the UE, recovering the BSR triggering mechanism of the UE The second buffered data volume threshold may be the same as the first cached data volume threshold or greater than the first cached data volume threshold. Further, the second buffered data amount threshold is determined by the control base station.

Further, if the UE determines that the data volume of the buffered data of the UE is greater than the second buffered data volume threshold corresponding to the buffered data of the UE, the UE may directly restore the BSR triggering mechanism of the UE, or send the current BSR to the base station. After the uplink data, the BSR trigger mechanism of the UE is restored.

FIG. 9 is a schematic block diagram of a user equipment 900 in accordance with an embodiment of the present invention. User equipment 900 can include a comparison unit 901 and a transmission unit 902.

The comparing unit 901 compares the data amount of the buffered data of the user equipment 900 with the first buffered data amount threshold corresponding to the cached data of the user equipment 900.

The sending unit 902 is configured to: if the data volume of the cached data of the user equipment 900 is smaller than the first cached data volume threshold corresponding to the cached data of the user equipment 900, send the low cached data volume indication information to the second base station, where the low cache The data volume indication information is used to indicate that the second base station stops providing uplink scheduling for the user equipment 900.

The user equipment 900 accepts a traffic distribution service of at least two base stations including the first base station and the second base station, where the first base station is used when the data volume of the cached data of the user equipment 900 is smaller than the cached data of the user equipment 900. The user equipment 900 is provided with an uplink scheduling when the corresponding first buffered data amount threshold.

In the embodiment of the present invention, the user equipment 900 compares the data amount of the cached data of the user equipment 900 with the first cached data amount threshold corresponding to the cached data of the user equipment 900, and the data amount of the cached data in the user equipment 900 is less than The first cached data corresponding to the cached data of the user equipment 900 The threshold value indicates that the second base station stops providing uplink scheduling for the UE, avoids waste of base station resource scheduling, and improves resource utilization efficiency.

Optionally, the first base station is a control base station, or the second base station is the control base station; wherein the control base station is a base station of the at least two base stations responsible for managing mobility of the user equipment 900.

Optionally, the user equipment 900 may further include a receiving unit 903, and the first buffered data volume threshold may be received, where the first buffered data volume threshold is sent by the control base station.

Optionally, the first base station is a predetermined base station; or the base station determined by the first base station to notify the user equipment 900 by the control base station; or the base station selected by the first base station for the user equipment 900. Optionally, the sending unit 902 can directly send the low buffered data amount indication information to the second base station. Alternatively, the sending unit 902 may send the low buffered data amount indication information to the second base station by using the first base station; or, the sending unit 902 may directly send the low buffered data amount indication information to the first base station and the second base station.

Optionally, as an embodiment, the data volume of the cached data of the user equipment 900 is the data volume of the cached data of all the first services of the user equipment 900. The first buffered data amount threshold is a data volume threshold of the cached data of all the first services of the user equipment 900. The data amount of the cached data of the user equipment 900 is smaller than the first cached data amount threshold corresponding to the cached data of the user equipment 900. The data amount of the cached data of all the first services of the user equipment 900 is smaller than the first cached data amount. Threshold. The first service is a traffic offload service, or the first service includes a traffic offload service and a non-offload traffic service.

Optionally, as another embodiment, the data volume of the cache data of the user equipment 900 is the data volume of the cache data of a first logical channel group LCG of the user equipment 900. The threshold value of the first buffered data is a threshold value of the data volume corresponding to the first LCG, and the threshold value of the first cached data corresponding to each first LCG is the same or different. The data amount of the cache data of the user equipment 900 is smaller than the first cache data amount threshold corresponding to the cache data of the user equipment 900. The data volume of the cache data of each first LCG of the user equipment 900 is smaller than the corresponding number of the LCG. A cached data threshold. The first LCG is an LCG that includes a traffic offload service, or the first LCG includes a component. The LCG of the streaming service and the LCG that does not include the offloading service.

Optionally, as another embodiment, the data volume of the cached data of the user equipment 900 is the data volume of the cached data of one offload service of the user equipment 900. The first buffered data volume threshold is a data volume threshold corresponding to a traffic splitting service, and the first cached data threshold corresponding to each traffic splitting service is the same or different. The data amount of the cached data of the user equipment 900 is smaller than the first cached data amount threshold corresponding to the cached data of the user equipment 900. The data volume of the cached data of each of the split services of the user equipment 900 is smaller than that of the split service. A cached data threshold. Optionally, the low cache data amount indication information may be represented by a BSR whose cache data is zero. Alternatively, the low buffered data amount indication information may be represented by a control element of the medium access control layer. Alternatively, the low buffer data indication information may be represented by a subheader of the medium access control layer. Alternatively, the low buffered data amount indication information may be represented by physical layer indication information.

Optionally, the sending unit 902 may further send a first buffer status report BSR to the first base station, the receiving unit 903 may further receive the uplink scheduling information sent by the first base station, and the sending unit 902 may further send the first scheduling information according to the uplink scheduling information. The second base station sends the first uplink data of the user equipment 900.

Further, if the user equipment 900 sends the uplink data to the second base station after transmitting the first uplink data to the first base station, the user equipment 900 sends the uplink data to the second base station. Carrying the second BSR of the user equipment 900, so that the first base station learns the current BSRo of the user equipment 900.

Optionally, the comparing unit 901 may further compare the data volume of the cached data of the user equipment 900 with the cached data of the user equipment 900 by the second cached data gate after the second base station stops providing the uplink scheduling for the user equipment 900. The limit value, wherein the second buffered data amount threshold is the first cached data amount threshold, or the second cached data threshold is greater than the first cached data threshold. Further, the second buffered data amount threshold is determined by the control base station. Further, as an embodiment, the sending unit 902 is further configured to send, to the first base station, if the data volume of the cached data of the user equipment 900 is less than the second buffered data volume threshold corresponding to the cached data of the user equipment 900. Uplink scheduling request information, not sending uplink adjustment to the second base station Request information or BSR information.

Or, further, as another embodiment, the sending unit 902 is further configured to: if the data amount of the cached data of the user equipment 900 at present is smaller than the second cached data amount threshold corresponding to the cached data of the user equipment 900, A base station sends uplink scheduling request information, and sends indication information indicating that the buffered data amount is 0 or indication information indicating that the first base station transmits the cached data of the user equipment to the second base station.

Further, the user equipment 900 may further include a recovery unit 904, which may be used if the amount of data of the cached data of the user equipment 900 in the user equipment 900 is greater than the second cached data amount threshold corresponding to the cached data of the user equipment 900, Then, the BSR trigger mechanism and/or the data offload transmission mechanism of the second base station to the user equipment 900 are restored.

Further, the recovery unit 904 is specifically applicable to the case where the data amount of the cache data of the user equipment 900 is greater than the second cache data amount threshold corresponding to the cache data of the user equipment 900 in the user equipment 900 and the duration is greater than or equal to The predetermined time value, the user equipment 900 restores the BSR trigger mechanism and/or the data offload transmission mechanism of the second base station to the user equipment 900. Further, the predetermined time value is determined by the control base station.

Further, as an embodiment, the recovery unit 904 is specifically configured to send, by using the sending unit 902, scheduling request information to the second base station, to trigger the second base station to provide uplink scheduling for the user equipment 900.

Or, further, as another embodiment, the recovery unit 904 is specifically configured to send, by the sending unit 902, the indication information that the data amount of the cache data of the user equipment 900 is greater than the threshold value of the second cache data amount to the first base station, Therefore, the first base station notifies the second base station to participate in uplink scheduling of the user equipment 900.

Or, further, as another embodiment, the recovery unit 904 is specifically configured to send, by the sending unit 902, information to the first base station requesting the second base station to assist scheduling, so that the first base station notifies the second base station to participate in the user. Upstream scheduling of device 900.

Alternatively, further, as another embodiment, the recovery unit 904 can be connected by the receiving unit 903. And receiving the uplink scheduling recovery indication information sent by the first base station, and recovering the uplink scheduling of the second base station according to the uplink scheduling recovery indication information. The uplink scheduling recovery indication information carries information that the second base station resumes uplink scheduling participating in the UE.

Further, the sending unit 902 can send the BSR information to the control base station, and does not send the BSR information to the base station other than the control base station in the at least two base stations.

The user equipment 900 can also implement the method for transmitting data of the UE in FIG. 1, FIG. 2a, FIG. 2b, and FIG. 2c, and implement the functions of the UE in the embodiments in FIG. 1, FIG. 2a, FIG. 2b, and FIG. 2c, where the present invention is No longer.

Figure 10 is a schematic block diagram of a base station 1 000 in accordance with an embodiment of the present invention. The base station 1 000 can include a receiving unit 1 001 and a scheduling unit 1 002.

The receiving unit 1 001 can receive the low buffer data amount indication information of the UE. The low buffered data volume indication information is used to indicate that the data volume of the buffered data of the UE is lower than a buffered data volume threshold corresponding to the cached data of the UE, and the low cached data volume indication information is sent by the UE or the The low buffered data amount indication information is transmitted by the first base station.

The scheduling unit 1 002 may stop providing uplink scheduling for the UE according to the low buffer data amount indication information. The UE receives a traffic distribution service of at least two base stations, including the first base station and the base station, where the first base station is configured to: when the data volume of the cached data of the UE is smaller than the first cache corresponding to the cached data of the UE. The data volume threshold provides uplink scheduling for the UE.

In the embodiment of the present invention, the base station 1 000 receives the low buffer data amount indication information of the UE, and stops providing the uplink scheduling for the UE according to the low buffer data quantity indication information, thereby avoiding the waste of the base station resource scheduling and improving the resource utilization efficiency.

Optionally, when the low buffered data amount indication information is sent by the first base station, the low buffered data amount indication information is sent by the first base station to the second base station by using an interface between the first base station and the second base station.

Optionally, as an embodiment, the receiving unit 1 001 may further receive recovery scheduling indication information sent by the UE, where the recovery scheduling indication information indicates that the base station 1 000 resumes providing uplink scheduling for the UE. Alternatively, optionally, as another embodiment, the receiving unit 1 001 may further receive the first base station The resume scheduling indication information is sent, and the recovery scheduling indication information indicates that the base station 1000 resumes providing uplink scheduling for the UE.

The base station 1000 can also implement the method for transmitting data of the second base station in FIG. 2a, FIG. 2b, and FIG. 2c, and implement the functions of the embodiment of the second base station in FIG. 2a, FIG. 2b, and FIG. 2c, and the present invention will not be described herein. . Figure 11 is a schematic block diagram of a base station 1100 in accordance with an embodiment of the present invention. The base station 1100 can include a comparison unit 1101 and a transmission unit 1102.

The comparing unit 1101 is configured to compare the data amount of the buffered data of the user equipment UE with the first buffered data amount threshold corresponding to the cached data of the UE.

The sending unit 1102 is configured to: if the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE, send the low cached data volume indication information to the second base station, where the low cached data volume The indication information is used to indicate that the second base station stops providing uplink scheduling for the UE. The UE receives the offloading service of the at least two base stations, including the base station 1100 and the second base station, and the base station 1100 is configured to: when the data volume of the cached data of the UE is smaller than the first cached data volume corresponding to the cached data of the UE. The UE provides uplink scheduling for the limit.

In the embodiment of the present invention, the base station 1100 compares the data volume of the buffered data of the UE with the first buffered data volume threshold corresponding to the cached data of the UE, and indicates, according to the comparison result, that the second base station stops providing uplink scheduling for the UE. Avoid waste of base station resource scheduling and improve resource utilization efficiency. Optionally, the comparing unit 1101 may further compare, when receiving the BSR of the UE, a data volume of the cached data of the UE and a first buffered data volume threshold corresponding to the cached data of the UE.

Optionally, the comparing unit 1101 is further configured to compare the data volume of the cached data of the UE with the first cached data volume threshold corresponding to the cached data of the UE when the uplink scheduling is provided for the UE.

Optionally, the base station 1100 is a control base station, or the second base station is a control base station; wherein the control base station is a base station of the at least two base stations responsible for managing mobility of the UE.

Optionally, the first buffered data volume threshold is a predetermined threshold or a threshold value determined by the control base station.

Optionally, the low cache data amount indication information may be represented by a BSR whose cache data is zero. Or, that The low buffered data amount indication information may be represented by a control element of the medium access control layer. Alternatively, the low buffered data amount indication information may be represented by a subheader of the medium access control layer. Alternatively, the low buffered data amount indication information may be represented by physical layer indication information.

Optionally, the sending unit 1 102 may further send first indication information to the UE, where the first indication information includes information that the second base station stops providing uplink scheduling for the UE.

Optionally, the sending unit 1102 can also be used to: if the data quantity of the buffered data of the UE in the UE is greater than the second buffered data quantity threshold corresponding to the cached data of the UE, the base station 1 1 00 The second base station sends the recovery scheduling indication information, where the recovery scheduling indication information is used to indicate that the second base station resumes providing uplink scheduling for the UE. The second buffered data amount threshold may be the same as the first cached data threshold or different from the first cached data threshold. The second buffered data amount threshold is a predetermined threshold or a threshold determined by the control base station.

It should be noted that, when the first base station sends the scheduling indication information or the recovery scheduling indication information to the second base station, the second base station may also indicate the transmission rate or the QoS required to be guaranteed, so that the second base station can Provide the UE with a service that determines quality.

Further, the sending unit 1 102 may further send second indication information to the UE, where the second indication information includes information that the second base station resumes providing uplink scheduling for the UE.

Optionally, as an embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of all the first services of the UE; the first cached data volume threshold is all the first services of the UE. The data volume threshold of the cached data; the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE, and the data volume of the cached data of all the first services of the UE is smaller than The first cache data amount threshold. The first service is a traffic distribution service, or the first service includes a traffic distribution service and a non-offload service.

Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of each first logical channel group LCG of the UE; the first cached data volume threshold is a data volume threshold corresponding to the first LCG, the threshold value of the first cache data corresponding to each first LCG is the same or different; the data volume of the cached data of the UE is smaller than the cached data pair of the UE The first cached data volume threshold may include: the data amount of the cache data of each first LCG of the UE is smaller than the first cache data volume threshold corresponding to the LCG. The first LCG is an LCG that includes a traffic distribution service, or the first LCG includes an LCG that includes a traffic distribution service and an LCG that does not include a traffic distribution service.

Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the buffered data of each of the offloaded services of the UE; the first cached data volume threshold is corresponding to each of the traffic offload services. The threshold value of the data volume, the threshold value of the first cache data corresponding to each of the split services is the same or different; the data volume of the cached data of the UE is smaller than the first cache data threshold corresponding to the cached data of the UE. The data volume of the buffered data of each of the offloaded services of the UE is smaller than the first cached data volume threshold corresponding to the offloaded service.

The base station 1100 may further include a receiving unit 1103, and if the base station 1100 is a control base station, the receiving unit receives the BSR information sent by the UE. If the base station 1100 is not the control base station, the receiving unit does not receive the BSR information sent by the UE.

The base station 1100 can also implement the method for transmitting data by the first base station in FIG. 4, FIG. 5a, FIG. 5b, and FIG. 5c, and implement the functions of the first base station in the embodiments in FIG. 4, FIG. 5a, FIG. 5b, and FIG. The invention will not be described again here.

Figure 12 is a schematic block diagram of a base station 1200 in accordance with an embodiment of the present invention. Base station 1200 can include comparison unit 1201 and scheduling unit 1202.

The comparing unit 1201 compares the data amount of the buffered data of the user equipment UE with the first buffered data amount threshold corresponding to the cached data of the UE.

The scheduling unit 1202 is configured to: if the data volume of the buffered data of the UE is smaller than a first buffered data volume threshold corresponding to the cached data of the UE, the base station 1200 stops providing uplink scheduling for the UE. The UE receives a traffic distribution service of at least two base stations, including the base station 1200 and the second base station, where the second base station is configured to: when the data volume of the cached data of the UE is smaller than the first cache corresponding to the cached data of the UE, The data volume threshold provides uplink scheduling for the UE.

In the embodiment of the present invention, the base station 1200 compares the data amount of the cached data of the UE with the UE. The first buffered data volume threshold corresponding to the cached data is used, and the uplink scheduling is stopped for the UE according to the comparison result, thereby avoiding waste of the base station resource scheduling and improving the resource utilization efficiency.

Optionally, the comparing unit 1 201 may compare the data volume of the cached data of the UE with the first buffered data volume threshold corresponding to the cached data of the UE when receiving the BSR of the UE.

Optionally, the comparing unit 1 201 may compare the data volume of the cached data of the UE with the first cached data volume threshold corresponding to the cached data of the UE when the uplink scheduling is provided for the UE.

Optionally, the base station 1 200 is a control base station, or the second base station is the control base station. The control base station is a base station of the at least two base stations responsible for managing mobility of the UE.

Optionally, the first buffered data volume threshold is a predetermined threshold or a threshold value determined by the control base station.

Optionally, the base station 1 200 may further include a transmitting unit 1 203. The sending unit 1 203 may send the low buffered data amount indication information to the second base station, where the data volume of the cached data carrying the UE is smaller than the first cached data threshold corresponding to the cached data of the UE. Value information. Optionally, the low cache data amount indication information may be represented by a BSR whose cache data is zero. Alternatively, the low buffered data amount indication information may be represented by a control element of the medium access control layer. Alternatively, the low buffer data indication information may be represented by a subheader of the medium access control layer. Alternatively, the low buffered data amount indication information may be represented by physical layer indication information.

Alternatively, base station 1 200 may further include receiving unit 1 204 and recovery unit 1 205. The receiving unit 1 204 may receive the recovery scheduling indication information sent by the second base station. The recovery unit 1 205 may resume providing the uplink scheduling for the UE according to the recovery scheduling indication information.

Optionally, as an embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of all the first services of the UE; the first cached data volume threshold is all the first services of the UE. The data volume threshold of the cached data; the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE, and the data volume of the cached data of all the first services of the UE is smaller than The first cache data amount threshold. The first service is a traffic distribution service, or the first service includes a traffic distribution service and a non-offload service. Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of each first logical channel group LCG of the UE; the first cached data volume threshold is a threshold value of the data volume corresponding to the first LCG, the threshold value of the first cache data corresponding to each first LCG is the same or different; the data volume of the cached data of the UE is smaller than the first corresponding to the cached data of the UE The buffered data volume threshold may include: the data amount of the cache data of each first LCG of the UE is smaller than the first cache data volume threshold corresponding to the LCG. The first LCG is an LCG that includes a traffic distribution service, or the first LCG includes an LCG that includes a traffic distribution service and an LCG that does not include a traffic distribution service.

Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the buffered data of each of the offloaded services of the UE; the first cached data volume threshold is corresponding to each of the traffic offload services. The threshold value of the data volume, the threshold value of the first cache data corresponding to each of the split services is the same or different; the data volume of the cached data of the UE is smaller than the first cache data threshold corresponding to the cached data of the UE. The data volume of the buffered data of each of the offloaded services of the UE is smaller than the first cached data volume threshold corresponding to the offloaded service.

The base station 1 200 can also implement the method for transmitting data by the first base station in FIG. 6, FIG. 7a, FIG. 7b, and FIG. 7c, and implement the functions of the first base station in the embodiments in FIG. 6, FIG. 7a, FIG. 7b, and FIG. 7c. The invention is not described herein again.

FIG. 13 is a schematic block diagram of a user equipment 1 300 according to an embodiment of the present invention. User equipment 1 300 can include comparison unit 1 301 and transmission unit 1 302.

The comparing unit 1 301 can compare the data amount of the cached data of the user equipment 1 300 with the first buffered data amount threshold corresponding to the cached data of the user equipment 1 300.

The sending unit 1 302 is configured to: if the data volume of the cached data of the user equipment 1 300 is smaller than the first cache data amount threshold corresponding to the cached data of the user equipment 1 300, the user equipment 1 300 sends the carrying user equipment 1 300 to the base station. The uplink data of the BSR, the user equipment 1 300 accepts the offloading service of at least two base stations including the base station 1 200.

In the embodiment of the present invention, the user equipment 1 300 compares the data of the cached data of the user equipment 1 300. The first cache data amount threshold corresponding to the cache data of the user equipment 1 300, and the data amount of the cache data in the user equipment 1 300 is smaller than the first cache data amount threshold corresponding to the cache data of the user equipment 1 300. Each time the uplink data is sent, the current BSR information of the user equipment 1 300 is carried, so that the scheduled base station can know the buffer condition of the user equipment 1 300 in time, avoid over-scheduling, and reduce waste of scheduling resources.

Optionally, the first buffered data volume threshold is a threshold that may be a predetermined threshold or a threshold determined by the control base station. The control base station is a base station of the at least two base stations responsible for managing the mobility of the UE. The predetermined threshold value may be specified by the agreement, or other conditions, and the invention is not limited herein. There are various ways for the control base station to determine the threshold value of the first cached data. The present invention is not limited thereto.

Optionally, as an embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of all the first services of the UE; the first cached data volume threshold is all the first services of the UE. The data volume threshold of the cached data; the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the cached data of the UE, and the data volume of the cached data of all the first services of the UE is smaller than The first cache data amount threshold. The first service is a traffic distribution service, or the first service includes a traffic distribution service and a non-offload service.

Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of each first logical channel group LCG of the UE; the first cached data volume threshold is a threshold value of the data volume corresponding to the first LCG, the threshold value of the first cache data corresponding to each first LCG is the same or different; the data volume of the cached data of the UE is smaller than the first corresponding to the cached data of the UE The buffered data volume threshold may include: the data amount of the cache data of each first LCG of the UE is smaller than the first cache data volume threshold corresponding to the LCG. The first LCG is an LCG that includes a traffic distribution service, or the first LCG includes an LCG that includes a traffic distribution service and an LCG that does not include a traffic distribution service.

Or, optionally, as another embodiment, the data volume of the buffered data of the UE is the data volume of the buffered data of each of the offloaded services of the UE; the first cached data volume threshold is each of the splits The data volume threshold corresponding to the service, the threshold value of the first cache data corresponding to each of the traffic off services is the same or different; the data volume of the cached data of the UE is smaller than the first cache data gate corresponding to the cached data of the UE The limit value may include: the data volume of the buffered data of each of the offloaded services of the UE is smaller than the first cached data volume threshold corresponding to the offloaded service.

Optionally, the user equipment 1 300 may include a recovery unit 1 303, if the user equipment 1 300 determines that the data volume of the cache data of the user equipment 1 300 is not less than the second cache data threshold corresponding to the cache data of the user equipment 1 300. Value, then recovery unit 1 303 can resume the BSR trigger mechanism. The second buffered data amount threshold is the first cached data amount threshold, or the second cached data threshold is greater than the first cached data threshold. Further, the second buffered data amount threshold is determined by the control base station.

Optionally, if the user equipment 1 300 determines that the data volume of the cache data of the user equipment 1 300 is greater than the second cache data volume threshold corresponding to the cache data of the user equipment 1 300, the BSR trigger mechanism of the user equipment 1 300 may be directly restored. After the uplink data carrying the current BSR is sent to the base station, the BSR triggering mechanism of the user equipment 1 300 is restored.

The user equipment 1 300 can also implement the method for the user equipment to transmit data in FIG. 8 to implement the functions of the user equipment in the embodiment in FIG. 8. The present invention is not described herein again.

Figure 14 is a schematic block diagram of user equipment 1400 in accordance with an embodiment of the present invention. User equipment 1400 can include transmit circuitry 1401, processor 1402, and memory 1403.

The processor 1 402 compares the data amount of the buffered data of the user equipment 1400 with the first cached data amount threshold corresponding to the cached data of the user equipment 1400.

The memory 1403 may store an instruction for causing the processor 1402 to compare the data amount of the cached data of the user equipment 1 400 with the first buffered data amount threshold corresponding to the cached data of the user equipment 1400. The processor 1402 is operative to be driven by the memory 1 403.

The transmitting circuit 1401 is configured to: if the data volume of the buffered data of the user equipment 1400 is smaller than the first buffered data volume threshold corresponding to the buffered data of the user equipment 1400, send the low cached data volume indication information to the second base station, where the low cache The data amount indication information is used to indicate that the second base station stops serving The subscriber device 1400 provides uplink scheduling.

The user equipment 1400 accepts a traffic offload service of at least two base stations including the first base station and the second base station, where the first base station is used when the data volume of the cached data of the user equipment 1400 is smaller than the cached data of the user equipment 1400. The user equipment 1400 is provided with an uplink scheduling when the corresponding first buffered data amount threshold.

In the embodiment of the present invention, the user equipment 1400 compares the data amount of the cache data of the user equipment 1 400 with the first cache data amount threshold corresponding to the cache data of the user equipment 1400, and the data amount of the cache data of the user equipment 1400. When the threshold value of the first buffered data corresponding to the buffered data of the user equipment 1400 is less than that, the second base station stops the uplink scheduling for the UE, avoids the waste of the base station resource scheduling, and improves the resource utilization efficiency.

In addition, user equipment 1400 may also include receiving circuitry 1404 and the like. The processor 1402 controls the operation of the user equipment 1400, which may also be referred to as a CPU (Centra l Process i ng Un i t , central processing unit). Memory 1 403 can include read only memory and random access memory and provides instructions and data to processor 1402. A portion of memory 1 403 may also include non-volatile random access memory (NVRAM). In a particular application, transmit circuitry 1401 and receive circuitry 1404 can be coupled to antenna 1405. The various components of user equipment 1400 are coupled together by a bus system 1406, which may include, in addition to the data bus, a power bus, a control bus, a status signal bus, and the like. However, for clarity of description, various buses are labeled as bus system 1406 in the figure.

The method disclosed in the foregoing embodiments of the present invention may be applied to the processor 1402 or implemented by the processor 1402. Processor 1402 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 1402 or an instruction in a form of software. The processor 1402 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (AS IC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or a transistor logic device, and a discrete Hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or executed. General office The processor can be a microprocessor or the processor can be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 1403, and the processor 1402 reads the information in the memory 1403, and completes the steps of the above method in combination with the hardware thereof.

Optionally, the first base station is a control base station, or the second base station is the control base station; wherein the control base station is a base station of the at least two base stations responsible for managing mobility of the user equipment 1400. Optionally, the receiving circuit 1404 can receive the first buffered data amount threshold, where the first buffered data threshold is sent by the control base station.

Optionally, the first base station is a predetermined base station; or the base station that the first base station determines for the control base station and notifies the user equipment 1400; or the first base station is the base station selected by the user equipment 1400.

Optionally, the transmitting circuit 1401 may directly send the low buffered data amount indication information to the second base station. Alternatively, the transmitting circuit 1401 may send the low buffered data amount indication information to the second base station by using the first base station; or, the transmitting circuit 1401 may directly send the low buffered data amount indication information to the first base station and the second base station. .

Optionally, as an embodiment, the data volume of the cached data of the user equipment 1400 is the data volume of the cached data of all the first services of the user equipment 1400. The first buffered data amount threshold is a data volume threshold of the cached data of all the first services of the user equipment 1400. The data volume of the cached data of the user equipment 1400 is smaller than the first cached data amount threshold corresponding to the cached data of the user equipment 1400. The data volume of the cached data of all the first services of the user equipment 1400 is smaller than the first cached data volume. Limit. The first service is a traffic offload service, or the first service includes a traffic offload service and a non-offload traffic service.

Optionally, as another embodiment, the data volume of the cache data of the user equipment 1400 is the data volume of the cache data of a first logical channel group LCG of the user equipment 1400. The first cached data The threshold value is a data volume threshold corresponding to the first LCG, and the first cache data threshold corresponding to each first LCG is the same or different. The data volume of the cache data of the user equipment 1400 is smaller than the first cache data volume threshold corresponding to the cache data of the user equipment 1400. The data volume of the cache data of each first LCG of the user equipment 1400 is smaller than the first corresponding to the LCG. Cache data volume threshold. The first LCG is an LCG that includes a traffic distribution service, or the first LCG includes an LCG that includes a traffic distribution service and an LCG that does not include a traffic distribution service.

Optionally, as another embodiment, the data volume of the cached data of the user equipment 1400 is the data volume of the cached data of one offload service of the user equipment 1400. The first buffered data volume threshold is a data volume threshold corresponding to a traffic splitting service, and the first cache data threshold corresponding to each traffic splitting service is the same or different. The data volume of the cached data of the user equipment 1400 is smaller than the first cached data amount threshold corresponding to the cached data of the user equipment 1400. The data volume of the cached data of each of the split services of the user equipment 1400 is smaller than the first corresponding to the split service. Cache data volume threshold.

Optionally, the low cache data amount indication information may be represented by a BSR whose cache data is zero. Alternatively, the low buffered data amount indication information may be represented by a control element of the medium access control layer. Alternatively, the low buffer data indication information may be represented by a subheader of the medium access control layer. Alternatively, the low buffered data amount indication information may be represented by physical layer indication information.

Optionally, the transmitting circuit 1401 may further send a first buffer status report BSR to the first base station, and the receiving circuit 1404 may further receive the uplink scheduling information sent by the first base station, where the transmitting circuit 1401 may further send the first scheduling information according to the uplink scheduling information. The second base station sends the first uplink data of the user equipment 1400.

Further, if the user equipment 1400 sends the uplink data to the second base station after sending the first uplink data to the first base station, and then sending the uplink data to the second base station, the first uplink data is sent by the user equipment 1400. Carrying the second BSR of the user equipment 1400, so that the first base station learns the current BSRo of the user equipment 1400.

Optionally, the processor 1402 may further compare the data volume of the cached data of the user equipment 1400 with the cache of the user equipment 1400 after the second base station stops providing the uplink scheduling for the user equipment 1400. a second cache data volume threshold corresponding to the data, where the second cache data volume threshold is the first cache data volume threshold, or the second cache data threshold is greater than the first cache The value of the data volume threshold. Further, the second buffered data amount threshold is determined by the control base station. Further, as an embodiment, the transmitting circuit 1401 is further configured to send, to the first base station, if the data volume of the buffered data of the user equipment 1400 is less than the second buffered data volume threshold corresponding to the buffered data of the user equipment 1400. The uplink scheduling request information does not send uplink scheduling request information or BSR information to the second base station.

Or, further, as another embodiment, the transmitting circuit 1401 is further configured to: if the data amount of the cache data of the user equipment 1400 at present is smaller than the second buffer data amount threshold corresponding to the cache data of the user equipment 1400, A base station sends uplink scheduling request information, and sends indication information indicating that the buffered data amount is 0 or indication information indicating that the first base station transmits the cached data of the user equipment to the second base station.

Further, the processor 1402 may be configured to resume the BSR triggering mechanism if the data amount of the cached data of the user equipment 1400 in the user equipment 1400 is greater than the second cached data amount threshold corresponding to the cached data of the user equipment 1400. And/or a data offload transmission mechanism of the second base station to the user equipment 1400.

Further, the processor 1402 is specifically configured to: if the amount of data of the cached data of the user equipment 1 400 is greater than the second cached data amount threshold corresponding to the cached data of the user equipment 1400, and the duration of the processor is greater than Or equal to the predetermined time value, the user equipment 1 400 restores the BSR trigger mechanism and/or the data offload transmission mechanism of the second base station to the user equipment 1400. Further, the predetermined time value is determined by the control base station.

Further, as an embodiment, the processor 1402 is specifically configured to send, by using the transmitting circuit 1401, scheduling request information to the second base station, to trigger the second base station to provide uplink scheduling for the user equipment 1400.

Or, further, as another embodiment, the processor 1402 is specifically configured to send, by using the transmitting circuit 1401, the data volume of the cache data of the user equipment 1400 to the first base station is greater than the second cache. The indication information of the data quantity threshold, so that the first base station notifies the second base station to participate in the user equipment

Upstream scheduling of 1400.

Or, further, as another embodiment, the processor 1402 is specifically configured to send, by the transmitting circuit 1401, information to the first base station requesting the second base station to assist scheduling, so that the first base station notifies the second base station to participate in the user. Upstream scheduling of device 1400.

Or, further, as another embodiment, the processor 1402 receives the uplink scheduling recovery indication information sent by the first base station by using the receiving circuit 1404, and resumes receiving the uplink scheduling of the second base station according to the uplink scheduling recovery indication information. The uplink scheduling recovery indication information carries information that the second base station resumes uplink scheduling participating in the UE.

Further, the transmitting circuit 1401 is configured to send BSR information to the control base station, and does not send BSR information to a base station other than the control base station in the at least two base stations.

The user equipment 1400 can also implement the method for transmitting data of the UE in FIG. 1, FIG. 2a, FIG. 2b, and FIG. 2c, and implement the functions of the UE in the embodiments in FIG. 1, FIG. 2a, FIG. 2b, and FIG. 2c, where the present invention is No longer.

Figure 15 is a schematic block diagram of a base station 1 500 in accordance with an embodiment of the present invention. Base station 1 500 can include receive circuitry 1504, processor 1502, and memory 1503.

The receiving circuit 1504 can receive the low buffered data amount indication information of the UE. The low buffered data volume indication information is used to indicate that the data volume of the buffered data of the UE is lower than a buffered data volume threshold corresponding to the cached data of the UE, and the low cached data volume indication information is sent by the UE or the The low buffered data amount indication information is transmitted by the first base station.

The processor 1502 may stop providing uplink scheduling for the UE according to the low buffered data amount indication information. The UE receives a traffic distribution service of at least two base stations, including the first base station and the base station, where the first base station is configured to: when the data volume of the cached data of the UE is smaller than the first cache corresponding to the cached data of the UE. The data volume threshold provides uplink scheduling for the UE.

The memory 1503 may store an instruction that causes the processor 1502 to stop providing uplink scheduling for the UE according to the low buffered data amount indication information. The processor 1502 is configured to be driven by the memory 1503 jobs.

In the embodiment of the present invention, the base station 1500 receives the low buffer data amount indication information of the UE, and stops providing the uplink scheduling for the UE according to the low buffer data quantity indication information, thereby avoiding the waste of the base station resource scheduling and improving the resource utilization efficiency.

Further, the base station 1500 may further include a transmitting circuit 1 501 and the like. The processor 1502 controls the operation of the base station 1500, and the processor 1502 may also be referred to as a CPU (Centra l Process i ng Un it, central processing unit). Memory 1 503 can include read only memory and random access memory and provides instructions and data to processor 1502. A portion of the memory 1503 may also include non-volatile random access memory (NVRAM). In a particular application, transmit circuitry 1501 and receive circuitry 1504 can be coupled to antenna 1505. The various components of the base station 1500 are coupled together by a bus system 1506, which may include, in addition to the data bus, a power bus, a control bus, a status signal bus, and the like. However, for clarity of description, various buses are labeled as a bus system in the figure. The method disclosed in the above embodiments of the present invention may be applied to the processor 1502 or implemented by the processor 1502. The processor 1502 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1502 or an instruction in a form of software. The processor 1502 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (AS IC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or a transistor logic device, and a discrete Hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 1503. The processor 1502 reads the information in the memory 1503 and completes the steps of the above method in combination with hardware. Optionally, when the low buffered data volume indication information is sent by the first base station, the low buffered data volume indication information is sent by the first base station to the second base station by using an interface between the first base station and the second base station.

Optionally, as an embodiment, the receiving circuit 1504 may further receive recovery scheduling indication information sent by the UE, where the recovery scheduling indication information indicates that the base station 1500 resumes providing uplink scheduling for the UE. Alternatively, as another embodiment, the receiving circuit 1504 may further receive recovery scheduling indication information sent by the first base station, where the recovery scheduling indication information indicates that the base station 1500 resumes providing uplink scheduling for the UE.

The base station 1500 can also implement the method for transmitting data of the second base station in FIG. 2a, FIG. 2b, and FIG. 2c, and implement the functions of the embodiment of the second base station in FIG. 2a, FIG. 2b, and FIG. 2c, and the present invention will not be described herein. . Figure 16 is a schematic block diagram of a base station 1600 in accordance with an embodiment of the present invention. Base station 1600 can include 1600 can include transmit circuitry 1601, processor 1602, and memory 1603.

The processor 1602 compares the data amount of the buffered data of the user equipment UE with the first buffered data volume threshold corresponding to the cached data of the UE.

The transmitting circuit 1601 is configured to: if the data volume of the buffered data of the UE is smaller than the first buffered data volume threshold corresponding to the buffered data of the UE, send the low cached data volume indication information to the second base station, where the low cached data volume The indication information is used to indicate that the second base station stops providing uplink scheduling for the UE. The UE receives the offloading service of the at least two base stations including the base station 1600 and the second base station, and the base station 1600 is configured to: when the data volume of the buffered data of the UE is smaller than the first cached data volume corresponding to the cached data of the UE The UE provides uplink scheduling for the limit.

In the embodiment of the present invention, the base station 1600 compares the data volume of the buffered data of the UE with the first buffered data volume threshold corresponding to the cached data of the UE, and instructs the second base station to stop providing uplink scheduling for the UE according to the comparison result. Avoid waste of base station resource scheduling and improve resource utilization efficiency. Further, the base station 1600 may further include a receiving circuit 1604 and the like. The processor 1602 controls the operation of the base station 1600, and the processor 1602 may also be referred to as a CPU (Central Processing Unit). The memory 1603 can include read only memory and random access memory and provides instructions and data to the processor 1602. A portion of the memory 1603 may also include non-volatile random access Memory (NVRAM). In a particular application, transmit circuitry 1 601 and receive circuitry 1 604 can be coupled to antenna 1 605. The various components of the base station 1 600 are coupled together by a bus system 1 606, which may include, in addition to the data bus, a power bus, a control bus, a status signal bus, and the like. However, for clarity of description, various buses are labeled as bus system 1 606 in the figure.

The method disclosed in the foregoing embodiments of the present invention may be applied to the processor 1 602 or implemented by the processor 1 602. Processor 1 602 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1 602 or an instruction in the form of software. The processor 1 602 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (AS IC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or a transistor logic device, Discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out. The general purpose processor can be a microprocessor or the processor can be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly embodied by the execution of the hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software modules can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 1 603. The processor 1 602 reads the information in the memory 1 603 and completes the steps of the above method in combination with the hardware.

Optionally, the processor 1 602 may also compare the data volume of the cached data of the UE with the first cached data volume threshold corresponding to the cached data of the UE when receiving the BSR of the UE.

Optionally, the processor 1 602 may also compare the data volume of the cached data of the UE with the first cached data volume threshold corresponding to the cached data of the UE when the uplink scheduling is provided for the UE.

Optionally, the base station 1 600 is a control base station, or the second base station is a control base station; wherein the control base station is a base station of the at least two base stations responsible for managing mobility of the UE.

Optionally, the first buffered data volume threshold is a predetermined threshold or a threshold determined by the control base station. Optionally, the low cache data amount indication information may be represented by a BSR whose cache data is zero. Alternatively, the low buffered data amount indication information may be represented by a control element of the medium access control layer. Alternatively, the low buffered data amount indication information may be represented by a subheader of the medium access control layer. Alternatively, the low buffered data amount indication information may be represented by physical layer indication information.

Optionally, the transmitting circuit 1 601 may further send first indication information to the UE, where the first indication information includes information that the second base station stops providing uplink scheduling for the UE.

Optionally, the transmitting circuit 1 601 is further configured to: if the amount of data of the buffered data of the UE in the UE is greater than a second buffered data volume threshold corresponding to the buffered data of the UE, the base station 1 600 is second. The base station sends the recovery scheduling indication information, where the recovery scheduling indication information is used to indicate that the second base station resumes providing uplink scheduling for the UE. The second buffered data amount threshold may be the same as the first cached data threshold or different from the first cached data threshold. The second buffered data amount threshold is a predetermined threshold or a threshold determined by the control base station.

It should be noted that, when the first base station sends the scheduling indication information or the recovery scheduling indication information to the second base station, the second base station may also indicate the transmission rate or the QoS required to be guaranteed, so that the second base station can Provide the UE with a service that determines quality.

Further, the transmitting circuit 1 601 may further send second indication information to the UE, where the second indication information includes information that the second base station resumes providing uplink scheduling for the UE.

Optionally, as an embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of all the first services of the UE; the first cached data volume threshold is all the first services of the UE. a data volume threshold value of the cached data; the data volume of the buffered data of the UE is smaller than the first cached data volume threshold corresponding to the cached data of the UE, where: the data volume of the cached data of all the first services of the UE is smaller than the The first cached data amount threshold. The first service is a traffic offload service, or the first service includes a traffic offload service and a non-offload traffic service.

Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of each first logical channel group LCG of the UE; the first cached data volume threshold is a data amount threshold corresponding to the first LCG, the first cache number corresponding to each first LCG The threshold value of the data is the same or different; the data volume of the cached data of the UE is smaller than the first cache data threshold corresponding to the cached data of the UE, and the data volume of the cached data of each first LCG of the UE is It is smaller than the first buffer data amount threshold corresponding to the LCG. The first LCG is an LCG that includes a traffic distribution service, or the first LCG includes an LCG that includes a traffic distribution service and an LCG that does not include a traffic distribution service.

Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the buffered data of each of the offloaded services of the UE; the first cached data volume threshold is corresponding to each of the traffic offload services. The threshold value of the data volume, the threshold value of the first cache data corresponding to each of the split services is the same or different; the data volume of the cached data of the UE is smaller than the first cache data threshold corresponding to the cached data of the UE. The data volume of the cached data of each of the offloaded services of the UE is smaller than the first cached data volume threshold corresponding to the offloaded service.

The receiving circuit 1 604 is configured to: if the base station 1 600 is a control base station, the receiving unit receives the BSR information sent by the UE; if the base station 1 600 is not the control base station, the receiving unit does not receive the BSR information sent by the UE.

The base station 1 600 can also implement the method for transmitting data by the first base station in FIG. 4, FIG. 5a, FIG. 5b, and FIG. 5c, and implement the functions of the first base station in the embodiments in FIG. 4, FIG. 5a, FIG. 5b, and FIG. The invention is not described herein again.

Figure 17 is a schematic block diagram of a base station 1 700 in accordance with an embodiment of the present invention. Base station 1 700 can include a processor 1 702 and a memory 1 703.

The processor 1 702 compares the data amount of the buffered data of the user equipment UE with the first buffered data volume threshold corresponding to the cached data of the UE.

If the data amount of the buffered data of the UE is less than the first buffered data amount threshold corresponding to the cached data of the UE, the processor may stop transmitting the uplink scheduling for the UE.

The memory 1 703 may store an instruction that causes the processor 1 702 to compare the data amount of the cache data of the user equipment UE with the first cache data amount threshold corresponding to the cache data of the UE, and store the cache of the processor in the UE. The amount of data of the data is less than the amount of the first cached data corresponding to the cached data of the UE. At the threshold, the instruction to provide uplink scheduling for the UE is stopped.

The UE receives a traffic distribution service of at least two base stations, including the base station 1700 and the second base station, where the second base station is configured to: when the data volume of the cached data of the UE is smaller than the first cache corresponding to the cached data of the UE. The data volume threshold provides uplink scheduling for the UE.

In the embodiment of the present invention, the base station 1700 compares the data volume of the buffered data of the UE with the first buffered data volume threshold corresponding to the cached data of the UE, and stops providing uplink scheduling for the UE according to the comparison result, thereby avoiding base station resource scheduling. Waste, improve the efficiency of resource utilization.

Further, the base station 1700 may further include a transmitting circuit 1701, a receiving circuit 1704, and the like. The processor 1702 controls the operation of the base station 1700, which may also be referred to as a CPU (Central Processing Unit). Memory 1703 can include read only memory and random access memory and provides instructions and data to processor 1702. A portion of the memory 1703 may also include non-volatile random access memory (NVRAM). In a particular application, transmit circuitry 1701 and receive circuitry 1704 can be coupled to antenna 1705. The various components of base station 1700 are coupled together by a bus system 1706, which may include, in addition to the data bus, a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 1706 in the figure.

The method disclosed in the foregoing embodiments of the present invention may be applied to the processor 1702 or implemented by the processor 1702. The processor 1702 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1702 or an instruction in a form of software. The processor 1702 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware. Component. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. Software modules can be located at random Memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers, etc., are well-known storage media in the field. The storage medium is located in the memory 1 703. The processor 1 702 reads the information in the memory 1 703 and completes the steps of the above method in combination with hardware.

Optionally, the processor 1702 may compare the data volume of the cached data of the UE with the first cached data volume threshold corresponding to the cached data of the UE when receiving the BSR of the UE.

Optionally, the processor 1702 may compare the data volume of the cached data of the UE with the first cached data volume threshold corresponding to the cached data of the UE when the uplink scheduling is provided for the UE.

Optionally, the base station 1 700 is a control base station, or the second base station is the control base station. The control base station is a base station of the at least two base stations responsible for managing mobility of the UE.

Optionally, the first buffered data volume threshold is a predetermined threshold or a threshold value determined by the control base station.

Optionally, the transmitting circuit 1701 may send, to the second base station, a low-cache data amount indication information, where the data volume of the cached data carrying the UE is smaller than the first cache corresponding to the cached data of the UE. Information on the data volume threshold.

Optionally, the low cache data amount indication information may be represented by a BSR whose cache data is zero. Alternatively, the low buffered data amount indication information may be represented by a control element of the medium access control layer. Alternatively, the low buffer data indication information may be represented by a subheader of the medium access control layer. Alternatively, the low buffered data amount indication information may be represented by physical layer indication information.

Optionally, the receiving circuit 1704 can receive the recovery scheduling indication information sent by the second base station, and the processor 1702 can resume providing the uplink scheduling for the UE according to the recovery scheduling indication information.

Optionally, as an embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of all the first services of the UE; the first cached data volume threshold is all the first services of the UE. a data volume threshold value of the cached data; the data volume of the buffered data of the UE is smaller than the first cached data volume threshold corresponding to the cached data of the UE, where: the data volume of the cached data of all the first services of the UE is smaller than the The first cached data amount threshold. The first service is a traffic distribution service, or the first service includes a traffic distribution service and a non-offload service. Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of each first logical channel group LCG of the UE; the first cached data volume threshold is a threshold value of the data volume corresponding to the first LCG, the threshold value of the first cache data corresponding to each first LCG is the same or different; the data volume of the cached data of the UE is smaller than the first corresponding to the cached data of the UE The buffered data volume threshold includes: the data amount of the cache data of each first LCG of the UE is smaller than the first cache data volume threshold corresponding to the LCG. The first LCG is an LCG that includes a traffic distribution service, or the first LCG includes an LCG that includes a traffic distribution service and an LCG that does not include a traffic distribution service.

Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the buffered data of each of the offloaded services of the UE; the first cached data volume threshold is corresponding to each of the traffic offload services. The threshold value of the data volume, the threshold value of the first cache data corresponding to each of the split services is the same or different; the data volume of the cached data of the UE is smaller than the first cache data threshold corresponding to the cached data of the UE. The data volume of the cached data of each of the offloaded services of the UE is smaller than the first cached data volume threshold corresponding to the offloaded service.

The base station 1700 can also implement the method for transmitting data by the first base station in FIG. 6, FIG. 7a, FIG. 7b, and FIG. 7c, and implement the functions of the first base station in the embodiments in FIG. 6, FIG. 7a, FIG. 7b, and FIG. 7c. The invention is not described herein again.

FIG. 18 is a schematic block diagram of user equipment 1800 in accordance with an embodiment of the present invention. User equipment 1800 can include transmit circuitry 1801, processor 1802, and memory 1803.

The processor 1802 can compare the data amount of the cached data of the user equipment 1800 with the first cached data amount threshold corresponding to the cached data of the user equipment 1800.

The memory 1803 can store an instruction that causes the processor 1802 to compare the amount of data of the cached data of the user equipment 1 800 with the first buffered data amount threshold corresponding to the cached data of the user equipment 1800.

The transmitting circuit 1801 is configured to: if the data volume of the buffered data of the user equipment 1800 is smaller than the first buffered data volume threshold corresponding to the buffered data of the user equipment 1800, send the uplink data of the BSR that carries the user equipment 1800 to the base station, where User equipment 1800 accepts that base station 1 200 is included A shunt service for at least two base stations within.

In the embodiment of the present invention, the user equipment 1800 compares the data volume of the cached data of the user equipment 1 800 with the first cached data amount threshold corresponding to the cached data of the user equipment 1800, and the data amount of the cached data of the user equipment 1800. When the threshold value of the first cache data corresponding to the cached data of the user equipment 1800 is smaller, the uplink data of the user equipment 1800 is carried in the uplink data of the user equipment 1800, so that the scheduled base station can know the cache condition of the user equipment 1800 in time, and avoid Over-scheduling, reducing scheduling resource waste.

In addition, user equipment 1800 may also include receiving circuitry 1804 and the like. The processor 1802 controls the operation of the user equipment 1800, which may also be referred to as a CPU (Centra l Process i ng Un i t , central processing unit). Memory 1 803 can include read only memory and random access memory and provides instructions and data to processor 1802. A portion of memory 1 803 may also include non-volatile random access memory (NVRAM). In a particular application, transmit circuitry 1801 and receive circuitry 1804 can be coupled to antenna 1805. The various components of user equipment 1800 are coupled together by a bus system 1806, which may include, in addition to the data bus, a power bus, a control bus, a status signal bus, and the like. However, for clarity of description, various buses are labeled as bus system 1806 in the figure.

The method disclosed in the foregoing embodiment of the present invention may be applied to the processor 1802 or implemented by the processor 1802. The processor 1802 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1802 or an instruction in a form of software. The processor 1802 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (AS IC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or a transistor logic device, and a discrete Hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. Software modules can be located at random Memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers, etc., are well-known storage media in the field. The storage medium is located in the memory 1803, and the processor 1802 reads the information in the memory 1803, and completes the steps of the above method in combination with the hardware thereof.

Optionally, the first buffered data volume threshold is a threshold that may be a predetermined threshold or a threshold determined by the control base station. The control base station is a base station of the at least two base stations responsible for managing the mobility of the UE. The predetermined threshold value may be specified by the agreement, or other conditions, and the invention is not limited herein. There are various ways for the control base station to determine the threshold value of the first cached data. The present invention is not limited thereto.

Optionally, as an embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of all the first services of the UE; the first cached data volume threshold is all the first services of the UE. a data volume threshold value of the cached data; the data volume of the buffered data of the UE is smaller than the first cached data volume threshold corresponding to the cached data of the UE, where: the data volume of the cached data of all the first services of the UE is smaller than the The first cached data amount threshold. The first service is a traffic offload service, or the first service includes a traffic offload service and a non-offload traffic service.

Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the cached data of each first logical channel group LCG of the UE; the first cached data volume threshold is a threshold value of the data volume corresponding to the first LCG, the threshold value of the first cache data corresponding to each first LCG is the same or different; the data volume of the cached data of the UE is smaller than the first corresponding to the cached data of the UE The buffered data volume threshold includes: the data amount of the cache data of each first LCG of the UE is smaller than the first cache data volume threshold corresponding to the LCG. The first LCG is an LCG that includes a traffic distribution service, or the first LCG includes an LCG that includes a traffic distribution service and an LCG that does not include a traffic distribution service.

Or alternatively, as another embodiment, the data volume of the buffered data of the UE is the data volume of the buffered data of each of the offloaded services of the UE; the first cached data volume threshold is corresponding to each of the traffic offload services. The threshold value of the data volume, the threshold value of the first cache data corresponding to each of the offload services is the same or different; the data volume of the cached data of the UE is smaller than the first buffer corresponding to the cached data of the UE. The data volume threshold includes: the data volume of the buffered data of each of the offloaded services of the UE is smaller than the first cached data volume threshold corresponding to the traffic offloading service.

Optionally, if the user equipment 1800 determines that the data volume of the cached data of the user equipment 1800 is greater than the second cached data volume threshold corresponding to the cached data of the user equipment 1800, the processor 1802 may resume the BSR triggering mechanism. The second buffered data amount threshold is the first buffered data amount threshold, or the second cached data threshold is greater than the first cached data threshold. Further, the second buffered data amount threshold is determined by the control base station.

Optionally, if the user equipment 1800 determines that the data volume of the cached data of the user equipment 1800 is greater than the second buffered data volume threshold corresponding to the cached data of the user equipment 1800, the BSR triggering mechanism of the user equipment 1800 may be directly restored, or the base station may be restored to the base station. After the uplink data carrying the current BSR is sent, the BSR trigger mechanism of the user equipment 1800 is restored.

The user equipment 1800 can also implement the method for the user equipment to transmit data in FIG. 8 to implement the functions of the user equipment in the embodiment in FIG. 8. The present invention is not described herein again.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. Another point, the mutual coupling or display or discussion A direct coupling or communication connection may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, i.e., may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.

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

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. medium.

The above is only a 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 claims.

Claims

Rights request

1. A data transmission method, characterized by including:

The user equipment UE compares the data amount of the cached data of the UE with the first cached data amount threshold value corresponding to the cached data of the UE;

If the data amount of the cached data of the UE is less than the first cached data amount threshold value corresponding to the cached data of the UE, the UE sends low cached data amount indication information to the second base station, and the low cached data amount is The indication information is used to instruct the second base station to stop providing uplink scheduling for the UE;

Wherein, the UE accepts offload services from at least two base stations including the first base station and the second base station, and the first base station is used when the amount of cached data of the UE is smaller than that of the UE. When the first buffered data amount threshold value corresponding to the buffered data is provided, uplink scheduling is provided for the UE.

2. The method of claim 1, wherein the first base station is a control base station, or the second base station is the control base station; wherein the control base station is one of the at least two base stations. The base station responsible for managing the mobility of the UE.

3. The method of claim 2, further comprising:

The first buffered data amount threshold is received, and the first buffered data amount threshold is sent by the control base station.

4. The method according to claim 2 or 3, characterized in that,

As the base station configured to provide uplink scheduling for the UE when the amount of cached data of the UE is less than the first cached data amount threshold value corresponding to the cached data of the UE,

The first base station is a predetermined base station; or

The first base station is a base station determined by the control base station and notified to the UE; or the first base station is a base station selected by the UE.

5. The method according to any one of claims 1 to 4, wherein the UE sending the low cache data amount indication information to the second base station includes:

The UE directly sends the low cache data amount indication information to the second base station; or The UE sends the low cache data amount indication information to the second base station through the first base station; or

The UE directly sends the low cache data amount indication information to the first base station and the second base station.

6. The method according to any one of claims 1 to 5, characterized in that,

The data amount of the cached data of the UE is the data amount of the cached data of all first services of the UE;

The first cached data amount threshold is the data amount threshold of cached data of all first services of the UE;

The data amount of the cached data of the UE is less than the first cached data amount threshold value corresponding to the cached data of the UE, including: the data amount of the cached data of all the first services of the UE is less than the first cached data amount. threshold value;

Wherein, the first service is a distribution service, or the first service includes a distribution service and a non-distribution service.

7. The method according to any one of claims 1 to 5, characterized in that,

The data amount of the cached data of the UE is the data amount of the cached data of each first logical channel group LCG of the UE;

The first cached data volume threshold value is the data volume threshold value corresponding to a first LCG, and the first cached data volume threshold value corresponding to each first LCG is the same or different;

The data amount of the cached data of the UE is less than the first cached data amount threshold corresponding to the cached data of the UE: the data amount of the cached data of each first LCG of the UE is less than the first cached data amount corresponding to the LCG. Cache data volume threshold;

Wherein, the first LCG is an LCG that includes offload services, or the first LCG includes an LCG that includes offload services and an LCG that does not include offload services.

8. The method according to any one of claims 1 to 5, characterized in that, The data amount of the cached data of the UE is the data amount of the cached data of each offload service of the UE;

The first cached data volume threshold is the data volume threshold corresponding to one offload service, and the first cached data volume threshold corresponding to each offload service is the same or different;

The data amount of the cached data of the UE is less than the first cached data amount threshold value corresponding to the cached data of the UE: the data amount of the cached data of each offload service of the UE is less than the first cached data amount threshold value corresponding to the offload service. Cache data volume threshold.

9. The method according to any one of claims 1 to 8, characterized in that,

The low cache data amount indication information is represented by a BSR with zero cache data; or

The low cache data volume indication information is represented by a control element of the media access control layer; or the low cache data volume indication information is represented by a subheader of the media access control layer; or the low cache data volume indication information is represented by a physical Layer indication information is displayed.

10. The method according to any one of claims 1 to 9, further comprising: the UE sending a first buffer status report BSR to the first base station;

The UE receives the uplink scheduling information sent by the first base station;

The UE sends the first uplink data of the UE to the second base station according to the uplink scheduling information.

11. The method according to claim 10, characterized in that,

If the UE has sent uplink data to the second base station after sending the first BSR to the first base station and before sending the first uplink data to the first base station, then the An uplink data carries the second BSR of the UE, so that the first base station can learn the current BSR of the UE.

12. The method according to claim 2, characterized in that, after the second base station stops providing uplink scheduling for the UE, further comprising:

Compare the data amount of the cached data of the UE at this moment with the second cached data corresponding to the cached data of the UE. A threshold value of stored data amount, wherein the second cached data amount threshold value is the first cached data amount threshold value, or the second cached data amount threshold value is greater than the first cached data amount threshold value threshold value.

13. The method of claim 12, wherein the second buffered data amount threshold is determined by the control base station.

14. The method of claim 12 or 13, further comprising:

If the amount of cached data of the UE at this moment is less than the second cached data amount threshold value corresponding to the cached data of the UE, the uplink scheduling request information is sent to the first base station and is not sent to the second base station. Uplink scheduling request information or BSR information; or

If the amount of cached data of the UE at this moment is less than the second cached data amount threshold value corresponding to the cached data of the UE, uplink scheduling request information is sent to the first base station and sent to the second base station. Indication information indicating that the buffered data amount is 0 or indication information indicating that the first base station transmits the buffered data of the UE.

15. The method of claim 12 or 13, further comprising:

If there is a situation in the UE that the amount of cached data of the UE is greater than the second cached data amount threshold value corresponding to the cached data of the UE, the UE restores the BSR triggering mechanism and/or the second The base station's data offload transmission mechanism for the UE.

16. The method according to claim 15, characterized in that, if there is a data amount of the cached data of the UE in the UE that is greater than a second cached data amount threshold value corresponding to the cached data of the UE, If the situation persists and the duration is greater than or equal to the predetermined time value, the UE restores the BSR triggering mechanism and/or the second base station's data offload transmission mechanism for the UE.

17. The method according to claim 16, characterized in that the predetermined time value is determined by the control base station.

18. The method according to any one of claims 15 to 17, characterized in that, the UE restores the BSR triggering mechanism of the UE and/or the second base station performs data offloading of the UE. Transport mechanisms include: The UE sends scheduling request information to the second base station to trigger the second base station to provide uplink scheduling for the UE; or

The UE sends indication information to the first base station that the amount of cached data of the UE is greater than the second cached data amount threshold, so that the first base station notifies the second base station to participate in the UE upstream scheduling; or

The UE sends information requesting the second base station to assist in scheduling to the first base station, so that the first base station notifies the second base station to participate in the uplink scheduling of the UE; or

The UE receives the uplink scheduling recovery indication information sent by the first base station, and resumes accepting the uplink scheduling of the second base station according to the uplink scheduling recovery indication information, where the uplink scheduling recovery indication information carries the second base station Restore the information participating in the uplink scheduling of the UE.

19. The method of claim 2, further comprising:

The UE sends BSR information to the control base station and does not send BSR information to base stations other than the control base station among the at least two base stations.

20. A data transmission method, characterized by including:

The second base station receives the low cache data amount indication information of the user equipment UE, and the low cache data amount indication information is used to indicate that the data amount of the cache data of the UE is lower than the cache data amount threshold corresponding to the cache data of the UE. value, the low cache data amount indication information is sent by the UE or the low cache data amount indication information is sent by the first base station;

The second base station stops providing uplink scheduling for the UE according to the low cache data amount indication information; wherein, the UE accepts offload services from at least two base stations including the first base station and the second base station, The first base station is configured to provide uplink scheduling for the UE when the amount of cached data of the UE is less than a first cached data amount threshold corresponding to the cached data of the UE.

21. The method of claim 20, characterized in that,

When the low cache data amount indication information is sent by the first base station, the low cache data amount indication information is sent by the first base station to the third base station through the interface of the first base station and the second base station. Second base station.

22. The method of claim 20 or 21, further comprising:

The second base station receives the scheduling recovery indication information sent by the UE or the first base station, and the scheduling recovery indication information instructs the second base station to resume providing uplink scheduling for the UE.

23. A data transmission method, characterized by including:

The first base station compares the data amount of the cached data of the user equipment UE with the first cached data amount threshold value corresponding to the cached data of the UE;

If the data amount of the cached data of the UE is less than the first cached data amount threshold value corresponding to the cached data of the UE, the first base station sends low cached data amount indication information to the second base station, and the low cached data The data volume indication information is used to instruct the second base station to stop providing uplink scheduling for the UE; wherein, the UE accepts offload services from at least two base stations including the first base station and the second base station, and the The first base station is configured to provide uplink scheduling for the UE when the amount of cached data of the UE is less than a first cached data amount threshold corresponding to the cached data of the UE.

24. The method according to claim 23, wherein the first base station compares the data amount of the cached data of the UE with the first cached data amount threshold value corresponding to the cached data of the UE, including:

When receiving the BSR of the UE, the first base station compares the data amount of the UE's cached data with the first cached data amount threshold value corresponding to the UE's cached data; and/or

When the first base station provides uplink scheduling for the UE, the data amount of the cached data of the UE is compared with the first cached data amount threshold value corresponding to the cached data of the UE.

25. The method of claim 23 or 24, wherein the first base station is a control base station, or the second base station is a control base station; wherein the control base station is one of the at least two base stations. The base station responsible for managing the mobility of the UE.

26. The method of claim 25, characterized in that,

The first buffered data amount threshold is a predetermined threshold or a threshold determined by the control base station.

27. The method according to any one of claims 23 to 26, further comprising: the first base station sending first indication information to the UE, the first indication information including the second base station Stop providing uplink scheduling information to the UE.

28. The method according to any one of claims 23 to 27, further comprising: if the amount of cached data of the UE in the UE is greater than the second cache corresponding to the cached data of the UE. If the data amount threshold is exceeded, the first base station sends the resumption scheduling indication information to the second base station, and the resumption scheduling indication information is used to instruct the second base station to resume providing uplink scheduling for the UE.

29. The method of claim 28, further comprising:

The first base station sends second indication information to the UE, and the second indication information includes information that the second base station resumes providing uplink scheduling for the UE.

30. The method of claim 25, further comprising:

If the first base station is a control base station, the first base station receives the BSR information sent by the UE;

If the first base station is not a control base station, the first base station does not receive the message sent by the UE.

BSR information.

31. A data transmission method, characterized by including:

The first base station compares the data amount of the cached data of the user equipment UE with the first cached data amount threshold value corresponding to the cached data of the UE;

If the amount of cached data of the UE is less than the first cached data amount threshold value corresponding to the cached data of the UE, the first base station stops providing uplink scheduling for the UE;

Wherein, the UE accepts offload services from at least two base stations including the first base station and the second base station, and the second base station is used when the amount of cached data of the UE is smaller than that of the UE. When the first buffered data amount threshold value corresponding to the buffered data is provided, uplink scheduling is provided for the UE.

32. The method of claim 31, wherein the first base station compares the UE The data amount of cached data and the first cached data amount threshold value corresponding to the cached data of the UE include:

When receiving the BSR of the UE, the first base station compares the data amount of the UE's cached data with the first cached data amount threshold value corresponding to the UE's cached data; and/or

When the first base station provides uplink scheduling for the UE, the data amount of the cached data of the UE is compared with the first cached data amount threshold value corresponding to the cached data of the UE.

33. The method according to claim 31 or 32, characterized in that,

The first base station is the control base station; or the second base station is the control base station; wherein the control base station is the base station responsible for managing the mobility of the UE among the at least two base stations.

34. The method of claim 33, characterized in that,

The first buffered data amount threshold is a predetermined threshold or a threshold determined by the control base station.

35. The method according to any one of claims 31 to 34, further comprising: the first base station sending low cache data amount indication information to the second base station, the low cache data amount indication information It carries information that the data amount of the cached data of the UE is less than the first cached data amount threshold value corresponding to the cached data of the UE.

36. The method of claim 35, further comprising:

Receive the restoration scheduling indication information sent by the second base station;

Resume providing uplink scheduling for the UE according to the resumption scheduling indication information.

37. A data transmission method, characterized by including:

The user equipment UE compares the data amount of the cached data of the UE with the first cached data amount threshold value corresponding to the cached data of the UE;

If the amount of cached data of the UE is less than the first cached data amount threshold value corresponding to the cached data of the UE, the UE sends uplink data carrying the BSR of the UE to the base station, wherein, the UE Accept offload services from at least two base stations including the base station.

38. The method of claim 37, characterized in that, after the UE sends the uplink data carrying the BSR of the UE to the base station, further comprising: if the UE determines the amount of cached data of the UE is greater than the second cached data amount threshold value corresponding to the cached data of the UE, then the UE restores the BSR triggering mechanism, wherein the second cached data amount threshold value is the first cached data amount threshold value , or the second cached data amount threshold is greater than the first cached data amount threshold.

39. A user equipment, characterized by: including:

A comparison unit configured to compare the data amount of the cached data of the user equipment with the first cached data amount threshold value corresponding to the cached data of the user equipment;

A sending unit configured to send low cached data amount indication information to the second base station if the data amount of the cached data of the user equipment is less than a first cached data amount threshold value corresponding to the cached data of the user equipment, the The low cache data amount indication information is used to instruct the second base station to stop providing uplink scheduling for the user equipment;

Wherein, the user equipment accepts offload services from at least two base stations including the first base station and the second base station, and the first base station is used when the amount of cached data of the user equipment is less than the When the first buffered data amount threshold value corresponding to the buffered data of the user equipment is determined, uplink scheduling is provided for the user equipment.

40. The user equipment according to claim 39, wherein the first base station is a control base station, or the second base station is the control base station; wherein, the control base station is the at least two base stations. The base station responsible for managing the mobility of the user equipment.

41. The user equipment according to claim 40, further comprising:

A receiving unit, configured to receive the first buffered data amount threshold value, and the first buffered data amount threshold value is sent by the control base station.

42. The user equipment according to claim 41 or 42, characterized in that,

The first base station is a predetermined base station; or

The first base station is a base station determined by the control base station and notified to the user equipment; or The first base station is the base station selected by the user equipment.

43. The user equipment according to any one of claims 39 to 42, wherein the sending unit is configured to directly send the low cache data amount indication information to the second base station; or

The sending unit is configured to send the low cache data amount indication information to the second base station through the first base station; or

The sending unit is configured to directly send the low cache data amount indication information to the first base station and the second base station.

44. The user equipment according to any one of claims 39 to 43, characterized in that the data amount of the cached data of the user equipment is the data amount of the cached data of all first services of the user equipment;

The first cached data amount threshold is the data amount threshold of cached data of all first services of the user equipment;

The data amount of the cached data of the user equipment is less than the first cached data amount threshold value corresponding to the cached data of the user equipment, including: the data amount of the cached data of all first services of the user equipment is less than the first Cache data volume threshold;

Wherein, the first service is a distribution service, or the first service includes a distribution service and a non-distribution service.

45. The user equipment according to any one of claims 39 to 43, characterized in that, the data amount of cached data of the user equipment is the data amount of cached data of a first logical channel group LCG of the user equipment. ;

The first cached data volume threshold value is the data volume threshold value corresponding to a first LCG, and the first cached data volume threshold value corresponding to each first LCG is the same or different;

The data amount of the cached data of the user equipment is less than the first cached data amount threshold value corresponding to the cached data of the user equipment including: the number of cached data of each first LCG of the user equipment. The data volume is less than the first cache data volume threshold corresponding to LCG;

Wherein, the first LCG is an LCG that includes offload services, or the first LCG includes an LCG that includes offload services and an LCG that does not include offload services.

46. The user equipment according to any one of claims 39 to 43, characterized in that the data amount of cached data of the user equipment is the data amount of cached data of a offload service of the user equipment;

The first cached data volume threshold is the data volume threshold corresponding to one offload service, and the first cached data volume threshold corresponding to each offload service is the same or different;

The data amount of the cached data of the user equipment is less than the first cached data amount threshold value corresponding to the cached data of the user equipment, including: the data amount of the cached data of each offload service of the user equipment is less than the corresponding offload service. The first cached data volume threshold value.

47. The user equipment according to any one of claims 39 to 46, wherein the low cache data amount indication information is represented by a BSR with zero cache data; or

The low cache data volume indication information is represented by a control element of the media access control layer; or the low cache data volume indication information is represented by a subheader of the media access control layer; or the low cache data volume indication information is represented by a physical Layer indication information is displayed.

48. The user equipment according to any one of claims 39 to 47, wherein the sending unit is further configured to send a first buffer status report BSR to the first base station;

The receiving unit is also configured to receive uplink scheduling information sent by the first base station;

The sending unit is further configured to send the first uplink data of the user equipment to the second base station according to the uplink scheduling information.

49. The user equipment according to claim 48, characterized in that,

If the user equipment has sent uplink data to the second base station after sending the first BSR to the first base station and before sending the first uplink data to the first base station, then The first uplink data carries the second BSR of the user equipment, so that the first base station can learn the user equipment The current BSR of the user equipment.

50. The user equipment according to claim 40, characterized in that,

The comparison unit is also configured to compare the data amount of cached data of the user equipment at this moment with the second cached data corresponding to the cached data of the user equipment after the second base station stops providing uplink scheduling for the user equipment. The amount threshold value, wherein the second cache data amount threshold value is the first cache data amount threshold value, or the second cache data amount threshold value is greater than the first cache data amount threshold value The value of the limit.

51. The user equipment according to claim 50, wherein the second buffered data amount threshold is determined by the control base station.

52. The user equipment according to claim 50 or 51, characterized in that,

The sending unit is also configured to send uplink scheduling request information to the first base station if the amount of cached data of the user equipment at this moment is less than a second cached data amount threshold corresponding to the cached data of the user equipment. , do not send uplink scheduling request information or BSR information to the second base station; or

The sending unit is also configured to send uplink scheduling request information to the first base station if the amount of cached data of the user equipment at this moment is less than a second cached data amount threshold corresponding to the cached data of the user equipment. , and sends indication information indicating that the buffered data amount is 0 or indication information indicating that the first base station transmits the buffered data of the user equipment to the second base station.

53. The user equipment according to claim 50 or 51, further comprising: a recovery unit configured to restore the user equipment if the data amount of the cache data of the user equipment is greater than the cache data of the user equipment. If the data corresponds to the second buffered data amount threshold value, the BSR triggering mechanism and/or the data offload transmission mechanism of the second base station to the user equipment is restored.

54. The user equipment according to claim 53, characterized in that,

The recovery unit is specifically used if the amount of cached data of the user equipment in the user equipment is greater than the second cached data amount threshold value corresponding to the cached data of the user equipment. If the duration is greater than or equal to the predetermined time value, the user equipment resumes the BSR triggering mechanism and/or the second base station's data offload transmission mechanism for the user equipment.

55. The user equipment according to claim 54, characterized in that the predetermined time value is determined by the control base station.

56. The user equipment according to any one of claims 53 to 55, characterized in that the recovery unit is specifically configured to send scheduling request information to the second base station through a sending unit to trigger the second base station to The user equipment provides uplink scheduling; or

The recovery unit is specifically configured to send indication information indicating that the amount of cached data of the user equipment is greater than the second cached data amount threshold to the first base station through the sending unit, so that the first base station notifies the The second base station participates in the uplink scheduling of the user equipment; or

The recovery unit is specifically configured to send information requesting the second base station to assist in scheduling to the first base station through the sending unit, so that the first base station notifies the second base station to participate in the uplink scheduling of the user equipment; or

The recovery unit is specifically configured to receive the uplink scheduling recovery indication information sent by the first base station through the receiving unit, and resume accepting the uplink scheduling of the second base station according to the uplink scheduling recovery indication information, the uplink scheduling The recovery indication information carries information that the second base station resumes participating in the uplink scheduling of the UE.

57. The user equipment according to claim 40, characterized in that,

The sending unit is configured to send BSR information to the control base station and not to send BSR information to base stations other than the control base station among the at least two base stations.

58. A base station, characterized by including:

A receiving unit, configured to receive low cache data volume indication information of the user equipment UE, where the low cache data volume indication information is used to indicate that the data volume of the cache data of the UE is lower than the cache data corresponding to the cache data of the UE. The amount threshold value, the low cache data amount indication information is sent by the UE or the low cache data amount indication information is sent by the first base station; A scheduling unit, configured to stop providing uplink scheduling for the UE according to the low cache data volume indication information;

Wherein, the UE accepts offloading services from at least two base stations including the first base station and the base station, and the first base station is used when the amount of cached data of the UE is less than the cached data of the UE. Uplink scheduling is provided for the UE when the first buffered data amount threshold value corresponding to the data is reached.

59. The base station according to claim 58, characterized in that,

When the low cache data amount indication information is sent by the first base station, the low cache data amount indication information is sent by the first base station to the base station through the interface between the first base station and the base station.

60. The base station according to claim 58 or 59, wherein the receiving unit is further configured to receive recovery scheduling indication information sent by the UE or the first base station, and the recovery scheduling indication information indicates that the The base station resumes providing uplink scheduling for the UE.

61. A base station, characterized by: including:

A comparison unit configured to compare the data amount of the cached data of the user equipment UE with the first cached data amount threshold value corresponding to the cached data of the UE;

A sending unit configured to send low cache data amount indication information to the second base station if the data amount of the cached data of the UE is less than a first cached data amount threshold value corresponding to the cached data of the UE, the low cache The data amount indication information is used to instruct the second base station to stop providing uplink scheduling for the UE; wherein, the UE accepts offload services from at least two base stations including the base station and the second base station, and the base station uses When the amount of cached data of the UE is less than a first cached data amount threshold value corresponding to the cached data of the UE, uplink scheduling is provided for the UE.

62. The base station according to claim 61, characterized in that,

The comparison unit is configured to compare the data amount of the cached data of the UE with the first cached data amount threshold value corresponding to the cached data of the UE when receiving the BSR of the UE; and/or The comparison unit is configured to compare the data amount of cached data of the UE with the first cached data amount threshold value corresponding to the cached data of the UE when uplink scheduling is provided for the UE.

63. The base station according to claim 61 or 62, characterized in that,

The base station is a control base station, or the second base station is a control base station; wherein, the control base station is the base station responsible for managing the mobility of the UE among the at least two base stations.

64. The base station according to claim 63, characterized in that,

The first buffered data amount threshold is a predetermined threshold or a threshold determined by the control base station.

65. The base station according to any one of claims 61 to 64, characterized in that,

The sending unit is further configured to send first indication information to the UE, where the first indication information includes information that the second base station stops providing uplink scheduling for the UE.

66. The base station according to any one of claims 61 to 65, characterized in that,

The sending unit is also configured to send a recovery schedule to the second base station if there is a situation in the UE that the amount of cached data of the UE is greater than a second cached data amount threshold corresponding to the cached data of the UE. Instruction information, the resumption of scheduling instruction information is used to instruct the second base station to resume providing uplink scheduling for the UE.

67. The base station according to claim 66, characterized in that,

The sending unit is further configured to send second indication information to the UE, where the second indication information includes information that the second base station resumes providing uplink scheduling for the UE.

68. The base station according to claim 63, further comprising:

The receiving unit is configured to: if the base station is a control base station, the receiving unit receives the BSR information sent by the UE; if the base station is not a control base station, the receiving unit does not receive the BSR information sent by the UE.

69. A base station, characterized by including:

A comparison unit configured to compare the data amount of the cached data of the user equipment UE with the first cached data amount threshold value corresponding to the cached data of the UE;

A scheduling unit configured to stop providing uplink scheduling for the UE if the amount of cached data of the UE is less than the first cached data amount threshold value corresponding to the cached data of the UE;

Wherein, the UE accepts offload services from at least two base stations including the base station and the second base station, and the second base station is used when the amount of cached data of the UE is less than the cached data of the UE. Uplink scheduling is provided for the UE when the first buffered data amount threshold value corresponding to the data is reached.

70. The base station according to claim 69, characterized in that,

The comparison unit is configured to compare the data amount of the UE's cached data with the first cached data amount threshold corresponding to the UE's cached data when receiving the UE's BSR; and/or

The comparison unit is configured to compare the data amount of the cached data of the UE with the first cached data amount threshold value corresponding to the cached data of the UE when providing uplink scheduling for the UE.

71. The base station according to claim 69 or 70, characterized in that,

The base station is a control base station; or the second base station is the control base station;

Wherein, the control base station is the base station responsible for managing the mobility of the UE among the at least two base stations.

72. The base station according to claim 71, characterized in that,

The first buffered data amount threshold is a predetermined threshold or a threshold determined by the control base station.

73. The base station according to any one of claims 69 to 72, further comprising: a sending unit, configured to send low cache data amount indication information to the second base station, the low cache data amount indication information It carries information that the data amount of the cached data of the UE is less than the first cached data amount threshold value corresponding to the cached data of the UE.

74. The base station of claim 73, further comprising:

A receiving unit configured to receive the recovery scheduling indication information sent by the second base station;

A recovery unit, configured to recover uplink scheduling for the UE according to the recovery scheduling indication information.

75. A user equipment, characterized by including:

A comparison unit configured to compare the data amount of the cached data of the user equipment with the first cached data amount threshold value corresponding to the cached data of the user equipment;

A sending unit configured to send uplink data carrying the BSR of the user equipment to the base station if the data amount of the cached data of the user equipment is less than the first cached data amount threshold value corresponding to the cached data of the user equipment, Wherein, the user equipment accepts offload services from at least two base stations including the base station.

76. The user equipment according to claim 75, further comprising:

A recovery unit configured to restore the BSR triggering mechanism if the user equipment determines that the data amount of the cached data of the user equipment is greater than the second cached data amount threshold value corresponding to the cached data of the user equipment, wherein, The second cached data amount threshold is the first cached data amount threshold, or the second cached data amount threshold is greater than the first cached data amount threshold.