WO2019051796A1

WO2019051796A1 - Channel demodulation method and related device

Info

Publication number: WO2019051796A1
Application number: PCT/CN2017/101930
Authority: WO
Inventors: 高东培; 罗亚军; 杨春磊; 朱永升; 张志强
Original assignee: 华为技术有限公司
Priority date: 2017-09-15
Filing date: 2017-09-15
Publication date: 2019-03-21
Also published as: CN111052825A; CN111052825B

Abstract

Provided is a channel demodulation method, comprising: a user equipment receiving configuration information sent by a first base station, the configuration information comprising at least one format of added downlink control information; receiving a format, sent by the base station, of the downlink control information; and acquiring a reference signal corresponding to the format of the downlink control information for channel estimation so as to demodulate a downlink physical shared channel. The resource overhead can be reduced, and the gain can be increased.

Description

Channel demodulation method and related equipment

Technical field

The present application relates to the field of wireless network technologies, and in particular, to a channel demodulation method and related devices.

Background technique

The LTE R10 protocol introduces Transmission Mode 9 (TM9), which is designed to support higher-order Multiple-Input Multiple-Output (MIMO), support up to 8 streams of downlink single-user MIMO, and enhance downlink multi-users. MIMO performance. R11 introduces TM10 for Downlink Coordinated Multipoint Transmission (DL CoMP) technology application and enhances it based on TM9. Both TM10 and TM9 use multiple reference signals: Common Reference Signal (CRS), Demodulation Reference Signal (DMRS), and Channel State Information-Reference Signal (CSI-RS). . The CRS is a cell-level reference signal; the DMRS is used for channel estimation of a Physical Downlink Share Channel (PDSCH), and the CSI-RS is used by a terminal to acquire channel state information (CSI). Compared with CRS, CSI-RS can greatly reduce the time/frequency density and can support up to 8 layers of spatial multiplexing.

To support DL CoMP, TM10 introduces multiple sets of measurement configurations (CSI Process), Quasi co-located (QCL), VCID, and corresponding CSI feedback changes. Multiple sets of CSI Process are used to enhance DL CoMP measurement, and coordinate through multiple transmission processing (TP) on the system side, such as Dynamic Point Selection (DPS), Joint Transmission (JT), Coordinated Scheduling/Coordinated Beamforming (CS/CB), etc., to improve the signal to interference plus noise ratio (SINR) or channel quality of the edge user equipment (User Equipment, UE) Channel Quanlity Indicator (CQI), thereby improving the throughput of the edge UE. Since CoMP can dynamically switch TP, using DMRS and CRS, the quasi-co-location relationship between CSI-RS can improve the equivalent channel estimation performance of the UE based on DMRS, thereby improving UE receiving performance. After the UE obtains the quasi-co-location information, the DMRS demodulation PDSCH can be compensated by the channel information obtained from the CRS and the CSI-RS.

However, TM2's 2T/4T JT solution only supports one set of CSI measurements. When the JT user equipment falls back to independent scheduling, there is no corresponding CSI measurement, channel mismatch, it is difficult to guarantee demodulation performance, and the DCI 2C format DMRS brings 8%-16% overhead. In the 2T/4T JT/DPS scheme of TM10, when the PDSCH is only transmitted in the serving cell, the DMRS in the DCI 2D format brings 8%-16% overhead, consuming the gain of JT/DPS.

Summary of the invention

The embodiment of the invention provides a channel demodulation method and related equipment, which can reduce resource overhead and improve the gain of JT/DPS.

In a first aspect, the embodiment of the present application provides a channel demodulation method, including: a user equipment first receiving configuration information sent by a first base station, where the configuration information includes at least one format of the added downlink control information; and then receiving the first base station. Format of the downlink control information to be sent; finally obtaining a reference signal corresponding to the format of the downlink control information for channel It is estimated to demodulate the downlink physical shared channel. By increasing the format of the downlink control information, when the PDSCH is only transmitted in the serving cell or independently scheduled, the DMRS overhead is eliminated, and the gain of the JT/DPS is increased.

In a possible design, the user equipment measures channel state information according to the pre-configured first common reference signal and the channel state information reference signal; and sends channel state information to the first base station, where the channel state information is used by the base station to determine downlink control information. format. By using two sets of CSI measurements, when the JT user equipment falls back to independent scheduling, there is a corresponding CSI measurement to ensure demodulation performance.

In another possible design, the user equipment first receives the physical downlink control channel sent by the first base station; then performs blind detection on the physical downlink control channel to determine the format of the downlink control information.

In another possible design, when the format of the downlink control information is the first format, the user equipment receives the second common reference signal sent by the first base station for channel estimation to demodulate the downlink physical shared channel; When the format of the information is the second format, the user equipment receives the demodulation reference signal sent by the first base station for channel estimation to demodulate the downlink physical shared channel.

In another possible design, when the format of the DCI is 2/2A/1A, the UE receives the CRS sent by the base station for channel estimation, and then demodulates the PDSCH. When the format of the DCI is 2C, the UE receives the DMRS transmitted by the base station for channel estimation, and further demodulates the PDSCH. Alternatively, when the format of the DCI is 2/2A/1A, the UE receives the CRS sent by the base station for channel estimation, and then demodulates the PDSCH. When the format of the DCI is 2D, the UE receives the DMRS sent by the base station for channel estimation, and then demodulates the PDSCH.

In another possible design, in the 2T/4T JT scheme of TM9, the periodic CSI can be measured based on the CRS, and the aperiodic CSI can be reported based on the CSI-RS measurement. In the 2T/4T DPS or JT scheme of TM10, one CSI process is measured based on CRS, and one CSI process is measured based on CSI-RS, and CSI reporting is performed respectively.

In a second aspect, the embodiment of the present application provides a channel demodulation method, including: the first base station sends configuration information to the user equipment, where the configuration information is used to indicate that the user equipment adds at least one format of the downlink control information; and sends the configuration information to the user equipment. The format of the downlink control information, the format of the downlink control information is used by the user equipment to obtain a corresponding reference signal for channel estimation to demodulate the downlink physical shared channel. By increasing the format of the downlink control information, when the PDSCH is only transmitted in the serving cell or independently scheduled, the DMRS overhead is eliminated, and the gain of the JT/DPS is increased.

In a possible design, the configuration information further includes a configuration of the channel state information reference signal, where the configuration information is further used to indicate that the user equipment measures the channel state information according to the pre-configured first common reference signal and the channel state information reference signal. The user equipment is notified to use two sets of CSI measurements. When the JT user equipment falls back to independent scheduling, there is a corresponding CSI measurement to ensure demodulation performance.

In another possible design, the first base station receives channel state information sent by the user equipment; and determines the format of the downlink control information according to the channel state information.

In another possible design, when the first base station or the second base station performs independent scheduling on the user equipment, the first base station determines, according to the channel state information measured by the first common reference signal, that the format of the downlink control information is the first format. When the first base station and the second base station perform joint scheduling on the user equipment, the first base station determines, according to the channel state information measured by the channel state information reference signal, that the format of the downlink control information is the second format.

In another possible design, when the user equipment is jointly scheduled by Cell0 and Cell1, the user equipment reports two sets of measurement results based on CRS and CSI-RS, and Cell0 adopts the DCI format according to the CSI result measured by CSI-RS. It is 2C/1A. When the user equipment is independently scheduled by Cell0, the user equipment reports CRS-based and CSI-RS. For the 2 sets of measurement results, Cell0 uses the DCI format of 2/2A/1A according to the CSI result measured by CRS.

In another possible design, when the user equipment is jointly scheduled by Cell0 and Cell1, the user equipment reports the CSI measurement result of the CSI-RS based on the two cells and the CSI measurement result based on the serving cell CRS, and the Cell0 is based on the CSI-RS. The measured CSI results are in DCI format using DCI 2D/1A. When the user equipment is independently scheduled by Cell0, the user equipment reports the CSI measurement result of the CSI-RS based on the two cells and the CSI measurement result based on the serving cell CRS, and the Cell0 uses the DCI format as 2/2A according to the CSI result of the CRS measurement. /1A.

In another possible design, the first base station determines a scheduling manner for the user equipment according to the channel state information measured by the first common reference signal and the channel state information reference signal, and the scheduling manner includes joint scheduling or independent scheduling.

In another possible design, when the cell that sends the downlink physical shared channel is the serving cell to which the first base station belongs, the first base station determines the format of the downlink control information according to the channel state information measured by the first common reference signal. In a format, when the cell that sends the downlink physical shared channel is the coordinated cell to which the second base station belongs, the first base station determines, according to the channel state information measured by the channel state information reference signal, that the format of the downlink control information is the second format.

In another possible design, when the PDSCH is transmitted in the coordinated cell, the user equipment reports two sets of measurement results, one based on the CSI result of the two-cell CSI-RS measurement, one based on the CSI result of the serving cell CRS measurement, and the Cell0 according to the CSI - The CSI result of the RS measurement is 2D/1A in the DCI format. When the PDSCH is transmitted in the serving cell, the user equipment reports two sets of measurement results, one based on the CSI result of the two-cell CSI-RS measurement, one based on the CSI result of the serving cell CRS measurement, and the Cell0 adopts the DCI format according to the CSI result measured by the CRS. It is 2/2A/1A.

In another possible design, the first base station determines, according to the channel state information measured by the first common reference signal and the channel state information reference signal, a cell that sends a downlink physical shared channel, where the cell includes a serving cell to which the first base station belongs or The coordinated cell to which the second base station belongs.

In a third aspect, the embodiment of the present application provides a user equipment, where the user equipment is configured to implement the method and function performed by the user equipment in the foregoing first aspect, implemented by hardware/software, and the hardware/software includes the foregoing functions. The corresponding unit.

In a fourth aspect, the embodiment of the present application provides a first base station, where the first base station is configured to implement the method and function performed by the first base station in the foregoing second aspect, implemented by hardware/software, and the hardware/software includes The unit corresponding to the above function.

In a fifth aspect, the present application provides another user equipment, including: a processor, a memory, and a communication bus, wherein the communication bus is used to implement connection communication between the processor and the memory, and the processor executes a program stored in the memory for The steps in a channel demodulation method provided by the above first aspect are implemented.

In one possible design, the user equipment provided by the present application may include a module for performing user equipment behavior in the above method design. Modules can be software and/or hardware.

In a sixth aspect, the present application provides another first base station, including: a processor, a memory, and a communication bus, wherein the communication bus is used to implement connection communication between the processor and the memory, and the processor executes the program stored in the memory. The steps in a channel demodulation method provided by the above second aspect are implemented.

In one possible design, the user equipment provided by the present application may include a module for performing the behavior of the first base station in the above method design. Modules can be software and/or hardware.

In a seventh aspect, the present application provides a computer readable storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform the methods of the above aspects.

In an eighth aspect, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods of the above aspects.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the drawings to be used in the embodiments of the present application or the background art will be described below.

1 is a schematic structural diagram of a channel demodulation system according to an embodiment of the present application;

2 is a schematic diagram of a JT provided by an embodiment of the present application;

3 is a schematic diagram of a DPS provided by an embodiment of the present application;

4 is a schematic diagram of a 2T/4T JT scheme of TM9 provided by an embodiment of the present application;

FIG. 5(A) is a schematic diagram of a 2T/4T JT scheme of the TM10 provided by the embodiment of the present application;

FIG. 5(B) is a schematic diagram of a 2T/4T DPS scheme of the TM10 provided by the embodiment of the present application;

6 is a schematic flowchart of a channel demodulation method according to an embodiment of the present application.

7 is a schematic diagram of another TMT 2T/4T JT scheme provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of another 2T/4T JT scheme of the TM10 provided by the embodiment of the present application; FIG.

FIG. 9 is a schematic diagram of another 2T/4T DPS scheme of the TM10 provided by the embodiment of the present application.

FIG. 10 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure;

11 is a schematic structural diagram of a first base station according to an embodiment of the present application;

12 is a schematic structural diagram of another user equipment proposed by the present application;

FIG. 13 is a schematic structural diagram of another first base station proposed by the present application.

Detailed ways

The embodiments of the present application are described below in conjunction with the accompanying drawings in the embodiments of the present application.

Referring to FIG. 1 , FIG. 1 is a schematic structural diagram of a channel demodulation system according to an embodiment of the present disclosure. The channel demodulation system includes a user equipment (User Equipment, UE), a first base station, and a second base station, and a user equipment. The handover may be performed between a serving cell to which the first base station belongs and a coordinated cell to which the second base station belongs. A user device may refer to a device that provides a voice and/or data connection to a user, or may be connected to a computing device such as a laptop or desktop computer, or it may be, for example, a Personal Digital Assistant (PDA). ) and other independent devices. User equipment may also be referred to as systems, subscriber units, subscriber stations, mobile stations, mobile stations, remote stations, access points, remote terminals, access terminals, user terminals, user agents, or user devices. The first base station and the second base station may be an access point, a Node B, an Evolution Bureau (eNB), or a 5G base station (gNB), which refers to one or more sectors on the air interface. A device in an access network that the wireless terminal communicates with. By converting the received air interface frame to an IP packet, the base station can act as a router between the wireless terminal and the rest of the access network, which can include an internet protocol network. The base station can also coordinate the management of the attributes of the air interface.

In the embodiment of the present application, the DL CoMP mainly includes two technologies of JT and DPS, and data of the UE is available on nodes of at least one CoMP collaboration set. As shown in FIG. 2, FIG. 2 is a schematic diagram of a JT provided by an embodiment of the present application. After the UE moves from Cell1 to the overlapping area of Cell1 and Cell2, Cell1 sends a PDCCH, Cell1 and the UE to the UE. Cell2 simultaneously transmits a PDSCH to the UE. In the JT scheme, multiple nodes (which may be part or all of a CoMP cooperating set) transmit data to one or more UEs on time-frequency resources, which can improve received signal quality and/or data throughput, and multiple nodes simultaneously perform The transmission method can be either coherent or non-coherent. As shown in FIG. 3, FIG. 3 is a schematic diagram of a DPS provided by an embodiment of the present application. After the UE moves from Cell1 to the overlapping area of Cell1 and Cell2, Cell1 transmits a PDCCH to the UE, and Cell2 transmits a PDSCH to the UE. In the DPS scheme, data is transmitted from time-frequency resources on one node (within the CoMP cooperating set), and the transmission/mute node can be changed between subframes or on RB pairs in one subframe. Changes (variable in time slots), data is available at multiple nodes simultaneously, including Dynamic Cell Selection (DCS) in the process. DPS and JT can be used in combination to select multiple nodes to transmit data on time-frequency resources.

Based on the architecture of the above-mentioned channel demodulation system, the embodiments of the present application provide the following channel demodulation methods, including:

4 is a schematic diagram of a 2T/4T JT scheme of TM9 provided by an embodiment of the present application. In this scheme, the UE only reports a set of CSI-RS-based CSI measurements; the PDCCH is transmitted in the serving cell, the UE is based on CRS demodulation, supports the PDSCH in the DCI 2C/1A format; in the serving cell (Cell0) and the coordinated cell (Cell1) In the case of the joint transmission, the UE demodulates the PDSCH of the DCI 2C based on the DMRS; the PDSCH is independently transmitted in the serving cell, for example, a Transmission Time Interval (TTI), and the RB resource is not obtained from the coordinated cell, and needs to be rolled back to the serving cell. The UE is independently scheduled. However, TM9 only supports one set of CSI measurements. When JT users fall back to independent scheduling, there is no corresponding CSI measurement, channel mismatch, and DCI 2C lacks Precoding Matrix Indicator (PMI)/Rank Indication (Rank Indication, RI), it is difficult to guarantee demodulation performance, and DMRS in DCI 2C format brings 8%-16% overhead.

FIG. 5(A) is a schematic diagram of a 2T/4T JT scheme of the TM10 provided by the embodiment of the present application. In this solution, the UE reports two sets of CSI-RS-based CSI measurements; the PDCCH is transmitted in the serving cell, the UE is based on CRS demodulation, and supports DCI 2D/1A; the PDSCH is jointly sent in the serving cell (Cell0) and the coordinated cell (Cell1). The UE demodulates the PDSCH in the DCI 2D format based on the DMRS; the PDSCH is independently transmitted in the serving cell, for example, a TTI, and the RB resource is not obtained from the coordinated cell, and needs to be rolled back to the serving cell to perform independent scheduling on the UE. FIG. 5(B) is a schematic diagram of a 2T/4T DPS scheme of the TM10 provided by the embodiment of the present application. In this solution, the UE reports two sets of CSI-RS-based CSI measurements; the PDCCH is transmitted in the serving cell, the UE is based on CRS demodulation, and supports DCI 2D/1A; the PDSCH is transmitted in the coordinated cell, and the UE demodulates the DCI 2D-based PDSCH based on the DMRS. The PDSCH is transmitted in the serving cell, for example, a TTI, and the RB resource is not obtained from the coordinated cell, and needs to be rolled back to the serving cell to perform independent scheduling on the UE. For the TMT 2T/4T JT scheme and the 2T/4T DPS scheme, when the PDSCH is transmitted only in the serving cell, the DMRS of the DCI 2D brings 8%-16% overhead, consuming the gain of JT/DPS. In order to solve the above problems, the following solutions are provided.

Referring to FIG. 6, FIG. 6 is a schematic flowchart of a channel demodulation method according to an embodiment of the present disclosure, where the method includes but is not limited to the following steps:

S601. The first base station sends configuration information to the user equipment, where the configuration information is used to indicate that the user equipment adds at least one format of downlink control information. The at least one format includes a first format, for example, a

DCI

2 or 2A format may be added. The configuration information further includes a configuration of a channel state information reference signal, where the configuration information is further used to indicate that the user equipment is configured according to the pre-configured first common reference signal and the channel state information reference signal. No. Measuring channel status information.

S602. The user equipment measures channel state information according to the pre-configured first common reference signal and the channel state information reference signal.

For example, the user equipment and the first base station may pre-arrange that, in the 2T/4T JT scheme of the TM9, the reporting period CSI may be measured based on the CRS, and the aperiodic CSI may be reported based on the CSI-RS measurement. In the 2T/4T DPS or JT scheme of TM10, one CSI process is measured based on CRS, and one CSI process is measured based on CSI-RS, and CSI reporting is performed respectively.

S603. The user equipment sends the channel state information to the first base station.

S604. The base station determines, according to the channel state information, a format of the downlink control information.

In a possible implementation manner, when the first base station or the second base station performs independent scheduling on the user equipment, the channel status information measured by the first base station according to the first common reference signal, Determining, in the first format, the format of the downlink control information; when the first base station and the second base station perform joint scheduling on the user equipment, the first base station according to the channel state information reference signal The channel state information is measured, and the format of the downlink control information is determined to be a second format.

For example, as shown in FIG. 7, FIG. 7 is a schematic diagram of a 2T/4T JT scheme of the TM9 provided by the embodiment of the present application. When the UE0 and the Cell1 perform joint scheduling on the user equipment, the user equipment reports the CRS and the CSI-RS. 2 sets of measurement results, Cell0 according to the CSI results measured by CSI-RS, using DCI format 2C/1A. When Cell0 performs independent scheduling on the user equipment, the user equipment reports two sets of measurement results based on CRS and CSI-RS. According to the CSI result measured by CRS, Cell0 adopts DCI format as 2/2A/1A. The 2T/4T DPS scheme of TM9 is also supported due to the CRS and CSI-RS based measurement.

As shown in FIG. 8, FIG. 8 is a schematic diagram of a 2T/4T JT scheme of the TM10 provided by the embodiment of the present application. When the user equipment is jointly scheduled by Cell0 and Cell1, the user equipment reports the CSI measurement result of the CSI-RS based on the two cells and the CSI measurement result based on the serving cell CRS, and the Cell0 adopts the DCI format according to the CSI result measured by the CSI-RS. For DCI 2D/1A. When the user equipment is independently scheduled by Cell0, the user equipment reports the CSI measurement result of the CSI-RS based on the two cells and the CSI measurement result based on the serving cell CRS, and the Cell0 uses the DCI format as 2/2A according to the CSI result of the CRS measurement. /1A.

In addition, the first base station may determine, according to the channel state information measured by the first common reference signal and the channel state information reference signal, a scheduling manner for the user equipment, where the scheduling manner includes the joint scheduling or The independent scheduling. For example, in a TTI, when the JT user equipment obtains a scheduling opportunity, the first base station selects joint scheduling or independent according to at least one of two sets of CSI measurement, modulation and coding scheme (MCS) and neighboring RB resources. Scheduling.

In another possible implementation, when the cell that sends the downlink physical shared channel is the serving cell to which the first base station belongs, the channel measured by the first base station according to the first common reference signal Determining, by the status information, that the format of the downlink control information is the first format; when the cell that sends the downlink physical shared channel is a coordinated cell to which the second base station belongs, the first base station according to the channel state And determining the format of the downlink control information into a second format by using the channel state information measured by the information reference signal.

For example, as shown in FIG. 9, FIG. 9 is a schematic diagram of a 2T/4T DPS scheme of the TM10 provided by the embodiment of the present application. When the PDSCH is transmitted in the coordinated cell, the user equipment reports two sets of measurement results, one based on the two-cell CSI-RS. The measured CSI result, a CSI result based on the serving cell CRS measurement, and the Cell0 uses the DCI format as 2D/1A according to the CSI result measured by the CSI-RS. When the PDSCH is transmitted in the serving cell, the user equipment reports two sets of measurement results, one based on the CSI result of the two-cell CSI-RS measurement, one based on the CSI result of the serving cell CRS measurement, and the Cell0 adopts the DCI format according to the CSI result measured by the CRS. It is 2/2A/1A.

In addition, the first base station determines, according to the channel state information measured by the first common reference signal and the channel state information reference signal, a cell that sends the downlink physical shared channel, where the cell includes the first The serving cell to which the base station belongs or the coordinated cell to which the second base station belongs. For example, in a TTI, when the JT user equipment obtains a scheduling opportunity, the first base station selects a cell to be transmitted by the PDSCH according to at least one of two sets of CSI measurement, MCS adjustment, and neighboring RB resources.

S605. The first base station sends the format of the downlink control information to the user equipment.

In a specific implementation, the first base station may send a physical downlink control channel to the user equipment, where the physical downlink control channel indicates the format of the downlink control information.

S606. The user equipment acquires a reference signal corresponding to a format of the downlink control information, performs channel estimation, and performs demodulation on a downlink physical shared channel.

In a specific implementation, the user equipment first receives a physical downlink control channel sent by the first base station; and then performs blind detection on the physical downlink control channel to determine a format of the downlink control information. When the format of the downlink control information is the first format, the user equipment receives a second common reference signal sent by the first base station to perform channel estimation to demodulate the downlink physical shared channel; When the format of the downlink control information is the second format, the user equipment receives the demodulation reference signal sent by the first base station to perform channel estimation to demodulate the downlink physical shared channel.

For example, after receiving the PDCCH sent by Cell0, the user equipment performs blind detection on the PDCCH to determine the format of the DCI. As shown in FIG. 7, when the format of the DCI is 2/2A/1A, the UE receives the CRS transmitted by the base station for channel estimation, and then demodulates the PDSCH. When the format of the DCI is 2C, the UE receives the DMRS transmitted by the base station for channel estimation, and further demodulates the PDSCH. As shown in FIG. 8, when the format of the DCI is 2/2A/1A, the UE receives the CRS transmitted by the base station for channel estimation, and then demodulates the PDSCH. When the format of the DCI is 2D, the UE receives the DMRS sent by the base station for channel estimation, and then demodulates the PDSCH. As shown in FIG. 9, when the format of the DCI is 2/2A/1A, the UE receives the CRS transmitted by the base station for channel estimation, and then demodulates the PDSCH. When the format of the DCI is 2D, the UE receives the DMRS sent by the base station for channel estimation, and then demodulates the PDSCH.

In the embodiment of the present invention, the first base station sends configuration information to the user equipment, where the configuration information includes at least one format of the added downlink control information; and then the format of the downlink control information that is sent by the first base station to the user equipment; A reference signal corresponding to a format of the downlink control information may be acquired for channel estimation to demodulate the downlink physical shared channel. By increasing the format of the downlink control information, when the PDSCH is only transmitted in the serving cell or independently scheduled, the DMRS overhead is eliminated, and the gain of the JT/DPS is increased.

The above describes the method of the embodiment of the present application in detail, and the apparatus of the embodiment of the present application is provided below.

As shown in FIG. 10, FIG. 10 is a schematic structural diagram of a user equipment according to an embodiment of the present application. The user equipment includes a receiving module 1001, a processing module 1002, and a sending module 1003, wherein a detailed description of each module is as follows.

The receiving module 1001 is configured to receive configuration information sent by the first base station, where the configuration information includes an increased downlink. Controlling at least one format of the information;

The receiving module 1001 is further configured to receive a format of the downlink control information sent by the first base station;

The processing module 1002 is configured to obtain a reference signal corresponding to a format of the downlink control information, perform channel estimation, and perform demodulation on the downlink physical shared channel.

Optionally, the configuration information further includes a configuration of a channel state information reference signal;

The processing module 1002 is further configured to: measure channel state information according to the pre-configured first common reference signal and the channel state information reference signal;

The sending module 1003 is configured to send the channel state information to the first base station, where the channel state information is used by the base station to determine a format of the downlink control information.

Optionally, the at least one format includes a first format, and the processing module 1002 is specifically configured to:

When the format of the downlink control information is the first format, receiving a second common reference signal sent by the first base station to perform channel estimation to demodulate the downlink physical shared channel;

When the format of the downlink control information is the second format, the demodulation reference signal sent by the first base station is received for channel estimation to demodulate the downlink physical shared channel.

Optionally, the receiving module 1001 is specifically configured to:

Receiving a physical downlink control channel sent by the first base station;

Performing a blind check on the physical downlink control channel to determine a format of the downlink control information.

It should be noted that the implementation of each module may also perform the method and function performed by the user equipment in the foregoing embodiment, corresponding to the corresponding description of the method embodiment shown in FIG. 6.

As shown in FIG. 11, FIG. 11 is a schematic structural diagram of a first base station according to an embodiment of the present application. The first base station includes a sending module 1101, a receiving module 1102, and a processing module 1103, wherein a detailed description of each module is as follows.

The sending module 1101 is configured to send configuration information to the user equipment, where the configuration information is used to indicate that the user equipment adds at least one format of downlink control information.

The sending module 1101 is further configured to send the format of the downlink control information to the user equipment, where the format of the downlink control information is used by the user equipment to obtain a corresponding reference signal for channel estimation to solve a downlink physical shared channel. Tune.

The configuration information further includes a configuration of a channel state information reference signal, where the configuration information is further used to instruct the user equipment to measure channel state information according to the pre-configured first common reference signal and the channel state information reference signal.

Optionally, the receiving module 1102 is configured to receive the channel state information sent by the user equipment.

The processing module 1103 is configured to determine a format of the downlink control information according to the channel state information.

Optionally, the at least one format includes a first format, and the processing module 1103 is specifically configured to:

Determining, according to the channel state information measured by the first common reference signal, that the format of the downlink control information is the first format, when the first base station or the second base station performs independent scheduling on the user equipment. ;

When the first base station and the second base station perform joint scheduling on the user equipment, determine, according to the channel state information measured by the channel state information reference signal, that the format of the downlink control information is a second format.

Optionally, the processing module 1103 is further configured to: according to the first common reference signal and the channel state information. Determining a scheduling manner of the user equipment by using the channel state information measured by the signal, where the scheduling manner includes the joint scheduling or the independent scheduling.

When the cell that sends the downlink physical shared channel is the serving cell to which the first base station belongs, the first base station determines the downlink control information according to the channel state information measured by the first common reference signal. The format is the first format;

When the cell that sends the downlink physical shared channel is the coordinated cell to which the second base station belongs, the first base station determines the downlink control information according to the channel state information measured by the channel state information reference signal. The format is the second format.

Optionally, the processing module 1103 is further configured to determine, according to the channel state information measured by the first common reference signal and the channel state information reference signal, a cell that sends the downlink physical shared channel, where the cell includes a serving cell to which the first base station belongs or a coordinated cell to which the second base station belongs.

It should be noted that the implementation of each module may also perform the method and function performed by the first base station in the foregoing embodiment, corresponding to the corresponding description of the method embodiment shown in FIG. 6.

Please refer to FIG. 12 again. FIG. 12 is a schematic structural diagram of another user equipment proposed by the present application. As shown, the user equipment can include at least one processor 1201, at least one communication interface 1202, at least one memory 1203, and at least one communication bus 1204.

The processor 1201 may be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, combinations of digital signal processors and microprocessors, and the like. The communication bus 1204 may be a peripheral component interconnect standard PCI bus or an extended industry standard architecture EISA bus or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 12, but it does not mean that there is only one bus or one type of bus. Communication bus 1204 is used to implement connection communication between these components. The communication interface 1202 of the device in the embodiment of the present application is used for signaling or data communication with other node devices. The memory 1203 may include volatile memory, such as non-volatile volatile random access memory (NVRAM), phase change random access memory (PRAM), and magnetoresistive random access memory (Magetoresistive). RAM, MRAM, etc., may also include non-volatile memory, such as at least one disk storage device, Electrically Erasable Programmable Read-Only Memory (EEPROM), flash memory device, such as reverse or flash memory (NOR flash memory) or NAND flash memory, semiconductor devices, such as Solid State Disk (SSD). The memory 1203 can also optionally be at least one storage device located remotely from the processor 1201. A set of program codes is stored in the memory 1203, and the processor 1201 executes the programs executed by the above-described user equipment in the memory 1203.

Receiving configuration information sent by the first base station, where the configuration information includes at least one format of the added downlink control information;

Receiving a format of the downlink control information sent by the first base station;

Obtaining a reference signal corresponding to the format of the downlink control information for channel estimation to demodulate the downlink physical shared channel.

Optionally, the processor 1201 is further configured to perform the following operations:

After the user equipment receives the configuration information sent by the first base station, the method further includes:

Measuring channel state information according to the pre-configured first common reference signal and the channel state information reference signal;

Transmitting the channel state information to the first base station, where the channel state information is used by the base station to determine a format of the downlink control information.

Receiving a physical downlink control channel sent by the first base station;

Further, the processor may also cooperate with the memory and the communication interface to perform the operations of the user equipment in the foregoing application embodiment.

Please refer to FIG. 13 again. FIG. 13 is a schematic structural diagram of another first base station proposed by the present application. As shown, the user equipment can include at least one processor 1301, at least one communication interface 1302, at least one memory 1303, and at least one communication bus 1304.

Among them, the processor 1301 may be various types of processors mentioned above. The communication bus 1304 may be a peripheral component interconnect standard PCI bus or an extended industry standard architecture EISA bus or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 13, but it does not mean that there is only one bus or one type of bus. Communication bus 1304 is used to implement connection communication between these components. The communication interface 1302 of the device in the embodiment of the present application is used for signaling or data communication with other node devices. The memory 1303 may be various types of memories mentioned above. The memory 1303 can also optionally be at least one storage device located remotely from the aforementioned processor 1301. A set of program codes is stored in the memory 1303, and the processor 1301 executes the programs executed by the above-described user equipment in the memory 1303.

Sending configuration information to the user equipment, where the configuration information is used to indicate that the user equipment adds at least one format of downlink control information;

The format of the downlink control information is sent to the user equipment, where the format of the downlink control information is used by the user equipment to obtain a corresponding reference signal for channel estimation to demodulate the downlink physical shared channel.

Optionally, the processor 1301 is further configured to perform the following operations:

Receiving the channel state information sent by the user equipment;

Determining a format of the downlink control information according to the channel state information.

When the first base station or the second base station performs independent scheduling on the user equipment, according to the first public parameter Determining the channel state information measured by the signal, determining that the format of the downlink control information is the first format;

Determining, according to the channel state information measured by the channel state information reference signal, that the format of the downlink control information is a second format, when the first base station and the second base station perform joint scheduling on the user equipment. .

And determining, according to the channel state information measured by the first common reference signal and the channel state information reference signal, a scheduling manner for the user equipment, where the scheduling manner includes the joint scheduling or the independent scheduling.

When the cell that sends the downlink physical shared channel is the serving cell to which the first base station belongs, determining, according to the channel state information measured by the first common reference signal, that the format of the downlink control information is the a format

When the cell that sends the downlink physical shared channel is the coordinated cell to which the second base station belongs, determining, according to the channel state information measured by the channel state information reference signal, that the format of the downlink control information is the second format. .

Determining, according to the channel state information measured by the first common reference signal and the channel state information reference signal, a cell that sends the downlink physical shared channel, where the cell includes a serving cell or a location to which the first base station belongs A coordinated cell to which the second base station belongs.

Further, the processor may also cooperate with the memory and the communication interface to perform the operations of the first base station in the foregoing application embodiment.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

The objects, technical solutions and beneficial effects of the present application are further described in detail in the specific embodiments described above. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application are intended to be included within the scope of the present application.

Claims

A channel demodulation method, characterized in that the method comprises:

Receiving, by the user equipment, configuration information sent by the first base station, where the configuration information includes at least one format of the added downlink control information;

Receiving, by the user equipment, a format of the downlink control information sent by the first base station;

The user equipment acquires a reference signal corresponding to a format of the downlink control information to perform channel estimation to demodulate a downlink physical shared channel.
The method of claim 1, wherein the configuration information further comprises a configuration of a channel state information reference signal;

After the user equipment receives the configuration information sent by the first base station, the method further includes:

The user equipment measures channel state information according to the pre-configured first common reference signal and the channel state information reference signal;

The user equipment sends the channel state information to the first base station, where the channel state information is used by the base station to determine a format of the downlink control information.
The method of claim 1 or 2, wherein the at least one format comprises a first format;

Obtaining, by the user equipment, a reference signal corresponding to a format of the downlink control information, performing channel estimation, and performing demodulation on the downlink physical shared channel includes:

When the format of the downlink control information is the first format, the user equipment receives a second common reference signal sent by the first base station to perform channel estimation to demodulate the downlink physical shared channel;

When the format of the downlink control information is the second format, the user equipment receives the demodulation reference signal sent by the first base station to perform channel estimation to demodulate the downlink physical shared channel.
The method according to claim 1, wherein the receiving, by the user equipment, the format of the downlink control information sent by the base station comprises:

Receiving, by the user equipment, a physical downlink control channel sent by the first base station;

The user equipment performs blind detection on the physical downlink control channel, and determines a format of the downlink control information.
A channel demodulation method, characterized in that the method comprises:

The first base station sends configuration information to the user equipment, where the configuration information is used to indicate that the user equipment adds at least one format of downlink control information;

The first base station sends the format of the downlink control information to the user equipment, where the format of the downlink control information is used by the user equipment to obtain a corresponding reference signal for channel estimation to demodulate a downlink physical shared channel.
The method of claim 5 wherein said configuration information further comprises channel state information reference The configuration of the signal is further used to instruct the user equipment to measure channel state information according to the pre-configured first common reference signal and the channel state information reference signal.
The method according to claim 6, wherein before the first base station sends the format of the downlink control information to the user equipment, the method further includes:

Receiving, by the first base station, the channel state information sent by the user equipment;

Determining, by the first base station, a format of the downlink control information according to the channel state information.
The method according to claim 7, wherein the at least one format comprises a first format, and the determining, by the first base station, the format of the downlink control information according to the channel state information comprises:

When the first base station or the second base station performs independent scheduling on the user equipment, the first base station determines, according to the channel state information measured by the first common reference signal, that the format of the downlink control information is The first format;

When the first base station and the second base station perform joint scheduling on the user equipment, the first base station determines the downlink control information according to the channel state information measured by the channel state information reference signal. The format is the second format.
The method of claim 7 or 8, wherein the method further comprises:

Determining, by the first base station, a scheduling manner for the user equipment according to the channel state information measured by the first common reference signal and the channel state information reference signal, where the scheduling manner includes the joint scheduling or Said independent scheduling.
The method according to claim 7, wherein the at least one format comprises a first format, and the determining, by the first base station, the format of the downlink control information according to the channel state information comprises:

When the cell that sends the downlink physical shared channel is the serving cell to which the first base station belongs, the first base station determines the downlink control information according to the channel state information measured by the first common reference signal. The format is the first format;

When the cell that sends the downlink physical shared channel is the coordinated cell to which the second base station belongs, the first base station determines the downlink control information according to the channel state information measured by the channel state information reference signal. The format is the second format.
The method of claim 7 or 10, wherein the method further comprises:

Determining, by the first base station, the cell that sends the downlink physical shared channel, where the cell includes the first base station, according to the channel state information measured by the first common reference signal and the channel state information reference signal The serving cell or the coordinated cell to which the second base station belongs.
A user equipment, where the user equipment includes:

a receiving module, configured to receive configuration information sent by the first base station, where the configuration information includes an added downlink control signal At least one format of interest;

The receiving module is further configured to receive a format of the downlink control information sent by the first base station;

And a processing module, configured to acquire a reference signal corresponding to a format of the downlink control information, perform channel estimation, and perform demodulation on the downlink physical shared channel.
The user equipment according to claim 12, wherein the configuration information further comprises a configuration of a channel state information reference signal;

The processing module is further configured to measure channel state information according to the pre-configured first common reference signal and the channel state information reference signal;

The user equipment further includes:

And a sending module, configured to send the channel state information to the first base station, where the channel state information is used by the base station to determine a format of the downlink control information.
The user equipment according to claim 12 or 13, wherein the at least one format comprises a first format;

The processing module is specifically configured to:

When the format of the downlink control information is the first format, receiving a second common reference signal sent by the first base station to perform channel estimation to demodulate the downlink physical shared channel;

When the format of the downlink control information is the second format, the demodulation reference signal sent by the first base station is received for channel estimation to demodulate the downlink physical shared channel.
The user equipment of claim 12, wherein the receiving module is specifically configured to:

Receiving a physical downlink control channel sent by the first base station;

Performing a blind check on the physical downlink control channel to determine a format of the downlink control information.
A first base station, wherein the first base station comprises:

a sending module, configured to send configuration information to the user equipment, where the configuration information is used to indicate that the user equipment adds at least one format of downlink control information;

The sending module is further configured to send the format of the downlink control information to the user equipment, where the format of the downlink control information is used by the user equipment to obtain a corresponding reference signal for channel estimation to perform downlink downlink shared channel. demodulation.
The first base station according to claim 16, wherein the configuration information further includes a configuration of a channel state information reference signal, where the configuration information is further used to indicate that the user equipment is configured according to a pre-configured first common reference signal. Channel state information is measured with the channel state information reference signal.
The first base station according to claim 17, wherein the first base station further comprises:

a receiving module, configured to receive the channel state information sent by the user equipment;

And a processing module, configured to determine a format of the downlink control information according to the channel state information.
The first base station according to claim 18, wherein the at least one format comprises a first format; the processing module is specifically configured to:

Determining, according to the channel state information measured by the first common reference signal, that the format of the downlink control information is the first format, when the first base station or the second base station performs independent scheduling on the user equipment. ;

When the first base station and the second base station perform joint scheduling on the user equipment, determine, according to the channel state information measured by the channel state information reference signal, that the format of the downlink control information is a second format.
The first base station according to claim 18 or 19, wherein the processing module is further configured to determine, according to the channel state information measured by the first common reference signal and the channel state information reference signal, For the scheduling mode of the user equipment, the scheduling manner includes the joint scheduling or the independent scheduling.
The first base station according to claim 18, wherein the at least one format comprises a first format; the processing module is specifically configured to:

When the cell that sends the downlink physical shared channel is the serving cell to which the first base station belongs, the first base station determines the downlink control information according to the channel state information measured by the first common reference signal. The format is the first format;

When the cell that sends the downlink physical shared channel is the coordinated cell to which the second base station belongs, the first base station determines the downlink control information according to the channel state information measured by the channel state information reference signal. The format is the second format.
The method according to claim 18 or 21, wherein the processing module is further configured to determine a transmission station according to the channel state information measured by the first common reference signal and the channel state information reference signal A cell that is a downlink physical shared channel, where the cell includes a serving cell to which the first base station belongs or a coordinated cell to which the second base station belongs.
A user equipment, comprising: a memory, a communication bus, and a processor, wherein the memory is configured to store program code, and the processor is configured to invoke the program code to perform the following operations:

Receiving configuration information sent by the first base station, where the configuration information includes at least one format of the added downlink control information;

Receiving a format of the downlink control information sent by the first base station;

Obtaining a reference signal corresponding to the format of the downlink control information for channel estimation to demodulate the downlink physical shared channel.
A base station, comprising: a memory, a communication bus, and a processor, wherein the memory is configured to store program code, and the processor is configured to invoke the program code to perform the following operations:

Sending configuration information to the user equipment, where the configuration information is used to indicate that the user equipment adds downlink control information. At least one format;

The format of the downlink control information is sent to the user equipment, where the format of the downlink control information is used by the user equipment to obtain a corresponding reference signal for channel estimation to demodulate the downlink physical shared channel.
A computer readable storage medium, wherein the computer readable storage medium stores instructions that, when run on a computer, cause the computer to perform the method of any of claims 1-11.
A computer program product comprising instructions, wherein when executed on a computer, causes the computer to perform the method of any of claims 1-11.