WO2017219959A1

WO2017219959A1 - Voice scheduling method and device

Info

Publication number: WO2017219959A1
Application number: PCT/CN2017/089175
Authority: WO
Inventors: 许浩; 楚志远; 舒文江; 张达亮
Original assignee: 华为技术有限公司
Priority date: 2016-06-24
Filing date: 2017-06-20
Publication date: 2017-12-28
Also published as: CN106060850B; CN106060850A

Abstract

Disclosed are a voice scheduling method and device, which can improve the voice quality of a voice call. The method of the embodiment of the present invention comprises: a base station receiving a VoLTE call request sent by a user equipment (UE) and establishing a VoLTE load with the UE in a cell resided in by the UE; when the base station establishes carrier aggregation (CA) with the UE, the base station determining a target cell according to the signal quality levels or load magnitudes of service cells, wherein the service cells comprise master cells and auxiliary cells; and the base station transmitting a VoLTE downlink voice packet in the target cell or instructing the UE to send a VoLTE uplink voice packet in the target cell.

Description

Voice scheduling method and device

The present application claims priority to Chinese Patent Application No. 201610473024.8, entitled "A Voice Scheduling Method and Apparatus" on June 24, 2016, the entire contents of which are incorporated herein by reference. .

Technical field

The present invention relates to the field of voice technologies, and in particular, to a voice scheduling method and apparatus.

Background technique

VoLTE (Voice on LTE) is a voice technology carried on LTE and can provide a high-quality voice experience. In the LTE multi-carrier networking scenario, due to differences in the format of each carrier (FDD (Frequency Division Duplexing) or TDD (Time Division Duplexing), frequency band, power configuration, interference, and load. It may result in inconsistent VoLTE voice quality carried on different carriers at a certain moment or location. Therefore, in an LTE multi-carrier scenario, a carrier that is more suitable for carrying VoLTE can be selected to carry voice, minimize the impact of interference load, and obtain a voice experience optimal.

In the prior art, when a UE (User Equipment) resides at a certain LTE carrier frequency, the VoLTE voice quality is poor due to interference, load, etc., or VoLTE can be considered to obtain better voice at other carrier frequencies. In the case of quality, an inter-frequency handover can be triggered to switch the VoLTE user to the inter-frequency point to provide voice services on the new cell to enhance the user's voice experience.

However, the inter-frequency handover of the LTE is required to interrupt the connection between the UE and the source cell before accessing the new cell. Therefore, the user plane and the signaling plane of the voice call are interrupted, resulting in a decrease in voice quality.

Summary of the invention

The invention provides a voice scheduling method and device, which can improve the voice quality of a voice call.

A first aspect of the present invention provides a voice scheduling method, the method comprising:

Receiving, by the base station, a VoLTE call request sent by the user equipment UE, and establishing a VoLTE bearer with the UE in the cell where the UE camps;

When the base station and the UE have established a carrier aggregation CA, the base station determines a target cell according to a signal quality of the serving cell or a load size, where the serving cell includes a primary cell and a secondary cell;

The base station transmits a VoLTE downlink voice packet on the target cell or instructs the UE to send a VoLTE uplink voice packet on the target cell.

With reference to the first aspect of the present invention, in a first implementation manner of the first aspect, the carrier aggregation CA includes an uplink CA;

When the base station and the UE have established an uplink CA, the base station sends uplink scheduling information on the physical downlink control channel PDCCH; the uplink scheduling information is used to instruct the UE to send VoLTE uplink voice on the target cell. package.

With reference to the first aspect of the present invention, in a second implementation manner of the first aspect, the carrier aggregation CA includes a downlink CA;

When the base station and the UE have established a downlink CA, the base station transmits a VoLTE downlink voice packet on the target cell.

With reference to the first aspect of the present invention, the first implementation of the first aspect, or the second implementation of the first aspect, in a third implementation manner of the first aspect of the present invention,

When the base station and the UE do not establish a carrier aggregation CA, the base station sends an operation instruction, where the operation instruction is used to instruct the base station to establish a CA with the UE.

With the first aspect of the present invention, the first implementation manner of the first aspect, or the second implementation manner of the first aspect, in the fourth implementation manner of the first aspect of the present disclosure, the number of the target cells is at least One.

With reference to the fourth implementation manner of the first aspect of the present invention, in a fifth implementation manner of the first aspect of the present disclosure, when the number of the target cells is two, the base station transmits VoLTE on the target cell. The downlink voice packet or the UE is sent to send the VoLTE uplink voice packet on the target cell, including:

Transmitting, by the base station, a VoLTE downlink voice packet on the first target cell or the second target cell; or

The base station instructs the UE to send a VoLTE uplink voice packet on the first target cell or the second target cell.

A second aspect of the present invention provides a voice scheduling apparatus, the apparatus comprising:

a transceiver unit, configured to receive a VoLTE call request sent by the user equipment UE;

a processing unit, configured to establish a VoLTE bearer with the UE in a cell where the UE camps;

When the carrier aggregation CA is established with the UE, the target cell is determined according to the signal quality of the serving cell or the load size, where the serving cell includes a primary cell and a secondary cell;

And transmitting a VoLTE downlink voice packet on the target cell or instructing the UE to send a VoLTE uplink voice packet on the target cell.

With reference to the second aspect of the present invention, in a first implementation manner of the second aspect, the carrier aggregation CA includes an uplink CA, and the processing unit is configured to: when the uplink CA is established with the UE, in a physical downlink control channel. The uplink scheduling information is sent on the PDCCH; the uplink scheduling information is used to instruct the UE to send a VoLTE uplink voice packet on the target cell.

With reference to the second aspect of the present invention, in a second implementation manner of the second aspect, the carrier aggregation CA includes a downlink CA, and the processing unit is configured to: when the downlink CA is established with the UE, in the target cell The VoLTE downlink voice packet is transmitted on.

With reference to the second aspect of the present invention, the first implementation of the second aspect, or the second implementation of the second aspect, in a third implementation manner of the second aspect of the present invention, the processing unit is further configured to When the UE does not establish a carrier aggregation CA, it sends an operation instruction, where the operation instruction is used to indicate that the CA is established with the UE.

With reference to the second aspect of the present invention, the first implementation manner of the second aspect, or the second implementation manner of the second aspect, in the fourth implementation manner of the second aspect of the present disclosure, the number of the target cells is at least One.

With reference to the fourth implementation manner of the second aspect of the present invention, in a fifth implementation manner of the second aspect of the present disclosure, when the number of the target cells is two, the processing unit is used in the target cell Transmitting a VoLTE downlink voice packet or instructing the UE to send a VoLTE uplink voice packet on the target cell, including:

The processing unit is configured to transmit a VoLTE downlink voice packet on the first target cell or the second target cell; or

The processing unit is configured to instruct the UE to send a VoLTE uplink voice packet on the first target cell or the second target cell.

A third aspect of the embodiments of the present invention provides a storage medium, where the program code is stored, and when the program code is executed by the processor, the voice scheduling provided by the implementation of the first aspect or the first aspect is performed. method. The storage medium includes, but is not limited to, a flash memory, a hard disk drive (HDD), or a solid state drive (SSD).

It can be seen from the above technical solution that the present invention has the following advantages: the base station receives the VoLTE call request sent by the user equipment UE, and establishes a VoLTE bearer with the UE in the cell where the UE camps; when the base station and the UE When the carrier aggregation CA is established, after the CA is established, the base station and the UE simultaneously connect multiple carriers, and each carrier corresponds to one cell. The set of these cells serves as a serving cell, and the base station determines the signal quality or the load size according to the serving cell. a target cell, and transmitting a VoLTE downlink voice packet on the target cell or instructing the UE to send a VoLTE uplink voice packet on the target cell; thereby implementing a VoLTE voice packet bearer on the cell by using a scheduling manner, and improving voice The voice quality of the call.

DRAWINGS

1 is a schematic structural diagram of an embodiment of a communication system provided by the present invention;

2 is a schematic structural diagram of an embodiment of a base station provided by the present invention;

3 is a schematic flowchart of an embodiment of a voice scheduling method provided by the present invention;

4 is a schematic diagram of a scenario of an embodiment of VoLTE voice packet scheduling according to the present invention;

FIG. 5 is a schematic structural diagram of an embodiment of a voice scheduling apparatus according to the present invention.

detailed description

The terms "first", "second", "third", "fourth", etc. (if present) in the specification and claims of the present invention and the above figures are used to distinguish similar objects without having to use To describe a specific order or order. It is to be understood that the data so used may be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than what is illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

The present invention is mainly applied to an LTE network and deployed with VoLTE. At the same time, Carrier Aggregation (CA) technology is deployed, and a terminal supporting both CA and VoLTE exists in the network. FIG. 1 is a schematic structural diagram of a communication system applied to an embodiment of the present invention. The system includes a base station and a user equipment UE, and the base station and the UE communicate through the access network part E-UTRAN. The UE described in the embodiment of the present invention may be a device that communicates in the foregoing communication system, for example, may be a mobile phone (such as a mobile phone) or a tablet computer with a call function, a computer, etc., for example, may also be a car call. The device and the like are not limited herein. The UE in the present invention is used to initiate a VoLTE call and perform carrier aggregation. The base station in the embodiment of the present invention is configured to communicate with a user terminal in the foregoing communication system, for example, may be a narrow base station, that is, a public mobile communication base station, or a generalized base station, that is, a base station subsystem. There is no limit here. Specifically, the present invention may be an evolved Node B (eNode B), that is, a name of a base station in LTE. The eNode B in the present invention serves as a wireless transmitting and receiving node of an E-UTRAN access network for establishing a VoLTE bearer and performing carrier aggregation.

The base station side in FIG. 1 can be implemented by the base station 200 in FIG. 2. The organization structure of the base station 200 is as shown in FIG. 2, and includes a processor 202, a memory 204, and a transceiver 206, and can also include a bus 208.

The processor 202, the memory 204, and the transceiver 206 can implement communication connection with each other through the bus 208, and can also implement communication by other means such as wireless transmission.

The memory 204 may include a volatile memory (English: volatile memory), such as a random access memory (English: random-access memory, abbreviation: RAM); the memory 204 may also include a non-volatile memory (English: non-volatile memory) ), such as read-only memory (English: read-only memory, abbreviation: ROM), flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation: HDD) or solid state drive (English: solid state drive , abbreviation: SSD); the memory 204 may also include a combination of the above types of memory. When the technical solution provided by the present invention is implemented by software, the program code for performing execution on the base station side in the voice scheduling method provided in FIG. 3 of the present invention is stored in the memory 204 and executed by the processor 202.

Base station 200 communicates with user equipment via transceiver 206.

Processor 202 can be a central processing unit CPU.

The transceiver 206 is configured to receive a VoLTE call request sent by the user equipment UE.

The processor 202 is configured to establish a VoLTE bearer with the UE in a cell where the UE camps;

In the embodiment of the present invention, the transceiver 206 receives the VoLTE call request sent by the user equipment UE, and the processor 202 establishes a VoLTE bearer with the UE in the cell where the UE camps; when the carrier aggregation CA is established with the UE, After the UE is established, the UE is connected to multiple carriers at the same time, and each carrier corresponds to one cell. The set of these cells is used as the serving cell, and the processor 202 determines the target cell according to the signal quality of the serving cell or the load size, and is in the target cell. Transmitting the VoLTE downlink voice packet or instructing the UE to send the VoLTE uplink voice packet on the target cell; thereby implementing the bearer of the VoLTE voice packet on the cell in a scheduling manner, and improving the voice quality of the voice call.

Optionally, the carrier aggregation CA includes an uplink CA, where the processor 202 is configured to send uplink scheduling information on a physical downlink control channel PDCCH when the UE has established an uplink CA, where the uplink scheduling information is used to indicate The UE sends a VoLTE uplink voice packet on the target cell.

Optionally, the carrier aggregation CA includes a downlink CA, and the processor 202 is configured to transmit a VoLTE downlink voice packet on the target cell when the downlink CA is established by the UE.

Optionally, the processor 202 is further configured to: when the carrier aggregation CA is not established with the UE, send an operation instruction, where the operation instruction is used to indicate that the CA is established with the UE.

Optionally, the number of the target cells is at least one.

Further, when the number of the target cells is two, the processor 202 is configured to transmit a VoLTE downlink voice packet on the target cell or instruct the UE to send a VoLTE uplink voice packet on the target cell, include:

The processor 202 is configured to transmit a VoLTE downlink voice packet on the first target cell or the second target cell; or

The processor 202 is configured to instruct the UE to send a VoLTE uplink voice packet on the first target cell or the second target cell.

The present invention also provides a voice scheduling method. The method is performed when the base station side in FIG. 1 and the base station 200 in FIG. 2 are running, and a schematic flowchart thereof is shown in FIG. 3.

301. The base station receives a VoLTE call request sent by the user equipment UE, and establishes a VoLTE bearer with the UE in the cell where the UE camps.

The UE initiates a VoLTE call request in an idle state or a connected state. After receiving the voice bearer setup request of the MME, the base station eNodeB establishes a VoLTE bearer with the UE currently camped on the UE, and initiates a voice call.

302. When the base station and the UE have established a carrier aggregation CA, the base station determines a target cell according to a signal quality of the serving cell or a load size, where the serving cell includes a primary cell and a secondary cell.

Optionally, when the base station and the UE do not establish a carrier aggregation CA, the base station sends an operation instruction, where the operation instruction is used to indicate that the base station establishes a CA with the UE.

It should be noted that when carrier aggregation CA is used, there are multiple cells, and each component carrier corresponds to one cell. The coverage size of a cell may be different due to the difference in the frequency of the component carriers and the power usage of the hybrid network. Among the multiple cells, one cell is used for the RRC link, called the primary cell, and the primary component carrier is used. Other cells, called secondary cells, use other component carriers, that is, auxiliary carriers.

Regarding the primary cell and the secondary cell, the 3GPP 36.331 protocol is defined as follows:

The primary cell is a cell that operates at a primary frequency point; in this cell, the UE performs both an initial connection establishment process or a re-establishment process, and also serves as a primary cell in the handover process.

The secondary cell is a cell operating at a secondary frequency point; in this cell, an RRC connection is established through configuration to provide additional radio resources.

For a serving cell, for a connected state UE that does not have a CA configured, only one primary cell serves as a serving cell. For a connected UE configured with a CA, the serving cell is used to indicate one or more cells composed of a primary cell and a secondary cell.

When the base station and the UE have established a carrier aggregation CA, the base station determines the target cell according to the signal quality of the serving cell or the load size. The voice quality of VoLTE is strongly correlated with the signal quality (signal strength and interference strength) on the wireless side. As the signal quality of the wireless side deteriorates, the voice quality will drop rapidly after an inflection point. Similarly, as the load in the LTE cell increases, the voice quality of voice users carried in the cell will also drop rapidly after an inflection point occurs. Therefore, in an LTE multi-carrier scenario, a carrier that is most suitable for carrying VoLTE can be selected to carry voice, minimize the impact of interference load, and obtain a voice experience optimal.

Optionally, the number of the target cells is at least one. For example, one or more of the signals with higher signal quality are determined to be the target cell, or one or more of the cells with less cell load are determined to be the target cell. The number of target cells does not exceed the number of serving cells.

303. The base station transmits a VoLTE downlink voice packet on the target cell or instructs the UE to send a VoLTE uplink voice packet on the target cell.

Optionally, the carrier aggregation CA includes an uplink CA.

It should be noted that, in the case that the base station and the UE have established an uplink CA, the uplink voice packet of the VoLTE can be transmitted on different cells by using the uplink CA. Specifically, when the base station and the UE have established an uplink CA, the base station determines whether the determined target cell supports VoLTE. If the target cell supports VoLTE, the base station sends an uplink scheduling information indication UL Grant indication on the physical downlink control channel PDCCH. The UE sends a VoLTE uplink voice packet on the target cell.

Optionally, the carrier aggregation CA includes a downlink CA;

It should be noted that, in the case that the base station and the UE have established a downlink CA, the downlink voice packet of the VoLTE can be transmitted on different cells by using the downlink CA. Specifically, when the base station and the UE have established a downlink CA, the base station determines whether the determined target cell supports VoLTE. If the target cell supports VoLTE, the base station transmits a VoLTE downlink voice packet on the target cell.

Further, when the number of the target cells is two, the base station transmits a VoLTE downlink voice packet on the target cell or instructs the UE to send a VoLTE uplink voice packet on the target cell, including:

In the traditional solution, the uplink and downlink bearers of VoLTE can only be carried in the same cell. If you want to transfer VoLTE to other inter-frequency cells, you need to trigger a hard handover, which will inevitably reduce the voice quality. Through the CA technology, for the CA users, the VoLTE bearer can be transferred between different cells without switching only by scheduling, and the loss caused by the handover can be avoided; and the uplink and downlink bearers of the VoLTE can be separately carried in different cells. Provide a more flexible bearer strategy and flexibly adapt to various scenarios.

For example, the two target cells determined in the step 302 are the primary cell Pcell and the secondary cell Scell respectively, and the uplink and downlink bearers of the VoLTE are carried in different cells by the solution of the present invention, and the bearer mode is only carried by the PLTE from the Pcell to the pass. The scheduling method is transformed into the following ways:

1. The VoLTE uplink and downlink voice packets are sent on the Pcell.

2. The voice packets of the VoLTE uplink and downlink are sent on the Scell.

3. The VoLTE uplink voice packet is sent on the Pcell, and the downlink voice packet is sent on the Scell;

4. The VoLTE uplink voice packet is sent on the Scell, and the downlink voice packet is sent on the Pcell.

In the embodiment of the present invention, the base station receives the VoLTE call request sent by the user equipment UE, and establishes a VoLTE bearer with the UE in the cell where the UE camps; when the base station and the UE have established a carrier aggregation CA, After the CA is established, the base station and the UE simultaneously connect multiple carriers, and each carrier corresponds to one cell, and the cooperation of these cells a serving cell, the base station determining a target cell according to a signal quality of the serving cell or a load size, and transmitting a VoLTE downlink voice packet on the target cell or instructing the UE to send a VoLTE uplink voice packet on the target cell; Therefore, the bearer of the VoLTE voice packet on the cell is implemented in a scheduling manner, and the voice quality of the voice call is improved.

The voice scheduling method provided by the present invention is described below in a specific application scenario.

The UE initiates a VoLTE call request in an idle state or a connected state. After receiving the voice bearer setup request of the MME, the base station eNodeB establishes a VoLTE bearer with the UE currently camped on the UE, and initiates a voice call. When the base station and the UE have established an uplink carrier aggregation CA, the base station determines a first target cell according to a signal quality of the serving cell or a load size, when the base station and the UE have established a downlink carrier aggregation CA. The base station determines the second target cell according to the signal quality of the serving cell or the load size. It is assumed that the first target cell is the primary cell Pcell, the second target cell is the secondary cell Scell, and both the Pcell and the Scell support VoLTE. As shown in FIG. 4, the primary cell Pcell and the secondary cell Scell support VoLTE, and each cell includes an uplink UL and a downlink DL. With the solution of the present invention, the uplink and downlink bearers of the VoLTE can be implemented in different cells, and the bearer mode is changed from the Pcell bearer to the scheduling mode by the following methods:

1. The VoLTE uplink and downlink voice packets are sent on the Pcell.

2. The voice packets of the VoLTE uplink and downlink are sent on the Scell.

The embodiment of the present invention further provides a voice scheduling apparatus 400, which may be implemented by the base station 200 shown in FIG. 2, or may be implemented by an application-specific integrated circuit (ASIC: ASIC), or Programmable logic device (English: programmable logic device, abbreviation: PLD) implementation. The PLD may be a complex programmable logic device (CPLD), an FPGA, a general array logic (GAL), or any combination thereof. The voice scheduling apparatus 400 is configured to implement a method performed by the base station side in the voice scheduling method shown in FIG. When the voice scheduling method shown in FIG. 3 is implemented by software, the voice scheduling apparatus 400 may also be a software module.

As shown in FIG. 5, the schematic diagram of the organization of the voice scheduling apparatus 400 includes a processing unit 402 and a transceiver unit 404.

When the transceiver unit 404 is working, the following steps are performed:

Receiving a VoLTE call request sent by the user equipment UE.

When the processing unit 402 is working, the following steps are performed:

Establishing a VoLTE bearer with the UE in a cell where the UE camps;

In the embodiment of the present invention, the transceiver unit 404 receives the VoLTE call request sent by the user equipment UE, and the processing unit 402 establishes a VoLTE bearer with the UE in the cell where the UE camps; when the carrier aggregation CA is established with the UE, Since the UE is connected to multiple carriers at the same time after establishing the CA, each carrier corresponds to one cell, and the collection of these cells As the serving cell, the processing unit 402 determines the target cell according to the signal quality of the serving cell or the load size, and transmits a VoLTE downlink voice packet on the target cell or instructs the UE to send a VoLTE uplink voice packet on the target cell. Therefore, the bearer of the VoLTE voice packet on the cell is implemented in a scheduling manner, and the voice quality of the voice call is improved.

Optionally, the carrier aggregation CA includes an uplink CA. The processing unit 402 is configured to send uplink scheduling information on a physical downlink control channel PDCCH when the uplink CA is established by the UE, where the uplink scheduling information is used to indicate The UE sends a VoLTE uplink voice packet on the target cell.

Optionally, the carrier aggregation CA includes a downlink CA. The processing unit 402 is configured to transmit a VoLTE downlink voice packet on the target cell when the downlink CA is established by the UE.

Optionally, the processing unit 402 is further configured to: when the carrier aggregation CA is not established with the UE, send an operation instruction, where the operation instruction is used to indicate that the CA is established with the UE.

Optionally, the number of the target cells is at least one.

Optionally, when the number of the target cells is two, the processing unit 402 is configured to transmit a VoLTE downlink voice packet on the target cell or instruct the UE to send a VoLTE uplink voice packet on the target cell. ,include:

The processing unit 402 is configured to transmit a VoLTE downlink voice packet on the first target cell or the second target cell; or

The processing unit 402 is configured to instruct the UE to send a VoLTE uplink voice packet on the first target cell or the second target cell.

The embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium can store a program, and the program includes some or all of the steps of the voice scheduling method described in the foregoing method embodiments.

The related descriptions of the above-mentioned devices can be understood by referring to the related descriptions and effects of the method embodiments, and no further description is made herein.

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

In the several embodiments provided by the present invention, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

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

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

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

The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the embodiments are modified, or the equivalents of the technical features are replaced by the equivalents of the technical solutions of the embodiments of the present invention.

Claims

A voice scheduling method, comprising:

Receiving, by the base station, a VoLTE call request sent by the user equipment UE, and establishing a VoLTE bearer with the UE in the cell where the UE camps;

When the base station and the UE have established a carrier aggregation CA, the base station determines a target cell according to a signal quality of the serving cell or a load size, where the serving cell includes a primary cell and a secondary cell;

The base station transmits a VoLTE downlink voice packet on the target cell or instructs the UE to send a VoLTE uplink voice packet on the target cell.
The method according to claim 1, wherein the carrier aggregation CA comprises an uplink CA;

When the base station and the UE have established an uplink CA, the base station sends uplink scheduling information on the physical downlink control channel PDCCH; the uplink scheduling information is used to instruct the UE to send VoLTE uplink voice on the target cell. package.
The method according to claim 1, wherein the carrier aggregation CA comprises a downlink CA;

When the base station and the UE have established a downlink CA, the base station transmits a VoLTE downlink voice packet on the target cell.
A method according to any one of claims 1 to 3, characterized in that

When the base station and the UE do not establish a carrier aggregation CA, the base station sends an operation instruction, where the operation instruction is used to instruct the base station to establish a CA with the UE.
The method according to any one of claims 1 to 3, characterized in that the number of target cells is at least one.
The method according to claim 5, wherein when the number of the target cells is two, the base station transmits a VoLTE downlink voice packet on the target cell or indicates that the UE is on the target cell Send VoLTE uplink voice packets, including:

Transmitting, by the base station, a VoLTE downlink voice packet on the first target cell or the second target cell; or

The base station instructs the UE to send a VoLTE uplink voice packet on the first target cell or the second target cell.
A voice scheduling device, comprising:

a transceiver unit, configured to receive a VoLTE call request sent by the user equipment UE;

a processing unit, configured to establish a VoLTE bearer with the UE in a cell where the UE camps;

When the carrier aggregation CA is established with the UE, the target cell is determined according to the signal quality of the serving cell or the load size, where the serving cell includes a primary cell and a secondary cell;

And transmitting a VoLTE downlink voice packet on the target cell or instructing the UE to send a VoLTE uplink voice packet on the target cell.
The device according to claim 7, wherein the carrier aggregation CA comprises an uplink CA; the processing unit is configured to send uplink scheduling information on a physical downlink control channel PDCCH when the UE has established an uplink CA; The uplink scheduling information is used to instruct the UE to send a VoLTE uplink voice packet on the target cell.
The apparatus according to claim 7, wherein said carrier aggregation CA comprises a downlink CA; said The processing unit is configured to transmit a VoLTE downlink voice packet on the target cell when the downlink CA is established by the UE.
The apparatus according to any one of claims 7 to 9, wherein the processing unit is further configured to: when the carrier aggregation CA is not established with the UE, send an operation instruction, where the operation instruction is used to indicate The UE establishes a CA.
The apparatus according to any one of claims 7 to 9, wherein the number of the target cells is at least one.
The apparatus according to claim 11, wherein when the number of the target cells is two, the processing unit is configured to transmit a VoLTE downlink voice packet on the target cell or indicate that the UE is in the The VoLTE uplink voice packet is sent on the target cell, including:

The processing unit is configured to transmit a VoLTE downlink voice packet on the first target cell or the second target cell; or

The processing unit is configured to instruct the UE to send a VoLTE uplink voice packet on the first target cell or the second target cell.