JP2018532346A - Cooperative scheduling method, apparatus, and system - Google Patents

Abstract

A coordinated scheduling method, apparatus, and system are provided. The method is a step of receiving a first cooperative activation request transmitted by a macro base station, wherein the first cooperative activation request is transmitted to a first cell managed by a small cell together with the macro base station. Instructing the terminal to perform cooperative scheduling on the PDCCH, and in accordance with the second cooperative activation request transmitted by the macro base station, so that the cooperative terminal receives a control message on the PDCCH of the first cell. Transmitting a control message on the PDCCH of the first cell according to the cooperative activation request of 1, wherein the second cooperative activation request is made to the cooperative terminal by the first cell and the macro base station. Instructing to accept the received coordinated scheduling on the PDCCH and including a physical cell identifier (PCI) of the first cell. The present invention solves the problem of low cooperative scheduling efficiency and improves cooperative scheduling efficiency.

Description

  The present invention relates to the communication field, and in particular, to a cooperative scheduling method, apparatus and system.

  With the trend of intelligent terminals, services are driving the active development of mobile broadband (MBB for short), and network traffic is exploding. Currently, heterogeneous networks (HetNet for short) can include macro base stations and small cells. When the capacity of the macro base station cannot be expanded, a small cell can be used to increase the network capacity. For long term evolution (LTE) networks in heterogeneous networks, network placement for macro base stations and small cells may be done by intra-frequency placement. Intra-frequency allocation means that the macro base station and the small cell use the same transmission frequency channel number. The frequency channel number is a frequency number. Each frequency channel number (integer accuracy) corresponds to one frequency value (0.1 MHz accuracy). In order to control the interference between the macro base station and the small cell in the intra frequency arrangement, it is necessary to use a cooperative solution between the macro base station and the small cell. Macro base stations and small cells may cooperate closely to further increase network capacity and improve user experience.

  In one related technology, a macro base station has a relatively high transmission power and a relatively wide coverage area, and a small cell has a relatively low transmission power, mainly to cover hot spots Used, a macro base station usually covers much more terminals than a small cell and is heavier than a small cell. Therefore, in the existing cooperative solution between a macro base station and a small cell, basically, a terminal that is served by a macro base station cannot reduce the load and increase the overall network capacity. To help, co-scheduled by macro base stations and small cells. Coordinated scheduling means that the macro base station and the small cell negotiate a scheduling solution for the same terminal. Currently, in the coordinated scheduling process, the control plane of the terminal served by the macro base station remains in the macro base station, and the data plane is coordinated scheduled by the macro base station and the small cell. Specifically, the small cell transmits a request to allocate a physical downlink control channel (English: Physical Downlink Control Channel, abbreviated as PDCCH) resource to the terminal to the macro base station. The macro base station allocates the PDCCH resource to the terminal according to the request, and feeds back the allocation result to the small cell. The small cell schedules a physical downlink shared channel (English: Physical Downlink Shared Channel, abbreviated as PDSCH) or a physical uplink shared channel (English: Physical Uplink Shared Channel, abbreviated as PUSCH) according to the allocation result.

  However, since the macro base station has a relatively heavy load and the macro base station has limited PDCCH resources, there is a high possibility that all the PDCCH resources of the macro base station are occupied. A terminal that has not been assigned a PDCCH cannot be scheduled. This affects the success rate of cooperative scheduling, and as a result, the cooperative scheduling efficiency is relatively low.

  In order to solve the problem of relatively low cooperative scheduling efficiency in the related art, the present invention provides a cooperative scheduling method, apparatus and system. The technical solution is as follows.

  The present invention can be applied to a HetNet network, specifically, an LTE HetNet network, in order to perform coordinated scheduling of macro base stations and small cells in an intra frequency allocation process.

According to a first aspect, the present invention provides a coordinated scheduling method, the method is applied to a small cell,
A step of receiving a first cooperative activation request transmitted by a macro base station, wherein the first cooperative activation request is transmitted to a first cell managed by a small cell together with the macro base station; Are coordinated on the physical downlink control channel (PDCCH), the coordinated terminal is a terminal that can be determined and coordinated by the macro base station or the small cell, One cooperative activation request may be generated by the macro base station according to the cell configuration parameters sent by the small cell managing the first cell, the cell configuration parameters may include PCI, and the PCI identifies the cell Is the physical layer cell identifier number used for the cell configuration parameter in another application. A meter, e.g., further comprising associated channel parameters of the cell; and
On the PDCCH of the first cell according to the first cooperative activation request, so that the cooperative terminal receives a control message on the PDCCH of the first cell according to the second cooperative activation request transmitted by the macro base station. The second cooperative activation request is for instructing the cooperative terminal to accept the cooperative scheduling performed by the first cell and the macro base station on the PDCCH. And the second cooperative activation request includes a step of including a physical cell identifier (PCI) of the first cell.

Optionally, in one embodiment of the present invention, the first cooperative activation request may be generated according to multiple scenarios. The first cooperative activation request indicates different channels for cooperative scheduling in different scenarios. The first coordinated activation request is used to instruct the first cell, along with the macro base station, to coordinately schedule the coordinated terminal on the PDCCH and physical downlink shared channel (PDSCH), or The first coordinated activation request is used to instruct the first cell, along with the macro base station, to coordinately schedule the coordinated terminal on the PDCCH, PDSCH, and physical uplink shared channel (PUSCH), The control message is used to instruct the first cell together with the macro base station to perform cooperative scheduling of the cooperative terminal on the PDSCH. After receiving the first cooperative activation request sent by the macro base station, the method comprises:
Transmit the downlink data message to the cooperative terminal on the PDSCH of the first cell according to the first cooperative activation request so that the cooperative terminal receives the downlink data message on the PDSCH of the first cell according to the control message The method further includes the step of:

Optionally, the first cooperative activation request is used to instruct the first cell, along with the macro base station, to cooperatively schedule the cooperative terminal on the PDCCH and PUSCH, or the first cooperative activation request. The activation request is used to instruct the first cell to cooperate with the macro base station to coordinate the cooperating terminal on the PDCCH, PDSCH, and PUSCH, and the control message is sent to the macro cell in the first cell. Used with base stations to instruct cooperative terminals to perform cooperative scheduling on PUSCH,
After sending the control message on the PDCCH of the first cell, the method
Receiving an uplink data message sent by the cooperative terminal on the PUSCH of the first cell according to the first cooperative activation request, wherein the uplink data message is sent by the cooperative terminal according to the control message The method further includes a step.

Optionally, prior to receiving the first cooperative activation request sent by the macro base station, the method includes:
Reporting the cell configuration parameters to the macro base station after the first cell is activated, the cell configuration parameters further comprising a physical cell identifier (PCI).

Optionally, the first cooperative activation request includes an identifier of the cooperative terminal, and prior to the step of transmitting a control message on the PDCCH of the first cell according to the first cooperative activation request, the method includes:
Generating a control message according to the first cooperative activation request, wherein the control message further includes an identifier of the cooperative terminal.

Optionally, the uplink data message includes channel parameters measured by the cooperating terminal, and after sending the control message on the PDCCH of the first cell according to the first co-activation request, the method comprises:
Determining whether the cooperating terminal can maintain the coordinating state according to the channel parameters;
A step of transmitting a first deactivation notification to a macro base station when the cooperating terminal cannot maintain a coordinating state, wherein the first deactivation notification stops coordinated scheduling in the macro base station; Used to instruct to step, and
Sending a deactivation notification to the cooperative terminal, wherein the second deactivation notification is further used to instruct the cooperative terminal to stop the cooperative scheduling.

Optionally, the first cooperative activation request includes an agreed transmission time interval (TTI) identifier;
According to the first cooperative activation request, sending a control message on the PDCCH of the first cell,
Transmitting a control message on the PDCCH of the first cell at the TTI indicated by the agreed TTI identifier.

  In this embodiment of the present invention, the small cell may allocate PDCCH resources to the cooperative terminals independently. The macro base station instructs the cooperating terminal to analyze the control message transmitted on the PDCCH of the first cell of the small cell to ensure the integration of the uplink control plane and the data plane. Activate the cooperation function on the cooperation terminal using the first cooperation activation request.

According to a second aspect, the present invention provides a coordinated scheduling method, and the method is applied to a coordinated terminal. A cooperative terminal is a terminal that can be determined by a macro base station or a small cell and can be cooperatively scheduled. It can be a device having. The cooperative scheduling method is
Receiving a second cooperative activation request transmitted by the macro base station, the second cooperative activation request being made by the first cell and the macro base station on the PDCCH to the cooperative terminal; The first cell is determined when the macro base station determines that there is a terminal that needs to perform coordinated scheduling and can enter the coordinated state. The second cooperative activation request includes the first cell's PCI, and the second cooperative activation request may be conveyed in the MAC notification, and
Receiving a control message transmitted by the small cell managing the first cell on the PDCCH of the first cell according to the second cooperative activation request.

Optionally, receiving a control message sent by a small cell managing the first cell on the PDCCH of the first cell according to the second cooperative activation request,
Obtaining the small cell transmission frequency channel number, the cell bandwidth of the first cell, and the number of PDCCH symbols of the first cell according to PCI;
Determining the PDCCH location of the first cell according to the transmission frequency channel number, cell bandwidth, and number of PDCCH symbols;
Receiving a control message transmitted by a small cell that manages the first cell at the PDCCH location of the first cell.

Optionally, according to PCI, obtaining a small cell transmission frequency channel number, a cell bandwidth of the first cell, and a number of PDCCH symbols of the first cell,
Obtaining a preset transmission frequency channel number;
Using the measured cell bandwidth of a cell corresponding to PCI as the cell bandwidth of the first cell;
Using the number of PDCCH symbols of the cell corresponding to PCI as the number of PDCCH symbols of the first cell and measured on the physical control format indication channel (PCFICH) of the cell corresponding to PCI. .

Optionally, the second cooperative activation request includes an agreed transmission time interval (TTI) identifier;
According to the second cooperative activation request, on the PDCCH of the first cell, receiving a control message sent by a small cell that manages the first cell,
Receiving a control message transmitted by the small cell managing the first cell on the PDCCH of the first cell at the TTI indicated by the agreed TTI identifier.

  In this embodiment of the invention, the cooperative terminal may comprise a cooperative scheduling module. This module may be a software module configured to perform a cooperative scheduling function. After receiving the second cooperative activation request, the cooperative scheduling module is enabled to activate the cooperative scheduling function. After receiving the deactivation request, the cooperative scheduling module is disabled. The cooperative terminal can recognize the cooperative scheduling process between the macro base station and the small cell.

According to a third aspect, the present invention provides a coordinated scheduling method, the method is applied to a macro base station,
When it is determined that there is a terminal that can enter the cooperative state, determining a first cell that needs to perform cooperative scheduling;
The step of transmitting the first cooperative activation request to the small cell managing the first cell so that the small cell transmits a control message on the PDCCH of the first cell according to the first cooperative activation request. The first cooperative activation request is used to instruct the first cell managed by the small cell to cooperate with the macro base station to cooperatively schedule the cooperative terminal on the PDCCH, and
In a step of sending a second cooperative activation request to a cooperative terminal that needs to be cooperatively scheduled so that the cooperative terminal receives a control message on the PDCCH of the first cell according to the second cooperative activation request. And the second cooperative activation request is used to instruct the cooperative terminal to accept the cooperative scheduling performed by the first cell and the macro base station on the PDCCH. The activation request includes the steps including the PCI of the first cell.

Optionally, prior to sending the first cooperative activation request to the small cell that manages the first cell, the method includes:
When coordinated scheduling needs to be performed, a step of generating a first coordinated activation request, wherein the first coordinated activation request, together with the macro base station, the coordinated terminal is connected to the PDCCH and the first cell. Used to direct coordinated scheduling on the physical downlink shared channel (PDSCH), or a first coordinated activation request is sent to the first cell, along with the macro base station, the coordinated terminal PDCCH and Used to direct coordinated scheduling on a physical uplink shared channel (PUSCH), or a first coordinated activation request, with a macro base station, PDCCH, The method further includes steps used to instruct to perform cooperative scheduling on PDSCH and PUSCH.

  Optionally, the first cooperative activation request includes an agreed transmission time interval (TTI) identifier and the second cooperative activation request includes an agreed transmission time interval (TTI) identifier.

According to a fourth aspect, the present invention provides a coordinated scheduling device, the device is applied to a small cell,
A first receiving unit configured to receive a first cooperative activation request transmitted by a macro base station, wherein the first cooperative activation request is managed by a small cell; Used to instruct the cell to coordinate with the macro base station on the physical downlink control channel (PDCCH), which is determined and coordinated by the macro base station or the small cell. A first receiving unit that is a terminal capable of
On the PDCCH of the first cell according to the first cooperative activation request, so that the cooperative terminal receives a control message on the PDCCH of the first cell according to the second cooperative activation request transmitted by the macro base station. A first transmission unit configured to transmit a control message at a second coordinated activation request made to the cooperative terminal by the first cell and the macro base station on the PDCCH. And the second cooperative activation request comprises a first transmission unit including a physical cell identifier (PCI) of the first cell.

Optionally, the first cooperative activation request is used to instruct the first cell, along with the macro base station, to cooperatively schedule the cooperative terminal on the PDCCH and physical downlink shared channel (PDSCH). Or the first coordinated activation request to instruct the first cell, along with the macro base station, to coordinately schedule the coordinated terminal on the PDCCH, PDSCH, and physical uplink shared channel (PUSCH) The control message is used to instruct the first cell, along with the macro base station, to co-schedule the cooperating terminal on the PDSCH,
Transmit the downlink data message to the cooperative terminal on the PDSCH of the first cell according to the first cooperative activation request so that the cooperative terminal receives the downlink data message on the PDSCH of the first cell according to the control message A second transmission unit configured to:

Optionally, the first cooperative activation request is used to instruct the first cell, along with the macro base station, to cooperatively schedule the cooperative terminal on the PDCCH and PUSCH, or the first cooperative activation request. The activation request is used to instruct the first cell to cooperate with the macro base station to coordinate the cooperating terminal on the PDCCH, PDSCH, and PUSCH, and the control message is sent to the macro cell in the first cell. Used with the base station to instruct the cooperating terminal to co-schedule on the PUSCH,
A second receiving unit configured to receive an uplink data message transmitted by a cooperative terminal on the PUSCH of the first cell according to the first cooperative activation request, the uplink data message Further comprises a second receiving unit transmitted by the cooperative terminal according to the control message.

Optionally, the device
A reporting unit configured to report cell configuration parameters to the macro base station after the first cell is activated, the cell configuration parameters including a physical cell identifier (PCI) Further prepare.

Optionally, the first cooperative activation request includes an identifier of the cooperative terminal, and the device
A generation unit configured to generate a control message according to the first cooperative activation request, the control message further comprising a generation unit including an identifier of the cooperative terminal.

Optionally, the uplink data message includes channel parameters measured by the cooperating terminal, and the device
A determination unit configured to determine whether the cooperative terminal can maintain the cooperative state according to the channel parameters;
A third transmission unit configured to transmit a first deactivation notification to a macro base station when the cooperating terminal is unable to maintain a coordinating state, wherein the first deactivation notification is A third transmission unit used to instruct the macro base station to stop cooperative scheduling; and
A fourth transmission unit configured to send a deactivation notification to the cooperative terminal, the second deactivation notification used to instruct the cooperative terminal to stop cooperative scheduling And a fourth transmission unit.

Optionally, the first cooperative activation request includes an agreed transmission time interval (TTI) identifier, and the first transmission unit is:
It is configured to transmit a control message on the PDCCH of the first cell in the TTI indicated by the agreed TTI identifier.

According to a fifth aspect, the present invention provides a coordinated scheduling apparatus, the apparatus is applied to a coordinated terminal, and the coordinated terminal is determined by a macro base station or a small cell and can be coordinated scheduled Terminal, and the device
A first receiving unit configured to receive a second cooperative activation request transmitted by the macro base station, wherein the second cooperative activation request is sent to the cooperative terminal on the PDCCH; Used to instruct to accept the coordinated scheduling performed by one cell and the macro base station, the first cell needs to perform coordinated scheduling and there is a terminal that can enter the coordinated state A cell determined when the macro base station determines, and the second cooperative activation request includes the first receiving unit including the PCI of the first cell;
A second receiving unit configured to receive a control message transmitted by the small cell managing the first cell on the PDCCH of the first cell according to the second cooperative activation request. .

Optionally, the second receiving unit is
An acquisition subunit configured to acquire the transmission frequency channel number of the small cell, the cell bandwidth of the first cell, and the number of PDCCH symbols of the first cell according to PCI;
A determining subunit configured to determine the PDCCH location of the first cell according to a transmission frequency channel number, a cell bandwidth, and a number of PDCCH symbols;
A receiving subunit configured to receive a control message transmitted by a small cell managing the first cell at the PDCCH location of the first cell.

Optionally, the acquisition subunit is
Get the preset transmission frequency channel number,
Use the measured cell bandwidth of the cell corresponding to PCI as the cell bandwidth of the first cell,
The number of PDCCH symbols of the first cell is that of a cell corresponding to PCI, and is configured to use the number of PDCCH symbols measured on the physical control format indication channel (PCFICH) of the cell corresponding to PCI. The

Optionally, the second cooperative activation request includes an agreed transmission time interval (TTI) identifier, and the second receiving unit
The TTI indicated by the agreed TTI identifier is configured to receive a control message transmitted by the small cell managing the first cell on the PDCCH of the first cell.

According to a sixth aspect, a coordinated scheduling apparatus is provided, the apparatus is applied to a macro base station,
A determination unit configured to determine a first cell that needs to perform cooperative scheduling when determining that there is a terminal capable of entering the cooperative state;
Configured to send the first cooperative activation request to the small cell managing the first cell, so that the small cell sends a control message on the PDCCH of the first cell according to the first cooperative activation request The first cooperative activation request is directed to the first cell managed by the small cell to cooperate with the macro base station to cooperatively schedule the cooperative terminal on the PDCCH. A first transmission unit that is a terminal capable of being coordinated and determined by a macro base station or a small cell,
Send a second cooperative activation request to the cooperative terminals that need to be cooperatively scheduled so that the cooperative terminals receive control messages on the PDCCH of the first cell according to the second cooperative activation request The configured second transmission unit, the second cooperative activation request instructs the cooperative terminal to accept cooperative scheduling performed by the first cell and the macro base station on the PDCCH And the second cooperative activation request comprises a second transmission unit including the PCI of the first cell.

Optionally, the device
A generating unit configured to generate a first cooperative activation request when cooperative scheduling needs to be performed, wherein the first cooperative activation request is sent to a macro base station in a first cell. Used to instruct the cooperating terminal to co-schedule on the PDCCH and Physical Downlink Shared Channel (PDSCH), or the first co-activation request is sent to the first cell in the macro base station And is used to instruct the cooperative terminal to perform cooperative scheduling on the PDCCH and the physical uplink shared channel (PUSCH), or the first cooperative activation request is sent to the first cell in the macro base station And a generation unit used to instruct the cooperative terminal to perform cooperative scheduling on the PDCCH, PDSCH, and PUSCH. .

  Optionally, the first cooperative activation request includes an agreed transmission time interval (TTI) identifier and the second cooperative activation request includes an agreed transmission time interval (TTI) identifier.

According to a seventh aspect, the present invention provides a coordinated scheduling apparatus, the apparatus is applied to a small cell, and comprises a transmitter, a receiver, and a processor,
The transmitter is configured to receive a first cooperative activation request sent by the macro base station, and the first cooperative activation request is sent to the first cell managed by the small cell along with the macro base station. Used to instruct the cooperative terminal to perform cooperative scheduling on the physical downlink control channel (PDCCH), which is determined by a macro base station or a small cell and is a terminal capable of cooperative scheduling Yes,
The receiver receives the control message on the PDCCH of the first cell according to the second cooperative activation request transmitted by the macro base station, and the first cell according to the first cooperative activation request The second coordinated activation request is configured to send a control message on the PDCCH of the PDCCH to accept the coordinated scheduling performed by the first cell and the macro base station on the PDCCH to the cooperating terminal. Used to indicate, the second cooperative activation request includes the physical cell identifier (PCI) of the first cell.

Optionally, the first cooperative activation request is used to instruct the first cell, along with the macro base station, to cooperatively schedule the cooperative terminal on the PDCCH and physical downlink shared channel (PDSCH). Or the first coordinated activation request to instruct the first cell, along with the macro base station, to coordinately schedule the coordinated terminal on the PDCCH, PDSCH, and physical uplink shared channel (PUSCH) Used, the control message is used to instruct the first cell together with the macro base station to cooperatively schedule the cooperative terminal on the PDSCH. After receiving the first cooperative activation request sent by the macro base station,
The transmitter transmits downlink data to the cooperative terminal on the PDSCH of the first cell according to the first cooperative activation request so that the cooperative terminal receives the downlink data message on the PDSCH of the first cell according to the control message. Further configured to send the message.

  Optionally, the first cooperative activation request is used to instruct the first cell, along with the macro base station, to cooperatively schedule the cooperative terminal on the PDCCH and PUSCH, or the first cooperative activation request. The activation request is used to instruct the first cell to cooperate with the macro base station to coordinate the cooperating terminal on the PDCCH, PDSCH, and PUSCH, and the control message is sent to the macro cell in the first cell. Along with the base station, it is used to instruct the cooperative terminal to perform cooperative scheduling on the PUSCH. The receiver is configured to receive an uplink data message transmitted by the cooperative terminal on the PUSCH of the first cell according to the first cooperative activation request, wherein the uplink data message is received according to the control message. Sent by.

  Optionally, the transmitter is configured to report cell configuration parameters to the macro base station after the first cell is activated, the cell configuration parameters including a physical cell identifier (PCI).

  Optionally, the first cooperative activation request includes an identifier of the cooperative terminal, the processor generates a control message according to the first cooperative activation request, and the control message includes the identifier of the cooperative terminal.

Optionally, the uplink data message includes channel parameters measured by the cooperating terminal,
The processor is further configured to determine whether the cooperating terminal can maintain the coordinating state according to the channel parameter;
The transmitter is further configured to send a first deactivation notification to the macro base station when the cooperating terminal cannot maintain the coordinating state, and the first deactivation notification is sent to the macro base station, Used to stop collaborative scheduling,
The transmitter is further configured to send a deactivation notification to the cooperative terminal, and the second deactivation notification is used to instruct the cooperative terminal to stop cooperative scheduling;
The first cooperative activation request includes an agreed transmission time interval (TTI) identifier, and the transmitter transmits a control message on the PDCCH of the first cell at the TTI indicated by the agreed TTI identifier. Configured as follows.

According to an eighth aspect, the present invention provides a coordinated scheduling apparatus, the apparatus is applied to a coordinated terminal, and the coordinated terminal can be determined by a macro base station or a small cell and can be coordinated scheduled. A terminal, the apparatus comprises a receiver, a transmitter, and a processor;
The receiver is configured to receive a second cooperative activation request transmitted by the macro base station, and the second cooperative activation request is transmitted to the cooperative terminal on the PDCCH, the first cell and the macro base station. When the macro base station determines that there is a terminal that needs to perform coordinated scheduling and can enter the coordinated state. The second cooperative activation request includes the PCI of the first cell, and
The receiver is further configured to receive a control message transmitted by the small cell managing the first cell on the PDCCH of the first cell according to the second cooperative activation request.

Optionally, the processor is configured to obtain a transmission frequency channel number of the small cell, a cell bandwidth of the first cell, and a number of PDCCH symbols of the first cell according to PCI,
The processor is further configured to determine the PDCCH location of the first cell according to the transmission frequency channel number, the cell bandwidth, and the number of PDCCH symbols;
The receiver is configured to receive a control message transmitted by a small cell that manages the first cell at the PDCCH location of the first cell.

Optionally, the processor
Get the preset transmission frequency channel number,
Use the measured cell bandwidth of the cell corresponding to PCI as the cell bandwidth of the first cell,
The number of PDCCH symbols of the first cell is that of a cell corresponding to PCI, and is configured to use the number of PDCCH symbols measured on the physical control format indication channel (PCFICH) of the cell corresponding to PCI. The

  Optionally, the second coordinated activation request includes an agreed transmission time interval (TTI) identifier, and the receiver is configured to perform the first transmission on the PDCCH of the first cell at the TTI indicated by the agreed TTI identifier. It is configured to receive a control message transmitted by a small cell that manages one cell.

According to a ninth aspect, the present invention provides a coordinated scheduling apparatus, which is applied to a macro base station and comprises a receiver, a transmitter, and a processor,
When the processor determines that there is a terminal that can enter the cooperative state, the processor is configured to determine a first cell that needs to perform cooperative scheduling;
The transmitter sends a first cooperative activation request to the small cell that manages the first cell so that the small cell sends a control message on the PDCCH of the first cell according to the first cooperative activation request The first cooperative activation request is configured to be used to instruct the first cell managed by the small cell to cooperate with the macro base station to cooperatively schedule the cooperative terminal on the PDCCH. The terminal is a terminal that can be determined by a macro base station or a small cell and can be co-scheduled,
The transmitter sends a second cooperative activation request to the cooperative terminals that need to be cooperatively scheduled so that the cooperative terminal receives control messages on the PDCCH of the first cell according to the second cooperative activation request The second cooperative activation request is configured to be used to instruct the cooperative terminal to accept the cooperative scheduling performed by the first cell and the macro base station on the PDCCH. The second cooperative activation request includes the PCI of the first cell.

Optionally, the processor
It is further configured to generate a first cooperative activation request when coordinated scheduling needs to be performed, and the first cooperative activation request, together with the macro base station, sends the cooperative terminal to the PDCCH in the first cell. And the first cooperative activation request is used to instruct to perform coordinated scheduling on the physical downlink shared channel (PDSCH) or the PDCCH with the macro base station in the first cell. And the first cooperative activation request is used to instruct to coordinately schedule on the physical uplink shared channel (PUSCH) or the PDCCH with the macro base station in the first cell , PDSCH, and PUSCH are used to instruct to perform cooperative scheduling.

  Optionally, the first cooperative activation request includes an agreed transmission time interval (TTI) identifier and the second cooperative activation request includes an agreed transmission time interval (TTI) identifier.

According to a tenth aspect, the present invention provides a cooperative scheduling system comprising a macro base station, a small cell, and a cooperative terminal. A cooperative terminal is a terminal that can be determined by a macro base station or a small cell and can be cooperatively scheduled,
The small cell includes the coordinated scheduling device according to the fourth aspect,
The terminal includes the cooperative scheduling device according to the fifth aspect,
The macro base station includes the coordinated scheduling device according to the sixth aspect.

According to an eleventh aspect, the present invention provides a coordinated scheduling system comprising a macro base station, a small cell, and a coordinated terminal. A cooperative terminal is a terminal that can be determined by a macro base station or a small cell and can be cooperatively scheduled,
The small cell includes the cooperative scheduling device according to the seventh aspect,
The terminal includes the cooperative scheduling device according to the eighth aspect,
The macro base station includes the coordinated scheduling device according to the ninth aspect.

The present invention provides a non-transitory computer-readable recording medium, and when an instruction in the recording medium is executed by a processor of the cooperative scheduling apparatus, the apparatus can execute the cooperative scheduling method. The method is
A step of receiving a first cooperative activation request transmitted by a macro base station, wherein the first cooperative activation request is transmitted to a first cell managed by a small cell together with the macro base station; The coordinated terminal is determined by a macro base station or a small cell and is a terminal capable of coordinated scheduling, When,
On the PDCCH of the first cell according to the first cooperative activation request, so that the cooperative terminal receives a control message on the PDCCH of the first cell according to the second cooperative activation request transmitted by the macro base station. The second cooperative activation request is for instructing the cooperative terminal to accept the cooperative scheduling performed by the first cell and the macro base station on the PDCCH. And the second cooperative activation request includes a step of including a physical cell identifier (PCI) of the first cell.

The present invention provides a non-transitory computer-readable recording medium, and when an instruction in the recording medium is executed by a processor of the cooperative scheduling apparatus, the apparatus can execute the cooperative scheduling method. The method is
Receiving a second cooperative activation request transmitted by the macro base station, the second cooperative activation request being made by the first cell and the macro base station on the PDCCH to the cooperative terminal; The first cell is determined when the macro base station determines that there is a terminal that needs to perform coordinated scheduling and can enter the coordinated state. The second cooperative activation request includes the PCI of the first cell, and
Receiving a control message transmitted by the small cell managing the first cell on the PDCCH of the first cell according to the second cooperative activation request.

The present invention provides a non-transitory computer-readable recording medium, and when an instruction in the recording medium is executed by a processor of the cooperative scheduling apparatus, the apparatus can execute the cooperative scheduling method. The method is
Determining a first cell that needs to be coordinated scheduling when determining that there are terminals that can enter the coordinated state; and
The step of transmitting the first cooperative activation request to the small cell managing the first cell so that the small cell transmits a control message on the PDCCH of the first cell according to the first cooperative activation request. The first cooperative activation request is used to instruct the first cell managed by the small cell to cooperate with the macro base station to cooperatively schedule the cooperative terminal on the PDCCH, and
In a step of sending a second cooperative activation request to a cooperative terminal that needs to be cooperatively scheduled so that the cooperative terminal receives a control message on the PDCCH of the first cell according to the second cooperative activation request. And the second cooperative activation request is used to instruct the cooperative terminal to accept the cooperative scheduling performed by the first cell and the macro base station on the PDCCH. The activation request includes the steps including the PCI of the first cell.

  In the embodiment of the present invention, both the control plane and the data plane of the cooperative terminal are processed on the small cell, which may fully utilize the PDCCH resource of the small cell and limit the PDCCH resource of the macro base station. Reduce the overall algorithm complexity of IPRAN in the network and improve the cooperative scheduling reliability. In the embodiment of the present invention, the PDCCH resource of the small cell is fully utilized without having to occupy the PDSCH resource, and the downlink network capacity is not affected. Also, there is no need to exchange PDCCH data during cooperation, and the cooperation algorithm complexity is reduced.

  The coordinated scheduling method provided in the embodiment of the present invention is another embodiment scenario, for example, a scenario in which PDCCH parameters are notified using MCE, and inter-frequency network formation is performed for macro base stations and small cells in HetNet. It should be noted that it can also be applied to scenarios where the PDCCH is shared by the cooperating cell when it is connected, or scenarios where the PBSCH is shared by the cooperating cell when the macro base stations cooperate with each other. For specific application processes, reference is made to the above-described embodiments, and details are not described in the embodiments of the present invention.

  For some related algorithms, such as pre-configured channel algorithms, or some channel definitions, such as PDCCH channels, according to the present invention, please refer to related protocols, eg 3rd Generation Partnership Project (abbreviated as 3rd Generation Partnership Project). 3GPP) See TS 36.211: Physical channels and modulation, 3GPP TS 36.212: Multiplexing and channel coding, or 3GPP TS 36.213: Physical layer procedures. I want to be. TS indicates that the file is a technical specification.

  As a result, according to the cooperative scheduling method, apparatus, and system provided in the embodiments of the present invention, in order to implement that the small cell allocates PDCCH resources to the cooperative terminal, the small cell performs the first cooperation. In accordance with the activation request, a control message may be sent on the PDCCH of the first cell managed by the small cell. Even when the macro base station's PDCCH resources are occupied, in order to ensure effective scheduling for cooperative terminals and to ensure the success rate of cooperative scheduling, thereby improving cooperative scheduling efficiency, The terminal can still receive the PDCCH resource allocated by the small cell.

  In the embodiment of the present invention, the cooperative terminal, the first cell, the first cooperative activation request, the second cooperative activation request, etc. are named to distinguish rather than impose restrictions. Should be understood.

  In the embodiment of the present invention, cooperative scheduling means that the macro base station and the small cell negotiate a scheduling solution for the same terminal (which is a cooperative terminal in the embodiment of the present invention). For example, in the embodiment of the present invention, the fact that the first cell managed by the small cell and the macro base station perform cooperative scheduling on the PDCCH means that the small cell uses the PDCCH of the first cell. Can send a control message to the cooperating terminal, the macro base station can send a control message to the cooperating terminal using the PDCCH of the macro base station, and the moment the control message is sent by the small cell and the macro base station in advance Means to be negotiated. When the first cell and the macro base station perform cooperative scheduling on the PDSCH, the small cell can transmit downlink data to the cooperative terminal using the PDSCH of the first cell, for example, the downlink. Data transmission message, macro base station can transmit downlink data to the cooperating terminal using the macro base station PDSCH, the moment of transmitting downlink data by the small cell and macro base station is negotiated in advance Means. When the first cell and the macro base station perform cooperative scheduling on the PUSCH, the small cell can transmit uplink data to the cooperative terminal using the PUSCH of the first cell, for example, uplink. Data transmission message, the macro base station can transmit uplink data to the cooperating terminal using the macro base station PUSCH, the moment of transmitting uplink data by the small cell and macro base station is negotiated in advance Means.

  It should be understood that in some embodiments provided herein, the disclosed systems, devices, and methods may be implemented in other ways. For example, the described apparatus embodiment is merely an example. For example, the unit division is merely a logical functional division, and may be another division in an actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not performed.

  For example, in the coordinated scheduling apparatus provided in the fourth aspect, the operations performed by the first receiving unit and the second receiving unit may be performed by one receiving unit, the first transmitting unit, The operations performed by the second transmission unit, the third transmission unit, and the fourth transmission unit may be performed by one transmission unit. In the cooperative scheduling apparatus provided in the fifth aspect, the operations executed by the first receiving unit and the second receiving unit may be executed by one receiving unit. In the cooperative scheduling apparatus provided in the sixth aspect, the operations executed by the first transmission unit and the second transmission unit may be executed by one transmission unit.

  It should be understood that the foregoing summary and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

  In order to describe the technical solutions in the embodiments of the present invention more clearly, the following briefly describes the accompanying drawings required for describing the embodiments. Of course, in the following description, the accompanying drawings show only some embodiments of the present invention, and those of ordinary skill in the art will appreciate that other drawings can be used without any ingenuity. Can be further derived.

FIG. 2 shows a schematic diagram of one implementation environment related to a cooperative scheduling method according to an embodiment of the present invention. FIG. 6 shows a schematic diagram of one implementation environment related to another cooperative scheduling method according to an embodiment of the present invention. Fig. 4 shows a flowchart of a cooperative scheduling method according to an embodiment of the present invention. Fig. 5 shows a flowchart of another cooperative scheduling method according to an embodiment of the present invention. 6 shows a flowchart of yet another cooperative scheduling method according to an embodiment of the present invention. 6 shows a flowchart of a cooperative scheduling method according to another embodiment of the present invention. 6 shows a flowchart of a cooperative scheduling method according to another embodiment of the present invention. According to an embodiment of the present invention, a method for receiving a control message transmitted by a small cell managing a first cell on a PDCCH of the first cell according to a second cooperative activation request by a cooperative terminal. The flowchart is shown. Fig. 6 shows a flowchart of another cooperative scheduling method according to another embodiment of the present invention. Fig. 6 shows a flowchart of another cooperative scheduling method according to another embodiment of the present invention. Fig. 6 shows a flowchart of yet another cooperative scheduling method according to another embodiment of the present invention. Fig. 6 shows a flowchart of yet another cooperative scheduling method according to another embodiment of the present invention. FIG. 2 shows a schematic structural diagram of a cooperative scheduling device according to an embodiment of the present invention. FIG. 6 shows a schematic structural diagram of another cooperative scheduling apparatus according to an embodiment of the present invention. The schematic structure figure of another cooperation scheduling device concerning one embodiment of the present invention is shown. The schematic structure figure of another cooperation scheduling device concerning one embodiment of the present invention is shown. FIG. 3 shows a schematic structural diagram of a cooperative scheduling device according to another embodiment of the present invention. FIG. 6 shows a schematic structural diagram of another cooperative scheduling apparatus according to another embodiment of the present invention. FIG. 6 shows a schematic structural diagram of still another cooperative scheduling device according to another embodiment of the present invention. FIG. 6 shows a schematic structural diagram of a second receiving unit according to another embodiment of the present invention. FIG. 6 shows a schematic structural diagram of still another cooperative scheduling device according to another embodiment of the present invention. FIG. 6 shows a schematic structural diagram of a cooperative scheduling device according to still another embodiment of the present invention. FIG. 6 shows a schematic structural diagram of another cooperative scheduling apparatus according to still another embodiment of the present invention. FIG. 6 shows a schematic structural diagram of still another cooperative scheduling device according to still another embodiment of the present invention. FIG. 6 shows a schematic structural diagram of still another cooperative scheduling device according to still another embodiment of the present invention.

  The above accompanying drawings illustrate specific embodiments of the present invention and a more detailed description is provided below. The accompanying drawings and text description are not intended to limit the scope of the present invention in any way, but are intended to explain the concepts of the present invention to those skilled in the art with reference to specific embodiments. doing.

  In order to clarify the objects, technical solutions, and advantages of the present invention, embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

  In communication services, spectrum resources and power resources are limited. However, different communication cells have different numbers of terminals (which can be considered as the number of users) and service volumes. The communication system cannot consider only some terminals, and it is necessary to appropriately allocate resources so that terminal users in the communication system can have normal good communication. This allocation method or policy is a scheduling algorithm or scheduling technique. The process of allocating resources to terminals using a scheduling algorithm or scheduling technique may be referred to as scheduling.

  FIG. 1-1 shows a schematic diagram of one implementation environment related to the cooperative scheduling method according to an embodiment of the present invention. The implementation environment can be LTE HetNet. The implementation environment includes a macro base station 110, at least one small cell 120, and at least one terminal 130. The macro base station 110 and at least one small cell 120 form a HetNet. Each small cell 120 manages at least one cell 1201. At least one terminal 130 includes a cooperative terminal 1301. The cooperative terminal 1301 is an object that needs to be cooperatively scheduled by the macro base station 110 and the small cell 120, and is determined by the macro base station 110 or the small cell 120.

  In the mounting environment shown in FIG. 1-1, network arrangement for the macro base station 110 and the small cell 120 is performed by intra frequency arrangement. That is, the macro base station 110 and the small cell 120 use the same transmission frequency channel number. The macro base station 110 and the small cell 120 perform cooperative scheduling of the cooperative terminal 1301 in order to improve network capacity and user experience. The terminal 130 may be a smartphone, a computer, a multimedia player, an electronic book reader, a wearable device, or the like.

  FIG. 1-2 shows a schematic diagram of one implementation environment related to another cooperative scheduling method according to an embodiment of the present invention. In this implementation environment, it is assumed that the macro base station 110 and the small cell 120 perform cooperative scheduling of the cooperative terminal 1301, and the macro base station 110 and the small cell 120 separately perform data communication with the cooperative terminal 1301 using a radio link. The macro base station 110 and the small cell 120 may perform data transmission with the core network device 140 using Ethernet.

  One embodiment of the present invention provides a cooperative scheduling method, which is applied to the small cell shown in FIG. 1-1 or FIG. 1-2. As shown in FIG. 2, the cooperative scheduling method includes:

  Step 201: Receive a first cooperative activation request sent by a macro base station, and the first cooperative activation request sends a cooperative terminal together with a macro base station to a first cell managed by a small cell. Used to instruct to co-schedule on the physical downlink control channel (PDCCH).

  Step 202: The first cell's according to the first cooperative activation request such that the cooperative terminal receives a control message on the PDCCH of the first cell according to the second cooperative activation request transmitted by the macro base station. Send control message on PDCCH.

  The second cooperative activation request is used to instruct the cooperative terminal to accept the cooperative scheduling performed by the first cell and the macro base station on the PDCCH. Includes the physical cell identifier (English: Physical Cell ID, PCI for short) of the first cell.

  As a result, according to the cooperative scheduling method provided in this embodiment of the present invention, in order to implement that the small cell allocates PDCCH resources to the cooperative terminal, the small cell follows the first cooperative activation request. The control message may be transmitted on the PDCCH of the first cell managed by the small cell. Even when the macro base station's PDCCH resources are occupied, in order to ensure effective scheduling for cooperative terminals and to ensure the success rate of cooperative scheduling, thereby improving cooperative scheduling efficiency, The terminal can still receive the PDCCH resource allocated by the small cell.

  One embodiment of the present invention provides a cooperative scheduling method, which is applied to the cooperative terminal shown in FIG. 1-1 or FIG. 1-2. As shown in FIG. 3, the cooperative scheduling method includes the following steps.

  Step 301: Receive a second cooperative activation request sent by a macro base station, and the second cooperative activation request is made to the cooperative terminal by the first cell and the macro base station on the PDCCH. The first cell is determined when the macro base station determines that there is a terminal that needs to perform cooperative scheduling and can enter the cooperative state. Cell.

  The second cooperative activation request includes the PCI of the first cell. The cell that needs to perform cooperative scheduling is determined for the cooperative terminal. That is, the macro base station determines a small cell for scheduling the cooperative terminal. A cooperative terminal is a terminal that can be determined by a macro base station or a small cell and can be cooperatively scheduled.

  Step 302: Receive a control message sent by a small cell managing the first cell on the PDCCH of the first cell according to the second cooperative activation request.

  As a result, according to the coordinated scheduling method provided in this embodiment of the present invention, in order to implement that the small cell allocates PDCCH resources to the coordinated terminal, the coordinated terminal transmits the first signal transmitted by the macro base station. According to the two cooperative activation requests, a control message transmitted by the small cell managing the first cell may be received on the PDCCH of the first cell. Even when the macro base station's PDCCH resources are occupied, in order to ensure effective scheduling for cooperative terminals and to ensure the success rate of cooperative scheduling, thereby improving cooperative scheduling efficiency, The terminal can still receive the PDCCH resource allocated by the small cell.

  One embodiment of the present invention provides a coordinated scheduling method, which is applied to the macro base station shown in FIG. 1-1 or FIG. 1-2. As shown in FIG. 4, the method includes the following steps.

  Step 401: When it is determined that there is a terminal that can enter the cooperative state, a first cell that needs to perform cooperative scheduling is determined.

  The cell that needs to perform cooperative scheduling is determined for the cooperative terminal. That is, the macro base station determines a small cell for scheduling the cooperative terminal. A cooperative terminal is a terminal that can be determined by a macro base station or a small cell and can be cooperatively scheduled.

  Step 402: Send a first cooperative activation request to the small cell managing the first cell so that the small cell sends a control message on the PDCCH of the first cell according to the first cooperative activation request However, the first cooperative activation request is used to instruct the first cell managed by the small cell to cooperate with the macro base station to cooperatively schedule the cooperative terminal on the PDCCH.

  Step 403: Send a second cooperative activation request to a cooperative terminal that needs to be cooperatively scheduled so that the cooperative terminal receives a control message on the PDCCH of the first cell according to the second cooperative activation request .

  The second cooperative activation request is used to instruct the cooperative terminal to accept the cooperative scheduling performed by the first cell and the macro base station on the PDCCH. Includes the PCI of the first cell.

  As a result, according to the coordinated scheduling method provided in this embodiment of the present invention, the second coordinated activity transmitted by the macro base station to implement that the small cell allocates PDCCH resources to the coordinated terminal. The macro base station receives the control message transmitted by the small cell that manages the first cell on the PDCCH of the first cell according to the activation request, so that the macro base station can manage the small cell that manages the first cell. A first cooperative activation request may be transmitted to the cell, and a second cooperative activation request may be transmitted to the cooperative terminal. Even when the macro base station's PDCCH resources are occupied, in order to ensure effective scheduling for cooperative terminals and to ensure the success rate of cooperative scheduling, thereby improving cooperative scheduling efficiency, The terminal can still receive the PDCCH resource allocated by the small cell.

  In actual application, in the coordinated scheduling process, assuming that the cell used for coordinated scheduling is the first cell managed by the small cell, the first cell and the macro base station PDCCH, physical downlink shared channel (English: Physical Downlink Shared Channel, abbreviated as PDSCH), and physical uplink shared channel (English: Physical Uplink Shared Channel, abbreviated as PUSCH) may be co-scheduled or first The cell and the macro base station can co-schedule the cooperating terminal on the PDCCH and PDSCH, or the first cell and the macro base station co-operate the cooperating terminal on the PDCCH and the physical uplink shared channel (PUSCH). Can be scheduled.

  In the first aspect, assuming that the first cell and the macro base station perform cooperative scheduling on the PDCCH, PDSCH, and PUSCH, one embodiment of the present invention provides a cooperative scheduling method. The method is applied to the mounting environment shown in FIG. 1-1 or FIG. 1-2. As shown in FIGS. 5-1A and 5-1B, the method includes the following steps.

  Step 501: After the first cell is activated, the small cell reports the cell configuration parameters of the first cell to the macro base station.

  In this embodiment of the invention, after any cell in HetNet is activated, the small cell managing the cell may send the cell's cell configuration parameters to the macro base station. In this embodiment of the invention, the first cell is only used as an example. See the first cell for the operation of any other cell.

  Usually, the cell configuration parameter may include PCI. PCI is a physical layer cell identifier number used to identify a cell. For example, in a long term evolution (Long Term Evolution, LTE for short) system, there are 504 PCIs ranging from 0 to 503.

  Step 502: When determining that there is a terminal that can enter the cooperative state, the macro base station determines a first cell that needs to perform cooperative scheduling.

  The macro base station may determine whether each terminal served by the macro base station can enter the cooperative state. When determining that there is a terminal that can enter the cooperative state, the macro base station uses the terminal that can enter the cooperative state as the cooperative terminal, and then the first cell needs to cooperatively schedule the cooperative terminal. To decide. The first cell is a cell managed by a small cell.

  It should be noted that the macro base station may determine whether each terminal served by the macro base station can enter the cooperative state according to a preset cooperative scheduling algorithm. The coordinated scheduling algorithm may be determined based on channel parameters measured by the terminal, for example, a dynamic point selection (English: Dynamic Point Selection, DPS for short) algorithm, also referred to as a cell dynamic point selection algorithm. Please refer to related technology for the concrete calculation process. Details are not described in this embodiment of the invention. Channel parameters are used to reflect current channel conditions. Optionally, the operation of determining whether each terminal being served by the macro base station can enter the cooperative state may be performed by the small cell. After determining the cooperative terminal, the small cell reports the cooperative terminal to the macro base station. This is not limited in this embodiment of the invention.

  Step 503: The macro base station generates a first cooperative activation request and a second cooperative activation request.

  In this embodiment of the invention, according to the state of each channel of the macro base station, eg, PDCCH, PDSCH, and PUSCH, the macro base station may determine the channels that need to be coordinated scheduled. For example, in this embodiment, the macro base station determines that the first cell of the small cell and the macro base station can perform coordinated scheduling on the PDCCH, PDSCH, and PUSCH according to the channel state of the macro base station. The PDCCH, PDSCH, and PUSCH all need to be cooperatively scheduled, and the first cooperative activation request is sent to the first cell, along with the macro base station, to the cooperative terminal in the PDCCH, PDSCH , And to instruct to co-schedule on PUSCH. Correspondingly, the second cooperative activation request is for instructing the cooperative terminal to accept the cooperative scheduling performed by the first cell and the macro base station on the PDCCH, PDSCH, and PUSCH. used.

  Step 504: The macro base station transmits a first cooperative activation request to a small cell that manages the first cell.

  The first cooperative activation request is used to instruct the first cell together with the macro base station to cooperatively schedule the cooperative terminal on the PDCCH, PDSCH, and PUSCH. The small cell may activate the cooperative function of the small cell according to the first cooperative activation request. The first cooperative activation request may include an identifier of the cooperative terminal.

  Step 505: The macro base station transmits a second cooperative activation request to the cooperative terminal that needs to be cooperatively scheduled.

  In step 501, the small cell reports the cell setting parameter of the first cell to the macro base station after the activation of the first cell, and the cell setting parameter includes the PCI of the first cell. In step 502, it is determined that the first cell can perform cooperative scheduling. Therefore, the macro base station acquires the PCI of the first cell from the cell setting parameters stored in advance, generates a second cooperative activation request that conveys the PCI, and sends the second cooperative activation request to the cooperative terminal. Send.

  In practical application, the second cooperative activation request may be conveyed in a radio resource control (RRC for short) message for transmission.

  Step 506: The small cell sends a control message on the PDCCH of the first cell according to the first cooperative activation request.

  First, the small cell activates the cooperative function of the small cell according to the first cooperative activation request. Since the first cooperative activation request is used to instruct the first cell to cooperate with the macro base station to perform cooperative scheduling on the PDCCH, PDSCH, and PUSCH, the small cell may use the PDCCH Resources may be allocated to the cooperative terminals. Thus, the small cell may send a control message on the PDCCH of the first cell according to the first cooperative activation request.

  Step 507: The cooperative terminal receives the control message transmitted by the small cell managing the first cell on the PDCCH of the first cell according to the second cooperative activation request.

  The second cooperative activation request is used to instruct the cooperative terminal to accept the cooperative scheduling performed by the first cell and the macro base station on the PDCCH, PDSCH, and PUSCH. This cooperative activation request includes the PCI of the first cell. Therefore, the cooperative terminal receives the second cooperative activation request transmitted by the macro base station, and then activates the cooperative scheduling function of the cooperative terminal. In this embodiment of the present invention, the cooperative terminal may comprise a cooperative scheduling module configured to perform a cooperative scheduling function. After receiving the second cooperative activation request, the cooperative scheduling module is enabled to activate the cooperative scheduling function.

  In order to establish a basis for integrating the control plane and the data plane, the macro base station can receive and analyze control messages transmitted using the PDCCH by the first cell, Using the two cooperative activation requests, the PCI of the first cell is notified to the cooperative terminal. The second cooperative activation request may be conveyed in a media access control (English: MAC Control Element, MCE) notification.

  In actual application, after receiving the control message, the cooperative terminal may return an activation confirmation message to the macro base station. After receiving the activation confirmation message, the macro base station determines that the cooperative terminal has activated the cooperative scheduling function. Then, in step 506, the operation of the control message transmission on the PDCCH of the first cell by the small cell is triggered. As a result, the transmission effectiveness of the control message can be ensured, and it is possible to avoid transmitting the control message when the cooperative terminal cannot be cooperatively scheduled.

  In this embodiment of the present invention, as shown in FIG. 5-2, the cooperative terminal transmits the control message transmitted by the small cell that manages the first cell to the first cell according to the second cooperative activation request. The process of receiving on the PDCCH may include the following steps.

  Step 5071: The cooperative terminal acquires the transmission frequency channel number of the small cell, the cell bandwidth of the first cell, and the number of PDCCH symbols of the first cell according to PCI.

  For example, since the macro base station and the small cell have the same transmission frequency channel number, the macro base station notifies the cooperation terminal of the transmission frequency channel number in order to set the transmission frequency channel number in the cooperation terminal. Therefore, information can be transmitted in advance to the cooperative terminal. Therefore, the cooperative terminal can acquire a preset transmission frequency channel number. Also, the cooperating terminal may measure the channel parameters of the current cell and the channel parameters of neighboring cells of the current cell in real time, and the channel parameters may include the cell bandwidth. Accordingly, the measured cell bandwidth of the cell corresponding to PCI (ie, the first cell) can be used as the cell bandwidth of the first cell. Further, the cooperative terminal is a cell corresponding to PCI as the number of PDCCH symbols of the first cell, and the physical control format indication channel (English: Physical) of the cell corresponding to PCI (that is, the first cell) Use the number of PDCCH symbols measured on the control format indicator channel (PCFICH).

  Step 5072: The cooperating terminal determines the PDCCH location of the first cell according to the transmission frequency channel number, the cell bandwidth, and the number of PDCCH symbols.

  The cooperative terminal may determine the PDCCH location according to the transmission frequency channel number, the cell bandwidth, and the number of PDCCH symbols based on a preset channel algorithm. For pre-configured channel algorithms, relevant protocols such as the 3rd Generation Partnership Project (3GPP for short) TS 36.211: Physical channels and modulation, 3GPP TS See 36.212: Multiplexing and channel coding, or 3GPP TS 36.213: Physical layer procedures. TS indicates that the file is a technical specification file.

  Step 5073: The cooperating terminal receives the control message transmitted by the small cell managing the first cell in the PDCCH location of the first cell.

  After returning the activation confirmation message to the macro base station, the cooperative terminal can blind detect the PDCCH of the first cell, and when detecting that the control message is mapped on the PDCCH of the first cell, Control messages can be obtained.

  It should be noted that prior to step 506, the small cell may generate a control message according to the first cooperative activation request, and the control message includes the identifier of the cooperative terminal. In step 506, the process by which the small cell sends the control message on the PDCCH of the first cell is actually the process of mapping the control message on the PDCCH of the first cell. The cooperative terminal may obtain a control message at the PDCCH location of the first cell according to the second cooperative activation request and may determine whether the control message conveys the identifier of the cooperative terminal. When the control message conveys the identifier of the cooperative terminal, the cooperative terminal determines that the control message is intended for the cooperative terminal, or when the control message does not convey the identifier of the cooperative terminal, the cooperative terminal May not be intended for the cooperative terminal, and the cooperative terminal may discard or delete the control message.

  Step 508: The cooperative terminal analyzes the control message.

  For the specific analysis process, see the relevant protocol, eg 3GPP TS 36.211, 3GPP TS 36.212, or 3GPP TS 36.213. Details are not described in this embodiment of the invention.

  Step 509: The small cell sends a downlink data message on the PDSCH of the first cell according to the first cooperative activation request.

  Since the first cooperative activation request is used to instruct the first cell to cooperate with the macro base station to perform cooperative scheduling on the PDCCH, PDSCH, and PUSCH, the small cell may use the PDSCH. Resources may be assigned to the first cooperative terminal. Thus, the small cell may send a downlink data message to the cooperative terminal on the PDSCH of the first cell.

  In this embodiment of the present invention, the small cell may allocate PDCCH resources to the cooperative terminals independently. The macro base station, in order to instruct the cooperating terminal to analyze the control message transmitted on the PDCCH of the first cell of the small cell, in order to ensure the integration of the control plane and the data plane. The cooperative function on the cooperative terminal is activated using the cooperative activation request of 1.

  Step 510: The cooperating terminal receives the downlink data message on the PDSCH of the first cell according to the control message and analyzes the downlink data message.

  In step 507, the cooperating terminal receives a control message, and the control message may carry relevant parameters (eg, parameters indicating the PDSCH location of the first cell) used to receive the downlink data message. . Therefore, the cooperative terminal receives the downlink data message on the PDSCH of the first cell according to the control message, and analyzes the downlink data message. For the specific process, see the relevant protocol, eg, 3GPP TS 36.211, 3GPP TS 36.212, or 3GPP TS 36.213. Details are not described in this embodiment of the invention.

  Step 511: The cooperative terminal transmits an uplink data message on the PUSCH of the first cell according to the control message.

  In step 503, the macro base station determines that the first cell of the small cell and the macro base station can perform cooperative scheduling on the PDCCH, PDSCH, and PUSCH. In step 507, the cooperating terminal receives the control message, and the control message may convey relevant parameters (eg, parameters indicating the PUSCH location of the first cell) used to send the uplink data message. . Thus, the cooperative terminal may transmit an uplink data message on the PUSCH of the first cell according to the control message.

  Step 512: The small cell receives the uplink data message transmitted by the cooperative terminal on the PUSCH of the first cell according to the first cooperative activation request, and analyzes the uplink data message.

  Step 513: The small cell determines whether the cooperative terminal can maintain the cooperative state.

  In step 512, the uplink data message may include channel parameters measured by the cooperating terminal, and the small cell determines whether the cooperating terminal can maintain the cooperating state according to a preconfigured cooperating scheduling algorithm. It should be noted that it can be determined. The cooperative scheduling algorithm may be determined based on channel parameters measured by the terminal, for example, a DPS algorithm also referred to as a cell dynamic point selection algorithm. Channel parameters measured by the terminal are conveyed in the uplink data message. Please refer to related technology for the concrete calculation process. Details are not described in this embodiment of the invention.

  In actual application, the small cell may report the channel parameters conveyed in the uplink data message to the macro base station, and the macro base station determines whether the cooperating terminal can maintain the coordinating state. judge. For the process by which the macro base station determines whether the cooperative terminal can maintain the cooperative state, refer to the related art. Details will not be described in the present invention.

  Step 514: When the cooperative terminal cannot maintain the cooperative state, the small cell transmits a first deactivation notification to the macro base station, and the first deactivation notification is coordinated scheduling to the macro base station. Used to instruct to stop.

  The macro base station may stop the cooperative scheduling after receiving the first deactivation notification.

  Step 515: The small cell sends a deactivation notification to the cooperative terminal, and the second deactivation notification is used to instruct the cooperative terminal to stop cooperative scheduling.

  After receiving the second deactivation notification, the cooperative terminal may disable the cooperative scheduling function of the cooperative terminal and stop the cooperative scheduling. In this embodiment of the present invention, the cooperative terminal may comprise a cooperative scheduling module configured to perform a cooperative scheduling function. After receiving the deactivation notification, the coordinated scheduling module is disabled to disable the coordinated scheduling function. In this case, similarly, handover occurs on the cooperative terminal, but the cooperative terminal does not recognize, and this does not affect the main performance evaluation index (English: Key Performance Indicator, KPI for short) of handover.

  As a result, according to the cooperative scheduling method provided in this embodiment of the present invention, in order to implement that the small cell allocates PDCCH resources to the cooperative terminal, the small cell follows the first cooperative activation request. The control message may be transmitted on the PDCCH of the first cell managed by the small cell. Even when the macro base station's PDCCH resources are occupied, in order to ensure effective scheduling for cooperative terminals and to ensure the success rate of cooperative scheduling, thereby improving cooperative scheduling efficiency, The terminal can still receive the PDCCH resource allocated by the small cell.

  In the second aspect, assuming that the first cell and the macro base station perform cooperative scheduling on the PDCCH and PDSCH, an embodiment of the present invention provides a cooperative scheduling method. The method is applied to the mounting environment shown in FIG. 1-1 or FIG. 1-2. As shown in FIGS. 6A and 6B, the method includes the following steps.

  Step 601: After the first cell is activated, the small cell reports the cell configuration parameters of the first cell to the macro base station.

  For step 601, refer to step 501. Details are not described in this embodiment of the invention.

  Step 602: When determining that there is a terminal that can enter the cooperative state, the macro base station determines a first cell that needs to perform cooperative scheduling.

  For step 602, see step 502. Details are not described in this embodiment of the invention.

  Step 603: The macro base station generates a first cooperative activation request and a second cooperative activation request.

  In this embodiment of the invention, according to the state of each channel of the macro base station, eg, PDCCH, PDSCH, and PUSCH, the macro base station may determine the channels that need to be coordinated scheduled. For example, in this embodiment, the macro base station determines that the first cell of the small cell and the macro base station can perform cooperative scheduling on the PDCCH and PDSCH according to the channel state of the macro base station. Assuming that both PDCCH and PDSCH need to be co-scheduled, and the first co-activation request co-schedules co-operating terminals on PDCCH and PDSCH with the macro base station in the first cell Used to direct. Correspondingly, the second cooperative activation request is used to instruct the cooperative terminal to accept the cooperative scheduling performed by the first cell and the macro base station on the PDCCH and PDSCH. .

  Step 604: The base station transmits a first cooperative activation request to a small cell that manages the first cell.

  The first cooperative activation request is used to instruct the first cell together with the macro base station to cooperatively schedule the cooperative terminal on the PDCCH and PDSCH. The small cell may activate the cooperative function of the small cell according to the first cooperative activation request. The first cooperative activation request may include an identifier of the cooperative terminal.

  Step 605: The macro base station sends a second cooperative activation request to the cooperative terminal that needs to be cooperatively scheduled.

  For step 605, refer to step 505. Details are not described in this embodiment of the invention.

  Step 606: The small cell transmits a control message on the PDCCH of the first cell according to the first cooperative activation request.

  First, the small cell activates the cooperative function of the small cell according to the first cooperative activation request. Since the first coordinated activation request is used to instruct the first cell to coordinate with the macro base station to coordinate the coordinated terminal on the PDCCH and PDSCH, the small cell coordinates the PDCCH resource. Can be assigned to a terminal. Thus, the small cell may send a control message on the PDCCH of the first cell according to the first cooperative activation request.

  Step 607: The cooperating terminal receives the control message transmitted by the small cell managing the first cell on the PDCCH of the first cell according to the second co-activation request.

  For step 607, refer to step 507. Details are not described in this embodiment of the invention.

  Step 608: The cooperative terminal analyzes the control message.

  For the specific analysis process, see the relevant protocol, eg 3GPP TS 36.211, 3GPP TS 36.212, or 3GPP TS 36.213. Details are not described in this embodiment of the invention.

  Step 609: The small cell transmits a downlink data message on the PDSCH of the first cell according to the first cooperative activation request.

  Since the first cooperative activation request is used to instruct the first cell to cooperate with the macro base station to perform cooperative scheduling on the PDCCH and the PDSCH, the small cell allocates PDSCH resources. It can be assigned to the first cooperative terminal. Thus, the small cell may send a downlink data message to the cooperative terminal on the PDSCH of the first cell.

  In this embodiment of the present invention, the small cell may allocate PDCCH resources to the cooperative terminals independently. Macro base station to instruct the cooperating terminal to analyze the control message transmitted on the PDCCH of the first cell of the small cell to ensure the integration of the downlink control plane and the data plane Activating the cooperative function on the cooperative terminal using the first cooperative activation request.

  Step 610: The cooperating terminal receives the downlink data message on the PDSCH of the first cell according to the control message, and analyzes the downlink data message.

  For step 610, see step 510. Details are not described in this embodiment of the invention.

  Step 611: The cooperating terminal sends an uplink data message on the PUSCH of the macro base station.

  In step 603, the macro base station determines that the first small cell and the macro base station can perform cooperative scheduling on the PDCCH and PDSCH, but cannot perform cooperative scheduling on the PUSCH. . Thus, the cooperative terminal may transmit an uplink data message on the macro base station PUSCH.

  Step 612: The macro base station receives the uplink data message transmitted by the cooperative terminal on the PUSCH of the macro base station, and analyzes the uplink data message.

  Step 613: The macro base station determines whether the cooperative terminal can maintain the cooperative state.

  In step 612, the uplink data message may include channel parameters measured by the cooperating terminal, and the macro base station determines whether the cooperating terminal can maintain the coordinating state according to a preset co-scheduling algorithm, It should be noted that can be determined. The cooperative scheduling algorithm may be determined based on channel parameters measured by the terminal, for example, a DPS algorithm also referred to as a cell dynamic point selection algorithm. Channel parameters measured by the terminal are conveyed in the uplink data message. Please refer to related technology for the concrete calculation process. Details are not described in this embodiment of the invention.

  Step 614: When the cooperative terminal cannot maintain the cooperative state, the macro base station transmits a deactivation request to the small cell and the cooperative terminal separately.

  When the cooperative terminal cannot maintain the cooperative state, the macro base station transmits a deactivation request to the small cell and the cooperative terminal separately, and the deactivation request instructs the small cell and the cooperative terminal to stop cooperative scheduling. Used to do. After receiving the deactivation request, the macro base station and the small cell disable their coordinated scheduling functions and stop coordinated scheduling. The deactivation request transmitted to the cooperative terminal includes the PCI of the first cell, and the deactivation request transmitted to the small cell includes the terminal identifier of the cooperative terminal. After receiving the deactivation notification, the cooperative terminal may disable the cooperative scheduling function of the cooperative terminal and stop the cooperative scheduling. In this embodiment of the present invention, the cooperative terminal may comprise a cooperative scheduling module configured to perform a cooperative scheduling function. After receiving the deactivation notification, the coordinated scheduling module is disabled to disable the coordinated scheduling function. In this case, similarly, handover occurs on the cooperative terminal, but the cooperative terminal is not recognized, and this does not affect the KPI.

  As a result, according to the cooperative scheduling method provided in this embodiment of the present invention, in order to implement that the small cell allocates PDCCH resources to the cooperative terminal, the small cell follows the first cooperative activation request. The control message may be transmitted on the PDCCH of the first cell managed by the small cell. Even when the macro base station's PDCCH resources are occupied, in order to ensure effective scheduling for cooperative terminals and to ensure the success rate of cooperative scheduling, thereby improving cooperative scheduling efficiency, The terminal can still receive the PDCCH resource allocated by the small cell.

  In the third aspect, assuming that the first cell and the macro base station perform cooperative scheduling on the PDCCH and PUSCH, one embodiment of the present invention provides a cooperative scheduling method. The method is applied to the mounting environment shown in FIG. 1-1 or FIG. 1-2. As shown in FIGS. 7A and 7B, the method includes the following steps.

  Step 701: After the first cell is activated, the small cell reports the cell configuration parameters of the first cell to the macro base station.

  For step 701, refer to step 501. Details are not described in this embodiment of the invention.

  Step 702: When determining that there is a terminal that can enter the cooperative state, the macro base station determines a first cell that needs to perform cooperative scheduling.

  For step 702, see step 502. Details are not described in this embodiment of the invention.

  Step 703: The macro base station generates a first cooperative activation request and a second cooperative activation request.

  In this embodiment of the invention, according to the state of each channel of the macro base station, eg, PDCCH, PDSCH, and PUSCH, the macro base station may determine the channels that need to be coordinated scheduled. For example, in this embodiment, the macro base station determines that the first cell of the small cell and the macro base station can perform cooperative scheduling on the PDCCH and PUSCH according to the channel state of the macro base station. Assuming that both PDCCH and PUSCH need to be co-scheduled, the first co-activation request co-schedules co-operating terminals on PDCCH and PUSCH to the first cell, along with the macro base station Used to direct. Correspondingly, the second cooperative activation request is used to instruct the cooperative terminal to accept the cooperative scheduling performed by the first cell and the macro base station on PDCCH and PUSCH. .

  Step 704: The macro base station transmits a first cooperative activation request to a small cell that manages the first cell.

  The first cooperative activation request is used to instruct the first cell together with the macro base station to cooperatively schedule the cooperative terminal on the PDCCH and PUSCH. The small cell may activate the cooperative function of the small cell according to the first cooperative activation request. The first cooperative activation request may include an identifier of the cooperative terminal.

  Step 705: The macro base station transmits a second cooperative activation request to the cooperative terminal that needs to be cooperatively scheduled.

  In step 501, the small cell reports the cell setting parameter of the first cell to the macro base station after the activation of the first cell, and the cell setting parameter includes the PCI of the first cell. In step 502, it is determined that the first cell can perform cooperative scheduling. Therefore, the macro base station acquires the PCI of the first cell from the cell setting parameters stored in advance, generates a second cooperative activation request that conveys the PCI, and sends the second cooperative activation request to the cooperative terminal. Send.

  In practical application, the second cooperative activation request may be conveyed in an RRC: Radio Resource Control (RRC for short) message for transmission.

  Step 706: The small cell transmits a control message on the PDCCH of the first cell according to the first cooperative activation request.

  First, the small cell activates the cooperative function of the small cell according to the first cooperative activation request. Since the first cooperative activation request is used to instruct the first cell to cooperate with the macro base station to cooperatively schedule the cooperative terminal on PDSCH and PUSCH, the small cell cooperates with the PDCCH resource. Can be assigned to a terminal. Thus, the small cell may send a control message on the PDCCH of the first cell according to the first cooperative activation request.

  Step 707: The cooperative terminal receives the control message transmitted by the small cell managing the first cell on the PDCCH of the first cell according to the second cooperative activation request.

  For step 707, refer to step 507. Details are not described in this embodiment of the invention.

  Step 708: The cooperative terminal analyzes the control message.

  For the specific analysis process, see the relevant protocol, eg 3GPP TS 36.211, 3GPP TS 36.212, or 3GPP TS 36.213. Details are not described in this embodiment of the invention.

  Step 709: The macro base station transmits a downlink data message to the cooperative terminal on the PDSCH of the macro base station.

  The cooperative activation request is used to instruct the first cell to cooperate with the macro base station to perform cooperative scheduling on the PDCCH and PUSCH, but cannot perform cooperative scheduling on the PDSCH. The macro base station may allocate PDCCH resources to the cooperative terminals. Thus, the macro base station may send a downlink data message to the cooperative terminal on the macro base station PDSCH.

  In this embodiment of the present invention, the small cell may allocate PDCCH resources to the cooperative terminals independently. The macro base station instructs the cooperating terminal to analyze the control message transmitted on the PDCCH of the first cell of the small cell to ensure the integration of the uplink control plane and the data plane. Activate the cooperation function on the cooperation terminal using the first cooperation activation request.

  Step 710: The cooperating terminal receives the downlink data message on the PDSCH of the macro base station and analyzes the downlink data message.

  Step 711: The cooperating terminal sends an uplink data message on the PUSCH of the first cell according to the control message.

  In step 703, the macro base station determines that the first cell of the small cell and the macro base station can perform cooperative scheduling on the PDCCH and the PUSCH. In step 707, the cooperating terminal receives a control message, and the control message may carry relevant parameters (eg, parameters indicating the PUSCH location of the first cell) used to send the uplink data message. . Thus, the cooperative terminal may transmit an uplink data message on the PUSCH of the first cell according to the control message.

  Step 712: The small cell receives the uplink data message transmitted by the cooperative terminal on the PUSCH of the first cell according to the first cooperative activation request, and analyzes the uplink data message.

  Step 713: The small cell determines whether the cooperative terminal can maintain the cooperative state.

  In step 712, the uplink data message may include channel parameters measured by the cooperating terminal, and the small cell determines whether the cooperating terminal can maintain the coordinating state according to a preconfigured cooperative scheduling algorithm. It should be noted that it can be determined. The cooperative scheduling algorithm may be determined based on channel parameters measured by the terminal, for example, a DPS algorithm also referred to as a cell dynamic point selection algorithm. Channel parameters measured by the terminal are conveyed in the uplink data message. Please refer to related technology for the concrete calculation process. Details are not described in this embodiment of the invention.

  Step 714: When the cooperative terminal cannot maintain the cooperative state, the small cell transmits a first deactivation notification to the macro base station, and the first deactivation notification is coordinated scheduling to the macro base station. Used to instruct to stop.

  The macro base station may stop the cooperative scheduling after receiving the first deactivation notification.

  Step 715: The small cell sends a second deactivation notification to the cooperative terminal, and the second deactivation notification is used to instruct the cooperative terminal to stop the cooperative scheduling.

  After receiving the second deactivation notification, the cooperative terminal may disable the cooperative scheduling function of the cooperative terminal and stop the cooperative scheduling. After receiving the second deactivation notification, the cooperative terminal may disable the cooperative scheduling function of the cooperative terminal and stop the cooperative scheduling. In this embodiment of the present invention, the cooperative terminal may comprise a cooperative scheduling module configured to perform a cooperative scheduling function. After receiving the deactivation notification, the coordinated scheduling module is disabled to disable the coordinated scheduling function. In this case, similarly, handover occurs on the cooperative terminal, but the cooperative terminal is not recognized, and this does not affect the KPI.

  As a result, according to the cooperative scheduling method provided in this embodiment of the present invention, in order to implement that the small cell allocates PDCCH resources to the cooperative terminal, the small cell follows the first cooperative activation request. The control message may be transmitted on the PDCCH of the first cell managed by the small cell. Even when the macro base station's PDCCH resources are occupied, in order to ensure effective scheduling for cooperative terminals and to ensure the success rate of cooperative scheduling, thereby improving cooperative scheduling efficiency, The terminal can still receive the PDCCH resource allocated by the small cell.

  In step 503, 603 or 703, in order to ensure the time consistency of the macro base station, the small cell, and the cooperative terminal, the first cooperative activation request generated by the macro base station has an agreed transmission time interval ( English: Transmission timing interval (abbreviated as TTI) identifier, and the second cooperative activation request also includes the agreed TTI identifier. When transmitting the first cooperative activation request and the second cooperative activation request to the small cell and the cooperative terminal, the macro base station causes the macro base station, the small cell, and the cooperative terminal to simultaneously enable the TTI function. TTI can be set. A small cell may distribute data on the PDCCH and PDSCH and receive data on the PUSCH at the TTI specified by the macro base station, and the cooperative terminal may transmit data on the PDCCH at the TTI specified by the macro base station. Is received, data is received on PDSCH, and data is transmitted on PUSCH.

For example, in 506, 606, or 706, the process in which a small cell sends a control message on the PDCCH of the first cell according to the first cooperative activation request is:
Transmitting a control message on the PDCCH of the first cell at the TTI indicated by the agreed TTI identifier.

For example, in 507, 607, or 707, a process in which a cooperative terminal receives a control message transmitted by a small cell managing a first cell on the PDCCH of the first cell according to a second cooperative activation request Is
Receiving a control message sent by a small cell managing the first cell on the PDCCH of the first cell at the TTI indicated by the agreed TTI identifier.

  The sequence of steps of the cooperative scheduling method provided in the embodiment of the present invention may be appropriately adjusted, and steps may be added or deleted according to conditions. Any variation readily conceivable by those skilled in the art within the technical scope disclosed in the present invention shall fall within the protection scope of the present invention. Details are not described herein.

  In related technology, HetNet uses the Internet Protocol Radio Access Network (IPRAN for short) (IPRAN is also referred to as IP-based transport network), for example, the network structure of Figure 1-2. When the network is formed, the small cell uses Ethernet to query the macro base station for PDCCH resources, and the Ethernet delay greatly affects the overall cooperative scheduling process. When the delay is relatively large, the PDCCH resource allocated by the macro base station cannot be immediately applied to the small cell, and this scheduling result is more complicated in the algorithm of the coordinated scheduling, more reliable in the coordinated scheduling. Resulting in increased possibility of wasting PDCCH resources.

  In the embodiment of the present invention, both the control plane and the data plane of the cooperative terminal are processed on the small cell, which may fully utilize the PDCCH resource of the small cell and limit the PDCCH resource of the macro base station. , Reduce the overall algorithm complexity of IPRAN during network formation, and improve cooperative scheduling reliability. In the embodiment of the present invention, the PDCCH resource of the small cell is fully utilized without having to occupy the PDSCH resource, and the downlink network capacity is not affected. Also, there is no need to exchange PDCCH data during cooperation, and the cooperation algorithm complexity is reduced.

  The coordinated scheduling method provided in the embodiment of the present invention is another embodiment scenario, for example, a scenario in which PDCCH parameters are notified using MCE, and inter-frequency network formation is performed for macro base stations and small cells in HetNet. It should be noted that it can also be applied to scenarios where the PDCCH is shared by the cooperating cell when it is connected, or scenarios where the PBSCH is shared by the cooperating cell when the macro base stations cooperate with each other. For specific application processes, reference is made to the above-described embodiments, and details are not described in the embodiments of the present invention.

One embodiment of the present invention provides a coordinated scheduling device 80, which is applied to a small cell. As shown in Figure 8-1, the device
A first receiving unit 801 configured to receive a first cooperative activation request transmitted by a macro base station, wherein the first cooperative activation request is a first managed by a small cell. A first receiving unit 801 that is used to instruct a cell together with the macro base station to coordinately schedule a coordinated terminal on a physical downlink control channel (PDCCH);
On the PDCCH of the first cell according to the first cooperative activation request, so that the cooperative terminal receives a control message on the PDCCH of the first cell according to the second cooperative activation request transmitted by the macro base station. A first transmission unit 802, configured to transmit a control message at a second terminal, wherein a second cooperative activation request is made to the cooperative terminal by the first cell and the macro base station on the PDCCH. And the second cooperative activation request comprises a first transmission unit 802, which includes a physical cell identifier (PCI) of the first cell.

  As a result, in the cooperative scheduling apparatus provided in this embodiment of the present invention, in order to implement that the small cell allocates the PDCCH resource to the cooperative terminal, the first transmitting unit receives the first received by the receiving unit. According to one cooperative activation request, a control message may be transmitted on the PDCCH of the first cell managed by the small cell. Even when the macro base station's PDCCH resources are occupied, in order to ensure effective scheduling for cooperative terminals and to ensure the success rate of cooperative scheduling, thereby improving cooperative scheduling efficiency, The terminal can still receive the PDCCH resource allocated by the small cell.

Optionally, the first cooperative activation request is used to instruct the first cell, along with the macro base station, to cooperatively schedule the cooperative terminal on the PDCCH and physical downlink shared channel (PDSCH). Or the first coordinated activation request to instruct the first cell, along with the macro base station, to coordinately schedule the coordinated terminal on the PDCCH, PDSCH, and physical uplink shared channel (PUSCH) used. The control message is used to instruct the first cell together with the macro base station to perform cooperative scheduling of the cooperative terminal on the PDSCH. As shown in FIG.
A first receiving unit 801 configured to receive a first cooperative activation request transmitted by a macro base station, wherein the first cooperative activation request is a first managed by a small cell. A first receiving unit 801 that is used to instruct a cell together with the macro base station to coordinately schedule a coordinated terminal on a physical downlink control channel (PDCCH);
On the PDCCH of the first cell according to the first cooperative activation request, so that the cooperative terminal receives a control message on the PDCCH of the first cell according to the second cooperative activation request transmitted by the macro base station. A first transmission unit 802, configured to transmit a control message at a second terminal, wherein a second cooperative activation request is made to the cooperative terminal by the first cell and the macro base station on the PDCCH. The first transmission unit 802, used to direct the received coordinated scheduling, and the second coordinate activation request includes a physical cell identifier (PCI) of the first cell;
Transmit the downlink data message to the cooperative terminal on the PDSCH of the first cell according to the first cooperative activation request so that the cooperative terminal receives the downlink data message on the PDSCH of the first cell according to the control message And a second transmission unit 803 configured to do this.

Optionally, the first cooperative activation request is used to instruct the first cell, along with the macro base station, to cooperatively schedule the cooperative terminal on the PDCCH and PUSCH, or the first cooperative activation request. The activation request is used to instruct the first cell together with the macro base station to perform cooperative scheduling on the PDCCH, PDSCH, and PUSCH. The control message is used to instruct the first cell together with the macro base station to perform cooperative scheduling of the cooperative terminal on the PUSCH. As shown in FIG.
A first receiving unit 801 configured to receive a first cooperative activation request transmitted by a macro base station, wherein the first cooperative activation request is a first managed by a small cell. A first receiving unit 801 that is used to instruct a cell together with the macro base station to coordinately schedule a coordinated terminal on a physical downlink control channel (PDCCH);
On the PDCCH of the first cell according to the first cooperative activation request, so that the cooperative terminal receives a control message on the PDCCH of the first cell according to the second cooperative activation request transmitted by the macro base station. A first transmission unit 802, configured to transmit a control message at a second terminal, wherein a second cooperative activation request is made to the cooperative terminal by the first cell and the macro base station on the PDCCH. The first transmission unit 802, used to direct the received coordinated scheduling, and the second coordinate activation request includes a physical cell identifier (PCI) of the first cell;
A second receiving unit 804 configured to receive an uplink data message sent by a cooperative terminal on a PUSCH of a first cell according to a first cooperative activation request, wherein the uplink data The message may comprise a second receiving unit 804 transmitted by the cooperative terminal according to the control message.

Optionally, as shown in FIG.
A first receiving unit 801 configured to receive a first cooperative activation request transmitted by a macro base station, wherein the first cooperative activation request is a first managed by a small cell. A first receiving unit 801 that is used to instruct a cell together with the macro base station to coordinately schedule a coordinated terminal on a physical downlink control channel (PDCCH);
On the PDCCH of the first cell according to the first cooperative activation request, so that the cooperative terminal receives a control message on the PDCCH of the first cell according to the second cooperative activation request transmitted by the macro base station. A first transmission unit 802, configured to transmit a control message at a second terminal, wherein a second cooperative activation request is made to the cooperative terminal by the first cell and the macro base station on the PDCCH. The first transmission unit 802, used to direct the received coordinated scheduling, and the second coordinate activation request includes a physical cell identifier (PCI) of the first cell;
A reporting unit 805 configured to report cell configuration parameters to the macro base station after the first cell is activated, the cell configuration parameters including a physical cell identifier (PCI), The station may comprise a reporting unit 805 that may generate a first activation request carrying the PCI according to cell configuration parameters.

Optionally, the first cooperative activation request includes an identifier of the cooperative terminal, and as shown in FIG.
A first receiving unit 801 configured to receive a first cooperative activation request transmitted by a macro base station, wherein the first cooperative activation request is a first managed by a small cell. A first receiving unit 801 that is used to instruct a cell together with the macro base station to coordinately schedule a coordinated terminal on a physical downlink control channel (PDCCH);
On the PDCCH of the first cell according to the first cooperative activation request, so that the cooperative terminal receives a control message on the PDCCH of the first cell according to the second cooperative activation request transmitted by the macro base station. A first transmission unit 802, configured to transmit a control message at a second terminal, wherein a second cooperative activation request is made to the cooperative terminal by the first cell and the macro base station on the PDCCH. The first transmission unit 802, used to direct the received coordinated scheduling, and the second coordinate activation request includes a physical cell identifier (PCI) of the first cell;
A generation unit 806 configured to generate a control message in accordance with the first cooperative activation request, the control message comprising a generation unit 806 including an identifier of the cooperative terminal.

Optionally, the uplink data message includes channel parameters measured by the coordinating terminal, and as shown in FIGS.
A first receiving unit 801 configured to receive a first cooperative activation request transmitted by a macro base station, wherein the first cooperative activation request is a first managed by a small cell. A first receiving unit 801 that is used to instruct a cell together with the macro base station to coordinately schedule a coordinated terminal on a physical downlink control channel (PDCCH);
On the PDCCH of the first cell according to the first cooperative activation request, so that the cooperative terminal receives a control message on the PDCCH of the first cell according to the second cooperative activation request transmitted by the macro base station. A first transmission unit 802, configured to transmit a control message at a second terminal, wherein a second cooperative activation request is made to the cooperative terminal by the first cell and the macro base station on the PDCCH. The first transmission unit 802, used to direct the received coordinated scheduling, and the second coordinate activation request includes a physical cell identifier (PCI) of the first cell;
A second receiving unit 804 configured to receive an uplink data message sent by a cooperative terminal on a PUSCH of a first cell according to a first cooperative activation request, wherein the uplink data A message is sent by the cooperative terminal according to the control message, a second receiving unit 804;
A determination unit 807 configured to determine whether the cooperative terminal can maintain the cooperative state according to the channel parameters;
A third transmission unit 808, configured to transmit a first deactivation notification to a macro base station when the cooperating terminal is unable to maintain a coordinating state, wherein the first deactivation notification A third transmission unit 808, used to instruct the macro base station to stop cooperative scheduling;
A fourth transmission unit 809 configured to send a deactivation notification to the cooperative terminal, the second deactivation notification for instructing the cooperative terminal to stop cooperative scheduling And a fourth transmission unit 809 used.

Optionally, the first cooperative activation request includes an agreed transmission time interval (TTI) identifier, and the first transmission unit 802 includes:
It is configured to transmit a control message on the PDCCH of the first cell in the TTI indicated by the agreed TTI identifier.

  As a result, in the cooperative scheduling apparatus provided in this embodiment of the present invention, in order to implement that the small cell allocates the PDCCH resource to the cooperative terminal, the first transmitting unit receives the first received by the receiving unit. According to one cooperative activation request, a control message may be transmitted on the PDCCH of the first cell managed by the small cell. Even when the macro base station's PDCCH resources are occupied, in order to ensure effective scheduling for cooperative terminals and to ensure the success rate of cooperative scheduling, thereby improving cooperative scheduling efficiency, The terminal can still receive the PDCCH resource allocated by the small cell.

The present invention provides a cooperative scheduling device 90, which is applied to a cooperative terminal. As shown in Figure 9-1, the method is
A first receiving unit 901 configured to receive a second cooperative activation request transmitted by a macro base station, wherein the second cooperative activation request is sent to the cooperative terminal on the PDCCH; Used to instruct to accept the coordinated scheduling performed by the first cell and the macro base station, the first cell needs to perform coordinated scheduling and there are terminals that can enter the coordinated state The first base unit 901, the second cooperative activation request includes the PCI of the first cell;
A second receiving unit 902 configured to receive a control message transmitted by the small cell managing the first cell on the PDCCH of the first cell according to the second cooperative activation request; Prepare.

  Optionally, the second coordinated activation request includes an agreed transmission time interval (TTI) identifier, and the second receiving unit 902 may receive the first cell's in the TTI indicated by the agreed TTI identifier. The PDCCH is configured to receive a control message transmitted by a small cell that manages the first cell.

  As a result, in the cooperative scheduling apparatus provided in this embodiment of the present invention, the second receiving unit receives the first receiving unit in order to implement that the small cell allocates PDCCH resources to the cooperative terminal. The control message transmitted by the small cell managing the first cell may be received on the PDCCH of the first cell according to the second coordinated activation request made. Even when the macro base station's PDCCH resources are occupied, in order to ensure effective scheduling for cooperative terminals and to ensure the success rate of cooperative scheduling, thereby improving cooperative scheduling efficiency, The terminal can still receive the PDCCH resource allocated by the small cell.

Optionally, as shown in FIG. 9-2, the second receiving unit 902
An acquisition subunit 9021 configured to acquire a transmission frequency channel number of the small cell, the cell bandwidth of the first cell, and the number of PDCCH symbols of the first cell according to PCI;
A determining subunit 9022 configured to determine a PDCCH location of the first cell according to a transmission frequency channel number, a cell bandwidth, and a number of PDCCH symbols;
A receiving subunit 9023 configured to receive a control message transmitted by a small cell managing the first cell at the PDCCH location of the first cell.

Acquisition subunit 9021
Get the preset transmission frequency channel number,
Use the measured cell bandwidth of the cell corresponding to PCI as the cell bandwidth of the first cell,
The number of PDCCH symbols of the first cell is that of a cell corresponding to PCI, and is configured to use the number of PDCCH symbols measured on the physical control format indication channel (PCFICH) of the cell corresponding to PCI. The

  As a result, in the cooperative scheduling apparatus provided in this embodiment of the present invention, the second receiving unit receives the first receiving unit in order to implement that the small cell allocates PDCCH resources to the cooperative terminal. The control message transmitted by the small cell managing the first cell may be received on the PDCCH of the first cell according to the second coordinated activation request made. Even when the macro base station's PDCCH resources are occupied, in order to ensure effective scheduling for cooperative terminals and to ensure the success rate of cooperative scheduling, thereby improving cooperative scheduling efficiency, The terminal can still receive the PDCCH resource allocated by the small cell.

One embodiment of the present invention provides a coordinated scheduling apparatus 01, which is applied to a macro base station. As shown in Figure 10-1, the device
A determination unit 011 configured to determine a first cell that needs to perform cooperative scheduling when determining that there is a terminal capable of entering the cooperative state;
Configured to send the first cooperative activation request to the small cell managing the first cell, so that the small cell sends a control message on the PDCCH of the first cell according to the first cooperative activation request The first transmission activation unit 012 is managed by the small cell so that the coordinated terminal is co-scheduled on the PDCCH with the macro base station in the first cell. A first transmission unit 012 used for indicating;
Send a second cooperative activation request to the cooperative terminals that need to be cooperatively scheduled so that the cooperative terminals receive control messages on the PDCCH of the first cell according to the second cooperative activation request The configured second transmission unit 013, wherein the second cooperative activation request is to allow the cooperative terminal to accept the cooperative scheduling performed by the first cell and the macro base station on the PDCCH The second cooperative activation request is used for indicating, and comprises a second transmission unit 013 including the PCI of the first cell.

  As a result, in the coordinated scheduling apparatus provided in this embodiment of the present invention, the small cell in which the coordinated base station manages the first cell in order to implement that the small cell allocates the PDCCH resource to the coordinated terminal. So that the first transmission unit can receive the first cell in accordance with the second coordinated activation request sent by the macro base station on the PDCCH of the first cell. The first cooperative activation request may be transmitted to the small cell to be managed, and the second transmission unit may transmit the second cooperative activation request to the cooperative terminal. Even when the macro base station's PDCCH resources are occupied, in order to ensure effective scheduling for cooperative terminals and to ensure the success rate of cooperative scheduling, thereby improving cooperative scheduling efficiency, The terminal can still receive the PDCCH resource allocated by the small cell.

Optionally, as shown in FIG.
A determination unit 011 configured to determine a first cell that needs to perform cooperative scheduling when determining that there is a terminal capable of entering the cooperative state;
Configured to send the first cooperative activation request to the small cell managing the first cell, so that the small cell sends a control message on the PDCCH of the first cell according to the first cooperative activation request The first transmission activation unit 012 is configured to coordinately schedule the cooperative terminal on the PDCCH together with the macro base station in the first cell managed by the small cell. A first transmission unit 012 used for indicating;
Send a second cooperative activation request to the cooperative terminals that need to be cooperatively scheduled so that the cooperative terminals receive control messages on the PDCCH of the first cell according to the second cooperative activation request The configured second transmission unit 013, wherein the second cooperative activation request is to allow the cooperative terminal to accept the cooperative scheduling performed by the first cell and the macro base station on the PDCCH The second cooperative activation request is used to direct the second transmission unit 013, which includes the PCI of the first cell;
A generation unit 014, configured to generate a first cooperative activation request when coordinated scheduling needs to be performed, wherein the first cooperative activation request is sent to a macro base in a first cell. Used together with the station to instruct the cooperative terminal to perform cooperative scheduling on the PDCCH and Physical Downlink Shared Channel (PDSCH), or the first cooperative activation request is sent to the first cell in the macro base Used with the station to instruct the cooperating terminal to co-schedule on the PDCCH and the physical uplink shared channel (PUSCH), or the first co-activation request is sent to the A generation unit 014 used to instruct the cooperative terminal to cooperate with the station for cooperative scheduling on the PDCCH, PDSCH, and PUSCH. The

  The first cooperative activation request includes an agreed transmission time interval (TTI) identifier, and the second cooperative activation request includes an agreed transmission time interval (TTI) identifier.

  As a result, in the coordinated scheduling apparatus provided in this embodiment of the present invention, the small cell in which the coordinated base station manages the first cell in order to implement that the small cell allocates the PDCCH resource to the coordinated terminal. So that the first transmission unit can receive the first cell in accordance with the second coordinated activation request sent by the macro base station on the PDCCH of the first cell. The first cooperative activation request may be transmitted to the small cell to be managed, and the second transmission unit may transmit the second cooperative activation request to the cooperative terminal. Even when the macro base station's PDCCH resources are occupied, in order to ensure effective scheduling for cooperative terminals and to ensure the success rate of cooperative scheduling, thereby improving cooperative scheduling efficiency, The terminal can still receive the PDCCH resource allocated by the small cell.

  One embodiment of the present invention provides a coordinated scheduling system, which may include a macro base station, a small cell, and a terminal. The small cell includes the cooperative scheduling apparatus 80 shown in any one of FIGS. 8-1 to 8-6. The terminal includes a cooperative scheduling device 90 shown in FIG. The macro base station includes the cooperative scheduling device 01 shown in FIG. 10-1 or FIG. 10-2.

  One embodiment of the present invention provides a coordinated scheduling device 02, which is applied to a small cell. As shown in FIG. 11, the apparatus includes a transmitter 021, a receiver 022, and a processor 023.

  The transmitter 021 is configured to receive the first cooperative activation request transmitted by the macro base station, and the first cooperative activation request is sent to the macro base station in the first cell managed by the small cell. And used to instruct the cooperating terminal to schedule on the physical downlink control channel (PDCCH).

  The receiver 022 follows the first cooperative activation request so that the cooperative terminal receives a control message on the PDCCH of the first cell according to the second cooperative activation request transmitted by the macro base station. Configured to send a control message on the PDCCH of the cell, and the second coordinated activation request allows the cooperating terminal to accept coordinated scheduling performed by the first cell and the macro base station on the PDCCH The second cooperative activation request includes the physical cell identifier (PCI) of the first cell.

Optionally, the first cooperative activation request is used to instruct the first cell, along with the macro base station, to cooperatively schedule the cooperative terminal on the PDCCH and physical downlink shared channel (PDSCH). Or the first coordinated activation request to instruct the first cell, along with the macro base station, to coordinately schedule the coordinated terminal on the PDCCH, PDSCH, and physical uplink shared channel (PUSCH) used. The control message is used to instruct the first cell together with the macro base station to perform cooperative scheduling of the cooperative terminal on the PDSCH. After receiving the first cooperative activation request sent by the macro base station,
Transmitter 021 downlinks to the cooperative terminal on the PDSCH of the first cell according to the first cooperative activation request so that the cooperative terminal receives the downlink data message on the PDSCH of the first cell according to the control message Further configured to send a data message.

  Optionally, the first cooperative activation request is used to instruct the first cell, along with the macro base station, to cooperatively schedule the cooperative terminal on the PDCCH and PUSCH, or the first cooperative activation request. The activation request is used to instruct the first cell together with the macro base station to perform cooperative scheduling on the PDCCH, PDSCH, and PUSCH. The control message is used to instruct the first cell together with the macro base station to perform cooperative scheduling of the cooperative terminal on the PUSCH. The receiver 022 is configured to receive an uplink data message transmitted by the cooperative terminal on the PUSCH of the first cell according to the first cooperative activation request, and the uplink data message is cooperative according to the control message Sent by the terminal.

  Optionally, the transmitter 021 is configured to report cell configuration parameters to the macro base station after the first cell is activated, the cell configuration parameters including a physical cell identifier (PCI).

  Optionally, the first cooperative activation request includes an identifier of the cooperative terminal, and the processor 023 is configured to generate a control message according to the first cooperative activation request, wherein the control message is the identifier of the cooperative terminal. including.

  Optionally, the uplink data message includes channel parameters measured by the cooperating terminal.

  The processor 023 is further configured to determine whether the cooperative terminal can maintain the cooperative state according to the channel parameter.

  The transmitter 021 is further configured to send a first deactivation notification to the macro base station when the cooperating terminal cannot maintain the coordinating state, and the first deactivation notification is sent to the macro base station. Used to instruct to stop cooperative scheduling.

  The transmitter 021 is further configured to send a deactivation notification to the cooperative terminal, and the second deactivation notification is used to instruct the cooperative terminal to stop cooperative scheduling.

  The first cooperative activation request includes an agreed transmission time interval (TTI) identifier, and transmitter 021 transmits a control message on the PDCCH of the first cell at the TTI indicated by the agreed TTI identifier. Configured to do.

  One embodiment of the present invention provides a cooperative scheduling device 03, which is applied to a cooperative terminal. As shown in FIG. 12, the apparatus includes a receiver 031, a transmitter 032, and a processor 033.

  The receiver 031 is configured to receive the second cooperative activation request transmitted by the macro base station, and the second cooperative activation request is sent to the cooperative terminal on the PDCCH, the first cell and the macro base Used to instruct to accept the coordinated scheduling performed by the station, the first cell needs to perform coordinated scheduling and the macro base station determines that there are terminals that can enter the coordinated state A cell that is sometimes determined, and the second cooperative activation request includes the PCI of the first cell.

  The receiver 031 is further configured to receive the control message transmitted by the small cell managing the first cell on the PDCCH of the first cell according to the second cooperative activation request.

  Optionally, the processor 033 is configured to obtain the transmission frequency channel number of the small cell, the cell bandwidth of the first cell, and the number of PDCCH symbols of the first cell according to PCI.

  The processor 033 is configured to determine the PDCCH location of the first cell according to the transmission frequency channel number, the cell bandwidth, and the number of PDCCH symbols.

  The receiver 031 is configured to receive a control message transmitted by the small cell that manages the first cell at the PDCCH location of the first cell.

Optionally, processor 033
Get the preset transmission frequency channel number,
Use the measured cell bandwidth of the cell corresponding to PCI as the cell bandwidth of the first cell,
The number of PDCCH symbols of the first cell is that of a cell corresponding to PCI, and is configured to use the number of PDCCH symbols measured on the physical control format indication channel (PCFICH) of the cell corresponding to PCI. The

  Optionally, the second cooperative activation request includes an agreed transmission time interval (TTI) identifier, and the receiver 031 is on the PDCCH of the first cell at the TTI indicated by the agreed TTI identifier, It is configured to receive a control message transmitted by a small cell that manages the first cell.

  One embodiment of the present invention provides a coordinated scheduling device 04, which is applied to a macro base station. As shown in FIG. 13, the apparatus includes a receiver 041, a transmitter 042, and a processor 043.

  The receiver 043 is configured to determine a first cell that needs to perform cooperative scheduling when determining that there is a terminal that can enter the cooperative state.

  The transmitter 042 sends a first cooperative activation request to the small cell that manages the first cell so that the small cell transmits a control message on the PDCCH of the first cell according to the first cooperative activation request. The first coordinated activation request is configured to transmit and is used to instruct the first cell managed by the small cell to coordinate with the macro base station to coordinately schedule the coordinated terminal on the PDCCH. The

  Transmitter 042 sends a second cooperative activation request to the cooperative terminal that needs to be coordinated so that the cooperative terminal receives a control message on the PDCCH of the first cell according to the second cooperative activation request The second cooperative activation request is configured to be used to instruct the cooperative terminal to accept the cooperative scheduling performed by the first cell and the macro base station on the PDCCH. The second cooperative activation request includes the PCI of the first cell.

Optionally, receiver 043
It is further configured to generate a first cooperative activation request when coordinated scheduling needs to be performed, and the first cooperative activation request, together with the macro base station, sends the cooperative terminal to the PDCCH in the first cell. And the first cooperative activation request is used to instruct to perform coordinated scheduling on the physical downlink shared channel (PDSCH) or the PDCCH with the macro base station in the first cell. And the first cooperative activation request is used to instruct to coordinately schedule on the physical uplink shared channel (PUSCH) or the PDCCH with the macro base station in the first cell , PDSCH, and PUSCH are used to instruct to perform cooperative scheduling.

  Optionally, the first cooperative activation request includes an agreed transmission time interval (TTI) identifier and the second cooperative activation request includes an agreed transmission time interval (TTI) identifier.

  In a tenth aspect, the present invention provides a coordinated scheduling system comprising a macro base station, a small cell, and a terminal.

  The small cell includes the cooperative scheduling apparatus shown in FIG.

  The terminal includes the cooperative scheduling apparatus shown in FIG.

  The macro base station includes the cooperative scheduling apparatus shown in FIG.

  For a convenient and concise description, those skilled in the art may refer to the corresponding processes in the foregoing method embodiments for detailed working processes of the aforementioned systems, devices, and units, details of which are described herein. It can be clearly understood that it is not described again in the document.

  It should be understood that in some embodiments provided herein, the disclosed systems, devices, and methods may be implemented in other ways. For example, the described apparatus embodiment is merely an example. For example, the unit division is merely a logical functional division, and may be another division in an actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not performed. Several interfaces may also be used to implement the mutual or direct coupling or communication connections that are displayed or discussed. Indirect coupling or communication connections between devices or units may be implemented by electronic, mechanical, or other forms.

  A unit described as a separate part may or may not be physically separate, and a part displayed as a unit may or may not be a physical unit; Or may be distributed over a plurality of network units. Some or all of the units may be selected according to the actual requirements that realize the purpose of the solution of the embodiment.

  In addition, the functional units in the embodiments of the present invention may be integrated into one processing unit, or each of the units may physically exist alone, or two or more units may be integrated into one unit. May be. The integrated unit may be implemented in the form of hardware or may be implemented in the form of hardware in addition to the software functional unit.

  One of ordinary skill in the art can appreciate that all or some of the steps of the embodiments may be performed by a program that instructs the hardware or related hardware. The program can be stored in a computer-readable recording medium. The recording medium may include a read only memory, a magnetic disk, or an optical disk.

  The foregoing descriptions are merely exemplary embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, and improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.

01 Cooperative scheduling device
02 Cooperative scheduling device
03 Cooperative scheduling device
04 Cooperative scheduling device
011 Decision unit
012 First transmission unit
013 Second transmission unit
014 generation unit
021 transmitter
022 receiver
023 processor
031 receiver
032 transmitter
033 processor
041 receiver
042 transmitter
043 processor
80 Cooperative scheduling device
90 Cooperative scheduling device
110 Macro base station
120 small cell
130 terminals
140 Core network equipment
801 First receiver unit
802 1st transmission unit
803 Second transmission unit
804 Second receiving unit
805 Reporting unit
806 generation unit
807 judgment unit
808 3rd transmission unit
809 4th transmission unit
901 First receiver unit
902 Second receiving unit
1201 cells
1301 Cooperation terminal
9021 Acquisition subunit
9022 Decision subunit
9023 Receive subunit

Optionally, the uplink data message includes channel parameters measured by the cooperating terminal, and after sending the control message on the PDCCH of the first cell according to the first co-activation request, the method comprises:
Determining whether the cooperating terminal can maintain the coordinating state according to the channel parameters;
A step of transmitting a first deactivation notification to a macro base station when the cooperating terminal cannot maintain a coordinating state, wherein the first deactivation notification stops coordinated scheduling in the macro base station; Used to instruct to step, and
Sending a second deactivation notification to the cooperative terminal, wherein the second deactivation notification is used to instruct the cooperative terminal to stop the cooperative scheduling, Including.

Optionally, the uplink data message includes channel parameters measured by the cooperating terminal, and the device
A determination unit configured to determine whether the cooperative terminal can maintain the cooperative state according to the channel parameters;
A third transmission unit configured to transmit a first deactivation notification to a macro base station when the cooperating terminal is unable to maintain a coordinating state, wherein the first deactivation notification is A third transmission unit used to instruct the macro base station to stop cooperative scheduling; and
A fourth transmission unit configured to transmit a second deactivation notification to the cooperative terminal, the second deactivation notification instructing the cooperative terminal to stop cooperative scheduling And a fourth transmission unit used for the purpose.

Optionally, the uplink data message includes channel parameters measured by the cooperating terminal,
The processor is further configured to determine whether the cooperating terminal can maintain the coordinating state according to the channel parameter;
The transmitter is further configured to send a first deactivation notification to the macro base station when the cooperating terminal cannot maintain the coordinating state, and the first deactivation notification is sent to the macro base station, Used to stop collaborative scheduling,
The transmitter is further configured to send a second deactivation notification to the cooperative terminal, and the second deactivation notification is used to instruct the cooperative terminal to stop cooperative scheduling;
The first cooperative activation request includes an agreed transmission time interval (TTI) identifier, and the transmitter transmits a control message on the PDCCH of the first cell at the TTI indicated by the agreed TTI identifier. Configured as follows.

As a result, according to the coordinated scheduling method provided in this embodiment of the present invention, the second coordinated activity transmitted by the macro base station to implement that the small cell allocates PDCCH resources to the coordinated terminal. The macro base station manages the first cell so that the cooperating terminal can receive a control message transmitted by the small cell managing the first cell on the PDCCH of the first cell according to the activation request The first cooperative activation request may be transmitted to the cooperative terminal, and the second cooperative activation request may be transmitted to the cooperative terminal. Even when the macro base station's PDCCH resources are occupied, in order to ensure effective scheduling for cooperative terminals and to ensure the success rate of cooperative scheduling, thereby improving cooperative scheduling efficiency, The terminal can still receive the PDCCH resource allocated by the small cell.

Since the first cooperative activation request is used to instruct the first cell to cooperate with the macro base station to perform cooperative scheduling on the PDCCH, PDSCH, and PUSCH, the small cell may use the PDSCH. It may allocate resources to the cooperative terminal. Thus, the small cell may send a downlink data message to the cooperative terminal on the PDSCH of the first cell.

Step 515: The small cell sends a second deactivation notification to the cooperative terminal, and the second deactivation notification is used to instruct the cooperative terminal to stop the cooperative scheduling.

After receiving the second deactivation notification, the cooperative terminal may disable the cooperative scheduling function of the cooperative terminal and stop the cooperative scheduling. In this embodiment of the present invention, the cooperative terminal may comprise a cooperative scheduling module configured to perform a cooperative scheduling function. After receiving the second deactivation notification, the coordinated scheduling module is disabled to disable the coordinated scheduling function. In this case, similarly, handover occurs on the cooperative terminal, but the cooperative terminal does not recognize, and this does not affect the main performance evaluation index (English: Key Performance Indicator, KPI for short) of handover.

Step 604: The macro base station transmits a first cooperative activation request to a small cell that manages the first cell.

When the cooperative terminal cannot maintain the cooperative state, the macro base station transmits a deactivation request to the small cell and the cooperative terminal separately, and the deactivation request instructs the small cell and the cooperative terminal to stop cooperative scheduling. Used to do. After receiving the deactivation request, the cooperative terminal and the small cell disable their cooperative scheduling function and stop the cooperative scheduling. The deactivation request transmitted to the cooperative terminal includes the PCI of the first cell, and the deactivation request transmitted to the small cell includes the terminal identifier of the cooperative terminal. After receiving the deactivation notification, the cooperative terminal may disable the cooperative scheduling function of the cooperative terminal and stop the cooperative scheduling. In this embodiment of the present invention, the cooperative terminal may comprise a cooperative scheduling module configured to perform a cooperative scheduling function. After receiving the deactivation notification, the coordinated scheduling module is disabled to disable the coordinated scheduling function. In this case, similarly, handover occurs on the cooperative terminal, but the cooperative terminal is not recognized, and this does not affect the KPI.

In Step 7 01, small cell, after the first cell is activated, have reported cell configuration parameters of the first cell to the macro base station, the cell setting parameters, the PCI of the first cell include and is, in step 7 02, the first cell is determined that it is possible to perform cooperative scheduling. Therefore, the macro base station acquires the PCI of the first cell from the cell setting parameters stored in advance, generates a second cooperative activation request that conveys the PCI, and sends the second cooperative activation request to the cooperative terminal. Send.

In practical applications, the second coordinated activation request, no line resource control for the transmission (English: Radio Resource Control, abbreviated RRC) may be carried in the message.

After receiving the second deactivation notification, the cooperative terminal may disable the cooperative scheduling function of the cooperative terminal and stop the cooperative scheduling . In this embodiment of the present invention, the cooperative terminal may comprise a cooperative scheduling module configured to perform a cooperative scheduling function. After receiving the deactivation notification, the coordinated scheduling module is disabled to disable the coordinated scheduling function. In this case, similarly, handover occurs on the cooperative terminal, but the cooperative terminal is not recognized, and this does not affect the KPI.

Optionally, the uplink data message includes channel parameters measured by the coordinating terminal, and as shown in FIGS.
A first receiving unit 801 configured to receive a first cooperative activation request transmitted by a macro base station, wherein the first cooperative activation request is a first managed by a small cell. A first receiving unit 801 that is used to instruct a cell together with the macro base station to coordinately schedule a coordinated terminal on a physical downlink control channel (PDCCH);
On the PDCCH of the first cell according to the first cooperative activation request, so that the cooperative terminal receives a control message on the PDCCH of the first cell according to the second cooperative activation request transmitted by the macro base station. A first transmission unit 802, configured to transmit a control message at a second terminal, wherein a second cooperative activation request is made to the cooperative terminal by the first cell and the macro base station on the PDCCH. The first transmission unit 802, used to direct the received coordinated scheduling, and the second coordinate activation request includes a physical cell identifier (PCI) of the first cell;
A second receiving unit 804 configured to receive an uplink data message sent by a cooperative terminal on a PUSCH of a first cell according to a first cooperative activation request, wherein the uplink data A message is sent by the cooperative terminal according to the control message, a second receiving unit 804;
A determination unit 807 configured to determine whether the cooperative terminal can maintain the cooperative state according to the channel parameters;
A third transmission unit 808, configured to transmit a first deactivation notification to a macro base station when the cooperating terminal is unable to maintain a coordinating state, wherein the first deactivation notification A third transmission unit 808, used to instruct the macro base station to stop cooperative scheduling;
A fourth transmission unit 809 configured to transmit a second deactivation notification to the cooperative terminal, the second deactivation notification instructing the cooperative terminal to stop cooperative scheduling And a fourth transmission unit 809 used to

The transmitter 021 is further configured to send a second deactivation notification to the cooperative terminal, and the second deactivation notification is used to instruct the cooperative terminal to stop cooperative scheduling.

The processor 043 is configured to determine a first cell that needs to perform cooperative scheduling when determining that there is a terminal that can enter the cooperative state.

Optionally, processor 043 is
It is further configured to generate a first cooperative activation request when coordinated scheduling needs to be performed, and the first cooperative activation request, together with the macro base station, sends the cooperative terminal to the PDCCH in the first cell. And the first cooperative activation request is used to instruct to perform coordinated scheduling on the physical downlink shared channel (PDSCH) or the PDCCH with the macro base station in the first cell. And the first cooperative activation request is used to instruct to coordinately schedule on the physical uplink shared channel (PUSCH) or the PDCCH with the macro base station in the first cell , PDSCH, and PUSCH are used to instruct to perform cooperative scheduling.

In a fourth aspect, the present invention provides a coordinated scheduling system comprising a macro base station, a small cell, and a terminal.

Claims (29)

A cooperative scheduling method, wherein the method is applied to a small cell;
Receiving a first cooperative activation request transmitted by a macro base station, wherein the first cooperative activation request is transmitted to the first cell managed by the small cell together with the macro base station; Used to instruct a cooperative terminal to perform cooperative scheduling on a physical downlink control channel (PDCCH), which can be determined by the macro base station or the small cell and can be cooperatively scheduled Is a simple terminal, step,
According to the first cooperative activation request, the first cooperative activation request so that the cooperative terminal receives a control message on the PDCCH of the first cell according to a second cooperative activation request transmitted by the macro base station. Transmitting the control message on the PDCCH of the cell, wherein the second cooperative activation request is sent to the cooperative terminal by the first cell and the macro base station on the PDCCH. And the second coordinated activation request includes a physical cell identifier (PCI) of the first cell. The method is used to indicate acceptance of the coordinated scheduling performed. The first cooperative activation request is used to instruct the first cell, together with the macro base station, to cooperatively schedule the cooperative terminal on the PDCCH and physical downlink shared channel (PDSCH). Or the first cooperative activation request is sent to the first cell, together with the macro base station, to coordinate the cooperative terminal on the PDCCH, PDSCH, and physical uplink shared channel (PUSCH). The control message is used to instruct the first cell to co-schedule the cooperating terminal on the PDSCH with the macro base station;
After the step of receiving the first cooperative activation request sent by the macro base station, the method comprises:
The cooperative terminal on the PDSCH of the first cell according to the first cooperative activation request, such that the cooperative terminal receives a downlink data message on the PDSCH of the first cell according to the control message. The method of claim 1, further comprising: transmitting the downlink data message to: The first cooperative activation request is used to instruct the first cell, together with the macro base station, to cooperatively schedule the cooperative terminal on the PDCCH and PUSCH, or the first cell 1 cooperative activation request is used to instruct the first cell to cooperate with the macro base station to coordinately schedule the cooperative terminal on the PDCCH, PDSCH, and PUSCH, and the control message is Used to instruct the first cell, together with the macro base station, to cooperatively schedule the cooperative terminal on the PUSCH;
After the step of transmitting the control message on the PDCCH of the first cell, the method comprises:
Receiving an uplink data message transmitted by the cooperative terminal on the PUSCH of the first cell according to the first cooperative activation request, wherein the uplink data message is according to the control message; The method of claim 1, further comprising: transmitted by the cooperative terminal. Prior to the step of receiving a first cooperative activation request sent by a macro base station, the method comprises:
Reporting the cell configuration parameter to the macro base station after the first cell is activated, the cell configuration parameter further including the physical cell identifier (PCI); The method according to any one of claims 1 to 3. The first cooperative activation request includes an identifier of the cooperative terminal, and before the step of transmitting the control message on the PDCCH of the first cell according to the first cooperative activation request, The method
The method according to claim 1, further comprising: generating the control message according to the first cooperative activation request, wherein the control message includes the identifier of the cooperative terminal. The uplink data message includes channel parameters measured by the cooperative terminal, and after the step of transmitting the control message on the PDCCH of the first cell according to the first cooperative activation request, The method
Determining whether the cooperative terminal can maintain a cooperative state according to the channel parameters;
A step of transmitting a first deactivation notification to the macro base station when the cooperating terminal cannot maintain the cooperating state, the first deactivation notification being transmitted to the macro base station; Used to instruct to stop cooperative scheduling, and
Transmitting a deactivation notification to the cooperative terminal, wherein the second deactivation notification is used to instruct the cooperative terminal to stop cooperative scheduling; and 4. The method of claim 3, comprising. The first cooperative activation request includes an agreed transmission time interval (TTI) identifier;
The step of transmitting the control message on the PDCCH of the first cell according to the first cooperative activation request,
The method according to any one of claims 1 to 6, comprising transmitting the control message on the PDCCH of the first cell at a TTI indicated by the agreed TTI identifier. A coordinated scheduling method, wherein the method is applied to a coordinated terminal, and the coordinated terminal is a terminal that can be determined and coordinated by a macro base station or a small cell, and the method includes:
Receiving a second cooperative activation request transmitted by the macro base station, wherein the second cooperative activation request is sent to the cooperative terminal on the PDCCH with the first cell and the macro. Used to instruct to accept coordinated scheduling performed by a base station, the first cell needs to perform coordinated scheduling, and if there is a terminal that can enter the coordinated state, the macro base station The second cooperative activation request includes the PCI of the first cell,
Receiving a control message transmitted by a small cell managing the first cell on the PDCCH of the first cell according to the second cooperative activation request. Receiving the control message transmitted by the small cell managing the first cell on the PDCCH of the first cell according to the second cooperative activation request;
According to the PCI, obtaining the transmission frequency channel number of the small cell, the cell bandwidth of the first cell, and the number of PDCCH symbols of the first cell;
Determining a PDCCH location of the first cell according to the transmission frequency channel number, the cell bandwidth, and the number of PDCCH symbols;
Receiving the control message transmitted by the small cell managing the first cell at the PDCCH location of the first cell. According to the PCI, the step of obtaining the transmission frequency channel number of the small cell, the cell bandwidth of the first cell, and the number of PDCCH symbols of the first cell,
Obtaining a preset transmission frequency channel number;
Using the measured cell bandwidth of the cell corresponding to the PCI as the cell bandwidth of the first cell;
The PDCCH symbol number of the first cell is that of the cell corresponding to the PCI, and the number of PDCCH symbols measured on the physical control format indication channel (PCFICH) of the cell corresponding to the PCI. 10. The method of claim 9, comprising the step of using. The second cooperative activation request includes an agreed transmission time interval (TTI) identifier;
Receiving the control message transmitted by the small cell managing the first cell on the PDCCH of the first cell according to the second cooperative activation request;
Receiving the control message sent by the small cell managing the first cell on the PDCCH of the first cell at the TTI indicated by the agreed TTI identifier. Item 11. The method according to any one of Items 1 to 10. A coordinated scheduling method, wherein the method is applied to a macro base station;
When it is determined that there is a terminal that can enter the cooperative state, determining a first cell that needs to perform cooperative scheduling;
The first cooperative activation request is transmitted to the small cell that manages the first cell so that the small cell transmits a control message on the PDCCH of the first cell according to the first cooperative activation request. The first cooperative activation request is for instructing the first cell managed by the small cell to perform cooperative scheduling on the PDCCH together with the macro base station on the PDCCH. The cooperative terminal is a terminal that can be determined by the macro base station or the small cell and can be cooperatively scheduled, and
The second cooperative activation request needs to be cooperatively scheduled so that the cooperative terminal receives the control message on the PDCCH of the first cell according to a second cooperative activation request. The second cooperative activation request directs the cooperative terminal to accept the cooperative scheduling performed by the first cell and the macro base station on the PDCCH. And wherein the second cooperative activation request includes a PCI of the first cell. Prior to the step of sending the first cooperative activation request to the small cell that manages the first cell, the method comprises:
When coordinated scheduling needs to be performed, the step of generating the first coordinated activation request, the first coordinated activation request, together with the macro base station, in the first cell, Used to instruct a cooperative terminal to perform cooperative scheduling on the PDCCH and a physical downlink shared channel (PDSCH), or the first cooperative activation request is sent to the first cell in the macro Used with a base station to instruct the cooperating terminal to co-schedule on the PDCCH and Physical Uplink Shared Channel (PUSCH), or the first co-activation request is the first co-activation request The cell is instructed to perform cooperative scheduling on the PDCCH, PDSCH, and PUSCH together with the macro base station. Is used, further comprising the step, A method according to claim 12.   13. The first cooperative activation request includes an agreed transmission time interval (TTI) identifier, and the second cooperative activation request includes the agreed transmission time interval (TTI) identifier. Or the method of 13. Coordinated scheduling device, wherein the device is applied to a small cell,
A first receiving unit configured to receive a first cooperative activation request transmitted by a macro base station, wherein the first cooperative activation request is managed by the small cell. Used to instruct one cell with the macro base station to coordinately schedule a coordinated terminal on a physical downlink control channel (PDCCH), the coordinated terminal being used by the macro base station or the small cell A first receiving unit that is a terminal capable of being determined and co-scheduled;
According to the first cooperative activation request, the first cooperative activation request so that the cooperative terminal receives a control message on the PDCCH of the first cell according to a second cooperative activation request transmitted by the macro base station. A first transmission unit configured to transmit the control message on the PDCCH of the cell, wherein the second cooperative activation request is sent to the cooperative terminal on the PDCCH. Used to instruct to accept cooperative scheduling performed by one cell and the macro base station, the second cooperative activation request includes a physical cell identifier (PCI) of the first cell A device comprising: a first transmission unit. The first cooperative activation request is used to instruct the first cell, together with the macro base station, to cooperatively schedule the cooperative terminal on the PDCCH and physical downlink shared channel (PDSCH). Or the first cooperative activation request is sent to the first cell, together with the macro base station, to coordinate the cooperative terminal on the PDCCH, PDSCH, and physical uplink shared channel (PUSCH). The control message is used to instruct the first cell, together with the macro base station, to co-schedule the cooperating terminal on the PDSCH, the device Is
The cooperative terminal on the PDSCH of the first cell according to the first cooperative activation request, such that the cooperative terminal receives a downlink data message on the PDSCH of the first cell according to the control message. 16. The apparatus of claim 15, further comprising: a second transmission unit configured to transmit the downlink data message to The first cooperative activation request is used to instruct the first cell, together with the macro base station, to cooperatively schedule the cooperative terminal on the PDCCH and PUSCH, or the first cell 1 cooperative activation request is used to instruct the first cell to cooperate with the macro base station to coordinately schedule the cooperative terminal on the PDCCH, PDSCH, and PUSCH, and the control message is , Used to instruct the first cell, together with the macro base station, to cooperatively schedule the cooperative terminal on the PUSCH,
A second receiving unit configured to receive an uplink data message transmitted by the cooperative terminal on the PUSCH of the first cell according to the first cooperative activation request, 16. The apparatus of claim 15, further comprising a second receiving unit, wherein an uplink data message is transmitted by the cooperative terminal according to the control message. The device is
A reporting unit configured to report the cell configuration parameter to the macro base station after the first cell is activated, the cell configuration parameter comprising the physical cell identifier (PCI) The apparatus according to claim 15, further comprising a reporting unit. The first cooperative activation request includes an identifier of the cooperative terminal, and the device
The generating unit configured to generate the control message according to the first cooperative activation request, the control message further comprising a generating unit comprising the identifier of the cooperative terminal. 15. The device according to 15. The uplink data message includes channel parameters measured by the cooperating terminal, and the device
A determination unit configured to determine whether the cooperative terminal can maintain a cooperative state according to the channel parameter;
A third transmission unit configured to transmit a first deactivation notification to the macro base station when the cooperating terminal is unable to maintain the cooperating state; The activation notification is used to instruct the macro base station to stop cooperative scheduling, and a third transmission unit,
A fourth transmission unit configured to transmit a deactivation notification to the cooperative terminal, wherein the second deactivation notification instructs the cooperative terminal to stop cooperative scheduling 18. The apparatus of claim 17, further comprising: a fourth transmission unit used for: The first cooperative activation request includes an agreed transmission time interval (TTI) identifier, and the first transmission unit includes:
21. The apparatus according to any one of claims 15 to 20, configured to transmit the control message on the PDCCH of the first cell at a TTI indicated by the agreed TTI identifier. A cooperative scheduling apparatus, wherein the apparatus is applied to a cooperative terminal, and the cooperative terminal is a terminal that can be determined by a macro base station or a small cell and can be cooperatively scheduled.
A first receiving unit configured to receive a second cooperative activation request transmitted by the macro base station, wherein the second cooperative activation request is sent to the cooperative terminal on the PDCCH. Used to instruct to accept coordinated scheduling performed by the first cell and the macro base station, the first cell needs to perform coordinated scheduling and enters a coordinated state. A cell that is determined when the macro base station determines that there is a terminal capable of receiving the second cooperative activation request, the first receiving unit including the PCI of the first cell;
A second receiving unit configured to receive, on the PDCCH of the first cell, a control message transmitted by a small cell managing the first cell according to the second cooperative activation request A device comprising: The second receiving unit is
An acquisition subunit configured to acquire a transmission frequency channel number of the small cell, a cell bandwidth of the first cell, and a number of PDCCH symbols of the first cell according to the PCI;
A determination subunit configured to determine a PDCCH location of the first cell according to the transmission frequency channel number, the cell bandwidth, and the number of PDCCH symbols;
The receiving subunit configured to receive the control message transmitted by the small cell managing the first cell at the PDCCH location of the first cell. Equipment. The acquisition subunit is:
Get the preset transmission frequency channel number,
Using the measured cell bandwidth of the cell corresponding to the PCI as the cell bandwidth of the first cell,
The number of PDCCH symbols of the first cell is that of the cell corresponding to the PCI and measured on the physical control format indication channel (PCFICH) of the cell corresponding to the PCI. 24. The apparatus of claim 23, configured for use. The second cooperative activation request includes an agreed transmission time interval (TTI) identifier, and the second receiving unit includes:
Configured to receive the control message transmitted by the small cell managing the first cell on the PDCCH of the first cell at the TTI indicated by the agreed TTI identifier. 25. A device according to any one of claims 22 to 24. A co-scheduling device, wherein the device is applied to a macro base station;
A determination unit configured to determine a first cell that needs to perform cooperative scheduling when determining that there is a terminal capable of entering the cooperative state;
The first cooperative activation request is transmitted to the small cell that manages the first cell so that the small cell transmits a control message on the PDCCH of the first cell according to the first cooperative activation request. A first transmission unit configured to: the first cooperative activation request is sent to the first cell managed by the small cell, together with the macro base station, the PDCCH A first transmission unit used to instruct to coordinately schedule up, wherein the cooperative terminal is a terminal determined by the macro base station or the small cell and capable of cooperative scheduling;
The second cooperative activation request needs to be cooperatively scheduled so that the cooperative terminal receives the control message on the PDCCH of the first cell according to a second cooperative activation request. A second transmission unit configured to transmit to the cooperative terminal by the first cell and the macro base station on the PDCCH. A second transmission unit used to instruct to accept the coordinated scheduling performed, wherein the second coordinate activation request comprises a PCI of the first cell. The device is
A generation unit configured to generate the first cooperative activation request when cooperative scheduling needs to be performed, wherein the first cooperative activation request is sent to the first cell, Used together with the macro base station to instruct the cooperative terminal to perform cooperative scheduling on the PDCCH and physical downlink shared channel (PDSCH), or the first cooperative activation request is the first Used to instruct one cell to co-schedule the cooperating terminal on the PDCCH and physical uplink shared channel (PUSCH) with the macro base station, or the first co-activation The request is sent to the first cell, along with the macro base station, the cooperative terminal on the PDCCH, PDSCH, and PUSCH. It is used to indicate to, further comprising: a generation unit, according to claim 26.   27. The first cooperative activation request includes an agreed transmission time interval (TTI) identifier, and the second cooperative activation request includes the agreed transmission time interval (TTI) identifier. Or the apparatus according to 27. A collaborative scheduling system,
A macro base station, a small cell, and a cooperative terminal,
The small cell includes the coordinated scheduling device according to any one of claims 15 to 21,
The cooperative terminal includes the cooperative scheduling device according to any one of claims 22 to 25,
The macro base station includes the coordinated scheduling device according to any one of claims 26 to 28,
system.