CN104349461B

CN104349461B - A kind of uplink resource allocating method and its equipment

Info

Publication number: CN104349461B
Application number: CN201310320112.0A
Authority: CN
Inventors: 吴昱民; 付喆
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2013-07-26
Filing date: 2013-07-26
Publication date: 2019-02-22
Anticipated expiration: 2033-07-26
Also published as: WO2015010647A1; CN104349461A

Abstract

The embodiment of the invention discloses a kind of uplink resource allocating method and its equipment.In the present invention, terminal is distinguished according to the corresponding multiple base stations of logic channel, the buffered data sent in buffer area corresponding to the logic channel；When the terminal reports BSR to the corresponding base station of the logic channel, by the corresponding corresponding amount of buffered data in base station for sending in buffer area, receiving the BSR of the logic channel, the base station for receiving the BSR is reported to by BSR.The buffer area data volume reported can be solved the problems, such as to carry out giving the correct time on BSR in the prior art since the redundancy not distinguishing different eNB data and generating reports using the present invention, to reduce the waste for interface-free resources, improve the utilization efficiency of interface-free resources.

Description

Uplink resource allocation method and equipment thereof

Technical Field

The present invention relates to the field of wireless communications, and in particular, to an uplink resource allocation method and apparatus.

Background

With the deployment of more and more home base stations, micro cells, relays and other local nodes, the traditional network architecture mainly based on macro base stations gradually evolves to a network architecture with more types of base stations coexisting, and provides more levels of network coverage. In order to improve the related performance under the multi-type base station coexistence network architecture, a network architecture that implements cooperation/aggregation among multiple enbs (evolved nodebs, i.e., base stations) through non-ideal links is proposed. Under the architecture, a part of RBs (Radio Bearer) of a UE (User Equipment, i.e., a terminal) is on an MCell (Master Cell) managed by a MeNB (Master eNB, a Master base station), the part of RBs includes a SRB (Signaling Radio Bearer, i.e., a control plane Bearer) and a DRB (Data Radio Bearer, i.e., a User plane Bearer), and another part of bearers (including the SRB and the DRB) of the same UE is on an SCell (Secondary Cell) managed by a SeNB (Secondary eNB, a Secondary base station).

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

When the UE carries out bearer separation, the same EPS bearer can simultaneously carry out data receiving and sending through the MeNB and the SeNB through bearer shunting.

Fig. 2 illustrates the sending of uplink Data, where, at the UE side, there are independent RLC (radio link Control) bearers for the SeNB and the MeNB, respectively, and a PDCP (Packet Data Convergence Protocol) entity of the UE sends Control Data on the SeNB and/or the MeNB through flow Control scheduling. On the network side, the PDCP entity corresponding to the UE is on the MeNB, and the MeNB serves as an anchor point to uniformly send data from the MeNB and the SeNB to an S-GW (Serving-GateWay) through an S1-U interface.

Fig. 3 illustrates the transmission of uplink data, where on the UE side, there is only one RLC bearer, and the RLC entity of the UE transmits the flow control scheduling control data 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 is used as an anchor point to uniformly send data from the MeNB and the SeNB to the S-GW through the S1-U.

Both an LTE (Long Term Evolution ) system and an LTE-a (Advanced Long Term Evolution, evolved LTE) system are scheduling-based systems, a base station allocates time-frequency resources required for data transmission to a UE, and the UE receives downlink data or transmits uplink data according to a scheduling command of the base station. After determining the uplink resource allocation, the base station scheduler notifies the UE through a UL grant (uplink scheduling grant). The base station scheduler performs uplink resource allocation according to an uplink data amount to be transmitted by the UE, that is, a Buffer Status (Buffer Size) of the UE, and the Buffer Status of the UE is reported to the base station by the UE through a BSR (Buffer Status Report).

Under the condition of bearer splitting, when the conventional BSR reporting is adopted, the BSR reporting is caused to be performed on the MeNB and the SeNB by the UE, and the size of the buffer data reported to each eNB exceeds the size of the data which needs to be actually transmitted on the eNB, so that when the network side allocates uplink resources to the UE according to the size of the buffer data reported by the UE, the uplink resources exceeding the actual needs of the UE are allocated, and resource waste is caused.

Therefore, in the bearer splitting manner, the conventional method for calculating the size of the buffer in BSR reporting cannot be used normally, so that the network side cannot correctly allocate appropriate uplink resources according to the size of the buffer reported by the UE.

Disclosure of Invention

The embodiment of the invention provides an uplink resource allocation method and equipment thereof, which are used for enabling the data volume of a buffer area reported to each base station to be the data volume which needs to be actually sent on the base station under a network architecture with separated bearing.

The uplink resource allocation method provided by the embodiment of the invention comprises the following steps: the terminal distinguishes the buffer data in the sending buffer zone corresponding to the logic channel according to a plurality of base stations corresponding to the logic channel; and when reporting the BSR to the base station corresponding to the logical channel, the terminal reports the buffer data volume corresponding to the base station receiving the BSR in the sending buffer corresponding to the logical channel to the base station receiving the BSR through the BSR.

According to the scheme, the terminal distinguishes the buffer data in the sending buffer zone corresponding to the logical channel according to the plurality of base stations corresponding to the logical channel, and reports the buffer data amount corresponding to the base station for the base station when reporting the BSR to the base station, so that the buffer data amount corresponding to the base station is reported for different base stations, namely, the buffer zone data size reported to each base station is the size of data which needs to be sent on the base station actually, and therefore the base station distributes uplink resources according to the size of the data which needs to be sent on the base station actually.

In a preferred implementation, the distinguishing, by the terminal, the buffered data in the transmission buffer corresponding to the logical channel according to a plurality of base stations corresponding to the logical channel includes: the terminal sets a plurality of sub-sending buffers corresponding to the logical channel according to a plurality of base stations corresponding to the logical channel, the sub-sending buffers correspond to the base stations corresponding to the logical channel one by one, and each sub-sending buffer is used for storing buffer data to be sent of the corresponding base station on the logical channel; correspondingly, reporting the buffer data amount corresponding to the base station receiving the BSR in the transmission buffer corresponding to the logical channel to the base station receiving the BSR through the BSR, including: and reporting the buffer data volume in the sub transmission buffers corresponding to the base station receiving the BSR in the plurality of sub transmission buffers corresponding to the logical channel to the base station receiving the BSR through the BSR.

It can be seen from the above preferred solution that, by dividing sub-buffers for each base station, uplink buffer data of different base stations can be stored in corresponding sub-buffers, thereby facilitating calculation of uplink buffer data amount corresponding to the base station.

In a preferred implementation manner, the distinguishing, by the terminal, the buffered data in the transmission buffer corresponding to the logical channel according to a plurality of base stations corresponding to the logical channel includes: the terminal sets an identifier for the buffering data in the sending buffer zone corresponding to the logical channel, wherein the identifier is used for identifying the base station corresponding to the buffering data; correspondingly, reporting the buffer data amount corresponding to the base station receiving the BSR in the transmission buffer corresponding to the logical channel to the base station receiving the BSR through the BSR, including: and reporting the buffer data volume of the base station marked as the BSR to the base station receiving the BSR through the BSR according to the mark of the buffer data in the sending buffer corresponding to the logical channel.

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

In a preferred implementation scheme, the terminal reports a BSR to a base station corresponding to the logical channel in one of the following manners:

the terminal reports the BSR to a base station receiving the BSR; or

The terminal reports a BSR to a main base station and instructs the main base station to forward the BSR to a base station receiving the BSR; or

And the terminal reports the BSR to other base stations except the base station receiving the BSR and indicates the other base stations to forward the BSR to the base station receiving the BSR.

The preferred scheme provides a flexible BSR reporting mode.

In a preferred embodiment, before the terminal distinguishes the buffered data in the buffer corresponding to the logical channel according to a plurality of base stations corresponding to the logical channel, the method further includes: the terminal acquires the corresponding relation between the aggregated cells and the base station and the corresponding relation between the logical channel group and the base station through RRC signaling; and determining a plurality of base stations corresponding to the logical channels according to the corresponding relation between the aggregated cell and the base stations and the corresponding relation between the logical channel group and the base stations. Therefore, the terminal can determine the corresponding relation between the logical channel and the base station, and further distinguish the sending buffer data corresponding to the logical channel aiming at the base station.

In a preferred embodiment, the method further comprises: the terminal acquires 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 acquired BSR timer parameters; wherein the BSR timer parameters include a retransmission BSR timer parameter and a periodic BSR timer parameter; correspondingly, after the terminal reports a BSR to the base station corresponding to the logical channel, the method further includes: and the terminal starts or restarts a retransmission BSR timer and a periodic BSR timer corresponding to the base station receiving the BSR. The preferred scheme provides a configuration method of the BSR timer, and ensures the normal operation of BSR reporting.

Further, the terminal acquires 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 acquired BSR timer parameters, including:

the terminal acquires BSR timer parameters configured for the terminal by the main base station through RRC signaling sent by the main base station, and sets a retransmission BSR timer and a periodic BSR timer for each base station according to the acquired BSR timer parameters; or

The terminal acquires BSR timer parameters configured for the terminal by a main base station through RRC signaling sent by the main base station, acquires BSR timer parameters configured for the terminal by an auxiliary base station through RRC signaling sent by the auxiliary base station, sets a retransmission BSR timer and a periodic BSR timer for each main base station according to the BSR timer parameters sent by the main base station, and sets a retransmission BSR timer and a periodic BSR timer for the auxiliary base station according to the BSR timer parameters sent by the auxiliary base station; or

The terminal acquires BSR timer parameters respectively configured for the terminal by the main base station and the auxiliary base station through RRC signaling sent by the main base station, sets a main base station retransmission BSR timer and a periodic BSR timer according to the acquired BSR timer parameters configured by the main base station, and sets an auxiliary base station retransmission BSR timer and a periodic BSR timer according to the acquired BSR timer parameters configured by the auxiliary base station; the secondary base station sends the BSR timer parameter configured for the terminal to the main base station; or

The terminal acquires BSR timer parameters respectively configured for the terminal by the auxiliary base station and the main base station through RRC signaling sent by the auxiliary base station, sets a BSR retransmission timer and a periodic BSR timer of the auxiliary base station according to the acquired BSR timer parameters configured by the auxiliary base station, and sets a BSR retransmission timer and a periodic BSR timer of the main base station according to the acquired BSR timer parameters configured by the main base station; and the main base station sends the BSR timer parameter configured for the terminal to the secondary base station.

The preferred scheme described above provides a flexible BSR timer setting method.

Another embodiment of the present invention provides a terminal device, including:

the buffer data management module is used for distinguishing the buffer data in the sending buffer area corresponding to the logic channel according to a plurality of base stations corresponding to the logic channel;

and a BSR reporting module, configured to report a BSR to the base station corresponding to the logical channel, and when reporting the BSR to the base station corresponding to the logical channel, report a buffer data amount corresponding to the base station receiving the BSR in a sending buffer corresponding to the logical channel to the base station receiving the BSR through the BSR.

In a preferred mode, the buffered data management module is specifically configured to set, according to a plurality of base stations corresponding to a logical channel, a plurality of sub-transmission buffers corresponding to the logical channel, where the plurality of sub-transmission buffers correspond to the plurality of base stations corresponding to the logical channel one to one, and each sub-transmission buffer is used to store buffered data to be sent of a corresponding base station on the logical channel; correspondingly, the BSR reporting module is specifically configured to report, to the base station receiving the BSR, the buffer data amount in the sub transmission buffers corresponding to the base station receiving the BSR in the plurality of sub transmission buffers corresponding to the logical channels.

In a preferred mode, the buffered data management module is specifically configured to set an identifier for buffered data in a sending buffer corresponding to a logical channel, where the identifier is used to identify a base station corresponding to the buffered data; correspondingly, the BSR reporting module is specifically configured to report, according to the identifier of the buffered data in the transmission buffer corresponding to the logical channel, the buffered data amount identified as the base station receiving the BSR to the base station receiving the BSR through 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 reporting a BSR to a main base station, and instructing the main base station to forward the BSR to a base station receiving the BSR; or reporting the BSR to other base stations except the base station receiving the BSR, and instructing the other base stations to forward the BSR to the base station receiving the BSR.

The preferred scheme provides a flexible BSR reporting mode.

In a preferred mode, the method further includes: a determining module, configured to obtain, through 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; and determining a plurality of base stations corresponding to the logical channels according to the corresponding relation between the aggregated cell and the base stations and the corresponding relation between the logical channel group and the base stations. Therefore, the terminal can determine the corresponding relation between the logical channel and the base station, and further distinguish the sending buffer data corresponding to the logical channel aiming at the base station.

In a preferred mode, the method further includes: the timer setting module is used for acquiring BSR timer parameters corresponding to each base station through RRC signaling, and setting a retransmission BSR timer and a periodic BSR timer according to the acquired BSR timer parameters; wherein the BSR timer parameters include a retransmission BSR timer parameter and a periodic BSR timer parameter; correspondingly, the BSR reporting module is further configured to start or restart a BSR retransmission timer and a BSR cycle timer corresponding to the base station receiving the BSR after reporting the BSR to the base station corresponding to the logical channel. The preferred scheme provides a configuration method of the BSR timer, and ensures the normal operation of BSR reporting.

Another embodiment of the present invention provides an uplink resource allocation method and device, so as to allocate uplink resources to a offload bearer of a terminal through negotiation between base stations corresponding to the offload bearer in a network architecture with separate bearers, so that a total amount of data scheduled and transmitted by each terminal for the terminal does not exceed a total amount of uplink buffered data reported by the terminal.

The uplink resource allocation method provided by the embodiment of the invention comprises the following steps:

a base station obtains a Buffer Status Report (BSR) reported by a terminal carrying flow distribution, wherein the BSR carries the sum of uplink buffer data volumes of all base stations corresponding to a logic channel group of the terminal; the base station determines the data amount scheduled and transmitted for the terminal by each base station corresponding to the logical channel group through negotiation with other base stations corresponding to the logical channel group, wherein the sum of the data amounts scheduled and transmitted for the terminal by all the base stations does not exceed the sum of uplink buffer data amounts reported by the terminal; and the base station allocates uplink transmission resources for the terminal according to the data volume scheduled and transmitted by the base station for the terminal.

It can be seen from the above method that, after the primary base station obtains the BSR reported by the terminal, the data amount allocated by each base station is determined in a manner of negotiating with other base stations according to the total amount of uplink buffered data indicated by the BSR, and the total amount of data allocated by each base station is guaranteed not to exceed the total amount of uplink buffered data reported by the terminal, so that each base station allocates uplink resources to only a part of the amount of uplink buffered data reported by the terminal.

In a preferred mode, the determining, by the base station negotiating with other base stations corresponding to the logical channel group, an amount of data scheduled to be transmitted by each base station corresponding to the logical channel group for the terminal by the base station includes:

after the main base station obtains the BSR reported by the terminal carrying the shunt, the auxiliary base station corresponding to the logic channel group is determined; the main base station determines the data quantity scheduled and transmitted by the auxiliary base station and the main base station for the terminal according to the resource quantity reserved for the shunt bearer by the auxiliary base station corresponding to the logic channel group; and the main base station sends the data volume scheduled and transmitted by the auxiliary base station for the terminal to the auxiliary base station, and instructs the auxiliary base station to allocate uplink transmission resources for the terminal according to the data volume scheduled and transmitted by the auxiliary base station for the terminal.

It can be seen from the above preferred manner that resources are reserved for the offload bearer by the auxiliary base station and reported to the main base station, so that the main base station can determine the data amount scheduled and transmitted by each base station for the terminal, and ensure that the sum of the data amounts allocated by each base station does not exceed the sum of the uplink buffer data amounts reported by the terminal, so that each base station allocates uplink resources only to a part of the uplink buffer data amounts reported by the terminal, thereby reducing waste of air interface resources and improving utilization efficiency of air interface resources.

In a preferred scheme, the determining, by the base station negotiating with other base stations corresponding to the logical channel group, an amount of data scheduled to be transmitted by each base station corresponding to the logical channel group for the terminal by the base station includes:

after the main base station obtains the BSR reported by the terminal carrying the shunt, the auxiliary base station corresponding to the logic channel group is determined; the main base station determines the data quantity scheduled and transmitted by the auxiliary base station and the main base station for the terminal according to the transmission proportion of all base stations corresponding to the logical channel group of the terminal; and the main base station sends the data volume scheduled and transmitted by the auxiliary base station for the terminal to the auxiliary base station, and instructs the auxiliary base station to allocate uplink transmission resources for the terminal according to the data volume scheduled and transmitted by the auxiliary base station for the terminal.

It can be seen from the above preferred solution that the main base station allocates scheduling transmission data volume to each base station according to the transmission proportion of each base station, and ensures that the sum of the data volumes allocated by each base station does not exceed the sum of the uplink buffer data volume reported by the terminal, so that each base station allocates uplink resources to only a part of the uplink buffer data volume reported by the terminal, which reduces the waste of air interface resources and improves the utilization efficiency of air interface resources.

In a preferred scheme, the main base station obtains the transmission ratios of all base stations corresponding to the logical channel group of the terminal by one of the following methods:

the main base station and the auxiliary base station corresponding to the logical channel group of the terminal negotiate the transmission proportion of all base stations corresponding to the logical channel group of the terminal;

the main base station acquires the transmission proportion of all base stations corresponding to the logical channel group of the terminal from an operation, maintenance and administration (OAM) system;

and the main base station determines the transmission proportion of all base stations corresponding to the logic channel group of the terminal according to the statistical result of the shunting scheduling.

The preferred scheme provides various modes for acquiring the transmission proportion of the base station, and improves the flexibility of the system.

In a preferred embodiment, after the master base station sends, to the secondary base station, the data amount scheduled by the secondary base station for transmission by the terminal, the method further includes: the main base station receives the data volume which is fed back by the auxiliary base station and actually allowed to be scheduled and transmitted by the auxiliary base station; and the main base station adjusts the data amount scheduled and transmitted by the main base station for the terminal according to the data amount actually allowed to be scheduled and transmitted by the auxiliary base station and fed back by the auxiliary base station, and allocates uplink transmission resources for the terminal according to the adjusted data amount scheduled and transmitted.

According to the preferable scheme, the auxiliary base station feeds back the data quantity which can be actually scheduled and transmitted to the main base station, so that the auxiliary base station can not schedule and transmit the data quantity, and the main base station performs scheduling and transmission, and the reliability is improved.

In a preferred mode, the determining, by the base station negotiating with other base stations corresponding to the logical channel group, an amount of data scheduled to be transmitted by each base station corresponding to the logical channel group for the terminal by the base station includes: the main base station receives the data volume scheduled and transmitted for the terminal, which is determined by the auxiliary base station according to the BSR reported by the terminal; and the main base station determines the data quantity scheduled and transmitted by the main base station for the terminal according to the data quantity reported by the auxiliary base station and the BSR reported by the terminal.

It can be seen from the above preferred solution that the secondary base stations respectively calculate the data amount scheduled and transmitted for the terminal and report the data amount to the primary base station, and the primary base station calculates the data amount scheduled and transmitted for the terminal according to the BSR reported by the terminal and the transmitted data amount reported by each base station, and ensures that the total amount of data allocated by each base station does not exceed the total amount of uplink buffer data amount reported by the terminal, so that each base station allocates uplink resources only to a part of the uplink buffer data amount reported by the terminal, thereby reducing the waste of air interface resources and improving the utilization efficiency of air interface resources.

The base station device provided by the embodiment of the invention comprises:

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

a negotiation module, configured to perform negotiation with other base stations corresponding to the logical channel group, and determine a data amount scheduled and transmitted by each base station corresponding to the logical channel group for the terminal, where a sum of the data amounts scheduled and transmitted by each base station for the terminal does not exceed a sum of uplink buffer data amounts reported by the terminal;

and the resource allocation module is used for allocating uplink transmission resources to the terminal according to the data volume scheduled and transmitted by the base station for the terminal.

In a preferred mode, when the base station device is a primary base station device, the negotiation module is specifically configured to determine a secondary base station corresponding to the logical channel group after obtaining a BSR reported by a terminal carrying traffic distribution; determining the data quantity of the auxiliary base station and the main base station for scheduling transmission for the terminal according to the resource quantity reserved for the shunt bearer by the auxiliary base station corresponding to the logical channel group; and sending the data volume scheduled and transmitted by the auxiliary base station for the terminal to the auxiliary base station, and indicating the auxiliary base station to allocate uplink transmission resources for the terminal according to the data volume scheduled and transmitted by the auxiliary base station for the terminal.

In a preferred mode, when the base station device is a primary base station, the negotiation module is specifically configured to determine a secondary base station corresponding to the logical channel group after obtaining a BSR reported by a terminal carrying traffic distribution; determining the data quantity scheduled and transmitted by the auxiliary base station and the main base station for the terminal according to the transmission proportion of all base stations corresponding to the logical channel group of the terminal; and sending the data volume scheduled and transmitted by the auxiliary base station for the terminal to the auxiliary base station, and indicating the auxiliary base station to allocate uplink transmission resources for the terminal according to the data volume scheduled and transmitted by the auxiliary base station for the terminal.

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

the auxiliary base station corresponding to the logical channel group of the terminal negotiates the transmission proportion of all base stations corresponding to the logical channel group of the terminal;

acquiring the transmission proportion of all base stations corresponding to the logical channel group of the terminal from an operation, maintenance and management (OAM) system;

and determining the transmission proportions of all base stations corresponding to the logical channel group of the terminal according to the statistical result of the shunting scheduling.

In a preferred mode, the resource allocation module is further configured to receive, after sending the data amount scheduled and transmitted by the secondary base station for the terminal to the secondary base station, the data amount actually allowed to be scheduled and transmitted by the secondary base station and fed back by the secondary base station; and adjusting the data amount scheduled and transmitted by the main base station for the terminal according to the data amount fed back by the auxiliary base station and actually allowed to be scheduled and transmitted by the auxiliary base station, and allocating uplink transmission resources for the terminal according to the adjusted data amount scheduled and transmitted.

In a preferred mode, the negotiation module is specifically configured to receive a data amount scheduled and transmitted for the terminal, which is determined by the secondary base station according to the BSR reported by the terminal; and determining the data quantity scheduled and transmitted by the main base station for the terminal according to the data quantity reported by the auxiliary base station and the BSR reported by the terminal.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic diagram of a network scenario with separated bearers in the prior art;

FIG. 2 is a schematic diagram of PDCP bearer splitting in the prior art;

fig. 3 is a schematic diagram of RLC bearer offloading in the prior art;

fig. 4 is a schematic diagram of a BSR reporting flow provided in an embodiment of the present invention;

fig. 5 is a schematic diagram of an uplink resource allocation procedure according to an embodiment of the present invention;

fig. 6A and fig. 6B are schematic diagrams of a scheduling offloading flow according to an embodiment of the present invention;

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

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

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

For a clearer understanding of the embodiments of the present invention, some terms or concepts related to the embodiments of the present invention will be described below:

logical channel: the SAP (service access point) between the RLC layer and the MAC layer is a channel divided according to different transmission contents, and the definition of the channel is only logically artificial;

logical channel group: 4 logical channel groups are divided when BSR reports in an LTE system;

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

RB or logical channel carrying offload: under the scene of adopting a bearing shunting technology, the flow corresponding to the RB or the logic channel is shared to a plurality of base stations;

base station receiving BSR: when the UE reports the BSR, the BSR may be directly reported to the target base station of the BSR, or may be forwarded to the target base station of the BSR through another base station. In this embodiment, the target base station of the BSR is referred to as a "base station receiving the BSR".

Example one

The first embodiment describes that, in a network architecture with separated bearers, a UE distinguishes buffered data corresponding to different enbs or cells in each transmission buffer corresponding to a logical channel. When the UE sends a BSR to the MeNB and/or the SeNB, its Buffer Size is calculated according to the data partition corresponding to the base station or the cell. For the PDCP bearer offload architecture shown in fig. 2, the transmission buffer corresponding to the logical channel may be a transmission buffer of a PDCP entity; for the RLC bearer offload architecture shown in fig. 3, the transmission buffer corresponding to the logical channel may be a transmission buffer of a PDCP and/or RLC entity.

In the bearer split architecture, the UE generally needs to obtain configuration information related to BSR reporting from the network side. In the embodiment of the invention, the UE can obtain one or a combination of the following configuration information from the network side:

(1) the UE needs to acquire a corresponding relationship between the aggregated cell and the eNB through a Radio Resource Control (RRC) signaling;

(2) the UE needs to acquire a corresponding relation between an RB (radio resource block) or a logical channel group and a transmission base station or a cell through RRC (radio resource control) signaling;

according to the above "correspondence between aggregated cells and enbs" and "correspondence between an RB or logical channel group and a transmission base station or a cell", the UE may determine a plurality of enbs corresponding to the RBs or logical channels of the bearer offload.

(3) The UE acquires BSR Timer parameters configured for the UE by each eNB through RRC signaling, wherein the BSR Timer parameters comprise a retxBSR-Timer parameter and a periodicBSR-Timer parameter, and the UE sets the retxBSR-Timer and the periodicBSR-Timer according to the acquired BSR Timer parameters. The specific configuration mode may include:

mode 1: the MeNB configures a retxsbsr-Timer parameter and a periodicBSR-Timer parameter for the UE, and sends the retxsbsr-Timer parameter (such as a timing duration) and the periodicBSR-Timer parameter (such as a cycle length) configured for the UE to the UE through an RRC signaling, and the UE uses the parameters to set the retxsr-Timer and the periodicBSR-Timer for each eNB corresponding to a bearer-split logical channel of the UE.

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

Mode 3: the method comprises the steps that a MeNB and an SeNB respectively configure a retxBSR-Timer parameter and a periodicBSR-Timer parameter for UE, the SeNB sends the retxBSR-Timer parameter and the periodicBSR-Timer parameter configured for the UE to the MeNB, and the MeNB sends the retxBSR-Timer parameter and the periodicBSR-Timer parameter configured for the UE by the MeNB and the SeNB to the UE through RRC signaling. When the MeNB sends the retxsbsr-Timer parameter and the periodicBSR-Timer parameter configured by the other eNB for the UE to the UE, the MeNB needs to carry identification information of the relevant eNB. And the UE sets retxBSR-Timer and periodicBSR-Timer corresponding to the MeNB according to the parameters configured by the MeNB, and sets retxBSR-Timer and periodicBSR-Timer corresponding to the SeNB according to the parameters configured by the SeNB.

Mode 4: the method comprises the steps that a MeNB and an SeNB respectively configure a retxBSR-Timer parameter and a periodicBSR-Timer parameter for UE, the MeNB sends the retxBSR-Timer parameter and the periodicBSR-Timer parameter configured for the UE to the SeNB, and the SeNB sends the retxBSR-Timer parameter and the periodicBSR-Timer parameter configured for the UE by the MeNB and the SeNB to the UE through RRC signaling. When sending the retxBSR-Timer parameter and the periodicBSR-Timer parameter configured by the other eNB for the UE to the UE, the SeNB needs to carry identification information of the relevant eNB. And the UE sets retxBSR-Timer and periodicBSR-Timer corresponding to the MeNB according to the parameters configured by the MeNB, and sets retxBSR-Timer and periodicBSR-Timer corresponding to the SeNB according to the parameters configured by the SeNB.

Referring to fig. 4, a schematic diagram of a BSR reporting procedure provided in an embodiment of the present invention is shown, where the procedure may include:

step 401: the UE distinguishes the buffer data in the sending buffer zone corresponding to the RB or the logical channel according to a plurality of eNBs corresponding to the RB or the logical channel which carries the shunting;

step 402: when reporting the BSR to the eNB corresponding to the RB or the logical channel, the UE reports the data amount of the buffered data corresponding to the eNB (i.e., the base station receiving the BSR) in the transmission buffer corresponding to the RB or the logical channel to the eNB (i.e., the base station receiving the BSR) through the BSR.

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

Further, after reporting the BSR to the eNB, the UE starts or restarts the periodicBSR-Timer and the retxsbsr-Timer corresponding to the eNB.

In a specific implementation manner, in step 401 of the above procedure, the UE may distinguish data in a transmission buffer of the same logical channel into data of different enbs or cells by using the following method: the UE sets a plurality of sub-sending buffer areas corresponding to the RB or the logical channel according to a plurality of eNBs corresponding to the RB or the logical channel for bearing the shunting, the sub-sending buffer areas correspond to the eNBs corresponding to the RB or the logical channel one by one, and each sub-sending buffer area is used for storing buffer data to be sent corresponding to the eNB on the RB or the logical channel. Correspondingly, in step 402, the UE reports the data amount of the buffered data in the multiple sub transmission buffers corresponding to the RB or the logical channel and the sub transmission buffer corresponding to the eNB receiving the BSR through the BSR.

In another specific implementation manner, in step 401 of the above procedure, the UE may distinguish data in a transmission buffer of the same logical channel into data of different enbs or cells by using the following method: and the UE sets an identifier for the buffered data in the sending buffer corresponding to the RB or the logical channel carrying the shunting, wherein the identifier is used for identifying the eNB corresponding to the buffered data. Correspondingly, in step 402, the UE reports the data amount of the buffered data of the eNB identified as the BSR to the eNB receiving the BSR through the BSR according to the identifier of the buffered data in the transmission buffer corresponding to the RB or the logical channel.

In step 402 of the above procedure, the UE may report the BSR in a per UE per eNB triggering manner. The triggering mode of per UE per eNB means that UE triggers and reports BSR on eNBs which need to perform uplink data transmission respectively. If the BSR triggering mode of per UE per eNB is adopted, for the RB served by each eNB, whether BSR triggering exists may be determined according to the BSR triggering type and triggering mode of the previous version of R12, respectively.

Further, when a per UE per eNB BSR triggering manner is adopted, the UE may report the BSR of a per eNB to a corresponding eNB when the corresponding eNB has UL (uplink) resources; the information can also be reported to other eNBs, and then the other eNBs interact with the eNBs and the MeNB corresponding to the PereNB BSR; the report may also be sent to the MeNB, and then the MeNB interacts with the eNB corresponding to the per eNB BSR.

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

As can be seen from the above description of the first embodiment, since the terminal distinguishes, according to the multiple base stations corresponding to the RBs or logical channels, the buffered data in the sending buffer corresponding to the RB or logical channel that carries the offload, and reports the buffered data amount corresponding to the base station for the base station when reporting the BSR to the base station, so as to report the buffered data amount corresponding to the base station for different base stations, that is, the size of the buffered data reported to each base station is the size of the data that actually needs to be sent on the base station, so that the base station allocates the uplink resource according to the size of the data that actually needs to be sent on the base station.

Example two

The embodiment of the invention describes that under a network architecture with separated bearers, after receiving a BSR from UE in bearer splitting, an MeNB and/or an SeNB on a network side makes the total of uplink resources allocated to the UE not exceed the uplink Buffer data Size (i.e. Buffer Size) reported by the UE in a negotiation manner between the MeNB and the SeNB.

In a network architecture with separated 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 invention, the base stations can exchange the following information through the interface:

(1) corresponding relations among RBs, UEs and transmission base stations are interacted among the base stations aggregated by the UE, or corresponding relations among logical channels, UEs and transmission base stations are required to be interacted among the base stations aggregated by the UE;

(2) between base stations aggregated by the UE, BSR parameter configuration information for the UE may need to be interacted, for example, base station information corresponding to each buffer in the content of reporting the BSR to a certain base station is specified by the UE.

The eNB may also send BSR reporting related configuration information to the UE through RRC signaling. In this embodiment, the configuration information sent by the eNB to the UE through RRC signaling may include one or a combination of the following:

(1) sending the corresponding relation between the aggregated cells and the eNB to the UE through RRC signaling;

(2) sending a corresponding relation between an RB or a logical channel group and a transmission base station or a cell to UE through RRC signaling;

(3) and sending BSR Timer parameters configured by each eNB for the UE to the UE through RRC signaling, wherein the BSR Timer parameters comprise a retxBSR-Timer parameter and a periodicBSR-Timer parameter, and the UE sets the retxBSR-Timer and the periodicBSR-Timer according to the acquired BSR Timer parameters. The specific configuration mode may include:

Referring to fig. 5, a schematic diagram of an uplink resource allocation procedure provided in the second embodiment of the present invention is shown, where the procedure may include:

step 501: the method comprises the steps that an eNB obtains a BSR reported by UE carrying shunting, wherein the BSR carries the sum of uplink buffer data volumes of all eNBs corresponding to a logical channel group of the UE;

step 502: the eNB determines that each eNN corresponding to the logical channel group is the UE and the data volume of scheduling transmission by negotiating with other eNBs corresponding to the logical channel group, wherein the sum of the data volumes of scheduling transmission of all eNBs for the UE does not exceed the sum of the uplink buffer data volume reported by the UE;

step 503: and the eNB allocates uplink transmission resources for the UE according to the data volume scheduled and transmitted by the eNB for the UE.

In step 501 of the above process, the UE may report the BSR by using a per UE BSR triggering manner, or may report the BSR by using a per UE per eNB triggering manner. The per UE BSR triggering mode refers to that the UE triggers and reports BSRs on enbs that need to perform uplink data transmission.

If the BSR is reported in the per UE BSR triggering manner, the BSR may be generated in the R8 manner, or the BSR may be generated for each eNB. If R is reported in the BSR triggering mode of per UE per eNB, whether BSR triggering exists may be determined according to the BSR triggering type and triggering mode of the previous version of R12 for the RB served by each eNB.

Further, when a per UE BSR triggering manner is adopted, the UE may report the BSR to all aggregated enbs, may also report the BSR only to the MeNB, or report the BSR when any aggregated eNB has UL (uplink) resources. And if the base station reported by the BSR is not the MeNB, the base station reported by the BSR sends the BSR to the MeNB.

Further, when a per UE per eNB BSR triggering manner is adopted, the UE may report the BSR of a per eNB to a corresponding eNB when the corresponding eNB has UL resources; or the information can be reported to other eNB base stations, and then the other eNB base stations interact with the eNB and the MeNB corresponding to the PereNB BSR; the report may also be sent to the MeNB, and then the MeNB interacts with the eNB corresponding to the per eNB BSR.

Particularly, if a per UE per eNB BSR triggering manner is adopted, for an RB or logical channel group supporting cooperative transmission of multiple base stations, when a UE reports BSR information of the same RB or logical channel group for the multiple base stations, the UE still reports a BSR according to information of all data amounts to be transmitted corresponding to the RB or logical channel group, without considering the redundancy reporting problem (that is, BSR contents reported by the UE to the corresponding eNB are the same and equal to a sum of data amounts that the RB or logical channel group needs to transmit).

In step 502 of the above procedure, no matter which triggering reporting mode the UE reports the BSR in step 501, the MeNB may obtain the uplink data amount that needs to be transmitted by the RB or logical channel group supporting bearer splitting. For example, as described above, the UE may report the BSR to the MeNB, or the UE may report the BSR to the SeNB, and the SeNB may interact with the BSR to the MeNB.

For RBs supporting simultaneous transmission in different base stations, according to BSR information reported by UE carrying offload, the MeNB may determine the data amount of the RB or logical channel group to be scheduled and transmitted on each base station, or the MeNB may negotiate with the corresponding eNB carrying offload to determine the data amount of the RB or logical channel group to be scheduled and transmitted on each base station together. Specifically, the size of the resource scheduled and allocated by the eNB for the UE does not exceed the buffer size reported by the UE through the BSR.

In specific implementation, the scheduling and offloading methods may include the following steps:

scheduling and shunting mode 1: the MeNB allocates scheduling transmission data volume according to the resource volume reserved for the distributed load by the SeNB

The SeNB may interact with the MeNB about the available resource size M or the data volume size reserved for the offload bearer, and the information may be semi-statically interacted or dynamically interacted. By semi-static interaction is meant: after the SeNB sends the reserved available resource size or data size to the MeNB, the available resource size or data size on the MeNB is valid until the updated available resource size or data size is sent again; by dynamic interaction is meant: after receiving the BSR reported by the UE, the SeNB may send the size M of the available resources or the size of the data volume reserved by the SeNB for the offload bearer to the MeNB (applicable to a scenario where the UE reports the BSR to all enbs corresponding to the offload bearer), or the SeNB may send the size M of the available resources or the size of the data volume reserved by the SeNB for the offload bearer to the MeNB according to the request of the MeNB (applicable to a scenario where the UE reports the BSR to the MeNB or the SeNB receiving the BSR report). That is, in a dynamic interaction manner, each time the MeNB performs scheduling transmission data size allocation, the size of the resource or the data size reserved for the offload bearer needs to be reported by the relevant eNB.

As shown in fig. 6A, the procedure of scheduling offload mode 1 may include:

step 610: after acquiring the BSR reported by the UE, the MeNB determines an SeNB corresponding to an RB or a logical channel group corresponding to the buffer size reported by the BSR.

In specific implementation, the MeNB may use "corresponding relationship information between RBs and base stations" interacted between the base stations and the reported RB or logical channel group corresponding to the buffer size, or enbs corresponding to the RB or logical channel group (that is, which enbs carry the RB or logical channel group together for transmission).

Step 611: and the MeNB determines the data volume of the EeNB and the MeNB for scheduling transmission for the UE according to the resource volume reserved for the distributed bearer by the SeNB corresponding to the RB or the logical channel group.

In specific implementation, the MeNB may roughly calculate, according to the available resource reservation information M (in a scenario of exchanging reserved resource amounts in a semi-static manner) that the SeNB has interacted for the last time, the data amount of the UE that can be transmitted on the SeNB according to parameters such as the number of PRBs and the level of the wideband MCS, and determine, according to the calculation result, the data amount that needs to be transmitted respectively on the MeNB and the SeNB. For example, the size of the data volume to be transmitted in the MeNB by the RB or logical channel group calculated by the MeNB is: and the data volume corresponding to the data size-M to be transmitted of the RB or the logic channel group reported by the UE or the calculated data volume transmitted by the SeNB.

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

In specific implementation, the MeNB may send a notification message to the UE, where the notification message carries information such as an identifier of the UE, an identifier of an RB or a logical channel group, and an amount of uplink data to be transmitted on the SeNB, and instructs the SeNB to perform UE UL data scheduling transmission. Further, the SeNB may feed back acknowledgement information of the notification to the MeNB, and perform scheduling according to the MeNB notification indication information.

Scheduling and shunting mode 2: scheduling transmission data quantity distribution is carried out by the MeNB according to the transmission proportion of each eNB

The MeNB may maintain transmission proportions for all enbs corresponding to the split bearers for each UE. The source of the transmission ratio may be the following:

case 1: the MeNB and the SeNB can negotiate to determine the transmission proportion before;

case 2: the transmission proportion is configured on an OAM (Operation Administration and Maintenance, and management) system in advance, and the MeNB can acquire the transmission proportion from the OAM system;

case 3: and the MeNB determines the transmission ratio according to the statistical result of the shunting scheduling. For example, the MeNB determines the transmission ratio of each eNB according to the split scheduling condition 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 cell interference and/or load, and the specific scheduling.

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

As shown in fig. 6B, the procedure of scheduling offload mode 1 may include:

step 620: after acquiring the BSR reported by the UE, the MeNB determines an SeNB corresponding to an RB or a logical channel group corresponding to the buffer size reported by the BSR.

Step 621: and the MeNB determines the data amount scheduled and transmitted by the SeNB and the MeNB for the UE according to the transmission proportion of all the eNBs corresponding to the logical channel group of the UE.

In specific implementation, the MeNB determines the size of the data volume scheduled and transmitted by each eNB for the UE according to the transmission proportion of each eNB corresponding to the split bearer of the UE and the buffer size reported by the UE through the BSR, wherein the sum of the sizes of the data volumes scheduled and transmitted by each eNB does not exceed the buffer size reported by the UE through the BSR. For example, the UL data size of the UE allocated by the MeNB to the SeNB takes the following values: the buffer size × k corresponding to the RB or logical channel group reported by the UE), where the UL data size value of the UE allocated by the MeNB for itself is: and buffer size (1-k)) corresponding to the RB or the logical channel reported by the UE, wherein k is the transmission proportion of the eNB.

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

Scheduling and shunting mode 3: the optimization scheme for the scheduling and shunting mode 1 and the scheduling and shunting mode 2

After the scheduling offloading method 1 or the scheduling offloading method 2 is adopted, the MeNB allocates the data amount for scheduling transmission to each eNB, and notifies the SeNB, the SeNB calculates the data amount that can be actually scheduled by the base station, and if the calculated data amount that can be actually scheduled by the base station is different from the data amount allocated to the SeNB by the MeNB, the SeNB feeds back the actual data amount that can be actually transmitted (including the UE identifier, the RB or logical channel group identifier, the UE uplink data amount that can be actually transmitted by the SeNB, and the like) to the MeNB, and the SeNB performs UE scheduling according to the actual data amount that can be scheduled calculated by the SeNB. And the MeNB adjusts the scheduling transmission condition of the UE on the MeNB according to the actual size of the data volume which can be transmitted and fed back by the SeNB.

Mode 4: the SeNB calculates the data volume scheduled and transmitted by the SeNB and reports the data volume to the MeNB, and the MeNB calculates the data volume scheduled and transmitted by the base station

Under the scenario that the UE reports BSRs to all enbs or reports BSRs to corresponding base stations transmitting the RBs or logical channel groups, the SeNB may calculate, according to the current situation, the size of data volume that the base station can actually schedule for the UE, and feed back, to the MeNB, information on the size of the actual transmittable data volume calculated by the SeNB (including UE identification, RB or logical channel group identification, the size of UE uplink data volume actually transmittable by the SeNB, and the like), and the SeNB schedules the UE according to the calculated size of the actual schedulable data volume. And the MeNB carries out scheduling transmission on the residual uplink data which needs to be scheduled by the UE at the base station according to the actual size information of the data volume which can be transmitted and is fed back by the SeNB and the BSR reported by the UE.

As can be seen from the above description of the second embodiment, after the main base station obtains the BSR reported by the terminal, the data amount allocated by each base station is determined in a manner of negotiating with other base stations according to the total amount of uplink buffered data indicated by the BSR, and the total amount of data allocated by each base station is guaranteed not to exceed the total amount of uplink buffered data reported by the terminal, so that each base station allocates uplink resources to only a part of the amount of uplink buffered data reported by the terminal.

Based on the same technical concept, the embodiment of the invention also provides terminal equipment and base station equipment.

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

As shown, the terminal device may include: a buffer data management module 71 and a BSR reporting module 72, wherein:

a buffer data management module 71, configured to distinguish, according to a plurality of base stations corresponding to logical channels, buffer data in transmission buffers corresponding to the logical channels;

a BSR reporting module 72, configured to report a BSR to the base station corresponding to the logical channel, and when reporting the BSR to the base station corresponding to the logical channel, report a buffer data amount corresponding to the base station receiving the BSR in the sending buffer corresponding to the logical channel to the base station receiving the BSR through the BSR.

Specifically, the buffer data management module 71 may set a plurality of sub transmission buffers corresponding to the logical channel according to a plurality of base stations corresponding to the logical channel, where the plurality of sub transmission buffers correspond to the plurality of base stations corresponding to the logical channel one to one, and each sub transmission buffer is used to store buffer data to be transmitted on the logical channel by a corresponding base station. Correspondingly, the BSR reporting module 72 may report the buffer data amount in the sub transmission buffers corresponding to the base station receiving the BSR in the plurality of sub transmission buffers corresponding to the logical channels to the base station receiving the BSR through the BSR.

Specifically, the buffered data management module 71 may set an identifier for the buffered data in the transmission 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 buffer data amount identified as the base station receiving the BSR to the base station receiving the BSR through the BSR according to the identifier of the buffer data in the transmission buffer corresponding to the logical channel.

Specifically, the BSR reporting module 72 may report the BSR to the base station receiving the BSR; or reporting a BSR to a main base station, and instructing the main base station to forward the BSR to a base station receiving the BSR; or reporting the BSR to other base stations except the base station receiving the BSR, and instructing the other base stations to forward the BSR to the base station receiving the BSR.

The terminal device may further include a determining module 73, configured to obtain, through RRC signaling, a correspondence between the aggregated cells and the base station and a correspondence between the logical channel group and the base station; and determining a plurality of base stations corresponding to the logical channels according to the corresponding relation between the aggregated cell and the base stations and the corresponding relation between the logical channel group and the base stations.

The terminal device may further include a timer setting module 74, configured to obtain BSR timer parameters corresponding to each base station through RRC signaling, and set a BSR retransmission timer and a BSR cycle timer according to the obtained BSR timer parameters; wherein the BSR timer parameters include a retransmission BSR timer parameter and a periodic BSR timer parameter. Correspondingly, the BSR reporting module 72 may also start or restart a BSR retransmission timer and a BSR cycle timer corresponding to the base station receiving the BSR after reporting the BSR to the base station corresponding to the logical channel.

As shown, the base station apparatus may include: a receiving module 81, a negotiation module 82, and a resource allocation module 83, wherein:

a receiving module 81, configured to obtain a buffer status report BSR reported by a terminal carrying traffic distribution, where the BSR carries a sum of uplink buffer data amounts of all base stations corresponding to a logical channel group of the terminal;

a negotiation module 82, configured to perform negotiation with other base stations corresponding to the logical channel group, and determine a data amount scheduled and transmitted by each base station corresponding to the logical channel group for the terminal, where a sum of the data amounts scheduled and transmitted by each base station for the terminal does not exceed a sum of uplink buffer data amounts reported by the terminal;

and a resource allocation module 83, configured to allocate uplink transmission resources to the terminal according to the data amount scheduled and transmitted by the base station for the terminal.

In an implementation manner, when the base station device is a primary base station device, the negotiation module 82 may determine a secondary base station corresponding to the logical channel group after obtaining a BSR reported by a terminal carrying traffic distribution; determining the data quantity of the auxiliary base station and the main base station for scheduling transmission for the terminal according to the resource quantity reserved for the shunt bearer by the auxiliary base station corresponding to the logical channel group; and sending the data volume scheduled and transmitted by the auxiliary base station for the terminal to the auxiliary base station, and indicating the auxiliary base station to allocate uplink transmission resources for the terminal according to the data volume scheduled and transmitted by the auxiliary base station for the terminal.

In another implementation manner, when the base station device is a primary base station, the negotiation module 82 may determine a secondary base station corresponding to the logical channel group after obtaining a BSR reported by a terminal carrying traffic distribution; determining the data quantity scheduled and transmitted by the auxiliary base station and the main base station for the terminal according to the transmission proportion of all base stations corresponding to the logical channel group of the terminal; and sending the data volume scheduled and transmitted by the auxiliary base station for the terminal to the auxiliary base station, and indicating the auxiliary base station to allocate uplink transmission resources for the terminal according to the data volume scheduled and transmitted by the auxiliary base station for the terminal.

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

Further, the resource allocation module 83 may also send the data amount scheduled and transmitted by the secondary base station for the terminal to the secondary base station, and then receive the data amount actually allowed to be scheduled and transmitted by the secondary base station and fed back by the secondary base station; and adjusting the data amount scheduled and transmitted by the main base station for the terminal according to the data amount fed back by the auxiliary base station and actually allowed to be scheduled and transmitted by the auxiliary base station, and allocating uplink transmission resources for the terminal according to the adjusted data amount scheduled and transmitted.

Specifically, the negotiation module 82 may receive a data amount scheduled and transmitted for the terminal, which is determined by the secondary base station according to the BSR reported by the terminal; and determining the data quantity scheduled and transmitted by the main base station for the terminal according to the data quantity reported by the auxiliary base station and the BSR reported by the terminal.

In summary, according to the embodiments of the present invention, a large number of small cells can be deployed simultaneously under the coverage of a macro cell, and a UE can transmit data carried by the same EPS on multiple enbs in a bearer splitting manner, so that the UE can utilize resources of multiple enbs simultaneously when the enbs are connected by a non-ideal link. The embodiment of the invention solves the problem of redundant report generated by not distinguishing different eNB data in the buffer area data volume reported when the BSR is reported in the prior art, thereby reducing the waste of air interface resources and improving the utilization efficiency of the air interface resources.

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

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

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

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

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

Claims

1. An uplink resource allocation method, comprising:

a base station obtains a Buffer Status Report (BSR) reported by a terminal carrying flow distribution, wherein the BSR carries the sum of uplink buffer data volumes of all base stations corresponding to a logic channel group of the terminal;

the base station negotiates with other base stations corresponding to the logical channel group to determine the data quantity scheduled and transmitted for the terminal by each base station corresponding to the logical channel group, and the sum of the data quantity scheduled and transmitted for the terminal by all the base stations does not exceed the sum of the uplink buffer data quantity reported by the terminal; the base station performs negotiation with other base stations corresponding to the logical channel group to determine the data amount scheduled and transmitted by each base station corresponding to the logical channel group for the terminal, and the method specifically includes: after a main base station obtains a BSR reported by a terminal bearing shunt, determining an auxiliary base station corresponding to the logical channel group, wherein the main base station determines data quantity scheduled and transmitted for the terminal by the auxiliary base station and the main base station according to the resource quantity reserved for the shunt load by the auxiliary base station corresponding to the logical channel group; or, the master base station determines the data amount scheduled and transmitted by the auxiliary base station and the master base station for the terminal according to the transmission proportion of all base stations corresponding to the logical channel group of the terminal;

and the main base station sends the data volume scheduled and transmitted by the auxiliary base station for the terminal to the auxiliary base station, and instructs the auxiliary base station to allocate uplink transmission resources for the terminal according to the data volume scheduled and transmitted by the auxiliary base station for the terminal.

2. The method of claim 1, wherein the master base station obtains the transmission ratios of all base stations corresponding to the logical channel group of the terminal by one of:

3. The method of claim 1, wherein after the primary base station sends the amount of data scheduled for transmission by the secondary base station for the terminal to the secondary base station, further comprising:

the main base station receives the data volume which is fed back by the auxiliary base station and actually allowed to be scheduled and transmitted by the auxiliary base station;

and the main base station adjusts the data amount scheduled and transmitted by the main base station for the terminal according to the data amount actually allowed to be scheduled and transmitted by the auxiliary base station and fed back by the auxiliary base station, and allocates uplink transmission resources for the terminal according to the adjusted data amount scheduled and transmitted.

4. The method of claim 1, wherein the base station determining the amount of data scheduled for transmission by each base station corresponding to the logical channel group for the terminal through negotiation with other base stations corresponding to the logical channel group comprises:

the main base station receives the data volume scheduled and transmitted for the terminal, which is determined by the auxiliary base station according to the BSR reported by the terminal;

and the main base station determines the data quantity scheduled and transmitted by the main base station for the terminal according to the data quantity reported by the auxiliary base station and the BSR reported by the terminal.

5. A base station apparatus, comprising:

a resource allocation module, configured to send, by a primary base station, a data amount scheduled and transmitted by an auxiliary base station for the terminal to the auxiliary base station, and instruct the auxiliary base station to allocate uplink transmission resources to the terminal according to the data amount scheduled and transmitted by the auxiliary base station for the terminal;

the negotiation module is specifically configured to, when the base station device is a primary base station device, determine a secondary base station corresponding to the logical channel group after obtaining a BSR reported by a terminal carrying traffic distribution; the main base station determines the data quantity scheduled and transmitted by the auxiliary base station and the main base station for the terminal according to the resource quantity reserved for the shunt bearer by the auxiliary base station corresponding to the logic channel group; or,

after BSR reported by a terminal carrying the shunting is obtained, a secondary base station corresponding to the logic channel group is determined; and the main base station determines the data quantity scheduled and transmitted by the auxiliary base station and the main base station for the terminal according to the transmission proportion of all base stations corresponding to the logical channel group of the terminal.

6. The base station device of claim 5, 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 by one of:

7. The base station device of claim 5, wherein the resource allocation module is further configured to receive the data amount actually allowed for scheduling transmission by the secondary base station, which is fed back by the secondary base station, after sending the data amount scheduled for transmission by the secondary base station for the terminal to the secondary base station; and adjusting the data amount scheduled and transmitted by the main base station for the terminal according to the data amount fed back by the auxiliary base station and actually allowed to be scheduled and transmitted by the auxiliary base station, and allocating uplink transmission resources for the terminal according to the adjusted data amount scheduled and transmitted.

8. The base station device of claim 5, wherein the negotiation module is specifically configured to receive a data amount scheduled for transmission by the secondary base station for the terminal, which is determined by the secondary base station according to the BSR reported by the terminal; and determining the data quantity scheduled and transmitted by the main base station for the terminal according to the data quantity reported by the auxiliary base station and the BSR reported by the terminal.