WO2015010647A1

WO2015010647A1 - Bsr reporting method, uplink resource allocation method, and device thereof

Info

Publication number: WO2015010647A1
Application number: PCT/CN2014/082976
Authority: WO
Inventors: 吴昱民; 付喆
Original assignee: 电信科学技术研究院
Priority date: 2013-07-26
Filing date: 2014-07-25
Publication date: 2015-01-29
Also published as: CN104349461B; CN104349461A

Abstract

Disclosed are a buffer state report (BSR) reporting method, an uplink resource allocation method, and a device thereof. In the present invention, a terminal differentiates, on the basis of multiple base stations corresponding to a logical channel, buffered data in a transmit buffer corresponding to the logical channel; and, when reporting a BSR to the base stations corresponding to the logical channel, the terminal reports via the BSR to the base stations receiving the BSR the volume of buffered data that is in the transmit buffer corresponding to the logical channel and corresponds to the base stations receiving the BSR. Employment of the present invention solves the problem in the prior art of redundant reporting caused by a lack of differentiation of different eNB data in the volume of buffered data reported during BSR reporting, thus reducing interface resource wastage, and increasing air resource utilization efficiency.

Description

BSR reporting method, uplink resource allocation method and device thereof The present application claims to be submitted to the Chinese Patent Office on July 26, 2013, the application number is 201310320112.0, and the invention name is "a BSR reporting method, an uplink resource allocation method and a device thereof" The priority of the Chinese Patent Application, the entire contents of which is incorporated herein by reference. Technical field

The present invention relates to the field of wireless communications, and in particular, to a BSR reporting method, an uplink resource allocation method, and a device thereof.

BACKGROUND With the deployment of many local nodes such as home base stations, micro cells, and relays, the traditional macro base station-based network architecture will gradually evolve into a network architecture in which more types of base stations coexist, and provide more Multi-level network coverage. In order to improve the correlation performance of the multi-type base station coexistence network architecture, a network architecture for realizing cooperation/aggregation between multiple evolved Node Bs (eNBs) through non-ideal links is proposed. In this architecture, a part of the RB of the user equipment (User Equipment, UE, ie, the terminal) is on the primary cell (Master Cell, MCell) managed by the primary eNB (Me B). Including the Signaling Radio Bearer (SRB) and the Data Radio Bearer (DRB), the other part of the same UE (including the SRB and the DRB) is in the secondary base station. The secondary cell (SCell) managed by the eNB, Se B ).

In a possible multi-layer network coverage environment shown in FIG. 1, the UE can work under both the MeNB and the SeNB. When the UE connected to the MeNB enters the coverage of the cell corresponding to the SeNB, the MeNB may transfer some or all of the data and/or signaling of the UE to the SeNB to obtain the service provided by the SeNB according to signal strength or load balancing. Therefore, the UE can use the resources of the MeNB and the SeNB at the same time, that is, inter-base station aggregation (inter-e B aggregation), where the RBs separated into the SeNB may include the DRB and/or the SRB. In this scenario, multiple RBs of the UE may be respectively carried by the cell controlled by the MeNB (MCell) and the cell controlled by the SeNB (SCell).

When the UE performs bearer separation, the same EPS bearer can simultaneously transmit and receive data through the MeNB and the SeNB.

As shown in FIG. 2, the uplink data of the row data is used as an example. On the UE side, there are independent RLC (Radio Link Control) bearers for the SeNB and the MeNB, and a PDCP (Packet Data Convergence Protocol) entity of the UE. The flow control scheduling data is transmitted on the SeNB and/or the MeNB. On the network side, the PDCP entity corresponding to the UE is on the MeNB, and the MeNB acts as an anchor to uniformly send data from the MeNB and the SeNB to the Serving-GateWay (S-GW) through the S1-U interface. As shown in FIG. 3, the uplink data is sent. On the UE side, there is only one RLC bearer, and the RLC entity of the UE sends the traffic control scheduling data on the Se B and/or Me B. On the network side, the PDCP entity corresponding to the UE is on the Me B, and the MeNB acts as an anchor to uniformly send data from the MeNB and the SeNB to the S-GW through the S1-U.

The Long Term Evolution (LTE) system and the evolved LTE (Advanced Long Term Evolution) (LTE-A) system are both in the scheduling system, and the base station allocates time-frequency resources required for data transmission to the UE, and the UE according to the base station The scheduling command performs downlink data reception or uplink data transmission. After determining the uplink resource allocation, the base station scheduler notifies the UE by using an uplink grant grant (UL grant). The base station scheduler performs uplink resource allocation based on the amount of uplink data to be sent by the UE, that is, the buffer size of the UE. The buffer status of the UE is sent by the UE through a Buffer Status Report (BSR). Base station.

In the case of bearer offloading, when the BSR is reported by the UE, the size of the buffer data reported to each eNB exceeds the actual size of the data that needs to be sent on the eNB. When the network allocates uplink resources to the UE according to the buffer data size reported by the UE, the network allocates uplink resources that are actually needed by the UE, resulting in waste of resources.

It can be seen that the method for calculating the buffer size in the traditional BSR reporting cannot be used normally, so that the network side cannot correctly allocate the appropriate buffer size according to the size of the UE. Upstream resources. SUMMARY OF THE INVENTION Embodiments of the present invention provide a method and device for BSR on a BSR, in which a buffer data reported to each base station is actually required to be sent on the base station under a bearer network architecture. The amount of data.

The BSR reporting method provided by the embodiment of the present invention includes: the terminal distinguishes the buffered data in the sending buffer corresponding to the logical channel according to the multiple base stations corresponding to the logical channel; the terminal corresponds to the logical channel When the base station performs "^BSR, the buffer data amount corresponding to the base station receiving the BSR in the transmission buffer corresponding to the logical channel is reported to the base station receiving the BSR through the BSR.

It can be seen from the above solution that, because the buffer data in the transmission buffer corresponding to the logical channel is determined by the terminal, the multiple base stations corresponding to the logical channel are distinguished, and when the BSR is sent to the base station, the base station reports the The amount of buffered data corresponding to the base station, so that the amount of buffered data corresponding to the base station is reported to the different base stations, that is, the size of the buffer data reported to each base station is the size of the data actually needed to be sent by the base station, thereby The base station allocates the uplink resource according to the actual size of the data to be sent by the base station, and solves the problem that the uplink resource allocated by the base station exceeds the uplink resource required by the terminal, which reduces the waste of the air interface resource and improves the air interface resource. Utilization efficiency.

In a preferred implementation, the terminal distinguishes the buffered data in the sending buffer corresponding to the logical channel according to the multiple base stations corresponding to the logical channel, and includes: the terminal according to the multiple corresponding to the logical channel. Base station And the plurality of sub-transmission buffers are corresponding to the plurality of base stations corresponding to the logical channel, and each of the sub-transmission buffers is configured to store the corresponding base station in the The buffered data to be sent on the logical channel; correspondingly, the buffered data amount corresponding to the base station receiving the BSR in the transmission buffer corresponding to the logical channel is reported by the BSR to the base station receiving the BSR The method includes: transmitting, in a plurality of sub-transmission buffers corresponding to the logical channel, a buffered data volume in a sub-send buffer corresponding to the base station that receives the BSR, and reporting the BSR to the base station that receives the BSR.

It can be seen from the foregoing preferred scheme that, by dividing the sub-buffer for each base station, the uplink buffer data of different base stations can be stored in the corresponding sub-buffer, thereby conveniently calculating the amount of uplink buffer data corresponding to the base station.

In a preferred implementation manner, the terminal distinguishes the buffered data in the sending buffer corresponding to the logical channel according to the multiple base stations corresponding to the logical channel, and the method includes: The buffered data setting identifier in the rushing area is used to identify the base station corresponding to the buffered data; correspondingly, the buffered data corresponding to the base station receiving the BSR in the sending buffer corresponding to the logical channel And reporting, by the BSR, to the base station that receives the BSR, including: according to the identifier of the buffered data in the sending buffer corresponding to the logical channel, the amount of buffered data that is identified as the base station that receives the BSR, passes the BSR Reported to the base station receiving the BSR.

It can be seen from the above preferred solution that the buffered data in the buffer is identified to distinguish the corresponding base station, thereby conveniently calculating the amount of uplink buffered data corresponding to the base station.

In a preferred implementation, the terminal performs fine SR on the base station corresponding to the logical channel by using one of the following methods:

The terminal is on the base station receiving the BSR "3⁄4681; or

The terminal sends a "^BSR" to the primary base station, and instructs the primary base station to forward the BSR to the base station receiving the BSR; or

The terminal reports the BSR to other base stations than the base station that receives the BSR, and instructs the other base station to forward the BSR to the base station that receives the BSR.

The above preferred solution provides a flexible BSR reporting method.

In a preferred solution, before the terminal distinguishes the buffered data in the buffer corresponding to the logical channel according to the multiple base stations corresponding to the logical channel, the terminal further includes: the terminal acquiring the aggregation by using the RRC signaling. The correspondence between the cell and the base station, and the correspondence between the logical channel group and the base station; the correspondence between the aggregated cell and the base station, and the correspondence between the logical channel group and the base station, Determining a plurality of base stations corresponding to the logical channel. In this way, the terminal can determine the correspondence between the logical channel and the base station, and further distinguish the transmission buffer data corresponding to the logical channel by the base station.

In a preferred solution, the method further includes: the terminal acquiring, by using RRC signaling, a BSR timer parameter corresponding to each base station, and setting a retransmission BSR timer and a periodic BSR timer according to the obtained BSR timer parameter; Description

The BSR timer parameter includes a retransmission BSR timer parameter and a periodic BSR timer parameter; correspondingly, the terminal is located After the BSR is reported by the base station corresponding to the logical channel, the method further includes: the terminal starting or restarting a retransmission BSR timer and a periodic BSR timer corresponding to the base station that receives the BSR. The preferred solution provides a BSR timer configuration method to ensure normal reporting of the B SR.

Further, the terminal acquires a BSR timer parameter corresponding to each base station by using RRC signaling, and sets a retransmission BSR timer and a periodic B SR timer according to the obtained BSR timer parameter, including:

The terminal obtains a BSR timer parameter configured by the primary base station for the terminal by using the RRC signaling sent by the primary base station, and sets a retransmission BSR timer and a periodic BSR timing for each base station according to the obtained BSR timer parameter. Or;

Obtaining, by the RRC signaling sent by the primary base station, the BSR timer parameter configured by the primary base station for the terminal, and acquiring, by using the RRC signaling sent by the secondary base station, the BSR timer parameter configured by the secondary base station for the terminal And setting a retransmission BSR timer and a periodic BSR timer for each of the primary base stations according to the BSR timer parameter sent by the primary base station, and setting a retransmission BSR timer for the secondary base station according to a BSR timer parameter sent by the secondary base station. And periodic BSR timing

H; or

The terminal obtains a BSR timer parameter configured by the primary base station and the secondary base station for the terminal by using the RRC signaling sent by the primary base station, and sets the primary according to the obtained BSR timer parameter configured by the primary base station. The base station retransmits the BSR timer and the periodic BSR timer, and sets the secondary base station retransmission BSR timer and the periodic BSR timer according to the obtained BSR timer parameter configured by the secondary base station; wherein, the secondary base station will be Sending, by the terminal, a BSR timer parameter to the primary base station; or

The terminal obtains a BSR timer parameter configured by the secondary base station and the primary base station for the terminal by using the RRC signaling sent by the secondary base station, and sets the auxiliary according to the acquired BSR timer parameter configured by the secondary base station. The base station retransmits the BSR timer and the periodic BSR timer, and sets the primary base station retransmission BSR timer and the periodic BSR timer according to the obtained BSR timer parameter configured by the primary base station; wherein, the primary base station will be The BSR timer parameter configured by the terminal is sent to the secondary base station.

The above preferred solution provides a flexible BSR timer setting method.

A terminal device provided by another embodiment of the present invention includes:

a buffering data management module, configured to distinguish buffer data in a sending buffer corresponding to the logical channel according to multiple base stations corresponding to the logical channel;

a BSR reporting module, configured to: “3⁄4681” to the base station corresponding to the logical channel, and when the BSR is reported to the base station corresponding to the logical channel, the BSR is received in a sending buffer corresponding to the logical channel. The amount of buffered data corresponding to the base station is reported by the BSR to the base station that receives the BSR.

It can be seen from the above solution that, because the buffer data in the transmission buffer corresponding to the logical channel is determined by the terminal, the multiple base stations corresponding to the logical channel are distinguished, and when the BSR is sent to the base station, the base station reports the The amount of buffered data corresponding to the base station, so that the amount of buffered data corresponding to the base station is reported to different base stations, that is, reported to each base station. The size of the buffer data is the size of the data that needs to be sent on the base station, so that the base station allocates the uplink resource according to the size of the data sent by the base station according to actual needs, and solves the allocation of the base station compared with the prior art. The uplink resources exceed the uplink resources required by the terminal, which reduces the waste of air interface resources and improves the utilization efficiency of air interface resources.

In a preferred mode, the buffer data management module is specifically configured to: set, according to multiple base stations corresponding to the logical channel, multiple sub-transmission buffers corresponding to the logical channel, the multiple sub-transmission buffers and Each of the plurality of base stations corresponding to the logical channel has a one-to-one correspondence, and each of the sub-transmission buffers is configured to store the buffered data to be sent by the corresponding base station on the logical channel. Correspondingly, the BSR reporting module is specifically configured to: The amount of buffered data in the sub-send buffer corresponding to the base station that receives the BSR in the plurality of sub-transmission buffers corresponding to the logical channel is reported by the BSR to the base station that receives the BSR.

In a preferred mode, the buffer data management module is specifically configured to: set an identifier for the buffered data in the sending buffer corresponding to the logical channel, where the identifier is used to identify the base station corresponding to the buffered data; The BSR reporting module is configured to: report, according to the identifier of the buffered data in the sending buffer corresponding to the logical channel, the buffered data volume of the base station that is configured to receive the BSR, and report the BSR to the receiving Base station of the BSR.

In a preferred mode, the BSR reporting module is specifically configured to: report a BSR to a base station that receives the BSR; or, notify the primary base station, and instruct the primary base station to forward the BSR to receive the Or the base station of the BSR, or the base station that reports the BSR to the base station that receives the BSR.

The above preferred solution provides a flexible BSR reporting method.

In a preferred mode, the method further includes: a determining module, configured to acquire, by using radio resource control RRC signaling, a correspondence between the aggregated cell and the base station, and a correspondence between the logical channel group and the base station; The correspondence between the cell and the base station, and the correspondence between the logical channel group and the base station, determine a plurality of base stations corresponding to the logical channel. In this way, the terminal can determine the correspondence between the logical channel and the base station, and further distinguish the transmission buffer data corresponding to the logical channel by the base station.

In a preferred mode, the method further includes: a timer setting module, configured to acquire, by using RRC signaling, a BSR timer parameter corresponding to each base station, and set a retransmission BSR timer and a periodic BSR timer according to the obtained BSR timer parameter. The BSR timer parameter includes a retransmission BSR timer parameter and a periodic BSR timer parameter. Correspondingly, the BSR reporting module is further configured to: after “^BSR” to the base station corresponding to the logical channel, The retransmission BSR timer and the periodic BSR timer corresponding to the base station that receives the BSR are started or restarted. The preferred solution provides a BSR timer configuration method to ensure normal BSR reporting. Another embodiment of the present invention provides an uplink resource allocation method and a device thereof, which are configured to allocate uplink resources to a traffic offloading bearer of a terminal by negotiating between the base stations corresponding to the traffic offloading bearer in a network structure with separate bearers. The sum of the amount of data scheduled to be transmitted by each terminal for the terminal does not exceed the sum of the amount of uplink buffered data reported by the terminal.

The uplink resource allocation method provided by the embodiment of the present invention includes:

The base station obtains a buffer status report BSR reported by the terminal that carries the offload, where the BSR carries the sum of the uplink buffered data amounts of all the base stations corresponding to the logical channel group of the terminal; and the base station corresponds to the logical channel group. The other base stations perform negotiation to determine, for each of the base stations corresponding to the logical channel group, the amount of data scheduled to be transmitted by the terminal, where the sum of the data amounts scheduled and transmitted by the base station for the terminal does not exceed the uplink reported by the terminal. The sum of the buffered data amounts; the base station allocates an uplink transmission resource to the terminal according to the amount of data that the base station schedules to transmit for the terminal.

It can be seen from the foregoing method that, after obtaining the BSR reported by the terminal, the primary base station determines the amount of data allocated by each base station by negotiating with other base stations according to the sum of the amount of uplink buffered data indicated by the BSR, and It is ensured that the sum of the amount of data allocated by each base station does not exceed the sum of the amount of uplink buffered data reported by the terminal, so that each base station allocates uplink resources only to a part of the amount of uplink buffered data reported by the terminal, which is required by the prior art. Compared with the uplink resources, the sum of the uplink buffered data reported by the terminal reduces the waste of the air interface resources and improves the utilization efficiency of the air interface resources.

In a preferred mode, the base station determines, by using the other base stations corresponding to the logical channel group, the amount of data that each base station corresponding to the logical channel group is scheduled to transmit for the terminal, including:

After the primary base station obtains the BSR reported by the terminal that carries the offload, the primary base station determines the secondary base station corresponding to the logical channel group; and the primary base station determines the auxiliary resource according to the reserved amount of the secondary base station corresponding to the logical channel group. The base station and the primary base station schedule the amount of data to be transmitted by the terminal; the primary base station sends the data amount that the secondary base station schedules to transmit to the secondary base station, and instructs the secondary base station to perform the The secondary base station schedules the amount of data transmitted by the terminal, and allocates an uplink transmission resource to the terminal.

It can be seen from the above preferred manner that the secondary base station reserves resources for the offloaded bearer and reports it to the primary base station, so that the primary base station can determine the amount of data scheduled and transmitted by each base station for the terminal, and ensure the amount of data allocated by each base station. The total sum does not exceed the sum of the amount of uplink buffered data reported by the terminal, so that each base station allocates uplink resources only to a part of the amount of uplink buffered data reported by the terminal, which reduces waste of air interface resources and improves utilization of air interface resources. effectiveness.

In a preferred solution, the base station determines, by using the other base stations corresponding to the logical channel group, the amount of data that each base station corresponding to the logical channel group schedules to transmit for the terminal, including:

After the primary base station obtains the BSR reported by the terminal that carries the offload, determines the secondary base station corresponding to the logical channel group; and the primary base station determines the secondary base station according to the transmission ratio of all the base stations corresponding to the logical channel group of the terminal. The amount of data that the primary base station schedules to transmit for the terminal; the primary base station sends the data amount that the secondary base station schedules to transmit to the secondary base station, and instructs the secondary base station to perform the secondary base station according to the auxiliary The base station schedules the transmitted data for the terminal The amount is allocated to the terminal for uplink transmission resources.

It can be seen from the foregoing preferred scheme that the primary base station allocates the scheduled transmission data amount to each base station according to the transmission ratio of each base station, and ensures that the sum of the data amounts allocated by the base stations does not exceed the uplink buffered data amount reported by the terminal. The sum is such that each base station allocates uplink resources only to a part of the amount of uplink buffered data reported by the terminal, which reduces waste of air interface resources and improves utilization efficiency of air interface resources.

In a preferred solution, the primary base station obtains a transmission ratio of all base stations corresponding to the logical channel group of the terminal by using one of the following methods:

And the secondary base station corresponding to the logical channel group of the terminal negotiates a transmission ratio of all base stations corresponding to the logical channel group of the terminal;

Obtaining, by the primary base station, a transmission ratio of all base stations corresponding to the logical channel group of the terminal from an operation and maintenance management OAM system;

The primary base station determines, according to the statistics of the offloading scheduling, the transmission ratios of all the base stations corresponding to the logical channel group of the terminal.

The above preferred solution provides a variety of ways to obtain the base station transmission ratio, which improves system flexibility.

In a preferred implementation, after the primary base station sends the data volume scheduled to be transmitted by the secondary base station to the secondary base station, the master base station further includes: the primary base station receiving the secondary feedback from the secondary base station The amount of data that the base station actually allows to be scheduled to be transmitted; the primary base station adjusts the amount of data scheduled to be transmitted by the primary base station for the terminal according to the amount of data that the secondary base station actually allows for scheduling transmission, and adjusts according to the adjustment The amount of scheduled transmission data is allocated to the terminal for uplink transmission resources.

It can be seen from the foregoing preferred scheme that the secondary base station can report the amount of data to be transmitted to the primary base station according to the actual amount of data that can be scheduled and transmitted by the secondary base station, so that the secondary base station cannot schedule the transmission of the data, and the primary base station performs scheduling transmission, thereby improving reliability.

In a preferred mode, the base station determines, by the other base stations corresponding to the logical channel group, the amount of data that each base station corresponding to the logical channel group schedules to transmit, including: The amount of data that the base station determines to be scheduled to be transmitted by the terminal according to the BSR of the terminal; the amount of data that the primary base station schedules to transmit according to the secondary base station, and the terminal reports The BSR determines the amount of data that the primary base station schedules to transmit for the terminal.

It can be seen from the foregoing preferred scheme that the secondary base station calculates the amount of data that is scheduled to be transmitted by the terminal and reports it to the primary base station. The primary base station calculates the data that is scheduled to be transmitted by the terminal according to the BSR reported by the terminal and the amount of transmission data reported by each base station. And the sum of the amount of data allocated by each base station does not exceed the sum of the amount of uplink buffered data reported by the terminal, so that each base station allocates uplink resources only to a part of the amount of uplink buffered data reported by the terminal, which reduces The waste of air interface resources has improved the utilization efficiency of air interface resources.

The base station device provided by the embodiment of the present invention includes:

a receiving module, configured to obtain a buffer status report BSR reported by the terminal that carries the offload, where the BSR carries the The sum of the amount of uplink buffered data of all base stations corresponding to the logical channel group of the terminal;

a negotiation module, configured to determine, by using a base station corresponding to the logical channel group, that each base station corresponding to the logical channel group is scheduled to transmit data for the terminal, where each base station schedules transmission for the terminal The sum of the amount of data does not exceed the sum of the amount of uplink buffer data on the terminal;

And a resource allocation module, configured to allocate uplink transmission resources to the terminal according to the amount of data that the base station schedules to transmit for the terminal.

In a preferred mode, when the base station device is the primary base station device, the negotiation module is specifically configured to: after obtaining the BSR reported by the terminal that carries the offload, determine the secondary base station corresponding to the logical channel group; The secondary base station corresponding to the channel group is the amount of resources reserved for the offloaded bearer, and determines the amount of data that the secondary base station and the primary base station schedule to transmit for the terminal; and sends the data amount that the secondary base station schedules to transmit for the terminal Giving the secondary base station, and instructing the secondary base station to allocate an uplink transmission resource to the terminal according to the amount of data that the secondary base station schedules to transmit for the terminal.

In a preferred mode, when the base station device is the primary base station, the negotiation module is specifically configured to: after obtaining the BSR reported by the terminal that carries the offload, determine the secondary base station corresponding to the logical channel group; The transmission ratio of all the base stations corresponding to the logical channel group, determining the amount of data scheduled to be transmitted by the secondary base station and the primary base station for the terminal; and transmitting, by the secondary base station, the amount of data scheduled for transmission by the terminal to the terminal The secondary base station is configured to instruct the secondary base station to allocate an uplink transmission resource to the terminal according to the amount of data that the secondary base station schedules to transmit for the terminal.

In a preferred mode, the negotiation module is further configured to: obtain, by using one of the following manners, a transmission ratio of all base stations corresponding to the logical channel group of the terminal:

The secondary base station corresponding to the logical channel group of the terminal negotiates the logical channel group corresponding to the terminal Transmission ratio of all base stations;

Acquiring, by the operation and maintenance management OAM system, a transmission ratio of all base stations corresponding to the logical channel group of the terminal;

And determining a transmission ratio of all base stations corresponding to the logical channel group of the terminal according to a statistical result of the offload scheduling.

In a preferred mode, the resource allocation module is further configured to: after sending, by the secondary base station, the amount of data scheduled for transmission by the terminal to the secondary base station, receive the secondary base station that is fed back by the secondary base station. Allowing to schedule the amount of data to be transmitted; adjusting the amount of data scheduled to be transmitted by the primary base station for the terminal according to the amount of data that the secondary base station actually allows for scheduled transmission, and transmitting the amount of data according to the adjusted scheduling Allocating uplink transmission resources to the terminal.

In a preferred mode, the negotiation module is specifically configured to: receive, according to the BSR reported by the terminal, the amount of data that is scheduled to be transmitted by the terminal according to the BSR reported by the terminal; The amount of data transmitted, and the BSR reported by the terminal, determine the amount of data that the primary base station schedules to transmit for the terminal.

a processor, configured to distinguish, according to a plurality of base stations corresponding to the logical channel, buffer data in a sending buffer corresponding to the logical channel;

The upper port is configured to send a "BSR to the base station corresponding to the logical channel and "BSR" to the base station corresponding to the logical channel, and receive and receive the logical channel corresponding to the logical channel. The amount of buffered data corresponding to the base station of the BSR is reported by the BSR to the base station that receives the BSR.

It can be seen from the above solution that, because the buffer data in the transmission buffer corresponding to the logical channel is determined by the terminal, the multiple base stations corresponding to the logical channel are distinguished, and when the BSR is sent to the base station, the base station reports the The amount of buffered data corresponding to the base station, so that the amount of buffered data corresponding to the base station is reported to the different base stations, that is, the size of the buffer data reported to each base station is the size of the data actually needed to be sent by the base station, thereby The base station allocates the uplink resource according to the actual size of the data to be sent by the base station, and solves the problem that the uplink resource allocated by the base station exceeds the uplink resource required by the terminal, which reduces the waste of the air interface resource and improves the air interface resource. Utilization efficiency. In a preferred mode, the processor is specifically configured to: set, according to multiple base stations corresponding to the logical channel, multiple sub-transmission buffers corresponding to the logical channel, the multiple sub-transmission buffers and the logic Each of the plurality of base stations corresponding to the channel has a one-to-one correspondence, and each of the sub-transmission buffers is configured to store the buffered data to be sent by the corresponding base station on the logical channel. Correspondingly, the reporting port is specifically configured to: In the plurality of sub-transmission buffers corresponding to the channel, the amount of buffered data in the sub-sequence buffer corresponding to the base station that receives the BSR is reported by the BSR to the base station that receives the BSR.

In a preferred mode, the processor is specifically configured to: set an identifier for the buffered data in the sending buffer corresponding to the logical channel, where the identifier is used to identify the base station corresponding to the buffered data; The reporting port is specifically configured to: report, according to the identifier of the buffered data in the sending buffer corresponding to the logical channel, the amount of the buffered data that is sent to the base station that receives the BSR, and report the amount of the buffered data to the base station that receives the BSR.

In a preferred mode, the reporting port is specifically configured to: “3⁄4681; or, to the primary base station, “BSR” to the base station that receives the BSR, and instruct the primary base station to forward the BSR to the receiving station. The base station of the BSR is reported; or the BSR is reported to another base station other than the base station that receives the BSR, and the other base station is instructed to forward the BSR to the base station that receives the BSR.

The above preferred solution provides a flexible BSR reporting method.

In a preferred mode, the processor is further configured to: acquire, by using radio resource control RRC signaling, a correspondence between the aggregated cell and the base station, and a correspondence between the logical channel group and the base station; The correspondence between the cell and the base station, and the correspondence between the logical channel group and the base station, determine a plurality of base stations corresponding to the logical channel. In this way, the terminal can determine the correspondence between the logical channel and the base station, and further distinguish the transmission buffer data corresponding to the logical channel by the base station.

In a preferred mode, the processor is further configured to: obtain, by using RRC signaling, a BSR timer parameter corresponding to each base station, and set a retransmission BSR timer and a periodic BSR timer according to the obtained BSR timer parameter; The BSR timer parameter includes a retransmission BSR timer parameter and a periodic BSR timer parameter. Correspondingly, the upper 4 port is further used to start or after 3⁄4Β8Ι to the base station corresponding to the logical channel. Restarting the retransmission B SR timer and the periodic B SR timer corresponding to the base station receiving the BSR. The preferred solution provides a BSR timer configuration method to ensure normal BSR reporting.

Another embodiment of the present invention provides an uplink resource allocation method and a device thereof, which are configured to allocate uplink resources to a traffic offloading bearer of a terminal by negotiating between the base stations corresponding to the traffic offloading bearer in a network structure with separate bearers. The sum of the amount of data scheduled to be transmitted by each terminal for the terminal does not exceed the sum of the amount of uplink buffered data reported by the terminal.

The base station device provided by the embodiment of the present invention includes: a receiving port, configured to obtain a buffer status report BSR reported by the terminal carrying the offload, where the BSR carries the sum of the uplink buffered data amounts of all the base stations corresponding to the logical channel group of the terminal;

a processor, configured to determine, by using a base station that is corresponding to the logical channel group, that each base station corresponding to the logical channel group schedules transmission of data for the terminal, where each base station schedules transmission for the terminal The sum of the amount of data does not exceed the sum of the amount of uplink buffered data reported by the terminal, and the uplink transmission resource is allocated to the terminal according to the amount of data that the base station schedules to transmit for the terminal.

In a preferred mode, when the base station device is the primary base station device, the processor is specifically configured to: after obtaining the BSR reported by the terminal that carries the offload, determine the secondary base station corresponding to the logical channel group; The secondary base station corresponding to the channel group is the amount of resources reserved for the offloaded bearer, and determines the amount of data that the secondary base station and the primary base station schedule to transmit for the terminal; and sends the data amount that the secondary base station schedules to transmit for the terminal Giving the secondary base station, and instructing the secondary base station to allocate an uplink transmission resource to the terminal according to the amount of data that the secondary base station schedules to transmit for the terminal.

In a preferred mode, when the base station device is the primary base station, the processor is specifically configured to: after obtaining the BSR reported by the terminal that carries the offload, determine the secondary base station corresponding to the logical channel group; The transmission ratio of all the base stations corresponding to the logical channel group, determining the amount of data scheduled to be transmitted by the secondary base station and the primary base station for the terminal; and transmitting, by the secondary base station, the amount of data scheduled for transmission by the terminal to the terminal The secondary base station is configured to instruct the secondary base station to allocate an uplink transmission resource to the terminal according to the amount of data that the secondary base station schedules to transmit for the terminal.

In a preferred mode, the processor is further configured to obtain, by using one of the following manners, a transmission ratio of all base stations corresponding to the logical channel group of the terminal:

In a preferred mode, the processor is further configured to: after sending, by the secondary base station, the amount of data scheduled for transmission by the terminal to the secondary base station, receiving, by the secondary base station, the secondary base station that is actually allowed by the secondary base station Scheduling the amount of data to be transmitted; adjusting the amount of data scheduled to be transmitted by the primary base station for the terminal according to the amount of data that the secondary base station actually allows for scheduled transmission, and adjusting the amount of data transmitted according to the adjusted schedule The terminal allocates an uplink transmission resource.

In a preferred mode, the processor is specifically configured to: receive, according to the BSR reported by the terminal, the amount of data scheduled to be transmitted by the terminal according to the BSR reported by the terminal; The amount of data transmitted, and the BSR reported by the terminal, determine the amount of data that the primary base station schedules to transmit for the terminal.

It can be seen from the foregoing preferred scheme that the secondary base station calculates the amount of data that is scheduled to be transmitted by the terminal and reports it to the primary base station. The primary base station calculates the data that is scheduled to be transmitted by the terminal according to the BSR reported by the terminal and the amount of transmission data reported by each base station. And the sum of the amount of data allocated by each base station does not exceed the sum of the amount of uplink buffered data on the terminal, so that each base station allocates uplink resources only to a part of the amount of uplink buffered data reported by the terminal, reducing The waste of air interface resources has improved the utilization efficiency of air interface resources. DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings to be used in the description of the embodiments will be described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of these drawings without the inventive labor.

FIG. 1 is a schematic diagram of a network scenario in which a bearer is separated in the prior art;

2 is a schematic diagram of PDCP bearer shunting in the prior art;

3 is a schematic diagram of a RLC bearer shunt in the prior art;

4 is a schematic flowchart of a BSR reporting process according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart of an uplink resource allocation process according to an embodiment of the present disclosure;

6A and FIG. 6B are respectively schematic flowcharts of scheduling and offloading according to an embodiment of the present invention; FIG. 7 is a schematic diagram of a first structure of a terminal device according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of a first structure of a base station device according to an embodiment of the present invention.

FIG. 9 is a schematic diagram of a second structure of a terminal device according to an embodiment of the present disclosure;

FIG. 10 is a schematic diagram of a second structure of a base station device according to an embodiment of the present invention. 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. The embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In order to more clearly understand the embodiments of the present invention, some terms or concepts involved in the embodiments of the present invention are first described below:

Logical channel: is the SAP (Service Access Point) between the RLC layer and the MAC layer, which is a channel divided according to the transmission content. The definition of this channel is only a logically artificial definition;

Logical channel group: In the LTE system, four logical channel groups are divided when reporting BSR;

Buffer Size: The amount of data buffer in the corresponding logical channel group. The total amount of data of the buffer corresponding to all logical channels in the logical channel group corresponding to each layer;

The RB or the logical channel carrying the offloading: in the scenario where the bearer offloading technology is used, the traffic corresponding to the RB or the logical channel is shared to multiple base stations;

The base station receiving the BSR: When the UE reports the BSR, it can directly report to the target base station of the BSR, or can be forwarded to the target base station of the BSR through other base stations. In this embodiment, the target base station of the BSR is referred to as "the base station receiving the BSR".

Embodiment 1

The first embodiment describes that, in a bearer-separated network architecture, the UE side buffers data corresponding to different eNBs or cells in each transmission buffer corresponding to the logical channel. When the UE sends a BSR to the Me B and/or the SeNB, the Buffer Size is calculated according to the data corresponding to the base station or the cell. For the architecture of the PDCP bearer offloading shown in Figure 2, the sending buffer corresponding to the logical channel may be a sending buffer of the PDCP entity; for the architecture of the RLC bearer shunt shown in Figure 3, the logical channel corresponding to the foregoing The send buffer can be the transmit buffer of the PDCP and/or RLC entity.

In the architecture of the bearer separation, the UE usually needs to obtain configuration information related to BSR reporting from the network side. In the embodiment of the present invention, the UE may obtain one or a combination of the following configuration information from the network side:

(1) The UE needs to obtain aggregated information through RRC (Radio Resource Control) signaling. Correspondence between the cell and the eNB;

(2) The UE needs to acquire the correspondence between the RB or the logical channel group and the transmission base station or the cell through the RRC signaling;

According to the above-mentioned "corresponding relationship between the aggregated cell and the eNB", and "the correspondence between the RB or the logical channel group and the transmission base station or the cell", the UE may determine that the RB or the logical channel corresponding to the bearer is corresponding. eNB.

(3) The UE obtains the BSR timer parameter configured by the eNB for the UE by using the RRC signaling, and the BSR timer parameter includes the retxBSR-Timer (retransmission BSR timer) parameter and the periodicBSR-Timer (period BSR timer) parameter. The UE sets the retxBSR-Timer and the periodicBSR-Timer according to the obtained BSR timer parameters. Specific configuration methods can include:

Manner 1: The MeNB configures the retxBSR-Timer parameter and the periodicBSR-Timer parameter for the UE for the UE, and configures the retxBSR-Timer parameter (such as the chrono duration) and the periodicBSR-Timer parameter (such as the period length) configured for the UE through the RRC. The signaling is sent to the UE, and the UE sets the retxBSR-Timer and the periodicBSR-Timer for each eNB corresponding to the logical channel of the UE's bearer offloading.

Manner 2: The MeNB and the SeNB respectively configure the retxBSR-Timer parameter and the periodicBSR-Timer parameter for the UE, and send the retaxBSR-Timer parameter to the UE through RRC signaling. The UE sets the retxBSR-Timer and periodicBSR-Timer corresponding to the MeNB according to the parameters configured by the MeNB, and sets the retxBSR-Timer and periodicBSR-Timer corresponding to the SeNB according to the parameters configured by the SeNB.

Mode 3: The MeNB and the SeNB respectively configure the retxBSR-Timer parameter and the periodicBSR-Timer parameter for the UE, and the SeNB sends the retxBSR-Timer parameter and the periodicBSR-Timer parameter configured for the UE to the MeNB, where the MeNB and the SeNB are the UE. The configured retxBSR-Timer parameter and the periodicBSR-Timer parameter are sent to the UE through RRC signaling. The MeNB needs to carry the identifier information of the relevant eNB when transmitting the retxBSR-Timer parameter and the periodicBSR-Timer parameter configured by the other eNB to the UE. The UE sets the retxBSR-Timer and periodicBSR-Timer corresponding to the MeNB according to the parameters configured by the MeNB, and sets the retxBSR-Timer and periodicBSR-Timer corresponding to the SeNB according to the parameters configured by the SeNB.

Mode 4: The MeNB and the SeNB respectively configure the retxBSR-Timer parameter and the periodicBSR-Timer parameter for the UE, and the MeNB sends the retxBSR-Timer parameter and the periodicBSR-Timer parameter configured for the UE to the SeNB, where the SeNB uses the MeNB and the SeNB as the UE. The configured retxBSR-Timer parameter and the periodicBSR-Timer parameter are sent to the UE through RRC signaling. The SeNB needs to carry the identifier information of the relevant eNB when transmitting the retxBSR-Timer parameter and the periodicBSR-Timer parameter configured by the other eNB to the UE. The UE sets the retxBSR-Timer and periodicBSR-Timer corresponding to the MeNB according to the parameters configured by the MeNB, and sets the retxBSR-Timer and periodicBSR-Timer corresponding to the SeNB according to the parameters configured by the SeNB.

FIG. 4 is a schematic diagram of a BSR reporting process according to Embodiment 1 of the present invention. As shown in the figure, the process may include: Step 401: The UE performs RB or logic according to the RB that carries the offload or multiple eNBs corresponding to the logical channel. channel Differentiating the buffered data in the send buffer to distinguish;

Step 402: When the UE reports the BSR to the RB or the eB corresponding to the logical channel, the data of the buffered data corresponding to the eNB (that is, the base station receiving the BSR) in the transmission buffer corresponding to the RB or the logical channel The quantity is reported to the eNB through the BSR (that is, the base station receiving the BSR).

Thereafter, the eNB allocates a corresponding uplink resource (UL grant) to the UE according to the data volume of the buffer indicated by the BSR received in step 402.

Further, after the UE reports the B SR to the eNB, the UE starts or restarts the periodicB SR-Timer and the retxBSR-Timer corresponding to the eNB.

In a specific implementation manner, in step 401 of the foregoing process, the UE may use the following manners to divide data in a transmission buffer of the same logical channel into data of different eNBs or cells: a plurality of eNBs corresponding to the RB or the logical channel, and a plurality of sub-transmission buffers corresponding to the RB or the logical channel, where the plurality of sub-transmission buffers correspond to the plurality of eNBs corresponding to the RB or the logical channel, and each sub-transmission The buffer is used to store buffer data to be sent by the corresponding eNB on the RB or logical channel. Correspondingly, in step 402, the UE sends the data amount of the buffered data in the sub-buffer corresponding to the eNB that receives the BSR in the plurality of sub-transmission buffers corresponding to the RB or the logical channel, and sends the data amount of the buffered data in the sub-sequence corresponding to the eNB of the BSR. The eNB that receives the BSR.

In another specific implementation manner, in step 401 of the foregoing process, the UE may use the following manner to divide data in the sending buffer of the same logical channel into data of different eNBs or cells: the UE is a bearer offload. The buffered data setting identifier in the sending buffer corresponding to the RB or the logical channel, the identifier is used to identify the e B corresponding to the buffered data. Correspondingly, in step 402, the UE determines, according to the identifier of the buffered data in the sending buffer corresponding to the RB or the logical channel, the data amount of the buffered data of the eNB that receives the BSR, and receives the data through the BSR. The ESR of the BSR

In step 402 of the foregoing process, the UE may use the trigger mode of the per UE per eNB. The triggering manner of the per UE per eNB means that the UE performs the triggering of the BSR on the eNB that needs to perform uplink data transmission. If the BSR triggering mode of the per UE per e B is used, the BSR triggering type and the triggering mode of the previous version of the R12 can be used to determine whether there is a BSR triggering.

Further, when the per UE per eNB BSR triggering mode is used, the UE may send the BSR of the per eNB to the corresponding eNB when the corresponding eNB has UL (uplink) resources, or may send the other eNB to the other eNB, and then The other eNBs interact with the eNB and the Me B corresponding to the per eNB BSR, and may also report to the E B, and then the Me B interacts with the e B corresponding to the per eNB BSR.

According to the buffer data differentiated in step 401, when the UE reports the corresponding BSR to the eNB or the cell, the amount of buffer data reported by the UE is equal to the data volume of the buffer corresponding to the eNB or the cell.

As can be seen from the foregoing description of the first embodiment, the terminal distinguishes the buffered data in the transmit buffer corresponding to the RB or the logical channel that carries the offload, according to the multiple base stations corresponding to the RB or the logical channel, and In the base When the station reports the BSR, the amount of buffered data corresponding to the base station is reported to the base station, so that the amount of buffered data corresponding to the base station is reported to different base stations, that is, the size of the buffer data reported to each base station is actually needed. The size of the data sent by the base station, so that the base station allocates the uplink resource according to the size of the data that is sent by the base station according to actual needs. Compared with the prior art, the uplink resource allocated by the base station exceeds the uplink resource required by the terminal, and the uplink resource is reduced. For the waste of air interface resources, the utilization efficiency of air interface resources is improved.

Embodiment 2

The embodiment of the present invention describes that, after the bearer is separated from the network, the MeNB and/or the SeNB on the network side, after receiving the BSR from the UE that carries the offload, negotiates between the MeNB and the SeNB, so that the MeNB and the SeNB are allocated to the UE. The sum of the uplink resources does not exceed the amount of uplink buffer data reported by the UE (that is, the Buffer Size).

Under the network architecture with separate bearers, a non-ideal data and/or signaling interface (Xn interface, which is a wired interface or a wireless interface) may be used between the MeNB and the SeNB or between the SeNBs. In the embodiment of the present invention, the following information can be exchanged between the base stations through the interface:

(1) The correspondence between the RBs, the UEs, and the transmitting base stations, or the correspondence between the logical channels, the UEs, and the transmitting base stations.

(2) The BSR parameter configuration information of the UE may be required to be exchanged between the UEs, for example, the base station information corresponding to each buffer in the content of the BSR reported by the UE.

e B can also send configuration information related to the BSR to the UE through RRC signaling. In this embodiment, the configuration information that e B sends to the UE through RRC signaling may include one or a combination of the following:

(1) transmitting, by using RRC signaling, a correspondence between the aggregated cell and the eNB to the UE;

(2) transmitting, by using RRC signaling, the RB or the logical channel group to the UE, and the corresponding relationship between the transmitting base station or the cell;

(3) The BSR timer parameter configured by each eNB for the UE is sent to the UE by using RRC signaling, and the BSR timer parameter includes a retxBSR-Timer (Retransmission BSR Timer) parameter and a periodicBSR-Timer (Periodic BSR Timer) parameter. The UE sets the retxBSR-Timer and the periodicBSR-Timer according to the obtained BSR timer parameters. Specific configuration methods can include:

Mode 2: The MeNB and the SeNB respectively configure the retxBSR-Timer parameter and the periodicBSR-Timer parameter for the UE, and respectively send the retaxBSR-Timer parameter and the periodic BSR-Timer parameter to the UE. The UE sets the retxBSR-Timer and the periodicBSR-Timer corresponding to the MeNB according to the parameters configured by the MeNB, and sets the retxBSR-Timer and the periodicBSR-Timer corresponding to the SeNB according to the parameters configured by the SeNB. Mode 3: The MeNB and the SeNB respectively configure the retxBSR-Timer parameter and the periodicBSR-Timer parameter for the UE, and the SeNB sends the retxBSR-Timer parameter and the periodicBSR-Timer parameter configured for the UE to the MeNB, where the MeNB and the SeNB are the UE. The configured retxBSR-Timer parameter and the periodicBSR-Timer parameter are sent to the UE through RRC signaling. The MeNB needs to carry the identification information of the relevant eNB when transmitting the retxBSR-Timer parameter and the periodicBSR-Timer parameter configured by the other eNB to the UE. The UE sets the retxBSR-Timer and the periodicBSR-Timer corresponding to the MeNB according to the parameters configured by the MeNB, and sets the retxBSR-Timer and the periodicBSR-Timer corresponding to the SeNB according to the parameters configured by the SeNB.

FIG. 5 is a schematic diagram of an uplink resource allocation process according to Embodiment 2 of the present invention. As shown in the figure, the process may include:

Step 501: The eNB obtains the BSR reported by the UE that carries the offload, and the BSR carries the sum of the uplink buffered data amounts of all the eNBs corresponding to the logical channel group of the UE;

Step 502: The eNB determines, by using other eNBs corresponding to the logical channel group, that each eNN corresponding to the logical channel group is the UE, and the amount of data to be scheduled for transmission, where all eNBs schedule data for the UE to transmit. The sum of the quantities does not exceed the sum of the amount of uplink buffered data reported by the UE;

Step 503: The eNB allocates an uplink transmission resource to the UE according to the amount of data that the eNB schedules transmission for the UE.

In step 501 of the foregoing process, the UE may report the BSR in the trigger mode of the per UE BSR, or report the BSR in the trigger mode of the per UE per e B. The triggering mode of the per-UE BSR means that the UE performs the triggering of the BSR on the eNB that needs to perform uplink data transmission.

If the BSR is reported in the trigger mode of the per-UE BSR, the BSR can be generated according to the R8 mode, or the BSR can be generated for each eNB. If the BSR triggering mode of the per UE per eNB is 4 艮 R, the RBs served by each eNB can be judged according to the BSR trigger type and trigger mode of the previous version of the R12.

Further, when the per UE BSR triggering mode is used, the UE may report the BSR to all the aggregated eNBs, or may report the BSRs to the MeNBs only, or report the BSRs when any of the aggregated eNBs have UL (uplink) resources. If the base station that receives the BSR is not the MeNB, the base station that receives the BSR report sends the BSR to the MeNB.

Further, when the per UE per eNB BSR trigger mode is used, the UE may pair the BSR of the per eNB. When e B has UL resources, it is reported to the corresponding e B; it can also be reported to other e B base stations, and then the other e Bs can interact with the eNBs and MeNBs corresponding to the per e B BSRs; The MeNB interacts with the e B corresponding to the per eNB BSR.

In particular, if the per UE per eNB BSR triggering mode is used, the UE still performs the BSR information of the same RB or the logical channel group for the RB or the logical channel group that supports the coordinated transmission of the multiple base stations. The information about the amount of data to be transmitted corresponding to the RB or the logical channel group is reported to the BSR regardless of the redundant reporting problem (that is, the BSR content of the corresponding eNB on the UE is the same, and is equal to the RB or the logical channel group needs to be transmitted. The sum of the amount of data).

In step 502 of the foregoing process, the MeNB can learn the uplink data amount that needs to be transmitted by the RB or the logical channel group supporting the bearer offloading, regardless of which trigger reporting manner the UE reports to the BSR in step 501. For example, as described above, the UE may report the B SR to the MeNB, and the UE may also report the B SR to the SeNB, and then the SeNB hands the B SR to the Me muscle.

For the RBs that support the simultaneous transmission of the different base stations, according to the BSR information reported by the UE carrying the offload, the MeNB may determine the amount of data scheduled to be transmitted by the RB or the logical channel group at each base station, and may also be carried by the MeNB and the offloaded bearer. The corresponding eNB negotiates to jointly determine the amount of data that the RB or logical channel group schedules to transmit on each base station. In particular, the size of the resource allocated by the eNB for the UE scheduling does not exceed the buffer size reported by the UE through the BSR.

During specific implementation, the scheduling offloading method may include the following:

Scheduling and offloading mode 1 : The MeNB performs scheduling data transmission according to the amount of resources reserved by the SeNB for the offloading bearer.

The SeNB may exchange the available resource size M or the data volume size reserved for the offloading bearer to the MeNB, and the information may be semi-statically interactive or dynamically interactive. The so-called semi-static interaction means: after the SeNB sends the reserved available resource size or data volume size to the MeNB, the available resource size or data size on the MeNB remains until the updated available resource size or data volume size is sent again. The so-called dynamic interaction means that: after receiving the BSR reported by the UE, the SeNB may exchange the available resource size M or the data volume size reserved by the SeNB for the offloading bearer to the MeNB (applicable to all eNBs corresponding to the UE to the offloaded bearer) Scenarios for reporting the BSR, or the SeNB may, according to the request of the MeNB, interact with the MeNB for the available resource size M or the amount of data to be reserved for the offloaded bearer (for the scenario where the UE reports the BSR to the MeNB or the SeNB reported by the receiving BSR) ). That is, in the dynamic interaction mode, each time the MeNB performs the scheduling transmission data amount allocation, the related eNB reports the resource reserved for the offloading bearer, or the amount of data.

As shown in FIG. 6A, the process of scheduling the offloading mode 1 may include:

Step 610: After the MeNB obtains the BSR reported by the UE, it corresponds to the buffer size reported by the BSR.

The RB or the logical channel group determines the SeNB corresponding to the RB or the logical channel group.

In a specific implementation, the MeNB can exchange the "corresponding relationship information between the RB and the base station" and the reported The RB or the logical channel group corresponding to the buffer size, or the eNB corresponding to the RB or the logical channel group (that is, which eNBs or the logical channel group are jointly carried by the eNB).

Step 611: The MeNB determines, according to the amount of resources reserved by the SeNB corresponding to the RB or the logical channel group, the amount of data that the Ee B and the MeNB schedule to transmit for the UE.

In a specific implementation, the MeNB may calculate the available resource reservation information M (in the scenario of the semi-static mode interaction reserved resource amount) in the SeNB, and calculate the available parameters on the SeNB according to the parameters such as the number of the PRB and the broadband MCS level. The amount of data of the UE transmitted, and the amount of data that needs to be transmitted in the MeNB and the SeNB, respectively, is determined according to the calculation result. For example, the amount of data to be transmitted by the eNB or the logical channel group calculated by the MeNB is: the amount of data corresponding to the RB or logical channel group to be transmitted data reported by the UE, or the calculated amount of data transmitted by the SeNB. size.

Step 612: The MeNB sends the SeNB calculated in step 502 to the SeNB for the amount of data scheduled to be transmitted by the UE, and instructs the SeNB to allocate uplink transmission resources to the UE accordingly.

In a specific implementation, the MeNB may send a notification message to the UE, where the identifier of the UE, the RB or the logical channel group identifier, the size of the uplink data to be transmitted on the SeNB, and the like are carried, and the SeNB is instructed to perform UE UL data scheduling transmission. Further, the SeNB may feed back the acknowledgement information of the notification to the MeNB, and perform scheduling according to the MeNB notification indication information.

Scheduling and splitting mode 2: The MeNB performs scheduling and transmission data amount allocation according to the transmission ratio of each eNB.

The MeNB can maintain the transmission ratio of all eNBs corresponding to the offload bearers of each UE. The source of this transmission ratio can be as follows:

Case 1: The MeNB and the SeNB can negotiate to determine the transmission ratio beforehand;

Case 2: The transmission ratio is configured in advance on the OAM (Operation Administration and Maintenance) system, and the MeNB can acquire the transmission ratio from the OAM system;

Case 3: The MeNB determines the transmission ratio according to the statistical result of the offload scheduling. For example, the MeNB determines the transmission ratio of each eNB according to the offload scheduling situation of each eNB in a previous period of time. Further, the transmission ratio of each eNB may be negotiated and adjusted at intervals according to the interference and/or load of the small area and the specific scheduling.

The above-mentioned transmission ratios maintained by the MeNB may be the same or different for each UE, and may be per UE or per UE per RB (or logical channel group).

As shown in FIG. 6B, the process of scheduling the offloading mode 1 may include:

Step 620: After obtaining the BSR reported by the UE, the MeNB determines, according to the RB or the logical channel group corresponding to the buffer size reported by the BSR, the SeNB corresponding to the RB or the logical channel group.

In a specific implementation, the MeNB may use an RB or a logical channel group corresponding to the reported buffer size and an eNB corresponding to the reported buffer size, or an eNB corresponding to the RB or the logical channel group (ie, the RB or the logic). Which eNBs are co-bearing transmissions of the channel group). Step 621: The MeNB determines, according to the transmission ratio of all the eNBs corresponding to the logical channel group of the UE, the amount of data scheduled to be transmitted by the SeNB and the MeNB for the UE.

In a specific implementation, the MeNB determines, according to the transmission ratio of each eNB corresponding to the offloading bearer of the UE, and the buffer size of the UE on the BSR, the amount of data scheduled to be transmitted by the eNB for the UE, where each eNB allocates The sum of the data size of the scheduled transmission does not exceed the buffer size of the UE through the BSR. For example, the size of the UE UL data volume allocated by the MeNB for the SeNB is: the RB or the buffer size *k corresponding to the logical channel group reported by the UE, and the size of the UL data of the UE allocated by the MeNB is: UE The reported RB or the logical channel corresponding to the buffer size * ( 1-k ) ), where k is the transmission ratio of the eNB.

Step 622: The MeNB sends the SeNB calculated in step 502 to the SeNB for the amount of data scheduled to be transmitted by the UE, and instructs the SeNB to allocate uplink transmission resources to the UE accordingly.

Scheduling and diverting mode 3: Optimization scheme for the above-mentioned scheduling diversion mode 1 and scheduling diversion mode 2

After the MeNB allocates the data amount of the scheduled transmission to each eNB, and the MeNB notifies the SeNB, the SeNB calculates the amount of data that the base station can actually schedule, and if the calculated base station actually calculates The amount of data that can be scheduled is different from that allocated by the MeNB to the SeNB, and the SeNB feeds back the amount of actual transmittable data (including the UE identity, the RB or the logical channel group identifier, the amount of uplink data of the UE that can be actually transmitted by the SeNB, etc.) to the MeNB. And the SeNB performs UE scheduling according to the actual schedulable data amount calculated by itself.

The MeNB adjusts the scheduled transmission situation of the UE on the MeNB according to the actual amount of transmittable data fed back by the SeNB.

Manner 4: The SeNB calculates the amount of data scheduled to be transmitted by the SeNB and sends the data to the MeNB, and the MeNB calculates the amount of data transmitted by the base station.

In the scenario that the UE reports the BSR to all the eNBs, or the UE reports the BSR to the corresponding eNB that transmits the RB or the logical channel group, the SeNB can calculate the amount of data that the base station can actually schedule for the UE according to the current situation, and feed back the information to the MeNB. The SeNB calculates the actual transmittable data volume size information (including the UE identifier, the RB or the logical channel group identifier, the UE uplink data volume size that the SeNB can actually transmit, and the like), and the SeNB performs the calculated actual schedulable data volume size. UE scheduling. The MeNB performs scheduled transmission on the base station according to the actual transmittable data volume size information and the BSR reported by the UE.

As can be seen from the description of the second embodiment, after the primary base station obtains the BSR reported by the terminal, according to the

The sum of the amount of uplink buffer data indicated by the BSR determines the amount of data allocated by each base station by negotiating with other base stations, and ensures that the sum of the amount of data allocated by each base station does not exceed the uplink buffered data reported by the terminal. Total amount And, so that each base station allocates uplink resources only to a part of the amount of uplink buffered data reported by the terminal, and reduces the allocation of the uplink resources to the sum of the uplink buffered data amounts reported by the terminal in the prior art. Waste, improve the efficiency of the use of air interface resources.

Based on the same technical concept, an embodiment of the present invention further provides a terminal device and a base station device.

FIG. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.

As shown in the figure, the terminal device may include: a buffer data management module 71, a BSR reporting module 72, where: a buffer data management module 71, configured to correspond to the logical channel according to multiple base stations corresponding to the logical channel The buffered data in the send buffer is distinguished;

The BSR reporting module 72 is configured to: send a BSR to the base station corresponding to the logical channel, and report the BSR to the base station corresponding to the logical channel, and receive the The amount of buffered data corresponding to the base station of the BSR is reported by the BSR to the base station that receives the BSR.

Specifically, the buffer data management module 71 may set, according to the multiple base stations corresponding to the logical channel, a plurality of sub-transmission buffers corresponding to the logical channels, where the multiple sub-transmission buffers are corresponding to the logical channels. Base station - Correspondingly, each sub-transmission buffer is used to store buffer data to be sent by the corresponding base station on the logical channel. Correspondingly, the BSR reporting module 72 may send the buffered data volume in the sub-send buffer corresponding to the base station of the BSR in the multiple sub-transmission buffers corresponding to the logical channel, and report the BSR to the receiving Base station of the BSR.

Specifically, the buffered data management module 71 may set an identifier for the buffered data in the transmit buffer corresponding to the logical channel, where the identifier is used to identify the base station corresponding to the buffered data. Correspondingly, the BSR reporting module 72 may report the buffered data amount of the base station that is the receiving the BSR to the receiving the BSR by using the BSR according to the identifier of the buffered data in the sending buffer corresponding to the logical channel. Base station.

Specifically, the BSR reporting module 72 may report the BSR to the base station that receives the BSR; or report the BSR to the primary base station, and instruct the primary base station to forward the BSR to the base station that receives the BSR; or, to the receiving station The base station other than the base station of the BSR reports the BSR, and instructs the other base station to forward the BSR to the base station that receives the BSR.

The foregoing terminal device may further include a determining module 73, configured to acquire, by using RRC signaling, a correspondence between the aggregated cell and the base station, and a correspondence between the logical channel group and the base station; and according to the aggregated cell and the base station Corresponding relationship, and a correspondence between the logical channel group and the base station, determining a plurality of base stations corresponding to the logical channel.

The foregoing terminal device may further include a timer setting module 74, configured to acquire, by using RRC signaling, corresponding to each base station.

The BSR timer parameter is configured to retransmit the BSR timer and the periodic BSR timer according to the obtained BSR timer parameter. The BSR timer parameter includes a retransmission BSR timer parameter and a periodic BSR timer parameter. corresponding,

The BSR reporting module 72 may also start or restart receiving the BSR after reporting the BSR to the base station corresponding to the logical channel.

The BSR base station corresponds to the retransmission BSR timer and the periodic BSR timer.

FIG. 8 is a schematic structural diagram of a base station device according to an embodiment of the present invention. As shown in the figure, the base station device may include: a receiving module 81, a negotiating module 82, and a resource allocating module 83, where: the receiving module 81 is configured to obtain a buffer status report BSR reported by the terminal that carries the offloading, where the BSR carries a sum of uplink buffered data amounts of all base stations corresponding to the logical channel group of the terminal;

The negotiation module 82 is configured to determine, by using the other base stations corresponding to the logical channel group, that the base stations corresponding to the logical channel group are scheduled to transmit data for the terminal, where each base station schedules transmission for the terminal. The sum of the amount of data does not exceed the sum of the amount of uplink buffered data on the terminal;

The resource allocation module 83 is configured to allocate an uplink transmission resource to the terminal according to the amount of data that the base station schedules to transmit for the terminal.

In an implementation manner, when the base station device is the primary base station device, the negotiation module 82 may determine, after obtaining the BSR on the terminal that carries the offload, the secondary base station corresponding to the logical channel group; according to the logical channel. The secondary base station corresponding to the group is the amount of resources reserved for the offloading bearer, determining the amount of data that the secondary base station and the primary base station are scheduled to transmit for the terminal; and sending, by the secondary base station, the amount of data scheduled for transmission by the terminal to the terminal And the secondary base station, and instructing the secondary base station to allocate an uplink transmission resource to the terminal according to the amount of data that the secondary base station schedules to transmit for the terminal.

In another implementation manner, when the base station device is the primary base station, the negotiation module 82 may determine, after obtaining the BSR on the terminal that carries the offload, the secondary base station corresponding to the logical channel group; The transmission ratio of all the base stations corresponding to the logical channel group, determining the amount of data scheduled to be transmitted by the secondary base station and the primary base station for the terminal; and transmitting, by the secondary base station, the amount of data scheduled for transmission by the terminal to the terminal The secondary base station is configured to instruct the secondary base station to allocate an uplink transmission resource to the terminal according to the amount of data that the secondary base station schedules to transmit for the terminal.

Further, the negotiation module 82 can obtain the transmission ratios of all the base stations corresponding to the logical channel group of the terminal in one of the following manners:

Further, the resource allocation module 83 may further send, after the secondary base station sends the data volume scheduled for transmission by the terminal to the secondary base station, the amount of data that the secondary base station feedbacks that the secondary base station actually allows for scheduled transmission; And adjusting, according to the amount of data that the secondary base station actually allows the scheduled transmission, the amount of data that the primary base station schedules to transmit for the terminal, and allocates an uplink transmission to the terminal according to the adjusted scheduled transmission data volume. Resources.

Specifically, the negotiation module 82 may receive, according to the BSR reported by the terminal, the amount of data scheduled to be transmitted by the terminal, according to the BSR reported by the terminal, and the amount of data scheduled to be transmitted by the terminal according to the secondary base station, and the The BSR reported by the terminal determines the amount of data that the primary base station schedules to transmit for the terminal. FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.

As shown, the terminal device can include: a processor 91, an upper port 92, wherein:

The processor 91 is configured to distinguish, according to the multiple base stations corresponding to the logical channel, the buffer data in the sending buffer corresponding to the logical channel;

The reporting port 92 is configured to report the BSR to the base station corresponding to the logical channel, and when reporting the BSR to the base station corresponding to the logical channel, pass the buffered data amount corresponding to the base station receiving the BSR in the corresponding transmission buffer of the logical channel. The BSR is reported to the base station that receives the BSR.

In a preferred mode, the processor 91 is configured to: set, according to multiple base stations corresponding to the logical channel, multiple sub-transmission buffers corresponding to the logical channel, and multiple sub-transmission buffers and multiple base stations corresponding to the logical channel— Correspondingly, each sub-transmission buffer is used to store the buffer data to be sent by the corresponding base station on the logical channel; correspondingly, the reporting port is specifically used to receive the BSR in multiple sub-transmission buffers corresponding to the logical channel. The amount of buffered data in the sub-slot buffer corresponding to the base station is reported to the base station receiving the BSR through the BSR.

In a preferred mode, the processor 91 is configured to: set an identifier for the buffered data in the sending buffer corresponding to the logical channel, and identify the base station that is used to identify the buffered data; correspondingly, the reporting port is specifically used to The amount of the buffered data of the base station that is the receiving BSR is reported to the base station that receives the BSR through the BSR according to the identifier of the buffered data in the sending buffer corresponding to the logical channel.

In a preferred manner, the reporting port 92 is specifically configured to: "3⁄4681" to the base station receiving the BSR; or report the BSR to the primary base station, and instruct the primary base station to forward the BSR to the base station receiving the BSR; or, to the receiving BSR The base station other than the base station transmits an SR, and instructs other base stations to forward the B SR to the base station receiving the B SR.

In a preferred mode, the processor 91 is further configured to: acquire, by using radio resource control RRC signaling, a correspondence between the aggregated cell and the base station, and a correspondence between the logical channel group and the base station; according to the aggregated cell and the The correspondence between the base stations and the correspondence between the logical channel groups and the base stations determine a plurality of base stations corresponding to the logical channels. In this way, the terminal can determine the correspondence between the logical channel and the base station, and further distinguish the transmission buffer data corresponding to the logical channel by the base station.

In a preferred mode, the processor 91 is further configured to: obtain a BSR timer parameter corresponding to each base station by using RRC signaling, and set a retransmission BSR timer and a periodic BSR timer according to the obtained BSR timer parameter; The BSR timer parameter includes a retransmission BSR timer parameter and a periodic BSR timer parameter. Correspondingly, the reporting port is further configured to: start or restart the retransmission BSR corresponding to the base station that receives the BSR after reporting the BSR to the base station corresponding to the logical channel. Timer and period BSR timer. The preferred solution provides a BSR timer configuration method to ensure normal BSR reporting.

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

As shown, the base station device can include: a receiving port 101, a processor 102, where:

The receiving port 101 is configured to obtain a buffer status report BSR reported by the terminal that carries the offload, and the BSR carries the terminal. The sum of the amount of uplink buffered data of all base stations corresponding to the logical channel group;

The processor 102 is configured to determine, by using the other base stations corresponding to the logical channel group, that the base stations corresponding to the logical channel group are scheduled to transmit data, wherein the sum of the data volumes scheduled and transmitted by each base station does not exceed the terminal. The sum of the uplink buffered data amount of the upper 4 ,, and the uplink transmission resource allocated to the terminal according to the amount of data scheduled to be transmitted by the base station for the terminal.

In a preferred mode, when the base station device is the primary base station device, the processor 102 is specifically configured to: after obtaining the BSR reported by the terminal that carries the offload, determine the secondary base station corresponding to the logical channel group; and the secondary base station corresponding to the logical channel group is The amount of the reserved resources is reserved for the bearer, and the amount of data that the secondary base station and the primary base station are scheduled to transmit for the terminal are determined; the data amount that the secondary base station schedules to transmit for the terminal is sent to the secondary base station, and the secondary base station is instructed to schedule the transmitted data according to the secondary base station. Quantity, allocates uplink transmission resources for the terminal.

In a preferred mode, when the base station device is the primary base station, the processor 102 is specifically configured to: after obtaining the BSR reported by the terminal that carries the offload, determine the secondary base station corresponding to the logical channel group; and all the base stations corresponding to the logical channel group of the terminal. The transmission ratio determines the amount of data that the secondary base station and the primary base station schedule to transmit for the terminal; sends the data amount that the secondary base station schedules to transmit to the secondary base station, and instructs the secondary base station to schedule the transmitted data according to the secondary base station as the terminal, and is the terminal Allocate uplink transmission resources.

In a preferred manner, the processor 102 is further configured to obtain, by using one of the following manners, a transmission ratio of all base stations corresponding to the logical channel group of the terminal:

The secondary base station corresponding to the logical channel group of the terminal negotiates the transmission ratio of all the base stations corresponding to the logical channel group of the terminal;

Obtaining the transmission ratios of all the base stations corresponding to the logical channel group of the terminal from the operation and maintenance management OAM system; determining the transmission ratio of all the base stations corresponding to the logical channel group of the terminal according to the statistical result of the traffic distribution scheduling. In a preferred mode, the processor 102 is further configured to: after sending, by the secondary base station, the amount of data scheduled for transmission by the secondary station to the secondary base station, and receiving the amount of data that the secondary base station that is fed back by the secondary base station actually allows the scheduled transmission; The secondary base station actually allows the amount of data to be scheduled to be transmitted, adjusts the amount of data that the primary base station schedules to transmit, and allocates uplink transmission resources to the terminal according to the adjusted amount of scheduled transmission data.

In a preferred mode, the processor 102 is configured to: receive, according to the BSR reported by the terminal, the amount of data that is scheduled to be transmitted by the secondary base station according to the BSR reported by the terminal;

The BSR determines the amount of data that the primary base station schedules to transmit for the terminal.

In summary, in the embodiment of the present invention, a large number of small cells can be deployed under the coverage of the macro cell, and the UE can transmit the data of the same EPS bearer on multiple eNBs by using a bearer offloading manner. The UE can simultaneously utilize resources of multiple eNBs when the inter-eNB uses a non-ideal link connection. The embodiment of the present invention solves the problem of redundant reporting caused by not discarding different eNB data in the buffer data reported in the BSR reporting in the prior art, thereby reducing waste of air interface resources and improving air interface resources. Utilization efficiency. Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention is in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each process and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Although the preferred embodiment of the invention has been described, it will be apparent to those of ordinary skill in the art that <RTIgt; Therefore, the appended claims are intended to be construed as including the preferred embodiments and the modifications

It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, it is intended that the present invention cover the modifications and modifications of the inventions

Claims

Rights request

1. A buffer status report BSR reporting method, characterized in that the method includes:

The terminal differentiates the buffered data in the transmission buffer corresponding to the logical channel according to the multiple base stations corresponding to the logical channel;

When the terminal sends a BSR to the base station corresponding to the logical channel, the amount of buffered data corresponding to the base station receiving the BSR in the transmission buffer corresponding to the logical channel is reported to the base station receiving the BSR through the BSR. BSR base station.

2. The method of claim 1, wherein the terminal differentiates the buffered data in the transmission buffer corresponding to the logical channel according to multiple base stations corresponding to the logical channel, including:

The terminal sets multiple sub-transmission buffers corresponding to the logical channel according to the multiple base stations corresponding to the logical channel. The multiple sub-transmission buffers correspond to the multiple base stations corresponding to the logical channel. Each sub-transmission buffer is in one-to-one correspondence. The buffer area is used to store the buffered data to be sent on the logical channel of the corresponding base station;

The amount of buffered data in the transmission buffer corresponding to the logical channel and corresponding to the base station receiving the BSR is reported to the base station receiving the BSR through the BSR, including:

The amount of buffered data in the multiple sub-transmission buffers corresponding to the logical channel and the sub-transmission buffer corresponding to the base station receiving the BSR is reported to the base station receiving the BSR through the BSR.

3. The method of claim 1, wherein the terminal differentiates the buffered data in the transmission buffer corresponding to the logical channel according to multiple base stations corresponding to the logical channel, including:

The terminal sets an identifier for the buffered data in the transmission buffer corresponding to the logical channel, and the identifier is used to identify the base station corresponding to the buffered data;

According to the identification of the buffered data in the transmission buffer corresponding to the logical channel, the amount of buffered data identified as the base station receiving the BSR is reported to the base station receiving the BSR through the BSR.

4. The method of claim 1, wherein the terminal reports the BSR to the base station corresponding to the logical channel in one of the following ways:

The terminal reports the BSR to the base station that receives the BSR; or

The terminal transmits the BSR to the main base station and instructs the main base station to forward the BSR to the base station that receives the BSR; or

The terminal reports the BSR to other base stations other than the base station that received the BSR, and instructs the other base stations to forward the BSR to the base station that received the BSR.

5. The method according to any one of claims 1 to 4, characterized in that the terminal differentiates the buffered data in the buffer zone corresponding to the logical channel according to multiple base stations corresponding to the logical channel. Previously, it also included: The terminal obtains the corresponding relationship between the aggregated cells and the base station, and the corresponding relationship between the logical channel group and the base station through radio resource control RRC signaling;

According to the corresponding relationship between the aggregated cells and the base stations, and the corresponding relationship between the logical channel group and the base stations, multiple base stations corresponding to the logical channels are determined.

6. The method according to any one of claims 1 to 4, further comprising:

The terminal obtains the BSR timer parameters corresponding to each base station through RRC signaling, and sets a retransmission BSR timer and a periodic BSR timer according to the obtained BSR timer parameters; wherein, the BSR timer parameters include retransmission BSR timing. device parameters and periodic BSR timer parameters;

After the terminal reports the BSR to the base station corresponding to the logical channel, it also includes:

The terminal starts or restarts the retransmission BSR timer and periodic BSR timer corresponding to the base station that receives the BSR.

7. The method of claim 6, wherein the terminal obtains the BSR timer parameters corresponding to each base station through RRC signaling, and sets the retransmission BSR timer and periodic BSR timing according to the obtained BSR timer parameters. devices, including:

The terminal obtains the BSR timer parameters configured by the main base station for the terminal through the RRC signaling sent by the main base station, and sets the retransmission BSR timer and periodic BSR timer for each base station according to the obtained BSR timer parameters. ; or

The terminal obtains the BSR timer parameters configured by the primary base station for the terminal through RRC signaling sent by the primary base station, and obtains the BSR timer parameters configured by the secondary base station for the terminal through RRC signaling sent by the secondary base station. , set a retransmission BSR timer and a periodic BSR timer for each primary base station according to the BSR timer parameters sent by the primary base station, and set a retransmission BSR timer for the secondary base station according to the BSR timer parameters sent by the secondary base station. and periodic BSR timer; or

The terminal obtains the BSR timer parameters configured by the main base station and the secondary base station respectively for the terminal through the RRC signaling sent by the main base station, and sets the main base station according to the obtained BSR timer parameters configured by the main base station. The base station retransmits the BSR timer and the periodic BSR timer, and sets the secondary base station retransmission BSR timer and the periodic BSR timer according to the obtained BSR timer parameters configured by the secondary base station; wherein, the secondary base station will be The BSR timer parameters configured by the terminal are sent to the main base station; or

The terminal obtains the BSR timer parameters configured by the secondary base station and the primary base station respectively for the terminal through the RRC signaling sent by the secondary base station, and sets the secondary base station according to the obtained BSR timer parameters configured by the secondary base station. The base station retransmits the BSR timer and the periodic BSR timer, and sets the main base station retransmission BSR timer and the periodic BSR timer according to the acquired BSR timer parameters configured by the main base station; wherein, the main base station will be The BSR timer parameters configured by the terminal are sent to the secondary base station.

8. A terminal device, characterized by including:

Buffer data management module, used to send data corresponding to the logical channel according to multiple base stations corresponding to the logical channel. Buffer data in the buffer are distinguished;

The BSR module is configured to transmit the BSR to the base station corresponding to the logical channel, and when reporting the BSR to the base station corresponding to the logical channel, receive the BSR in the sending buffer corresponding to the logical channel. The amount of buffered data corresponding to the base station of the BSR is reported through the BSR to the base station that receives the BSR.

9. The terminal device according to claim 8, wherein the buffer data management module is specifically configured to set multiple sub-transmission buffers corresponding to the logical channel according to the multiple base stations corresponding to the logical channel, The plurality of sub-transmitting buffers are in one-to-one correspondence with multiple base stations corresponding to the logical channel, and each sub-transmitting buffer is used to store buffered data to be sent by the corresponding base station on the logical channel;

The BSR module is specifically used to report the amount of buffered data in the multiple sub-transmission buffers corresponding to the logical channel and the sub-transmission buffer corresponding to the base station receiving the BSR to the receiver through the BSR. The BSR base station.

10. The terminal device according to claim 8, wherein the buffered data management module is specifically configured to set an identifier for the buffered data in the transmission buffer corresponding to the logical channel, and the identifier is used to identify The base station corresponding to the buffered data;

The BSR module is specifically configured to report the amount of buffered data identified as the base station receiving the BSR to the base station receiving the BSR according to the identification of the buffered data in the transmission buffer corresponding to the logical channel. BSR base station.

11. The terminal device according to claim 8, wherein the BSR reporting module is specifically configured to report the BSR to the base station that receives the BSR; or, report the BSR to the main base station, and instruct the main base station to The BSR is forwarded to the base station that receives the BSR; or, the BSR is reported to other base stations other than the base station that receives the BSR, and the other base stations are instructed to forward the BSR to the base station that receives the BSR.

12. The terminal device according to any one of claims 8-11, further comprising:

Determining module, configured to obtain the correspondence between the aggregated cells and the base station, and the correspondence between the logical channel group and the base station through radio resource control RRC signaling; according to the correspondence between the aggregated cells and the base station, and the corresponding relationship between the logical channel group and the base station to determine multiple base stations corresponding to the logical channel.

13. The terminal device according to any one of claims 8-11, further comprising:

The timer setting module is used to obtain the BSR timer parameters corresponding to each base station through RRC signaling, and set the retransmission BSR timer and the periodic BSR timer according to the obtained BSR timer parameters; wherein, the BSR timer parameters include Retransmit BSR timer parameters and periodic BSR timer parameters;

The BSR module is also configured to, after transmitting the BSR to the base station corresponding to the logical channel, start or restart the retransmission BSR timer and periodic BSR timer corresponding to the base station that receives the BSR.

14. An uplink resource allocation method, characterized in that the method includes:

The base station obtains the buffer status report BSR reported by the terminal carrying the offload, and the BSR carries the sum of the uplink buffered data amounts of all base stations corresponding to the logical channel group of the terminal;

The base station determines that the logical channel group corresponds to the base station by negotiating with other base stations corresponding to the logical channel group. The amount of data that each base station schedules to transmit for the terminal, wherein the total amount of data that all base stations schedule to transmit for the terminal does not exceed the total amount of uplink buffered data reported by the terminal;

The base station allocates uplink transmission resources to the terminal according to the amount of data that the base station schedules to transmit for the terminal.

15. The method of claim 14, wherein the base station determines, through negotiation with other base stations corresponding to the logical channel group, that each base station corresponding to the logical channel group schedules and transmits data for the terminal. Amount, including:

After the primary base station obtains the BSR on the terminal that carries the offload, it determines the secondary base station corresponding to the logical channel group; the main base station determines the secondary base station corresponding to the logical channel group according to the amount of resources reserved for the offload bearer by the secondary base station corresponding to the logical channel group. The secondary base station and the primary base station schedule the amount of data to be transmitted for the terminal;

The primary base station sends the secondary base station the amount of data that the secondary base station schedules to transmit for the terminal, and instructs the secondary base station to schedule the secondary base station to transmit according to the amount of data that the secondary base station schedules for the terminal. Allocate uplink transmission resources.

16. The method of claim 14, wherein the base station determines, through negotiation with other base stations corresponding to the logical channel group, that each base station corresponding to the logical channel group schedules and transmits data for the terminal. Amount, including:

After the primary base station obtains the BSR of the terminal carrying the offload, it determines the secondary base station corresponding to the logical channel group; the primary base station determines the secondary base station according to the transmission ratio of all base stations corresponding to the logical channel group of the terminal. The secondary base station and the primary base station schedule the amount of data to be transmitted for the terminal;

17. The method of claim 16, wherein the master base station obtains the transmission proportions of all base stations corresponding to the logical channel group of the terminal in one of the following ways:

The primary base station and the secondary base station corresponding to the logical channel group of the terminal negotiate the transmission ratio of all base stations corresponding to the logical channel group of the terminal;

The main base station obtains the transmission ratio of all base stations corresponding to the logical channel group of the terminal from the operation and maintenance management OAM system;

The main base station determines the transmission proportions of all base stations corresponding to the logical channel group of the terminal based on the statistical results of offload scheduling.

18. The method according to claim 15 or 16, characterized in that, after the main base station sends the amount of data scheduled to be transmitted by the secondary base station for the terminal to the secondary base station, it further includes:

The primary base station receives the amount of data that the secondary base station actually allows for scheduled transmission fed back by the secondary base station; the primary base station adjusts the primary base station based on the amount of data that the secondary base station actually allows for scheduled transmission fed back by the secondary base station. The base station schedules the amount of data to be transmitted for the terminal, and allocates the amount of data to the terminal according to the adjusted amount of scheduled transmission data. Line transmission resources.

19. The method of claim 14, wherein the base station determines, through negotiation with other base stations corresponding to the logical channel group, that each base station corresponding to the logical channel group schedules and transmits data for the terminal. Amount, including:

The primary base station receives the amount of data scheduled for transmission by the terminal determined by the secondary base station based on the BSR reported by the terminal; the primary base station determines the amount of data scheduled for transmission by the terminal based on the BSR reported by the secondary base station, and the terminal The reported BSR determines the amount of data that the master base station schedules for transmission for the terminal.

20. A base station equipment, characterized by including:

The receiving module is configured to obtain the buffer status report BSR reported by the terminal carrying the offload, where the BSR carries the sum of the uplink buffered data amounts of all base stations corresponding to the logical channel group of the terminal;

A negotiation module, configured to determine the amount of data that each base station corresponding to the logical channel group schedules to transmit for the terminal through negotiation with other base stations corresponding to the logical channel group, wherein each base station schedules to transmit for the terminal. The total amount of data does not exceed the total amount of uplink buffered data on the terminal;

A resource allocation module, configured to allocate uplink transmission resources to the terminal according to the amount of data scheduled to be transmitted by the base station for the terminal.

21. The base station equipment according to claim 20, characterized in that, when the base station equipment is the main base station equipment, the negotiation module is specifically configured to determine the logic after obtaining the BSR on the terminal carrying offloading. The secondary base station corresponding to the channel group; Determine the amount of data that the secondary base station and the primary base station schedule to transmit for the terminal according to the amount of resources reserved by the secondary base station corresponding to the logical channel group for the offload bearer; The base station sends the amount of data scheduled for transmission by the terminal to the secondary base station, and instructs the secondary base station to allocate uplink transmission resources to the terminal according to the amount of data scheduled for transmission by the secondary base station for the terminal.

22. The base station equipment according to claim 20, characterized in that, when the base station equipment is the main base station, the negotiation module is specifically configured to determine the corresponding logical channel group after obtaining the BSR reported by the terminal carrying offloading. the secondary base station; according to the transmission ratio of all base stations corresponding to the logical channel group of the terminal, determine the amount of data that the secondary base station and the primary base station schedule to transmit for the terminal; assign the secondary base station to the The amount of data scheduled to be transmitted by the terminal is sent to the secondary base station, and the secondary base station is instructed to allocate uplink transmission resources to the terminal according to the amount of data scheduled to be transmitted by the secondary base station for the terminal.

23. The base station equipment according to claim 22, wherein the negotiation module is further configured to obtain the transmission ratio of all base stations corresponding to the logical channel group of the terminal in one of the following ways:

The secondary base station corresponding to the logical channel group of the terminal negotiates the transmission ratio of all base stations corresponding to the logical channel group of the terminal;

Obtain the transmission proportions of all base stations corresponding to the logical channel group of the terminal from the operation and maintenance management OAM system; The transmission proportions of all base stations corresponding to the logical channel group of the terminal are determined according to the statistical results of offload scheduling.

24. The base station equipment according to claim 21 or 22, wherein the resource allocation module is further configured to: after sending the amount of data scheduled to be transmitted by the secondary base station for the terminal to the secondary base station, receive The amount of data that the secondary base station actually allows for scheduled transmission fed back by the secondary base station; according to the amount of data that the secondary base station actually allows for scheduled transmission fed back by the secondary base station, adjust the data that the primary base station schedules for transmission for the terminal amount, and allocate uplink transmission resources to the terminal according to the adjusted scheduled transmission data amount.

25. The base station equipment according to claim 20, wherein the negotiation module is specifically configured to: receive the amount of data scheduled to be transmitted by the terminal determined by the secondary base station according to the BSR reported by the terminal; according to the The amount of data reported by the secondary base station for transmission scheduled by the terminal, and the BSR reported by the terminal, determine the amount of data scheduled for transmission by the primary base station for the terminal.